高分子材料专业涂料课程教学初探

根据涂料行业发展对人才的需求，提出了高校讲授涂料课程的意义，介绍了涂料课程的特点，提出了高分子材料专业讲授涂料课程的内容，以及应采用的教学方法和学时安排。     

丙烯酸酯接枝炭黑无皂水性涂料的性能研究

旋转粘度计研究了丙烯酸酯接枝炭黑无皂水性涂料的流变性能，并考察了着色涂料的冻融及贮存稳定性。接枝炭黑争散于无皂水性涂料中形成的着色涂料具有良好的综合性能。     

玩具用涂料新标准10月1日起生效

随着玩具行业的壮大和产品质量的提高，全国涂料和颜料标准化技术委员会提出了玩具用涂料强制标准GB24613—2009“玩具用涂料中有害物质限量”。本标准适用于各类玩具用涂料，并规定了玩具用涂料中对人体和环境有害的物质容许限量的要求、试验方法、检验规则和包装标志等内容。这一强制性标准将于2010年10月1日生效，为玩具生产商提供涂料的供应商应确保其产品符合这一标准。     

涂料行业公布水性（环氧）产品标准

《ISO14020国际标准配套涂料技术标准》正式公布，该标准是由国家“十五”科技攻关项《ISO14020国际标准》课题组，将有关的国际标准“中国化”之后的研究成果，主要针对建筑用水性环氧涂料和溶剂性涂料作出技术规范，将在国内涂料行业内推行。     

石墨炉原子吸收光谱法测定涂料中的铅

采用干灰法消化涂料样品，建立了测定涂料中铅含量的石墨炉原子吸收光谱法。讨论了灰化温度、原子化温度对测定铅的影响。铅的浓度在0．6～3．0μg／L范围内符合比尔定律，相关系数r=0．9996，涂料样品测定结果的RSD为1．3％，加标回收率为99．2％～102．1％。     

有机硅耐磨透明涂料

详细总结了构成有机硅耐磨涂料的主要原料，无机溶胶添加剂、溶剂及其他助剂，对兼有防雾性、可染色性、抗静电性、紫外吸收性的耐磨涂料进行了介绍，给出了ＪＤ涂覆液的制备及涂层的性能。     

双组分水性环氧树脂涂料

简述了双组分水性环氧树脂涂料的特点及其用途，分别介绍了水性环氧树脂乳液和水性环氧固化剂的制备方法、双组分水性环氧树脂涂料的分类、混合体系的固化成膜机理和适用期的判断。最后给出了对水性环氧树脂涂料进行配方设计时应考虑的因素。     

稀土超长余辉材料及其涂料的研究

以碳酸锶、氧化铝、氧化铕和氧化镝为原料，用高温固相反应法合成了稀土超长余辉发光材料SrAl2O4：Eu^2 ,Dy^3 。测试了该发光材料的激发光谱、发射光谱、余辉亮度及余辉时间，激发光谱主峰分别位于320和360nm处，激发波长的范围较宽，从紫外到可见光区均可激发该发光材料。发射光谱的主峰位于520nm，发光颜色为黄绿色，余辉可达16h以上。解释了超长余辉发光材料的发光机制。以苯丙乳液为成膜物，添加适量的发光粉及适当的助剂研制出一种超长余辉发光涂料。确定出了该涂料的最佳配方，测定了涂料的各种性能，并对影响涂料性能的主要因素进行了探讨。     

金属离子络合交联丙烯酸酯共聚物无皂水溶胶涂料 Ⅱ.Zn(NH_3)_4~(2 )交联无皂水性涂料的性能

金属离子络合交联丙烯酸酯共聚物无皂水溶胶涂料Ⅱ．Ｚｎ（ＮＨ３）２＋４交联无皂水性涂料的性能杨立群谢志明李卓美＊（中山大学高分子研究所广州５１０２７５）关键词交联丙烯酸酯共聚物，无皂水性涂料，流变性，耐热性，硬度１９９７－０６－１６收稿，１９９７－１２...     

