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Citation: JIANG Ai-Bing, CHENG Bo-Wen, REN Yuan-Lin. Synthesis and Application of Diethoxy-Acrylamide Methoxy Thiophosphate[J]. Chinese Journal of Applied Chemistry, ;2009, 26(2): 206-209. shu

Synthesis and Application of Diethoxy-Acrylamide Methoxy Thiophosphate

1.
Tianjin Key Laboratory of Fiber Modification and functional fibers, Tianjin Polytechnic University, Tianjin 300160

Corresponding author: CHENG Bo-Wen,
Received Date: 6 February 2008
Available Online: 17 April 2008
Fund Project: 中石化科技资金(205026) (205026)天津市科技发展计划(06TXTJJC14400)资助项目 (06TXTJJC14400)

A novel phosphorus,sulfur and nitrogen containing intumscent flame retardant(IFR),diethoxy-acrylamide methoxy thiophosphate(DAMT),was synthesized by reacting N-hydroxymethyl-acrylamide with diethoxythiophosphoryl chloride.DAMT was characterized by elemental analysis,FTIR,¹H NMR,and MS.The structure of DAMT was confirmed.The yield of DAMT was 80% when the molar ratio of acid capturing agent triethylamine to N-hydroxymethyl-acrylamide was 1:1,and the mass fraction of the catalyst CuCl was 1% of N-hydroxymethyl-acrylamide.The optimized reaction temperature ranged from 0 ℃ to 5 ℃.The limiting oxygen index(LOI) value reached 27% when the mass fraction of DAMT in the DAMT-acrylonitrile copolymer was 20%.The SEM micrographs of the char residue of the flame retarded copolymer revealed that the surface of the char residue was bubbly structured,and the cross section was honeycomb structure,indicating DAMT was a intumescent flame retardant.
- diethoxy-acrylamide methoxy thiophosphate,
- intumescent flame retardant,
- LOI,
- SEM
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