Nghiên cứu và thiết lập các tổ hợp vật liệu vinyleste biến tính trên cơ sở dầu đậu nành epoxy hoá làm lớp lót liên diện của vật liệu composite bọc trên nền bêtông và kim loại

DAI HQ C QUOC GIA THANH PH6 HO CHI MINH TRUING DAI HOC BACH KHOA TRUNG TAM NCVL POLYMER o0o BAO CAO NGHIEM THU DE TAI: NGHIEN CIJU VA THIET LAP CAC TO HO VAT LIEU VINYL BIEN TINH TRE

DAI HQ C QUOC GIA THANH PH6 HO CHI MINH

TRUING DAI HOC BACH KHOA TRUNG TAM NCVL POLYMER

o0o

BAO CAO NGHIEM THU

DE TAI:

NGHIEN CIJU VA THIET LAP CAC TO

HO VAT LIEU VINYL BIEN TINH

TREN Cd sO DAU DM' NANH EPDXY HOA DE LAM LOP LOT (LIEN DIEN)

CI JA VAT LIEU COMPOSITE 119C TREN

NEN BETONG VA KIM LOA'

Nhu'a vinyl ester bier' tinh tren cd so dau dau nanh epoxy hoa (ESO) vdi s' có mat cua cac day hydrocarbon có trong axit beo cua dau dau nanh cla nang cao tinh mem deo cling nhu' do linh clOng cua mach, do do (la cai thin cac tinh chdt cua nhu'a vinylester nhu' dO ben uOn va dO ben va dap va ttY do tim ra kha nang dung moi cua loai nhu'a bi6n tinh nay Cong nghe boc lot la mot dng dung kha quan trong cua vat lieu composite FRP, vi vay trong de tai nay.chting toi ti6n hanh nghien al' dung nhu'a Vinyl ester VESO trong cong nghe boc lot

Nghien cdu ch6 tao ldp vat lieu lien dien (primer) tren cd sa nhu'a vinyl este (VESO) tO' dau dau nanh epoxy hoa vdi axit metacrylic ngoai kha Wang barn dinh tot, do ben uOn va ben va clap cao, con có kha nang chiu cluOc cac moi tru'Ong an mon, Om do co nit nhu'ng khi hang chiu nhiet van tot khi gia cong boc vat lieu compozit tren nen kim lc* va be tong VOi sit co mat cua nanoclay da cai thin du'oc kha nang chiu s6c nhiet va khang moi truting cua loai nhiia VESO tudng clu'dng vdi cac nhu'a primer thu'Ong mai khac

Muc luc

8411)C ILIIIJC LdI MO DAU

MUC LIJC

DANH MUC BANG BIPU

1.1.3 Mat so chdt k6t not dung cho be tong hien có tren thi truOng 3

1.2.1 Thanh phAn cua vat lieu composite gia cut(ng sdi 3

1.2.3 Cac phu'dng phap gia cong vat lieu composite [3] 4

2.2.1 Muc Bich &la viec bi6n tinh nhu'a Vinyl ester 11

2.2.3 Bi6n tinh nhua vinyl ester bang au au nanh Epoxy hod (ESO) 12

Muc luc

3.4 CAC YEU TO ANH HIIONG DEN KHA NANG KET DINH 18

3.4.1 Kha nang thdm uOt b6 mat cua polymer va vat lieu ti6p xtic 18 3.4.2 Ban chdt ctia vat lieu nen va polymer lam keo dan 19

Muc luc

5.2.1 Khao sat qua trinh tong hop nhu'a VESO, danh gia cac thong s6h6a 19

5.2.2 Khao sat cac tinh chdt co 19 cua mang tiY cac loai nhila va kha nang barn

5.2.3 Anh hu'ong ctia nano clay d6n tinh chdt cua nhu'a trong cac mai tru'ong an

5.2.4 Khao sat kha nang barn dinh ctia ldp FRP len be mat kim loai 29 5.2.5 Khao sat kha nang barn dinh cua ldp FRP len be tong 29

5.3.4 Thi6t bi do cu 'Ong dO chiu keo ciia be tong 32

6.1.1 Cac y6u to anh hu'ang d6n qua trinh tong hop nhiia VESO 35

6.1.3 Khao sat cac tinh chdt cua hd dOng trung hop VESO - S 42

6.2.1 Khao sat tinh chdt mang phim theo cac to hop nhu'a 43 6.2.2 Khao sat kha nang barn dinh cua keo dan til cac loai nhu'a 44 6.2.3 Khao sat h6 nhu'a VESO vdi clay lam primer [9] 46

6.3 LONG NGHE BOC LOT CUA VAT LIEU FRP TREN NEN KIM LORI

6.3.2 Anh hu'Ong cua thdi diem gia cong lop FRP d6n dO bdn k6t dinh 57 6.3.3 Anh hu'ong cua moi tru'ong hoa chdt va s6c nhidt 58

6.4 LONG NGHE BOC LOT CUA VAT LIEU FRP TREN NEN BE TONG

61

Muc luc

6.4.4 Khdo sat anh hu'ong cua chgt khcii mao MEKP den khi nang barn dinh

66 6.4.5 Khao sat anti hu'6ng cua phu gia den Ichi nang barn dinh 66 6.4.6 Khao sat thdi diem gia cong composite FRP 69

Danh mnc bang bidu

IIDASIFI 4111)C 113,i1SC 1131

Bang 6.1 Anh huOng cua nh*da den tinh chdt co V cua VESO—S 36 Bang 6.2 Tinh chdt cd 1/ cua he VESO— S theo ham luong )(tic tac 37 Bang 6.3 Sit thay doi tinh chdt cO ly theo ti le cau tir 38 Bing 6.4 Anh hudng cua styren len do nhdt va kha nang tu'Ong hOp 42

Bang 6.6 Da b6n u6n, ben va clap va barn dinh cria cac to hOp mang nhiia 43 Bang 6.7 DO ben u6n, ben va clap va barn dinh cua cac to hOp mang nhiia 43

Bang 6.9 Do ben keo tru'ot cua keo di tit to hop SW901 + VESO 45 Bang 6.10 DO bdn keo trust cua keo di tit to hop SW907 + VESO 45 Bang 6.11 So sanh do nhdt cua nhiia theo ham luOng clay 51

Bing 6.13 Keft qua do ben keo trust cac rau theo chu kS, s6c nhiet 52

Bang 6.16 Da bdn keo trust vdi cac loci primer khac nhau tren kim loci vdi

Bang 6.17 Da ben keo trust vdi thdi gian gia cong FRP khac nhau 57

Danh rntic bang bidu

Bing 6.18 DO ben keit dinh ctia FRP sau khi ngam dung dich NaOH 10% 58 Bing 6.19 DO bdn ke't dinh ciia FRP sau khi ngam dung dich H2SO4 10% 58 Bing 6.20 DO bdn ke't dinh cria FRP sau khi ngam dung moi Toluen 59 Bing 6.21 DO bdn ke't dinh cria FRP len titer) sau s6c nhiet mot chu k5, 60 Bing 6.22 DO ben ke't dinh ctia FRP len the') sau s6c nhiet 3 chu 1(5, 60

Bing 6.26 Ke't qui this Wang dO barn dinh ctia cac loci primer 64 Bing 6.27 Ke't qui this dO barn dinh tren be tong có dO am khac nhau 65 Bing 6.28 Cu'dng dO barn dinh ciia primer VESO vdi cac ham lu'dng chat khdi

Bing 6.29 Anh hu'ang cria Silica Furmed den cac thong s6 cd bin ctia nhtra 67

Danh muc hinh ve

81111PC 11-11SII-1 VIE

Hinh 3.3 Bidu hien sit k6t dinh dudi tic Ong cua ltrc tudng tic Van der Waal 16 Hinh 3.4 Bidu hien su' barn dinh bang hic lien k6t tinh then 17 Hinh 3.5 Bidu hien sti barn dinh qua kha nang khuy6ch tan vao nhau 18

Hinh 6.1 Su' thay d6i cila HS theo thdi gian \fa nhiet do 35 Hinh 6.2 Anh hu'ong cila ham ludng xtic tic d6n hieu suit phan itng 36 Hinh 6.3 Su' bi6n d6i hien suit phin dng theo ti le du tit 37

Hinh 6.6 (a) Ph6 —NMR cUa ESO, (b) Ph6 —NMR ctia VESO 40

Hinh 6.9 So sanh kha nang barn dinh gifra hai ti le tudng hOp 40%, 50% 44 Hinh 6.10 DO' thi DMTA (a) - ti le 40% Styrene va (b) - ti le 50% Styrene 44

Hinh 6.13 Ph6 X-ray cUa mgu VESO 3 %clay a cac thdi gian phan tan khac

Danh muc hinh ye

So sanh dien tra thuAn trongmoi tru'Ong NaOH 30% 55

Be mat they) sau khi xt/ ly 24 giO qua kinh hidn vi quang hoc 55

Anh giot nhtla (a) SW984 va (b) SW901 tren bd mat the') xt7r ly cd

56 Hinh 6.30 (a)-DO bdn keo tru'Ot, (b)-DO bdn tdch boc ctia m'au trong cdc moi

Danh muc hinh ye

Hinh 6.40 Anh hu'ang cua thdi gian có thd gia ding composite FRP 69 Hinh 6.41 DO barn dinh cua FRP sau khi ngam trong dung dich HC1 10% 70 Hinh 6.42 DO bam dinh cua FRP sau khi ngam trong dung dich NaOH 10% 70

Chuang 1

CHUONG 1 PRIMER VA VAT LIEU COMPOSITE (FRP)

1.1 KHAI NleM Ve PRIMER[1]

Primer (14 k6t n6i hay ldp lot) &roc xem nha la mot lip trung gian nham tang tinh chdt vat ly ctia m6i dan ding nhd lam tang d6 ben cila lien k6t Primer la mot vat lieu tu'Ong tut nhtr chdt k6t dinh v6 thanh phan, nhung primer co d6 nhdt thdp hdn nen to co the phun hoac quet len nen tao mot ldp phu mOng Khong chi lam tang d6 barn dinh va bao ve vat lieu sdn phit, primer thu'aIng du'cic 1)6' sung them cac phu gia khac tang dO nhot de" han ch6 str chay, hay phu gia tang d6 deo dan h6i nhu cao su, chdt iYc ch6 an mon nhu kern va strontium chromate va mu6i chromate vo cd khac,

1.1.1 Vai tro ctia lap primer

- Bao ve be mat vat nen sau khi xi 15, (co th6 keo dai du'dc thoi gian gicra cong doan chua'n bi be mat vat nen khi gia cong)

- Dieu chinh nang luting be mat to do be i viec tao mot be mat d8 clang thdm not hdn, cldy manh phan drig haa hoc gicra chdt k6t dinh va be mat

- Ngoai ra, primer có th6 sit' dung d6 thdm vao to x6p hoac nhiing be mat g6

06 cid tao lien keI cd hoc va the

1.1.2 Phan' loai

a/ Lop kei noi cho kim loai

MO't s6 kim loaf yeu cau phai cd lisp k6t n6i (vi du nhu'nhom chua du'dc xtt 4/) dac biet la khi kim loai phai ti6p xtic voi moi tru'dng am N6u nuOc thdm qua va tie-p xtic vdi be mat kim loai, su' oxy hOa se bat dau (thep thu'dng se bi gi) Lop k6t n6i cho kim loai thu'dng cho them nhting vat lieu d6 ch6ng lai six an mon nhtr la kern

Dac biet cac lop sdn tren be mat kim loai hydroxit/oxit rat d8 bi bong thanh Bing mang nen can thi6t phai sir' dung lop k6t n6i M'Ot 47 do ntla dd sir dung lop k6t n6i tren be mat kim loai la khi dieu kien be mat có chdt ltrdng kern, vi du mot

Chuang 1

phgn kim loci da bi gi Tgt nhien phucing phap tot nhgt la ve sinh sach toan b6 be mat kim loci, nhung netu di'eu do khong the thqc hien du'Oc, mot loai lop k6t not dac biet co thE si dung de chuyEn gi thanh nhirrig muol kim loci ban

b/ Lop ker not cho nhtia

Si' dung Idp k6t not tren nhu'a thu'c sif can thi6t khi can thay doi ldn ve mau sac (vi du khi d6i to mau nau sam sang mau trgng), hoac khi mong mu6n lop son phi du'Oc sti' dung Mu dai VE co ban, ldp k6t nal se giam bdt s6 ldp son can thi6t

de thay doi mau sac cia sin phgm, va ldp k6t not se &lip tang d6 barn dinh cia ldp son MOt diEu quan trong khi chon lap keet not cho nhu'a IA dung moi trong lap k6t not khong pha hOng vat lieu ninfa &roc sdn

c/ Lop kei not cho be tong

Viec sit dung lop k6t not cho be tong la bgt bu6c vi nhang ly do sau day:

- Be mat b8 tong c6 tinh kim rat cao, pha Hy mat phan gidi cia nhfing vat lieu nhay cam MI vdi su' thiy phan

- Co nhiEu ch8 y6u, co mot ldp b6t tren be mat

- Co nhfing vet mit xugt hi8n tren bE mat be tong trong thdi gian bio du'dng

- Trong be tong thudng co d6 gm DO gm nay do nu& bi gift 14i trong be tong hoac do thgm vao tii ben ngoai

- Be mat be tong co thE thay d6i theo moi trudng ben ngoai ma no tietp xtic tUy thu6c vao nhiet d6 va c10 gm

