聚氨酯粉末涂料概论

简单介绍了聚氨酯粉末涂料的国内外发展状况,聚氨酯粉末涂料的组成及特点,重点阐述了聚氨酯粉末涂料的品种和制备,综述了影响聚氨酯粉末涂料性能的因素,最后对这种新型材料作了展望。     

聚氨酯粉末涂料用羟基聚酯树脂的合成

本文探讨了封闭型芳香族和脂肪族二异氰酸酯为固化剂的聚氨酯粉末涂料用羟基聚酯树脂的合成,催化剂及醇和酸对合成反应的影响。     

丙烯酸粉末涂料及树脂

介绍了溶液聚合法丙烯酸粉末涂料用树脂的制备及其特点，并对丙烯酸聚氨酯粉末涂料与其它类型的粉末涂料的耐老化性能作了对比，在对比的样品中丙烯酸聚氨酯具有最好的耐候性。     

高性能聚氨酯粉末涂料的研究

比较了不同聚氨酯粉末涂料固化剂的性能,考察了催化剂对胶化时间的影响,介绍了一种制造消光聚氨酯粉末涂料的方法,该方法所制得粉末涂料固化后涂层平整光滑、物化性能优异,可以调整出各种光泽的涂层,并且在生产过程中光泽比较稳定,重现好。     

聚氨酯粉末涂料在摩托车发动机箱体涂装中的应用

概述了非溶剂型涂料发展趋势及聚氨酯粉末涂料的组成、固化原理、物化性能和主要技术指标。介绍了聚氨酯粉末涂料在摩托车发动机铝合金箱体涂装中的应用及涂装工艺。     

粉末涂料

200901024 电绝缘性和耐电解性好的环氧树脂粉末涂料；200901025 耐热粉末涂料；200901026 聚氨酯粉末涂料用固化剂；200901027表面平整光滑性、光泽和对底材的附着力优异的粉末涂料；200901028 可形成光滑涂膜不含微凝胶的自由基固化粉末涂料的制备……     

热固性粉末涂料的研究进展

首先对热固性粉末涂料进行分类,按照主要成膜物质的不同可以分为环氧树脂、聚酯树脂、聚氨酯、丙烯酸树脂、氟树脂、混合型树脂及紫外光固化粉末涂料,详细介绍了这些热固性粉末涂料优异的性能以及存在的不足,并简要阐述了对于这些问题相关学者对此的研究;然后粗略总结了粉末涂料的制备方法和影响粉末涂料特性的因素;最后对热固性粉末涂料的发展前景进行了展望。     

粉末涂料

可形成对金属底材附着好、具有耐候平整表面的涂膜的乙烯聚合物粉末涂料组合物;含支化聚酯的粉末涂料组合物;含丙烯酸封端的聚酯-聚氨酯的UV固化粉末涂料组合物;     

加氢法新戊二醇技术经济分析

新戊二醇在工业上的应用,近年来已有较大发展。它作为一种原料,主要用于生产各类树脂,如丙烯酸树脂、聚酯树脂、聚氨酯树脂、醇酸树脂和聚碳酸酯树脂等,再进而生产粉末涂料和高固体份涂料,其他的应用领域还有增塑剂、合成润滑油、合成     

过氧化物固化的不饱和聚酯粉末涂料的研制

合成了端基封闭型柔韧性不饱和聚酯树脂，研制了相应的过氧化物固化的不饱和聚酯粉末涂料，讨论了树脂合成及固化对粉末涂料的影响，保持了粉末涂料的装饰性能及耐候性能，改善了粉末涂料的柔韧性能。     

锌粉和有机硅对聚氨酯涂层耐蚀性和热性能的影响

通过浸泡腐蚀和高温烘烤,以涂层的冲击强度为依据,研究了不同锌粉含量的聚氨酯涂层在10%(质量分数,下同)HCl、10%NaOH和20%NaCl溶液中的耐腐蚀性以及不同有机硅添加量的涂层在120℃下的耐热性.通过热重分析(TG-DSC),比较了改性前后聚氨酯涂料的热稳定性,测试了涂层的综合性能.结果表明,含锌量为83%的...     

