低温快干氨基丙烯酸聚氨酯涂料的研究

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。     

UV固化超支化聚氨酯丙烯酸树脂的研究进展

超支化聚氨酯是一种新型的功能性树脂,UV固化超支化聚氨酯丙烯酸树脂作为一种新型的涂料成膜物质,具有固化速度快、涂膜性能好、环境污染小等优点,对制备环境友好、性能优异的产品以及用其改性普通的UV光固化树脂具有实际意义,展现出良好的发展前景。本文就国内外有关UV固化超支化聚氨酯丙烯酸树脂的制备方法、固化动力学和固化流变行为等方面的研究工作进行了综述,并介绍了UV固化超支化聚氨酯丙烯酸树脂在改善涂膜力学性能和阻尼性能等方面的应用研究现状,提出完善UV固化超支化聚氨酯丙烯酸树脂的基础研究和在此基础上的相关产品的开发将是今后研究的主要发展方向。     

高性能多烯型紫外光固化水性聚氨酯的研制及应用

UV固化水性聚氨酯结合了UV固化的优点和水性聚氨酯的优点,未来有很好的发展前景。用季戊四醇与丙烯酸直接酯化制备季戊四醇二丙烯酸酯单体,研究了二者不同物质的量比对物质结构的影响,得到了最佳配比;通过FTIR和1HNMR谱证实了产物的结构。将季戊四醇二丙烯酸酯作为扩链剂,在聚氨酯分子的侧基引入双键,制得高性能UV固化水性聚氨酯树脂。讨论了不同物质的量比的季戊四醇和甲基丙烯酸羟乙酯对树脂中双键含量、树脂相对分子质量及对涂膜性能的影响。对研制的UV固化水性聚氨酯涂料进行了性能测试。     

UV固化聚氨酯丙烯酸酯涂料的研制及其应用

以丙烯酸羟丙酯(HPA)、1,6-己二异氰酸酯(HDI)三聚体为主要原料合成低相对分子质量三官能度聚氨酯丙烯酸酯(PUA)低聚物,以该低聚物为主体树脂,添加活性稀释剂、丙烯酸共聚体系、光引发剂及其他涂料助剂制成紫外光(UV)固化聚氨酯丙烯酸酯涂料。同时对UV固化膜性能进行研究,分别讨论了主体树脂含量、活性稀释剂含量、丙烯酸体系含量及光引发剂含量对UV固化涂膜性能的影响,进而对涂料不同组分的种类及配比进行优化,确定了紫外光(UV)固化聚氨酯丙烯酸酯涂料的工艺配方,研究结果表明:该涂料的玻璃化温度(Tg)为60.9℃,涂膜具有较好的综合性能。     

汽车修补用高固含超(快干)固化涂料的研究

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。     

低温快速双固化塑料涂层材料

2050羟基丙烯酸树脂与混醚化的氨基树脂、潜催化剂KC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交联得到的双固化低温快速固化塑料涂料,配合对树脂溶解性好而且还具有一定挥发梯度的专用稀释剂,所得涂料施工性能优良、可低温固化、交联密度高、初始硬度高、涂膜综合性能优异,可大大提高塑料件喷涂的生产效率。     

水性双组分聚氨酯涂料性能研究--丙烯酸树脂分散体对涂膜性能的影响

丙烯酸树脂分散体作为羟基组分与亲水改性多异氰酸酯配漆,制备水性双组分聚氨酯涂料,研究了丙烯酸树脂分散体的羟值、酸值、玻璃化转变温度等对涂膜性能的影响;用红外光谱仪表征了固化膜的结构,用扫描电镜观察了固化膜的表面形态.结果表明涂膜的机械性能较好,但耐化学品性和耐水性较差;羟值在100 mgKOH/g时性能较好.     

紫外光固化改性水性聚氨酯树脂的合成与性能研究

以聚乙二醇、甲苯二异氰酸酯、二羟甲基丙酸、丙烯酸-2-羟基乙酯为原料合成了一组紫外光固化水性聚氨酯丙烯酸酯树脂(PUA),考察了不同条件对合成反应的影响,研究改性聚氨酯涂层的光固化性能。结果表明:合成的改性聚氨酯树脂可作为水性紫外光固化涂料,光引发剂用量为3%、活性稀释剂TMPTA30%时光固化效果好。     

高固含丙烯酸聚氨脂涂料的开发与应用

采用高固体低粘度的多异氰酸酯固化高固体低粘度的羟基丙烯酸树脂的技术路线,制备的高光泽高丰满度的低污染环保型丙烯酸聚氨酯涂料,具有优异的耐化学品性及耐候性。介绍了该涂料的特点及制备工艺,并对影响该涂料性能的各种因素做了讨论。     

辐射固化涂料

具有好的耐候性、固化性和屏蔽性的光固化着色涂料组合物；具有好的UV屏蔽性的无机涂料组合物；辐射固化树脂组合物及固化的涂膜；辐射固化涂料及其应用；聚醚改性丙烯酸聚氨酯UV树脂的合成；[编者按]     

