共查询到19条相似文献,搜索用时 62 毫秒
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功能高分子材料,是七十年代从高分子科学与现代技术领域发展起来、与其他学科密切结合而产生的一类新型材料。所涉及范围甚广,内容非常丰富。目前还处于开拓阶段。功能高分子材料,通常是指材料受到物理或化学的外部刺激、或者与其他物质发生相互作用后,产生物理或化学变化,从而完 相似文献
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高分子材料在微胶囊新技术中的应用 总被引:31,自引:0,他引:31
对高分子材料在微胶囊新技术中的应用状况进行了综述。介绍了制做微胶囊的高分子材料种类,制备微胶囊的方法,讨论了影响微胶囊性能的因素,并展示了微胶囊新技术的应用场合。 相似文献
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本文综述了近年来高分子金属配合物功能材料的进展;详细叙述了高分子金属配合物的分类和特征以及它们在分离、催化、能量、电子、生物等方面的功能。 相似文献
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The relative permeabilities of naphthalene through different types of common polymeric food packaging materials were determined by migration studies in a controlled environment. The results illustrate that polyolefins, such as low density polyethylene (LDPE), have a higher relative permeability than other polymers, such as polyethylene terephthalate (PET) or polyvinylchloride co-polymer (PVC). This was explained by the correlation between the permeability of the migrant and the glass transition temperature (Tg) of the different polymers, as well as their polarity. 相似文献
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导热高分子材料研究进展 总被引:32,自引:0,他引:32
讨论了提高聚合物导热性能的途径-合成高导热系数的结构聚合物,用高导热无机填料对聚合物进行填充复合。综述了导热高分子材料的研究成果:聚合物导热的基本概念和影响其导热性能的因素及导热系数的预测理论;聚合物基导热复合材料的选材、复合技术及其应用。指出了导热高分子材料的研究方向--纳米导热填料的研究和开发;聚合物树脂基体的物理化学改性;聚合物基体与导热填料复合新技术的研究和开发;复合材料导热模型的建立、导热机理(特别是聚合物基体与导热填料界面的结构与性能对材料导热性能的影响)及导热通路的形成等;探索高导热本体聚合物材料的制备方法和途径等。对导热高分子材料的研究和开发有重要意义。 相似文献
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Nanoporous polymeric materials are porous materials with pore sizes in the nanometer range (i.e., below 200 nm), processed as bulk or film materials, and from a wide set of polymers. Over the last several years, research and development on these novel materials have progressed significantly, because it is believed that the reduction of the pore size to the nanometer range could strongly influence some of the properties of porous polymers, providing unexpected and improved properties compared to conventional porous and microporous polymers and non-porous solids.In this review, the key properties of these nanoporous polymeric materials (mechanical, thermal, dielectric, optical, filtration, sensing, etc.) are analyzed. The experimental and theoretical results obtained up to date related to the structure–property relations are presented. In several sections, in order to present a more compressive approach, the trends obtained for nanoporous polymers are compared to those for metallic and ceramic nanoporous systems. Moreover, some specific characteristics of these materials, such as the consequences of the confinement of both gas and solid phases, are described. Likewise, the main production methods are briefly described. Finally, some of the potential applications of these materials are also discussed in this paper. 相似文献