国内外涂料工业现状及发展趋势(二)--中国涂料工业现状及发展思路

分析了中国涂料工业的发展现状以及面临的挑战。对我国各种功能型涂料———防火涂料、地坪涂料、氟碳涂料、纳米复合涂料、伪装涂料、船舶防污涂料、重防腐涂料、卷材涂料、水性聚氨酯涂料和隔热涂料等的研究现状进行了概述。提出了中国涂料工业的发展思路。     

国内外涂料工业现状及发展趋势(一)--世界涂料工业现状及发展趋势

概述了国外涂料工业现状。对世界范围内的水性涂料、粉末涂料、无溶剂型涂料和高固体份涂料等低污染、无公害涂料和环境贡献型涂料、功能型涂料(包括氟碳树脂涂料、喷涂聚脲弹性体、有机-无机复合涂料、高装饰涂料、隐身涂料和智能型涂料)等方面的应用与研究概况以及纳米材料在涂料中的应用进行了总结,指出了今后的发展趋势。     

金融危机中的中国涂料工业及其技术发展趋势(三)

文章的第3部分综述了国内汽车涂料、塑料涂料、卷材涂料、航空涂料等工业涂料以及道路标线涂料、防火涂料、隔热保温涂料、防涂鸦涂料、海洋防污涂料等特种涂料的发展状况.     

涂料化学与工艺学

本书系统地介绍了涂料化学和涂料工艺学知识。重点介绍了涂料的基本组成和作用,涂料的化学基础,涂料用树脂的合成原理、原料、工艺和实例,涂料用颜填料、助剂、涂料配方原理,涂料的涂装工艺,涂膜的形成机理,涂料的工业应用,绿色环保型涂料,以及涂料的生产工艺及设备。     

有机硅耐高温涂料的研究进展

介绍了耐高温涂料的作用和有机硅树脂作为耐高温涂料成膜物的优越性,对有机硅耐高温涂料研究进展进行了综述,包括纯有机硅涂料、无机-有机复合涂料和改性有机硅涂料等,讨论了各种涂料的优劣性。并对有机硅耐高温涂料的发展方向进行了展望。     

水性涂料的最新研究进展

回顾了水性涂料的发展历史,介绍了现代水性涂料工业的发展现状,以及有关限制涂料中挥发性有机化合物(VOC)排放法规.着重讨论了,几类水性涂料(如水性聚氨酯涂料、水性丙烯酸酯涂料、水性环氧树脂涂料及水性紫外光固化涂料)的研究进展,并指出了水性涂料的研究方向.     

不饱和聚酯树脂涂料的研究进展

不饱和聚酯树脂(UPR)涂料是发展最早的涂料品种之一,将UPR作为涂料的成膜树脂不但涂膜性能优良而且成本低廉,因此UPR涂料在涂料工业中应用广泛。文章就现有各种UPR涂料的研究进展进行回顾。将UPR涂料分为气干性UPR涂料、防污UPR涂料、防火UPR涂料、防腐UPR涂料、绝缘UPR涂料以及低(零)挥发性有机化合物(VOC)排放UPR涂料。分别阐述了各种涂料的特点及其发展现状,简要叙述了涂料的作用机理,并对UPR涂料的未来发展趋势和研究方向作出了展望。     

涂料工业的新进展——绿色环保型

回顾了涂料工业的发展历史,介绍了现代涂料工业的发展现状。主要介绍了几种绿色环保型涂料的研究进展,如无溶剂涂料、粉末涂料、辐射固化涂料、水性涂料、高固体分涂料,指出环境友好涂料的研究应向水性化、粉末化、高固体分化、高性能化和功能化方向发展,并对水陛涂料、粉末涂料、高固体分涂料的发展提出了建议。     

涂料工业的新进展——绿色环保型

回顾了涂料工业的发展历史,介绍了现代涂料工业的发展现状。主要介绍了几种绿色环保型涂料的研究进展,如无溶剂涂料、粉末涂料、辐射固化涂料、水性涂料、高固体分涂料,指出环境友好涂料的研究应向水性化、粉末化、高固体分化、高性能化和功能化方向发展,并对水陛涂料、粉末涂料、高固体分涂料的发展提出了建议。     

