有机化学 ›› 2024, Vol. 44 ›› Issue (10): 3178-3184.DOI: 10.6023/cjoc202405045 上一篇    下一篇

研究论文

二氧化碳基可再加工微交联热固性聚脲的合成

黄文翰a,b,†, 姜山c,†, 李慧a,b, 赵凤玉a,b,*(), 程海洋a,b,*()   

  1. a 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
    b 中国科学技术大学应用化学与工程学院 合肥 230026
    c 上海大学材料科学与工程学院 上海 200444
  • 收稿日期:2024-05-29 修回日期:2024-08-22 发布日期:2024-09-10
  • 作者简介:共同第一作者
  • 基金资助:
    国家自然科学基金(22172155)

Synthesis of CO2-Based Re-processable Slight Cross-Linked Polyurea Thermosets

Wenhan Huanga,b,†, Shan Jiangc,†, Hui Lia,b, Fengyu Zhaoa,b,*(), Haiyang Chenga,b,*()   

  1. a 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
    b School of Applied Chemistry and Engineering, University of Science and Technology of China, Hefei 230026
    c School of Materials Science and Engineering, Shanghai University, Shanghai 200444
  • Received:2024-05-29 Revised:2024-08-22 Published:2024-09-10
  • Contact: *E-mail: zhaofy@ciac.ac.cn;hycyl@ciac.ac.cn
  • About author:These authors contributed equally to this work
  • Supported by:
    National Natural Science Foundation of China(22172155)

从绿色和可持续化学的角度, 利用CO2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CO2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CO2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CO2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: CO2, 聚脲, 非异氰酸酯, 可再加工, 热固性, 微交联

The use of CO2 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 CO2-based polyurea (PUa) was synthesized by polycondensation of CO2 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 CO2-based PUa is of outstanding thermal performance with an initial decomposition temperature above 300 ℃, besides it is tolerance for a variety of organic solvents.

Key words: CO2, polyurea, non-isocyanate, re-processable, thermoset, slight cross-linking