Ngoai ra be tong IA mot vat lieu x6p va no se hilt gm hay chgt long ttY ldp son phi, lam lop son phi bi kha sdm Hgu h6t cac loai son se say ra phan ging hoa hoc trong thdi gian bao du'dng, no se phu thu6c vao lu'ong nu& hay dung moi bay hdi, khong bi hap thu Lop keI not se gitlp cho ldp son phu hoan thanh chu trinh bao du'drig N6i Chung, lop k6t not con co gia thanh re hdn tit 10% cl6n 75% so vdi vat lieu son phi nen vi8c sit dung lop k6t not trudc khi sdn phi se gitlp lam giam gia thanh cia he thOng sdn

Ching 1

1.1.3 MOt achgt ke't not dung cho be tong hiOn có tren thi trotting

Bang 1.1 Ctdc sit'n phim thttang mai act Swancor Ten thu'ang

DO nhat Ong hoc

a 25°C (cps)

T/gian song (Thang)

CP 97

Nhiia polyurethane dung cho

be tong có ham lu'Qng gm cao

CP 99

Nhu'a vinyl ester dung lam primer cho be tong, dO barn dinh t6t barn dinh t6t vdi nhu'a polyester \fa nhu'a vinyl ester

150 - 300 • 4

1.2 VAT LIEU COMPOSITE GIA CtidNG (FRP)[2]

Vat liOu composite gia cu'Ong sdi (FRP) (la du'dc sot dung dgu tien de gia cu'Ong cho k6t cgu be tong vao gicra nhfing nam 1950 Ngay nay vat liOu composite gia cdong sdi cang clu'dc sir dung r6ng rai trong cac cong trinh xay mdi nhu' lam bd chda hoa chgt, lam ldp phu bao ve cho cac nen nha xu'ang bang be tang o nhang khu vile thu'Ong xuyen ti6p xtic vdi hcia chgt, lam lop lot ben trong cua cac bd chda,

bd xit ly nu'oc thai du'dc lam bang be tong

1.2.1 Thanh phan ctia vat HO composite gia cutting sdi

Vat li6u composite gia cu'Ong sdi (FRP) Om co 2 thanh phgn chinh:

a/ coet

La pha khong lien tuc, (long vai tro tao nen dO ben cao, modun dan h6i cao cho composite FRP, do vgy c6t phai la loai co cac dgc tinh do, d6ng theii phai nhe

de tao nen dO be'n rieng cao Hinh dang, kich thudc, mat (10 va six phan b6 caa sdi

la nhang y6u to anh hu'ang manh d6n tinh chgt cd IS/ ciia composite Thong thu'Ong vat liOu de lam c6t n6i trong tat ca cac vat lieu FRP la cac sdi lien tuc (sdi thity tinh, sdi aramid (polyamide thdm).clu'dc tac dung voi nhu'a nen

ragteirdorament

• Consolidation Roller

Opp Gel east

Chu'ong 1

b/ Nen

Nen IA pha lien tuc, long vai tro lien ket toan b6 cac phan tit cot thanh mot khol composite th6ng nhdt Che phti, bio ve cot tranh cac but hOng do cac tac (16ng hoa hoc, co hoc cila moi tru'ong Yeu cau cua nen la phii nhe va c6 dO deo cao Nhu'a du'cic sit dung c6 the là nhu'a nhiet ran (polyester, vinyl ester ) hoac nhu'a nhiet deo nhu' (nylon, polyethylene terephthalate)

1.2.2 Nhffng u'u diem ctia vat lieu composite FRP

- Co the sir dung cho nfang khu vu'c lOn nhiing ket cau c6 the tich lOn do gia thanh re

- Cac ky tbot cii tien gimp cho vat lieu c6 cuting d6 cao va kh6i lu'ong nhe

- Ke't hOp tot be tong va soi thtiy tinh va chdt nhu'a nen polyme

- V4t lieu nhu' polyester, epoxy, vinyl ester laic dau o dang long sau khi d6 khuon va dinh hinh c6 sti lien ket phan tit Cs mtic cao va d8 tao hinh theo y muon

- Vat lieu thi cong d8 dang va khong yeu cAu cac thiet bi phdc tap

1.2.3 Cac phdcing phap gia cong vat lieu composite [3]

1.2.3.1 Gia cong tip slat that ing

a Phuvng phdp Ian tay

Phtking phap nay c6 u'u diem la thong dung, ph6 bien, d8 lam, dau tut it D8 dang thay ddi cas'u trtic sin phgrn, hay gia cong san phgm co hinh clang phtIc tap, goc canh c6 kich tint& lOn Tuy nhien nhuOc diem ctia phuOng phap nay IA nang sudt thdp, lao clOng nang, san pldm chi Lang dep c6 1 mat, chdt lu'ong san pham khong clO'ng deu, phu thu6c vao tay nghe ngu'di gia cong, phe lieu nhieu: bavia, mai, xit ly co hoc, b6t pile lieu kho

Chu'cing 1

b Phu'ong phcip phun

Scti clu'Oc cat nggn trong sting cam tay va gin binh phun chda nhu'a da c6 chit xtic tic sau do phun vao khuon, 'vat lieu se dong ran a nhiet d6 phong Phuong phap nay nang suit cao st3t dung thiet bi don gian gia thgp Tuy nhien san phgm giau nhu'a, chi c6 sqi nggn mdi c6 kha nang ket hOp ma no chi c6 kha nang lam tang cO tinh khong nhidu Nhua can c6 d6 nhdt MI) de c6 the phun, thdOng anh Wang den tinh chdt co nhiet cila composite Ham ltrOng styren ctia nhda dung trong phdong pita') phun cao lam hai den sUc khoe

c Phu'ong phap quan sm

Phu'Ong phap chti yeu lam cac san phgm r6ng hinh trent hoac oval nhu la 6ng thOng, Soi lien tuc 16i qua h6n hop nhda tru'dc khi qudn vao true theo nhidu hu'dng khac nhau duoc didu chinh bang mot ccf du an sOi Nhanh, nang suit cao, la mot phu'Ong phap co tinh kinh t6 dd gia ding vat lieu Luang nhu'a co the didu chinh dtrOc, san phgm c6 di) ben cao, chiu dig lu'c ion Chi co the lam du'oc cac sa phgm

co hinh dang 16i, Be mat ngoai khong co khuon do do khong dep

1.2.3.2 Phu'ang phap gia cong du'di tip suit:

a Mic ep nong

Khuon kin, dtic du'di ap lu'c san pi-dm clep chit lu'Ong Nhu'a va sOi du'Oc tam tru'ac vdi nhau tao thanh prepreg da co he xtic tic a nhiet d'6 thu'bng kitting 'Jong ran co the ltm t6i da sau thing PhdOng pita') nay c6 the didu chinh chinh xac ti

le nhu'a soi, tinh ye sinh va an toan lao Ong cao horn so vdi phu'ong phap lan tay nhua c6 the t6i vd co tinh va tinh chgt nhiet Nhdoc diem dm phu'Ong phap nay

la co the ton tai bot khi, de khgc phuc phai ep theo chu ky, gia cong theo ding giai doan, phai co giai loan ma khuon de thoat khi, tinh chdt san phgm phu thu6c vao tay nghd cua ngudi lam

b Due ep nguOi

Nhda nhiet deo hoac nhda nhiet ran ep dddi Ai) lu'c

1.2.4 Tinh chdt va iYng dung

vu'c bai cac tinh chat tru viet sau:

- Gia thanh hccp

Chuang 1

- Ty s6 tinh nang tren gid thanh va 6'7 s6 tinh nang cao hon sat thep

- Phu'dng phap gia ding the tao ddn gian

- De tao hinh, thay doi va sCia Chita

- it ton kern trong bao quan va ch6ng an mon

- Giarn du'oc nang luOng tieu thu do khol thdp

- Co the gia tang hoac giam bdt tinh dan nhiet va dan dien

Tuy nhien van có mot s6 nhdoc diem la gid thanh cua nguyen vat lieu khong

re, chdt lu'Ong sa.n pham kh6ng on dinh Mac du vay vat lieu composite dang ta'ng budc khung dinh vai trO cua minh trong cdc link vu'c khoa hoc va ddi song, dam dan thay the cac vat lieu khdc:

- Vat lieu gia dung: lavabor, b6n tam, ban ghe, tam trAn, tam cach am

- Vat lieu xay ddng: tap ldp, dam chiu lu'c

- Vat lieu dien: tam cach dien, vo bac, ye

- Vat lieu chiu hod chdt: sting dan, 6ng khoi, be Chita hoa chdt, be dien phan

- Giao thong van tai: vO xe hdi, va tau

- Hang khong, vu tru, quan su': canh, khung may bay, sling, do giap cho'ng dan

- Vat lieu y hoc: rang, xu'ong nhan tao

Chtrong 2

CHIANG 2 NHU'A VINYL ESTER

2.1 GIdI THIEU CHUNG VE NHVA VINYL ESTER[4]

Vinyl ester tinging du'cic tong hop tren cd so epoxy vOi cac axit don chtic

khong no dgu mach nhu' acrylic, metacrylic vinyl ester c6 cac tinh chdt cd ly cao,

tinh chiu nhiet tot va dac biet la kha nang chiu moi tru'ong an mon hoa chdt

2.1.1 Dac tinh ctia nhu'a vinyl ester

Vinyl ester la sit k6t hop giffa nhorn epoxy va nhom polyester, no dung thai

thd hien tinh chdt tieu bidu cria m6i nham:

CH // \ CH3 i CH-CH -CH —O <2 ' ' C

VOng thdm: mang tinh ben co hoc va chiu duoc nhiet cao 100 = 150°C

Nhom — OH: lam tang kha nang barn dinh ctia vinyl ester tren cac be mat

phan cu'c, ngoai ra c6 the Olin tang v6i cac chdt khdc nhu' anhydric, isocyanat

Lien Ick este: gitip ch6ng lai cac tdc nhan hoa hoc

NO1 doi: gill') vinyl ester c6 kha nang phin ting voi cac monomer kh6ng no

tao not ngang nhtr polyester khong no

Lien k6t ester chi nam a hai dgu mach nen vinyl ester it bi thily phan, n6u bi

thUy phan thi chi dirt a cu61 mach, khong anh huang d6n cac lien k6t con 14i VI

vay vinyl ester ben h6a hon polyster khong no vi polyester khong no chda nhieu

lien k6t ester, de' bi thily phan, bi dirt mach nhieu va tao thanh nhang vi tri de bi

cac tac nhan hoa hoc Caen cong

2.1.2 Nguyen lieu tang hdp nhda vinyl ester

a/ M/a epoxy

Nhu'a epoxy la loai nhu'a nhiet deo c6 chtta nh6m a — epoxy trong mach

nhu'a, co kha nang dung ran va tra thanh nhu'a nhiet ran Co nhieu loaf nhu'a epoxy

khac nhau nhu'ng ph6 bi6n nhdt la nhu'a epoxy tren cd sa epichlohidrin (ECH) va

bisphenol A co phan tang tang hop nhu'sau:

0—CH2CH—cH2

CH3

I

C CH3

Ching 2

HO

CH3 —OH+ H2C-CH-CHTC1 NaOH

b/ Axit co killing no mot not doi

Cac loai axit thuting dung ph6 bidn:

Axit acrylic:

1134 H2C '77CH C —OH T6n tai d trong thai long, c6 mUi dac tru'ng, khong mau, c6 tinh d6c hai rat cao Kha nang trUng hdp va ang trUng hdp rat cao

c/ Xtic kic cho phan ring tong hdp vinyl ester

XLic tac trong phan ling tao vinyl ester la cac loai amin bac 2 hoac bac 3 Trong cac loai amin thi pyridin 1a chdt xuc tac amin ph6 bidn nhdt cho tang hdp

VE, no clang vai trO la tac nhan tang cuOng ma Ong nh6m epoxy d nhi't c10 xac dinh cho phan irng giira nhom epoxy va axit tau cd clu'dc sir Ong trong phan dng tao nhu'a Phan lrng mo Ong epoxy bang axit c6 thd xay ra trong did'u kidn c6 xuc tac hoac khong co xuc tac nhu' sau:

Dudi xtic tac amin bac ba ce che- phan dng )(ay ra nhu'

anion nay se tan cong vao cac nhorn epoxy dAu mach

la hydroquinon vdi ham lu'ong <0.03%

R3N+ + CI-12 CH–

O

0 + R" C —OH

Ching 2

2.1.3 Qua trinh &mg ran nhtla VE

a/ Monomer tu'cing hdp

Monomer tuong hop voi nhu'a vu'a co tac dung la dung m6i, yin co tac dung

c16'ng trong hop voi cac not doi co trong nhua dd tao thanh mach khong gian

Monomer nay phii co nhiing yeu cgu nhtr: trOn hop aft voi nhu'a, khi nang ttt trong

hOp thdp va ang trong hop cao trong lieu kin thu'dng tao ra cac sin phdm dong

rgn ang nhdt va c6 tinh chit cd hoc cao, ph6 bi6n, it clOc hai, mui nhe va d6 bay

hdi thdp, khi nang bgt chay thdp, gia thanh phu hOp

Cac loci monomer ph6) bi6n: Styren (SM) , Metyl metacrylat (MMA)

HC CH2

.,Styren (SM)

Metyl Metacrylat (MMA)

b/ Cd the &mg ran

Cac g6c tit do can thi6t cho viec dong ran nhu'a vinyl ester thuting dttdc cung

cap bai chdt khdi mao la cac peoxide hitu cd, trong mot vai truting hop c6 thd dUng cac

tia x4 Cac peroxide hub cd bi phan huy thanh g6c tit do du'di tac dung dm nhidt

hogc chdt )(tic ti6n Voi chdt khOi mao la cac diacyl peroxide, chdt xuc tie'n thuting sit

dung la cac amin nhu': diethyl aniline, dimethyl aniline, dimethyl p-toluidene

HO dong rgn sit dung xlic lien la •cac amin co t6c dO d6ng rgn nhanh nhu'ng

sin phdm cuoi cung bi6n mau manh du'di tac dung clia lao Ma Do do, he dOng ran

voi chdt lchOi mao là ketone peroxide, xlic ti6n la cobalt duOc sit dung pho2 bi6n

