碳酸钙填充硅酮密封胶弹性回复性能研究初探  

Studying on Elastic Recovery of Silicone Sealants Filled with Calcium Carbonate

作　　者：朱勇 覃玲意 陈霞 莫英桂 蓝擎 张安将[2] 徐禄波 

机构地区：[1]广西华纳新材料科技有限公司,广西南宁530103 [2]中国科学院宁波材料技术与工程研究所,浙江宁波315201

出　　处：《中国建筑防水》2017年第17期9-16,共8页China Building Waterproofing

摘　　要：以α,ω-二羟基聚二甲基硅氧烷(107胶)、二甲基硅油(201)以及自制碳酸钙为主要原料制备了硅酮密封胶,研究了107胶分子量,二甲基硅油用量,碳酸钙的比表面积、表面改性以及微观形貌等对硅酮密封胶弹性回复性能的影响。实验结果表明,适当提高107胶黏度、增加硅油用量、降低碳酸钙比表面积、增加碳酸钙表面处理剂用量或采用形貌规整的立方形纳米碳酸钙,均有利于改善碳酸钙填充硅酮密封胶弹性回复性能。Silicone sealant was prepared by α, ω-dihydroxy polydimethylsiloxane （107 glue）, polydimethylsiloxane （201）, and calcium carbonate. The influences of molecular weight of 107 glue, polydimethylsiloxane content, and specific surface area, surface modification and micro morphology of calcium carbonate on the elastic recovery property of silicone sealant were studied. The results showed that higher viscosity of 107 glue, higher polydimethylsiloxane content, lower specific surface area, more surface coating or regular cubic morphology of calcium carbonate were conducive to improve the elastic recovery of silicone sealants.

关 键 词：硅酮密封胶 107胶 二甲基硅油 碳酸钙 弹性回复性能 机理 

分 类 号：TU578[建筑科学—建筑技术科学]