丙烯酸聚氨酯涂料用弹性固化剂的制备

介绍了一种用于丙烯酸聚氨酯涂料的弹性固化剂的制备方法,由其配制的丙烯酸聚氨酯涂料具有极强的附着力、耐候性和弹性,可抵抗混凝土表面的轻微裂纹。讨论了不同聚醚多元醇、不同脂肪族异氰酸酯、不同—NCO含量合成的固化剂对漆膜性能的影响。     

Effects of fluorine and silicon components on the hydrophobicity failure behavior of acrylic polyurethane coatings

Hydrocarbon acrylic copolymer was synthesized by a radical polymerization route. Fluorine-containing copolymer was prepared via a post-fluorine modification method. Hydrocarbon, fluorine-containing, silicon-containing, and fluorosilicone acrylic polyurethane coatings were prepared by curing reaction of the curing agents and mixtures of the synthesized copolymers and amino silicone, respectively. Indoor atmospheric environment, hygrothermal environment, different temperature environment, as well as xenon arc aging environment were employed to investigate the hydrophobicity failure behavior of the coatings. Chemical structure of the coatings was characterized by attenuated total reflectance Fourier transform infrared spectrum. Water contact angles of the coatings were monitored during the failure process. Thermostability of the coatings was explored by thermo gravimetric analysis. Surface morphology of the coatings was investigated by scanning electron microscopy. Elemental composition of the coating surface was analyzed by a X-ray photoelectron spectrometer. The results showed that the acrylic polyurethane coatings were prepared as expected. In addition, the modification mechanism determined the performance of the coatings in different environments. The fluorine-containing coating performed with better hydrophobicity in the indoor atmospheric environment, hygrothermal environment and low-temperature environment, but failed faster in the high temperature and xenon arc aging environments. The silicon-containing coating exhibited relatively stable hydrophobicity in the high temperature and the xenon arc aging environments. The hydrophobicity of the fluorosilicone coating fell in between that of the fluorine- and silicon-containing coatings under all of the experimental conditions. The fluorine-containing components improved the hydrophobicity of the coatings more effectively, while the silicon-containing components contributed more to the thermo and weather resistance property of the coatings.     

呋喃树脂—丙烯酸酯聚氨酯互穿网络防腐涂料的研究

呋喃树脂涂料具有优良的防腐蚀性能，但质地较脆，附着性较差。用丙烯酸酯聚氨酯对其改性，形成互穿网络（ＩＰＮ）结构，可提高涂层的柔韧性和附着性，同时保持其优良的防腐蚀性能。文中讨论了ＩＰＮ形成过程中两种交联反应时间的匹配方法和丙烯酸酯聚氨酯用量对涂料性能的影响，并比较了改性前后的涂料性能。     

水性紫外光木器涂料的研制

以水性UV丙烯酸酯树脂、水性UV脂肪族聚氨酯丙烯酸酯树脂为基料制备成水性紫外光木器涂料,经检测,水性UV涂装性能上大大得到改善,气味比普通UV涂料低、硬度比水性木器涂料高、表面效果与施工方法得到有效的改善,解决了水性木器、UV光固化涂料在喷涂技术领域遇到的技术瓶颈。     

双组分丙烯酸聚氨酯自成型橘纹漆花型改进

采用以低羟值丙烯酸树脂配合快干聚氨酯固化剂,添加中等吸油量的惰性填料,使涂膜既能形成橘纹骨架,又不过度消光.并添加适宜的触变剂,提供假塑性,优选助橘剂,调节表面张力,协同造成橘纹.研制成花纹一次均匀成型、花型较大的双组分自成型橘纹漆.讨论了各种因素对涂料性能的影响.试验结果表明：配制的双组分丙烯酸聚氨酯自成型橘纹漆,一道喷涂可成均匀橘纹,且有柔光效果.     

新型高固体分丙烯酸聚氨酯涂料的研制

合成了一种高固体分低黏度的羟基丙烯酸树脂,并详细讨论了引发剂、温度及溶剂等因素对树脂数均相对分子质量的影响。用该树脂和六亚甲基二异氰酸酯(HDI)缩二脲按一定比例配合,制得了高固体分丙烯酸聚氨酯涂料,该涂料各项性能优异。     

Studies on Performance of Cured Water-Borne Melamine–Acrylic Emulsion Coatings

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.     

塑料用水性涂料的研究进展

水性涂料作为一种环境友好型涂饰材料,具有广泛的应用前景.综述了水性丙烯酸、水性聚氨酯和UV固化3种主要的塑料用水性涂料的发展现状;介绍了目前存在的问题,并提出了其今后的发展趋势和研究方向.     

水性双组分氟丙烯酸—聚氨酯涂料的研制及性能测试

介绍了水性双组分氟丙烯酸-聚氨酯涂料所用原料及其预处理,水性双组分氟丙烯酸-聚氨酯涂料的羟基组分采用两步法合成:第一步合成了具有大分子表面活性剂性能的水性聚氨酯,在合成的过程中引入了双键和羟基组分;然后采用无皂乳液聚合的方法合成了以氟丙烯酸酯为核、聚氨酯为壳的水性树脂。并列举了采用该树脂与水性固化剂配合研制的清漆的性能指标,该清漆有着非常广泛的用途,讨论了影响涂料性能的各种因素。该双组分清漆水性含氟丙烯酸酯-聚氨酯清漆具有优异的综合性能。