热控涂层性能退化模型与模型参数求解

针对航天器热控涂层性能的退化规律,提出了类指数模型、指数-指数组合模型,并应用LM(阻尼最小二乘法)算法给出了模型参数的求解方法.利用美国Teflon型涂层地面模拟试验数据进行模型参数求解,并应用得到的模型进行预测外推,将各模型对应的预测结果以及国际上常用的简单指数模型对应的预测结果和美国9年时间跨度的试验数据进行了比较.比较结果表明,提出的模型和给出的方法对于航天器热控涂层性能退化预测是有效的和可行的,并且预测结果优于已有的简单指数模型.     

氟树脂涂料附着力的增强方法

概述了氟树脂涂料的品种及应用,较详细地介绍了氟树脂涂料附着力的增强方法。     

海洋工程防护涂料的研究进展

介绍了海洋工程防护涂料的防腐、防污新技术，以及研究方法和发展趋势，海水是自然界中数量最大且具有很强腐蚀性的天然电解质，海水中含有溶解氧、海洋生物和腐败的有机物等，这些对各类海上运输工具、采油平台、海洋设备等金属构件造成严重危害，目前较为适用且经济的海洋工程防护方法是涂覆防海水腐蚀的海洋涂料。     

Sand-wear resistance of brush electroplated nanocomposite coating in oil and its application to remanufacturing

Sand-wear resistance of nano scale alumina particle reinforced nickel matrix composite coating (n-Al₂O₃/Ni) prepared by brush electroplating technique was investigated via wear tests in sand-contaminated oil lubricant, comparing with that of AISI1045 steel and brush electroplated Ni coating. Effects of testing load, sand content and sand size on worn volume of the three materials, and also coating surface roughness on worn volume of the brush electroplated coatings were accessed. Results show that the worn volume of all the three materials increases with increasing of testing load, sand content and sand size. In the same conditions, n-Al₂O₃/Ni composite coating has the smallest worn volume while AISI1045 steel has the largest because of the n-Al₂O₃ particle effects. As to n-Al₂O₃/Ni and Ni coatings, the surface-polished coatings have obviously lower worn volume than the as-plated coatings. The brush electroplated n-Al₂O₃/Ni composite coating was employed to remanufacture the sand-worn bearing seats of a heavy vehicle and good results were gained. Foundation item: Project (50235030) supported by the National Natural Science Foundation of China; Project (51489020104ZD0401) supported by the National Key Laboratory for Remanufacturing; Project(51418060105JB3058) supported by National Defence Foundation     

“零VOC”丙烯酸酯类涂料的研究进展

在分析水性涂料中有机挥发物（Volatile Organic Compound,VOC）主要来源的基础上,从乳液合成和助剂选择两方面阐述了消除VOC的途径．探讨了利用核壳乳液聚合、引入功能性单体和软硬乳液混拼等思路来解决乳液的高玻璃化温度Tg和最低成膜温度MFT之间的矛盾,着重论述了丙烯酸酯类涂料的制备及其改性．认为“零VOC”涂料适应未来的环境要求．     

印钞废水制备水性内墙涂料

以印钞擦板废水为原料,加入成膜物质（苯丙乳液和硅溶胶）与颜填料（钛白粉、高岭土、碳酸钙、滑石粉）制备低成本水性内墙涂料;考察了硅溶胶用量、废水用量、颜料用量对涂料性能的影响,制备出符合国家标准的水性内墙涂料。与同类产品相比较,硬度更好,且降低了涂料的成本及处理印钞废水所需要的高昂费用,避免了焚烧废油墨渣的二次污染。其基本配方（质量分数）为：苯丙乳液18%,硅溶胶12%,印钞废水30%,钛白粉15%,填料21.6%,SD-505成膜助剂2%,DA-208消泡剂0.3%,5040分散剂0.2%,SD-200水性润湿剂0.1%,防冻剂0.5%,TT-935流平增稠剂0.3%。     

Electrochemical behavior of different shelled microcapsule composite copper coatings

Copper/liquid microcapsule composite coatings with polyvinyl alcohol (PVA), gelatin or methyl cellulose (MC) as shell materials were prepared by electrodeposition. The influence of shell materials on the corrosion resistance of the composite coatings in 0.1 M H2SO4 was investigated by means of electrochemical techniques, scanning electron microscopy (SEM), and energy dispersion spectrometry (EDS). The results show that the participation of microcapsules can enhance the corrosion resistance of the composite ...     

