新型磷系阻燃剂四苯基双酚A二磷酸酯阻燃ABS的应用研究

利用自制的四苯基双酚A二磷酸酯(BDP)及其复配体系制备了阻燃ABS,研究了阻燃ABS的物理机械性能、氧指数(LOI)和垂直燃烧测试性能(UL94)、材料的阻燃性能和烟气释放。试验结果显示:酚醛树脂(NP)的加入可提高BDP阻燃体系的成炭效果,采用BDP/NP=20%/5%的体系阻燃ABS,材料的冲击性能下降了12.00%,LOI达到29.50%,UL94阻燃性能达到V-0级,av-HRR和pkHRR分别下降了46.40%和40.45%,TTI延长30 s,FGI下降了50.75%,6 min内的SEA上升了31.30%,600℃时成炭率为7.19%;采用BDP/NP/APP=20%/5%/5%时,材料的冲击性能降幅为36.00%,LOI最大可达30.10%,UL94阻燃性能为V-0级,av-HRR和pkHRR最大分别下降50.11%和55.58%,TTI延长35 s,FGI最大降幅为64.32%,6 min内的SEA升幅为20.52%,600℃时成炭率为11.15%;采用BDP/NP/纳米SiO2=20%/5%/7%时,材料的冲击性能上升了20.00%,LOI达到31.20%,UL94阻燃性能达到V-0级,av-HRR和pkHRR分别下降了49.45%和58.09%,TTI延长45 s,FGI降幅为68.34%,6 min内av-SEA升幅为13.00%,600℃时成炭率为16.37%,阻燃ABS的综合性能最好。

Applied study on pyrolysis of bisphenol A diphosphate flame-retarded ABS

Physical performances,the limiting oxygen index(LOI),vertical combustion performances(UL94),flame retardant performances,smoke release of bisphenol A diphosphate(BDP),BDP/APP and BDP/SiO2 added in ABS are studied.The experimental results showed that BDP added in phenolic resin(NP) can increase char quality.As BDP/NP= 20 %/5 % was added in ABS,the maximum reduction parameter of physical performances is impact strength,which was reduced by 12.00 %,and the ABS resins passed the UL94V-0 test,LOI reached 29.50 %...