The hottest nano ink and nano Polish

2022-08-15
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Nano ink and nano Polish

first, nano ink

due to the strong UV resistance and catalytic properties of silicon dioxide and titanium dioxide at the nano scale, the sun resistance of nano modified ink synthesized by special processing chemical reaction can generally be improved by 2-3 grades, and the heat resistance and adhesion fastness are significantly improved. Nano ink is compatible with all aspects of performance. In the packaging and printing of products (especially food), many have high requirements for sterilization and preservation, while the traditional ink and packaging materials are blank in this regard. Nowadays, pure natural extruded materials can play an amazing bactericidal effect through the transformation of nanotechnology and the application of nano ink printing. Nano particles can replace chemical pigments to make printing inks, which are bright in color, pure in hue, non-toxic and tasteless. Nano ink is widely used in offset printing, gravure printing and flexo printing to make color cartons and cartons. In addition, the use of nano ink can significantly improve the quality of printing products

in printing materials (especially high-end color printing materials), product quality is closely related to the fineness and purity of ink. Only the ink with small fineness and high purity can print high-quality prints. Therefore, improving the purity and fineness of ink is also an important part of the study of new ink. The fineness of ink refers to the size of pigment (including filler) particles in ink and the uniformity of pigment and filler distribution in binder. It is not only related to the quality of prints, but also affects the printing plate's printing resistance. The process practice shows that the color printing products contain small negative words in the pattern printing or field layout, and the quality failure of the paste is easy to occur in the process of negative line printing. On the surface, it may be considered that the ink consistency is inappropriate, too much viscosity is caused by large waste, too much ink distribution or too much pressure. In fact, the real reason is that the ink particles are too thick. The fineness of ink is directly related to the properties of pigments and fillers and the size of particles. Generally speaking, the ink made of inorganic pigments (excluding carbon black) has poor fineness and coarser particles, which is closely related to the rolling process of the ink. The more times the ink is ground in the rolling process, the more uniform it will appear, the larger the contact surface between pigment particles and binder, the finer the ink particles, and the better and more stable its printing performance will appear

obviously, the fineness of the ink is closely related to the quality of the printed matter. For example, taking the printing plate as an example, there are 1-40% of the high-profile and middle tone on the plate. If the proportion of the ink particles and the electronic area is close, it is easy to make the dots empty or fluffy, and even appear the printing defect of electronic unsmooth. Therefore, the better the fineness of the ink, the clearer and fuller the dots on the printed matter are. In addition, the better the fineness of the ink, the greater its concentration, the stronger the coloring power, and the higher the printing quality of the product. The particle size of ink and pigment is coarse, and the friction coefficient is large in the printing process, so the printing plate's printing resistance is low. And the ink with coarse particles is also prone to paste and ink accumulation during printing, as well as uneven ink transmission and distribution. The fineness and purity of ink are very sensitive to the quality of printed matter. To print high-quality products, we must have high fineness and purity ink as a guarantee. Therefore, it is of great significance for the printing field to correctly understand the relationship between ink fineness, purity and printing quality, deepen the understanding of nano ink, and develop higher quality nano ink

because nano materials refer to the state that the material itself is highly ultra-small and ultra-fine, based on the various characteristics of nano materials, its application to the ink system will bring a huge boost to the ink industry. In 1994, Xmx, a Massachusetts company in the United States, successfully obtained a patent for nano-sized uniform particle raw materials used in the manufacture of inks. Then, Xmx company plans to design a commercial production system, and use this patent to select appropriate volume of nano particle raw materials to obtain various pigments of ink, instead of relying on the chemical pigments required by the old tradition to produce ink. It is also reported that the nano scale transparent iron oxide series pigments, which have recently been rated as national key new products by the Ministry of science and technology, have also been successfully developed. It will have an important impact on the upgrading of traditional pigments, mainly used in nano ink, nano water-based coating materials, etc. The typical needle like particle size of the material, with a long axis of 45 nm and a short axis of 6-7 nm, has good dispersion, crystallinity, weather resistance, high brightness and strong coloring power. Its successful development is of great significance to the renewal of traditional pigments in China, especially for the production of nano ink, which greatly improves the quality of ink

because the absorption of light waves by nano metal particles is different from that of ordinary materials, nano metal particles can fully absorb light waves and make themselves appear black. At the same time, in addition to the full absorption of light, nano metal particles can also scatter light. Therefore, using these characteristics of nano metal particles, nano metal particles can be added to black ink to produce nano black ink, which can greatly improve the purity and density of black ink. In addition, semiconductor nanoparticles exhibit certain characteristics of light absorption due to the significant quantum size effect and surface effect. The research shows that after the surface of nano semiconductor particles is chemically modified, the medium around the particles can strongly affect their optical properties, which is manifested in the red shift or blue shift of the absorption spectrum. Experiments show that the light absorption edge of CdS nanoparticles has a significant blue shift, and the absorption edge of TiO2 nanoparticles has a large red shift. Accordingly, if they are added to yellow ink and cyan ink respectively to make nano ink, the purity of yellow ink and cyan ink can be greatly increased. Using nano ink added with specific nano particles to copy and print color prints can enrich the layers of prints, make the tone more obvious, and greatly enhance the ability to show the fine image. 2. As a packaging section for food, drugs, textiles, precision instruments, electrical components, etc., high-quality prints can be obtained