Chuang 2

VOi cac chit IchOi mao IA cac ketone peroxide thi chit xdc tie-n thudng sii dung là octoate cobalt hoac naphthenate cobalt

2.1.4 Ling dung cua nhtia vinyl ester

- Dung lam vat lieu composite gia ding cac thiet bi ch(a khi SO2, SO3 a nhiet d6 cao (160 = 200°C)

- Cac thiet bi lam viec trong moi trudng axit, bazd, dung moi hdu cd, b6n chda xang dgu

- Lam 14 16t primer nhu son chiu moi trudng, barn kim loci tot, barn tren 138 mat be tong va barn vao lOp sdn ben ngoai

- De chiu nhiet dO cao, ben moi trilling axit, bazd, moi trudng oxy hoa to co the thay su'ain epoxy bisphenol A bang su'On epoxy novolac

- De tang tinh chiu nhiet va ch6ng chay dua brom vao (clan xuit halogen cua epoxy) Khi a nhiet d6 cao brom tach ra lam dap tat lita, b6n nhiet, ch6ng chay, d6 cdng cao hOn.Dd tang mach mem deo hdn thay sudn epoxy bisphenol A bang mach thong (aliphatic) hoac c6 the bang cac loci cao su epoxy hoa Mach mem deo ma d6 ben moi trudng cling rat cao

- De tang dO chiu nhiet, d6 mem deo dung hap chit silicon Dgu dau nanh epoxy hoa c6 thd tang d6 mem deo., lam son de dang hOn, tuy nhien chiu nhiet, chiu moi truing kern di

2.2 BIEN TINH NHVA VINYL ESTER

2.2.1 Muc dIch cua viec ble'n tinh nhua Vinyl ester

Tinh chg cua nhu'a vinyl ester la su' ke-t hap gi-tra d6 ben cd hoc, hoa hoc,

dung moi cua nhu'a epoxy va c6 Icha nang d6ng ran nhanh d nhiet d6 pheng cua polyester khong no Tuy nhien, no cling thda hu'ang mot tinh chit bit loi cua nhda epoxy: nhu'a sau clang ran hcci clOn, dO b8n u6n va c16 b8n va clap kern d6ng thdi lcha nang barn dinh tren cac vat lieu truyen th6ng nhu: kim loci, be tong, cao su hay go khong cao De khac phuc nhudc diem nay, nhieu de tai nghien cdu da clu'Oc dua ra bao g6m ca phu'dng phap bien tinh hoa hoc va hien tinh vat da pha'n nao cai thien cludc mot s6 yeu cau ye tinh chg

Chuang 2

2.2.2 Cac phdcing phap bie'n tinh[5]

2.2.2.1 Bien tinh hoa kw •

Thay (16i cdu Mix nguyen lieu tong hOp nhtra bang each thay the hoc bien tinh cac monomer co ban ban au:

- Khong sir dung cac axit don chdc khong no nhu not o tren ma dung cac axit beo khong no hay cac adduct cila maleic anhydric vdi dicyclopentadien [46], monoester cita cac diaxit [57], cac oligomer ciia butadien có nhOrn carboxyl cuol mach hay poly (butadien-co- acrylonitril) ce nhom carboxyl cuol mach [42] de tang

a ben u6n va sq mai men

- Chi thay the mot phdn cud axit khong no Wang cao su lOng hay copolymer cua butadien voi acrylonitril co'nhom axit cuol mach trong phin dng vdi nhtra epoxy [72] de tang cdelng (10 ben va ap

- Ph6i trOn VE-styren viii cac hop chat host tinh:cao su long poly (butadien —co- acrylonitril) có nhom vinyl cuol mach [49], [64] de tang dO ben u6n va va ddp Bang ke

2.2.2.2 Bien tinh vat IS,

Du'a vao polymer thanh phg'm mot so- loai polymer khac hoc mot s6 loai phu gia de lam thay doi trdt tu' sap x6p cila mach polymer, viec du'a vao nay có the chi

an dung cac phu'eng phap cd hoc (chudy, trOn, can ) va khong có cac phan ring

boa hoc xay ra Vi du: phol trOn DERAKAN 411-45 viii mot ham lu'Ong nhO cao su long poly (butadien-co-acrylonitril) nhom carboxyl cual mach, poly (butadien-co-acrylonitril) nhom hydroxyl cu6i mach dd tang dO ben va (1'4

2.2.3 Bien tinh nhila vinyl ester Wang clAu d4u nanh Epoxy hoa (ESO)

Nhu'a epoxy-vinyl ester (VE) da dude ring dung nhieu trong cac linh vdc khac nhau do có tinh chdt cd 15, cao, tinh chiu nhiet tot va ac biet la khd nal-1g chiu mai truting an mon hoa chdt Tuy nhien nhu'dc diem la rat den, (10 ben u6n va va ddp rat kern, kha nang barn dinh tren cac vat lieu: kim loai, be tong hay g8 deu thdp

De khdc phut dude nhting nhu'Oc diem nay cita epoxy-VE ta sit dung au au nanh epoxy hoa (ESO) vdi cau true mem deo la nhiing mach hydrocacbon dai tren khung glyxerit thay the cho nhu'a epoxy trong qua trinh tong hop va ta có du'oc mot loai vinylester ESO (VESO) Cong thirc cau tao ctia ESO ce thenhu' sau:

Chticin g 2

CH2-0C0—(CH2)7—CH—CH— CH2—CH—CH—(CH2)4—CH3

0 /

0 /

0 / CH-0C0—(CH2)4—CH—CH—CH2—CH— CH—CH2—CH—CH—(CH2)4—CH3

0 / \ CH—OCO—(CH2)7—CH—CH—(CH2)7—CH3

Do d'au ddu nanh epoxy h6acring c6 nhtTng nhOm epoxy trong mach phan nen bien phap su dung ESO de bie-n tinh vinyl ester cid dUQc khao sat VOi dac tinh mem d6o dia mach ESO se lam thay cloi cdu trdc nhu'a va tit do cac tinh chdt caa san pha'm se &roc thay c161 va cai thien

a Phtking trinh tang hdp nhda VESO tit ESO va axit metacrylic:

H3

Cong thdc cdu tao VESO:

CH3 0—C —C CH2 CH2—CH —CH (CH2)4

r3

1— —c=c Opp—(CH2,„

CH2-0C0- - (CH2)T—CH (C1-12)7 CH3

OH J)—C C CH2

b Tinh chk va iing dung caa VESO

Nhila VESO co d() ben va dap, uo-n cao nhu'ng do dO ding giam va mot s6 tinh chdt ltu viet cua yang thorn cung giam di clang ke nhdt la kha nang chiu moi tru'ong VESO du 'oc nghien cdu ling dung cho linh tao mang son hoac lam 14 primer ke-t dinh tren be mat nen cho mot s6 loai VE co tinh chdt barn dinh kern

