Journal of Radiation Research and Radiation Proces ›› 2016, Vol. 34 ›› Issue (6): 60301-60301.doi: 10.11889/j.1000-3436.2016.rrj.34.060301

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Effects of TAIC on halogen-free flame retardant EVA heat shrinkable materials via radiation cross-linking

GU Luyu1, LI Jianxi2, LIU Hu1, LI Wanxin1   

  1. 1. Shanghai Changyuan Electronics Materials Co., Ltd., Shanghai 201802, China;
    2. CGN DELTA(Jiangsu) Plastic & Chemical Co., Ltd., Suzhou 215400, China
  • Received:2016-08-29 Revised:2016-10-30 Online:2016-12-20 Published:2016-12-08


Ethylene-vinyl acetate copolymer (EVA) was blended with different contents of triallyl isocyanurate (TAIC) to prepare halogen-free flame retardant heat shrinkable material by the electron beam irradiation crosslinking. Effects of TAIC content and absorbed dose on gel content, mechanical properties, and electrical properties of samples were studied. And the EVA heat shrinkable materials were characterized by the Fourier transform infrared (FTIR) spectroscopy. The results showed that the gel content of EVA heat shrinkable material increased with the TAIC content in the case of absorbed dose remaining unchanged, e.g. 150 kGy, and the gel content increased with the absorbed dose while adding certain TAIC, e.g. 3 phr (parts per hundred as for mass), which indicated that TAIC could promote the role of irradiation crosslinking. The elongation at break decreased with the icreasing TAIC contents and the increasing absorbed doses. However, the tensile strength of the samples increased with the TAIC content. Test results of volume resistance showed that with TAIC contents increasing, volume resistance of EVA heat shrinkable materials increased at first, and then decreased with the increasing absorbed doses. The FTIR analysis showed that the TAIC reaction was complete under the electron beam irradiation.

Key words: Ethylene vinyl acetate copolymer (EVA), Triallyl isocyanurate (TAIC), Irradiation crosslinking, Electrical properties, Infrared analysis

CLC Number: 

  • TL13