UV固化粉末涂料

讨论了UV固化粉末涂料超越传统热固性粉末涂料的优点。介绍了UV固化粉末涂料的组成、特性、制备及施工工艺。     

UV固化涂料

UV固化反应属于能量引发聚合反应,在光引发剂存在下,成膜物经自由基反应几秒钟可形成交联固化涂膜.UV固化涂料可分为水性UV 固化涂料、UV固化粉末涂料和溶剂型UV固化涂料.本文重点介绍UV固化涂料的固化体系,UV固化粉末涂料、水性UV固化材料和溶剂型UV固化涂料.     

UV固化粉末涂料

UV固化粉末涂料是粉末涂料的新宠，发展迅速，前景诱人。本文简要介绍UV固化粉末涂料的组成。涂装方法、固化机理和应用领域。     

UV固化粉末涂料的发展

UV固化粉末涂料由于其效率高、使用温度低、施工速度快等特点，在装饰应用领域发挥着越来越重要的作用。本文讨论这一新兴领域中的关键技术挑战，并回顾最近的发展状况。将UV固化粉末涂料与其它涂料进行了比较。还展望了UV固化粉末涂料的潜在应用领域。     

紫外光固化涂料及其研究进展

介绍了紫外光（UV）固化涂料的特点及固化机理，综述了UV固化纳米涂料、UV固化有机硅涂料、UV固化超支化聚合物涂料等改良型UV固化涂料以及UV固化水性涂料和UV固化粉末涂料的研究进展。     

紫外光固化粉末涂料及其应用

粉末涂料是无溶剂的环保型涂料,具有工艺简单、节约能源、无污染、生产效率高等优点,但也存在加工温度高、固化时间长、不能在热敏基材上使用等缺点。而UV固化粉末涂料恰恰可以克服上述缺陷,具有更多优点。UV固化粉末涂料集热固粉末涂料和UV固化液体涂料的技术优势于一体,具有更高的经济优势和生态优势。     

木质地板用环氧树脂粉末涂料研究进展

对木质地板用环氧树脂粉末涂料的研究进展进行分析。主要从三个研究方向即UV固化环氧粉末涂料、双重固化体系和对传统环氧树脂粉末涂料及其固化剂的改性,对木质地板用环氧粉末涂料低温固化技术进行了探讨。     

UV固化粉末涂料

用UV光而非用热来固化粉末涂料开辟了粉末涂料在更广泛应用领域的新机遇，由于快速固化周期和低温固化的要求，UV粉末涂料提供了许多重要的利益，包括省时，省场地，节能，生产率高以及能在热敏感底材上应用等。     

UV固化技术在涂料中的发展前景

综述了粉末涂料的特点、UV固化技术的优点和两者结合的优势 ,指出了 UV固化技术在涂料中发展的前景。     

近年来辐射固化材料的研究进展

综述了光化学、光自由基聚合、光引发剂UV固化、UV固化剂、电沉积光敏抗蚀剂和涂料、UV水基和粉末涂料及UV固化纳米复合材料的研究进展。     

Epoxy acrylate UV/PU dual‐cured wood coatings

For improving the finishing performances of complicated three‐dimensional coated wood products (e.g., furniture) with some shadow zones in the absence of ultraviolet (UV) light, resulting in incomplete curing of UV coatings, the aim of this study was to investigate the characteristics and effects of curing process on the properties of epoxy acrylate UV/PU dual‐cured resin for wood coatings when compared with traditional UV and polyurethane (PU) coatings. The epoxy acrylate oligomer was synthesized for providing a double bond of acryloyl group and a secondary hydroxyl group. The UV/PU dual‐cured coating was formulated with epoxy acrylate resin/tripropylene glycol diacrylate (TPGDA) monomer by the weight ratio of 80/20, 3% dosage of benzil dimethyl ketal as a photoinitiator, and the NCO/OH mole ratio of 1.0. The aromatic polymeric diphenylmethane diisocyanate was used as a hardener. The films of the dual‐cured coating, obtained from UV‐cured or room temperature‐cured process, showed an excellent tensile strength, elongation at break, impact resistance, and lightfastness when compared with traditional UV and PU coatings; especially, the adhesion of UV/PU dual‐cured coating by UV‐cured process was better than that of traditional UV coating. It can therefore be concluded that the epoxy acrylate oligomer‐based dual‐cured coating could readily be used for complicated wood products finishing. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010     

UV固化不饱和聚酯树脂在涂料中的应用研究

以不饱和聚酯为光敏预聚物,加入光引发剂制得天然大理石表面紫外光固涂层(流水线作业)。研究了光引发剂用量对涂层性能的影响,并将UV固化与化学固化浇注体的力学性能和耐热性进行了对比。结果表明,紫外光固化不饱和聚酯树脂涂层的固化效果,硬度和亮度都达到化学固化的效果,且生产效率大大提高。     

