纳米CaCO3/PU弹性体复合材料力学性能研究  

Study on Mechanical Properties of Nano-sized CaCO3/PU Elastomer Composites

作　　者：康永 KANG Yong(Yulin new science and Technology Development Co.,Ltd.,YuLin 718100,China)

机构地区：[1]榆林市新科技开发有限公司,陕西榆林718100

出　　处：《广东橡胶》2018年第6期18-24,30,共8页Guangdong Rubber

摘　　要：本文以甲苯-2、4-二异氰酸酯（TDI）、聚四氢呋喃醚二醇-1000（PTMG）以及3,3-二氯-4,4-二苯基甲烷二胺（MOCA）为合成原料,并采用预聚法合成浇注聚氨酯弹性体.选用纳米CaCO3粒子颗粒对聚氨酯弹性体改性研究,并且以微米级Si3N4粒子作为参照组,对两类复合材料试样进行了力学性能和磨损性能的测试.实验结果表明：纳米CaCO3粒子改性纯PU弹性体的复合材料力学性能有一定的提高,并且纳米CaCO3粒子质量分数达到1%时,其力学性能最佳;纳米CaCO3/PU弹性体复合材料综合力学性能和磨损性能要比微米Si3N4/PU弹性体复合材料好.In this paper, polyurethane nano-composites were prepared prepolymer which was synthesized from diisocyanate（TDI）, polytetrahydrofuran（PTMG）, aromatic diamine（MOCA） firstly. Then the prepolymer was prepared by prepolymerization process, and the properties of polyurethane elastomer was strengthened by nano-CaCO3, The mechanical properties and erosion wear of the polyurethane nano-composite were tested and compared with the micron-Si3N4 composite. The results showed that the mechanical properties of polyurethane composite were enhanced by nano-CaCO3, and it had the best properties when the composite had 1% nano-CaCO3. The mechanical properties and erosion wear of PU/nano-CaCO3 composite were better than PU/micron--Si3N4 composite.

关 键 词：聚氨酯 纳米碳酸钙 力学性能 分散性 表面改性 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]