疏水性气相SiO<sub>2</sub>改性环氧树脂的耐电晕性能

赵伟; 陈昊; 范勇

doi:10.13801/j.cnki.fhclxb.20180925.001

疏水性气相SiO₂改性环氧树脂的耐电晕性能

doi: 10.13801/j.cnki.fhclxb.20180925.001

赵伟¹,
陈昊¹,
范勇^1,2,

1.
哈尔滨理工大学材料科学与工程学院, 哈尔滨 150040;
2.
哈尔滨理工大学工程电介质及其应用教育部重点实验室, 哈尔滨 150080

基金项目: 国家自然科学基金（51277044）

详细信息

通讯作者:
范勇,博士,教授,博士生导师,研究方向为电介质材料,E-mail:fyzf318@126.com

中图分类号: TB332
计量
- 文章访问数: 775
- PDF下载量: 200
- 被引次数: 0
出版历程
- 收稿日期: 2018-07-23
- 刊出日期: 2019-08-15

Corona resistance performance of epoxy resin modified by hydrophobic fumed SiO₂

ZHAO Wei¹,
CHEN Hao¹,
FAN Yong^{1,2
,}

1.
College of Materials Science and Engineering, Harbin University of Science and Technology, Harbin 150040, China;
2.
Key Laboratory of Engineering Dielectric and Its Application, Ministry of Education, College of Materials Science and Engineering, Harbin 150080, China

摘要

摘要: 采用砂磨机将疏水性气相SiO₂纳米粒子分散到无溶剂环氧树脂（Epoxy，EP）中，经加热固化后制备了不同掺杂量的疏水性气相SiO₂/EP复合材料，通过XRD检测和SEM表征，证实疏水性气相SiO₂纳米粒子以无定形态均匀分散在EP中。疏水性气相SiO₂/EP复合材料的理化性能测试结果表明：其热稳定性、介电常数、介电损耗和电导率均随纳米SiO₂粒子掺杂量的增加而有所升高；纳米SiO₂粒子掺杂量为2wt%时，击穿场强达到最大值为24.66 kV/mm，较纯EP材料提高了21.35%；疏水性气相SiO₂/EP复合材料耐电晕寿命随纳米SiO₂粒子掺杂量增加而增加。在室温、80 kV/mm电场强度下，纳米SiO₂粒子掺杂量为8wt%时，疏水性气相SiO₂/EP耐电晕寿命可达42.7 h，是纯EP的18.9倍。
- 环氧树脂 /
- 疏水性气相SiO₂ /
- 耐电晕寿命 /
- 介电性能 /
- 热稳定性
Abstract: The hydrophobic fumed SiO₂ particles were dispersed in solvent-free epoxy resin (EP) by sand milling, hydrophobic fumed SiO₂/EP composites with different hydrophobic fumed SiO₂ mass fractions were prepared by heating and curing. The results of XRD detection and SEM observation confirm that the hydrophobic fumed SiO₂ nanoparticles are uniformly dispersed in EP in amorphous form. The results of the physical and chemical properties of the hydrophobic fumed SiO₂/EP composites show that the thermal stability, dielectric constant, dielectric loss and electrical conductivity of the hydrophobic fumed SiO₂/EP composites increase with the increase of the doping amount of SiO₂ nanoparticles. The breakdown field strength reaches the maximum value of 24.66 kV/mm with 2wt% nanoparticle addition, which is 21.35% higher than the pure EP. When the doping amount of SiO₂ nano particles is 8wt%, the corona life of the hydrophobic fumed SiO₂/EP can reach 42.7 h, which is 18.9 times that of the pure EP.
- epoxy resin /
- hydrophobic fumed SiO₂ /
- corona resistance life /
- dielectric properties /
- thermal stability