Tiêu chuẩn iso 20028 2 2017

© ISO 2017 Plastics — Thermoplastic polyester (TP) moulding and extrusion materials — Part 2 Preparation of test specimens and determination of properties Plastiques — Matériaux polyesters thermoplast[.]

Plastics — Thermoplastic pol yester

Part 2:

Plastiques — Matériau p lye ste s the mo lastique s (TP) p ur

mo la e et extrusion —

Partie 2: Pré aration de s é ro vet e s et déte mination de s pro riétés

Fir t edition

2 17-0

Refer ence n mb r

ISO 2 0 8-2:2 17(E)

COPYRIGHT PROTECTED DOCUMENT

© ISO 2017, P blshed in Sw itz rlan

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written permis ion Permis ion c n be req esed from either ISO at the ad r es below or ISO’s member bod y in the c u try of

F reword i v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms an definitions 2

4 Preparatio of test specimens 3

4.1 General 3

4.2 Tr eatment of the mate ial befor e moulding 3

4.3 Inje tion moulding 3

5 Co ditioning of test specimens 4

6 Deter minatio of pr operties 4

Biblog raphy 7

ISO (he Int ernational Org nization for Stan ardization) is a worldwidefede ation of national s an ards

b dies (ISO membe b dies) The work of pr p ring Int ernational Stan ards is normaly car ied out

through ISO t ech ical committ ees Each membe b dy int er st ed in a subje t for w hich a t ech ical

committ ee has be n es a lshed has the right t o be r pr sent ed on that committ ee Int ernational

org nizations, g ove nmental an non-g ove nmental, in laison with ISO, also take part in the work

ISO cola orat es closely with the Int ernational Ele trot ech ical C mmis ion (IEC) on al matt ers of

ele trot ech ical s an ardization

The proc d r s used t o develo this document an those int en ed for it furthe maint enanc ar

desc ibed in the ISO/IEC Dir ctives, Part 1 In p rticular the dife ent a pro al c it eria ne ded for the

dife ent ty es of ISO document should be not ed This document was draft ed in ac ordanc with the

edit orial rules of the ISO/IEC Dir ctives, Part 2 ( e www iso org dir ctives)

A tt ention is drawn t o the p s ibi ity that some of the element of this document ma be the subje t of

p t ent right ISO shal not be held r sponsible for identifying any or al such p t ent right Detais of

any p t ent right identified d ring the develo ment of the document wi be in the Introd ction an / r

on the ISO ls of p t ent de larations r c ived ( e www iso org p t ent )

Any trade name used in this document is information given for the convenienc of use s an does not

cons itut e an en orsement

For an ex lanation on the meaning of ISO spe ific terms an ex r s ions r lat ed to conformity as es ment,

as wel as information a out ISO’s adhe enc to the Wor ld Trade Org nization (WTO) principles in the

Te h ical Bar ie s to Trade (TBT) se the folowing URL: www iso org iso/ for word html

This document was pr p r d b Te hnical Committ ee ISO/TC 6 1, Plas tic s , Subcommitt ee SC 9,

The mo las tic mate ials

This firs edition of ISO 2 0 8- 2 canc ls an r plac s ISO 7 9 - 2:2 1 , w hich has be n t ech icaly

r vised

A l s of al p rt in theISO 2 0 8 se ies can be fou d on the ISO websit e

Plastics — Thermoplastic pol yester (TP) moulding and

Part 2:

This document spe ifies the methods of pr p ration of t es spe imens an the s an ard t es methods

t o be used in det ermining the pro e ties of the mo las ic p lyest er moulding an extrusion mat erials

R eq ir ment for han lng t es mat erial and for con itioning b th the t es mat erial befor moulding

an the spe imens befor t es ing ar given

Proc d r s an con itionsfor the pr p ration of t es spe imens in a spe if ied s at e an proc d r s for

measuring pro e ties of the mat erials from w hich these spe imens ar made ar given Pro e ties an

t es methods w hich ar suita le and ne es ary t o charact eriz the mo las ic p lyest er moulding an

extrusion mat erials ar l st ed

The pro e ties ha e be n sele t ed from the g ene al t es methods in ISO 1 3 0-1 Othe t es methods in

wide use for or of p rticular signif icanc t o these moulding an extrusion mat erials ar also inclu ed

in this document, as ar the designat ory pro e ties spe if ied in ISO 2 0 8-1 (viscosity n mbe an

t ensie mod lus of elas icity)

