煤泥在我国资源丰富,主要由细粒煤和铝硅酸盐黏土矿物组成,是一种富碳和富硅的原材料,但其利用率极低。以煤泥为原料,通过焙烧处理将煤颗粒转化成煤基炭材料,然后采用化学沉淀法将硅酸盐矿物转化成纳米白炭黑,原位包覆在煤基炭材料表面,经表面改性后制备了煤基炭-白炭黑双相复合填料(CSDPF)。该CSDPF中SiO2的含量为32.80%,SiO2与煤基碳的比值为51.69%。煤基炭颗粒表面彻底被白炭黑粒子所覆盖,其表面接触角达到91°,疏水性较好,与聚合物具有较好的亲和性。CSDPF显著地改善了丁苯橡胶复合材料的力学性能,可全部替代N660炭黑,部分替代其他炭黑在橡胶中的应用,是一种综合性能优良的复合型橡胶补强材料。
The coal slime is very rich in China,mainly composed of fine coal and aluminosilicate clay minerals.The coal slime is a kind of carbon-rich and silicon-rich raw material,but its utilization ratio is very low.The coal particles in the coal slime were transformed into coal based carbon materials by calcination,and silicate minerals were converted into nano silica by chemical precipitation method.Then the silica particles coated on the surface of coal based carbon materials in situ.The coal based carbon-silica dual phase composite filler (CSDPF) was prepared by surface modification.The content of SiO2 in CSDPF was 32.80%,and the ratio of silica to coal-based carbon was 51.69%.The surface of the coal based carbon particle was completely covered by the silica particle.The surface contact angle of the CSDPF powder reached 91° and the hydrophobicity was fine.CSDPF had good affinity with polymer.CSDPF significantly improved the mechanical properties of styrene-butadiene rubber (SBR) composites.CSDPF can replace N660 carbon black and partly replace other carbon black in rubber application,which was a kind of compound rubber reinforcing material with good comprehensive properties.
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基金资助
国家自然科学基金(51104060);河南省高等学校青年骨干教师资助计划项目(2014GGJS-040);河南理工大学“太行学者”发展计划项目(672103/002/037);河南省科技厅科技攻关项目(162102210225)
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