聚有机硅氧烷—聚丙烯酸酯IPN涂料的合成

研究聚有机硅氧烷－聚丙烯酸酯互穿聚合物网络（ＩＰＮ）涂料的合成，并用ＩＲ、ＴＧ、ＳＥＭ、ＧＰＣ及性能测试等方法进行分析．结果表明，该涂料可用作摩岩石刻防风化材料，具有无色透明、硬度高、附着力强、耐酸沉降、耐热老化性好及有优良的透水气性，可避免使用单一有机硅涂料或丙烯酸系涂料造成的“保护性”破坏     

应用于汽车修补的水性双组分聚氨酯涂料

回顾了汽车修补漆的历史,重点对应用于汽车修补漆的水性双组分聚氨酯涂料进行了综述,介绍了各种含羟基组分和异氰酸酯组分的组成、合成方法及其性能指标,指出该类涂料是一种非常具有发展前景的汽车修补漆。     

水性防污涂料的研究进展

海洋污损生物是海洋资源开发首先要面对的问题。防污涂料是防除海洋污损生物的关键材料。传统的防污涂料虽然发展成熟,但以油性溶剂为介质,存在挥发性有机物(VOC)排放过高、环境污染严重的问题。不释放VOC的水性涂料符合绿色无污染的环保要求,是防污材料领域研究的热点。本文对最重要的四种水性防污涂料(污损释放型水性低表面能防污涂料、自抛光型水性防污涂料、污损阻抗型水凝胶海洋防污涂料、强碱释放型水性硅酸盐防污涂料)从防污机理、制备方法和存在的问题等几个方面进行了综述,并对水性防污涂料的发展趋势进行了展望。     

Examination of wear mechanisms of hard coatings

PVD-CrN and -TiN coatings are abraded in a wear test equipment which simulates the sliding-rolling friction of a screw rotor used in screw compressors. The coatings show significant differences concerning their durabilities. The worn-out coatings as well as the debris particles produced by abrasion are analyzed by means of X-ray induced photoelectron spectroscopy and Auger electron spectroscopy. The failure mechanism of TiN coatings can be explained by spalling off small debris particles, whereas the failure mechanism of CrN coatings has to be attributed to tribooxidation, because in this case the analyzed particles exclusively consist of chromium oxide. Nevertheless, CrN coatings show the lowest wear rate. When changing the environment (inert atmosphere or water lubrication) in the test equipment, the tribooxidation of CrN can be reduced or totally stopped, but a decrease in wear rate cannot be achieved. In this case tribooxidation leads to a better wear resistance.     

Multifunctional cold spray coatings for biological and biomedical applications: A review

A variety of coating techniques are available for medical devices to be tailored with surface properties aimed at optimizing their performance in biological environments. Cold spray, as a member of the thermal spray family, is now being exploited to efficiently deposit micro- to nanometer sized metallic or non-metallic particles on surgical implants, medical devices and surfaces in the healthcare environment to create functional coatings. Cold spray has attracted attention in the context of biomedical applications due to the fact that multiple materials can be combined easily at the surface of these devices, and that oxygen-sensitive and heat-sensitive organic molecules, including bioactive compounds, can be incorporated in these coatings due to the relatively low temperatures used in the process. The ability to maintain material and chemical properties and the ability to create functional coatings make the cold spray process particularly suitable for applications in the MedTech industry sector.This review explores the fabrication of cold spray coatings including the types of materials that have been used for biomedical purposes, provides a detailed analysis of the factors affecting cold spray coating performance, and gives an overview over the most recent developments related to the technology. Cold spray coatings that have been used until this point in time in biomedical applications can be broadly classified as biocompatible coatings, anti-infective coatings, anti-corrosive coatings, and wear-resistant coatings. In addition, this review discusses how these applications can be broadened, for example by providing antiviral effect against coronavirus (COVID-19). While we highlight examples for multifunctional cold spray coatings, we also explore the current challenges and opportunities for cold spray coatings in the biomedical field and predict likely future developments.     

In vitro corrosion resistance and cytocompatibility of minerals substituted apatite/biopolymers duplex coatings on anodized Ti for orthopedic implant applications

In this work, strategies for the formation of duplex coatings with enhanced bioactivity, mechanical properties and corrosion resistance have been focused. TiO₂ arrays were fabricated on Ti alloy were carried out in a single step using suitable electrolyte by anodization method. Here, we have synthesized a novel bioactive material, minerals incorporated Hydroxyapatite (La/Tb-HAP)-chitosan-casein duplex coatings on anodized Ti via electrodeposition method. The fabricated novel composite coatings were characterized by FT-IR, XRD, FESEM and EDAX analyses. Also, the mechanical properties of duplex coatings were scrutinized by Dermitron thickness and microhardness tester. The corrosion resistance of the as-developed duplex coatings was studied by electrochemical techniques using Ringers solution as the electrolyte. In addition, the antibacterial activity, cell viability, live and dead staining were executed to substantiate the biocompatibility of TNT/CS-CA@M-HAP duplex coatings. From the overall summary of this work, it is proved that the resultant CS-CA@M-HAP coatings on TNT exhibit excellent bioactivity and improved corrosion resistance over pure Ti and serve as a potential candidate for orthopedic applications.     

