纳米锑掺杂氧化锡（ATO）的研究及其在透明隔热涂料中的应用

纳米锑掺杂氧化锡（ATO）粉体材料由于其特殊的结构而使它具有与其他材料所不同的光电性能,是一种极具发展潜力的新型多功能导电材料,因而制备出性能优良的纳米ATO粉体显得尤为重要。文章介绍了纳米ATO材料独特的光电性能,综述了纳米ATO粉体的主要制备方法,以及目前国内外纳米ATO粉体材料在透明隔热涂料中的应用研究,并且针对当前纳米ATO制备以及应用面临的问题提出几点建议。     

玻璃用纳米隔热涂料的研究进展

纳米氧化锡锑(ATO)等粒子是一种n型半导体材料,由其制成的膜具有很高的红外屏蔽效果和良好的可见光区透过率.将纳米ATO应用于涂料中能够制备出透明玻璃隔热涂料,具有极高的应用价值.本文对纳米隔热涂料的隔热机理进行了介绍,并对透明隔热涂料的研究状况、纳米隔热复合涂料的制备方法进行了综述.     

纳米ATO导电浆料的分散稳定性

将纳米ATO粉体分散于溶剂中制备成纳米ATO导电涂料.通过黏度测定和沉降实验,讨论了分散剂种类、pH等参数对制备浆料的影响,进行优化筛选.经粒径分布测定及扫描电镜观察,最终制得分散稳定性较好的纳米ATO浆料.     

含纳米ATO聚氨酯弹性抗静电涂料

以脂肪族聚氨酯弹性树脂为基体，透明纳米ATO导电粉为导电介质，添加超分散剂，采用物理与化学相结合的分散方法对纳米ATO进行预处理。主要解决纳米粒子的分散与团聚的难题，制备出可常温固化、颜色可调的含纳米ATO聚氨酯弹性抗静电涂料。讨论了基体树脂、纳米ATO含量、超分散剂种类与加量、研磨时间以及助剂等因素对抗静电涂料的表面电阻、耐候性、弹性、强度以及稳定性等性能的影响。同时对涂料的性能进行了测试与表征。     

ATO/APU纳米复合透明隔热涂料的制备与性能研究

以纳米氧化锡锑(ATO)水性浆料为隔热材料,水性聚氨酯树脂(APU)为成膜物质制备出ATO/APU纳米复合透明隔热涂料。对悬浮ATO粒子的分散稳定性、ATO/APU复合涂膜的物理性能、可见光-近红外透射光谱透过率、隔热性能进行研究。结果表明,纳米ATO粉体通过偶联剂KH-550改性后,与APU复合制得了分散稳定的纳米复合涂料;ATO/APU复合涂料不仅具有良好的成膜性能,而且在保持可见光透过率83.0%时,红外阻隔率达到70%,隔热后温差能保持在6℃左右,复合涂料具有良好的隔热性能。     

纳米ATO透明隔热涂料的制备与性能研究

以自制纳米氧化锡锑（ ATO）及其水性浆料和水性聚氨酯为原料,采用共混法制备出纳米 ATO透明隔热涂料。对纳米 ATO涂料的隔热性和透光性进行研究,结果表明：将通过溶胶 -凝胶法制备的 25 nm的 ATO粉体配制成水性浆料,与水性聚氨酯 SX-240共混制备出的纳米 ATO透明隔热涂料,具有较好的透明隔热性能。当涂膜厚度为 60 μm时,其可见光透过率（λ=600 nm）为 72.35%,平均红外透过率为 45.56%,隔热检测装置内温差达到 3~4 ℃。     

ATO的制备与表征研究以及应用现状分析

氧化锡锑(Antimony Tin Oxide,ATO)是一种拥有无可比拟的优势性质的材料。纳米级ATO更是在物理和化学性质上有着独特的性质。人们日益关注ATO这种材料并开发了许多的合成方法来合成纳米级ATO。通过介绍ATO的常用制备方法、常用表征方法以及现在的应用现状,对ATO未来的发展进行探讨和展望。     

