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Chemical And Physical Properties Of PBT
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Chemical and physical properties of PBT
PBT is one of the toughest engineering thermoplastic materials. It is a semi-crystalline material with very good chemical stability, mechanical strength, electrical insulation properties and thermal stability. These materials have good stability under a wide range of environmental conditions. The chemical and physical properties of PBT, the moisture absorption properties of PBT are very weak. The tensile strength of unreinforced PBT is 50MPa, and the tensile strength of glass additive PBT is 170MPa. Too much glass additives will cause the material to become brittle. The chemical and physical properties of PBT, PBT crystallizes very quickly, which will cause bending deformation due to uneven cooling. For materials with glass additives, the shrinkage in the process direction can be reduced, but the shrinkage in the direction perpendicular to the process is basically the same as that of ordinary materials. -The shrinkage rate of general materials is between 1.5% and 2.8%. The material with 30% glass additive shrinks between 0.3% and 1.6%. The melting point (225C) and high temperature deformation temperature are lower than PET materials. The Vicat softening temperature is about 170C. The glass transition temperature (glass trasitio temperature) is between 22C and 43C.
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Chemical And Physical Properties Of PBT
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