材料导报 2020, Vol. 34 Issue (Z2): 576-579
高分子与聚合物基复合材料
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一种快速固化的环氧树脂基预浸料及其性能
刘克健, 高玉龙
中车青岛四方机车车辆股份有限公司,青岛 266111
A Kind of Fast-curing Epoxy Resin Prepreg and Its Performance
LIU Kejian, GAO Yulong
CRRC Qingdao Sifang CO.,LTD., Qingdao 266111, China
摘要 快速固化成型是复合材料低成本成型的主要方法之一,合理选用固化成型工艺是实现材料性能的关键。本工作针对快速固化树脂体系AGMP3620,分别采用差示扫描量热法(DSC)、锥板流变仪测试了其固化性能、流变性能,结果表明该树脂在60 ℃下具有较好的稳定性,能够满足室温储存及热熔法预浸料的加工工艺要求,同时可实现120 ℃下20 min或150 ℃下10 min快速固化;然后,根据工艺性能测试结果,确定90 ℃@1.5 h、120 ℃@20 min、150 ℃@10 min三种固化程序,对不同程序固化后的复合材料的力学性能、动态热机械性能进行了测试,得知在120 ℃下固化20 min所得复合材料的力学性能最佳,为工程化应用选型奠定基础。
关键词:
预浸料
快速固化
固化性能
流变性能
复合材料
Abstract: Fast curing technique is one of the main directions for low-cost composites. The key to improve material properties is choosing curing process properly. The curing and rheological properties of the fast-curing resin system (AGMP3620) were studied by the method of diffe-rential scanning calorimetry (DSC) and cone plate rheometer. The results show that the resin has good stability at 60 ℃,which not only meets the requirements of room temperature storage and hot melt prepreg processing, but also can realize the rapid curing time of 20 min at 120 ℃ or 10 min at 150 ℃. According to the test results of processing condition properties, three curing procedures are determined: 90 ℃@1.5 h, 120 ℃@20 min and 150 ℃@10 min. The mechanical properties and dynamic thermo-mechanical properties of the cured composites through different procedures are tested. Comprehensive analysis shows that the cured composites at 120 ℃ for 20 min have the best mechanical properties, lays a foundation for engineering selection and application.
Key words:
prepreg
rapid curing
curing properties
rheological properties
composite materials
出版日期: 2020-11-25
发布日期: 2021-01-08
基金资助: 战略性国际科技创新合作重点专项(2018YFE0201300)
通讯作者:
nust.2008@163.com
作者简介: 刘克健,2009年7月毕业于南京理工大学,获得硕士学位。同年加入中车济南公司从事风电复合材料产品设计与研发,2015年8月加入中航复材(北京)科技有限公司负责预浸料及复材产品的研发,2019年3月加入中车青岛四方机车车辆股份有限公司从事轨道交通车辆的轻量化设计与研发工作。
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