Technical Standards And Specifications Related To Polymer Materials

The testing of polymer materials strictly adheres to authoritative technical standards and specifications both domestically and internationally. International standards such as those developed by the International Organization for Standardization (ISO) and the American Society for Testing and Materials (ASTM) are widely used.

Domestic standards mainly include national standards (GB/T, GB), industry standards (such as HG for the chemical industry and JB for the machinery industry), and local or group standards. Common standards include: GB/T1040 "Determination of Tensile Properties of Plastics," ISO527 series; GB/T1843 "Determination of Izod Impact Strength of Plastics," ASTM D256; GB/T1634 "Determination of Deflection Temperature Under Load of Plastics," ISO75; GB/T2408 "Determination of Flammability of Plastics - Horizontal and Vertical Methods," UL94, etc.

These standards specify in detail the test methods, sample specifications, equipment requirements, and result presentation, providing a unified and comparable technical basis for testing. They are fundamental to ensuring the impartiality, scientific validity, and international recognition of test results.