发展中的数码喷墨用UV固化油墨

应用UV固化油墨于数码喷墨 ,是 1种新兴喷印技术。文章针对数码喷印技术、油墨成分及其油墨的相应要求进行了阐述 ,文中涉及了现有的成型产品 ,并对UV固化油墨的发展趋势进行了展望 ,有助于人们了解这项新技术和新产品     

发展中的数码喷墨用UV固化油墨

数码喷墨用UV固化油墨是一种新兴喷印技术,文章针对数码喷印技术、油墨成分及其油墨的相应要求进行了阐述,文中涉及了现有的成型产品,并对UV固化油墨的发展趋势进行了展望,有助于人们了解这项新技术和新产品.     

光引发剂对数码喷墨用黑色UV固化油墨固化速率的影响

选用7种光引发剂配制数码喷墨用黑色UV固化油墨,实验结果表明,使用光引发剂2022的固化 速率最快;当光引发剂与胺促进剂复配时,UV固化油墨的固化速率有较大提高。     

紫外光固化喷墨技术及市场发展

紫外固化喷墨技术经过近几年的发展已成为一项成熟的新技术,本文介绍了紫外固化喷墨油墨的性能和特点、研究重点和UV固化喷墨油墨技术及应用的发展趋势。     

全球宽幅印刷市场中UV固化喷墨增长最快

美国赢船公司的研究项目表明包括硬件、油墨、材质和劳务合同的价值在内的整个宽幅UV固化喷墨印刷系统的总收入从2007年的10亿美元到2012年超过30亿美元,增长率达到24.7％。这就使UV固化喷墨是宽幅数码印刷市场增长最快的技术。     

油墨与相关技术

混合能量固化的溶剂型液态印刷油墨及其印刷方法,热变色书写油墨组合物,含无机填料的耐水涂料、涂覆的材料、喷墨印刷用材料及其进行热印刷,可形成高精密映象的光化学射线可固化的喷印油墨组合物,记录液体、油墨及其应用,记录液体、油墨及其应用,含水溶性染料和阳离子聚合物的喷墨油墨,可光化学射线固化的组合物、可光化学射线固化的油墨、用其形成映象的方法及喷墨记录设备,水性荧光油墨、油墨盒、油墨应用设备和方法,     

油墨与相关技术

阴离子和阳离子型喷印油墨混合物；紫外线固化喷墨油墨；含分散的着色剂的喷印油墨组合物及其制备；成像用的在特定时间后可以褪色的油墨；喷墨记录油墨；喷墨油墨；[编者按]     

油墨、粘合剂与相关技术

200902188压电元件、喷墨记录头和喷墨打印机;200902189水压转印、油墨组件、水压转印膜用可固化油墨组合物及用该组合物喷墨印刷的水压转印膜的制备;200902190含乳液的油墨组合物;200902191永久性油墨组合物及含该组合物的书写工具;200902192含环氧化不饱和脂肪酸酯的可阳离子辐射固化喷印油墨;     

紫外固化喷墨技术应用范围扩大

预计到 2 0 0 9年 ,紫外固化喷墨技术在一些非传统应用领域 ,如商业、装饰业、印刷业和包装材料部门应用的年均增长率将达到两位数。这项新技术的工业应用尚处于初始阶段 ,可使喷到介质上的油墨瞬间固化 ,使喷墨用于更多基质。紫外线固化油墨不含溶剂 ,挥发性有机物含量低 ,采用这项技术可在喷墨表面形成一层薄膜 ,使印刷品保持原有质量。此外 ,采用紫外固化油墨可最大限度地减少不同介质产生的图象之间的差别。紫外固化喷墨技术应用范围扩大@鲁青     

光引发剂与颜料对喷墨印花用UV固化油墨固化速度的影响

制备了含有品红颜料的喷墨印花用聚氨酯丙烯酸酯油墨的UV固化油墨为.选择了7种光引发剂,在实验条件下测试了其固色速度(时间)为1.97～8.65秒,当引发剂的含量为6%时,固化速度达到最大;当有机颜料的含量由1%上升到5%时,固化时间也由不足1秒上升为6秒.实验结果表明,颜料在油墨中的最佳含量为3%.     

