This International Standard specifies a method for determining the mass fraction of a polypropylene homopolymer or copolymer which is soluble in xylene at 25 ℃.A weighed amount of dried sample is dissolved in xylene under reflux conditions, then cooled under controlled conditions and maintained at 25 ℃ to ensure controlled crystallization of the insoluble fraction.The xylene-soluble fraction is then recovered by evaporation of the xylene and determined by weighing the residue.Other materials with solubilities similar to that of the xylene-soluble fraction, such as additives, may interfere with the determination.
BS ISO 16152-2005由英国标准学会 GB-BSI 发布于 2005-10-03,并于 2005-10-03 实施。
BS ISO 16152-2005 在中国标准分类中归属于: G31 合成树脂、塑料基础标准与通用方法,在国际标准分类中归属于: 83.080.01 塑料综合。
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