SiO_(2)气凝胶和纳米TiO_(2)填充水性聚氨酯改性聚酰亚胺在电弧防护上的应用  

Application of polyimide modified by nano SiO_(2)aerogel and nano TiO_(2)filled waterborne polyurethane in arc protection

作　　者：夏翔 路兴帅 魏迪 胡媛媛[2] 李忠宇 程百儒 段雄英[3] 廖敏夫[3] XIA Xiang;LU Xingshuai;WEI Di;HU Yuanyuan;LI Zhongyu;CHENG Bairu;DUAN Xiongying;LIAO Minfu(Xiaogan Electric Power Supply Company of State Grid Hubei Electric Power Co.,Ltd.,Xiaogan 432000,China;Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute,Wuhan 430000,China;Dalian University of Technology,Dalian 116000,China)

机构地区：[1]国网湖北省电力有限公司孝感供电公司,湖北孝感432000 [2]国网电力科学研究院武汉南瑞有限责任公司,湖北武汉430000 [3]大连理工大学,辽宁大连116000

出　　处：《绝缘材料》2024年第10期91-97,共7页Insulating Materials

基　　金：国网湖北省电力有限公司孝感供电公司科技项目(5215K0230003)。

摘　　要：为探究涂层改性的聚酰亚胺织物的防电弧性能,本研究使用水性聚氨酯为基体,分别制备了以SiO_(2)气凝胶为填料的阻隔型隔热涂料和以TiO_(2)为填料的反射型隔热涂料。分别将两种涂料涂敷在聚酰亚胺织物上,考察在故障电弧作用下,填料添加量和基体对聚酰亚胺织物热防护性能和破裂性能的影响。结果表明:改性后的聚酰亚胺织物的热防护性能随填料添加量增加而提升,添加6%的SiO_(2)和6%的TiO_(2)隔热涂层分别使聚酰亚胺热防护性能提高了34.79%和21.78%;水性聚氨酯基体对聚酰亚胺织物的热防护性能无影响,但使其破裂性能提升了20%。In order to investigate the arc resistance of coating modified polyimide fabric,a waterborne polyurethane was used as matrix to prepare a barrier thermal insulating coating with SiO_(2)aerogel and a reflective thermal insulating coating with TiO_(2)filler,and then two coatings were applied on the polyimide fabric,respectively.The effect of filler addition amount and the matrix on the thermal protection performance and rupture performance of polyimide fabric under the effect of fault arc was studied.The results show that the thermal protection performance of the modified polyimide fabric increases with the increase of filler addition,the thermal protection performance of polyimide modified by thermal insulating coating with 6%of SiO_(2)and 6%of TiO_(2)increases by 34.79%and 21.78%,respectively.Waterborne polyurethane matrix has no effect on the thermal protection performance of polyimide fabrics,but it can make their rupture performances increase by 20%.

关 键 词：分隔聚酰亚胺 电弧防护 热防护性能 破裂性能 

分 类 号：TM215[一般工业技术—材料科学与工程] TQ323.7[电气工程—电工理论与新技术]