聚丙烯接枝4-丙氧烯基-2-羟基二苯甲酮材料的制备

Preparation of polypropylene grafted 4-propoxy-2-hydroxybenzophenone

采用熔融密炼工艺制备聚丙烯(PP)接枝4-丙氧烯基-2-羟基二苯甲酮(AHB),研究了接枝的工艺及其体积电阻率的变化。结果表明,当温度200℃,转子转速50r/min,时间9min,物料比为m(PP)∶m(AHB)∶m(DCP)=50∶0.8∶0.03(质量比)时,接枝率为0.73%,其体积电阻率比纯PP的有明显的提高,达2.1倍。为制备高电性能环保型聚丙烯电缆绝缘材料提供了有效的途径。

In this paper, PP-g-AHB was prepared by melt grafting methodand the grafting rate of the process and the change of volume resistivity were studied. The results show that when the temperature was 200 ℃, rotor speed was 50 r/min, time was 9 min,and the material ratio was m （PP）∶ m （AHB）∶ m （DCP）=50∶0.8∶0.03, the grafting ratio was 0.73% and the volume resistivity significantly increased, which was 2.1 times that of pure PP. It provides an effective way to prepare high-electricity environment-friendly polypropylene cable insulation materials.