水性紫外光固化树脂的研究进展

综述了近年来水性紫外光固化树脂及其涂料制备的最新研究进展.详细介绍了各类水性紫外光固化树脂的结构特点、制备方法及其在涂料中的应用情况,尤其对水性紫外光固化环氧树脂、聚氨酯树脂和超支化聚合物树脂等作了重点介绍,并展望了本领域的未来发展趋势.     

紫外光固化耐磨涂料的进展

综述了紫外光固化耐磨涂料的进展情况 ,着重介绍了溶胶 -凝胶法制备紫外光固化耐磨杂化涂料的研究进展。     

新型紫外线吸收剂1,4-二芳基-1,3-丁二炔类化合物的合成及其性能研究

本文以含有端基炔的芳硫醚为原料，碘苯二乙酯为氧化剂，氯化亚铜为催化剂，室温下反应30 min，合成了1，4-二（2-芳硫基苯基）-1，3-丁二炔化合物。通过¹HNMR、¹³CNMR等对其进行了结构表征，并研究了其光学性质，以及作为紫外线吸收剂在紫外光固化涂料中的应用。结果表明：该类化合物能够有效吸收270~360 nm的紫外光，且光降解程度小，并具有与树脂、单体相容性好、无气味等特点。同时，合成的目标化合物在光固化过程中不参与自由基体系的固化，且增强了涂料及固化涂层的光稳定性，有益于紫外光固化涂料的存储，是一类具有发展前景的紫外光吸收剂。     

保形涂料的研究进展

介绍保形涂料的固化机理,比较了各类光固化保形涂料及其修复方法,综述紫外光固化保形涂料的研究进展。     

紫外光固化涂料简介

本文简介感光性高分子的紫外光固化涂料的发展简史、固化机理及发展方向。     

紫外光固化涂料简介

本文简介感光性高分子的紫外光固化涂料的发展简史、固化机理及发展方向。     

紫外光固化涂料简介

本文简介感光性高分子的紫外光固化涂料的发展简史、固化机理及发展方向.     

一种O-双酰基-α-氧代肟的制备及光引发性能研究

光固化是辐射固化中应用最为广泛的一种固化技术,光固化涂料是60年代末由德国开发的一种节能环保型涂料,该涂料受到紫外光照射后,发生光化学反应,使涂层快速聚合、交联,从而达到涂层固化的目的。光固化涂料作为一种新型固化技术涂料而获得了迅速发展。     

可聚合纳米无机氧化物杂化材料的制备及其在紫外光固化涂料中的应用

可聚合纳米无机氧化物杂化材料在紫外光固化涂料中具有较好的分散性能.与涂料中的单体和预聚物进行光聚合形成有机/无机杂化网络结构的聚合物,从而提高涂料固化膜的热稳定性能、硬度和耐磨性能等,在紫外光固化涂料的制备方面有着广阔的应用前景.目前,该类杂化材料主要采用硅烷偶联剂改性、化学接枝改性和溶胶一凝胶方法制备.本文就可聚合纳...     

紫外光固化粉末涂料

紫外光（UV）固化粉末涂料综合了传统粉末涂料和辐射固化技术诸多优点，是涂料工业的前瞻性产品。本文介绍了紫外光固化粉末涂料的配制，固化机理，涂装工艺及潜在应用，并对其最新研究进展进行了综述。     

Characterization of a clear coating cured by UV/EB radiation

The quality and performance of the polymeric materials cured by ultraviolet (UV)/electron beam (EB) radiation depends on the components of coating formulation, as well as the type of radiation used in the curing process. The aim of this study was to establish the correlation between the cure degree of a clear coating irradiated with different radiation doses of UV or EB and the tensile properties of the polymeric films obtained. The cure degree was measured by DSC and FTIR.     

