共查询到19条相似文献,搜索用时 78 毫秒
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电子封装材料用环氧树脂增韧研究进展 总被引:7,自引:1,他引:7
未改性环氧树脂固化物存在质脆、冲击性能差等缺点,限制了它在复杂环境下的应用。针对这些不足,国内外科研工作者对其进行了大量改性研究。文中综述了近年来相关研究领域的研究进展及发展趋势。 相似文献
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电子封装用环氧树脂的研究进展 总被引:16,自引:0,他引:16
介绍了国内环氧树脂的生产现状及其在电子封装业中的发展前景,并概述了现代电子封装对环氧树脂性能的新要求及电子封装无铅化对环氧树脂提出的挑战。 相似文献
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环三磷腈基多官能液体脂环族环氧树脂的合成 总被引:1,自引:0,他引:1
以双环戊二烯、乙二醇和六氯环三磷腈为原料合成一种新型环三磷腈基多官能脂环族环氧化合物(PCNEP)。采用傅里叶变换红外光谱、核磁共振、质谱分析和测定环氧值等方法对PCNEP及其中间体的化学结构进行了表征。合成的脂环族环氧树脂用甲基四氢邻苯二甲酸酐固化,并通过热重分析将PCNEP固化物的热性能与商品化脂环族环氧树脂ERL-4221进行了比较。结果表明:PCNEP固化物的起始热分解温度低于ERL-4221固化物,但在500℃和700℃的高温下,PCNEP固化物的残炭量分别为28.87%,24.73%。 相似文献
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电子级塑封材料的研究及应用 总被引:3,自引:0,他引:3
<正> 一、前言电子元器件的塑料封装已成为当前器件封装的主流,约有80%的集成电路、90%以上的分立器件采用塑料封装,它比陶瓷、金属封装工艺简单,成本低、体积小、重量轻、可靠性高。随着电子工业的发展,器件封装用树脂和封装工艺的研究已成为各国极为关注、重视的课题。 相似文献
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本文阐述了由3,4-环氧基环己基甲酸-3’,4’-环氧基环己基甲酯及3,4-环氧基-6’-甲基环己基甲酯的制备方法、性能及应用,并对合成该类化合物的相关因素进行了探讨。 相似文献
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以脂环族环氧树脂为扩链剂,对聚酰胺(PA)1010的加成型化学扩链做了研究,并对3种扩链剂(ZH9221、ZH206和TDE85)的偶联效果和扩链产物的热稳定性能进行了探讨。结果表明,3种扩链剂对PA1010的扩链增粘均十分有效.熔体转矩可分别达到初始值的4倍、5倍和6倍以上,而且所需反应时间依次减少。其中,TDE85由于带有2个缩水甘油酯型环氧基团而活性很高,但在一定温度下熔体转矩达到极大值后开始缓慢下降,表明扩链产物在高温条件下发生断链。扩链剂用量存在最佳值.用量过多对扩链反应并无益处。扩链后PA1010的端羧基含量降至原先的20%~30%。 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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介绍了国内外环氧灌封材料的生产现状及其在电子封装业中的发展前景,并概述了对现代电子封装材料的环保新要求及电子封装无卤化阻燃对环氧树脂提出的挑战。 相似文献
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Cationic UV‐curable methacrylate copolymers consisting of glycidyl methacrylate, iso‐butyl methacrylate, and 2,2,3,4,4,4‐hexafluorobutyl methacrylate were synthesized, and their structures were characterized by FTIR, 1H NMR, and 13C NMR. A series of UV‐cured composite films based on the synthesized copolymers and an alicyclic epoxy resin, 3,4‐epoxycyclohexylmethyl‐3,4‐epoxycyclohexanecarboxylate (CE) were obtained through photopolymerization. Their surface contact angle, chemical ability, gloss, light transmittance, thermal behavior, micromorphology, and shrinkage were investigated. Results indicated that these cured resins showed excellent gloss and visible light transmittance; after the combination of the copolymers and CE, and in the presence of fluorine in the curing systems they exhibited relatively fine water resistance, chemical, and thermal stability. It was observed that these copolymers could decrease the degree of the volume shrinkage to CE. The UV‐curable materials may have promising applications in optical fiber coatings, flip chip and Organic Light‐Emitting Diode (OLED) packing. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012 相似文献
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Phosphorus-containing liquid cycloaliphatic epoxy resins for reworkable environment-friendly electronic packaging materials 总被引:2,自引:0,他引:2
Novel thermally reworkable, phosphorus-containing, di- and tri-functional liquid cycloaliphatic epoxy resins were designed and synthesized. Their chemical structures were characterized by means of MS, FTIR, 1H NMR and 31P NMR methods. After curing, the products were transparent and stable up to 220 °C, while exhibited quick thermal decomposition at the temperature range of 255-280 °C. The removal test showed that, after heat-treatment at 260 °C in air atmosphere for only 4 min, the residual char on the glass substrate could be easily wiped off. This unique degradation behavior was attributed to the synergistic effect of two factors: the thermally-labile phosphate groups evenly distributed within the three-dimensional network and the in-situ catalyzing of phosphoric acid generated from the cleavage of phosphate bond on the pyrolysis of adjacent other phosphate and ester groups, as evidenced by the results of molecular modeling, isothermal TGA and FTIR spectra. In addition, compared to the commercial cycloaliphatic epoxy resin ERL-4221, the newly synthesized epoxy resins had increased limiting oxygen index (LOI) by 31%. The combination of excellent reworkability, non-halogen flame retardancy, high glass transition temperature of 227 °C and high mechanical modulus endows them the potential for environment-friendly microelectronic and optoelectronic packaging applications. 相似文献