新型功能性涂料的研究进展

介绍了一些新型功能性涂料,如,耐指纹涂料、红外辐射节能涂料、防雾涂料、可剥离涂料、降解甲醛涂料等。并对这些涂料的制备和性能进行了综述。     

Properties of powder coatings in load carrying construction

The present study describes the mechanical behavior of powder coatings used under very high compressive loads in clamping force joints. Carboxyl functional polyester powder coatings cured with hydroxyl functional β-hydroxyalkylamides with variations in coating thickness and amount and type of filler, have been studied. The coatings were subjected to conventional tests for coatings and polymers and also to specially designed tests developed to study the behavior of powder coatings in clamping force joints. The specially designed tests were used to study the coatings under compressive loads, and the relation between the results from these test methods and from conventional tests is discussed. The results show the importance of coating thickness in order to achieve the desired mechanical properties of a coating when used under high compressive loads. These loads put high demands on the stability of the coating, and the defects must be kept to a minimum. Increased thickness will give rise to more defects in the coating, especially voids and blisters due to the evaporation of water formed during the curing of the polyester powder coating. The surface roughness of the coating is also affected by the coating thickness, but the main influence originates from the type and amount of filler used. A rough surface will give rise to stress concentrations and increased plastic deformations in the coating, impairing the properties of the clamping force joint.     

以次磷酸钠为还原剂的化学镀铜

研究了以次磷酸钠为还原剂的化学镀铜过程。确立了以硫酸铜为主盐,次磷酸钠为还原剂,乙二胺四乙酸二钠和柠檬酸钠为混合配位剂的碱性还原镀铜体系。在铸铁基体上实现了铜的连续自催化沉积,获得了较光亮、红黄色的铜镀层。     

Al-B2O3-CeO2-粉煤灰复合增强涂层成分设计及冲蚀磨损分析

为了提高粉煤灰作为增强材料在金属基复合材料中的应用和性能,通过热力学分析和正交优化试验确定Al-B₂O₃-CeO₂-粉煤灰复合增强涂层各成分之间可能发生的反应及最佳配方比例,采用等离子喷涂在ZG310-570基体制备了粉煤灰复合增强涂层,分析了粉煤灰复合增强涂层的表面形貌、物相和冲蚀磨损性能。结果发现,热力学分析和正交优化试验表明Al、B₂O₃、CeO₂和粉煤灰之间能发生固相反应,粉煤灰复合增强涂层配方最佳比例质量分数为粉煤灰55%、B₂O₃20%、Al20%、CeO₂5%;粉煤灰复合增强涂层呈凹凸不平的片层状结构,致密性好,存在纵向裂纹、未充分融化颗粒和孔隙;X射线分析表明粉煤灰复合增强涂层有Al₂O₃、CeB₆、2MgO·SiO₂、3CaO·B₂O₃等新相生成,与热力学分析结果一致;在一定冲蚀时间和冲蚀角度下,不同冲蚀转速时ZG310-570基体表面粉煤灰复合增强涂层的相对耐冲蚀磨损性能比基体分别至少提高了20.41倍、22.43倍和23.17倍。     

氟树脂性能与加工应用(续17)

分别叙述了PTFE涂层、PTFE纤维和PTFE浇涛膜的性能和应用,制备原理、方法和工艺.介绍了聚四氟乙烯填充树脂的特性、用途和填充料的种类,分别叙述了PTFE悬浮树脂、PTFE分散树脂和PTFE分散液与填充料的混合工艺、方法,介绍了PTFE填充树脂与弹性体的复合材料.     

Formation and characteristics of Al−Zn hydrotalcite coatings on galvanized steel

In this study, a process for depositing hydrotalcite (HT) coatings on galvanized steel was developed and the resulting coatings were characterized. Results showed that coatings formed spontaneously on galvanized surfaces upon exposure to ambient temperature alkaline aluminate solutions. Anodic polarization and electrochemical impedance spectroscopy experiments showed clear evidence of surface passivation. Scanning electron microscopy showed the formation of a continuous and conformal surface film comprised on a compact mass of crystallites. X-ray diffraction confirmed that the coating contained an Al−Zn hydrotalcite compound. Coating formation was enhanced by oxidizer and ammonium salt additions. Coatings formed by using best practices were deposited in less than 10 minutes and demonstrated good surface coverage and good organic coating adhesion. HT coatings formed by using best practices showed excellent organic coating adhesion compared to zinc phosphate control coatings. In salt spray testing, the presence of a hydrotalcite conversion coating under an epoxy neat resin was found to delay the onset of red rusting compared to control samples that were epoxy coated, but not conversion coated.     