紫外光-热双固化聚苯胺防腐涂料

以酸性磷酸酯为掺杂剂对本征态聚苯胺(EB)进行掺杂,制备了可在聚氨酯和聚氨酯丙烯酸酯中进行纳米分散的导电聚苯胺(ES),其粒径分布在80~750 nm之间可控。 在此基础上,制备了不含重金属的紫外光-热双固化聚苯胺防腐涂料。 该防腐涂料先后经过3~5 s紫外光固化和80 ℃下1~3 min的热固化,即可完成紫外光-热双固化过程。 由于ES与聚氨酯或聚氨酯丙烯酸酯之间是不相容体系,因此随着ES质量分数的增大,会导致ES的团聚,分散粒径增大。 当ES质量分数从1.0%增大到5.0%时,ES的粒径从80~119 nm增加到500~750 nm。 ES的分散粒径增大会导致防腐涂层的致密性变差,降低防腐效果。 与普通紫外光固化聚苯胺防腐涂层相比,当ES为1.0%时,紫外光-热双固化防腐涂层在质量分数为3.5%的NaCl水溶液中浸泡2160 h后,其0.1 Hz下的绝对阻抗值(|Z|_{0.1 Hz})仍高于1.0×10⁸ Ω·cm²,优于普通紫外光固化聚苯胺防腐涂层的|Z|_{0.1 Hz}(1.0×10⁷ Ω·cm²),表明紫外光-热双固化涂层的防腐效果有了显著改善。 经过500 h划叉中性盐雾试验后,普通紫外光固化防腐涂层的板面出现了锈蚀宽度小于1 mm的锈蚀,而紫外光-热双固化防腐涂层经过500 h划叉中性盐雾试验,板面没有出现生锈、起泡的现象,表明紫外光-热双固化路线对提高涂层的防腐性能具有较大的价值。     

Novel UV-protective formulations for cotton, PET fabrics and their blend utilizing irradiation technique

A novel coating formulation to impart ultraviolet (UV) protection property to cotton, Polyethylene trephethalate (PET) and cotton/PET fabrics was prepared and gamma rays as an ionizing radiation was utilized for surface curing. Natural occurring aluminum potassium sulfate (Alum) was used individually and in binary coat with Zinc Oxide (ZnO), to induce the UV-blocking properties. It was found that using Alum (0.3 g/ml) caused a prompt increase in ultraviolet protection factor (UPF) over the uncoated fabrics. Moreover, the incorporated ZnO in the binary coat increased the UPF for two to threefold than the stand-alone Alum coating, specially in case of PET coated fabric. Water absorbance and moisture regain of ZnO and Alum/ZnO coated fabrics showed a decrease over the blank samples, due to the usage of oligomer/monomer combination. On contrary, Alum showed a hydrophilic effect with the increase in its content in the formulation. Surface Electron Microscope showed the homogenous coating of fibers. X-ray diffraction (XRD), energy dispersive X-ray (EDX) and water vapor permeability were also tested for coated samples.     

Sunlight curable hybrid organic–inorganic methacrylic‐based coatings: analysis of the cure mechanism and functional properties

An experimental ultraviolet (UV) polymerizable hybrid organic–inorganic protective coating, mainly intended for the surface protection of porous calcareous stone substrates, has been recently proposed and patented. The hybrid product evidenced an extraordinary hydrophobicity character, able to guarantee a high protection of the stone against water actions, as well as a high traspirability. Furthermore, it is able to equal the performance of commercial available coatings, with the important adjunctive advantage to be free solvent. The application of this product involves the use of a “dual curing” treatment, necessary to harden the coating applied on the substrate, representing this latter a technological limit. The dual curing treatment consists of 6 hr of exposure to a UV‐lamp plus 1 hr at 140°C in oven. In order to avoid this procedure, not easy to realize in situ, two different modifications of the composition of the hybrid product are proposed in this paper. The first one allows the photopolymerization of the hybrid coating only by sunlight exposure. The second one, even though requiring a UV exposure to photo‐polymerize the coating, does not need the subsequent thermal treatment at 140°C. Several experimental characterizations were performed on the newly developed hybrid products, in order to select an optimal composition for the formulations. The selected innovative products were, finally, applied on a calcareous stone substrate, typical of Apulia Region (Pietra Leccese, PL). Both coatings exhibit excellent water‐repellent action and a slight variation of the natural stone color. Copyright © 2014 John Wiley & Sons, Ltd.     

