文献类型：期刊文献

中文题名：高性能桐油基酸酐类环氧固化剂研究

英文题名：Study on high-performance tung oil-based anhydride epoxy curing agent

作者：付盼[1,2] 谭欣[1] 肖来辉[2] 聂小安[2] 黄金瑞[2,3] 张琳[1]

第一作者：付盼

机构：[1]中南林业科技大学经济林培育与保护省部共建教育部重点实验室,湖南长沙410004;[2]中国林业科学研究院林产化学工业研究所生物质化学利用国家工程实验室,国家林业和草原局林产化学工程重点实验室,江苏省林业资源高效加工利用协同创新中心,江苏省生物质能源利用与材料重点实验室,江苏南京210042;[3]中国林科院林业新技术研究所,北京100091

年份：2021

卷号：36

期号：2

起止页码：22-30

中文期刊名：热固性树脂

外文期刊名：Thermosetting Resin

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2021_2022】；

基金：国家“十三五”重点研发计划(2017YFD0600703);中国林科院林业新技术所基本科研业务费专项资金(CAFYBB2019SY028);国家自然科学基金青年项目(5180030924)。

语种：中文

中文关键词：桐油;酸酐固化剂;环氧树脂;固化反应动力学;拉伸强度;断裂伸长率;弹性模量

外文关键词：tung oil;acid anhydride curing agent;epoxy resin;curing reaction kinetics;tensile strength;elongation at break;elastic modulus

分类号：TQ323.5

摘要：针对目前桐油基酸酐环氧固化体系柔韧性与强度不能兼具的问题,以桐油为原料,通过酯交换、酯化、双烯加成等反应合成出含有2个羧基和1个酸酐的桐丁马酸酐(TBMA)。采用红外光谱、核磁氢谱、非等温DSC分析、力学性能及热稳定性测试等研究了TBMA固化环氧体系的反应动力学及性能并与桐油酸酐以及桐马酸酐环氧固化体系作了对比。结果表明,TBMA固化体系的反应活化能为72.82 kJ/mol,指前因子A为3.25×10^(8)s^(-1),固化反应级数为0.91,最优固化条件为120℃/2 h+140℃/2 h+160℃/2 h。固化体系的拉伸强度为49.61 MPa,断裂伸长率为14.86%,弹性模量为2 364.48 MPa,拉伸剪切强度为16.78 MPa,具有高强度、高模量、高柔韧性特点,并且其综合性能优于目前现有的桐油酸酐、桐马酸酐以及桐油聚酰亚胺酸酐固化体系。
Aiming at the problem that the current tung oil-based acid anhydride epoxy curing system could not have both flexibility and strength,a tung butyric maleic anhydride(TBMA) containing two carboxyl groups and one anhydride group was synthesized using tung oil as a raw material, through transesterification, esterification, diene addition and other reactions. The reaction kinetics and propertoes of TBMA cured epoxy system were investigated by Infrared spectroscopy, hydrogen nuclear magnetic spectrum, non-isothermal DSC analysis,mechanical properties and thermal stability tests and compared with those of tung oil anhydride and tung maric anhydride cured epoxy systems.. The results showed that the reaction activation,energy index factor A and curing reaction order of the curing system of TBMA was 72.82 kJ/mol,3.25×10^(8)s^(-1),and 0.91,respectively. The optimal curing condition was 120 ℃/2 h + 140 ℃/2 h + 160 ℃/2 h. The tensile strength,elongation at break,elastic modulus and tensile shear strength of of the cured system was 49.61 MPa, 14.86%, 2 364.48 MPa and 16.78 MPa, respectively. It had the characteristics of high strength, high modulusand high flexibility. The performance of TBMA cured epoxy resin was better than the existing curing systems of tung oil anhydride,tung maric anhydride and tung oil polyimide anhydride.