GB/T 20673-2006
ActiveCellular plastics - Determination of the coefficient of linear thermal expansion of rigid materials at sub-ambient temperatures
硬质泡沫塑料 低于环境温度的线膨胀系数的测定
Application Summary AI generated
This standard specifies a test method for measuring the linear thermal expansion coefficient of rigid cellular plastics at temperatures below ambient conditions. It is applied in the quality control and material characterization of insulation products, such as those used in construction, refrigeration, and cryogenic equipment, where dimensional stability under cold temperatures is critical. The standard ensures consistent testing procedures for manufacturers and laboratories evaluating the performance of rigid foam materials in low-temperature environments.
Related Standards
GB/T 10655-2003
Polymeric materials，cellular flexible--Determination of air flow permeability
GB/T 18945-2003
Polymeric materials，cellular flexible--Method of assessment of air flow value at constant pressure-drop
GB/T 18942.2-2003
Flexible cellular polymeric materials--Determination of stress-strain characteristicsin compression--Part 2: High density maternals
GB/T 18942.1-2003
Polymeric material，cellular flexible--Determination of stress-strain characteristic in compression--Part 1: Low density materials
GB/T 18941-2003
Flexible cellular polymeric materials--Determination of fatigue by constant-load pounding
GB/T 14274-2003
Polymeric materials，cellular flexible--Accelerated ageing tests
GB/T 12825-2003
Polymeric materials，cellular flexible--Determination of hardness by indentation technique
GB/T 18944.1-2003
Flexible cellular polymeric materials--Sponge and expanded cellular rubber products--Part 1:Sheeting
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.