共查询到20条相似文献,搜索用时 62 毫秒
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介绍了聚酯涂料和聚氨酯涂料的传统概念。叙述了聚酯涂料和聚氨酯涂料概念的演变。指出应该在业内外规范涂料名称概念,以利于消费者选用。 相似文献
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随着经济发展和人民生活水平的提高,各种新型涂料应运而生,象多彩涂料、仿瓷涂料和标志涂料等都成为当前涂料的热点。这里就这几种涂料的发展情况谈点看法。一、多彩涂料我国五、六十年代在美术漆中有裂纹漆和疙瘩漆,利用底漆和面漆之间表面张力的不同而使涂膜形成条状或粒状的彩色花纹,这种花纹是需两次施工才能形成的。多彩涂料是指一次性涂装能形成彩色花纹的涂料、其特征是用液状或胶体状二种或多种颜色的粒子制成悬浊状的涂料,主要用喷涂方法一次涂装形成彩色花纹。目前,国外只有日、美、英、荷等国生产多彩涂料,市售商品主要是… 相似文献
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The formation of molecular networks related to the consumption of unsaturated carbon-carbon double bonds (CC) during oxidative drying of alkyd coating films incorporating unsaturated fatty acids was studied. The concentration of CC bonds was measured as a function of drying time and distance from the exposed film surface (depth) using confocal Raman microspectroscopy (CRM). The change in spatial distribution of the CC double bond concentration across the film cross section provides information on the kinetics of the oxidative cross-linking process in the alkyd films. It was found that the CC bond consumption is not homogeneous across the depth of the drying film. The results obtained allowed us to quantitatively monitor the progress of the drying process and the movement of the ‘drying front’ within the coating films. The drying profiles suggest that oxygen penetration into the coating film is a rate-limiting factor in the drying process. Depth profiles during the film forming process develop due to local variations in the oxygen solubility, diffusion coefficient of oxygen, and available amount of double bonds for cross-linking. The influence of several industrially relevant factors, like oil length of the alkyd resin, thickener, solvent, and drier on the film formation process is discussed. Depth resolution of the analytical approach and spatial accuracy of confocal Raman microspectroscopy are also treated. 相似文献
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根据国外抗菌涂料的抗菌和防霉特性,研究了商业主要抗菌剂的抗菌性能,介绍了测试抗菌性能的两种方法:抑菌圈法和JIS?Z?2801。详细研究了基材、膜厚、浸滤、罐内防腐剂等可变因素对抗菌性能的影响。 相似文献
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通过对几种常用环氧树脂常温固化剂性能的比较和应用结果表明,以天然腰果壳油合成的长链的取代酚醛胺固化剂,具有优异的综合防护性能,是环氧树脂高性能化的一种途径。 相似文献
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