Chtiong 3

CHLICING 3 LY THUYET VE KET DiNH [6]

3.1 KHAI NIEM VE KET DINH

3.1.1 Ket dinh ngoai

La loai ket dinh cita• 2 vat thd long, ran tinh the hay vo dinh hinh khac loai bat k5/ Ket dinh ngoai gay nen do cac lu'c lien ket cua cac phan tit, nguyen tii, ion, nhom hoot dOng hoa hoc khac nhau narn d be mat tiep )(tic cua cac vat thd nhir lu'c dinh hu'ong, lu'c Wen dang, lu'c phan tan vA lien ket hydro

3.1.2 Ket dinh

LA lien ket cua cac phan tit, nguyen tir ion trong ban than vat thd (nhu'a, cao

su, be tong ) Ket dinh nOi gay nen do cac lien ket hoa hoc, lu'c Van-dec-van va lien ket hydro

3.1.3 Ket dinh tut tao

LA ket dinh ctia cac vat the dOng loai Khac vOi ket dinh ngoai, a day ket dinh xay ra nhi cac lu'c lien ket gifra cac nguyen tii, phan tli ang loai tie') xdc vdi nhau

3.2 CO 93 LY THUYET PHAN T11

- Lift (khuye-ch tan) London: xudt hien khi mot polymer khong phan cu'c vi

du nhu' polyetylen tiep xitc vOi mot IA mat kim loai

o Luc (trong Mc) Debye: Xua't hien khi trong mach ctia polymer c6 nhirng

nguyen tii c6 do am dien ion

o Hieu ring Nang Khi polymer phan cu'c tiep xitc vOi mot be mat phan cu'c (nhu cellophan, thily tinh ) se xua't hien lu'c tu'dng tac luldng ctrc giira hai 138 mat tiep

o Lien ket hydro: LA mot tru'ang hdp (lac biet cila lien ket luring clic Nang

luting lien ket hydro lon nha't so vdi 3 loai tu'Ong tdc (tren 10 kcal/mol) DO am dien cang cao thi nang lu'cing lien ket ngay cang lOn

- Lien ket hem hoc

Lien ket h6a hoc b8n hdn lien ket vat lY nen nang ltrOng lien IA ldn hdn tOi ca ngan KJ/mol CO 3 loai lien ket chinh: lien ket hoa tri, lien ket ket ion, lien ket kim loai

Chu'cing 3

3.3 MOT SO THUYET HIEN DAI VE KET DiNH

3.3.1 Thuye't cci hoc

Theo thuy6t nay ski barn dinh polymer la do tach dOng cua co hoc, ski moc vao nhau giga hai be mat vat lieu, la ski xen vao nhau giffa b6 mat ti6p xtic ctia hai polymer va tao ra mang ludi co hoc an den cai thintinh barn dinh d lien dien

With 3.1 Bifu hiPt ket dinh duet tdc dOng co' hoc

Khi be mat vat lieu có cac 18 tong, khe mit, sa'n keo dan se tha'm vac) nhffng vi tri nay, moc vao be mat vat lieu nen do do dO barn dinh tang len De dat du'Oc lieu nay yeu cau polymer khong nhffng phai có d(1 nhOt thich hop ma phai có tinh chdt bi6n thich hop a có the chay vao cac 16 r8ng tren be mat vat nen trong mot khoang thoi gian thich hOp

3.3.2 Thuy0-t ket dinh lifia hoc

Thuy6t nay cho rang ski barn dinh la do su' arcing tac giiiia cac nhorn hoa hoc, ski phan cu'c du'oc mang tren hai be mat ti6p )(tic hay al hinh thanh cac lien dien hoa hoc giffa hai be mat

Hinh 3.2 Bifu hien ket dinh bang lien ket hoa hoc

Van der Waals Adhesive interactions polymer

Theo Mc-Laren, kdt dinh cua polymer c6 the phan thanh hai giai doan:

• Giai doan thti' nhdt: La qua trinh chuydn d6i cac dai phan tit dung dich hay

thd nOng chay cldn be mat vat lieu phai dan nhd chuydn d'Ong hZin dOn cua dai phan

• Giai doan that hai: La thie't lap can bang hdp phu 6 khoang cach nh6 hdn 5°A, gill'a cac phan tit cua vat lieu dan va phai dan bgt dau tac dung cac h6a tri this nha't hay lu'c Van-de-Wan

Hinh 3.3 Bleu hien sit kei dinh du'ai tac &Ong cua tu'o'ng tac Van der Waal

Theo Mac-Laren, yeu cau t6i can thidt d6i vOi cac vat heti dan (keo) là chung phai tha'm len vat lieu phai dan Ndu vat lieu dan co thd ke't tinh hay thay d6i thd tich cua minh thi kdt dinh ngoai giam di, polymer c1 trang thai vo dinh hinh c6 tinh

ket dinh ion hdn trang thai tinh

Theo 1j, thuye-t hdp phu, dO ben cua m6i n6i kdt dinh ngoai du'oc xac dinh bang TO ben cua nhiing lien kdt dOn vi va so lu'dng cua chung Nhiing tra ngai gay nen thuOc pham vi khoing cach giiia cac nguyen tti hay ion cf tren be mat va vat lieu phai dan cling nhu' thuOc pham vi hinh thai cau trtic va hinh thai sap xdp cua

Chtiong 3

cac dai phan tit vat lieu dan deu dan d6n ket qua la chi c6 mot phAn nho cac nhorn hoat dOng hay trung tam tham gia vao viec tao thanh cac lien ket k6t dinh ngoai

3.3.4 Thuye't ket dinh tinh dien

Theo thuy6t nay, sti barn dinh cua mot polymer len ten be mat dia vat lieu la

do sir tich dien trai ddu tren be mat polymer va vat lieu ti6p mic Theo V thuyet tinh dien, neu pha voi m0 van t0c cham, hai be mat ket dinh thick tach r6i tit tix, cac dien tich tut phan tan trong the tich hai vat lieu, ket qua la nang lu'ong can tach boc 16n, khong c6 sit phan tan, dien tich be mat hai vat lieu gilt nguyen, tru'brig hop nay hic tach boc lien dien se 16n

Hinh 3.4 Bie9u hien sti barn dinh bang 1(tc lien ket tinh dien

3.3.5 Thuye't khuyech tan

Ket dinh ngoai va ket dinh ttr tao hinh thanh deu xudt pink tu kha nang khuy6ch tan caa cac dai phan DI hay doan mach dia cluing lam lien MI ben yang gitra keo dan va vat nen Ket dinh ngoai va ket dinh tti tao khac nhau o ch8: trong tru'ong hop k6t dinh ngoai qua trinh khuyech tan xay ra do cac polymer khac nahu, con trong trutIng hOp ket dinh tti tao do ding loai polyme

