α-氰基丙烯酸酯胶粘剂改性后的水下粘结性能  

Underwater Adhering Performance of α-Cyanoacrylate Adhesive Modified with Nano-Silica

作　　者：刘贺年[1] 盛明爽[2] 刘海峰[2] 赖建云 潘肇基[2] 侯书恩[1] 张小红[2] 李军[2] 郭志华[2] 

机构地区：[1]中国地质大学材料科学与化学工程学院,湖北武汉430074 [2]武汉材料保护研究所,湖北武汉430030 [3]中国船舶重工集团第七一○研究所,湖北宜昌443003

出　　处：《材料保护》2009年第11期52-54,共3页Materials Protection

摘　　要：为了提高α-氰基丙烯酸酯胶粘剂在水下的快速粘结性能,用纳米SiO2和硅烷偶联剂KH-500对其进行改性,用红外光谱表征了硅烷偶联剂处理纳米SiO2提高α-胶粘结强度的机理,并通过扫描电镜(SEM)分析了纳米SiO2在α-氰基丙烯酸酯胶粘剂中的分散性及增韧机理。结果表明,改性后的α-氰基丙烯酸酯胶粘剂中引入了Si-O-C键,使其在水下5 s快速粘结钢板和铝板的附着力大大提高。Silane couplingagent KH-500 and nano-SiO2 were used to modify α-cyanoacry-late adhesive so as to increase its adhesion on iron and steel sub-strates. The mechanism for nano-SiO2 to increase the adhesion tosubstrate and toughness of α-cyanoacrylate adhesive and themicrostructure of the modified adhesive were analyzed by means ofinfrared spectrometry and scanning electron microscopy.Moreover, the underwater adhering performances of the modifiedadhesive for steel and aluminum were evaluated. Results indicatethat Si-O-C bond is formed after chemical modification of α-cya-noacrylate adhesive by silane coupling agent and nano-SiO2,which contributed to greatly increased underwater adhesion of themodified adhesive on iron and steel substrates.

关 键 词：Α-氰基丙烯酸酯 胶粘剂 改性 水下粘结 快速粘结 纳米SIO2 

分 类 号：TQ433.43[化学工程]