Standard No.:	HG/T 4457-2012
English Name:	Plastics - Determination of Exudation of Plasticizers under Humid Condition
Chinese Name:	塑料 增塑剂在潮湿条件下渗出的测定
Chinese Classification:	G31    Basic standards and general methods for synthetic resin and plastic
Professional Classification:	HG    Professional Standard - Chemistry
ICS Classification:	83.080.01 83.080.01    Plastics in general 83.080.01
Issued by:	Ministry of Industry and Information Technology
Issued on:	2012-12-28
Implemented on:	2013-6-1
Status:	valid
Language:	English
File Format:	PDF
Word Count:	3000 words
Price(USD):	90.00
Delivery:	via email in 1~3 business day

本标准规定了增塑剂在潮湿条件下渗出测定的两种试验方法，这两种方法包括：
--方法A：试样悬挂在装有蒸馏水的密闭容器；
--方法B：试样直接悬挂在恒温恒湿试验箱。
本标准适用于测定增塑塑料在潮湿条件下增塑剂渗出趋势，并依据外观变化分级，以评定塑料增塑剂在潮湿环境时的相容性。也适用于定量测定潮湿条件下增塑剂渗出的渗出量。
本标准用于比较不用的增塑剂时，应采用性质清楚的树脂和已知比例的增塑剂制备标准配混料。