铸铝表面绿色环保化学处理新工艺

使用脱氧/除斑剂代替传统的硝酸、氢氟酸酸洗出光工艺对压铸铝合金表面进行处理,与传统工艺和简化工艺进行了对比.结果发现,采用由除油、脱氧/除斑荆除灰活化、钝化处理组成的新工艺不仅能在压铸铝合金表面获得色彩均匀的转化膜层,而且消除了传统工艺在生产过程中产生的污染物.新工艺所得的转化膜可通过96 h的盐雾试验,环保节能,有望在压铸铝合金表面处理中得到广泛应用.     

Cerium acetate-modified aminopropylsilane triol: A precursor of corrosion-preventing coating for aluminum-finned condensers

A poly-acetamide-acetoxyl methyl-propylsiloxane (PAAMPS) polymer containing a cerium (Ce) oxide-derivative was synthesized through three spontaneous reactions: condensation, amidation, and acetoxylation. The PAAMPS synthesizing took place between the Ce acetate dopant and aminopropylsilane triol (APST) as the film-forming precursor aqueous solution at 150°C. PAAMPS was evaluated for use as a corrosion-preventing coating for air-cooled condensers consisting of two metal components: aluminum fins and carbon steel tube. The key factors to ensuring the maximum performance of the PAAMPS/Ce oxide coating system in mitigating the corrosion of both aluminum and steel included (1) minimizing the content of non-reacted water-soluble APST and Ce acetate remaining in the coating, (2) lowering the susceptibility of the coating’s surface to moisture, (3) precipitating a passive Ce³⁺ oxide (Ce₂O₃) film insensitive to Cl dissolution over the metal’s surfaces, and (4) possessing excellent adhesion to the metal’s surfaces. The combination of these factors considerably decreased the rate of the cathodic oxygen reduction reaction at the corrosion site of the metals. In fact, the corrosion rate, measured in milli-inches per year (mpy), of bare steel was reduced more than one order of magnitude by applying this coating. Correspondingly, the coating extended the useful lifetime of steel exposed in a salt-fog chamber at 35°C from only ∼10 hr to ∼768 hr. Furthermore, this coating system far better protected an aluminum substrate from the corrosion than it did one of steel. Even a very thin nanoscale coating film deposited on the aluminum’s surfaces reduced the corrosion rate, (mpy), by nearly two orders of magnitude over that of the bare aluminum. Also, the salt-spray resistance of aluminum panels covered by this nanoscale film was strikingly extended to more than 1440 hr, compared with ∼40 hr for bare aluminum. This program report, issued by the DOE Office of Geothermal Technologies, was performed under the auspices of the U.S. Department of Energy, Washington, D.C., under Contract No. DE-AC02-98CH10866.     

Overblasting effects on surface properties of low-carbon steel

The influence of overblasting on surface properties of low-carbon steel was investigated. In detail, surface roughness, contact angle, Vickers-hardness, degree of surface contamination, and pull-off strength were evaluated. It was shown that overblasting had notable effects on the surface properties. Most importantly, the surface roughness was significantly reduced, and the microhardness of the substrate increased. Also, overblasting increased surface wettability. The influence on the pull-off strength of applied coating systems was only marginal.     

舰船新型涂料的研究进展

介绍了新型船舶涂料的种类。综述了船舶用防污涂料、船体防锈涂料和舰用特种功能涂料包括吸波涂料、纳米隐身涂料和其它新型涂料(防滑涂层、潜艇特征信号控制涂层、新型光触媒涂料、新型室温可逆变色涂料、新型热防护涂料、热障涂层和溶胶-凝胶涂层等)的性能和研究状况。指出了其发展趋势。