Journal of Radiation Research and Radiation Proces ›› 2015, Vol. 33 ›› Issue (6): 60302-060302.doi: 10.11889/j.1000-3436.2015.rrj.33.060302

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Synthesis and properties of flame retardant phosphorus-containing cycloaliphatic epoxy resin

HAN Dandan  JIA Xiaoqin  LI Yongjie  WANG Tao   

  1. (Department of Organic Chemistry, College of Science, Beijing University of Chemical Technology, Beijing 100029, China )
  • Received:2015-09-02 Revised:2015-10-29 Online:2015-12-20 Published:2015-12-07
  • Contact: Ph.D. WANG Tao, Professor E-mail:wangtwj2000@163.com
  • About author:HAN Dandan, female, was born in August 1990, gained the doctor degree in Beijing Chemical University in 2013, mainly engaged in applied chemistry,E-mail: 13269187269@163.com

Abstract:

UV-curable phosphorus-containing epoxy resin was synthesized with chain-extension of (3,4-epoxycyclohexyl)methyl-3,4-epoxycyclohexanecarboxylate (ERL4221) and 2-(6-oxido-6H-dibenz(c,e) (1,2)- oxaphosphorin-6-yl)-1,4-benzenediol (DOPO-HQ) at different stoichiometric ratios. The structures of these resins were characterized by IR and 1H-NMR. The influences of different phosphorus contents on the epoxy value of the epoxy resin, thermal properties, flame retardancy, and UV curing properties were investigated. The results showed that the thermal stability and flame resistance increased compared with those of the unmodified ERL4221 epoxy resin under the same conditions. When the phosphorus mass content was 1.5%, the limiting oxygen index (LOI) reached 24.9, vertical burning achieved V-1 levels, and had a higher light curing activity.

Key words: UV curing, Phosphorus-containing epoxy resin, Synthesis, Thermal stability, Flame retardant

CLC Number: 

  • TL13