低模量高伸长率室温硫化水性硅酮密封胶的研制  

DEVELOPMENT OF RTV WATER-BASED SILICONE WITH LOW MODULUS AND HIGH ELONGATION

作　　者：彭忠利[1] 王海鹰 伍青[3] 王跃林 

机构地区：[1]惠州学院化学工程系,广东惠州516007 [2]广东省白云粘胶工程技术研究开发中心,广东广州510510 [3]中山大学高分子研究所,广东广州510275 [4]广州吉必时纳米材料工程技术开发中心,广东广州510510

出　　处：《惠州学院学报》2005年第3期1-6,共6页Journal of Huizhou University

摘　　要：　以聚硅氧烷乳液为基料,加入适量的交联剂、增粘剂、催化剂、填料制备了低模量高伸长率室温硫化水性硅酮密封胶,该密封胶的哑铃型拉伸试样和H型粘接拉伸试样的模量(100%定伸应力)小于0 4MPa,哑铃型试样断裂伸长率达1000%以上,H型粘接拉伸试样(对玻璃、铝材和石材)断裂伸长率大于500%,并显示为胶内聚破坏.<Abstrcat> By the use of silicone emulsion as base stock, adding crosslinker, adhesion promoter, catalyst and filler, RTV water-based silicone sealant with low modulus and high elongation was prepared. Both dumbbell rubber sheet sample and H type tensile-adhesion speciman have the modulus lower than 0.4 Mpa. Elongation, at break, of the dumbbell rubber sheet is over 1000%, and that of the H type tensile-adhesion specimen over 500%. The adhesions to glass, aluminium and marble of this silicone sealant exhibit cohesive failure.

关 键 词：水基型 有机硅 密封胶 低模量 高伸长率 室温硫化 

分 类 号：O634.4[理学—高分子化学] TQ316.33[理学—化学]