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概括叙述了氮化铝陶瓷用作基片材料的现状,指出了制备氮化铝陶瓷时,所需粉末的合成方法制品的成型工艺,烧成及后处理的方法,各种方法的优缺点和可行性等,并对用作基本材料的高热导率氮化铝陶瓷的未来发展,进行了展望。 相似文献
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电子封装材料包括金属基封装材料、陶瓷基封装材料和高分子封装材料。其中高分子封装材料(主要为环氧树脂)以其在成本和密度方面的优势在封装材料中一枝独秀,有95%的封装都由环氧树脂来完成。环氧树脂作为集成电路的支撑材料,有着极大的市场容量。随着集成电路的集成度越来越高,布线日益精细化,芯片尺寸小型化以及封装速度的提高,以前的环氧树脂已不能满足性能要求,为适应现代电子封装的要求,电子级环氧树脂应具有优良耐热耐湿性、高纯度低应力低张膨胀系数等特性,以适应未来电子封装的要求。本文以此为环氧树脂封装材料的发展方向,着重论述了环氧树脂电子封装材料的研究现状和发展趋势。 相似文献
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本文对作为厚膜电器元件基片材料的玻璃陶瓷与氧化铝陶瓷的性能进行了比较,结果表明,玻璃陶瓷基片能使厚膜电器元件具有更高的工作温度。 相似文献
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先进电子封装技术与材料 总被引:9,自引:0,他引:9
概述了目前主要的先进电子封装技术及发展趋势、电子封装材料的发展历程以及随着先进的封装形式和技术的不断更新,封装材料的发展方向;重点阐述了环氧塑封料的性能、性能与组分间的关系、改进方法以及发展趋势;简述了先进封装用的液体环氧封装材料、聚酰亚胺材料等研究情况。 相似文献
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The utilization of lipids is presently in the spotlight of food industry as they are one of novel renewable and sustainable raw materials. Lipids derived materials are considered as a promising alternate to petro-based polymers as they are sustainable, biorenewable, biodegradable, and environmentally benign. These unique attributes draw the attention of scientific community for the use of lipids in food packaging applications with a potential to compete with fossil fuel derived polymers. This paper reviews recent advances in the use of lipids and their effect on the barrier, antimicrobial, antioxidant, and mechanical properties of films, coating and nanocomposites for food packaging applications. Modification of lipids and its chemical interactions with other biopolymers during processing for the synthesis of different materials are also discussed. Global patents and research trend in use of lipids for the preparation of biocomposites are also described. The role of lipids in the circular economy is highlighted and life cycle assessment of lipids derived products is outlined with examples. The review is concluded with synoptic view of existing and forthcoming potential use of lipids in various food packaging applications. 相似文献
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陶瓷材料,由于其耐高温、耐腐蚀、耐磨等性能优异,在各行各业应用相当广泛。但也正是因为它的这些特性,在使用化学方法进行元素分析时,会遇到样品难以消解的问题,导致测试无法进行。文章重点研究电子元件中常用的三氧化二铝、氧化锆类陶瓷材料的消解方法,并介绍使用ICP-OES对消解完全的样品溶液进行元素分析的注意事项。 相似文献
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为了建立化妆品塑料包装材料中邻苯二甲酸酯(PAEs)的测定方法,通过设计正交试验,优化超声振荡萃取的条件,并通过气相色谱-质谱联用仪进行测定。结果表明:16种PAEs在线性范围内的相关系数均大于0.996,方法检出限0.157~0.928 mg/L,加标回收率在87.4%~108.3%范围内,RSD(n=6)均小于7.0%。聚对苯二甲酸乙二醇酯(PET)、聚丙烯(PP)、丙烯腈-丁二烯-苯乙烯(ABS)、聚苯乙烯(PS)中PAEs的检出率达到82.6%。该方法操作简单,高效准确,可以检测不同化妆品塑料包装的PAEs。 相似文献
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Ceramic and Glass-Ceramic Packaging in the 1990s 总被引:22,自引:0,他引:22
Rao R. Tummala 《Journal of the American Ceramic Society》1991,74(5):895-908
A broad overview of packaging involving interconnecting, powering, protecting, and cooling semiconductor chips to meet a variety of computer system needs is presented. The general requirements for ceramics in terms of their thermal, mechanical, electrical, and dimensional control requirements are presented, both for high-performance and low-performance applications. Glass-ceramics are identified as the best candidates for high-performance systems, and aluminum nitride, alumina, or mullite are identified for low-performance systems. Glass-ceramic/copper substrate technology is discussed as an example of high-performance ceramic packaging for use in 1990s. Lower-dielectric-constant ceramics such as composites of silica, borosilicate, and cordierite, with or without polymers and porosity, are projected as potential ceramic substrate materials by the year 2000. 相似文献