Al/ZnS涂层织物的红外发射性能

以片状Al粉为金属颜料,加入ZnS、Na2SiO4、羧甲基纤维素钠和不同粘合剂制备低红外发射率涂料。将涂料涂覆在铝板上,比较含4种不同粘合剂涂层的发射率,研究粘合剂对涂层红外发射率的影响。将涂料涂覆在织物上,测量涂层的表观形态,分析工艺处方、织物种类等因素对织物涂层发射率的影响。油性聚氨酯粘合剂涂层的发射率最低,随着Al和ZnS含量的增加,织物涂层发射率逐渐降低,且不同织物基质上的涂层红外发射率不同。当使用油性聚氨酯为粘合剂,铝粉质量分数为35%～40%,ZnS质量分数为2%时,涤纶织物涂层发射率为0.69。     

码头钢管桩重防腐涂料的应用

介绍了环氧粉末涂料、聚氨酯涂料、改性环氧玻璃鳞片涂料及聚酯玻璃鳞片涂料在码头钢管桩重防腐体系中的应用。     

Surface properties of polyurethane powder lacquers modified with polysiloxane‐methacrylic core‐shell nanoparticles

Non‐ and core‐shell nanoparticles‐containing polyurethane‐based powder coating systems, crosslinked with allophanate bonds containing polyisocyanates were examined. The surface structure of the powder coatings were investigated with a confocal microscopy and polarized optical microscopy (POM) using reflected light. The three‐dimensional surface topography and the values of surface roughness were determined. The surface structure was correlated with the chemical structure of the coatings and macroscopic surface behavior: surface free energy and gloss. These experimental results led to a better understanding of the development of surface topography and morphology and provide valuable information for the development of new polyurethane powder coating systems. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

New resin systems for high performance waterborne coatings

Restrictions on the emission of solvents have led to the search for environment-friendly coatings. Waterborne systems are an alternative to high solids and powder coatings. New single-component polyurethane dispersions are suitable for replacing many standard systems. A new generation of waterborne two-component polyurethane systems may be used for applications where high performance is expected.     

绿色环保涂料的发展方向

指出绿色环保涂料的发展方向是水性化、高固体份化和粉末涂料,介绍了水性涂料、粉末涂料和高固体份涂料等三种绿色环保涂料的特点、制备方法和应用,重点介绍了水性环氧树脂涂料、水性聚氨酯涂料、水性光固化涂料。     

Accelerated weathering and chemical resistance of polyurethane powder coatings

A study of the weathering mechanism of innovative polyurethane powder coatings has been performed. UV-B irradiation and condensation cycle accelerated tests were carried out on two different polyurethane powder coating formulations for outdoor applications. Using Fourier transform infrared spectroscopy and microscope observation, it was possible to analyze the photochemical and morphological modifications. In addition, the color and gloss changes were measured. Organic coatings are often in contact with solvents in particular during cleaning actions. The chemical resistance was then studied considering the evolution of the corrosion barrier property of the coating as a function of the solvent contact time. Electrochemical impedance spectroscopy measurements were carried out. Methylethylketone (polar) and xylene (apolar) were considered as representative solvents. Due to the strong polarity, the first solvent showed a strong interaction with the hydrogen bonds between the polyurethane chains causing the solvent uptake. The amount of solvent uptake depends on the coating chains rigidity caused by the different polyester resin monomers. The apolar xylene presented no significant interaction with the coatings.     

有机氟涂料研究新动向

综述了国内外有机氟树脂涂料及有机氟改性的丙烯酸树脂、聚氨酯树脂、环氧树脂、有机硅树脂等涂料的研究与应用的新进展，介绍了水性氟涂料、高固体分涂料、粉末涂料、超耐候氟涂料等几种环保型、高性能的新型氟涂料。