硅烷偶联剂KH570改性高岭土/丙烯酸酯复合压敏胶的制备和性能分析  

Preparation and Performance Analysis of Silane Couple Agent KH570 Modified Kaolin/Acrylate Composite Pressure Sensitive Adhesive

作　　者：楚金伟 万小东 韦晓星 南敬 CHU Jinwei;WAN Xiaodong;WEI Xiaoxing;NAN Jing(Ultra High Voltage Transmission Company of China Southern Power Grid Co.,Ltd,Guangzhou 510663,China;China Electric Power Research Institute Co.,Ltd,Wuhan 430074,China)

机构地区：[1]中国南方电网有限责任公司超高压输电公司检修试验中心,广东广州510663 [2]中国电力科学研究院有限公司电网环境保护国家重点实验室,湖北武汉430074

出　　处：《橡胶工业》2022年第9期674-681,共8页China Rubber Industry

基　　金：中国南方电网有限责任公司科技项目(0120002019030304GY00008)。

摘　　要：研究采用硅烷偶联剂KH570改性羟基化的高岭土(kaolin-OH),得到表面烯丙基官能化的高岭土(kaolin-KH570),其与丙烯酸酯类单体原位聚合制备可用于清除绝缘子表面污秽的kaolin-KH570/丙烯酸酯复合压敏胶(kaolin-KH570/丙烯酸酯PSA)。结果表明:当kaolin-KH570质量分数为1.5%时,kaolin-KH570/丙烯酸酯PSA的粘接性能最佳,与未添加kaolin的丙烯酸酯PSA相比,其初粘力、180°剥离强度和23℃持粘力分别提高35.7%,30.7%和128.6%;采用kaolin-KH570/丙烯酸酯PSA膜片对绝缘子表面清污,绝缘子表面的洗净率和除盐率可达到85.8%和80.6%,而憎水性从HC6级恢复至HC1级,且绝缘性能提高,提升了复合绝缘设备在污秽条件下运行的可靠性。In this study,the surface functionalized kaolin with allyl function groups(kaolin-KH570)was prepared by modification of the hydroxylated kaolin(kaolin-OH)using silane coupling agent KH570,and the kaolin-KH570/acrylate composite pressure sensitive adhesive(kaolin-KH570/acrylate PSA)which could be used as an efficient cleaner for the surface of insulators was produced by in situ polymerization of acrylate monomers with kaolin-KH570.The results showed that,when the mass fraction of kaolin-KH570 was 1.5%,the bonding performance of kaolin-KH570/acrylate PSA was the best,and compared with acrylate PSA without kaolin,its initial tackiness,180°peel strength and 23℃shear adhesion were increased by 35.7%,30.7%and 128.6%,respectively.After kaolin-KH570/acrylate PSA film was used to clean the surface of the insulators,the cleaning rate and salt removal rate of the insulator surface could reach 85.8%and 80.6%,respectively,at the same time the hydrophobicity could be restored from HC6 to HC1,insulation property could be improved,and the operational reliability of the composite insulation equipment under dirty conditions could be further improved.

关 键 词：丙烯酸酯 压敏胶 改性高岭土 硅烷偶联剂KH570 绝缘子 污秽清除 粘接性能 

分 类 号：TQ316.61[化学工程—高聚物工业] TQ433