阻燃剂对UP复合材料流变性及磨损性能的影响

制备了含有氢氧化铝(ATH)、三聚氰胺多聚磷酸盐(MPP)及十溴二苯醚(DBDE)等不同阻燃剂的干式不饱和聚酯/玻璃纤维(UP/GF)共混复合材料。研究了不同阻燃剂对UP/GF复合材料的阻燃性能、流动性和磨损性能的影响,并借助SEM观察了采用不同阻燃剂的UP/GF复合材料的磨损面微观形貌。结果表明,ATH的添加质量为30%时,其UP/GF复合材料的阻燃性与DBDE添加量为25%的体系相当,达到UL94 V-0级,OLI值为30.0且具有很好的抑烟和防滴落效果;同时ATH、MPP的加入可适当提高复合材料流动性能,ATH还可以改善复合材料的磨损性能,磨损体积为未添加阻燃剂体系的50%左右。

Effects of different flame retardants on the rheological and tribological properties of UP composites

The dry-type composites of glass fiber(GF) reinforced unsaturated polyester(UP) with different flame retardents aluminum hydroxide(ATH),melamine polyphosphate(MPP)and decabromodiphenyl oxide(DBDE) were prepared.The effects of different flame retardants on the fire resistance,rheological and tribological properties of UP/GF composites were investigated.Worn surface morphologies of the composites was analyzed by the scanning electron microscopy(SEM).The results showed that the flame retardancy of the UP composites with 30% ATH was equal to that of the system with 25% DBDE and reached the UL-94V-0 level.The limiting oxygen index(OLI)value of the system was 30.0 and the ATH had good smoke-inhibition and antidrip property.The rheological property of the composite was improved by adding ATH and MPP.The tribological property of the composite with ATH was also impoved and the worn volume of the composites was 50% of that system without ATH.