Journal of Radiation Research and Radiation Proces ›› 2014, Vol. 32 ›› Issue (6): 6-060302.doi: 10.11889/j.1000-3436.2014.rrj.32.060302

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Preparation of the permanent anti-UV-aging ethylene-vinyl acetate copolymer

LI Jianxi  ZHANG Cong  CHEN Tao  LI Linfan  LI Jingye   

  1. (Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China)
  • Received:2014-09-03 Revised:2014-10-24 Online:2014-12-20 Published:2014-11-17

Abstract:

4-Allyloxy-2-hydroxybenzophenone(AHB), the grafting type ultraviolet absorber was blended with EVA by melting extrusion. After mixing, the composites were hot-pressed to sheets with a thickness of 1 mm. And then the sheets were irradiated by electron-beam for 100 kGy at dose rate 4.4 × 105 kGy•h−1. This study focuses on AHB effects on the mechanical properties according to GB/T 1040-2006, and resistance to ultraviolet aging properties of the cable material by FT-IR and UV. The results showed that the breaking elongation of the material increased from 586% to 772%, while the tensile strength decreased simultaneously, from 32.1 MPa to 22.4 MPa, with the raising of AHB content from 0% to 2%. The performance of EVA with 1 phr ultraviolet absorber is significantly superior to the pristine on the mechanical properties under UV- irradiation at different times.

Key words: Ethylene-vinyl acetate copolymer, 4-Allyloxy-2-hydroxybenzophenone, Ultraviolet absorption, Solid phase graft, Electron beam radiation

CLC Number: 

  • TL13