【作者】 赵蔚；

【导师】 吴友平；

【作者基本信息】 北京化工大学 ， 材料加工工程， 2006， 硕士

【摘要】 采用乳液共沉法制备的粘土／橡胶纳米复合材料具有许多优异的性能，如力学性能和气体阻隔性能等，具有工业化应用的潜力。本文以轮胎内胎、轮胎胎面和车辆空气弹簧为目标应用领域，对粘土／橡胶纳米复合材料进行了相应的研究。研究结果表明：1． 20份的粘土／丁苯橡胶纳米复合材料经三乙醇胺处理后，其力学性能和加工性能都可以达到工厂生产的非丁基内胎胶的要求，且其气密性要优于某工厂非丁基内胎胶。2． 少量的粘土(2-5份)可明显提高炭黑／丁苯橡胶复合材料的耐屈挠疲劳寿命；同时对材料的耐磨耗性能影响不大，材料的耐磨耗性能随炭黑用量的增加而有所提高。在相同的用量下，粘土／炭黑／SBR NC的静态力学性能和耐磨耗性能与白炭黑／炭黑／SBR NC相比基本相当，动态生热略有升高，这些结果可以为粘土在轮胎胎面胶中的应用提供参考。3． 粘土与炭黑并用可提高天然橡胶的耐老化性能，这一结果可以为粘土在车辆空气悬架用主要橡胶件胶料中的应用提供参考。聚合物纳米粒子因其具有纳米尺度、质轻、分散均匀、表面可化学键合(键合量也可控)且成本不高等特点，可以成为橡胶制品较理想的增强填料。本文研究了单分散交联PS纳米微球和α-Ms-AN纳米微球两种聚合物纳米填料对橡胶基体的增强效果，研究结果表明：与熔融共混法相比，乳液共沉法可以使α-Ms-AN纳米微球／橡胶纳米复合材料具有更好的综合性能；PS纳米微球交联剂的最佳为20％(占单体用量的质量百分比)，最佳填充量为30份；热处理温度和时间都会对α-Ms-AN纳米微球在橡胶中的分散以及与橡胶的界面作用产生影响，最终发现170℃下热辊剪切处理10分钟是最佳的热处理条件；作为模型填料，聚合物纳米粒子的粒径大小、组成及结构都会对聚合物纳米粒子／橡胶纳米复合材料的性能产生影响。更多还原

【Abstract】 Clay/rubber nanocomposites（NC） prepared by co-coagulating rubber latex and clay aqueous suspension based on pristine clay have good mechanical properties, excellent gas barrier properties and so on. Therefore, these materials can be applied in many rubber products, including inner tube, tire tread and main rubber component for automotive air suspension the potentiality of industrial applications. In this paper, we carried out some related application researches. The results were divided into the following parts: 1. clay/SBR NC reinforced by 20 phr clay and treated by triethanolamine had the same mechanical properties and processing properties as the inner tube materials in factory and the better gas barrier properties than inner tube products; 2. Due to incorporation of small amount （about 2-5 phr） of clay, the flex fatigue life of Carbon black/ SBR NC was dramatically increased and the abrasion resistance was decreased slightly. The mechanical and abrasion resistance of clay/CB/SBR NC were as the same as those of SiO₂/CB/SBR NC, but the heat built up of clay/CB/SBR NC was little higher than that of SiO₂/CB/SBR NC, all of these provided some informations to the application of clay in field of tire tread; 3. The combined use of clay and carbon black had improved the aging properties of carbon black/clay/natural rubber （NR） NC, which provided some informations to the application of clay in main rubber component for automotive air suspension.Nano-polymeric filler likely became the ideal filler for reinforcing elastomers, due to nano-size, low density, fine dispersion capability, surface activity to form strong interaction and low cost. In this paper, the reinforcing capabilities of two kinds of core-only polymeric fillers—PS and a-Ms—AN nano-filler were studeid in detail. The results indicated that a-Ms—AN/ SBR nanocomposites prepared by latex compounding method showed higher properties, relative to that prepared by melt compounding method; PS nano-filler/SBR NC had the best properties when the amount of crosslink reagent of PS nano-filler was 20%（weight percent of monomer amount） and更多还原