Accompanying of parameters of color,gloss and hardness on polymeric films coated with pigmented inks cured by different radiation doses of ultraviolet light

In the search for alternatives to traditional paint systems solvent-based, the curing process of polymer coatings by ultraviolet light (UV) has been widely studied and discussed, especially because of their high content of solids and null emission of VOC. In UV-curing technology, organic solvents are replaced by reactive diluents, such as monomers. This paper aims to investigate variations on color, gloss and hardness of print inks cured by different UV radiation doses. The ratio pigment/clear coating was kept constant. The clear coating presented higher average values for König hardness than pigmented ones, indicating that UV-light absorption has been reduced by the presence of pigments. Besides, they have indicated a slight variation in function of cure degree for the studied radiation doses range. The gloss loss related to UV light exposition allows inferring that some degradation occurred at the surface of print ink films.     

辐射固化材料的现状和某些进展

介绍近年来UV/EB固化材料的发展进展,其中包括北美、欧洲、日本的发展概况和重大的新进展:(1)稀释单体和预聚体;(2)水基UV/EB固化;(3)阳离子光固化;(4)辐射固化粉末涂料;(5)复合固化体系;(6)UV固化纳米涂料;(7)光引发剂;(8)计算机直接制版.     

腰果酚的紫外光固化机理和固化膜性能

研究了腰果酚在无光引发剂条件下的紫外光固化反应,并用IR、UV、元素分析、GPC等分析手段分析了腰果酚的紫外光固化机理及其固化膜性能。结果表明:在紫外光辐照下,腰果酚通过侧链发生氧化聚合反应,和酚羟基的邻对位失去质子形成的自由基引起的苯环缩合反应,最终形成体型高聚物。腰果酚的紫外光固化膜的常规物理机械性能、抗溶剂性、耐化学介质腐蚀性、热稳定性和抗紫外线性能均优于腰果酚醛缩聚物(PC)涂膜。     

EB/UV treatment of protective coatings for porous materials

A method for improving surface properties of porous inorganic materials is presented. The method is particularly tailored to cement-based materials in order to obtain properties suitable for mechanical applications such as dies manufacturing, where hardness, abrasion resistance and low friction are requested. The coating system is based upon using two coatings of different characteristics. The underlying base coating layer is infiltrated in air on three different formulations of hardened cement composite. Two different bi-component resins, one relatively soft and the other relatively hard, were tested as underlying surface coating. The outer surface coating, based upon a bi-component resin characterized by high hardness, is added after hardening and curing of the first layer. Both coatings were chemically hardened and then cured with EB. UV curing is also suitable for the outer surface coating. An experimental campaign was carried out in order to evaluate the influence of radiation processing as curing treatment with reference to particular investigated materials. Hardness and resistance to peeling of coating systems have been measured and are presented.     

Development and characterization of transparent waterborne polyurethane acrylate/fullerenols thin-film nanocomposite as thermal-insulating coating

Thermal-insulating coating can lower the energy consumption and cooling costs, which caters to the tendency of environmental protection and energy conservation. Transparent waterborne polyurethane acrylate thin-film nanocomposite was developed by incorporating the fullerenol C₆₀(OH)₁₂(ONa)₂ into the system using ultrasonic dispersion. The thin-film nanocomposite was then synthesized by ultraviolet radiation curing and chemical crosslinking, and its morphology and chemical structures were characterized. Thermogravimetric analysis and differential thermal gravity were used to evaluate the thermal stability. The surface and mechanical properties were tested by the pendulum hardness and MEK resistance. The optical and thermal-insulating properties were assessed by the ultravioletvisible-near infrared spectrophotometer and indoor environmental simulation experiment. The thermal-insulating measurements showed that the glass coated thin-film nanocomposite possessed better thermal-insulation effect than empty glass.     

Development of hard materials by radiation curing technology

For studying nanoglobular modification effects in radiation cured polymeric composites, we prepared polymerization active silico-organic nanoparticles. With their polymerization active ligands, these nanoparticles form crosslinks by modifying the viscoelastic properties in radiation cured polymeric nanocomposites. In this process, there was a polymerization activity imparted to the particle surfaces of nanopowders, thus applying the physico-chemical modification scheme of a heterogeneous copolymerization to novel scratch and abrasion resistant coatings. By varying the nanoparticle-monomer formulation and the curing method, additional property can be achieved. In this works, we also investigated the influence of various factors such as addition of photoinitiators and other additives into the formulations. The coating materials were applied to the substrate by using different type of coaters. These materials were cured by ultraviolet light and electron beam irradiation. Properties of coatings were characterized using Universal scratch tester and Taber abrasion tester.