共查询到18条相似文献,搜索用时 156 毫秒
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材料合成新技术──自蔓延高温合成 总被引:3,自引:0,他引:3
自蔓延高温合成(SHS)是目前被广泛开发用于工业陶瓷和其它先进材料制备的一种独特的先进工艺技术。本文对生产高科技材料的自蔓延高温合成技术方法进行了介绍,并分析了该工艺的特点及其理论基础,同时还讨论了影响材料合成的因素。 相似文献
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综述了水热反应机理、影响水热反应的主要因素及水热法制备无机粉体材料的研究新进展,并对水热法在无机粉体材料制备中的发展前景进行了展望。 相似文献
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电化学控制离子分离(electrochemically controlled ion separation,ECIS)是一种环境友好的新型膜分离技术,通过电化学方法调节附着在导电基体上的离子交换膜的氧化还原电位来控制离子的置入与释放,从而使溶液中的金属离子得到分离并使膜得到再生。铁氰化镍(NiHCF)是一种结构类似分子筛的无机配位化合物,由于其对碱金属离子的选择性(Cs^+〉Rb^+〉K^+〉Na^+〉Li^+)不同可用于分离混合溶液中的碱金属离子,成为电控离子分离膜的首选材料。就ECIS过程机理、NiHCF薄膜的制备-结构-性能关系进行了总结并提出了一些新的研究方向。 相似文献
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本文主要介绍并分析了电结晶法制备羟基磷灰石(HA)涂层的工艺过程,发现电结晶法实际上是电化学沉积和水热合成法在工艺上的巧妙组合。 相似文献
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Masahiro Yoshimura Kyoo-Seung Han Wojciech Suchanek 《Bulletin of Materials Science》1999,22(3):193-199
A process called ‘soft solution processing’ has been introduced to fabricate advanced solid state materials in an economical,
environmental friendly, and energy and material efficient way. A concise discussion of how to improve the synthetic conditions
and how to extend the applied system is given. The successful examples show that soft solution processing is capable of preparing
advanced materials with planned properties through the easy control of reaction conditions in a suitable aqueous solution
in a single synthetic step without huge energy consumption for sintering or melting and without any sophisticated equipment. 相似文献
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Hydrothermal processing of materials: past,present and future 总被引:1,自引:0,他引:1
The hydrothermal technique provides an excellent possibility for processing of advanced materials whether it is bulk single
crystals, or fine particles, or nanoparticles. The advantages of hydrothermal technology have been discussed in comparison
with the conventional methods of materials processing. The current trends in hydrothermal materials processing has been described
in relation to the concept of soft solution processing, as a single-step low energy consuming fabrication technique. Also
some recent developments in multi-energy processing of materials such as microwave-hydrothermal, mechanochemical-hydrothermal,
electrochemical-hydrothermal, sonar-hydrothermal, etc. have been discussed. An overview of the past, present and future perspective
of hydrothermal technology as a tool to fabricate advanced materials has been given with appropriate examples. 相似文献
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This work focused on the preparation of poly (vinyl alcohol) (PVA)/inorganic composites. Perlite and organically modified
montmorillonite (OMMT) were used as the inorganic compounds. (PVA)/inorganic nanocomposite films were prepared by solvent
solution method. The morphology, dynamic mechanical property, and the photochemical stability of these films were studied.
The reaction pathway between these OMMT and PVA was suggested that the hydrogen bonding and hydrophobic interactions contributed
to the preparation. The obtained new materials have different thermal, mechanical, and photochemical stability from other
single components. 相似文献
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Lionel Nicole Laurence Rozes Clément Sanchez 《Advanced materials (Deerfield Beach, Fla.)》2010,22(29):3208-3214
Achieving nanostructured or hierarchical hybrid architectures involves cross‐cutting synthetic strategies where all facettes of chemistry (organic, polymers, solid‐state, physical, materials chemistries, biochemistry, etc…?), soft matter and ingenious processing are synergistically coupled. These cross‐cutting approaches are in the vein of bio‐inspired synthesis strategies where the integration of different areas of expertise allows the development of complex systems of various shapes with perfect mastery at different size scales, composition, porosity, functionality, and morphology. These strategies coined “Integrative Chemistry” open a land of opportunities to create advanced hybrid materials with organic‐inorganic or bio‐inorganic character. These hybrid materials represent not only a new field of basic research where creative chemists can express themselves, but also, via their remarkable new properties and multifunctional nature, hybrids are allowing the emergence of innovative industrial applications in extremely diverse fields. 相似文献
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Boissiere C Grosso D Chaumonnot A Nicole L Sanchez C 《Advanced materials (Deerfield Beach, Fla.)》2011,23(5):599-623
The major advances in the field of the designed construction of hierarchically structured porous inorganic or hybrid materials wherein multiscale texturation is obtained via the combination of aerosol or spray processing with sol-gel chemistry, self-assembly and multiple templating are the topic of this review. The available materials span a very large set of structures and chemical compositions (silicates, aluminates, transition metal oxides, nanocomposites including metallic or chalcogenides nanoparticles, hybrid organic-inorganic, biohybrids). The resulting materials are manifested as powders or smart coatings via aerosol-directed writing combine the intrinsic physical and chemical properties of the inorganic or hybrid matrices with defined multiscale porous networks having a tunable pore size and connectivity, high surface area and accessibility. Indeed the combination of soft chemical routes and spray processing provides "a wind of change" in the field of "advanced materials". These strategies give birth to a promising family of innovative materials with many actual and future potential applications in various domains such as catalysis, sensing, photonic and microelectronic devices, nano-ionics and energy, functional coatings, biomaterials, multifunctional therapeutic carriers, and microfluidics, among others. 相似文献
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聚合物/无机物纳米复合材料研究现状 总被引:4,自引:0,他引:4
纳米材料是继单组分材料,复合材料和梯度材料之后的第四代材料,聚合物/无机物纳米复合材料的研究已成为当今高分子化学与物理,无机化学和材料化学等诸多交叉学科的前沿领域,聚合物和无机物在纳米及分子水平上的复合,将使各自的优势得到最充分的体现,简要概述了聚合物/无机物纳米复合材料的制备方法,结构与性能及其应用。 相似文献