【摘要】 将石材加工过程中产生的废弃大理石粉碎,采用硬脂酸偶联剂对大理石粉进行改性。将改性后大理石粉混炼到NR中制备复合材料,通过不同测试手段研究材料的性能变化。结果表明,球磨后大理石粉的平均粒径为24.18μm。采用硬脂酸改性后大理石粉添加量为10%时性能最佳,拉伸强度达到20.11MPa。与大理石/NR及纯橡胶材料相比,改性后大理石粉/NR复合材料的耐热性能明显提高。活化后大理石粉作为橡胶填料,可替代炭黑降低橡胶制品生产成本,同时有利于环保。更多还原

【Abstract】 Marble powder was modified by stearic acid coupling agent after marble scraps were grinded.Natural rubber/marble powder composites were prepared by direct blending technology.The results showed that the average particle size of marble powder was 24.18μm.The best mechanical properties of composites were obtained after modified marble powder content were 10 percent in the natural rubber,and the tensile strength was 20.11 Mpa.The heat resistance of composites was higher than unmodified marble powder/NR composites.Activated marble powder has excellent reinforcement effect and ideal processing characteristics,and can replace carbon black in rubber to achieve its application.更多还原