IR-Spectroscopic investigations on phosphated galvanized steel

Hopeite-type phosphate coatings in which zinc is replaced by other metals like nickel, manganese and magnesium are of great interest as conversion coatings on galvanized steel in the automotive and appliance industries. The analytical characterization of such coatings produced in special processes is not possible by XRD because the different types of hopeite are isomorphic. In this paper it is shown that the kind of metal substitution is responsible for certain specific features in the infrared reflection spectra. Furthermore the structural changes caused by dehydration due to heating of the coatings were studied and differences in the thermal stability of the different coatings thus could be observed.     

超疏水涂层防覆冰机理及制备

结构物表面严重覆冰有时会威胁人们的生命财产安全,影响经济社会的平稳运行。超疏水涂层具有超大接触角、低滚动角的特性,在防覆冰领域有很好的应用前景。本文重点总结了超疏水涂层防覆冰机理的相关研究结果,并简单综述了聚合物-微粒复合材料类、特殊表面结构类两种典型超疏水型防覆冰涂层的研究进展,指出了目前在超疏水型防覆冰涂层研究中存在的不足,并对其发展趋势进行了展望。     

Adhesion of Sol-Gel-Derived Organic-Inorganic Hybrid Coatings on Polyester

Inorganic coatings, including metal-oxide coatings, provide polymer surfaces with excellent abrasion and wear resistance, and protection against environmental degradation. However, one drawback associated with the incorporation of such ceramic coatings to polymeric materials is the adhesion characteristic at the ceramic-polymer interface. In this paper, two strategies for adhesion enhancement of ceramic coatings on polymer substrates were proposed: (1) formation of chemical bonds through surface condensation reactions, and (2) development of interlocked ceramic and polymeric networks through diffusion of alkoxide precursors. The current research has focused on the adhesion of sol-gel-derived organic-inorganic hybrid coatings on polyester by forming chemical bonds between the polymer substrate and the hybrid coatings, as well as developing interlocked polymeric and inorganic networks at the interface. Contact angle, wettability tests, and chemicalanalysis were done to verify the effectiveness of the adhesion of organic-inorganic hybrid coatings on polyester substrates. In addition, dry and wet thermal cycling tests were done to analyze the adhesion behavior of the hybrid coatings on polyester, followed by microscopy examination. It was found that although both approaches resulted in excellent adhesion of hybrid coatings on polyester, adhesion with interlocked ceramic and polymeric networks was far better than that with chemical bonds in the presence of water at elevated temperatures.     

Preparation,Microstructure and Photocatalytic Activity of the Porous TiO2 Anatase Coating by Sol-Gel Processing

In this study the porous TiO² anatase coatings are prepared from alkoxide solutions containing polyethylene glycol (PEG) by a dip-coating technique. The effects of PEG addition to the precursor solution on the photocatalytic activity and microstructure of the resultant coatings are studied. The larger amount and the larger molecular weight of PEG, the larger size and more pores produced in the resultant coatings on the decomposition of PEG during heat-treatment. The adsorbed hydroxyl content of such porous coatings is found to increase due to the larger size and more pores in the coatings. However, the transmittance of the coatings decreases due to the scattering by the larger size and more pores. Photocatalytic degradation experiments show that organophosphorous insecticide, dimethyl-2,2-dichlorovinyl phosphate (DDVP), was efficiently degraded in the presence of the porous TiO₂ coatings by exposing the DDVP solution to sunlight. Photocatalytic degradation rate was related to the adsorbed hydroxyl content, transmittance and morphology of the resultant coatings.     

Quinine doped hybrid sol–gel coatings for wave guiding and optical applications

Pure and quinine doped silica coatings have been prepared over sodalime glasses. The coatings were consolidated at low temperature (range 60–180 °C) preserving optical activity of quinine molecule. We designed a device to test the guiding properties of the coatings. We confirmed with this device that light injected in pure silica coatings is guided over distances of meters while quinine presence induces isotropic photoluminescence. With the combined use of both type of coatings, it is possible to design light guiding devices and illuminate regions in glass elements without electronic circuits.