复合材料爬架接头粘接设计与粘接工艺优化  

Bonding design and bonding process optimization of composite climbing frame joint

作　　者：王海燕 史玉芳[2] WANG Haiyan;SHI Yufang(CCCC Second Public Bureau Dongmeng Engineering Co.,Ltd.,Xi'an 710054,China;Xi'An University of Science and Technology,Xi'an 710054,China)

机构地区：[1]中交二公局东萌工程有限公司,陕西西安710054 [2]西安科技大学,陕西西安710054

出　　处：《粘接》2024年第5期13-16,共4页Adhesion

基　　金：教育部人文社科项目(项目编号:21YJA630078)。

摘　　要：为提高复合材料爬架的粘接强度和耐高温高压性能,通过研究粘接机制和力学性能变化规律,提出复合材料爬架单搭接的优化工艺,建立了复合材料爬架的粘结剂模型,基于应力集中系数优化胶粘剂材质、粘接长度、胶层厚度。研究结果表明,各因素对剥离强度的影响大小依次为增粘助剂用量、烘培时间、烘培温度,增粘助剂为3.0%、烘培温度为140℃、烘培时间为40s时为最优工艺参数值。所提方法的粘结剂的导热系数高达1.87W/(m·K),断裂伸长率高达198.56%。提高了粘接强度和可靠性。In order to improve the bonding strength and high temperature and high pressure resistance of the composite climbing frame,the optimization process of single lap joint of the composite climbing frame was proposed by studying the bonding mechanism and the change law of mechanical properties,and the adhesive model of the composite climbing frame was established,and the adhesive material,bonding length and glue layer thickness were optimized based on the stress concentration coefficient.The research results showed that the influence of various factors on the peel strength was the amount of tackifier,baking time and baking temperature,and the optimal process parameters were 3.0%for tackifier,140°C and 40 s.The thermal conductivity of the proposed adhesive was as high as 1.87 W/(m·K),and the elongation at break was as high as 198.56%,improving adhesive strength and reliability.

关 键 词：复合材料 粘结剂 优化设计 单搭接应力 剥离力 

分 类 号：TQ433.43[化学工程]