印刷UV油墨的成分及性能

紫外光(UV)固化油墨是目前在印刷行业中被认为是环保、绿色、可持续发展的油墨。它具有很多的优越性,是未来油墨发展的大趋势,正被越来越多的印刷企业所使用。UV油墨的主要成分有光引发剂、单体、预聚物、颜料、稳定剂和其他助剂,主要对这些成分做简要介绍,然后简要探讨UV油墨品质的主要性能。     

适用于纸制餐具柔性印刷的环保UV光油的研制

利用正交实验设计方法,研制出一种新型的环保UV光油。将预聚物种类和比例、活性单体种类和比例、光引发剂种类以及比例和固化时间作为考察因素,以UV光油在纸制餐具基材上的附着力和耐摩擦性能作为因变量,得到最优的UV光油配方。选择聚氨酯丙烯酸酯(PUA)与环氧丙烯酸酯(EPA)作为预聚物,其比例为1∶1;选择活性单体TMPTA和NPGDA作为活性稀释剂,其比例为1∶2;选择自由基光引发剂和阳离子光引发剂作为混杂引发剂,其比例为1∶1。该配方为混杂光固化体系,兼具自由基光固化和阳离子光固化特点,固化程度高,活性单体和光引发剂残余少,有优良的附着力和耐摩擦性。     

印制电路板用液态UV感光成像油墨的研究进展

综述了影响印制电路板用液态UV感光成像油墨成膜的UV辐射固化装置及其最新的发展,以及涉及体系的感光预聚物、光引发剂、活性单体和热固性环氧树脂的发展状况。     

紫外光固化木器油墨的研制

本研究了颜料、单体及光引发剂的含量和齐聚物的种类对UV固化木器油墨的固化速度、硬度、附着力、耐磨损性的影响。结果表明，合理搭配使用各种组分能得到综合性能优异的UV固化木器油墨。     

UV光聚合法合成丙烯酸光敏树脂保护涂料

UV光源照射下光引发剂反应得到自由基或阳离子,进而引发丙烯酸酯类物质聚合生成光敏预聚物,后在光敏预聚物中加入交联单体、复合光引发剂等制得保护涂料。通过粘度、附着力、硬度及耐水性等测试以及热重、示差扫描量热分析研究了光聚合中功能单体、固化时复合引发剂及交联剂等对漆膜性能的影响。结果表明,光敏预聚物最佳聚合时间为110 s,粘度为26 s,单体转化率为16.9%。当预聚物的单体质量比m(IBOA)∶m(BA)∶m(AA)∶m(MMA)=15∶20∶12∶3,后期补加交联剂WDS-128的质量分数为18%,复合光引发剂质量分数为3%时,制得的漆膜综合性能最佳。     

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。     

单体和预聚物对UV喷墨油墨性能的影响

单体和预聚物对UV喷墨油墨的性能有很大的影响,本论文通过改变预聚物的种类和颜基比,制备色浆,测试了粒度及其分布,探讨了不同的预聚物和颜基比对UV喷墨油墨色浆分散性的影响,实验结果表明,用预聚物V100在颜基比为2:1时所制备的色浆具有良好的分散性;通过考察单一单体对UV喷墨油墨性能的影响,利用NPGDA、EOEOEA、DPGDA组成的混合单体稀释色浆制备成UV喷墨油墨样品,采用配方试验方法,得到UV喷墨油墨样品各项性能参数最佳的混合单体的比例为3:30:20。     

含超支化预聚物的UV固化胶粘剂

西南科技大学材料科学与工程学院以乙二胺、三羟甲基丙烷三丙烯酸酯（TMPTA）为主要原料,合成了外围带有8个双键的超支化预聚物,将此预聚物与不同官能度单体、光引发剂1173、KH-570等配成UV固化胶粘剂。经测试表明,由于超支化预聚物与一般线型预聚物结构不同,UV固化胶粘剂黏度较低,     

