PBO纤维增强复合泡沫绝缘材料的制备及性能研究  

Preparation and properties of PBO fiber-reinforced composite foam insulating materials

作　　者：刘云鹏[1] 麻云帆 刘贺晨[1] 张铭嘉 周松松 李乐[1] 田正波 苏铮 LIU Yunpeng;MA Yunfan;LIU Hechen;ZHANG Mingjia;ZHOU Songsong;LI Le;TIAN Zhengbo;SU Zheng(Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,China;China Electric Power Research Institute,Beijing 100192,China;Xiangyang Guowang Composite Insulators Co.,Ltd.,Xiangyang 410000,China)

机构地区：[1]华北电力大学河北省绿色高效电工新材料与设备重点实验室,河北保定071003 [2]中国电力科学研究院有限公司,北京100192 [3]襄阳国网合成绝缘子有限责任公司,湖北襄阳410000

出　　处：《绝缘材料》2023年第9期43-48,共6页Insulating Materials

基　　金：国家自然科学基金青年科学基金项目(52207023);中央高校面上科研项目(2022MS075)。

摘　　要：为了提高支柱复合绝缘子芯体用复合泡沫材料的强度,使用聚对苯撑苯并二噁唑(PBO)纤维增强复合泡沫材料,通过研究不同含量PBO纤维对复合泡沫材料热学、力学和绝缘性能的影响,确定适合于内绝缘应用的纤维含量。结果表明:PBO纤维的加入赋予了复合泡沫材料抵抗冲击破坏的能力,当PBO纤维质量分数为0.4%时,复合泡沫材料落锤冲击试验吸收的能量达到最高;PBO纤维的加入能够降低材料的热膨胀率,提升热稳定性,降低潜在的热应力风险,且对复合泡沫材料的内绝缘性能影响不大。In order to improve the strength of composite foam material used for post composite insulator core,the poly(pphenylene benzobisoxazole)(PBO)fiber was used to reinforce composite foam material,and the fiber content suitable for internal insulation applications was determined by studying the effects of different content of PBO fiber on the thermal,mechanical,and insulating properties of composite foam material.The results show that the addition of PBO fiber endows the composite foam materials with the ability to resist impact damage.When the mass fraction of PBO fiber is 0.4%,the energy absorbed by the composite foam materials in the drop weight impact test reaches the maximum.The addition of PBO fiber can decrease the thermal expansion rate of the material,improve the thermal stability,reduce the potential thermal stress risk,and has little effect on the internal insulation performance of composite foam materials.

关 键 词：复合泡沫 PBO纤维 环氧树脂 热性能 力学性能 

分 类 号：TM215[一般工业技术—材料科学与工程]