GB/T 21332-2025
UpcomingRigid cellular plastics—Determination of water vapour transmission properties
硬质泡沫塑料 水蒸气透过性能的测定
Application Summary AI generated
This standard specifies test methods for measuring the water vapour transmission rate through rigid cellular plastics under controlled temperature and humidity conditions. It is applied in the construction and insulation industries to evaluate the moisture resistance of materials like polyurethane and polystyrene foam boards used in building envelopes, cold storage, and pipe insulation. The standard ensures consistent performance data for quality control and product certification.
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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.