含氟光固化单体的研究进展

紫外光固化技术在光固化涂料、粘合剂、和油墨印刷等领域应用广泛。含氟聚合物表面能低,疏水疏油,具有优良的耐候性,耐化学品性和抗污染性,这些优异性能吸引人们研究其在光固化领域的应用。本文综述了含氟光固化单体的种类,具体包括丙烯酸酯类、环氧类、聚氨酯类、全氟乙烯基醚类、超支链低聚物和混合光固化体系类。并对其合成方法和优缺点进行了分析讨论。     

Tuning of ultraviolet-curable ink printability via in situ ultraviolet irradiation during direct ink write applications

Direct ink write deposition facilitates line-by-line extrusion of inks spanning wide viscoelastic ranges. Following deposition, post processing technologies permit tuning of the extrudate's material property characteristics—ultraviolet (UV) irradiation, facilitating the photopolymerization of UV-reactive catalyst solutions, permits targeted modification of the extrudate's microstructure and in situ tuning of extrudate macrostructure. This report analyzes the morphological, rheological, and microstructural property relationships governing the printability, and processivity, of extruded UV-curable resin inks for delineation of sufficiency and optimization of ink printability utilizing direct ink write technologies. A design-of-experiments approach is implemented to quantify significance regarding an extrudate's dimensional response to extrusion parameter variation and in situ processing parameters, identifying proportionally of nozzle velocity, nozzle height, and UV irradiation exposure with extrudate aspect ratio, reflected by respective maximum extrudate aspect ratio increases of 158% and 109%, regarding 121 and 123K resin inks. Finally, the relationship between extrudate morphology and microstructure variation was assessed via dielectric cure monitoring, whereby an extrudate's ion viscosity was calculated in relation to its rheological modulus, reflecting the relationship between an extrudate's morphology, rheological response, and printability, regarding its microstructural variation.     

己二酸改性的环氧丙烯酸酯颜料润湿分散剂合成和应用

合成了己二酸改性环氧丙烯酸酯颜料润湿分散剂;分析了催化剂、合成温度、稀释条件等影响因素;综述了其在UV固化涂料和胶印油墨上的应用。     

Effect of chemical structure and shear force on the morphology and properties of jet printed black micropatterns using imide epoxy binders

Epoxy and epoxy acrylates with phthalimide groups on the main chain or pendent side chain were synthesized and used as binders for solvent‐free UV‐curable inks. Effects of chemical structures on the solubilities of binders in monomers, together with the influences of shear force and ink compositions on the morphology and nanoindentation properties of the microstripes were studied. PIK1 inks containing BAPSBD epoxy with phthalimide groups on the main chain showed shear‐thinning behaviors and pigment aggregation problems. Variations of the shear stress at different positions of the dispenser led to PIK1 microstripes with rough central regions and smoother edges. AMPDP acrylate with pendent phthalimide side chain afforded not only good solubility in monomers but also good thermal and mechanical properties after curing. Stripes prepared by the PIK2 ink containing AMPDP exhibited straight edge and smooth surface. Considering the solubility and compatibility in inks, together with properties of cured stripe, binders with pendent phthalimide groups are better candidate as UV‐curable ink compositions than those with main chain phthalimide groups. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

Curing behavior of a UV-curable inkjet ink: Distinction between surface-cure and deep-cure performance

Safety requirements and the need of low-migration UV inks have received increasing attention in the packaging industry. Crucial for the development and design of low-migration UV inkjet inks for migration-sensitive applications is the polymerization degree. In this study, curing-behavior of a black, high purity packaging ink (HPP-ink) was monitored using ATR-FTIR spectroscopy. UV irradiation of HPP-ink led to changes in specific absorption bands of the FTIR spectra due to crosslinking reaction of double bonds. Changes in absorptions bands at 1,408 and 1,321 cm⁻¹ permitted the determination of CC conversion of acrylic and vinyl double bond, independently of one another. In addition, a method was developed which allows the investigation of surface-cure and deep-cure behavior, separately.     

