GSO ISO 308:2015

Plastics -- Phenolic moulding materials -- Determination of acetone-soluble matter (apparent resin content of material in the unmoulded state)


 

 

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标准号
GSO ISO 308:2015
发布
2015年
发布单位
GSO
当前最新
GSO ISO 308:2015
 
 
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 content because, although the extract consists mainly of phenolic resin and hexamine, other acetone-soluble components such as lubricants and colorants or natural resins from the filler are normally also present and will therefore be reported as resin.

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