无溶剂环氧自流平地坪涂料的研制

报道了一种新型无溶剂型环氧自流平地坪涂料的制备。与现在使用的溶剂型地坪涂料相比较,该涂料具有绿色环保及自流平性。文章论述环氧树脂、活性稀释剂、填料、助剂等对涂料性能的影响。测定地坪涂料的干燥时间、附着力、耐冲击性、铅笔硬度、光泽、耐磨性、耐碱性、耐酸性、耐汽油性等性能,确定合理的涂料配方。结果表明该地坪涂料具有耐磨、耐压、抗冲击、耐化学腐蚀等优异性能。     

含氟碳聚丙烯酸酯乳液疏水涂层的研究

以丙烯酸六氟丁酯为疏水功能单体,与甲基丙烯酸甲酯、苯乙烯等单体共聚,合成了系列粒径不等、玻璃化转变温度(Tg)不同、核壳结构不同的含氟碳聚丙烯酸酯乳液,并测定了各自成膜后的接触角。将粒径不等、Tg不同的乳液复配、核壳结构不同的乳液复配,并测定了复配物成膜后的接触角,讨论了它们可能产生的二元协同作用。结果表明,含氟碳聚丙烯酸酯乳液疏水涂层可产生符合Wenzel方程的微纳米级别的粗糙面。通过SEM表征,观测到了这些微纳米粗糙面结构,其接触角超出了单组分含氟碳聚丙烯酸酯乳液涂层的接触角,最大水动态水接触角达到125.05°,静态水接触角达到130°;还观测到以大量保护胶为壳的核壳结构乳液在成膜时产生了核壳剥离自组装行为,同样产生了二元协同的粗糙面。     

无溶剂环氧自流平地坪涂料的研制

报道了一种新型无溶剂型环氧自流平地坪涂料的制备。与现在使用的溶剂型地坪涂料相比较，该涂料具有绿色环保及自流平性。文章论述环氧树脂、活性稀释剂、填料、助剂等对涂料性能的影响。测定地坪涂料的干燥时间、附着力、耐冲击性、铅笔硬度、光泽、耐磨性、耐碱性、耐酸性、耐汽油性等性能，确定合理的涂料配方。结果表明该地坪涂料具有耐磨、耐压、抗冲击、耐化学腐蚀等优异性能。     

Composition and hardness of mullite coatings formed with direct current power supply on LY12 aluminum alloy surface

The surface modification of aluminum and its alloys using plasma technology is increasingly being investigated, Thick ceramic coatings with high hardness on aluminum alloys can be prepared successfully using a micro-plasma oxidation （MPO） technique. In this work, the composition, microstructure and elemental distribution of ceramic coatings formed by MPO on LY 12 almnlnum alloy and its hardness are investigated using XRD, EPMA and microhardness instruments. The results show that the ceramic coatings consist of mullite,γ-Al2O3 and a lot of amorphous matter. The content of silicon in the coatings increases from interface to the coatings, however, the content of aluminum decreases along this direction. The maximum hardness of ceramic coatings is up to 9.2 GPa.     

水性氯磺化聚乙烯防腐蚀漆的研制

以氯磺化聚乙烯胶乳、水性环氧树脂为主要原料研制了水性氯磺化聚乙烯防腐蚀漆,可应用于现代化厂房的金属网架和化工管线以及化工设备等的防腐处理中.     

彩色滤光镜的制备和性能研究

研究了彩色滤光镜的混合膜料选择、膜系设计、膜层均匀性和镀膜工艺.该套滤光镜的截止区透射率小于4%,通带区的平均透射率大于65%.它用于各种彩色技术中滤光,色彩还原好,具有成本低廉、均匀性好、镀制简便和适合于大批量生产的特点.     

