硅橡胶与金属钢热硫化粘接研究  

Study on hot vulcanization bonding of silicone rubber to metal steel

作　　者：张林军[1] 曾金芳[1] 余惠琴[1] 杨学军[1] 刘晓红[1] ZHANG Lin-jun, ZENG Jin-fang, YU Hui-qin, YANG Xue-jun, LIU Xiao -hong(Xi？ an Aerospace Composites Research Institute, Xi？ an, Shaanxi 710025, China)

机构地区：[1]西安航天复合材料研究所,陕西西安710025

出　　处：《粘接》2018年第4期42-46,共5页Adhesion

摘　　要：为了实现较高粘接强度和易操作的硅橡胶与金属钢的热硫化粘接,研究了胶粘剂成分、金属试片的处理方式和硅橡胶配方对粘接性能的影响。结果表明,采用p H值为8.5的胶粘剂溶液,可以获得较高的粘接强度,采用含有机钛类催化剂和过氧化物催化剂的胶粘剂C,可以使甲基乙烯基硅橡胶(110-2)和苯基硅橡胶(120-1)的粘接强度提高到3.0 MPa以上;使用180μm(80目)和120μm(120目)的砂纸打磨金属试片,均可达到橡胶内聚破坏;硅烷偶联剂与硅橡胶共混,可适当提高粘接强度,但硅橡胶硬度增加较快,出现部分脆性撕裂,且试验件脱模处理困难;随着改性白炭黑含量的增加,110-2拉伸强度增大,剪切强度最大可接近4.0 MPa,提高了硅橡胶与金属热硫化粘接的强度和可靠性。The hot vulcanization bonding of silicone rubber to metal steel was studied to achieve high bonding strength and to operate easily. In this paper, the effects of adhesive composition, metal treatment and silicone rubber formulation on the bonding properties were investigated. The results show that using solution with p H value of 8.5 obtains higher bonding strength. The bonding strength of 110-2 silicone rubber and 120-1 silicone rubber can be improved to 3.0 MPa and more by using the adhesive C containing the organic titanium catalyst and peroxide catalyst. Using 80 mesh and 120 mesh sandpaper to polish the metal test pieces can result in the rubber cohesion damage. Blending the silane coupling agent with silicone rubber can lead to slightly improving the bonding strength, but the hardness of silicone rubber increases rapidly, some brittle tearing occurs, and the test piece stripping is difficult. With increasing the content of modified silica, the tensile strength of 110-2 silicone rubber increases, and the maximum shear strength is close to 4.0 MPa, which improves the strength and reliability of the hot vulcanization bonding of silicone rubber to metal steel.

关 键 词：硅橡胶 热硫化 胶粘剂 粘接强度 剪切模量 

分 类 号：TG494[金属学及工艺—焊接]