EPDM/PP TPV阻燃性能的研究

Study on flame retardance of EPDM/PP TPV

采用氢氧化镁为主阻燃剂,配合使用十溴二苯乙烷(DBDPE)、三氧化二锑和配合剂A(一种有机硅高分子材料),研究四者对EPDM/PP热塑性硫化胶(EPDM/PPTPV)性能的影响。结果表明,加入氢氧化镁会降低EPDM/PPTPV的物理性能,配合使用DBDPE和三氧化二锑时,EPDM/PP TPV的阻燃性能增幅较大、物理性能变化不大,对EPDM/PPTPV的流变性能影响较小;加入配合剂A,EPDM/PP TPV的氧指数大幅提高,物理性能降低,流变性能得到改善。EPDM/PP TPV的最佳阻燃配方为:EPDM/PP TPV100,氢氧化镁50,DBDPE20,三氧化二锑7,配合剂A5。

The effect of the primary flame retardant magnesium hydroxide [Mg （OH） 2 ] combined with decabromo diphenylethane（DBDPE）/antimonous oxide（Sb2O3 ）/ingredient A —— a polymerized organo-silicone on the properties of EPDM/PP TPV was investigated. The results showed that the physical properties of EPDM/PP TPV would decrease by adding Mg（OH）2;the flame retardanee of EPDM/PP TPV improved significantly by using Mg（OH）2 combined with DBDPE and Sb2O3 ,and the physical properties and rheological properties changed little; and the oxidative index of EPDM/PP TPV increased remarkably and the rheological properties improved by adding ingredient A, but the physical properties decreased. The optimized flame-retardant formula of EPDM/PP TPV was as follows：EPDM/PPTPV 100,Mg（OH）2 50,DBDPE 20,Sb2O3 7,ingredient A 5.