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羟基丙烯酸树脂A450与氨基树脂、潜催化剂封闭性磺酸盐、稀释剂等复配成的丙烯酸氨基涂料,具有低温固化特性,该氨基涂料与一定比例的多异氰酸酯固化剂混合得到的氨基聚氨酯涂料,加入二甲苯、醋酸酯、醇类稀释剂不混浊,该涂料储存稳定性好,交联密度高,可常温自干,也可低温固化,涂膜综合性能优异。氨基丙烯酸聚氨酯采用XP2605异氰酸酯固化剂,可显著提高涂料的干燥速度、硬度、耐磨性、耐溶剂等综合性能,降低对水的敏感性。 相似文献
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羟基丙烯酸树脂与氨基树脂、封闭型磺酸盐潜催化剂、稀释剂等复配成的丙烯酸氨基漆,具有低温固化特性,该氨基漆与一定比例的多异氰酸酯固化剂混合,制得氨基聚氨酯漆.该涂料贮存稳定性好,交联密度高,可常温自干,也可低温固化. 相似文献
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通过使用自身合成的特殊多官能度丙烯酸树脂,结合特殊的超(快干)固化汽车修补涂料配方的设计,对成品漆的贮存稳定性与漆膜的固化速度和综合性能进行研究,着重探讨了多种官能团丙烯酸树脂的选择以使该双组分聚氨酯涂料成品贮存更稳定,并且漆膜在满足低温快干的同时,还具有高施工固含、高丰满度及优异的抛光性,以达到节能环保、低VOC排放的要求。 相似文献
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《现代涂料与涂装》2006,9(12):55-55
氨基丙烯酸卷铝涂料的研制陈斌等.上海涂料,2006,44(9):1目前,用于厚铝箔表面涂装的涂料多为聚酯涂料,此涂料需要在230℃以上的较高温度下才能反应成膜,对于薄铝箔来说,这么高的成膜温度会导致铝箔变形。本文通过改性单体与(甲基)丙烯酸酯合成热固性丙烯酸树脂,再与氨基树脂、颜料和助剂配制成一种用于薄铝箔上的氨基丙烯酸卷铝涂料。该涂料在170~190℃即可成膜,既能用于0.1m m以上较厚的铝箔涂装,又能用在0.1m m以下较薄的铝箔上,具有较好的柔韧性、附着力和耐溶剂擦拭等性能。FE V E树脂常温固化耐磨涂料的研究杨军等.涂料工业,2006,36… 相似文献
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选用合适单体合成高反应活性聚酯树脂,介绍了树脂的合成工艺,以高亚氨基部分醚化氨基树脂为交联剂,自制二壬基二磺酸为催化剂,制成低温固化卷材涂料。所制备的涂料具有很好的耐候性和加工成型性能。讨论了影响涂料性能的因素。 相似文献
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对环氧丙烯酸树脂进行改性,并用二元羧酸固化,通过混合、熔融挤出、磨粉、过筛制得适合塑料底材涂装的120 ℃低温固化环氧基丙烯酸粉末涂料。与红外固化方式相结合,可缩短固化时间。对聚丙烯材质的汽车保险杆进行表面处理后,将低温固化环氧丙烯酸粉末涂料涂装在表面处理过的汽车保险杆上,提高涂层在保险杠上的附着力。检测结果表明:涂层具有优异外观、附着力和耐候性,降低了目前保险杠涂装时的VOC排放。 相似文献
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《Journal of Adhesion Science and Technology》2013,27(8):883-892
In this study, water-borne coating formulations which could be cured quickly were prepared using acrylic emulsion as the major coating constituent and highly reactive melamine resin as curing agent, and further incorporating a variety of additives. Melamine and acrylic types, melamine/acrylic mass ratio in coating formulation, and curing temperature were found to influence the performance of cured coatings. When melamine resin etherified slightly with methanol was used as curing agent, melamine/acrylic mass ratio was 0.45 and the coating formulation was baked at 170°C for 30 s, it was observed that performance of cured coating was the best. FTIR was used to study molecular structural changes of coatings after curing, and to analyze the cure mechanism of the coating. DSC was used to study the range of temperature in which curing occurred. The water-borne coating prepared in this study could be cured quickly when it was applied on decorative paper surface and baked at high temperature. Performance properties of cured coatings were tested according to standard methods, it was observed that dry heat resistance, wet heat resistance, adhesion, pencil hardness, and stain resistance all met standard requirements. 相似文献
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Melamine resin polymers exhibit high transmittance, high pencil hardness, and high refractive index. However, high temperatures and long reaction times are required to obtain the desired condensation products. In this study, acrylic‐modified melamine resins were synthesized that were cured by irradiation with ultraviolet (UV) light. The synthesized acrylic‐modified melamine resins could be cured rapidly due to the radical reaction of the acrylic groups and retained high transparency and high refractive index as features of the melamine resin polymers. The polymerized film by UV curing had low shrinkage and high refractive index. Compared with general multifunctional moiety‐type acrylic monomers such as pentaerythritol triacrylate and dipentaerythritol hexaacrylate, the acrylic‐modified melamine resins had the same degree of hardness. In addition, flexibility, a feature of the urethane moiety, was imparted to the polymer by the reaction of residual hydroxyl groups with isocyanate. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci 000: 000–000, 2010 相似文献
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Sang Sun Lee Jung Hee Koo Sung Soo Lee Soo Gyum Chai Jong Chan Lim 《Progress in Organic Coatings》2003,46(4):266-272
This study describes the crucial role played by acrylic resin and curing agents in the gloss reduction of low temperature curable hybrid powder coatings. The incompatibility of the acrylic resin with the primary (epoxy/polyester) resins induces a two-phase morphology and initiates the formation of micro-structured surface. DSC measurements on various mixtures reveal the relative reactivity and the role of curing agents in the gloss reduction. These results indicate that the optimization of relative reactivity and compatibility is required to achieve low gloss coatings at low curing temperature. In addition, the gloss level is strongly affected by extruding conditions. These experimental results give a possibility to develop matt and semi-matt low temperature curable powder coatings. 相似文献
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A.L. Yahkind D.A. Paquet Jr. D.V. Parekh C.L. Stine L.G.J. van der Ven 《Progress in Organic Coatings》2010
Polyurethane polyols (PUPOs) and melamine polyols (MEPOs), invented by AkzoNobel Coatings, offer valuable alternatives to the commonly used polyester and acrylic polyols and new formulating tools for the development of novel coatings. The resin chemistry is based on the predominantly selective reactivity of α,β- and α,γ-diols with commonly used polyisocyanate and melamine formaldehyde crosslinkers. The resulting low molecular weight, hydroxyl functional resins are suitable for use in low VOC coatings. By choosing the appropriate crosslinker, diol, and modifier, the chemical structures of these resins can be altered to obtain the desired properties of the coatings. Synthesis methods for novel PUPOs and MEPOs and properties of one component and two component coatings containing them are described. 相似文献
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We attempted to prepare medium‐oil‐length glycerol alkyds based on Mahua oil. Fatty acids were isolated from the oil and used in the preparation of alkyds by the fusion method. The resins were characterized by IR spectroscopic analysis. The physicochemical and film properties of these resins were also studied. IR analysis of the resins revealed the formation of phthalate esters showing characteristic peaks at 1720 cm?1. The resin was modified with melamine formaldehyde, which cured at high temperatures. Alternatively, the resin was made to air dry with ester gum, and the curing behavior was studied. The suitability of these resins for high‐temperature curing fly ash coating applications was established. Coatings were formulated with these resins and with 40% fly ash as an extender. The coatings were characterized by standard techniques, particularly for their anticorrosive and antiabrasive properties. Resistance to corrosion was evaluated in humidity and in salt‐spray conditions. We conducted a high‐stress (two‐body) abrasion test to test the abrasive wear resistance of the coatings. The Mahua‐oil‐resin‐based fly ash coatings were suitable for application in moderately corrosive and abrasive environments. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 110–120, 2003 相似文献
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Diglycidyl ether of bisphenol A acrylate (DAC) and diglycidyl ether of bisphenol A methacrylate (DMAC) were synthesized by the reaction of an epoxy [diglycidyl ether of bisphenol A (DGEBA)] with acrylic acid and methacrylic acid, respectively. The synthesized resins were characterized by determination of the acid, hydroxyl, and saponification values. Structure elucidation was done by gel permeation chromatography, Fourier transform infrared spectroscopy, 1H‐NMR spectroscopy, and 13C‐NMR spectroscopy. DACs were cured with melamine formaldehyde resin at low pH values. The pH of the resin systems was adjusted with phosphoric acid. The coatings of these systems were formed on mild steel specimens for physicomechanical and chemical/corrosion‐resistance performance. The coatings of DAC and DMAC showed excellent scratch hardness and good impact‐resistance performance. The coatings of DMAC showed better performance than DAC with respect to chemical and corrosion resistance. Thermogravimetric analysis and differential scanning calorimetry were used to investigate the thermal stability and curing behavior of these systems. DAC showed a little higher glass‐transition temperature than DMAC and also showed a higher thermal resistivity. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 95: 494–501, 2005 相似文献
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结合溶液聚合和乳液聚合的优点,采用两步聚合法合成了一种水性羟基丙烯酸树脂,所制备的水性树脂外观良好,黏度适中。动态光散射结果表明所合成的水性乳液平均粒径为122 nm,粒径分布均匀。利用傅里叶红外光谱(FT-IR)对合成水性树脂的结构进行表征,结果表明得到了预定结构的产物。差示扫描量热仪(DSC)表明两步聚合的产物的玻璃化温度均为30℃左右,与实验设计相符合。利用所合成的水性羟基丙烯酸树脂与氨基树脂R-717配制烘烤型水性清漆,FT-IR谱图验证了固化反应的发生。固化后的水性清漆性能测试结果表明,漆膜光泽高、硬度高、附着力好,耐冲击性能优异,耐水性和耐乙醇性较好,与国外同类产品制得的清漆性能相当,可应用于车架、机械零部件及卷尺等工业防腐装饰领域。 相似文献