溶剂／颜料型喷墨油墨的制备及其性能的研究

利用物理分散手段制备了具有稳定分散性的溶剂/颜料型彩色数字打样用喷墨油墨样品,探讨了分散方法对颜料粒子分散性的影响以及油墨组分对其粘度、表面张力、电导率等性能的影响。研究结果表明,混合溶剂体系的表面张力可以通过各溶剂组分表面张力的算术平均数预测,快干溶剂和慢干溶剂分别影响喷墨油墨的初干性和彻干性,样品油墨的色域范围能够达到数字打样颜色再现的要求。     

丙烯酸酯单体结构对UV油墨的流变性和分散性的影响

油墨的印刷适性与其流变学性能和分散性密切相关,UV单体是影响油墨的流变学性能和分散性的主要因素。本论文使用不同UV单体研制了UV丝印油墨,重点探讨了TMPTA、EO3-TMPTA、PO3-TMPTA三种单体的结构对研制的UV丝印油墨的粘度、触变性、动态粘弹性和油墨细度的影响。     

聚醚胺接枝丙烯酸用于UV喷墨分散剂的研究

为了提高UV喷墨油墨的分散稳定性,利用高酸值固体丙烯酸树脂Joncryl 678和聚醚胺Jeffamine M2070进行接枝反应,制备了一种可用于UV喷墨油墨的超支化分散剂。实验结果表明,在一定范围内,随着聚醚胺比例的增大,聚合物的接枝程度增高,聚合物中游离羧基的数目减少,分散剂的酸值逐渐降低。由该超支化分散剂分别用于UV体系中钛白、酞青蓝、P.R. 122红、P.R.254红研磨,所得色浆分散性良好且具有良好的热稳定性,可以用于UV喷墨。     

颜料型水性纳米色浆的制备及性能研究

颜料型水性喷墨油墨的研究是当前喷墨技术的热门研究课题,其关键技术在于喷墨油墨体系中颜料的分散性、分散稳定性以及对黏度的控制,而纳米色浆的制备,则是其重中之重.该文从不同的颜基比和分散时长出发,设计了多种颜料型水性纳米色浆的制备方案,对色浆的粒径、黏度及稳定性进行了研究,确定了获取最佳分散效果的设计方案.     

UV油墨的制备与性能优化

探讨了预聚物、单体、光引发剂、颜料等组分对UV油墨固化速度、附着力、耐抗性等性能的影响,应用正交实验设计方法对UV油墨各组分种类进行选择,对正交试验结果做极差分析及方差分析,结果表明：根据预先设计的组分比例,采用预聚物PQ611,单体A,光引发剂B,活性氨为加速剂,获得性能较好的UV油墨。     

单体和预聚物对UV光油固化膜层柔韧性的影响

通过一系列实验研究,探讨了单体、预聚物以及相互比例对UV光油固化膜层柔韧性的影响。结果表明:使用双官能团单体制备的UV光油固化膜层的柔韧性最好;单体分子量越大,制备的UV光油固化膜层的柔韧性越好。预聚物对固化膜层的柔韧性影响更大,在实验使用的五种预聚物中,使用2491制备的UV光油固化膜层柔韧性最好。单体和预聚物的不同配比对柔韧性亦有明显的影响,单体和预聚物要有合适的配比才能使制备的UV光油固化膜层的柔韧性最佳。     

高分子分散剂对UV喷墨色浆分散稳定性的影响

为提高UV喷墨色浆的分散稳定性,对比研究了聚酯型和丙烯酸嵌段型高分子分散剂对UV喷墨色浆的颜料平均粒径、粒径分布、耐热稳定性及离心稳定性的影响。结果表明,当分散剂质量为颜料质量的20%时,UV喷墨色浆的分散稳定性较好。添加聚酯型分散剂和丙烯酸嵌段型分散剂的UV喷墨色浆粒径分别为207 nm和144 nm,颜料粒径分布指数(PDI)分别为0.312和0.200。加热5 d后,含聚酯型分散剂和丙烯酸嵌段型分散剂的UV喷墨色浆颜料平均粒径分别增加为原来的1.89倍和1.04倍。2种UV色浆的离心稳定性均在85%以上。     

