共查询到20条相似文献,搜索用时 703 毫秒
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简要分析了超薄型钢结构防火涂料在钢结构防火中的重要作用,介绍了其组成及特点,并阐述了超薄型钢结构防火涂料的研究进展,最后对超薄型防火涂料的发展进行了展望。 相似文献
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分析了不同基料树脂对超薄型钢结构防火涂料性能如发泡能力、涂层的质量损失百分比、发泡层的硬度和致密性的影响,介绍了不同基料树脂的优缺点,指出选择合适的成膜物质,对提高超薄型钢结构防火涂料的性能是至关重要的环节。 相似文献
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超薄型钢结构防火涂料是20世纪90年代兴起的一种新型防火涂料,同时具有优良的装饰作用和防火性能。超薄型钢结构防火涂料与厚涂型、薄涂型相比,粒度更细、涂层更薄,用量更少,施工方便,装饰性更好,是钢结构防火涂料领域研究的热点。文章介绍三种新型超薄钢结构防火涂料的研究进展,并对其发展前景进行了展望。 相似文献
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Estimation of biocide lifetime in marine antifouling coatings is of great use to improve and develop technologies. An existing model simulating the diffusion of molecules in polymer networks below glass transition temperature was employed to estimate leaching. This model was modified to allow for swelling due to water uptake and to permit evaluation of copolymer binders as well as homopolymers. This enabled prediction of biocide diffusion coefficients in polymeric coatings of various binder types, including pMMA, a pMMA/butylacrylate binder containing rosin, and a trityl copolymer, using usnic acid as a ‘model’ biocide. For comparison with modelling results, coatings fomulated using each binder type were also submitted to static and dynamic seawater immersion. Fluorescence microscopy techniques were used to quantify biocide leaching from these coatings relative to unimmersed coatings. Agreement of the modified diffusion model with experimental data was good for pMMA, reasonable for the rosin-based binder, and poor for the trityl binder. Comparison of predicted and experimental biocide profiles in the binder demonstrated deviation from the expected Fickian mechanism for the pMMA binder, despite the accurate rate prediction. This work demonstrates a first approach to predicting organic biocide diffusion, and highlights the areas for future attention. 相似文献
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钢坯防氧化涂料中高温喷涂用无机复合粘结剂的研制 总被引:1,自引:0,他引:1
通过添加三聚磷酸铝和调整pH值制备了一种新型的钢坯高温防氧化涂料用磷酸铝系无机复合粘结剂,分别用TG-DTA、SEM和XRD对无机复合粘结剂进行了热性能测试和结构形貌表征。结果表明,无机复合粘结剂的耐高温性能好,高温交联网状结构复杂,三聚磷酸铝在低温体系中起到了一定的固化剂作用,提高了防氧化涂料粘结剂的高温粘结作用。与涂料的结合应用实验表明,添加4%的无机复合粘结剂有利于涂料在高温基体上的喷涂和附着,提高了涂料的高温防氧化效果。 相似文献
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20世纪60年代后期,国际上开始出现工业化生产的涂料用饱和聚酯与饱和聚酯涂料。中国从20世纪70年代开始发展饱和聚酯及其涂料,主要集中在生产溶剂型饱和聚酯树脂。油墨的基料是生产油墨的重要原料,它是合成树脂的一种。饱和聚酯树脂与醇酸树脂相似,用来作为油墨的连接料使用,其对颜料的润湿程度要好于其他类型树脂的连接料,并且对于生产色彩鲜艳的油墨大有好处。本研究采用熔融法与溶剂法相结合的工艺,合成出一类具有高Tg、快速干燥等特点,可应用于卷钢油墨的饱和聚酯。 相似文献
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聚偏二氟乙烯卷材涂料的研究 总被引:1,自引:0,他引:1
以聚偏二氟乙烯(PVDF)为基料的建筑用氟碳涂层以其卓越的户外性能在卷材涂装中的应用已越来越受到人们的关注,简要探讨了卷材涂装对PVDF涂料的要求、组成及其性能的影响等。 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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Coatings contribute to about 10% of the overall cost of paper production of which, the binder is the highest cost component in the formulation. In addition to costs, the binders that are currently being used are synthesized from fossil fuel feedstock raising concerns towards the sustainability of paper coatings. Furthermore, papers coated with waxes, polyolefins and other synthetic materials are difficult to recycle or compost. These challenges inherent with synthetic binders can be addressed by using renewable, plant based binders. This research focused on an abundant and underutilized source of hemicellulose based binders (DG gum) that can be extracted from distiller's dried grains. The extracted binder was compared with polyvinyl alcohol (PVA) in a coating formulation consisting of 10:1 CaCO3 to binder formulation coated on light weight paper. Cobb test, dry and wet tensile tests, optical properties (brightness, color, opacity), water vapor transmission rate (WVTR) analysis were performed to compare the hemicellulose based binder with PVA. The results indicate water absorptivity reduction by 25% for both DG gum and PVA coatings from the base paper value. Dry tensile index was lower with higher coating weights for both coatings with similar performance. The performance on WVTR analysis for both coatings was also comparable. No significant differences in optical properties after coating were observed from that of the base paper. These results suggest that hemicellulose based binder extracted from distiller's grains has the potential to replace synthetic binders in paper coating formulations. 相似文献