共查询到20条相似文献,搜索用时 484 毫秒
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丙烯酸粉末涂料及树脂 总被引:2,自引:0,他引:2
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。 相似文献
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介绍了聚氨酯粉末涂料用羟基聚酯树脂的合成,简单地讨论了催化剂、多元酸和多元醇对合成反应的影响,并对聚氨酯粉末涂料的性能进行了测试。 相似文献
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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。 相似文献
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本文综述了聚氨酯涂料的国内外发展概况;聚氨酯涂料在汽车、防腐蚀、木器家具和粉末涂料等领域的应用;以及在新聚氨酯聚合物、常用聚氨酯涂料的改性、聚氨酯涂料新品种方面的开发动向。 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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紫外光固化聚氨酯丙烯酸酯涂料的研究进展 总被引:1,自引:0,他引:1
介绍了UV固化PUA水性涂料和PUA粉末涂料的研究进展,并对PUA涂料在多官能度树脂、双固化体系和有机一无机复合涂料等几个方面的进展进行了综述。 相似文献
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Behzad Shirkavand Hadavand Maryam Jouyandeh Seyed Mohamad Reza Paran Reza Khalili Henri Vahabi Hamed Fakharizadeh Bafghi Fouad Laoutid P. Poornima Vijayan Mohammad Reza Saeb 《应用聚合物科学杂志》2020,137(45):49412
This work reports on nonisothermal degradation kinetics of polyurethane (PU)-based powder coatings containing 1, 3, and 5%wt% vinyltrimethoxysilane functionalized Al2O3 (V-Al2O3) nanoparticles. Thermogravimetric analysis of PU/V-Al2O3 powder coatings with different V-Al2O3 contents has been performed at different heating rates. Variation of activation energy (Ea) of PU/V-Al2O3 powder coatings was modeled as a function of partial mass loss by using Kissinger–Akahira–Sunose, Ozawa–Wall–Flynn and modified Coats–Redfern isoconversional approaches. The results revealed hindered decomposition process of PU/V-Al2O3 nanocomposite powder coatings, featured by an increase in activation energy of degradation from ∼158 for blank PU to 225, 183, and 229 kJ/mol for nanocomposites filled with 1, 3, and 5 wt% of V-Al2O3, respectively. Likewise, pre-exponential factor values increased for samples containing V-Al2O3 nanoparticles compared to that of blank sample. Sestak–Berggren kinetic model appropriately captured thermal degradation behavior of PU/V-Al2O3 nanocomposites than that of nth order decomposition kinetic reaction models. 相似文献
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针对造成PU木器涂料透明性下降的发白及蓝光现象,分析了木器涂料涂膜透明性的光学原理,通过对其常用的消光粉类型、用量和干膜厚度的关系试验,初步提出了用分光测色仪来对涂膜透明性进行定量表示的方法。 相似文献
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含纳米ATO聚氨酯弹性抗静电涂料 总被引:1,自引:0,他引:1
以脂肪族聚氨酯弹性树脂为基体,透明纳米ATO导电粉为导电介质,添加超分散剂,采用物理与化学相结合的分散方法对纳米ATO进行预处理。主要解决纳米粒子的分散与团聚的难题,制备出可常温固化、颜色可调的含纳米ATO聚氨酯弹性抗静电涂料。讨论了基体树脂、纳米ATO含量、超分散剂种类与加量、研磨时间以及助剂等因素对抗静电涂料的表面电阻、耐候性、弹性、强度以及稳定性等性能的影响。同时对涂料的性能进行了测试与表征。 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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Emir Temizkan Gülden Eroğlu Ayça Ergün Hüseyin Deligöz 《Polymer Engineering and Science》2021,61(5):1392-1404
Preparation and characterization of a series of polyurea (PU) coatings and their influences on layered composite materials based on rebonded polyurethane (PUr) for floor application are described in terms of the raw materials, formulation, and application performance. While PU coatings show almost the same FTIR peaks, thermogravimetric analyses results reveal that thermal stabilities of the PU coatings are slightly enhanced with the use of trifunctional polyamine compound and one step degradation takes place beyond 300°C. All PU coatings have very dense, smooth, and bubble-free surfaces whereas the cross-sectional SEM images exhibit pores of different sizes. Contact angle values of all PU coatings are bigger than 90° indicating that the surfaces are hydrophobic. Using propylene carbonate in the preparation of methylene diphenyl diisocyanate (MDI) prepolymer and the chain extender in the PU coating formulation impacts the mechanical and electrical properties of the PU coatings as well as layered PU/PUr composite materials. In conclusion, not only the controllable physicochemical and mechanical properties of layered PUr/PU composites but also the usage potential of recycled PU scraps in these layered composites are very promising for better floor applications. 相似文献