聚氨酯弹性体胶浆的制备及性能研究

Research on Preparation and Property of Polyurethane Elastomer Rubbercement

以聚醚、甲苯二异氰酸酯(TDI)、蓖麻油为主原料配以其它助剂合成了聚氨酯弹性体胶浆,选择液态硫化剂3,5-二甲硫基甲苯二胺(DMTDA)与固体硫化剂3,3’-二氯-4,4’-二苯基甲烷二胺(MOCA)分别与胶浆反应制成了胶片,并对其进行了性能测试。结果表明,胶浆的最佳配方是胶浆的NCO质量分数为5.0%～6.0%,蓖麻油质量分数为10%左右。胶浆与DMTDA的质量配比在8～10∶1时,可常温固化、手工操作和达到进行大面积刮涂的目的,并应用于防腐工程。

Polyurethane elastomer rubbercement was synthesized by main materials of polyether polyols （JH- 210, JH-220）, toluene diisocyanate （TDI）, costor oil and other additive. Liquid sulfuration agent DMTDA and solid sulfuration agent MOCA were reacted with Rubbercement and got rubbersheets, the propertoes were measured. The result showed that the best prescription was that the mass fraction of NCO was 5% -6% and castor oil content was about 10% in rubbercement. The material could apply on preserve engineering when the proportion of rubbercemeat and liquid sulfuration agent was 8 - 10： 1, with solidification at room temperature, handicraft and smearing main area.