共查询到20条相似文献,搜索用时 78 毫秒
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制备了一种聚酯氨基涂料,考察固化温度变化、 酸催化剂用量、 氨基树脂和饱和聚酯树脂质量比对聚酯氨基涂料性能的影响.研究结果表明:温度提高固化时间缩短,温度过高涂层表面产生较多气泡.采用对甲苯磺酸做催化剂能降低固化温度,最适添加量为1%,固化温度由180℃降低至150℃.氨基树脂和聚酯树脂质量比为1:3时,铅笔测试硬度H... 相似文献
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以二羟甲基丙酸为亲水单体,间苯二甲酸、1,4-环己烷二甲酸、二聚酸等为酸类单体,新戊二醇、1,4-环己烷二甲醇、二聚醇、三羟甲基丙烷等为醇类单体,在钦酸四丁酯的催化下,制备了水性聚酯树脂。再经过添加水性氨基树脂,制得耐水煮性好的水性氨基烤漆。研究了二聚酸和二聚醇的用量,不同氨基树脂,以及聚酯树脂与氨基树脂的质量比对烤漆性能的影响。结果表明,当二聚酸和二聚醇的质量分数分别为15%和12%时,所制备的水性聚酯树脂与Cymel 303氨基树脂以质量比3.0:1配合,可以获得综合性能良好的氨基烤漆,其漆膜的附着力为0级,硬度大于H,60。光泽达到103,耐水煮时间超过3h,耐丁酮擦拭超过100次,正反耐冲击性(1 kg)均大于50 cm。 相似文献
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以聚酯树脂、氨基树脂及浮型铝银浆为主体,制得了汽车轮毂用浮银涂料。研究了不同树脂基料、浮型银浆、颜基比、溶剂、配套涂料以及工艺参数对涂层外观、附着力、耐水、耐盐雾性能的影响。通过试验表明,浮银涂料中树脂选用某聚酯树脂与氨基树脂、银浆选用某浮型银浆以及必要的辅助材料,配合优化的中涂底漆、罩光清漆及工艺参数,涂层具有优异的装饰性、防腐性及防护性。 相似文献
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《国际聚合物材料杂志》2012,61(6):309-313
In this study, organo clay-modified alkyd resins were synthesized and these modified alkyd resins were cured with different ratios of melamine formaldehyde resin for the first time. Alkyd resins were blended with 30% and 40% of a commercial melamine-formaldehyde resin. Alkyd-melamine formaldehyde resin films were cured at 140°C for 2 h in an oven. The effect of organo clay addition on the physical and chemical film properties was investigated. These surface coating properties of the resins enhanced with amount of organo clay up to 2–3%. These resins are suitable for manufacturing of high-performance industrial baking enamels. 相似文献
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三聚氰胺改性脲醛树脂胶粘剂研究进展 总被引:26,自引:2,他引:24
本文详细论述了三聚氰胺改性脲醛树脂胶粘剂(MUF)的和应用情况,总结了三聚氰胺改性脲模型树脂胶粘剂的机理。用三聚氰氨改性脲醛树脂胶粘剂提高了脲醛树脂粘剂的耐水性,并有效降低了游离甲醛含量。 相似文献
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Organo clay modified alkyd resins were prepared and these modified alkyd resins were cured with different ratios of melamine formaldehyde and urea formaldehyde resins in this work. Alkyds formulated to have oil content 40% were prepared with phthalic anhydride (PA), glycerine (G), coconut oil fatty acid (COFA), dipropylene glycol (DPG) and organo clay. “K alkyd constant system” was used for the formulation calculations of the alkyd resins. Alkyd resins were blended with 40% of a commercial melamine formaldehyde. The films of the alkyd–amino resins were prepared from 60% solid content xylene solutions using 50 μm applicators. After the films were cured at 140 °C for 2 h in an oven, properties of the films were determined. The film properties of the alkyd–amino resins such as drying degree, hardness, adhesion strength, abrasion resistance, water, acid, alkaline, solvent resistance, and resistance to environmental conditions were investigated. The addition of the urea formaldehyde resin and organo clay has positive effect on the physical and chemical resistance of the alkyd–amino resins. 相似文献
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采用两步法合成了用于涂料交联剂的甲醚化三聚氰胺树脂,考察了温度、时间、催化剂等因素对交联剂中不同组分含量的影响,确定了最佳的合成条件。用红外光谱分析了产品的主要基团,验证了两步的反应机理,并将合成的中醚化三聚氰胺树脂与实验室自制的丙烯酸改性环氧树脂复配,考察了涂膜固化条件。结果表明,合成的交联剂贮存性能良好,醚化三聚氰胺树脂作为交联剂加入到丙烯酸环氧树脂中,可以明显降低固化温度且改善原有涂膜的脆性,成膜性能好,尤其是具有优良的附着力、柔韧性和耐化学品性。 相似文献
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Dipak K. Raval Amit J. Patel Bhavil N. Narola 《Polymer-Plastics Technology and Engineering》2013,52(3):293-299
Amino resins are used for various applications such as decorative plastic plates, decorative wood boards, particle boards, leather tanning, foam, coating, and molding materials. In the present work, it was planned to prepare modified melamine-formaldehyde resin by incorporating casein. The intended melamine-formaldehyde-casein (MFC) resin samples were prepared under alkaline condition with an 1:3 melamine: formaldehyde ratio. Casein was incorporated in varying proportions (up to 25% w/w of melamine content) at 85–90°C. The samples were characterized by viscosity measurement and vapor pressure osmometry (VPO). The resin samples were cured isothermally at 60°C using ammonium chloride as well as hydroxylamine hydrochloride and at 120°C using hexamine as the curing agents. Jute fabric (JFRC) and glass fabric reinforced composites (GFRC) were produced by maintaining 60:40 and 40:60 proportion of resin to reinforcement materials, respectively. The laminates thus formed were characterized for their mechanical properties and chemical resistance. 相似文献
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水性罩光清漆固化反应速率对于以“湿碰湿”工艺施工的水性三涂一烘(3C1B)体系有很大影响,水性罩光清漆的固化反应速率主要由作为交联剂的氨基树脂所控制。本文对 3种不同类型的氨基树脂进行了红外表征( FT-IR),分析了其分子结构。分别以上述氨基树脂作为交联剂制备水性罩光清漆,通过旋转流变仪测试清漆在固化过程中剪切储存模量的变化,探究了上述氨基树脂对水性罩光清漆固化反应速率的影响。对比了所制备的水性罩光清漆搭配水性 3C1B中涂和色漆的漆膜性能,分析了氨基树脂对漆膜性能的影响。研究结果表明:以甲醚丁醚混合醚化的氨基树脂作为交联剂的水性罩光清漆的固化速率适用于 3C1B体系,且制备的漆膜性能最佳。 相似文献