ISO 12000:2000 pdf download – Plastics/rubber — Polymer dispersions andrubber latices (natural and synthetic)一Definitions and review of test methods.
ISO 12000 gives definitions relative to polymer dispersions and latices and identifies the test methods applicable for determining the properties of polymer dispersions. conipnsing products of synthetic or natural origin including synthetic and natural wbbe latices. Some of the test methods apply only to polymer dispersions or latices of specific chemical composition or to those to be used for specific applications.
NOTE Where they are not the suect of an e*istmg International Stancfard. the test mathods to be used for investigation of an individual polymer dispersion or taleir witl have to be the subect of agreement between the interested parties
2 Normative references
The folowing normative documents contn provisions which, through reference in this text, constitute provisions of this International Standard. For dated references. subsequent amendments to. or revisions of, tnese publications do not apply. However, parties to agreements based on this Inlernalionai Standard are encouraged to investigate the possibility of applying the most recent editions ci the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and lEG maintain registers of currently valid International Standards.
ISO 35:1995. Latex rubber, natural. concentrate — Deternirnation of mechanical stability.
ISO 123:_I), Rubber latex — Sampling.
ISO 124:1997. Latex, rubber — Determination of total solids content.
ISO 125:1990, Natural rubber latex concentrate — Determination of aitialkity.
ISO 126:1995, Latex, rubber, natural concentrate — Determination of dry rubber content.
ISO 127:1995. Rubber, natural latex concentrate — Determination of KOH number.
ISO 291:1997, Plastics — Standard atmospheres for conditioning and testing.
ISO 471:1995, Rubber — Temperatures, humidities and times for conditioning and testing.
ISO 472:1999. Plastics — Vocabulary.
ISO 506:1992, Rubber latex, natural, concentrate — Determination of volatile fatty acid number,
ISO 705:1994. Rubber latex — Determination of density between 5 V and 40 V.
ISO 706:1985. Rubber latex — Determination of coagulum content (sieve residue).
ISO 13741-2:1998. Plastics4u.bber — Potymer dispersions and rubber Iatices (natural and synthetic) — Determination of residual monomers and other organic components by cNaiy-cokimn gas chromatography — Part 2: Headspace method.
ISO 13773:1997, Rubber — Potychlor’oprene Latex — Determination of a?kalrntty.
NOTE Where individual standards overlap, it is intended thet they will be harmonized by the Technical Committees
responalble for them, ISO(FC 45 and ISGIC 61.
3 Terms and definitions
For the purposes of this International Standard, the following terms and definitions epply.
a heterogeneous system wi which a finely divided material is distributed in another material IISO 472:19991
polymer dispersIon (dispersion of natural or synthetic homopolymer and copolymer)
a liquid to semi.i.quid material, usually milky.wtiite, containing the polymeric material Wi a stable condition irneiy
dispersed in a continuous bquid phase, normally water
the traditional designation for a colloidal aqueous dispersion of nalural or synthetic rubber polymer
NOTE 1 Frequently, iatex is alao used as a syricnym br polymer aspersions r general
NOTE 2 Polymer dispersions and latices we often further explained by adding the designabon of the base polymer by name or by abbreviation. for instance polyacrylale dispersion, S8I latex.
4 Sampling
Sampling shall be carried out in accordance with ISO 123 (rubber latex).
Representative samples of polymer dispersions and of latices are a prerequisite for reliable and reproducible
results from the test methods. Therefore the material to be tested must be urxfomi.
5 CondItioning
The conditioning and testing atmosphere shall comply with the specified test method or referring standard, as applicable. If there are no such requirements, then samples shall be conditioned and tests carried out in one of the standard atmospheres specified in either ISO 291 for polymer dispersions or ISO 471 for latices. as appropriate.