BS EN ISO 308-1998 塑料.酚制模材料.丙酮可溶性物质测定(非制模状态下透明树脂含量)

标准号：BS EN ISO 308-1998
中文标准名称：塑料.酚制模材料.丙酮可溶性物质测定(非制模状态下透明树脂含量)
英文标准名称：Plastics - Phenolic moulding materials - Determination of acetone-soluble matter (apparent resin content of material in the unmoulded state)
标准类型：G31
发布日期：1998/1/15 12:00:00
实施日期：1998/1/15 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 sample of finely divided phenolic moulding material. The method applies only to moulding materials based upon novolak resins and not to those based upon resols, as the latter type of resin may not be completely soluble in acetone. In this International Standard, the amount of acetone-soluble matter is reported as the apparent resin con-tent because, although the extract consists mainly of phenolic resin and hexamine, other acetone-soluble components such as lubricants and colorants or na-tural resins from the filler are normally also present and will therefore be reported as resin.