共查询到20条相似文献,搜索用时 109 毫秒
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介绍了天然植物纤维(NVF)的种类和性质;概述了NVF与聚丙烯(PP)基体材料相容性的改性方法,主要包括物理改性和化学改性;综述了近年来国内外关于NVF增强PP基复合材料性能的研究进展;展望了PP/NVF复合材料的研究方向 相似文献
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天然植物纤维的结构和性能独特,与树脂基体复合仍存在诸多问题。天然植物纤维改性对于提高反应活性、改善其与基体树脂的界面相容性及复合材料的综合性能有重要影响。从天然植物纤维原料的组成、结构及性能分析出发,重点介绍了蒸汽爆破预处理、热预处理、高能辐射预处理、碱预处理、过氧化物预处理和组合法预处理等预处理技术以及酯化改性、接枝共聚、偶联剂改性和其他改性方法,并综述了改性天然植物纤维在复合材料中的研究进展,总结了天然植物纤维改性对复合材料性能的影响,以期为天然植物纤维复合材料的研究提供思路和参考。 相似文献
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《Journal of the European Ceramic Society》2023,43(15):6699-6717
With the advantage of high temperature resistance, low expansion, low density and excellent thermal stability, carbon fiber reinforced ceramic composites have a very wide range of applications in aerospace, military, energy, chemical industries and transportation. Short carbon fiber reinforced ceramic composites are characterized by simple processes, low manufacturing costs, short preparation times and automated production, can be used in fields such as friction materials and thermal protection system. This paper reviews the current status and recent advances in research on homogenization techniques, mechanical properties, thermal properties and frictional properties of short carbon fiber reinforce ceramic composites. Different processing routes for short carbon fiber reinforced ceramic composites, including reactive melt infiltration (RMI), hot pressing (HP), spark plasma sintering (SPS) and pressureless sintering, the advantages and drawbacks of each method are briefly discussed. The future development direction of low-cost manufacturing short carbon fiber reinforced ceramic composites is prospected. 相似文献
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Xuan Liu 《Journal of Adhesion Science and Technology》2013,27(15):1723-1734
In this research, 9 series of ramie fibers were treated under low-temperature plasma with diverse output powers and treatment times. By analysis of the surface energy and adhesion power with epoxy resin, 3 groups as well as control group were chosen as reinforced fibers of composites. The influences of these parameters on the ramie fiber and its composites such as topography and mechanical properties were tested by scanning electron microscopy (SEM), atomic force microscopy (AFM), tensile property and fragmentation test of single-fiber composites. Contact angle and surface free energy results indicated that with the increased treatment times and output powers, surface energy and adhesion work with epoxy resin improved. Compared with the untreated fibers, surface energy and adhesion work with epoxy resin grew 124.5 and 59.1% after 3 min-200 w treatment. SEM and AFM showed low temperature plasma treatment etched the surface of ramie fiber to enhance the coherence between fiber and resin, consequently fiber was not easy to pull-out. After 3 min-200 w treatment, tensile strength of ramie fiber was 253.8 MPa, it had about 30.5% more than that of untreated fiber reinforced composite. Interface shear stress was complicated which was affected by properties of fiber, resin and interface. Fragmentation test showed biggest interface shear stress achieved 17.2 MPa, which represented a 54.0% increase over untreated fiber reinforced composites. 相似文献
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长纤维增强热塑性复合材料的开发与应用 总被引:2,自引:0,他引:2
长纤维增强热塑性复合材料以其优异的性能成为高分子复合材料研发与应用的热点。笔者综述了长纤维增强热塑性复合材料的性能特征、研发历史与现状、产品形式与制造技术、应用状况,展望了长纤维增强热塑性复合材料的发展前景。 相似文献
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碳纤维增强树脂基复合材料以其优异的综合性能成为当今世界材料学科研究的重点。本文介绍了的碳纤维增强复合材料的性能,简述了增强机理、成型工艺及其应用领域和发展趋势。 相似文献
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碳纤维增强SiC陶瓷复合材料的研究进展 总被引:7,自引:0,他引:7
碳纤维增强SiC陶瓷基复合材料具有良好的高温力学性能,是航空航天和能源等领域新的高温结构材料研究的热点之一.本文回顾了增强体碳纤维的发展,对材料的成型制备工艺,材料的抗氧化涂层研究进展和现有的一些应用做了综述,并展望了碳纤维增强SiC陶瓷基复合材料以后的研究重点及发展前景. 相似文献
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《Polymer-Plastics Technology and Engineering》2013,52(3):435-451
Wood polypropylene composites (WPC) of different compositions (30, 40, and 50%) have been prepared using maleic anhydride–polypropylene copolymer of different percentage (5 and 10% relative to their wood fiber content). Tensile, flexural, fracture toughness, and impact test of the prepared WPC were carried out. From the results, it is observed that the hard wood fiber–polypropylene composites, by using maleated polypropylene (MAH-PP), show comparatively better performance to soft wood fiber–polypropylene composites. Tensile strength and charpy impact strength have been increased to a maximum of 50 and 20%, respectively. The damping index has been decreased by 60% when 10% of MAH-PP has been used. Water absorption and scanning electron microscopy of the composites are also investigated. 相似文献
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连续纤维增强热塑性树脂基复合材料拉挤工艺研究与应用现状 总被引:7,自引:0,他引:7
拉挤工艺是一种能够经济的连续生产复合材料的典型制造工艺,它不但具有其它成型方法的优点,而且还具有其它工艺所不具备的优点,如生产效率高,重复性好,长度可任意切断,省原料、省能耗等。本文简要介绍了连续纤维增强热塑性树脂基复合材料拉挤工艺研究与应用的现状,包括目前国内外主要的拉挤工艺,以及拉挤工艺过程的若干工序。 相似文献
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炭纤维增强水泥基复合材料(CFRC)的电磁性能 总被引:1,自引:0,他引:1
炭纤维增强水泥基复合材料(Carbon Fiber Reinforced Cement Composites,CFRC)是新发展起来的一种电磁屏蔽材料,它是防止电磁污染的防护性功能材料之一。本文阐述了炭纤维增强水泥基复合材料的制备成型工艺;分析了炭纤维掺入量和长度、水灰比和密实成型制备工艺、炭纤维分散性、养护龄期、外加剂、炭纤维表面化学气相沉积(CVD)处理等因素对CFRC力学性能、导电性能、压敏性能及电磁性能的影响。合适的炭纤维掺入量和长度、炭纤维的均匀分散、合理的水灰比和炭纤维表面处理是影响CFRC导电性能和电磁性能的主要因素。CFRC对电磁波的屏蔽效果除利用屏蔽效能从反射电磁波角度衡量外,亦可从吸收电磁波角度利用反射率进行评价。 相似文献