ISO 4574:1978 塑料.一般用途的聚氯乙烯（PVC）树脂.热增塑剂吸收的测定

标准编号：ISO 4574:1978

中文名称：塑料.一般用途的聚氯乙烯（PVC）树脂.热增塑剂吸收的测定

英文名称：Plastics — PVC resins for general use — Determination of hot plasticizer absorption

发布日期：1978-09

标准范围

在75 C的温度下，在行星混合器的碗中调节200份增塑剂。添加100份待测树脂，并与增塑剂混合。在不同时间采集该混合物的样品，通过离心去除多余的增塑剂，并测定聚合物吸收的增塑剂量。绘制一张图表，从中可以确定受试聚合物:-增塑剂的平均吸收率（RPA）；-热增塑剂吸收（HPA）在75℃和30分钟。

Conditioning of 200 parts of plasticiser in the bowl of a planetary mixer at a temperature of 75 C. Addition of 100 parts of the resin to be tested and mixing with the plasticizer. Taking of samples of this mixture at various times, removal of excess of plasticizer by centrifuging and determining the quantity of plasticizer absorbed by the polymer. Plotting a graph, from which can be determined for the polymer under test: - the mean rate of plasticizer absorption (RPA);- the hot plasticizer absorption (HPA) at 75 C and 30 min.

标准预览图