Facile Synthesis of a Novel Bio-Based P-N Containing Flame Retardant for Effectively Reducing the Fire Hazards of Epoxy Resin  

作　　者：Meixian Li Xin Hu Jie Yang Hongyu Yang Yao Yuan 

机构地区：[1]College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China [2]Fujian Provincial Key Laboratory of Functional Materials and Applications,School of Materials Science and Engineering,Xiamen University of Technology,Xiamen,361024,China [3]State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei,230026,China

出　　处：《Journal of Renewable Materials》2022年第10期2639-2654,共16页可再生材料杂志（英文）

基　　金：the financial supports from Fundamental Research Funds for the Central Universities(2020CDJQY-A006);the National Natural Science Foundation of China(No.51603025);The Opening Fund of State Key Laboratory of Fire Science(HZ2019-KF11).

摘　　要：In this work,a bio-based flame retardant(Cy-HEDP)was synthesized from cytosine and HEDP through a facile salt-forming reaction and embedded into epoxy matrix to improve the flame retardancy and smoke suppression performance.The product Cy-HEDP was well characterized by FTIR,^(1)H and^(31)P NMR and SEM tests.On the basis of the results,by adding 15 wt%Cy-HEDP,the EP15 can pass UL-94 V-0 rating,and the total smoke production(TSP)as well as total heat release(THR)can be decreased by 61.05%(from 22.61 to 8.7 m^(2)/m^(2))and 39.44%(from 103.19 to 62.50 MJ/m^(2))in comparison to the unfilled EP,reflecting the attenuated smoke toxicity and impeded heat generation.According to the analysis results of residual char,it can be concluded that Cy-HEDP possessed the ability to promote the formation of continuous and dense char layers,which would be a physical barrier to insulate oxygen and prevent heat feedback during the combustion of EP.This work provide inspiration towards developing bio-based flame retardant,probably extending the prospects to other polymeric material system.

关 键 词：Bio-based materials CYTOSINE smoke suppression flame retardant epoxy resin 

分 类 号：O62[理学—有机化学]