UV固化漆酚改性环氧丙烯酸酯喷印油墨的研制

为了解决天然生漆不能喷印和快干固化的问题,用生漆对环氧树脂进行改性,在此基础上合成了一种新型预聚物——漆酚环氧丙烯酸酯。以该预聚物作为主要成膜物质,制备了UV固化漆酚改性环氧丙烯酸酯喷印油墨。配制出色浆基墨后,采用正交实验法,以喷头通过性、黏度、固化时间为测试指标,优选出UV喷印油墨的最佳配方。最后通过粒径分析和性能评价验证了优选配方,制备的UV固化漆酚改性环氧丙烯酸酯喷印油墨综合性能优异。     

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。     

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。     

塑料水性凹印油墨附着性能的研究

采用合适的颜基比和分散剂制备了塑料水性凹印油墨基墨,用与基墨具有良好相容性的树脂溶液调稀基墨,添加各种助剂以改善油墨样品的印刷适性,探讨了颜基比、树脂溶液、助剂对油墨附着力的影响。结果表明:基墨中颜基比为3:1、分散剂为1.5%时油墨在PET和BOPP塑料表面均有较好的附着力,制备油墨时,使用50%的AZ-3808树脂溶液并添加1.5%异丙醇或1.5%润湿剂时,油墨在PET塑料表面具有较好的附着力,使用50%的1424树脂和1437树脂的混合溶液并添加1.5%异丙醇时,油墨在BOPP塑料表面具有较好的附着力。     

Product design: Metal nanoparticle‐based conductive inkjet inks

A systematic procedure that provides an efficient workflow for formulating conductive inks is developed. Qualitative product attributes of the inkjet ink are first identified and transformed into quantitative product specifications. Ingredients are then selected based on heuristics, mechanistic, and empirical models to meet the product specifications. Printability checks based on theoretical criteria are used to ensure that stable droplets can in principle be formed and coalesced properly to form a printed line of ink. Then, the conductive ink is prepared and printed to evaluate the performance of the inkjet ink experimentally. An example of preparing a copper ink for inkjet printing is used to illustrate the systematic procedure. © 2016 American Institute of Chemical Engineers AIChE J, 62: 2740–2753, 2016     

Adhesion improvement of UV-curable ink using silane coupling agent onto glass substrate

In order to enhance the adhesions of the UV-curable inks onto glass substrate, the silane coupling agents were added into the mixture of monomer and oligomer. The monomer, containing high functionality or surface tension could lead to a high cross-link density of the polymeric network and low adhesions of UV-curable inks. With the amount of ethyoxyls of ethoxylated trimethylolpropane triacrylate increasing, adhesions of the oligomers were improved. As the monomer concentration increased, the adhesion ability of UV-curable ink onto glass was decreased. The adhesion ability of UV-curable inks onto glass was increased via adding silane coupling agents. When the concentration of the silane coupling agents was more than 12%, the adhesion ability of UV-curable inks onto glass was decreased. Silane coupling agents (3-methacryloxypropyl) trimethoxy silane (KH570) and (3-aminopropyl) triethoxy silane (KH550) were more effective than (3-glycidoxypropyl) trimethoxy silane (KH560) in the inks under the same concentration. Video microscope and scraper fineness test revealed that the pigment particles declined with the increase of grinding times, whereas the adhesions of UV-curable inks were enhanced.     

