钢渣超微粉/橡胶复合材料的性能及补强-阻燃机制

以磁选热闷渣、未磁选热闷渣、电炉渣和风淬渣作为研究对象,以乙二醇、三乙醇胺和无水乙醇制备钢渣助磨剂,钢渣助磨剂与钢渣进行复合获得钢渣超微粉。将钢渣超微粉与炭黑N220、促进剂、硫磺、 ZnO、硬脂酸、天然橡胶进行复合,制备钢渣超微粉/橡胶复合材料。研究钢渣种类和钢渣助磨剂用量对钢渣超微粉/橡胶复合材料力学性能和阻燃性能的影响。利用XRF、 XRD、 LPSA和FTIR对化学成分、矿物组成、粒度分布和组成结构进行测试。结果表明,以电炉渣制备的钢渣超微粉/橡胶复合材料的力学性能最佳,以磁选热闷渣或未磁选热闷渣制备的钢渣超微粉/橡胶复合材料的阻燃性能最佳。钢渣助磨剂可以减小钢渣超微粉的粒度尺寸,改善钢渣超微粉的粒度分布均匀程度。随着钢渣助磨剂用量的增加,钢渣超微粉的粒度分布均匀程度改善,钢渣超微粉/橡胶复合材料的力学性能提高,阻燃性能降低。

Properties and reinforcement-flame retardant mechanism of steel slag ultrafine powder/rubber composites

With the magnetized hot braised slag or unmagnetized hot braised slag, electric furnace slag and wind quenching slag as the research object, ethylene glycol, triethanolamine and absolute ethyl alcohol were used to prepare steel slag grinding aid. The steel slag ultrafine powders were obtained by mixing steel slag grinding aid and steel slag. The steel slag ultrafine powder/rubber composites were prepared by the steel slag ultrafine powder, carbon black N220, accelerant, sulfur, ZnO, stearic acid and the natural rubber. The influences of types of the steel slag and amount of steel slag grinding aid on the mechanical properties and flame retardant properties of the steel slag ultrafine powder/rubber composites were studied. The chemical composition, mineral composition, particle size distribution and composition structure were tested by XRF, XRD, LPSA and FTIR, respectively. The results show that the steel slag ultrafine powder/rubber composites prepared with electric furnace slag have good mechanical properties, the steel slag ultrafine powder/rubber composites prepared with electric furnace slag magnetized hot braised slag or unmagnetized hot braised slag have good flame retardant properties. The particle size of the steel slag ultrafine powder is reduced and the particle size distribution uniformity of the steel slag ultrafine powder is improved by steel slag grinding aid. With the increase of the amount of steel slag grinding aid, the particle size distribution uniformity of the steel slag ultrafine powder is improved, the mechanical properties of the steel slag ultrafine powder/rubber composites are improved and the flame retardant properties are reduced.