BS 2782-4 Method 451A-1978 塑料试验方法.第4部分:化学性能.酚醛模制件的丙酮可溶物的测定

标准号：BS 2782-4 Method 451A-1978
中文标准名称：塑料试验方法.第4部分:化学性能.酚醛模制件的丙酮可溶物的测定
英文标准名称：Methods of testing plastics - Chemical properties - Determination of acetone-soluble matter in phenolic mouldings
标准类型：G31
发布日期：1978/5/31 12:00:00
实施日期：1978/5/31 12:00:00
中国标准分类号：G31
国际标准分类号：83.080.10
适用范围：This International Standard specifies a gravimetric method for the determination of the amount of matter that can be extracted by acetone, at a temperature near its boiling point, from a finely ground sample of a phenolic moulding. The test for acetone-soluble matter is one means for determining the relative degree of cure of phenolic mouldings made from a given material. The process of extraction is carried out under specified conditions for a specified time. Although a high proportion of soluble matter is determined, extraction is not necessarily complete. The results are only comparative, because the extracted material normally contains substances other than any undercured resin that may be present, for example lubricants, colouring matter and plasticizers.