UV-LED水性网印油墨的制备与性能研究

采用单因素分析法,分析了UV-LED水性网印油墨材料组分和用量对油墨性能的影响,并通过正交试验分析,最终得出UV-LED水性网印油墨的配方为:预聚物为80%、光引发剂TPO为5.5%、染料为9%、光活化剂为3%、消泡剂为0.9%、表面活性剂为0.8%以及流平剂为0.8%。研究结果表明:制得的UV-LED水性网印油墨固化速率高,黏度符合标准,固含量和附着力优异,各项性能指标能满足网印的要求。     

华光YP-U型UV油墨印刷用PS版

UV油墨,亦称紫外油墨.UV油墨是将颜料分散到由预聚体、单体和光引发剂等物质组成的成膜物中,印刷时利用紫外线照射使油墨成膜并干燥. 在紫外光的照射下,UV油墨中的光聚合引发剂吸收一定波长的光子,激发到激发状态形成自由基或离子,再通过分子间能量的传递,使聚合性预聚体和感光络合体不断交联聚合固化成膜.     

紫外光固化涂料耐磨性的研究

讨论了影响紫外光固化涂料耐磨性的几个因素。结果表明涂料的耐磨性与树脂种类、单体官能度、光引发剂用量以及填料的种类、用量有关,并从理论上给出了相关解释。     

LCD用UV固化胶黏剂的研制

以聚酯多元醇、二异氰酸酯和丙烯酸羟乙酯为原料,合成聚氨酯丙烯酸预聚体,并在此基础上通过添加活性稀释单体、光引发剂等配制成UV固化胶黏剂。通过分析不同组分在LCD液晶灌注口密封及金属管脚固定的粘接性能影响,确定合成预聚体所需的聚酯多元醇种类及丙烯酸羟乙酯的合适用量,同时确定配胶所需活性稀释单体与光引发剂的合适用量。最后制得粘接性能好、耐候性能佳,可满足LCD产品生产工艺的性能要求的UV固化胶黏剂。     

Synthesis and characterization of palm‐based resin for UV coating

The production of UV curable acrylated polyol ester prepolymer from palm oil and its downstream products offer potential and promising materials for applications such as polymeric film preparation and coatings. In this study, palm olein polyol was reacted with acrylic acid in the presence of a catalyst and inhibitors via condensation esterification process. The reaction temperature of 80°C and the stirring rate of 400 rpm produce a homogeneous product. Based on iodine value result, the suitable amount of p‐toluene sulfonic acid monohydrate used as catalyst was 3.0% (w/w) of palm olein polyol. Different UV curable formulations have been investigated using the synthesized prepolymers with monomers and a small amount of photoinitiator. Monomers used were 1,6‐hexanediol diacrylate (HDDA) and trimethylolpropane triacrylate (TMPTA) while photoinitiator used was 1‐hydroxy cyclohexyl phenylketone (Irgacure 184). The mixtures were cured to make thin polymeric films under UV radiation with doses between 2 and 14 passes (energy per pass is 0.6 J/cm²). Coating and curing was carried out on glass for pendulum hardness and FTIR analysis. Pendulum hardness of the film prepared using monomer HDDA and the prepolymer previously synthesized using 3.0% catalyst was 24.5%. The radiation dose needed was 14 passes. The highest pendulum hardness of 49.4% was achieved using monomer TMPTA and the prepolymer synthesized using 2.0% catalyst. The radiation dose needed was 10 passes. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009     

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。     

UV涂料对光纤附加光衰减的影响

采用双酚A环氧丙烯酸酯(EA)和聚氨酯丙烯酸酯(PUA)共混,加入活性稀释剂、光引发剂、颜料等制备了紫外光固化光纤涂料。讨论了EA与PUA的配比,预聚物与活性稀释剂的配比以及光引发剂及颜料的含量对光纤带附加光衰减的影响。结果表明:当EA/PUA为1∶1.5(质量比),预聚物质量分数为52%,活性稀释剂质量分数为28%,光引发剂质量分数为14%,颜料质量分数为1.5%时,光纤具有最小的附加光衰减值。     

