可拉伸环氧聚合物的制备与修复性能  

Preparation and Properties of Epoxy with Self-Healing and Stretchable Property

作　　者：李晗 郭亚昆[2] 王晓方[2] 周元林[1] 李银涛[1] 帅茂兵[2] Han Li;Yakun Guo;Xiaofang Wang;Yuanlin Zhou;Yintao Li;Maobing Shuai(State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, China;Institute of Materials, China Academy of Engineering Physics, Mianyang 621908, China)

机构地区：[1]西南科技大学四川省非金属复合与功能材料重点实验室-省部共建国家重点实验室培育基地,四川绵阳621010 [2]中国工程物理研究院材料研究所,四川绵阳621908

出　　处：《高分子材料科学与工程》2018年第2期56-62,共7页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(51573172);中国工程物理研究院材料研究所所长基金(SJZ201506)

摘　　要：采用不同摩尔比的辛二醇缩水甘油醚(OCG)和含呋喃-马来酰亚胺可逆共价键的环氧缩水甘油醚(FDB)的单体混合物与等当量的聚醚胺(D230)制备了一系列含有可逆共价键的环氧聚合物材料。通过红外光谱、差示扫描量热、热分析、扫描电镜、力学性能测试和光学显微观察等研究了OCG/FDB摩尔比对环氧聚合物热性能、力学性能和修复性能的影响。结果表明,环氧聚合物的玻璃化转变温度随着OCG/FDB摩尔比的增加而降低,拉伸模量、断裂伸长率和低温(70℃)修复率出现先升高后降低的趋势;当n(OCG)/n(FDB)=1.5时,拉伸模量达到(9.57±0.12)MPa,断裂伸长率达到315.8%±3.9%,修复率达到78.86%±6.17%。所制备的环氧聚合物同时具有较高的拉伸性能和较好的修复性能。Epoxy polymer materials with furan-maleimide reversible covalent bonds were prepared by mixing different mole ratio of octylene glycidyl ether（OCG） and reversible epoxy glycidyl ether（FDB） with equivalent polyether amine（D230）. The films were characterized by IR,DSC,TGA,SEM,mechanical test and OM observation. The effects of the mole ratio of OCG to FDB on properties of the epoxy polymer were investigated. The results show that the glass transition temperature of epoxy polymer decreases with increase of the mole ratio of OCG to FDB,while the tensile modulus,elongation at break and the healing property at 70 ℃ increase first and then decrease. The prepared epoxy polymer has better mechanical and healing properties. The maximum tensile modulus is（9.57±0.12） MPa,the highest elongation at break is 315.8% ±3.9%,and the best healing efficiency at 70 ℃/24 h is 78.86% ±6.17% with the mole ratio of OCG to FDB of1.5.

关 键 词：环氧聚合物 自修复 可拉伸 呋喃-马来酰亚胺可逆共价键 

分 类 号：O633.1[理学—高分子化学]