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丙烯酸酯改性水性聚氨酯阻燃涂料的研究 总被引:2,自引:0,他引:2
以丙烯酸(甲基丙烯酸甲酯、丙烯酸丁酯)改性水性聚氨酯预聚体,制备改性水性涂料;并以三聚氰胺/季戊四醇为协效阻燃剂,从而制备一种改性阻燃水性聚氨酯涂料。对改性涂料进行了吸水率、耐水性测试;对改性阻燃涂料进行了燃烧试验、热重分析(TG)。结果表明,改性涂料的吸水率降低了48.6%。阻燃涂料的阻燃时间可达8min以上,耐高温、阻燃性能明显提升。 相似文献
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陈朋;吴立霞;俞斌;许戈文;黄毅萍 《聚氨酯》2013,(11):64-67
水性聚氨酯涂料以其优异的性能和绿色环保的优势而得到大力发展。近几年,植物油改性水性聚氨酯涂料成为热门,文中综述了蓖麻油、亚麻油、以及豆油改性水性聚氨酯合成水性氨脂油涂料的研究进展,并对植物油改性水性聚氨酯涂料的未来发展进行了展望。 相似文献
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水性聚氨酯阻燃涂料燃烧试验研究 总被引:3,自引:0,他引:3
对水性聚氨酯涂料的阻燃性能进行了研究。选用不同的阻燃体系对水性聚氨酯涂料进行改性,得到不同类型的水性聚氨酯阻燃涂料,使其防火隔热的效果大大增强,对不同阻燃体系的性能进行比较分析,得出最佳的体系和最好的配比。 相似文献
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<正>(接上期)3.2.1以聚碳酸芳酯制备PCDL-WPU PCDL型PU在耐热及耐水解性方面是PU中最佳的耐久等级,作为耐久性膜、汽车和家具用人造皮革涂层材料(尤其是水性涂料)、胶粘剂等被广泛应用。但目前广泛市售的聚碳酸酯二醇,主要是由1,6-己二醇合成所得,其缺点:(1)因系结晶体,常温下为蜡状,无流动性,操作困难;(2)制得的PU软段的凝集性高,低温时的柔韧性、伸长率、弯曲度以及回弹性欠佳,限制其广泛应用;(3)所得PU溶液的黏度高,成型或涂敷时操作性差;(4)由其制得的人造皮革,其质感差, 相似文献
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A hyperbranched polyol (HBP), viz. hyperbranched 2,2-bis(hydroxymethyl) propionic acid (MPA) polyester-16-hydroxyl, was incorporated chemically into waterborne polyurethane by a covalent bond as a multifunctional chain extender or chemical crosslink for isocyanate (NCO)-terminated PU prepolymers. In addition, the effects of HBP incorporation on the particle size, tensile properties in the glassy and rubbery states, thermal stability, contact angle, and hardness were examined. After HBP incorporation, the particle size initially decreased during the dispersion step. With time, the particle size increased due to the swelling of HBP, and there was an increase in the contact angle, initial modulus, break strength, and decomposition temperature of the dispersion cast film. In particular, the largest increases in these properties were obtained when the NCO index was unity. 相似文献
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Richard W. Hein 《Journal of Coatings Technology》1998,70(886):19-22
There are 17 different metals used in driers for coatings. The role of these various metals in the promotion of the drying
of coatings is described. Suggestions are given concerning the choice of which metal driers to use in waterborne coatings
and what concentrations are typically used. Specific examples are described to help illustrate these choices. Several new
water-reducible driers are presented together with their benefits and advantages compared to the more commonly used driers.
Presented at 41st Annual Technical Symposium on Waterborne Coatings, Cleveland, OH, on April 24, 1998.
811 Sharon Dr., Westlake, OH 44145-1522 相似文献
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Lorea Buruaga Haritz Sardon Lourdes Irusta Alba González María José Fernández‐Berridi Juan José Iruin 《应用聚合物科学杂志》2010,115(2):1176-1179
Polyurethane (PU) fibers were obtained by electrospinning of waterborne PU dispersions. As dispersion cannot be electrospun, a water‐soluble polymer (poly (ethylene oxide) (PEO)) was dissolved in the PU dispersion and fibers were obtained from electrospinning the resulting mixture. Pure PU fibers were obtained after removing PEO with water extraction. Continuous PU fibers were obtained using a PU/PEO weight ratio higher than 2.5. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 相似文献
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本文概述了水性聚氨酯胶粘剂的国内外研究现状,介绍了水性聚氨酯胶粘剂的制备方法,综述了水性聚氯酯改性研究进展,并展望了水性聚氯酯胶粘剂的发展方向. 相似文献
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水性聚氨酯胶粘剂的研究进展 总被引:2,自引:0,他引:2
随着人们生活水平的提高和环保意识的增强,水性聚氨酯胶粘剂必然将取代溶剂型聚氨酯胶粘剂。论文综述了水性聚氨酯胶粘剂的制备方法、优点及存在的不足、改性方法及效果。最后对水性聚氨酯胶粘剂的发展现状进行了分析,并对其发展趋势进行了展望。 相似文献