Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (7): 20220236.doi: 10.7503/cjcu20220236

• Article • Previous Articles     Next Articles

Synthesis and Property of CO2 Copolymer⁃based UV-curable Polymer

WANG Zhengwen1,2, GAO Fengxiang1,2, CAO Han2, LIU Shunjie1,2(), WANG Xianhong1,2(), WANG Fosong1,2   

  1. 1.School of Applied Chemistry and Engineering,University of Science and Technology of China,Hefei 230026,China
    2.CAS Key Laboratory of Polymer Ecomaterials,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China
  • Received:2022-04-11 Online:2022-07-10 Published:2022-05-10
  • Contact: LIU Shunjie,WANG Xianhong E-mail:sjliu@ciac.ac.cn;xhwang@ciac.ac.cn
  • Supported by:
    the National Key Research and Development Program of China(2021YFD1700700);the National Natural Science Foundation of China(51988102)

Abstract:

To overcome the strong hydrophilicity of terminal hydroxyl group from low molecular weight prepolymer, high molecular weight(>40000) CO2 copolymer was synthesized through the terpolymerization of CO2, cyclohexene oxide and 4-vinyl-1,2-cyclohexene oxide using Zn-Co double metal cyanide as catalyst. The thiol-ene click chemistry was then carried out using pentaerythritol tetra(3-mercaptopropionate) as curing agent under suitable dosage of ultraviolet light irradiation. A highly transparent film could be obtained at an irradiation dose of 5.0 mJ/cm2, whose transmittance at visible light(400—750 nm) reached 97.5%, with pencil hardness of 3H and adhesion of 5B on tinplate surface by cross-cut test in ASTM D3359. It is noteworthy that the film has glass transition temperature over 110 ℃, well comparable with bisphenol A type epoxy resin, while it has the specific advantage of UV-resistance since it is aromatic ring free.

Key words: CO2 copolymer, Thiol-ene click reaction, UV-curable polymer

CLC Number: 

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