In orde t o o tain r prod cible an compara le t es r sult , it is ne es ary t o use the methods of

spe imen pr p ration an con itioning, the spe imen dimensions an the t es proc d r s spe ified

he ein Values det ermined wi l not ne es ariy be identical t o those o tained using spe imens of

dife ent dimensions or pr p r d using dife ent proc d r s

2 Normati ve r eferences

The folowing document ar r fe r d t o in the t ext in such a wa that some or al of their cont ent

cons itut es r q ir ment of this document F or dat ed r fe enc s, only the edition cit ed a ples F or

un at ed r fe enc s, the lat es edition of the r fe enc d document ( inclu ing any amen ment ) a ples

ISO 6 , Plas tic s — Dete min tio o wate a s orption

ISO 7 - 2, Plas tic s — Dete min tio  o tempe atur  o de lec tio  u de  lo d — Part 2 : Plas tic s a d eb nite

ISO 2 1, Plas tic s — Sta dard atmos phe es fr c onditio in a d tes tin

ISO 5 7- 2, Plas tic s — Dete min tio o tens ile pro erties — Part 2 : Tes t c onditio s fr mo ldin a d

ex trus io plas tic s

ISO 2 4-1, Plas tic s — Injec tio mo ldin o tes t s pec imens o the mo las tic mate ial s — Part 1: G ene al

princ iples , a d mo ldin o multip rp s e a d b r s pec imens

ISO 1 3 - 2, Plas tic s — Determin tio  o the melt mas s-flow rate (MF ) a d melt v lume -flow rate (MVR) 

o the mo las tic s — Part 2 : Meth d fr mate ial s s ens iti ve to time -tempe atur hi s tory a d or moi s tur

ISO 1 8 -1, Plas tic s — Meth ds fr dete minin the dens it y o n n-c elular plas tic s — Part 1: Imme s io

meth d, lq id p knomete meth d a d titratio meth d

ISO 1 8 - 2, Plas tic s — Meth ds fr dete minin the dens it y o n n-c elular plas tic s — Part 2 : Dens it y

gradient c olumn meth d

ISO 1 8 -3, Plas tic s — Meth ds fr dete minin the dens it y o n n-c elular plas tic s — Part 3 : G as

p knomete meth d

ISO 1 2 -5, Plas tic s — Dete min tio o the v i s c os it y o p ly me s in diute solutio us in c api ar y

vi sc omete s — Part 5: The mo las tic p lyes te (TP) h mo olyme s a d c op ly me s

ISO 345 - 2, Plas tic s — Determin tio o ash — Part 2 : Poly(alkylene te ep th late) mate ials

ISO 45 9- 2, Plas tic s — Dete min tio o b rnin beh v io r b o y en index — Part 2 :

Ambient-tempe atur tes t

ISO 1 3 0-1, Plas tic s — Ac qui s itio a d pr s entatio o c omp ra le s in le-p int data – Part 1: Mo ldin

Mate ial s

ISO 1 3 7- 2, Plas tic s — Dife ential s c an in c alorimetry (DSC) — Part 2 : Dete min tio o glas s tra s itio

tempe atur a d glas s tra s itio s tep heig t

ISO 1 3 7-3, Plas tic s — Dife ential sc an in c alorimetry (DSC) — Part 3 : Dete min tio o tempe atur

a d enth lp o meltin a d c rys tali zatio

ISO 1 3 9- 2, Plas tic s — Thermomecha ic al a alys i s (TMA ) — Part 2 : Dete min tio  o c oeffic ient o lnear 

the mal ex pa s io a d glas s tra s itio tempe atur

ISO 2 7 3, Plas tic s — Tes t s pec imens

IEC 6 09 , S ld elec tric al ins ulatin mate ials — Meth d o tes t fr v lume r s i s tiv it y a d s urf c e

r s i s ti vit y

IEC 6 1 2, Meth d fr the dete min tio o the pro fa d the c omp rati ve trackin indic es o s old

ins ulatin mate ial s

IEC 60 43-1, Elec tric al s tr n th o ins ulatin mate ial s — Tes t meth ds — Part 1: Tes ts at p we

fr q enc ies

IEC 6 2 0, R ec ommended  meth ds  fr  the  dete min tion  o  the  permit i vit y  a d  dielec tric   di s s ip tio  

f c tor o elec tric al ins ulatin materials at p we , a dio a d radio fr q enc ies includin metr wa elen ths

IEC 6 2 6, Fluids fr elec trotechnic al a plc atio s — Un sed mine al ins ulatin  oil s fr tra s forme s a d 

sw itchgear

IEC 6 69 -1 -1 , Fir  h zard testing  — Par t 1 -10: Tes  flames  — 50  W h ri zontal a d ver tic al flame 

tes meth d s

3 Terms and definitions

No t erms an definitions ar lst ed in this document

ISO an IEC maintain t erminolo ical data ases for use in s an ardization at the folowing ad r s es:

— IECEle tro edia: a aia le at ht p:/ www ele tro edia org

— ISO Onlnebrow sing plat orm:a ai a le at ht p:/ www iso org o p

4 Preparation oftest specimens

The t es spe imens shal be pr par d b inje tion moulding It is es ential that spe imens ar alwa s

pr par d b the same proc d r , using the same proc s ing con itions

The mat erial shal be kept in mois ur -pro f containe s unti it is r q ir d for use

Mois ur cont ent of filed or r infor ed mat erials shal be ex r s ed as a pe c ntag e of the t otal mas of

the comp un

NOTE A t the time of p blication of this document, the ISO 2 4 series is b ing revised, def ining only the

injection-moulding con itions an refer ing to ISO 2 75 for the dimensions of the specimens Other International

Stan ards that have hithert o used diferent designations for the same specimen ty e are also inten ed to b

revised to bring the designations int o line with those in ISO 2 75 Man test stan ards, specifying test specimen

or refer ing to other stan ards as ISO 3 6 an the ISO 2 4 series, wil b revised in d e time an also refer to

ISO 2 75

4.2 Treatment of the mater ial befor e moulding

Befor proc s ing, the mois ur cont ent of the mat erial sample shal not ex ce d 0,0 % (b mas ) In

the case of f iled mat erials, this lmit r fe s t o the t otal mas of the mo las ic an file

To ensur that the mois ur cont ent r mains low, it is r commen ed that the sample mat erial in the fe d

ho pe of the inje tion-moulding machine be blanket ed with any suita le g s (e.g dried air, nitrog en or

arg on) Bett er r sult ma be o tained using a deh midifie ho pe drye

4.3 Injection moulding

Inje tion-moulded spe imens shal be pr par d in ac ordanc with ISO 2 4-1, using the con itions

spe if ied in Ta le 1

Table 1 — C nditio s for injection mo lding of test specimens

tempe atur

Mould

t empe atur

Ave a e

inje tion

velocity

Hold

pr s ur

time

Total cycle

time

P T, u f iled, semic ystal ine,

im-pact-modif ied an / r flame-retarded

P T, f il ed, semic y stal ine,

im-pact-modif ied an / r flame-retarded

P T, filed, semic y staline, n cle t ed 2 5 1 0 2 0 ± 1 0 2 ±5 40 ± 5

P T, f iled, semi c ystal ine,

flame-retarded

Mat erial Melt

t empe atur

Mould

tempe atur

Averag e

inje tion

velocity

Hold

pr s ur

time

Total cycle

time

P T, f iled, semi c ystal ine,

flame-retarded, n cle ted

P N, u f il ed, amorp ous

P N, u f iled, semic ystal ine

P N, f il ed, semic ystaline

3 0

270

270

2

8

8

2 0 ± 1 0

2 0 ± 1 0

2 0 ± 1 0

2 ±5

2 ±5

2 ±5

40 ± 5

40 ± 5

40 ± 5

5 Conditioning of test specimens

Tes spe imens for the det ermination of me hanical pro e ties, ele trical pro e ties an density shal

be con itioned in ac ordanc with ISO 2 1 for at leas 1 h at 2 °C ± 2 °C an (5 ± 1 ) % r lative

h midity

6 Determination of properties

In the det ermination of pro e ties an the pr sentation of data, the s an ards, sup lementary

ins ructions an not es given in ISO 1 3 0-1 shal be a pled Al t es sshal be car ied out in the s an ard

atmosphe e of 2 °C ± 2 °C an (5 ± 1 ) % r lative h midity u les spe if icaly s at ed othe wise in

Ta les 2 an 3

Ta le 2 is compi ed from ISO 1 3 0-1, an the pro e ties l st ed ar those w hich ar a pro riat e t o

the mo las ic p lyest er moulding an extrusion mat erials These pro e ties ar those conside ed

useful for comp risonsof data g ene at ed for dife ent he mo las ics

Ta le 3 contains those pro e ties, t es con itions an / r t es spe imens, not foun spe ificaly

in Ta le 2, w hich ar in wide use or of p rticular significanc in the practical charact erization of

the mo las ic polyest er moulding an extrusion mat erials C mparisons of dife ent mat erials using

these pro e ties ma wel be r s rict ed t o thosethe mo las ics in the same g ene ic fami es

Table 1 (c ontin ed)