Synthesis and characterization of urethane vinyl ether crystalline monomers

UV powder coatings combine the advantages of both conventional thermoset powder coatings and liquid UV‐curing coatings. In this paper, a series of crystalline monomers based on urethane vinyl ether have been synthesized by reaction of hexamethylene diisocyanate (HDI) with hydroxybutyl vinyl ether (HBVE) or together with a saturated alcohol such as 1‐octanol, 2‐butoxy ethanol and 2‐ethoxy ethanol. The crystallinity of the monomers was characterized by DSC, WAXD and polarizing microscopy. It was found that the melting point of the monomer can be expediently adjusted to an adequately low level by changing the type and/or the amount of the saturated alcohol added during the synthesis procedure. Thus, when 20–40 mol% of HBVE was replaced by a saturated alcohol, the melting point decreased to around 75–90 °C, which is suitable for UV‐curing powder coating formulations. Copyright © 2006 Society of Chemical Industry     

高性能聚氨酯粉末涂料的研究

比较了不同聚氨酯粉末涂料固化剂的性能,考察了催化剂对胶化时间的影响,介绍了一种制造消光聚氨酯粉末涂料的方法,该方法所制得粉末涂料固化后涂层平整光滑、物化性能优异,可以调整出各种光泽的涂层,并且在生产过程中光泽比较稳定,重现好。     

Coating performance and characteristics for UV-curable aliphatic urethane acrylate coatings containing norrish type I photoinitiators

The purpose of this study was to investigate the influence of several Norrish I (α-cleavage) type photoinitiators and UV dose on the curing behavior and coating performance of UV-curable aliphatic urethane acrylate coatings. UV-curable coatings were cured under a high-pressure mercury lamp. The curing behavior and coating performance of the UV-curable coatings that were cured using 2-hydroxy-2-methyl-1-phenyl-propan-1-one or 1-hydroxy-cyclohexyl-phenyl-ketone were superior to those of the UV-curable coatings cured using bis (2,4,6-trimethylben-zoyl)-phenylphosphine oxide or diphenyl (2,4,6-trimethylbenzoyl)-phosphine oxide, when the UV-curable coating was cured in air. Current address: Electronic Chemical Materials R&D Center, CHEIL Industries Inc.     

低温固化GMA丙烯酸粉末涂料的开发与应用

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。     

Cure behavior of polyester-acrylate hybrid powder coatings

Interest in finding alternatives to TGIC-based powder coatings have driven development of alternate binders for the exterior durable powder coating market. Thermoset powder coatings utilizing carboxylic acid functional polyester resins cured with epoxide-functional acrylate polymers have been evaluated and characterized. Modification of the composition and molecular weight of either component influences the physical properties of formulated powder coating. The behavior of these coatings during the cure process has been investigated and compared with polyester/TGIC systems. 2400 Ellis Rd, Research Triangle Park, NC 27709.     

Tuning the mechanical performance and adhesion of polyurethane UV cured coatings by composition of acrylic reactive diluents

An approach to modify the properties of UV curable polyurethane coatings by altering the amount and functionality of acrylic reactive diluents, in order to optimize the coating performance, is demonstrated. Based on the rheology analysis, a model of the rheological behavior of the UV curable materials depending on the amount and type of a reactive diluent in the composition is demonstrated in this study. The relationships between the rheological behavior, the mechanical properties and adhesion of the coatings prepared from polyurethane UV curable compositions containing different amounts and functionalities of acrylic reactive diluents, have been investigated and discussed in this study. Based on the results of the study, the desired properties of UV cured coatings can be modeled and controlled without changing the nature of a particularly selected oligomer, thus maintaining the advantages of its chemical structure in a coating composition.     

UV固化丙烯海松酸聚氨酯丙烯酸酯的合成及应用

以2,4-甲苯二异氰酸酯(TDI)、丙烯海松酸二甘醇聚酯二元醇和丙烯酸羟丙酯(HPA)为主要原料合成了可紫外光固化的涂料用丙烯海松酸聚氨酯丙烯酸酯(APAPUA)低聚物。对产物进行了红外表征,并考察了其光固化行为。测试了APAPUA固化膜的硬度、柔韧性及其他力学性能,同时考察了其热稳定性。结果表明,该低聚物固化膜铅笔硬度达到4H,附着力1级,耐冲击性55 cm,初始分解温度245℃,具有固化速度快,力学性能及耐热性优良等特点,可以作为价格低廉的耐热性低聚物应用于光固化涂料。     

UV固化粉末涂料组成与性能的研究

采用功率热补偿型扫描量热仪和INSTRON32 11毛细管流变仪测定了UV固化粉末涂料用主体树脂的玻璃化温度 (Tg)和流变性能 ,研究了该涂料中不同光引发剂体系对涂料光固化性能和涂膜物理性能的影响 ,及添加不同纳米材料对涂料涂膜物理性能的影响。