共查询到18条相似文献,搜索用时 625 毫秒
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针对我国近海内陆装配式钢结构长效防腐需求,研制了与之配套的水性重防腐涂层。通过调整涂料关键材料的组成及配比,研究了其对水性环氧富锌底漆、水性环氧云铁中间漆以及水性脂肪族丙烯酸聚氨酯面漆关键性能的影响。结果表明:适量的纳米锌粉、云母氧化铁以及离子吸收剂的加入有利于提高底漆的耐腐蚀性和早期耐水性;云母氧化铁与复合磷酸锌颜料合理搭配,有助于提升中间漆的防腐性能;附着力促进剂对水性聚氨酯面漆性能提升显著。所研制的水性环氧富锌底漆、水性环氧云铁中间漆、水性脂肪族丙烯酸聚氨酯面漆及配套涂层的相关性能超过行业标准(HG/T 5176—2017)的性能指标,表明了该涂层体系可以满足 C4环境下的长效防腐要求( >25 a),为近海内陆装配式钢结构的表面涂装提供了技术参考。 相似文献
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以水性环氧乳液/水性固化剂为成膜物质,制备了一款综合性能优异的工程机械用水性环氧防腐底漆,探讨了水性环氧乳液、防锈颜料、颜填料体积浓度(PVC)对水性环氧防腐底漆性能的影响,使用傅里叶红外光谱仪(FTIR)、扫描电镜(SEM)、电化学交流阻抗谱(EIS)等测试方法,对环氧树脂的基团结构、环氧涂层的表面形貌和涂层的腐蚀机理过程进行了表征与分析,结果表明:选用的Banco2092环氧乳液/Banco920固化剂成膜物质、防锈颜料为ZMP-1、PVC为30%时,环氧底漆的综合性能最佳,与自制水性聚氨酯面漆复配后,耐酸性达到168 h,耐碱性达到96 h,耐盐雾可达1000 h,该复合涂层的综合性能超过了行业标准HG/T 4339-2012性能要求。 相似文献
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采用水性环氧树脂乳液作为基料,水性改性胺作为固化剂以及环保型助剂等配制成双组分水性环氧防锈底漆。讨论了水性环氧固化剂、活性防锈颜料、流变剂及活性稀释剂对水性环氧防锈底漆性能的影响。 相似文献
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The failure path of iron/epoxy and titanium/epoxy lap joints prepared from adherends pretreated with dilute aqueous solutions of ω-aminopropyltriethoxysilane (ω-APS) and then exposed to water at 60°C for varying times was determined using X-ray photoelectron spectroscopy (XPS). Iron/epoxy lap joints prepared using T-APS primers applied at pH 8.0 and tested without exposure to water failed near the oxide/primer interface with only a small amount of adhesive left on the substrate failure surface. Iron/epoxy joints that were primed with T-APS at pH 10.4 and tested without immersion in water failed partly within the adhesive and partly near the interface. All of the iron/epoxy joints failed in the primer near the primer/oxide interface when tested after exposure to water for seven days but very little corrosion of the substrates was observed. When titanium/epoxy lap joints were tested without exposure to water, failure was partly within the adhesive and partly near the primer/oxide interface regardless of the pH at which the primer was applied. However, the failure path shifted to near the primer/oxide interface after the joints were immersed in water for seven days. It was concluded that failure of the joints after exposure to water was associated with hydrolysis within the primer rather than with extensive corrosion of the substrate. 相似文献
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以水性环氧树脂乳液及水性环氧固化剂为主要成膜物质,氧化铁红与磷酸锌为防锈颜料,滑石粉和硫酸钡为填料,研制开发了一种性能优良的水性环氧防锈底漆。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(1):207-225
The structure of films formed by a multicomponent silane primer applied to an aluminum adherend and the interactions of this primer with an amine-cured epoxy adhesive were studied using X-ray photoelectron spectroscopy, reflection-absorption infrared spectroscopy, and attenuated total reflectance infrared spectroscopy. The failure in joints prepared from primed adherends occurred extremely close to the adherend surface in a region that contained much interpenetrated primer and epoxy. IR spectra showed evidence of oxidation in the primer. Fracture occurred in a region of interpenetrated primer and adhesive with higher than normal crosslink density. The primer films have a stratified structure that is retained even after curing of the adhesive. 相似文献
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快干型双组分水性环氧树脂涂料的研究 总被引:7,自引:2,他引:5
采用水性环氧树脂乳液作为环氧基组分,水溶性聚酰胺作为固化剂,配制成快干型双组分水性环氧树脂防腐底漆。该涂料保持了溶剂型环氧防腐蚀涂料的强附着力和耐化学品性能,适用于对溶剂散发要求极为严格的非下水钢结构 相似文献
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高性能水性环氧防腐底漆的研制 总被引:1,自引:0,他引:1
以水性环氧树脂固化体系为成膜物,以三聚磷酸铝、磷酸锌、钼酸锌为防锈颜料,以绢云母、滑石粉、沉淀硫酸钡为填料,在多种功能助剂和水的配用下,制得具有优异的附着力、防腐性、抗形变能力的水性环氧防腐底漆,适用于较难附着的不锈钢、铝合金等多种金属基材的防腐保护。 相似文献