共查询到20条相似文献,搜索用时 125 毫秒
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聚氨酯涂料以其高光泽、高丰满度、高硬度、高装饰性的优异综合性能,而广泛应用于较多领域。根据聚氨酯涂料的品种、结构类型及其应用领域,阐述了聚氨酯涂料的性能特点,介绍了聚氨酯涂料的典型应用实例;论述了聚氨酯涂料单体、预聚物以及环保型聚氨酯涂料的研发进展;提出了聚氨酯涂料发展趋势。 相似文献
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聚氨酯涂料以其高光泽、高丰满度、高硬度、高装饰性等优异的综合性能,而广泛应用于各个领域。介绍了聚氨酯涂料的性能特点及典型应用案例。综述了聚氨酯涂料的单体和预聚物,以及环保型聚氨酯涂料的研发进展。 相似文献
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环保型聚氨酯涂料的研究进展 总被引:8,自引:0,他引:8
综述了环保型聚氨酯固化剂品种、性能与应用,阐述了水性聚氨酯涂料分类、制备方法和改性研究以及聚氨酯粉末涂料和有机硅聚氨酯功能涂料的改性研究进展。讨论了聚氨酯固化剂中游离单体脱除的工艺和方法,建议采用聚合与高效分离技术相结合的方法降低聚氨酯固化剂中残留游离异氰酸酯单体含量。指出聚氨酯涂料的发展趋势为进一步完善高固体含量羟基树脂的制备技术,发展无异氰酸酯基的潮固化聚氨酯涂料,充分利用可再生的植物油制备无溶剂聚氨酯涂料。 相似文献
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聚氨酯涂料的应用发展现状 总被引:5,自引:0,他引:5
聚氨酯涂料以其优异的粘结性,耐磨擦性、光泽度高等优良性能在涂料行业中占有非常重要的位置,深受市场和广大消费者亲睐。尤其是近几年来的新型聚氨酯环保材料和特种聚氨酯材料的问世和相继投入市场,更是给聚氨酯树脂及涂料注入了新的活力和希望。从聚氨酯涂料的组成特点,组成,种类等各个方面介绍了聚氨酯树脂在涂料中的作用和应用。针对聚氨酯涂料在国内市场的应用和发展现状,对其未来的发展作了简单的展望。 相似文献
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Vilas D. Athawale Ramakant V. Nimbalkar 《Journal of the American Oil Chemists' Society》2011,88(2):159-185
Polyurethane dispersions are gaining in importance due to their environmentally friendly coating system, versatile coating
properties and ease of application. An enormous amount of research is focused on waterborne coatings such as waterborne alkyds,
water-reducible alkyds, alkyd–acrylic hybrids, oil modified polyurethane dispersions and their composite latexes. This review
gives a comprehensive compilation of recent studies on the synthesis and applications of waterborne coatings. The article
specifically covers all of the research work carried out in the field of waterborne alkyd–acrylics, polyurethane dispersions
and their hybrid latexes systematically. 相似文献
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聚氨酯防水涂料是经过化学反应之后固化呈橡胶状的高弹性防水涂料,具有优良的可塑性,备受国际防水界的喜爱。是我国重点发展的防水材料之一,但是我国聚氨酯防水涂料里面含有大量挥发性有毒成份和有机溶剂,并且常用的固化剂MOCA被疑为致癌物质,对环境的污染非常严重。该文综述了聚氨酯防水涂料在我国的发展历史和未来前景,并阐述了自己对聚氨酯防水涂料未来发展的分析。 相似文献
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Lixia Li Bing Cao Yumeng Sun Wenping Yi Xiaohui Ni 《Polymer-Plastics Technology and Engineering》2019,58(1):77-82
Polyurethane composite coatings on urea granules were prepared by SBA-15 mesoporous silica (in as-synthesized and calcined forms) as a pseudo-crosslinker without any other chain extenders. The calcination of mesoporous silica leaded to reduction of hydroxyl groups and increase of mesopores. The composite coating containing calcined SBA-15 showed enhanced controlled release properties compared with the other two coatings. At the loading content of 1 wt%, the initial release rate and release duration of urea coated by polyurethane/calcined SBA-15 composite were 0.08% and 83 d, respectively. It is shown that the calcination played an important role in controlling the properties of composite coating. 相似文献
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腐蚀已经成为危害世界经济,构成重大事故的罪魁祸首之一,因此如何解决腐蚀的问题是我们目前必须要攻克的难关。水性聚氨酯涂料作为一种防腐材料,无毒无味,安全环保,但防腐性能依然需要提高,为了进一步提高产品的防腐性能,研究人员使用不同改性方法制备功能各异的水性聚氨酯防腐涂料。本文主要介绍了通过纳米材料、自修复等几种较常用的改性方法对水性聚氨酯涂料改性,并对未来的研究方向和发展趋势进行了展望。 相似文献
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Mariëlle Wouters Joyce van Zanten Frank Huijs Teun Vereijken 《Journal of Coatings Technology and Research》2005,2(6):435-443
Polyurethane coatings with different network composition were prepared from an oligomeri diol, a diisocyanate, and a low molecular
weight triol. The glass transition temperature of the network was tuned by the ratio of diol and triol and the composition
(aromatic or aliphatic) of the diisocyanate. All coatings were studied for their bulk properties as well as their surface
properties. It was found that by the addition of a fluorinated additive the surface free energy of the coating was lowered
by approximately 15 mN·m−1, leaving the bulk properties intact. It was also shown that these polyurethane coatings are able to adapt their surface free
energy in a reversible manner when exposed to water. The magnitude and rate of surface rearrangement is strongly dependent
on the network density of the coating. 相似文献
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聚氨酯由硬段和软段交替组成,具有良好的物理和机械性能,在硅胶按键保护涂料方面的应用越来越广泛.随着对涂层耐磨性能要求的提高,开发一种针对于硅胶按键表面保护的高耐磨聚氨酯树脂变得十分关键.用聚酯二元醇(相对分子质量580)、乙二醇(EG)、三羟甲基丙烷(TMP)、异佛尔酮二异氰酸酯(IPDI)为原料合成了端羟基聚氨酯预聚物,使用封闭型异氰酸酯作为固化剂交联固化制备聚氨酯薄膜和涂层.研究了聚氨酯薄膜的拉伸性能、热性能以及聚氨酯涂层的耐磨性能,并探讨了EG和TMP用量对聚氨酯薄膜的热性能以及力学性能的影响,重点研究了二者对聚氨酯涂层耐磨性能的影响.测试结果表明:当聚氨酯树脂中EG和TMP的羟基摩尔分数分别为35% ~ 39%和20%时,聚氨酯涂层的耐磨性能较佳,适用于制备硅胶表面保护涂料. 相似文献