纳米ATO隔热涂料中水性分散浆料的制备和研究

纳米氧化锡锑(ATO)是制备透明隔热涂料的理想材料,本研究以摩尔质量比为Sb∶Sn=7∶93的ATO粉体和一定比例的分散剂,制备得到了分散性能良好的ATO水性分散浆料,浆料的可见光透过率高达80%,且浆料中粒子的平均大小为0.35μm。用XRD、FT-IR、激光粒度仪等对浆料的性能进行表征,并对浆料的稳定性和透光性进行研究,实验所制备的ATO浆料具有优良的稳定性和透光性,且制备的ATO隔热涂料具有良好的隔热性能。     

纳米氧化锡锑透明隔热涂料研究进展

对以纳米氧化锡锑(Antimony doped Tin Oxide,简称ATO)为功能材料,与树脂混合制成的具有光谱选择性的纳米隔热复合涂层的隔热机理、制备方法、发展现状进行了综述。总结了纳米复合隔热涂料工业化面临的难题并提出了以后的研究方向和重点。     

水性氟丙树脂透明隔热涂料的制备及性能

为了解决建筑玻璃的能耗问题,以自制的分散稳定性良好的水性纳米氧化锡锑(ATO)浆料和水性氟丙树脂共混,制备了水性纳米ATO透明隔热涂料,研究了水性纳米ATO浆料和紫外线吸收剂UV-A的用量对涂膜光学性能的影响。结果显示,当水性纳米ATO浆料的添加量为25.62%,紫外线吸收剂UV-A的用量为3%时,所制得的水性纳米ATO透明隔热涂料具有良好的隔热效果和较高的可见光透过率,其红外阻隔率达到80.21%,可见光和紫外光透过率分别为78%和20.12%,具有良好的市场应用前景。     

PVA/锑搀杂二氧化锡纳米复合材料的结构与性能研究

采用溶液共混的方式制备聚乙烯醇/锑搀杂二氧化锡(PVA/ATO)纳米复合材料,采用红外光谱(FTIR)、差示扫描量热仪(DSC)、光学显微镜、扫描电镜对复合材料的结构及微观形态进行了表征,对复合材料的导电性能及机械性能进行了测试。结果表明:PVA与ATO之间在共混膜中存在强烈的相互作用,这种相互作用可使纳米ATO在PVA基体中分散良好,在ATO含量较低的情况下就可获得导电性能及机械性能良好的复合材料;纳米ATO明显的异相成核效应,能够提高PVA的结晶温度及熔融温度。     

PMMA/ATO纳米复合材料的结构与导电性能

采用溶液共混的方式制备了聚甲基丙烯酸甲酯/纳米掺锑二氧化锡(PMMA/ATO)复合材料,分析了复合材料的微观相态结构及导电性能,并对复合材料的物理机械性能及热性能进行了研究.结果表明:经过钛酸酯偶联剂处理的纳米ATO在PMMA基体中分散良好,在含量较低的情况下即可获导电性能良好的复合材料;当纳米ATO的质量分数为5%时,复合材料具有良好的物理机械性能;纳米ATO在PMMA基体中起到了交联点的作用,使其玻璃化转变温度随着ATO的增加而升高,从而改善了PMMA的耐热性能.     

