GB/T 39822-2021
ActivePlastics—Determination of yellowness index and change in yellowness index
塑料 黄色指数及其变化值的测定
Application Summary AI generated
This standard specifies the method for measuring the yellowness index and its change in plastics, providing a quantitative assessment of color degradation or thermal/light-induced yellowing. It is applied in quality control and material testing for plastic products, such as packaging, automotive components, and consumer goods, to evaluate stability under processing or environmental exposure. The standard is used by manufacturers and testing laboratories to ensure consistent color performance and predict long-term aging behavior.
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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.