GB/T 42918.3-2025
ActivePlastics—Thermoplastic polyurethanes for moulding and extrusion—Part 3：Test method for distinction between ether and ester polyurethanes
塑料 模塑和挤出用热塑性聚氨酯 第3部分：用于区分聚醚型聚氨酯和聚酯型聚氨酯的测定方法
Application Summary AI generated
This standard specifies a test method to distinguish between polyether-type and polyester-type thermoplastic polyurethanes (TPUs) used in molding and extrusion processes. It is applied in quality control and material identification within the plastics and rubber industries, particularly for manufacturers and users of TPU compounds who need to verify polymer type for processing or performance requirements. The method ensures correct material selection for applications such as automotive parts, footwear, or industrial components where the chemical structure of the TPU affects properties like hydrolysis resistance or flexibility.
Related Standards
GB/T 7141-2008
Plastics—Methods of heat aging
GB/T 9350-2003
Plastics--Homopolymer andcopolymer resins of vinyl chloride--Determination of pH of aqueous extract
GB/T 19276.2-2003
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium--Method by analysis of evolved carbon dioxide
GB/T 19275-2003
Evaluation of the potential biodegradability and disintegration of plastic materials by the action of the specific microorganisms
GB/T 19276.1-2003
Determination of the ultimate aerobic biodegradability of plastic materials in an aqueous medium--Method by measuring the oxygen demand in a closed respirometer
GB/T 12004.4-2003
Polyvinyl chloride paste--Determination of apparent viscosity by the Brookfield test method
GB/T 12000-2003
Determination of the effects of exposure to damp heat，water spray and salt mist for plastics
GB/T 17931-2003
Poly(ethylene terephthalate)(PET)resin for bottles
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.