How coating/polymer properties affect fiber/cable performance

The selection of the coatings/polymers used to fabricate optical fibers has been shown to be very important in determining their optical, mechanical, and connectorization performance. Material properties such as refractive index, optical transmission, and thermal coefficient of linear expansion are critical for coatings functioning as cladding materials. Coating adhesion to the glass surface, water absorption and water vapor permeation, as well as the ability to passivate the glass surface, have strong affects on the strength and fatigue behavior of fibers. Hard, thin, adhesive primary coatings are beneficial in making connectorization easier and more reliable. Many of the preferred properties for the fiber coating are different from those preferred for electrical wire, not only because light must be transmitted rather than electricity, but also because of the brittle nature of the silica substrate and the coupling between physical displacements and light transmission within the guiding material (microbend effects). The selection of cable materials is quite similar to that employed in the electrical wire and cable field. Much more attention must be given to cable design than for the latter. Designs/applications requiring tight jacketed or filled cables put special constraints on the selection of materials for the optical cables, which are more restrictive than for electrical cables.     

聚苯胺/nano-ATO导电复合材料的原位聚合与表征

用原位聚合法,以十二烷基苯磺酸(DBSA)/HC l混酸为掺杂剂,过硫酸胺(APS)为氧化剂,制备了聚苯胺/掺锑二氧化锡(ATO)导电复合材料。探讨了ATO用量对导电复合材料电导率的影响。在n(苯胺)∶n(APS)∶n(DBSA)=1∶1∶0.7,m(ATO)∶m(苯胺)=0.1∶1时,复合材料室温25℃的电导率最高可达8.35 S/cm,比通常方法合成的聚苯胺和nano-ATO的电导率分别提高约1至2个数量级。通过FTIR、XRD、SEM和TEM对目标物进行了表征,结果表明,苯胺优先在ATO纳米粒子表面聚合,形成聚苯胺包覆ATO的导电复合材料。     

Coatings with metallic effect pigments for antimicrobial and conductive coating of textiles with electromagnetic shielding properties

Effect pigments were originally developed to realize advanced optical effects by coating on several types of material surfaces. However, metallic effect pigments are expected to be valuable for many other applications, such as antimicrobial effects, electrical conductive coatings, or shielding against radio waves (electromagnetic shielding). Accordingly, the aim of this article is to evaluate the advanced properties which can be realized by application of coatings containing metallic effect pigments onto textile materials leading to new functional textiles. In total, four different metallic effect pigments were investigated and compared to silver and graphite pigments. By application of coatings with copper- or silver-containing effect pigments significant antibacterial properties against E. coli and S. aureus can be realized. To achieve electric conductive textiles, which also enable effective shielding against radio waves, a copper pigment carrying a silver coating leads to the best properties. Altogether, an effective coating method is presented to achieve functional textiles that offer a broad range of possible applications.     

雷达罩用新型抗静电防腐耐磨涂料的研制

以含氟二元醇树脂、六亚甲基二异氰酸酯缩二脲溶液为原料,二月桂酸二丁基锡为催化剂制备了含氟聚氨酯树脂,并以其为基本成膜物,并掺入耐高温填料二氧化钛,导电填料纳米ATO（掺锑二氧化锡）,聚四氟乙烯微粉,同时加入超分散剂、溶剂等制备了雷达罩用新型抗静电防腐耐磨涂料。该涂料不仅具有优良的抗静电性、弹性及良好的附着力,同时还具有很好的防腐蚀性、耐老化性和耐磨性,是一类新型的多功能涂料。     

The effect of metal coatings on the interfacial bonding strength of ceramics to copper in sintered Cu-SiC composites

Cu-SiC composites are very promising materials which have high thermal and electrical conductivity and may find many applications. Unfortunately, the main disadvantage of these materials is the dissolution of silicon in copper at elevated temperature, which significantly reduces their properties. In order to overcome this problem particles can be coated with a protective material before sintering. In this paper– the influence of three different metallic coatings on bonding strength were investigated. SiC particles were coated with tungsten, chromium or titanium. As reference a material with uncoated particles was prepared. The experiments were carried out with the use of microtensile tester. The highest increase in strength was observed in the case of chromium coating. On the other hand, the titanium coating, which was of very poor quality, decrease the bonding strength in comparison with uncoated particles. Furthermore, scanning electron and optical microscopes were used to determine the mechanism of debonding.