单组分端硅烷基聚醚密封胶的研制  

Preparation of One-component Silylated Polyether Sealant

作　　者：黄活阳 张剑 何晓军 冯炬佳 

机构地区：[1]广东新展化工新材料有限公司,广东中山528441

出　　处：《有机硅材料》2015年第4期320-324,共5页Silicone Material

摘　　要：以端硅烷基聚醚预聚体为原料,添加增塑剂、碳酸钙、硅烷偶联剂和催化剂等制得用于木地板粘接的单组分端硅烷基聚醚弹性密封胶;较佳配方为:MS预聚物100份、PPG3000为60份、纳米碳酸钙90份、重质碳酸钙90份、抗氧化剂0.5份、脱水剂4份、A-171为2份、A-1120为3份、有机锡类催化剂1份。在温度25℃、相对湿度50%条件下硫化10天后,密封胶的拉伸强度为1.18 MPa,伸长率为376%,硫化深度为5.0 mm。One-component silylated polyether sealant with silyl-terminated polyether used for bonding wood floor was prepared with plasticizer , calcium carbonate , titanium dioxide , silane coupling agent and cata-lyst,.The resulting optimal prescription was that 100 parts MS prepolymer, 60 parts PPG 3000, 90 parts nano-calcium, 90 parts heavy calcium carbonate , 0.5 part antioxidant, 4 parts dehydrating agent , 2 parts A-171, 3 parts A-1120, and 1 part organo-tin catalyst.The sealant had 1.18MPa tensile strength, 376%elon-gation, and 5.0mm vulcanization, under 25℃, relative humidity 50%for 10 days.

关 键 词：单组分 端硅烷基 聚醚 密封胶 有机硅 

分 类 号：TQ436.6[化学工程]