真空浇注用二组分聚氨酯的研究

Two ingredients polyurethane for vacuum casting

讨论了真空浇注成型的特点和适用于这种成型方法的聚氨酯材料的合成方法 ;研究了浇注工艺对选择原材料的特定要求 ;分析了采用不同的预聚物和不同的交联剂对聚氨酯材料的硬度、强度和断裂伸长等力学性能的影响 ,以及材料性能对成型零件的力学性能的影响 .

This paper discusses the synthesis of polyurethane used as the material for vacuum casting manufacture, which must satisfy the special requirements for the material by the special casting technique. The influences of different prepolymers and different cross linking agents on the mechanical properties and the performance of the vacuum casting are studied.