共查询到19条相似文献,搜索用时 125 毫秒
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介绍石墨烯/橡胶复合材料的制备方法及应用研究进展,并对未来石墨烯/橡胶复合材料的发展提出了建议。石墨烯/橡胶复合材料的制备方法主要包括机械填加法、溶液复合法、乳液共混法、熔融混合法以及多种方法联用。与未添加石墨烯或填充炭黑的胶料相比,石墨烯/橡胶复合材料的导电性能、导热性能、物理性能和液体/气体阻隔性能等明显提高,具有综合性能优势。未来石墨烯/橡胶复合材料的研发工作重点为创新复合材料制备方法,提高复合材料制备的经济性和环保性,加大基础研究与应用基础研究力度,实现产学研用对接,加快科研成果转化。 相似文献
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综述了氧化石墨烯(GO)优异的性能,以及改性GO作为补强填料在橡胶复合材料中的应用。介绍了GO的离子液体改性、无机粒子改性、有机小分子改性和非共价键改性以及其对橡胶复合材料的力学性能、耐摩擦性能、阻隔性能和导热性能的影响。同时指出了未来氧化石墨烯/橡胶纳米复合材料的发展趋势。 相似文献
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系统介绍了多种石墨烯的制备、改性和复合方法,制备方法主要有机械剥离和湿法剥离,改性方法主要有非共价改性和共价改性,复合方法主要有非原位合成和原位合成。从石墨烯在固体推进剂中应用的角度分析比较了不同制备方法的优缺点,指出今后用作燃烧催化剂的石墨烯及其复合材料的制备技术重点应集中在如下几方面:(1)将微乳液法等纳米材料制备方法应用于石墨烯复合材料制备中;(2)应加强负载有机金属盐和含能催化剂的石墨烯负载型燃烧催化剂的研究;(3)开展石墨烯负载物的晶体生长研究。附参考文献57篇。 相似文献
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The extensively used latex mixing approach to prepare graphene can improve the graphene dispersion but meets some challenges in the preparation of high content carbon black filled rubber system like a rubber tire. Owing to the high melt viscosity of the rubber/graphene masterbatch, the dispersion of carbon black is not perfect during twin-roll mixing and some aggregates will be formed. Here we proposed a wet compounding process, combined with ultrasonically assisted latex mixing, named as the WCL method to prepare reduced graphene oxide/carbon black/natural rubber (rGO/CB/NR) composites. The morphological observations confirmed that both graphene and carbon black can be evenly dispersed in the rubber composites. The incorporation of rGO also improves the hardness, thermal conductivity and anti-aging properties of the composites. The rGO/CB/NR composites prepared by the WCL method possess better mechanical properties compared to conventional latex mixing. The entanglement-bound rubber tube model was utilised to understand the reinforcing mechanism. 相似文献
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Functionalized graphene‐reinforced rubber composite: Mechanical and tribological behavior study 下载免费PDF全文
A functionalized graphene, fluorinated graphene nanosheets (FGS), and SiO2 nanoparticles as reinforcing fillers were employed to improve the mechanical properties of the solution styrene butadiene and butadiene rubber composites (SSBR‐BR). The results showed that the mechanical properties of SSBR‐BR composite filled with FGS were substantially improved than those of the unfilled and equivalent filler loaded graphene oxide (GO) and reduced graphene oxide (rGO) filled SSBR‐BR composites. It can be ascribed to the fact that the hydrophobic surface of FGS can be endowed the good dispersion in rubber matrix and stronger interfacial interaction between rubber and fillers. The tribological properties of these composites are also investigated. The results reveal that incorporation of GO, rGO, and FGS in SSBR‐BR composites can decrease antiwear properties because the existence of layered graphene promotes to tear and peel off. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017 , 134, 44970. 相似文献
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In this study, nanosheets including graphene oxide (GO) and reduced graphene oxide (rGO), were incorporated into natural rubber (NR), to study the effects of substituting GO or rGO for carbon black (CB) on the structure and performance of NR/CB composites. The morphological observations revealed the dispersion of CB was improved by partially substituting nanosheets for CB. The improvements in static and dynamic mechanical properties were achieved at small substitution content of GO or rGO nanosheets. With substitution of rGO nanosheets, significant improvement in flex cracking resistance was achieved. NR/CB/rGO (NRG) composites has a much lower heat build‐up value compared with NR/CB/GO (NG) composites at a high load of nanosheets. However, both GO and rGO tended to aggregate at a high concentration, which led to the poor efficiency on enhancing the dynamic properties, or even deteriorate the performance of rubber composites. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132, 41832. 相似文献
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石墨烯由于其独特的结构,具有高电导率、高模量、高强度、高热导率以及大比表面积,作为补强材料在合成橡胶工业中应用广泛。介绍石墨烯单独使用或与其他补强材料并用增强丁腈橡胶、丁苯橡胶、丁基橡胶、乙丙橡胶以及氯丁橡胶等的应用研究进展,指出今后应进一步探索石墨烯的改性方法,提高石墨烯在橡胶基体中的分散性,探讨石墨烯与其他助剂的协同作用机理,促进石墨烯在合成橡胶领域的实际应用。 相似文献