Chemical Research in Chinese Universities ›› 2009, Vol. 25 ›› Issue (5): 760-766.

• Articles • Previous Articles     Next Articles

Effect of C-Tetramethyl Calix[4]resorcinarene Acrylate on Curing Behavior and Film Properties of Thiol-acrylate Coating System

FU Qi and SHI Wen-fang*   

  1. Joint Laboratory of Polymer Thin Films and Solution, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei 230026, P. R. China
  • Received:2008-08-25 Revised:2008-10-19 Online:2009-09-25 Published:2009-12-07
  • Contact: SHI Wen-fang. E-mail: wfshi@ustc.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.50233030) and Granted by China NKBRSF Project (No.2001CB409600).

Abstract:

An octa-functional acrylate of C-tetramethyl calix[4]resorcinarene(CMC-4-RA) was facilely synthesized and characterized with 1H NMR, 13C NMR and FTIR spectroscopy. The CMC-4-RA was added to a thiol-acrylate system with different mass ratios, and exposed to a middle pressure mercury lamp. The maximum photopolymerization rate and final vinyl group conversion in the cured film increased greatly along with CMC-4-RA addition that was monitored with Photo-DSC. The tensile strength and pendulum hardness were improved significantly after the addition of CMC-4-RA. With increasing the content of CMC-4-RA to 60%(mass fraction), the glass transition  temperature increased from 34.2 °C to 84.1 °C; the cross-link density was calculated to be increased from 23.83 mmol/cm3 to 82.40 mmol/cm3 according to dynamic mechanical thermal analysis; the thermostability was greatly improved.

Key words: Calix[4]resorcinarene; Acrylate; UV curing; Film