Chinese Journal of Applied Chemistry ›› 2015, Vol. 32 ›› Issue (8): 916-921.DOI: 10.11944/j.issn.1000-0518.2015.08.140416

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Synthesis and Characterization of Novel High Impact Strength Epoxy Vinyl Ester Resin

JIN Chenga*(),WANG Erpinga,ZHU Yanhongb,JIANG Jiea,GU Lijunc   

  1. aNew United Group Company Limited, Changzhou, Jiangsu 213166, China
    bJiangsu Changhai Composite Materials Company Limited, Changzhou, Jiangsu 213102, China
    cKey Laboratory of Chemistry in Ethnic Medicinal Resources, State Ethnic Affairs Commission & Ministry of Education, Yunnan Minzu University, Kunming 650500, China
  • Received:2014-12-08 Accepted:2015-04-24 Published:2015-08-08 Online:2015-08-08
  • Contact: JIN Cheng
  • Supported by:
    Supported by the State Ethnic Affairs Commission Opening Fund of Key Laboratory of Ethnic Medicine Resource Chemistry(No;MJY090103)

Abstract:

With the introduction of flexible epoxy-terminated polyether(ETPE) as the monomer, herein, we reported a facile and efficient synthesis approach for novel epoxy vinyl ester resin(EVER-2) with high impact toughness. The resin was analyzed by Fourier-transform infrared(FTIR), 1H nuclear magnetic resonance(1H NMR) and 13C nuclear magnetic resonance(13C NMR) spectroscopy. Mechanical properties such as tensile strength, flexural strength, impact strength and heat distortion temperature were also determined for EVER-2. The cured resin containing 7.9% mass fraction of ETPE has outstanding performance on impact strength. SEM (scanning electron microscopy) analysis reveals that EVER-2 matrix displays a single-phase morphology and its galss fiber/EVER-2 composite(EVERL-2) exhibits better bonding between the matrix and glass fiber, which means that EVERL-2 can bear more impact strength than galss fiber/ EVER-1 composite(EVERL-1). Moreover, plausible toughening mechanisms of EVER-2 and EVERL-2 were proposed.

 

Key words: epoxy vinyl ester resin, epoxy-terminated polyether, impact strength, synthesis

CLC Number: