共查询到18条相似文献,搜索用时 62 毫秒
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以TDI三聚体和环氧树脂制备了耐温300℃的新型涂料,漆漠具有快干,硬度高,耐冲剂,耐介质等优良性能。本文还论述了环氧树脂品种,NCO/OH比值和颜基比等对漆膜性能的影响。 相似文献
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新型高附着力环氧底漆的研制 总被引:1,自引:0,他引:1
通过选择合适的环氧树脂、增韧剂、硅烷偶联剂,并配用合适的环氧固化剂,研制成一种经80℃、1 h烘烤干燥后,可用于不打磨铝材、镀锌板、不锈钢表面,具有高附着力的环氧底漆。 相似文献
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The corrosion behaviour of glassflake epoxy coatings on steel substrate with and without an adhesion promoter was examined by electrochemical impedance spectroscopy. The impedance data show that an improvement in the protective behaviour of the coating is connected with a large increase in the resistance in the pores of the coating. These effects are probably due to an improvement in the initial, wet and recovered adhesion between glassflakes and epoxy binder. The results of pull-off adhesion tests are presented. 相似文献
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厨房油烟会产生烦人的油垢,既影响厨房卫生,又不利于身体健康,其清洗难度很大。常用的重油垢清洗剂有强碱型、溶剂型和表面活性剂型。强碱型对重油垢去除能力强,其缺点是腐蚀性较强,对器具表面和使用者有腐蚀性和伤害作用。有机溶剂型对油垢具有良好的溶解作用,但由于有机溶剂易燃、易爆而且有毒,不太适用于厨房环境。表面活性剂型使用方便、作用温和以及成本低,但对重垢的去除效果不太理想。利用溶解度参数原理,结合HLB值,在测定油垢酸值、溶解度参数等的基础上配制溶剂/表面活性剂型厨房重油垢清洗剂,所制得的清洗剂对油垢有较好的溶解和乳化效果。 相似文献
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Cecilia Deyá 《Journal of Adhesion Science and Technology》2013,27(14):1548-1562
Coatings are one of the most used protection methods for metals. Metallic coatings, such as zinc and its alloys, are used to protect steel in mild corrosive environments. In aggressive environments, on the other hand, organic coatings must be employed in the so-called duplex systems. However, the galvanized steel/organic coating adhesion is a problem and many attempts had been done to solve it with the incorporation of a chromate-based or phosphate-based interlayer. Nowadays, the use of these compounds is questioned due to their environmental impact and new adhesion promoters, like silanes, are being investigated. The aim of this paper was to study the adhesion and the anticorrosive behavior of a duplex system with a layer of glycidoxypropyltrimethoxysilane (γ-GPS) between the zinc and the coating. Polarization tests and corrosion potential measurements were done on the γ-GPS/galvanized steel to select the better anticorrosive pretreatment conditions for the application of an organic traditional paint. Dried and wet adhesion of the coating to the pretreated substrate was studied by the standard tape test. Salt spray test and electrochemical noise technique were employed to study the corrosion behavior of the duplex systems. Results showed that the films of γ-GPS formed on galvanized steel diminished the corrosion current of the metal, but they do not protect the substrate by a barrier effect. The incorporation of the pretreatment in the duplex system increased the adhesion of the paint, especially when the pretreated substrate was cured 1?h at 200?°C. 相似文献