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纳米材料和纳米技术在新型建筑材料中的应用 总被引:1,自引:0,他引:1
介绍了纳米技术在涂料、混凝土材料、陶瓷和高分子材料等方面的应用情况,并展望了纳米材料和纳米技术在建材领域的应用前景.通过论述认为,纳米技术为纳米材料的广泛应用提供了可靠的技术基础和理论指导,也为研制新型建材提供了新思路. 相似文献
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9月12日,2007年广东省第二届陶瓷艺术设计作品展览会在潮州市枫溪陶瓷城举办。一款能够自动消毒的纳米技术新产品引起了与会许多人的兴趣,它叫“抗菌玉脂釉茶具套组”,作者是中国瓷都潮州茶具专家、陶瓷工艺美术师章振顺。因为这一款能够自动消毒的纳米技术新产晶,9月13日,南方日报作专题报道。 相似文献
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陶瓷材料作为材料的三大支柱之一,在日常生活及工业生产中起着举足轻重的作用。随着纳米技术的广泛应用,纳米陶瓷随之产生,使陶瓷具有象金属一样的柔韧性和可加工性。针对神奇的纳米技术孕育着技术变革,分析了纳米陶瓷的性能特点,介绍了纳米技术在陶瓷领域的应用,研究了纳米陶瓷的制备,同时指出了高性能陶瓷与纳米陶瓷的发展趋势。 相似文献
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介绍了纳米陶瓷材料的概况及纳米复相陶瓷粉体所具有的特殊性能,进一步详细探讨了纳米技术在陶瓷领域的最新应用及发展状况,及其在防护、耐高温、腐蚀信息、医学临床、吸收、压电、清洁等各个领域的发展和贡献,对研究纳米陶瓷发展前景具有重要意义。 相似文献
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金属氧化物纳米技术在功能纺织品中的应用及研究进展 总被引:1,自引:0,他引:1
综述了近年来金属氧化物纳米技术在功能纺织品防紫外线,防辐射,抗菌,防皱,自洁净,拒水,拒油整理方面的应用及研究现状,并就纳米技术在纺织品功能整理研究中存在的问题和发展趋势进行了分析和展望。 相似文献
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纳米技术在钻井液中的应用现状 总被引:2,自引:0,他引:2
本文主要综述了纳米材料的特性以及纳米技术与胶体科技的区别,探讨了国内纳米技术在钻井液中的应用,并指出了纳米技术在钻井液应用中存在的问题和发展方向。 相似文献
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ONACCURACYOFANALYSISOFOFHYDROGEN1前言我公司目前应用的氢气纯度分析方法有两种,一种是爆炸反应法,另一种是焦性没食子酸吸收法。几年来,人们对两种分析方法的准确性曾有过褒贬不一的评论。这里我们也谈谈自己粗浅的观点。2爆炸法测定氢气纯度一定量的氢气样品与适量的空气之均匀混合物因反应后生成液体水而引起气体体积减少,减少的体积等于参加反应气体体积之和。其中l/3为氧气,2/3为氢气。根据氢气取样量和反应前后混气体体积之差,以及氢气在反应中的体积比例关系,可计算出样品的氢气纯度。计算公式式中:A一混… 相似文献
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P. P. Budnikoff 《Journal of the American Ceramic Society》1924,7(11):817-820
The different analytical methods proposed for the evaluation of gypsum have been subjected to an experimental test. A combination method, consisting of a fusion with KHCO3 and determination of CaO by KMnO4 titration, the SO3 by Andrews method of titration of BaCrO4 has been found to give very reliable results with the least consumption of time. 相似文献
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A model is developed for the sedimentation from a suspension of two particle species of unequal densities and of different sizes. The composition and the thickness of various layers in the sediments are predicted using graphical and analytical methods. The model predictions were in excellent agreement with experimental results, when the particle size ratio was ≥ 108. When size ratio of the particles was 2.60 and 4.31 the agreement occurred in about 50 percent of the cases. 相似文献
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A novel technique serves to monitor instantaneous rates of loss of a volatile solute from a suspended drop during drying. A highly sensitive electron capture detector is used to monitor concentrations of SF6 released into a flowing gas stream from a suspended, drying drop. Simultaneously, the appearance and morphological development of the drop are monitored with a video camera. This provides the wherewithal of relating instantaneous rates of loss of the volatile solute to particular events during the development of particle morphology.
Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology. 相似文献
Initial experiments have been carried out with drops of aqueous solutions of glucose, sucrose, maltodextrin and coffee extract. The results clearly display the onset of the volatiles-retentive selective diffusion phenomenon. There is also substantial loss of the volatile component later in the drying process, when the drops undergo repeated ex ansion, bursting and cratering due to the formation of internaf bubbles. These experiments appear to be the first quantitative demonstration of major losses accompanying changes in drop morphology. 相似文献
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ANALYSIS OF RECENT MEASUREMENTS OF THE VISCOSITY OF GLASSES 总被引:5,自引:0,他引:5
Viscosity of Simple Soda-Silicate 500° to 1400°C Comparison of the results given by English with those of Washburn, Shelton and Libman, indicates a discrepancy in the absolute values of log10 viscosity amounting to 0.6, those of Washburn et al., being relatively too high. If correction for this is made, the isothermal curves of log10 viscosity as a function of soda content are smooth up to 50% Na2O, showing no inflection. The observations as a function of temperature T are all represented within accidental error by an equation of the type where all three constants vary regularly with the composition. Change of Viscosity of Glass (6SiO2, 2Na2O) due to Molecular Substitution of CaO, MgO and Al2O3 for Na2O The effect is clearly brought out by plotting (from the results of English) the change of log10η due to the substitution as a function of temperature. The curves each show a sharp bend at a temperature between 840° and 1050°C, which is designated the aggregation temperature Ta. If we divide these curves by the corresponding percentage substituted, we get curves for each oxide which are straight and parallel below the aggregation temperatures, the slopes (increase of change of log10η per 100°C) being −0.056 (CaO), −0.055 (MgO), −0.018 (A12O3) per per cent oxide substituted. For substitution of 1/2 molecule the slopes are −0.325 (CaO), −0.23 (MgO) and −0.18 (Al2O3) per 100°. At the aggregation temperature the change of log10η per per cent is a minimum, 0.03 to 0.06 for CaO, 0.12 for MgO, 0.07 for Al2O3. Evidence of Aggregation in Glasses, from viscosity Measurements The sharp bends in the plots of change of log10η due to substitution of an oxide for Na2O, suggest the beginning of molecular aggregation at these temperatures. These aggregation temperatures are close to the devitrification temperatures, but the effect on the viscosity curves cannot be due to actual devitrification since it does not change with time. Taking the aggregation temperatures as equal to devitrification temperatures, additional isotherms are roughly sketched into the equilibrium triangle of the system Na2O-CaO-SiO2. Change of Viscosity of Glass (4SiO2, 2Na2O) due to of Substitution of B2O3 for SiO2 The change of log10η (from the results of English) is plotted as a function of temperature, and also the change of log10η per per cent B2O3. The curves are more complex than for the substitution for Na2O. 相似文献
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面对日益激烈的市场竞争,摩托车油箱外观质量越来越成为影响销售的因素之一。文章介绍了改进工艺后的油箱涂装,该涂装体系提高了油箱外观的丰满度,降低了油箱涂装的生产成本。 相似文献