纳米材料在乳胶漆中的分散及其性能的研究

研究了纳米TiO2，纳米SiO2-x在乳胶漆中的分散性以及涂料的耐候性综合性能等．分析了涂料性能与纳米微粒的分散性能的关系．针对纳米微粒在涂料中的分散和贮存稳定性问题，采取将包覆过的纳米微粒用特殊的助剂处理，并采用合适的分散工艺，制备纳米复合涂料．研究结果表明，纳米微粒在涂料中的有效稳定分散和贮存是纳米复合涂料进一步产业化的关键，它对于纳米复合涂料性能的提高至关重要；质量分数为0.4%的纳米TiO2的乳胶漆具有较好的耐紫外老化性能和综合性能。     

等离子喷涂梯度涂层的显微组织结构和性能

针对低散热发动机主要部件铝活塞顶部制备热障涂层的需要，用等离子喷涂法在铝基体上制备出梯度涂层，对其性能与显微组织结构进行了研究．抗热震实验结果表明，梯度涂层具有较高的结合强度．金相显微观测结果表明，梯度热障层结构致密，由基体至涂层表面。形成5种无宏观结合界面的成分呈梯度变化的组织结构．     

Corrosion behaviors of zinc and Zn-Ni alloy compositionally modulated multilayer coatings

Zinc and Zn-Ni alloy compositionally modulated multilayer （CMM） coatings were electrodeposited from dual baths. The coated samples were evaluated in terms of surface appearance, surface and cross-sectional morphologies, as well as corrosion resistance. The results obtained from the salt spray test show that the zinc and Zn-Ni alloy CMM coatings are more corrosion-resistant than the monolithic coatings of zinc or Zn-Ni alloy alone with a similar thickness. The corrosion potential measurement and anodic polarisation tests were undertaken to examine the probable corrosion mechanisms of zinc and Zn-Ni alloy CMM coatings. Analysis on the micrographic features of zinc and Zn-Ni alloy CMM coatings after the corrosion test explains the probable reasons why the Zn-Ni/Zn CMM coatings have a better protective performance. Surface morphologies and compositional analysis of the remaining coating material of Zn-Ni alloy deposit after the corrosion test confirms the dezincification mechanism of the Zn-Ni alloy deposit during the corrosion process.     

Automatic brush-plating technology for component remanufacturing

An automatic brush-plating system was developed for component remanufacturing. With this system, Ni/nano-alumina composite coatings from an electrolyte containing 20 g/L nano-alumina particles were prepared.Microstructure, surface morphology, microhardness and wear resistance of automatically plated coatings and manu ally plated coatings were investigated comparatively. The results show that the automatically plated coatings are relatively dense and uniform and have lower friction coefficient of 0. 089 under lubricant condition, when compared with manually plated coatings with friction coefficient of 0. 14.     

Comparison of tribological properties for graphite coatings used for remanufacturing

To improve the solid lubricity on the worn surface of frictional-pairs, a convenient and simple brush-painting technique was utilized to prepare the solid lubrication graphite coatings. The bonding between the coatings and substrate is good. To examine the influence of the different graphite contents on the tribological properties of the graphite coatings, the comparison experiments were carried out on the ring-on-block friction tester. The tribological results show a change law of saddle-shape between the tribological properties of graphite coatings and graphite content. When the amount of graphite is up to 28 g, the tribological properties of graphite coating are the best. The excellent anti-friction of the graphite coating is associated with the close-packed hexagonal crystal structure of graphite.     

Comparison of tribological properties for graphite coatings used for remanufacturing

To improve the solid lubricity on the worn surface of frictional-pairs, a convenient and simple brushpainting technique was utilized to prepare the solid lubrication graphite coatings. The bonding between the coatings and substrate is good. To examine the influence of the different graphite contents on the tribological properties of the graphite coatings, the comparison experiments were carried out on the ring-on-block friction tester. The tribological results show a change law of saddle-shape between the tribological properties of graphite coatings and graphite content. When the amount of graphite is up to 28 g, the tribological properties of graphite coating are the best.The excellent anti-friction of the graphite coating is associated with the close-packed hexagonal crystal structure of graphite.     

Microstructure and properties of high emissivity coatings

A new coating on lining in industrial furnace for energy saving has been developed. Properties and microstructure of the coatings were revealed by emissivity instrument,X-ray diffraction (XRD),transmission electron microscope (TEM) and scanning electron microscope (SEM),respectively. The result indicates that the emissivity of coatings is higher than 0.90 and the thickness of coatings is about 200 μm. ZrO2,Cr2O3 and SiC in the coating benefit practical applications of coatings at high temperature with du-ra...