14 thuyet khuyech tan xudt hien tir nhiing u'u diem v6 cdu truc clia polymer nhu' cdu tao mac xich, mach phan tit mem deo cho phep thay doi hinh thai sap x6p clia minh nho chuyen dOng nhi'et thuyet khuyech tan hoan toan phi 110p voi nhirng khai niem da biet: neu hai polymer cling c6 clic hay khong c6 ctic thi d0 IC& dinh cao va neu m0t polymer c6 clic va polymer kia khong c6 ctrc thi kho k6t dinh tot vcii nhau Theo V tuy6t khuyech tan, de tao thanh lien ket ben yang gifra hai polymer can c6 hai dieu kien:

Hinh 3.5 Bie9u hien sit Mtn dinh qua khii nang khuy(ch tan vita nhau

1)6 giii thich tai sao nhiing polymer trOn lan kern lai c6 thd k6t dinh tot vii nhau, mot s6 nguth nghien tutu da de ra gia thuy6t v6 khuy6chtan cuc 130 vao hi8n tudng khong citing the vi mo cua cac polymer c6 clic hay c6 cu'c y6u Van de nay, c6 thd neu len hi8n tu'dng: stitc cang be mat tren gidi han phan chia cac dung dich cna hai polymer khong trOn 174n gAn bang khong, c6 nghia la cac 'Joan mach dai phan tii cna hai polymer khong trOn Ian d6 tao thanh mot dung dich fan can bang gidi han phan chia hai polymer va thu'c chdt d6 la lop khuyeech tan

3.4 CAC YEU TO ANH RLONG DEN KHA NANG KET DiNH

3.4.1 Khi nang thfi'm deft be mat ctia polymer va vat lieu tie'p xtic

Dd thatm not be mat y8u cAu vat li6u polymer phai c6 sift cang be mat thdp hdn Ric cang be mat cua vat li6u barn dinh, muc dich nham tao nen g6c thdm tint bang kh6ng Thdrn but hoan toan khi lu'c but phan tit giira chdt long va phan tit cua chdt ran lin hdn lu'c htit giffa cac phan tit chdt long vii nhau

Kha nang thdrn u'at be mat con phu thuOc vao sitc cang b6 mat cila polymer

va chat nen, do nhot ciia keo va cdu trUc (hinh clang va kith thudc to ding) cila be mat qt n6n> Stic cang 136 mat cua vat lieu can barn dinh c6 thd thay ddi tuy theo cac phudng phap xii 1/ be mat, thu'Ong dung pilling phdp oxy hda be mat

Bad wetting

Chuzing 3

Hinh 3.6 Bieu hien kha rang therm u'ot be mat

Ap sudt khi dan c6 gid tri rat quan trong N6u dp sudt thda lam thanh m6i dan mong; dp sudt thi6u se lam cho lien k6t c6 16' r6ng kh6ng ban, chieu day lOn va khong deu, d6 ben c6 the giam di khd nhieu

3.4.2 Bin chdt caa vat lieu nen va polymer lam keo dan

Ban chdt cua vat lieu an va polymer lam keo cling la mot nhan t6 quan trong anh but d6n tinh chdt cua m6i dan

a/ Biin chit cua vat lieu nen

D6 barn dinh cua polymer tren mot be mat phu thu6c vao tinh chdt hoa hoc, hoa ly va vat U7 cua be mat ti6p )(tic Cd ban phu thu6c vao kha nang tudng hdp gida hai vat lieu, nang lu'ong be mat cua vat lieu ti6p xtic, ding nhu' cau trtic vat 157

be mat

b/ Ban chit cria polyme •

Cdu trtic cua polymer anh hu'ang 16n d6n lien k'e-t nOi Cdc nhan t6 anh huang chinh la kh6i luring phan td, d6 phan clic, s6 ltidng va kich thu'dc mach nhanh

- Kh6i lu'ong phan tii cua polyme: kh6i lu'Ong phan tut trung binh cua polymer lien quan d6n kha nang cai thien barn dinh cua lien dien Kh6i ltiOng phan tut thdp san phSm tao thanh co k6t dinh ngoai t6t nhu'ng k6t dinh n6i kern Nhffng polymer kh6i lacing phan tii lon kho Ma tan, k6t dinh n6i tot nhu'ng k6t dinh ngoai kern

- D6 phan cdc ciia mach polyme

Thy then cdu trtic phan tit phan clic nhieu hay it, polymer th6 hien kha nang barn dinh tren be mat ti6p xuc khdc nhau Anh tiding bai dO phan chic cua mach polymer phu thu6c vao gia tri cua moment luring clic cua cdc nhorn cht?c mang tren

Chu'ong 3

mach polyme Ngoai ra, hieu ring ciia de phan clic tren d6 barn dinh dia polymer con phu thuec vao cau triic mach ciia polymer (syndiotactic), can tra khong gian

3.4.3 Dieu kien gia cong

a/ Kj5 thuat xik ly khi din

Muc dich nham tang kha nang khuy6ch tan, do thdm trot be mat cda polyme

Do barn dinh clia polymer tren met be mat bdt ky phu thuec rat nhi8u vao ky thuat khi dan nhtf: chugn bi h8n hOp polyme, xir ly b8 mat ti6p xtic, ky thuat dan

b/ Dieu kien hinh thiinh mang keo dan

- Khi tao thanh lien k6t dan có th6 có nhUng qua trinh sau day:

- Thai dung mai tii dung dich polyme

- Nong chay polymer ran

- Tritng hop hay trung ngu'ng monome hoac oligome long clang

Tdt nhien con có nhiing tru'ong hop pink tap hdn, mdc de thai dung m6i khoi mang keo dan có anh hoeing quy6t dinh d6n pharn chdt dm lien k6t dan Dung moi con lai trong ldp keo dan se lam cho lop keo bi rang va do do giam de 138n clang nhtt d6 chiu nhiet

c/ Nhiet do va theii gian thing rein he keo

Nhiet do va thdi gian dong ran he keo co vai trO dac biet quan trong khi lien quan d6n nhang van de ltra chon nhii'ng di8u kien tai uu tao nen nhang lien k6t dan b8n yang Thy thuec vao ban chdt hoa hoc va thanh phan ctia cac chdt, có th6 dong ran h8n hop keo dan ci nhiet de thudng hay nhiet de cao

Nhiet do tang thi thdi gian hinh thanh lien k6t giam, de b8n va de chiu nhiet clia lien k6t dan tang 6 met nhiet do xac dinh, tang thdi gian long ran se lam tang

do bdn ciia cac lien k6t dan

d/ Chien day mang keo

De b8n ciia lien k6t dan tang len khi giam chiu day mang keo dan Chi8u day dia ldp keo dan phu thuec vao ban chdt hoa hoc, thanh phan, tinh chdt bi6n va lu'ong keo dem quet va cling phu thu6c vao dp sudt khi dan

Chuang 3

Dai lacing Co va dng suit not tai phu thuOc khong nhfing vao ban chdt hoa hoc

va tinh chat cua cac cdu tii hdp thanh keo din ma can phu thuOc vao dac tru'ng va dieu kien cua cdc qud trinh tao thanh lien ke-t dan

