This method 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 finely ground samples of mouldings prepared from a phenolic moulding material. 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.
BS 2782-4 Method 451B-1978由英国标准学会 GB-BSI 发布于 1978-05-31,并于 1978-05-31 实施。
BS 2782-4 Method 451B-1978 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: 83.080.10 热固性塑料。
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