复合材料高温试样加强片应用浅析

Application Analysis on the Reinforced Sheets for High Temperature Composite Specimens

本文对制备纤维增强复合材料高温力学试样使用的加强片和胶粘剂,以及一体成型试样进行了研究。本文对粘贴加强片的胶粘剂进行了研究和验证,包括双组份耐高温胶粘剂、多组份耐高胶粘剂、结构胶膜和双马树脂;对加强片材质进行了研究和验证,包括金属加强片和复合材料加强片;对加强片与试样的一体成型工艺进行了研究。结果表明:不同胶粘剂的工艺条件不同,应用的范围也有较大差异;高温试验中,复合材料加强片更为适用,推荐使用耐高温树脂体系,纤维布或0°/90°正交铺层的加强片;加强片采用与试样本身一体共固化的方式成型,可以制备标准的高温力学试样,有效避免二次粘接引起的影响。

In this paper,the reinforced sheets and adhesive for preparing fiber-reinforced composite specimens while used in high temperature mechanical text were studied.This paper also studied the integrated molding process of reinforced sheets and specimens.In the study and validation of adhesive for pasting reinforced sheets,we used two-component high-temperature resistant adhesive,multi-component high-temperature resistant adhesive,structural adhesive film,and bismaleic resin.In the study and validation of materials of reinforced sheets,we used metal and composite materials.The results showed that:The application range of different adhesives was affected by process conditions.In high-temperature mechanical tests,composite reinforced sheets were more suitable,and it was recommended to use high-temperature resistant resin systems,fiber cloth,or reinforced sheets with 0°/90°orthogonal layers.In the preparation process of standard high-temperature mechanical specimens,the forming method of reinforced sheets and specimens co-curing was adopted.This method can effectively avoid the impact caused by secondary bonding.