Tiêu Chuẩn Iso 00177-2016.Pdf

© ISO 2016 Plastics — Determination of migration of plasticizers Plastiques — Détermination de la migration des plastifiants INTERNATIONAL STANDARD ISO 177 Third edition 2016 12 15 Reference number IS[.]

Plastics — Deter mination ofmig ration

Plastiques — Déte mination de la migration de s plastif nt

T ir d edition

2 16-1 -1

Reference n mb r

ISO 17 :2 16(E)

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© ISO 2016, P blshed in Sw itz rlan

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Tel + 12 7 9 011

F reword i v

1 Sc ope 1

2 Nor mati ve r eferenc es 1

3 Terms an definitions 1

4 Principle 2

5 A pparatus 2

6 Test specimens 2

7 Co ditioning 3

8 Proc ed re .3

9 Ex pres io of r esults 4

10 Test rep r t 4

Biblog raphy 5

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 t erms an ex r s ions r lated 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

The committ ee r sp nsible for this document is ISO/TC6 1, Plas tic s , Subcommitt ee SC 6, Agein , chemic al

a d env iro mental r s i s ta c e

This third edition canc ls and r plac s the se on edition (ISO 1 7 :1 8 ), of w hich it cons itut es a

minor r vision with the folowing chang e:

— thenormative r fe enc s ha e be n updat ed

Plastics — Determination ofmig ration ofplasticizers

This document pe ifies a method for the det ermination of the t en ency of plas iciz rs t o migrat e from

plas ics in w hich they ar contained int o othe mat erials or othe plas ics w hen they ar brought int o

close contact

NOTE 1 T e surfaces into which the migration can proce d can also consist of org nic surface co tings, such

as lacq er

This t es is suita le

a) for ev luating the t en ency displa ed b plas ics, p rticularly in the form of films and she t , t o

lose c rtain of their lq id cons ituent w hen they ar brought int o contact with mat erials that

have an affinity for plas iciz rs, an

b) for s u ying the t en ency t o migrat e of plas iciz rs contained in a r sin or a se ies of r sins, in one

or mor conc ntrations

In case b), s andard comp u ds ar pr p r d on the basis of a wel-charact eriz d r sin with wel

-def ined ratios of plas iciz r t o r sin

NOTE 2 When the a sorb nt she ts themselves contain a substance capa le of migrating, simultane us

migrations can oc ur from the test specimens int o the a sorb nt she ts an vice ver a

The r sult ma also be afe t ed b the migration of othe cons ituent of the plas ic mat erial (for

ex mple, olg ome s) or b the los of any v latie cons ituent othe than plas iciz rs from the plas ic

mat erial or the a sorbent la e

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

ISO 2 3, Plas tic s — Compr s s io mo ldin o tes t s pec imens o the mo las tic mate ial 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 tes t s pec imens

ISO 2 4-3, Plas tic s — Injec tio mo ldin o tes t s pecime ns o the rmo las tic mate rials — Part 3 : Smal plates

3 Terms and definitions

F or the purposes of this document, the folowing t ermsand definitions a ply

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 Onlne brow sing plat orm:a ai a le at ht p:/ www.iso.org o p

migratio of plasticizer

los of mas of a she t of plas iciz d plas ic w hen plac d in close contact betwe n two a sorbent he t

of anothe mat erial, u de spe if ied con itions

A t es spe imen cut from a she t or plat e of the mat erial or from the f inished prod ct t o be t est ed is

plac d in close contact with two she t , ca a le of a sorbing plas iciz rs It is then subje t ed t o heating

un e defined con itions The los in mas of the t es spe imen, theor ticaly eq al t o the inc ease in

mas of the she t , is a measur of the migration of the plas iciz r

5.1 A nal ytical balanc e, ac urate to 0,0 1 g

5.2 Micrometer, ac urate to 0,0 mm

5.3 A ir circulating o en, ca a le of maintaining the temper atur e to within ± °C, in the range 50 °C

to 1 0°C

5.4 Glas plates, with plane surfac s, of suficient iz to co e the a sor bent b cking discs (5.6)

5.5 Weights, of 5 kg

5.6 A bsor bent backing dis s, with an afinity for plas iciz rs, 6 mm ± 1 mm in diamete an at leas

0,5 mm in thick es

The mat erials r commen ed for the t es ar :

— a s an ard rub e (ac ording t o ISO 4649), or

— polyethy lene without ad itive, or

— poly iny l ac tat e without plas iciz r

In the case of a p rticular a pl cation, an a sorbent b cking disc of the mat erial with w hich the plas ic

un e t es wi l be in contact w hen in se vic shal be used The surfac of the a sorbent b cking disc

shal be suff iciently smo th t o ensur contin ous contact with the t es spe imen

6.1 The tes spe imens shal be in the form of discs 5 mm ± 1 mm in diamete an at leas 0,5 mm

in thicknes , cut fr om a compr es ion-moulded (in ac ordanc with ISO 29 ) or inje tion-moulded (in

ac ordanc w ith ISO 2 4-1 an ISO 2 4-3) she t of suitable thick es

The surfac of the t es spe imens shal be suff iciently smo th t o ensur contin ous contact with the

a sorbent b cking discs (5.6)

