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ITO涂料在8—14μm波段红外发射率的研究 总被引:43,自引:4,他引:39
从氧化锡的掺杂含量,粘合剂的选择和粘合剂的用量三方面对以掺锡氧化铟半导体为颜料的涂料在8-14μm波段的红外发射率进行了研究。氧化锡的掺杂摩尔百分含量在5%时发射率最低;在几种粘合剂中,以KRATON树脂为粘合剂时发射率最低;以酚醛树脂为粘合剂,随粘合剂用量增加,涂层发射率升高,当ITO质量百分数大地25%时,发射率不再降低。 相似文献
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远扬 《激光与光电子学进展》2000,(6)
在美国专门光学件制造设计公司组装透镜系统中,未必元件越小越容易处理。透镜尺寸减小时,整个系统的准直精度和定位精度也相应降低。问题是固化的粘合剂能否保证透镜的凹凸度和防止位移。对几种低收缩性粘合剂和聚合物进行比较后,公司从Dymax选择了OP-60粘合剂,在适度的紫外线曝光量(100mW/cm2)下,15s内可固化。公司说,一些粘合剂固化时收缩较大,有时会给共焦显微镜透镜系统带来问题,这种系统要求透镜具有微米级的高精度公差。如使用太多的粘合剂,将使透镜变形、光心偏移,或使透镜倾斜。粘合剂不能用得太多,但必须用它密封透镜和固定波片,… 相似文献
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《电子工业专用设备》2009,(7):63-64
为了响应关于减少使用卤化材料以保护环境的行业倡议和法规,汉高公司日前推出新系列的乐泰(Loctite)粘合剂和密封剂,该产品满足IPCIEC#61249-2-21要求。这一系列粘合剂主要用于便携电子设备,如手机、PDA、笔记本电脑和硬盘驱动器,配方中溴和氯的含量低于9×10^-4,总卤含量低于15×10^-4。这些产品所含的卤素水平很低,往往低于可检测值。整个系列的乐泰无卤粘合剂包括30多个产品,涉及到一系列技术,包括氰基丙烯酸盐粘合剂、 相似文献
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<正> 在业余电子制作、家电维修时,经常要使用到粘合剂,在无现成品的情况下,可按下述配方自制,其粘接效果良好。 1.用于粘接台式收音机调谐玻璃和金属框架的粘合剂的配制 取纯松香30克、氧化锌80克、苛性钠50克(16%),先将苛性钠加入热松香中,待两者胶冷后再掺入氧化锌使其成为硬膏,即成为较理想的粘合剂,其粘合度坚牢。 2.用来粘接破损的电视机外壳及收录机塑料外壳的粘合剂的配制 这类粘合剂可按以下六种方法配制: (1)将准备好的有机玻璃碎片,溶解在适量香蕉水中。使之成为胶糊状。 (2)用10~20克聚苯乙稀废塑料牙刷柄,弄碎后放入 相似文献
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选用一种发泡剂材料A,通过配方比例的调整,制作出一种可应用于MLCC生产的发泡胶.该发泡胶可替代现有生粉膜固定方式,并且产品切割后,在一定温度时间条件下,发泡胶发泡失去粘性,产品自动脱落,分散良好,获得性能外观合格的MLCC芯片. 相似文献
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An aqueous developable photoimageable silver conductor composition for high density electronic packaging 总被引:2,自引:0,他引:2
G.G. Umarji S.A. Ketkar G.J. Phatak V.D. Giramkar U.P. Mulik D.P. Amalnerkar 《Microelectronics Reliability》2005,45(12):1903-1909
In our preliminary work, we have formulated aqueous developable photoimageable thick film conductor pastes, consisting of ‘inhouse processed’ submicron sized silver powders (functional material), micron sized lead borosilicate glass frits (permanent binder), epoxy acrylate resin with pendant –COOH group (base photoimageable polymer/temporary binder/organic vehicle) and 2,2′-dimethoxy-2-phenylacetophenone (photoinitiator). The conductor pastes thus formulated were manually screen printed on the alumina substrates, dried, exposed to the ultra-violet light through the desired test patterns, developed in a 1% aqueous sodium carbonate solution, and subjected to a standard one-hour thick film firing cycle. Solid content of the polymer appears to influence the paste performance. Prima facie observations indicate that the paste with the organic:inorganic ratio of 28:72 (corresponding to solid content of 89.9% of the polymer system) exhibits better electrical conductivity, relatively smooth surface finish and line/space resolution of 100 μm with ±5 μm accuracy. Investigations related to the effect of glass content on the properties of photoimageable conductor paste are also furnished in this communication. 相似文献
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外壳为聚苯乙烯硬泡沫的角锥吸波材料 总被引:3,自引:0,他引:3
随着使用频率的降低,微波暗室角锥吸收体的高度也相应增加。传统的聚氨脂泡沫角锥吸收体由于在浸渍和烘干方面存在困难,因而不易制作。为避免聚氨脂泡沫角锥吸收体在大尺寸时浸渍和烘干的困难,以聚苯乙烯硬泡沫板为外壳,以聚苯乙烯泡沫小球和吸波材料混合体为充填物的新型角锥吸波材料已开发成功。聚苯乙烯泡沫具有低密度,高阻燃和低介电常数的特点,因而保证了吸收体的重量轻,阻燃好,吸收性能高的要求。而且吸收体表面平整,洁白,采光好。试验结构表明,500mm高度的吸收体,在2.6-18GHz频率范围内,反射率基本上都优于-50dB。 相似文献
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Hard carbon (HC) has emerged as a promising anode material for sodium-ion batteries (SIBs), whereas it suffers from low initial Coulombic efficiency (ICE) and poor rate capability. Binders endowed with high electron/ion transport and strong mechanical integrity are expected to boost the practical application of HC anodes, which cannot be realized via the functional design of commercially available binders. Herein, a trifunctional sodium alginate (SA)/polyethylene oxide (PEO) binder with massive hydrophilic functional groups and abundant Na+ is synthesized via a feasible esterification reaction. The binder forms a passivation film on glucose-derived carbon (GC) to suppress the electrolyte decomposition and offer stronger adhesion strength. Furthermore, the sluggish Na+ conduction is improved via sufficient ionic transfer channels provided by PEO. Notably, effects of Na+ compensation and interfacial ionic transport of Na+-containing binder for HC anodes are revealed. Therefore, the SA/PEO binder for the GC anode delivers a high ICE up to 87% and a high capacity of 270 mA h g−1 at 0.1 A g−1, both 10% and 80 mA h g−1 higher than that of poly(vinylidene fluoride) binder, respectively. Significantly, this SA/PEO binder can also be applied to coal-based and polymer-based carbon anodes, exhibiting universal applicability. 相似文献
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水基泡沫在光电对抗隐身等领域有着广泛的应用,但现有光电干扰隐身技术存在作用时间短、干扰波段单一、污染环境等问题,难以有效对抗双模、多模精确制导武器。针对上述问题研究水基泡沫配方,开展了新型水基泡沫对可见光、红外(3~5 μm、8~14 μm)、激光(1.06 μm, 10.6 μm)、毫米波(3 mm, 8 mm)和厘米波(2 cm, 3 cm)的消光性能实验以及水基泡沫对8~14 μm波段热像遮蔽干扰效应测试,讨论了水基泡沫消光机理,指出以水基泡沫形成泡沫云或使之与人工雾复合构成幕障,有望获取一种“宽频谱”、“全波段”、“环保型”的新型烟幕武器装备。 相似文献