nowadays, with the help of high and new technology, various components in the ink (such as resin, pigment, filler, etc.) can be made into nano raw materials. In this way, because they are highly fine and have good flow and lubricity, they can achieve better dispersion, suspension and stability, with less pigment consumption but high covering power. At the end of the experiment, the gloss is good, the resin particle size is fine, the film formation is continuous, uniform and bright, and the film layer is thin, making the printed image clear, If used in UV ink, it may lead to faster curing speed, and eliminate the shrinkage and wrinkling of the ink film due to the fine and uniform dispersion of the filler. In the printing ink of glass ceramics, if the inorganic raw materials are composed of nano fineness, it will save a lot of raw materials and print more beautiful images. It brings a great change to the ink manufacturing industry in terms of pigments. It no longer depends on chemical pigments, but selects nanoparticles of appropriate volume to present different colors. Because when some substances are at the nanometer level, the particle size is different and the color is different, or different substances have different colors, such as TiO2 and SiO2, which are white in nanoparticles, CR203 is green and Fe203 is brown. In addition, inorganic nano materials such as nano Al203 have good fluidity, which can greatly improve the wear resistance of the ink film if added to the ink. Nano carbon black has conductivity, which has a good shielding effect on static electricity and prevents electrical signals from being interfered by external static electricity. If it is added to ink, it can be made into conductive ink, such as high-capacity integrated circuits, modern contact panel switches, etc. In addition, if AG is made into nano scale instead of micron scale Ag in conductive ink, 50% of Ag powder can be saved. This conductive ink can be directly printed on ceramics and metals. The ink film is thin, uniform and smooth, and has good performance. If Cu and Ni materials are made into 0.1 ~ 1 μ M, which can conduct electricity instead of precious metals such as palladium and silver

in addition, some nano powder particles have their own light-emitting groups and can emit light by themselves, for example, "- n = n -" nano particles, etc. These new nano luminescent materials can self emit light in the dark for more than 12 ~ 24 hours after a few minutes of illumination. Their luminescent intensity and maintenance time are more than 30 times that of traditional fluorescent materials. The materials themselves are non-toxic, harmless, free of any radioactive elements, and have excellent stability and weather resistance. And it can be recycled for unlimited times. The printing products printed with the ink added with this kind of nano particles do not need the irradiation of external light sources, and can be recognized by the human eye only by its own light, which can also achieve a good first-line anti-counterfeiting effect for anti-counterfeiting printing. For large-scale outdoor advertising spray painting or night malicious graphic printing, there is no need for external light sources, which can not only save energy, but also greatly facilitate users. In addition, because nanoparticles have good surface wettability, they adsorb on the surface of pigment particles in the ink, which can greatly improve the lipophilicity and wettability of the ink, and ensure the stability of the whole ink dispersion system, so the printability of nano ink with nanoparticles has been greatly improved. It is believed that with the further development of nano material technology, the import volume will be 1.26 billion US dollars; In 2016, China imported 45.2% of waste paper from the United States, and more nano materials with different characteristics will be recognized and used by people. Applying these nano materials to ink manufacturing can obtain special inks with different uses, which can be used for confidential document printing, various anti-counterfeiting printing and printing of various handicrafts, and can achieve extraordinary good results

in the practical verification of nano pigment, the appearance color of nano pigment is much darker than that of submicron pigment. The main reason is that the particles of pigment are large, and the light will be broken through, so the light will scatter light, and a small part of the light will penetrate. However, nano pigments have small particle size, weak light scattering, smaller spectral absorption area, and less than 1% light reflectivity. Therefore, they are significantly darker than submicron pigments in color appearance. Nano pigments have a wide range of applications. Examples in life, such as inkjet inks, coatings, inks, photoelectric displays, etc. in the manufacturing process of products, adding a small proportion of nano pigments such as 3% to 5% can improve the masking rate, saturation, optical rotation resistance, water resistance and other problems of inks. In addition, in ordinary and color laser printers, the thickness of toner particles is an important factor that determines the output quality, and it is also a key to improve the printer resolution. Therefore, using nano materials to make carbon powder for laser printing, especially color laser printing, can greatly improve the quality of output. In addition, in the current color ink-jet printing, the problem of ink not only affects the printing quality, but also often leads to nozzle blockage and other failures. However, once the ink of nano materials is developed, it is believed that these problems can be well solved. Moreover, as the main printing equipment for digital printing and on-demand printing in the future, color laser printing and color ink-jet printing, nanotechnology will play an important role in this field

II. Nano UV varnish

paper packaging products, surface gloss treatment technology is

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