硼酸镁晶须在聚丙烯中的应用

Application of Magnesium Borate Whisker in Polypropylene

以硼酸、乙醇胺、甲基丙烯酰氯为主要原料,合成了新型可聚合硼酸酯偶联剂BE-1。利用BE-1在硼酸镁晶须表面引发聚合形成有机涂层,并用改性后的硼酸镁晶须制备了硼酸镁晶须/聚丙烯(PP)复合材料。检测结果如下:由红外测试结果可以推断,合成产物即为可聚合硼酸酯偶联剂BE-1;在水解稳定性测试中BE-1稳定时间大于960 h,BE-1具有良好的溶解性及贮存性能;有机涂层形成的最佳反应温度为78℃,最佳反应时间为6 h;BE-1改性硼酸镁晶须/PP复合材料拉伸强度、弯曲强度、热变形温度分别比纯PP提高了30%、40%和104%,分别比未改性硼酸镁晶须/PP复合材料提高了11.05%、23.52%、15.29%。

A novel polymerizable borate ester coupling agent（BE-1）was prepared by boric acid,ethanolamine,and methacryloyl chloride.BE-1 was used in the magnesium borate whisker surface that formed the organic coatings by the polymerization,and PP/magnesium borate whisker composites were prepared by the modified magnesium borate whisker.The results revealed that IR test results can be inferred that synthetic product was boric acid ester polymer coupling agent BE-1.The hydrolytic stabilization time of BE-1 was longer than 960 h and the solubility and storage capacity of BE-1 was well.The best reaction temperature and time of organic coating was 78 ℃ and 6 h.Tensile strength,flexural strength,heat distortion temperature of the BE-1 modified whisker composites increased respectively by 30%,40% and 104% compared with polypropylene which was increased respectively by 11.05%,23.52% and 15.29% compared with unmodified magnesium borate whisker/PP.