6.2 In the case of fims, the tes spe imen of not les than 0,5 mm thick es shal be pr od c d b

pr es ing an adeq ate n mbe of fims at a suita le temper atur e for a out 1min

6.4 If the pr od ct to be tes ed consists of a supp rt (a ric, p pe or othe suita le mate ial), co ted

on one fac only b the spr eading or calende ing of a plas iciz d resin ( uch as fa rics co ted with vinyl

r esins or w ith simiar prod ct ), the tes spe imens shal consis of two discs cut fr om the mate ial it elf

and supe posed in such a wa y that the u co ted surfac s of the sup ort are touching an the plastic is

situated on the othe fac s of the san w ich so formed

6.5 Three tes spe imens shal be tes ed for each mate ial

Unles othe wise spe ified, the t es spe imens an a sorbent b cking discs (5.6) shal be con itioned

in one of the atmosphe es spe ified in ISO 2 1

8.1 A fte con itioning , weigh the tes spe imens ( e Clause 6) an the discs (5.6) to the neares

0,0 1 g an dete mine their mean thicknes to the near es 0,0 mm

8.2 Plac a tes spe imen of the mate ial u de tes betwe n two a sor bent b cking discs, in such

a wa y that their a es coincide an the as embly forms a san wich Plac the late betwe n two glas

plates(5.4)

8.3 If the tes is inten ed to dete mine the characte is ics of particular plasticiz rs, s andar d

comp u dsof a spe ified comp sition shal be used, as ag reed betwe n the inter es ed p rties

8.4 To eq alz the distribution of pr es ur e betwe n the a sor bent b cking disc an the tes spe imen,

a she t of rub e shal be inse ted betwe n the a sor bent b cking disc and the glas plate The a sor bent

b cking disc shal be sep rated fr om the she t of rub e b aluminium foi

8.5 Plac one of the 5 kg weights (5.5) on the as embly of discs an plates to be tes ed an plac the

as embly in the o en (5.3), maintained at a temper atur e of 7 °C ± 2 °C

It is pe mis ible t o supe imp se seve al as embles, but f ive at mos , sep rat ed b glas plat es, th s

forming a column lo ded with a single 5 kg weight In this event, the t empe atur shal be measur d

dir ctly at the int erior of the s ack, for ex mple, between an a sorbent b cking disc an the she t of

rub e inse t ed t o eq alz the pr s ur

When it is r q ir d t o take ac ou t of the se vic t empe atur of the mat erial, the t es should be

con uct ed at the t empe atur r commen ed in the spe if ication for the a plcation of the mat erial In

the a senc of any p rticular spe ification, if it is desir d t o pe form a t es at a t empe atur eithe

lowe or highe than 7 °C, 5 °C or 8 °C, r spe tively, should be used

8.6 Fresh a sor bent b cking discs shal be used for each test

8.7 A fte 24 h, r emo e the as embles from the o en S p rate the tes spe imens from the a sor bent

b cking discs an r econ ition al of them u de the same conditions as those a pled prior to the initial

weighing Reweigh the tes spe imens an the a sor bent b cking discs

8.8 In or de to dete mine the pr og r es of mig ration as a fu ction of time, it is sug g es ed that

measurement be efe ted afe tes pe iods of 1 d, 2 d, 5 d, 1 d, 1 d an 30 d In such cases, thr eetes

spe imens shal be used for each tes d ration

9 Ex pres ion of results

Calculat e the arithmetic means of the chang es in mas in grams:

a) of the thr e t es spe imens;

b) of the thr e set of two discs

If the ma imum spr ad of the r sult r lating t o a se ies of thr e t es spe imens or t o a se ies of thr e

p irs of discs dife s b ± 0 % r lative t o the v lue of the mean of the thr e r spe tive r sult , r peat

the t es on a new se ies of thr e t es spe imens

The migration of the plas iciz r in the prod ct u de t es is ex r s ed b the a o e two n mbe staken

in seq enc , for ex mple:

ISO 1 7 plas iciz r migration: mean for t es spe imens 0,45 g; mean for p irs of a sorbent discs

0,3 0g

The los in mas of the t es spe imen should be, theor ticaly, eq al t o the g in in mas of the two

a sorbent b cking discs This is, howeve , ve y rar ly the case; the o se ved dife enc is pro a ly d e

t o volatie los

10 Test repor t

The t es r p rt shal inclu e the fol owing information:

a) a r fe enc t o this document, i.e ISO 1 7 ;

b) a complet e identification of the sample an the method of pr p ring the t es spe imens;

c) thechemical comp sition an designation of the a sorbent b cking discs;

d) thecon itioning proc d r ;

e) the dimensions of the t es spe imens an of the a sorbent backing discs ( he thick es shal be

r port ed t o the near s 0,0 mm);

f) themas , in grams, of the t es spe imens an of the a sorbent b cking discs befor the t est ;

g) the los or g in of mas , in mi lgrams, of each t es spe imen an of the cor esp n ing p ir of

a sorbent b cking discs, an the t es d ration;

h) the arithmetic mean of the v lues o tained for thr e t es spe imens an for the cor esp n ing

thr e p irs of a sorbent backing discs;

i) o se v tions conc rning any chang es oc ur ing in the a pearanc of the t es spe imens

Bibl og raphy

[1] ISO 4649, Ru be , v ulc ani zed or the mo las tic — Dete min tio o a ras ion r s i s ta ce us in a

rotatin cylndric al drum dev ic e