含环氧基和乙烯基硅氧烷增粘剂对阻燃导热加成型有机硅灌封胶性能的影响  

Effect of Siloxanes Adhesion Promoter Containing Vinyl and Epoxy Group on the Properties of Flame Retardant and Thermal Conductive Addition-Cure Silicone Encapsulant

作　　者：潘科学[1] 李红强[1] 赖学军[1] 胡新嵩 曾幸荣[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广州510450 [2]广州市高士实业有限公司,广州510640

出　　处：《广东橡胶》2014年第5期13-19,共7页Guangdong Rubber

摘　　要：以端乙烯基硅油为基胶、含氢硅油为交联剂、氧化铝为导热填料、氢氧化铝为阻燃剂、含环氧基和乙烯基硅氧烷为增粘剂制备了具有良好导热、阻燃及粘接性能的有机硅灌封胶。研究了（3-环氧丙氧基丙基）烯丙氧基二甲氧基硅烷（GAMS）、[2，2-双（烯丙氧基甲基）丁氧基]（3-环氧丙氧基丙基）二甲氧基硅烷（AGMS）和[3-烯丙氧基-2，2-双（烯丙氧基甲基）丙氧基]（3-环氧丙氧基丙基）二甲氧基硅烷（AAGMS）对加成型有机硅灌封胶性能的影响。结果表明，三种增粘剂均能有效的提高有机硅灌封胶的粘接性能和力学性能，其中含有较多C=C）I）L键的AAGMS效果最好，但会提高有机硅灌封胶的粘度。当AAAGMS的用量为1．5份时，灌封胶具有较好的综合性能，粘度为7200MPa·s，剪切强度为1.31MPa，拉伸强度为3．43MPa，断裂伸长率为52％，热导率为0．583W·m-1·K-1，垂直燃烧级另U达至qUL-94 v-0级。Silicone encapsulant with good thermal conductivity, flame retardance andadhesion was prepared with vinyl end silicone oil as basic gum, hydrogen silicone oilas crosslinking agent, AI203 as thermally conductive filler, AI（0H）3 as flame retardantand siloxanes containing vinyl and epoxy group as adhesion promoter. The influence of（3-glycidoxypropyl） allyloxydimethoxysilane（3-glycidoxypropyl） dimethoxysilane （AGMS）（GAMS）, [2, 2-bis （allyloxymethyl） butoxy]and [3-allyloxy-2, 2-bis （allyloxymethyl）propoxy] （3-glycidoxypropyl） dimethoxysilane （AAGMS） on the properties of siliconeencapsulant were investigated. The results showed that three types of adhesion promoterscould effectively enhance the adhesion strength and mechanical properties of siliconeencapsulant. Among them, AAGMS with more C=C bonds gave the best adhesion strength andmechanical properties of silicone encapsulant, but it would increase the viscosity ofsilicone encapsulant. When the content of AAGMS was 1.5 phr, the silicone encapsulantpossessed good comprehensive performance. The viscosity was 7200 mPa s, the shearstrength was 1.31 MPa, the tensile strength was 3.43 MPa, the elongation at. break was52%, the thermal conductivity was 0.583 W-ma UL-94 V-O ratingand the vertical burning test achieved

关 键 词：含环氧基和乙烯基硅氧烷 增粘剂 有机硅灌封胶 阻燃 导热 

分 类 号：TQ633[化学工程—精细化工]