Synthesis of a novel alkaline-developable photosensitive copolymer based on MMA, MAA, SM, and 2-HEMA-grafted GMA copolymer for an innovative photo-imageable dry-peelable temporary protective plastisol

Methyl methacrylate, methacrylic acid, styrene and 2-hydroethyl methacrylate were used to synthesize copolymer with carboxylic acid group through free-radical polymerization to develop a prepolymer(PMMSH). Glycidyl methacrylate was then added to react with carboxylic acid groups of PMMSH to form photosensitive copolymer PMMSHgG. Nuclear magnetic resonance and infrared were used to confirm the structures and functional group of the prepolymer and the copolymer while GPC was employed to determine the molecular weight. The sensitivity and resolution of the copolymers were obtained through characteristic exposure curve and SEM observation, respectively. PMMSHgG was also mixed with dry-peelable plastisol, acrylic acid monomer, and photoinitiator to form a photo-imageable dry-peelable plastisol. A suitable peelable composition without scum after UV exposure and post-baking was identified.     

五金底材用UV固化涂料的配方设计

采用丙烯酸酯化的聚酯、二丙烯酸酯齐聚体、CAB551-0.01树脂为主要成膜物,以Irgacure184为光引发剂,研制成五金底材用UV固化涂料。讨论了预聚体结构、光引发剂及稀释剂等对涂层性能的影响,以及五金底材用UV固化涂料常见问题的解决。所配制涂料的综合性能良好,具有广阔的应用前景。     

Curing and combustion properties of a PU‐coating system with UV‐reactive phosphazene

A UV‐curable polyurethane (PU)‐coating system containing phosphorus is formulated by the combination of photoinitiator, PU acrylate oligomer, and UV‐reactive phosphazene monomer. PU acrylate oligomer is prepared by the addition of 2‐hydroxyethylmethacrylate (HEMA) to NCO‐terminated PU prepolymer. UV‐reactive phosphazene monomer is derived from the HEMA substitution reaction to hexachlorocyclotriphosphazene (NPCl₂)₃. The curing reaction of this PU‐coating system is carried out by UV irradiation. The resultant UV‐cured PU‐coated films demonstrated better performance properties than those of original UV‐cured PU acrylate (UV‐PU) without UV‐reactive phosphazene monomer. Furthermore, their thermal properties are investigated by a thermogravimetric analyzer and a dynamic mechanical thermal analyzer, respectively. The combustion behaviors of these UV‐cured PU‐coated films are evaluated by the measurements of a limiting oxygen index and a cone calorimeter. © 2002 Wiley Periodicals, Inc. J Appl Polym Sci 85: 1980–1991, 2002     

Synthesis of UV-curable acrylate polymer containing sulfonic groups for anti-fog coatings

A series of UV curable hydrophilic acrylate polymers containing sulfonic acid group was prepared via free radical copolymerization using 2-acrylamido-2-methyl propane sulfonic acid (AMPS) as hydrophilic monomer, which were used as prepolymers for anti-fog coatings. The expected structures were confirmed by FT-IR, ¹H NMR and gel permeation chromatography (GPC). These UV-curable acrylate polymers were then mixed with reactive diluents and photoinitiator to form coating formulas. Various substrates were coated with these formulas and cured under UV exposure to obtain transparent coatings with good adhesion and hardness. The anti-fog properties of UV-cured coating were measured by contact angle test and anti-fog test. The results showed that the AMPS content in prepolymer had a great influence on the anti-fog properties of UV-cured coating. The formula was optimized and the corresponding UV-curing anti-fog coating was manufactured. The test results indicated that the coatings showed good mechanical properties, great optical transparency and excellent anti-fog performance.