Mang polymer nhiet rdn a trang thdi dong rdn co cdu trdc khong gian chat the thi itng suit not tai cua chling Ion Nhiing loci keo di ttif polymer mem (elastomer) hay polymer nhiet rdn bie'n tinh bang polymer nhiet deo hay elastomer

se la nhfing he th6ng khong cd !Mg suit not tai ldn

Chuang 4

CHUCING 4 NGUYEN LIEU VA 1-115A CHAT Si' DUNG

4.1 SWANCOR 907 (SW 907)

La loai nhu'a vinyl ester tren Won novolac

SW 907 chiu du'oc mai tru'eing axit, kiem, oxi hoa va dung dich mu6i

Bring 4.1 Thong so'hoalSIctia SW 907

D6 nhdt Brookfield (60rpm/25°C) Cps 200 ± 100

(*) He xac Wen : MEKPO 55%: 1,2%; Cobalt 6%: 0,4%; DMA 100%: 0,05%

4.2 SWANCOR 901 (SW 901)

La loai nhu'a vinyl ester tren su'dn Bis-phenol A

SW 901 chiu dtkic rad truing axit, kiem, oxi hda va dung dich muol

Bring 4.2 Thong so /tort ly ctia SW 901

DO nhdt dOng hoc a 25°C Cps 450 ± 100

4.3 SWANCOR CP99

La nhu'a vinyl ester chil ye'u dung lam primer cho be tong, d6 barn dinh rat t6t, ch6ng hoa chdt rat tot va barn dinh ldp along vdi nhu'a polyester va nhu'a vinyl ester t6t Trang thai ton tai: mau h6 phach

Chu'c5ng 4

Bang 4.3 Tinh chat ctia nhu'a CP 99

Thai gian sit dung (dudi 25°C) 4 thing Luc ham dinh (tren kim loci) > 45 kg/cm2

4.4 SWANCOR 984 M

La nhkra vinylester tren co so cda cao su hien tinh vii epoxy duOc trO'n hap voi monomer styren do hang Showa cda Dai Loan sin xudt

Being 4.4 Tinh chat cfia nhtfaSW984M

DO nhat Brookfield (60rpm/25°C) Cps 400 ± 100

(*) He xac tie-n MEKPO 55%: 1,2%; Cobalt 6%: 0,4%; DMA 100%: 0,05%

cco (0-12)., -CH -CH (CH2V- CH3

DAu dAu nanh epoxy hoa B22D - DAi Loan c6 cac thong s6nhu'sau:

During luting epoxy: 262 (g/mol)

Kh6i luting phan td: 935 (g/mol)

Chi s6 xA phong hoa: 180

Chi s6 Iod:

4.8 STYRENE

Cong thtic cdu tao:

4.9 METHYL ETHYL KETON PEROXIT (MEKP)

Diroc sir dung lam chat )(tic tien cho cac phan ling (long ran

Du'Oc sti' dung d danh h6a tan trong diemethyl phtalate tao dung dich khong mau, 9% oxy host

Nhi'et d6 phan T°phanhOy = 68°C

Dang cyclic dimer:

C2H5

C2H5 00 CH3 Trong dung dich thing ton tai dang h6n hop ciia cac dang tren

4.10 Co2+

Sir dung lam chat xac tier' cho phan iYng dong fan VESO

Nhu'a VESO dung ham lacing 0,5%

4.11 SOLI THU' Y TINH

Sir dung soi thny tinh dang mat, s6 hieu 450, cila hang KCC Thai Lan voli b8 mat clu'oc sit 15, chdt lien then là silane

Khei luting rieng be mat: 450 g/m2

Chuang 4

4.12 XI MANG NGHI SON PCB 40

Loai : Xi mAng Po6c Lang 11.6n hOp, PCB 40

Trong luring : 50 kg/bao

Ngoai ra con sir dung cat, cid, nu'oc

4.13 SILICA FUMED

Ten finking mai: Aerosil R 972, cila cong ty Degusa, Dirc

Aerosil R 972 la Fumed Silica Ichong u'a nu'Oc citrOc sit ly vOi DDS (Dimethydichlorosilica) voi din tich bd mat rieng la 130m2/g, c6 tac dung tang tinh kdt dinh eng dung cho son va nhfing lop phil

Bring 4.5 NhtZng thong so'hoa ly clia Silica Fumed

DO gm (2 gib tai 150°C) % kh6i lu'Ong < 0,5

T6n thdt khi cl6t chay % kh6i lu'Ong < 2,0

AEROS1L R 972 ALROSIL R 974

011 3 Clia

Hinh 4.1 Cong thdc pha ft tet clia Silica fumed

qt lieu vo cd kim loai, chdt dOn) va vdi nhgng polymer hau cO (nhu'a nhiet ran va nhiet deo) Dynasylane Glymo lam tang kha nang barn dinh, tac nhan lien ket mang va cai thien be mat

Bang 4.6 Thong so-ky thu#t caa DG

Y: Nhom chtic hfiu cd

X: Nhom chirc Silic

Hinh 4.2 Cling thuc phan tip ca a Silan

Dac tinh va drig dung: Khi c6 nu'dc, nh6m methoxy ctia DYNASYLAN GLYMO thrly phan thanh nhang nh6m silanol hoat dong, nhang nhorn nay c6 the ket dinh yeti mot s6 be mat vo co Nhom glixin u'a chdt hgu cd cua DYNASYLAN GLYMO co the phan (mg vdi cac polymer phir hop

Chu'Ong 5

CHVONG 5 PHU/NG PHAP THUC NGHIEM

5.1 M1JC TIEU

Khao sat cac ye'u to inh Wong den khd nang Idt dinh cua lop vat lieu

compotite gia arcing soi (FRP) len tren be mat be tong th6ng qua lop ke't not

(primer) la nhu'a vinyl ester tif dau dau nanh epoxy boa (VESO)

5.2 NOI DUNG NGHIEN cflu

5.2.1 Khio sat qua trinh tang hip nhtia VESO, clanh gia cac thong so- 116a

IS va tinh chdt cd ly ctia nhtia

ESO

1

Khudy, gia nhiet

Khudy, gilt nhit

Dtic mAu betong this nghiem

Bao &Ong 7 ngay

Kim tra mAu be tong (cu'dng

dO nen, keo, do gm) Chugn

bi be mat m'au

Gia cong m'au tha' nghiem

Bao du'dng 7 ngay

Khao sat kha nang barn dinh

5.2.4 Maio sat kha Wang barn dinh ctia hip FRP len be mat kim loai

- Anh hating caa phu'ong phap xff 15, be mat kim loai

- Anh hutting ciia thdi diem gia cong lop FRP cl6n dO ben ket dinh

- Khao sat dO barn dinh cua lop FRP trong moi truing boa chgt va stic nhiet

5.2.5 Khao sat kha nang barn dinh ctia hip FRP len be tong