GB/T 3517-2022
ActiveRubber, raw natural—Determination of plasticity retention index（PRI）
天然生胶 塑性保持率（PRI）的测定
Application Summary AI generated
This standard specifies the method for determining the Plasticity Retention Index (PRI) of raw natural rubber, which measures the rubber's resistance to oxidative aging by comparing its plasticity before and after accelerated heat aging. It is primarily applied in the rubber industry for quality control and grading of natural rubber, particularly in tire manufacturing and technical rubber goods where thermal stability is critical. The test is used by producers, laboratories, and procurement teams to evaluate raw material consistency and predict processing performance.
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Method for outdoor exposure testing of photodegradable plastics
GB/T 2918-1998
Plastics--Standard atmospheres for conditioning and testing
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.