ISO 4574-1978 塑料 通用聚氯乙烯(PVC)树脂 热增塑剂吸收率测定

标准号：ISO 4574-1978
中文标准名称：塑料 通用聚氯乙烯(PVC)树脂 热增塑剂吸收率测定
英文标准名称：Plastics; PVC resins for general use; Determination of hot plasticizer absorption
标准类型：G31
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.20
适用范围：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.