高性能双组分环氧树脂建筑结构胶的研制

摘要

以E-51环氧树脂为主体,自制改性聚酰胺380T与二乙烯三胺共混作为固化剂,研究了380T与二乙烯三胺的配比、固化剂用量、填料种类及用量,确定了最佳配方及固化条件.当mE51/m380T/m二乙烯三胺/m石英砂=100/26/4/ (200～300)时,结构胶常温固化7d的拉伸强度和剪切强度可分别达到52MPa和19.2 MPa,是一种力学性能优、粘接力强、韧性好、触变性及湿润性优的高性能双组分环氧树脂建筑结构胶.%In the article,E-51 epoxy resin was used as the main material,while diethylenetriamine and homemade modified polyamides 380T were used as the curing agent. The optimum experimental formulation and conditions were determined through the study of proportion of 380T and diethylenetriamine,curing agent amount,and type and content of fiiler.The tensile strength and shear strength of the structural adhesive after curing for 7 days at room temperature reached 52 MPa and 19.2 Mpa,respectively,when the proportion of E51,380T,diethylenetriamine and quartz sand was 100:26:4:200～300 by weight.The two compoment epoxy structural adhesive has high mechanical properties,bonding properties and toughness,and better thixotropy and wetting properties.