CRCU

Chemical Research in Chinese Universities ›› 2017, Vol. 33 ›› Issue (6): 1007-1011.doi: 10.1007/s40242-017-7088-8

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Mechanical and Thermal Properties of Waterborne Polyurethane Films Modified by CaCO3@TiO2 Particles with UV Absorption Activity

JIANG Tiechao1, FAN Qingqiu2, HUANG Chunying2, LI Zhen2, GUO Lijie2, ZHOU Bing2   

  1. 1. China-Japan Union Hospital of Jilin University, Changchun 130031, P. R. China;
    2. College of Chemistry, Jilin University, Changchun 130021, P. R. China
  • Received:2017-03-09 Revised:2017-05-19 Online:2017-12-01 Published:2017-09-18
  • Contact: ZHOU Bing,E-mail:zhoubing@jlu.edu.cn E-mail:zhoubing@jlu.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21671078).

Abstract: CaCO3@TiO2 particles were synthesized through a direct carbonation method, which can be used as the substitutes of TiO2 in pigments and coatings. To improve the dispersion in waterborne polyurethane(WPU) suspensions, CaCO3@TiO2 particles were modified by stearic acid. SEM tests of the fractured surfaces of the composites films showed that the CaCO3@TiO2particles were well embedded in the WPU matrix. And the mechanical properties, thermal stability and water resistance of the composites films were improved by the introduction of CaCO3@TiO2 particles.

Key words: Waterborne polyurethane, CaCO3@TiO2 particle, In situ polymerization