GB/T 24148.9-2014
ActivePlastics—Unsaturated polyester resins (UP-R)—Part 9: Determination of overall volume shrinkage
塑料 不饱和聚酯树脂(UP-R） 第9部分：总体积收缩率测定
Application Summary AI generated
This standard specifies a test method for measuring the overall volume shrinkage of unsaturated polyester resins (UP-R) as they cure from a liquid to a solid state. It is applied in the plastics and composites manufacturing industry, particularly for quality control and material selection in processes like casting, compression molding, and hand lay-up. The standard ensures that shrinkage values are accurately determined to predict dimensional stability and prevent defects in finished products such as automotive parts, marine components, and construction panels.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.