Synthesis of CO_(2)-Based Re-processable Slight Cross-Linked Polyurea Thermosets  

二氧化碳基可再加工微交联热固性聚脲的合成

作　　者：Huang Wenhan Jiang Shan Li Hui Zhao Fengyu Cheng Haiyang 黄文翰;姜山;李慧;赵凤玉;程海洋(中国科学院长春应用化学研究所电分析化学国家重点实验室、吉林省绿色化学与过程重点实验室,长春130022;中国科学技术大学应用化学与工程学院,合肥230026;上海大学材料科学与工程学院,上海200444)

机构地区：[1]Jilin Provincial Key Laboratory of Green Chemistry and Process,State Key Laboratory of Electroanalytical Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022 [2]School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026 [3]School of Materials Science and Engineering,Shanghai University,Shanghai 200444

出　　处：《有机化学》2024年第10期3178-3184,共7页Chinese Journal of Organic Chemistry

基　　金：国家自然科学基金(No.22172155)资助项目。

摘　　要：The use of CO_(2) as monomer to synthesize polymer materials is an important and potential applications topic from the viewpoint of green and sustainable chemistry.A new kind of CO_(2)-based polyurea(PUa)was synthesized by polycondensation of CO_(2) with 4,7,10-trioxa-1,13-tridecanediamine and tris(2-aminoethyl)amine(TAEA).TAEA was used as cross-link reagent.The mechanical properties of PUa were significantly improved by inserted the crosslink agent of TAEA.The formed slight cross-linked PUa exhibited excellent mechanical properties with tensile strength of 26.8 MPa,elongation at break of 34%and Young’s modulus of 351 MPa.Moreover,it could be remolded for 3 times without obvious change in the mechanical properties,which are ascribed to the hydrogen bonding interaction among the main chains and the slight cross-linked structure.In addition,the synthesized CO_(2)-based PUa is of outstanding thermal performance with an initial decomposition temperature above 300℃,besides it is tolerance for a variety of organic solvents.从绿色和可持续化学的角度,利用CO_(2)作为单体合成聚合物材料是一个重要而有潜在应用价值的研究课题.以CO_(2)与4,7,10-三氧杂-1,13-十三烷二胺和三(2-氨基乙基)胺(TAEA)进行缩聚反应,合成了一种新型的CO_(2)基聚脲(PUa).TAEA作为交联试剂,TAEA的加入显著改善了PUa的力学性能.所形成的微交联PUa表现出优异的机械性能,拉伸强度为26.8 MPa,断裂伸长率为34%,杨氏模量为351 MPa.此外,微交联PUa可以重塑3次,力学性能没有明显变化,这归因于主链之间的氢键相互作用和微交联结构的存在.此外,合成的CO_(2)基PUa具有优异的热性能,初始分解温度在300℃以上,并且对多种有机溶剂具有耐受性.

关 键 词：CO_(2) POLYUREA non-isocyanate re-processable THERMOSET slight cross-linking 

分 类 号：O631.5[理学—高分子化学]