Table 2— Standard properties and test co ditio s ( ele t ed from ISO 1 3 0-1)

a

Spe imen ty e

a

dimensions

mm

Spe imen

pr p ration

b Tes con itions an

sup lementary

ins ructions

Me h nical pro e ties

ISO 5 7-2

ISO 2 75

T pe A1

M

Test spe d 1mm/min

c

Nominal strain at

bre k

%

d

C arp impact

strength

k J/m 2

impact

C arp notched

impact strength

k J/m 2

8 × 1 ×4,

V – not ch, r =0,2

Method 1 A, edg wise

impact

The mal pro e ties

Glas transition

tem-perature

°C ISO 1 3 7-2 Moulding

compou d

— He ting rate 1 °C/min

Temperature of

de-flection u der lo d

flatwise

d

-1 -1

1 5 ×1 × d M d = 1,5 mm Ad itionalspec

-imen of thick es 0,75 mm

an 3mm.R ecord one of the

clas if ications V-0, V-1, V-2,

HB 0 or HB 5

Othe pro e ties

compou d

— Only on f iled grades

compou d

— Use 50 /5 p enol/ 1,2-di

chloro enzene for P T an

m-c esol for P T

2 °C

S turation value at 2 ° C an

5 % R.H

3

ISO 1 8 -1,

ISO 1 8 -2or

ISO 1 8 -3

ISO 2 75

centre part of

T pe A1

M

a

For al tes methods in which is refer ed to the ISO 29 series an / r ISO 3 6 for the desig ation an dimensions of

tes spe imen, ISO 20 5 shal be used

b

M = inje tion mouldin

c

If ru ture o cur at >50% nominal s rain, re ord either the me sured nominal s rain at bre k or “ >50”

d

— If s rain at bre k >10% b t no yield point below 50% at 50 mm/min, re ord s res an s rain at bre k at 50 mm/min

— If ru ture o cur at >50% s rain at 50mm/min, re ord s res at 50 % s rain an the me sured s rain at bre k or “ >50”

— If ru ture o cur without yieldin an s rain at bre k ≤10% when tes ed at 50 mm/min, use a tes spe d of 5

mm/min an re ord the s res an s rain at bre k

Table 3 — Specialzed properties and test co ditio s

a

Spe imen ty e

a

dimensions

mm

Spe imen

pr p

ra-tion b

Tes con itions an

sup lementary

ins ructions

Pro e ties/con itions /spe imens ofspe ial uti ty t o TP moulding an extrusion mat erials

MFR/MVR

cm 3

/ 10 min

g/ 10 min

ISO 1 3 -2

Moulding

compou d

Drying c

P T (u )f iled

Moisture < ,0 %

Test temperature 270 °C

Lo d 1,2 2,16/ / 10 kg

MFR/MVR value prefera ly

b tween 1 an 40

Drying d

High vis osity P T

Moisture < ,0 %

Test temperature 2 0 °C

Lo d 1,2 2,16/ kg

MFR/MVR value prefera ly

b tween 1 an 40

Drying e

P T (u )f il ed

Moisture < ,0 %

Test temperature

2 5 °C/ 5 °C/ 65 °C

Lo d 1,2 2,16/ / 10 /2 ,6 kg

MFR/MVR value prefera ly

b tween 1 an 40

Melting temperature °C ISO 1 3 7-3 Moulding

compou d

— R ecord pe k melting

tem-perature using 1 °C/min or

2 °C/min for P T an P T

compou ds an blen s

ISO 45 9-2

8 ×1 ×4 M Proced re A — t op surface

ignition

Co ff icient of line r

thermal e pansion

°C

−1

ISO 1 3 9-2 ISO 2 75 ,

pre-pared from

T pe A1

M Transver e an longitu inal

Determine the secant value

ov er the temperature rang

2 °C to 5 °C

R elative permit ivity

Dis ipation fact or

—

—

IE 60 5 ≥60 × ≥60 × 1

≥60 × ≥60 × 2

M Freq ency 1 0 Hz an

1 MHz (compensat e for elec

-trode edg efect)

Volume resistivity

Surface resistivity

Ω·m

Ω

IE 60 9 ≥60 × ≥60 × 1

≥60 × ≥60 × 2

M Volta e 5 0 V

Electric strength kV/mm IE 60 43-1 ≥60 × ≥60 × 1

≥60 × ≥60 × 2

M

M

Use 2 mm/75 mm co xi

al-cy lin er electrode

configu-ration Immer e in IE 60 96

transformer oil Use short

time (rapid rise)t est

Comparative

track-ing

in e

a

For al tes methods in which is refer ed to the ISO 29 series an / r ISO 3 6 for the desig ation an dimensions of

tes spe imen, ISO 20 5 shal be used

b