脲基潜伏性固化剂的环氧树脂体系的研究  

Study on Epoxy Resin System of Urea-based Latent Curing Agent

作　　者：闫志 任明伟 范广宏 周玉静 梅宝良 赵轮 YAN Zhi;REN Mingwei;FAN Guanghong;ZHOU Yujing;MEI Baoliang;ZHAO Lun(Beijing National Innovation Institute of Lightweight Co.,Ltd.,Beijing 100083;Dezhou Branch of Beijing National Innovation Institute of Lightweight Co.,Ltd.,Dezhou 253011)

机构地区：[1]北京机科国创轻量化科学研究院有限公司,北京100083 [2]北京机科国创轻量化科学研究院有限公司德州分公司,德州253011

出　　处：《纤维复合材料》2020年第4期12-15,34,共5页Fiber Composites

基　　金：“高档数控机床与基础制造装备”科技重大专项课题“汽车复合材料车身模压成形技术与装备”(2018ZX04026001);广东省肇庆市科技计划项目“基于快速制造的碳纤维复合材料在线湿法模压成套装备及典型制件开发”(2018K004);机械科学研究总院集团有限公司技术发展基金项目“汽车轻量化先进复合材料基体树脂研究及产业化”(211819Q9)。

摘　　要：为了制备环氧SMC片材专用树脂,采用双氰胺和有机取代脲类促进剂复配,并通过物理共混的方法,与双酚A类树脂(E51)、多官能团类环氧树脂和双酚F环氧树脂高速混合,制备脲基潜伏性固化剂的环氧树脂体系。采用凝胶化时间测试仪确定树脂体系的固化时间,在130℃固化时间为174s,并且没有爆聚现象发生。采用差示扫描量热仪(DSC)测试树脂体系的在130℃下玻璃化转变温度为120.2℃。采用万能材料试验机表征树脂体系的拉伸、弯曲和冲击力学性能,结果表明,三种环氧树脂混合后,浇筑件各力学性能较单一组分下浇铸件的力学性能有很大的提高。In order to prepare special resin for epoxy SMC sheet,This article studies latent curing agent and organic replace dicyandiamide urea class compound accelerator,and achieved the urea-based epoxy resin by physical blending method with bisphenol A type of resin E51,multifunctional epoxy resin and high speed mixing bisphenol F epoxy resin.The resin system showed the fast curing time of 174s at 130℃ without implosion phenomenon determined by gelation time tester.Differential scanning calorimeter(DSC)was used to test Tg with 120.2℃.Universal material testing machine was used to characterize the tensile,bending and impact mechanical properties of the resin system.The mechanical properties of the pouring parts were greatly improved compared with that of the casting parts under a single component.

关 键 词：潜伏性固化剂 环氧树脂 双氰胺 双酚F环氧树脂 脲 

分 类 号：U465.4[一般工业技术—材料科学与工程] TQ323.5[机械工程—车辆工程]