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将两种不同形态的粉体-粉状叶蜡石复合粉体(PPCP)和粒状叶蜡石复合粉体(GPCP)作为补强填料,部分取代N330分别填加到丁苯橡胶(SBR)/N330复合材料中。对两种形态的叶蜡石基复合粉体在SBR/N330纳米复合材料中的分散性能及对SBR/N330体系纳米复合材料的力学和硫化性能的影响进行了研究。结果表明,PPCP在SBR/N330复合材料中的分散效果较GPCP好。当PPCP或GPCP取代N330均为20%(质最分数)时,SBR/N330复合材料的拉伸强度和抗拉断伸长率前者较后者好。分析讨论了PPCP和GPCP在SBR/N330复合材料中的不同作用机理。
Two different forms of powder - powdery pyrophyllite powder (PPCP) and granular pyrophyllite powder (GPCP) were used as reinforcing fillers, and partially substituted for N330 were added to SBR / N330 composite materials. The dispersibility of two types of pyrophyllite-based composite powders in SBR / N330 nanocomposites and their influence on the mechanical and vulcanization properties of SBR / N330 nanocomposites were studied. The results show that PPCP dispersed in SBR / N330 composites better than GPCP. The tensile strength and tensile elongation at break of SBR / N330 composites were better than the latter when PPCP or GPCP replaced N330 by 20% (mass fraction). The different mechanism of action of PPCP and GPCP in SBR / N330 composites was analyzed and discussed.