the synthesis methods of polyurethane pouring sealant, and cast moulding process were introduced in this review paper. the development of polyurethane pouring sealant at broad were also described.
论述了聚氨酯灌封胶的合成方法和浇注制造工艺。并就聚氨酯灌封胶的国外发展进行了阐述。
polyurethane (pu) pouring sealant was synthesized with polymer h and modified isocyanate k as basic materials.
选用聚合物h和改性异氰酸酯k为主要原料合成聚氨酯灌封胶。
a kind of epoxy pouring sealant was prepared. its formulation was optimized. the electrical and mechanical properties were determined.
研制了低黏度环氧灌封胶,进行了配方优化,测试了其力学性能和电性能。
by adding a room-temperature curing agent with low viscosity and the nitrile rubber with good heat resistance the pouring sealant with low viscosity and improved heat resistance was prepared.
在配方中采用了低黏度的室温固化剂和耐热性能良好的丁腈橡胶,降低了体系的黏度,改善了环氧树脂灌封胶的耐热性能。