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20 0 0年 5月 2 6日~ 31日 ,由中国稀土学会玻璃陶瓷专业委员会主办 ,湖北华光器材厂承办的全国稀土玻璃陶瓷四届二次年会在湖北省襄樊市邮电宾馆召开 ,湖北省经贸委稀土办、吉林省计委稀土办、湖北省国防工办的领导、《中国稀土学报》编辑、部分高校、科研院所专家、教授、稀土材料生产、应用厂家代表以及玻璃陶瓷专业委员会委员参加了会议。会议由专业委员会副主任、湖北华光器材厂詹祖盛厂长主持。由邱关明教授致开幕词 ,湖北华光器材厂詹祖盛厂长、湖北省经贸委稀土办司玉甫主任、吉林省计委稀土办王以荣主任、湖北省国防工办宰宏云处… 相似文献
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Chitosan-poly(acryfic acid) hydrogel bonded with Eu^3+ was prepared by radical solution polymerization. Biodegradable chitosan, N,N'-methylen-diacrylamide, and potassium persulphate were used as the basic material, cross-linking agent, and initiator, respectively. The structure and thermal property of hydrogel were characterized by infrared spectrometry, X-ray diffraction, scanning electron microscopy, and differential scanning calorimetry. The swollen property and fluorescent performance were also characterized. The results showed that the rare earth presented unique distribution in the hydrogel due to the formation of chemical bonds after polymerization. The glass transition temperature of the hydrogel decreased remarkably, which might broaden the range of its elastic application considerably. Moreover, the characteristic fluorescent emission of Eu^3+ was observed in the hydrogel, which was indicative of the excellent luminescent performance. 相似文献
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迄今为止,对玻璃态的结构,尚未形成统一、公认的理论。本文提出对无机化合物玻璃态结构的看法:无机化合物玻璃是由络阴离子与阳离子所组成。并提出:络阴离子形成的五要素、络阴离子联结的三法则、阳离子的三个必备条件及巨大络合物形成的五原理。 相似文献
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溶胶-凝胶法制备的BaMgAl10O17:Eu2+荧光性能研究 总被引:2,自引:0,他引:2
研究了柠檬酸为络合剂的溶胶-凝胶法制备的BaMgAl10O17Eu2+蓝色荧光粉的荧光性能,考察了Eu 2+掺杂量和晶化温度等因素对荧光粉的紫外和真空紫外波段激发的荧光性能的影响,并通过X射线衍射分析,探讨了Eu2+掺杂量引起的晶胞参数和荧光粉发射波长的变化.结果表明BaMgAl10O17Eu2+随着Eu2+掺杂量的增加,除荧光强度发生变化外,发射光谱的波长发生红移;真空紫外波段激发,Eu2+的最佳添加量为0.1,紫外波段激发下为0.12,发射峰波长均为450 nm;晶化时间2小时,温度在1300℃以上更好. 相似文献
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Magneticpolymermicrospherecanbeseparatedquicklyundermagneticfieldandithasgotwideappli cationinmanyfields ,suchascellseparationetc .Themicrospheremustpossesshighmagneticresponsibili ty ,sothatmagneticseparationisquickandconve nient.Themagneticresponsibilit… 相似文献
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Coating of SiC Powder with Nano YAG Phase 总被引:5,自引:0,他引:5
SiCceramiccompositeshavefoundextensiveap plicationsinmodernindustryduetotheirexcellentchemicalstabilityandwear resistance .Rodeghieroetal.[1~ 3 ] investigatedthefabricationofSiC Al2 O3 ce ramiccompositematerialsviaco precipitationcoatingandsol gelmethods… 相似文献