喷墨打印材料的制备及颜料用量对其性能的影响

为改善已有喷墨材料的吸墨性能,用SiO2@Al13核壳结构材料作为颜料制备吸墨材料;利用黏度杯、色差仪等进行测试,从涂料黏度、涂布量、涂布打印效果及色差四个方面,讨论了颜料用量对吸墨材料的影响。结果表明,颜料用量对吸墨材料性能影响显著,颜料的增加,利于材料吸墨,但不宜过高。颜料比例为75％时,材料性能优异。     

纳米金属喷墨导电墨水研究进展

喷墨印刷电子技术是电子及微电子行业未来的一种高效、绿色环保型生产技术。本文详细阐述了纳米金属喷墨导电墨水的制备及性能研究、墨滴控制、涂层后处理与应用4个方面的研究进展,说明了纳米金属喷墨导电墨水是未来喷墨印刷电子研究的关键技术之一,指出了纳米金属喷墨导电墨水目前存在的不足,如固含量与稳定性之间的矛盾、导电性能不理想等。并对喷墨印刷电子技术的发展提出了展望,指出其在RFID天线、印刷线路板、印刷电子产业领域有广阔的应用前景。     

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     

Pretreatment effects on pigment‐based textile inkjet printing – colour gamut and crockfastness properties

The application of two commercial pretreatment agents, formulated to improve the performance of a six‐colour nano‐scale pigment ink set during the textile inkjet printing of cotton and polyester (PET) fabrics, was examined. An industrial scale printer, operating at 55 linear m/h and equipped with Kyocera printheads, was used to print on commercial fabrics (180 cm wide) prepared for digital printing. The work employed an industrial scale rather than a benchtop printer to enhance the utility of the results for a commercial environment. The colorimetric attributes of printed fabrics were recorded for the individual inks as well as for spot colour combinations generated using Dr. Wirth RIPMaster v11 software. Colour table profiles were also generated and the colorimetric values of inks were compared. Colour gamuts of inks on cotton and PET, including three‐dimensional volumes in the CIELab space, were examined to assess the role of pretreatment on the colorimetric properties of the printed substrates. It was found that the pretreatments enhanced the ink receptiveness, colour intensity and colour gamut of fabrics. Pretreatment of cotton resulted in a larger gamut and more vivid colours than on PET. However, wet and dry crockfastness results were found to be low. In this regard, Time‐of‐Flight Secondary Ion Mass Spectrometry analysis of fabrics printed in the presence and absence of pretreatment indicated that the low crockfastness arises from higher pigment levels on the surface of the pretreated fabric.     

Colloidal properties of copolymer‐encapsulated and surface‐modified pigment dispersion and its application in inkjet printing inks

A styrene–maleic acid copolymer (PSMA)‐encapsulated 2‐[(2‐methoxy‐4‐nitrophenyl) azo]‐N‐(2‐methoxyphenyl)‐3‐oxobutyramide (PY74) dispersion was prepared by the phase‐separation technique. A surface‐modified PY74 dispersion was prepared with PSMA sodium as a dispersant by the milling method. Furthermore, the two dispersions were applied to formulate pigment inks. The colloidal properties of these two dispersions were compared. The printing and color performance of the prepared inks were also investigated. The results show that the PSMA‐encapsulated PY74 dispersion with a small particle size had higher stabilities of NaCl concentration, pH value, and temperature than the surface‐modified PY74 dispersion. The apparent viscosity of the PSMA‐encapsulated PY74 dispersion changed little, while it changed greatly in the surface‐modified PY74 dispersion with an increase of the shear rate from 10 to 100 s⁻¹. The ink printing and color performance of printed Fabrics indicated that the PSMA‐encapsulated PY74 dispersion was more suitable for the preparation of inkjet printing ink than the surface‐modified PY74 dispersion. © 2010 Wiley Periodicals, Inc. J Appl Polym Sci, 2011     

喷墨打印机颜料型油墨的最新进展

喷墨打印技术是一种非接触式的数字印刷技术,它将数码技术与传统的印刷技术合二为一。用于喷墨印刷的染料型墨水通常表现出差的耐光性和耐水性,因此将颜料引进到喷墨油墨中以克服染料型墨水的缺点是必然趋势。为了在低粘度下保持颜料稳定的分散,性能优异的合成分散剂对于获得稳定的颜料分散体是必不可少的。本文介绍了水性喷墨油墨的组分及各组分作用,对喷墨油墨的生产技术、发展前景进行了展望。