知识与财富的链接
为提高室温硫化硅橡胶(RTV)胶粘剂粘接炸药的强度,采用原位填充白炭黑法增强甲基丙烯酸(酯)改性RTV胶粘剂,测试结果显示该胶粘剂粘接炸药时,粘接强度明显提高。硅橡胶黏度为4Pa·s,白炭黑含量为1.0%~2.5%时,配合适量交联剂、偶联剂,RTV胶粘剂粘接炸药的剪切强度超过3.2MPa,最高达3.52MPa。同时选用扫描电子显微镜(SEM)、红外(IR)等分析方法表征白炭黑的分散性、增强改性RTV胶粘剂的结构,结果表明采用原位填充法白炭黑在RTV胶粘剂中分散均匀,而且部分白炭黑与甲基丙烯酸(酯)改性硅橡胶形成共聚物,补强效果较共混法好。
In order to improve the adhesion strength of room temperature vulanized silicone rubber （RTV） adhesive bonding JOB-9003 explosive,silica white 2# or 4# were used to reinforce modified silicone rubber by methyl acrylic acid or ester in situ. The structure of reinforced RTV adhesive and dispersibility of silica white in adhesive were characterized by IR and SEM. Effects of different viscosities of silicone rubber,contents of silica white on shear strength of RTV adhesive were investigated. The results show that the adhesion strength of RTV adhesive is improved greatly,when the viscosity of silicone rubber is 4 Pa·s,the shear strength of 2# and 4# silica white reinforced RTV adhesive bonding JOB-9003 explosive increases from 3.2 MPa to 3.52 MPa as contents of silica white change from 1.0% to 2.5%,and the reinforcement effect of 4# silica white is better than that of 2# silica white in evidence.
