ISO 305:1990 塑料.聚氯乙烯和有关含聚合物和共聚物及其混合物的热稳定性的测定.色变法

标准编号：ISO 305:1990

中文名称：塑料.聚氯乙烯和有关含聚合物和共聚物及其混合物的热稳定性的测定.色变法

英文名称：Plastics — Determination of thermal stability of poly(vinyl chloride), related chlorine-containing homopolymers and copolymers and their compounds — Discoloration method

发布日期：1990-04

标准范围

对比方法规范，基于聚氯乙烯在受热时因分解反应而变色加剧。圆盘状试样放置在铝片之间，并加热至规定的试验温度。在规定时间后，每次取出一个试样，通过目视检查或光度计测量来评估变色程度。

Specification of a comparing method, based on the increasing discoloration of polyvinylchloride when exposed to heat, due to a decomposition reaction. Test pieces in diskform are placed between aluminium pieces and heated to the specified test temperature. After specified periods one test specimen at a time is taken out and the degree of discoloration assessed by visual examination or by measuring with a photometer.

标准预览图