UV固化胶粘剂应用研究进展

论述了当前UV固化胶粘剂的应用现状,对UV固化胶粘剂配方中的主要原料预聚物、单体、光引发剂等的研究进展做了详细的阐述。     

紫外光UV固化粘合剂

紫外光固化粘合剂随着紫外光固化技术的发展获得了快速发展。详细介绍了紫外光固化粘合剂的应用机理及其组成成份 ,如齐聚物、反应单体、光引发剂。并列举了几种不同类型的紫外光固化粘合剂 ,即层压粘合剂、压敏粘合剂和双重光固化粘合剂等。     

Partial substitution of nitrocellulose by polyurethane resins in flexographic ink concentrates

The properties of flexographic inks obtained by the partial replacement of nitrocellulose (NC) resin with different amounts of polyurethane (PU) resins were evaluated for the statistical planning of mixtures to develop an optimum ink formulation. The formulations were developed using a statistical tool and they were found to present properties predicted by the tool. The results indicate that the substitution of the NC resin with PU resins leads to increased resistance of the ink film to delamination. The system obtained with the partial substitution of NC with PU has higher lamination bond strength than the pure NC-based system. The ink films of the formulations NC-based and NC/PU-based were evaluated by spectroscopy UV–vis, both inks have similar transparency of greater than 95% above 575 nm. When exposed to water, milk, and UV light, ink surfaces showed similar behavior in the atomic force microscope, Fourier-transform infrared spectroscopy, and UV–vis analysis. However, ink formulations with higher PU contents underwent higher photodegradation. Other properties such as the viscosity ink, gloss, coating strength, color, adhesion, and blocking of the NC/PU-based ink film did not vary significantly when compared to those of the standard ink produced exclusively with NC resin.     

A novel UV‐curable epoxy acrylate resin containing arylene ether sulfone linkages: Preparation,characterization, and properties

UV‐curing processes are used in industrial applications because of their advantages such as high‐speed applications and solvent‐free formulations at ambient temperature. UV‐curable epoxy acrylate resins containing arylene ether sulfone linkages (EAAES) were synthesized through the condensation of bis(4‐chlorophenyl)sulphone and bisphenol‐A, followed by end‐caping of epichlorohydrin and subsequently acrylic acid. UV‐cured coatings were formulated with epoxy acrylates, reactive diluents such as pentaerythritol tri‐acrylate and pentaerythritol dia‐crylate and photoinitiator. Fourier transfer infrared, ¹H NMR, and thermal gravimetrical analysis were employed to investigate the structures and thermal properties of the EAs films. The introduction of EAAES into epoxy acrylate substantially improves its thermal properties and thermo‐oxidative stability at high temperatures. In addition, the acrylate containing arylene ether sulfone linkages can also improve pencil hardness and chemical and solvent resistance of the epoxy acrylate. The obtained UV‐curable epoxy acrylate containing arylene ether sulfone linkages is promising as oligomer for UV‐curable coatings, inks, and adhesives in some high‐tech regions. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 41067.     

Behavior of UV‐cured print inks on LDPE and PBAT/TPS blend substrates during curing,postcuring, and accelerated degradation

During radiation curing, a reactive formulation is converted into a highly crosslinked coating film by means of polymerization reactions. This three‐dimensional (3D) network is resistant to external degrading factors as it cannot be undone by any physical–chemical means. In this study, various ultraviolet (UV)‐curable ink formulations with different pigments were developed. The behavior of the UV‐curable inks was evaluated during UV curing in a photocalorimeter or in a UV tunnel. Inks were exposed to accelerated aging in an accelerated weathering chamber and their physical–chemical properties were investigated. The presence of residual fractions of unreacted species trapped in the 3D network formed during UV curing interferes with the degradation of the main structure during exposure in the weathering chamber. The ink formulations that did not easily absorb UV light increased in gloss and hardness, indicating that residual crosslinking is taking place at the same time that degradation is occurring. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131, 41116.