THEIC成炭剂在ABS复合材料中的运用

Application of THEIC Carbon-Forming Agent in ABS Composite

针对丙烯腈-丁二烯-笨乙缔共聚物(ABS)的易燃性,利用3-(2-羟乙基)异氰脲酸酯(THEIC)/硅包裹聚磷酸铵(Si-MCAPP)制备了新型膨账阻燃剂(IFR),提高了ABS树脂的阻燃性和热稳定性,并通过极限氧指数测试(LOI)、垂直燃烧(UL-94)测试、热重分析(TG)和锥形量热仪(CONE)等测试方法表征复合材料。研究结果表明,当IFR中THEIC与Si-MCAPP的质量比为1:2时,ABS复合材料的阻燃性最佳,L0I值达到29.7%,UL-94通过了V-1级,TG与CONE测试表明,相比于纯ABS,复合材料的残炭率从2.9%增加到24.3%,最大热释放速率(PHRR)从734.3kW/m^2降低到280.7kW/m^2,总热释放量(THR)从93.5MJ/m^2降低到43.5MJ/m^2,总烟释放量(TSP)降低了39.8%,燃烧形成的炭层更加致密和完整。

For the flammability of acrylonitrile-butadiene-styrene copolymer (A BS),prepared by tris-(2-hydroxyethyl) isocyanurate (THEIC)/silicon-coated ammonium ammonium phosphate (Si-MCAPP) new intumescent flame retardant (IF R) to improve the flame retardancy and thermal stability of ABS resins and passed the limit oxygen index test (LOI),vertical combustion (UL-94) test,thermogravimetric analysis (TG) and Cone test methods such as calorimeter (CONE) characterize composite materials.The results showed that when the mass ratio of THEIC to Si-MCAPP in IFR was 1 : 2,the flame retardancy of ABS composite was the best,the LOI value could reach 29.7%,UL-94 passed V-1,TG and CONE test showed that the carbon residue rate of the composite increased from 2.9% to 24.3% compared to pure ABS,and the maximum heat release rate (PHRR) decreased from 734.3 kW/m^2 to 280.7 kW/m^2,and total heat release (THR).From 93.5 MJ/m^2 to 43.5 MJ/m^2,the total smoke emission (TSP) was reduced by 39.8%,and the carbon layer formed after combustion was denser and more complete.