聚丙烯/氧化锆复合材料的制备及介电性能研究

›› 2024, Vol. 38 ›› Issue (3): 44-48.

聚丙烯/氧化锆复合材料的制备及介电性能研究

国江¹,许梦伊²,李辉¹,黄想¹,林浩¹,姜胜宝¹,陈尚¹,陈程¹

1. 中国电力科学研究院有限公司
2. 中国电力科学研究院有限公司武汉分院

收稿日期:2023-08-01 修回日期:2023-09-25 出版日期:2024-03-26 发布日期:2024-03-26
基金资助:
直流电容器用纳米复合绝缘介质材料特性与制备工艺研究

Preparation and dielectric properties of polypropylene/ZrO2 composite materials

Received:2023-08-01 Revised:2023-09-25 Online:2024-03-26 Published:2024-03-26

摘要/Abstract

摘要： 通过乳液包覆法对氧化锆（ZrO2）粉末进行表面改性，以提高其在聚丙烯（PP）基体中的分散性，继而探究改性聚丙烯/氧化锆复合材料（PP/g-ZrO2）的介电性能、热学性能和力学性能。结果表明，1 kHz测试频率下时，当g-ZrO2添加含量为50 %时，PP/g-ZrO2的介电常数提高至4.28，介电损耗缓慢提升；此外，改性后复合材料在400 ℃时的热稳定性明显提高，当g-ZrO2添加量为20 %时，复合材料拉伸强度可达38.33 MPa，结合改性前后ZrO2在PP基体中的团聚状态分析，当ZrO2填料添加量为30 %时，复合材料的综合性能最优。

关键词: 氧化锆, 聚丙烯, 介电性能, 热稳定性, 复合材料

Abstract: The surface modification of zirconium oxide （ZrO2） powders was performed through emulsion coating to improve their dispersion in the polypropylene （PP） matrix. The dielectric， thermal， and mechanical properties of the modified ZrO2/PP （PP/g-ZrO2） composites were investigated. The results indicated that the dielectric constant of the PP/g-ZrO2 composites increased to 4.28， and their dielectric loss increased from 0.007 1 to 0.068 at a frequency of 1 kH at a ZrO2 content of 50 wt%. In addition， the thermal stability of the PP/g-ZrO2 composites was significantly improved， and their tensile strength reached 38.33 MPa at a ZrO2 content of 20 wt%. Through analyzing the agglomeration state of ZrO2 in the PP matrix before and after modification， the composites achieved optimal overall performance at a ZrO2 content of 30 wt%.

Key words: zirconium oxide, polypropylene, dielectric property, thermal stability, composite

国江许梦伊李辉黄想林浩姜胜宝陈尚陈程. 聚丙烯/氧化锆复合材料的制备及介电性能研究[J]. , 2024, 38(3): 44-48.

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