GB/T 4616-2008 Active
GB/T 4616-2008 Plastics—Phenolic moulding materials—Determination of acetone-soluble matter(apparent resin content of material in the unmoulded state)
Abstract
This standard specifies the method of determining the content of soluble substances extracted from phenolic molding powder by acetone at its boiling point using the gravimetric method. This standard is only applicable to molding powders based on linear phenolic resins, and is not applicable to molding powders based on methylated phenolic resins, as the latter type of resins cannot be completely dissolved in acetone. In this standard, the amount of acetone-soluble substances is the apparent resin content. Although the extract is mainly composed of phenolic resins and hexamethylenetetramine, there are usually other acetone-soluble components (such as lubricants, colorants, or natural resins from fillers), all of which are collectively referred to as resins.
General Product Information
| Document Type | National standards |
|---|---|
| Standard Status | Active |
| Standard Code | GB/T 4616-2008 |
| CCS | Basic standards and general methods for synthetic resins and plastics |
| ICS | Plastic Composite |
| Implement Date | 2009-04-01 |