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Citation: TANG An-Bin, HUANG Jie, SHAO Ya-Ting, LIU Feng. Synthesis of Hexaphenoxycyclotriphosphazene and Its Application in Laminate[J]. Chinese Journal of Applied Chemistry, ;2010, 27(4): 404-408. doi: 10.3724/SP.J.1095.2010.90390 shu

Synthesis of Hexaphenoxycyclotriphosphazene and Its Application in Laminate

Sichuan EM Technology Co., Ltd. National Insulating Material Engineering Research Center, Mianyang 621000

Received Date: 9 June 2009
Revised Date: 16 August 2009

Hexaphenoxycyclotriphosphazene(HPCTP)was synthesized by the reaction of crude hexachloro-cyclotriphosphazene(HCCTP) with phenol and sodium hydroxide,with tetrabutylammonium chloride(TBAC) as phase transfer catalyst and chlorobenzene/water as solvent.Effects of reaction temperature,reaction time,solvent and molar ratio of raw matesials on the yield of HPCTP were investigated.Under the optimized reaction conditions of n(sodium hydroxide):n(phenol):n(TBAC):n(crude HCCTP)=7.5:6.3:0.15:1,reaction time of 4 h at 30℃ plus 6 h at reflux temperature,the yield was 75%.The product was characterized by FTIR,¹H NMR,¹³C NMR,³¹P NMR,XRD,DSC and TGA.The product has been firstly applied in benzoxazine resin glass cloth laminate.The flammability class of the laminate was in the rank of V-0,the breakdown voltage of the laminate was 47 kV,and the thermal state flexural strength of the laminate was 596 MPa when the mass fraction of HPCTP in the laminate was 10%.
- hexaphenoxycyclotriphosphazene,
- flame retardant,
- laminate,
- synthesis,
- application
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