The gospel and revolution that nanomaterials bring to the printing industry

In 1994, Xmx Corporation of Massachusetts, USA has successfully obtained a patent for nano-scale uniform particle materials used in the manufacture of ink. Nowadays, nano materials have gradually penetrated into the ink manufacturing field of the screen printing industry. Recently, the domestic nano-grade transparent iron oxide pigments, which have been rated as national key new products by the Ministry of Science and Technology, have also been successfully developed.

As we all know, the fineness of ink is closely related to the quality of printing. The finer the ink, the stronger the coloring power, and the clearer and fuller the dots of the printed matter. Because nano-materials are the finest grain materials at present, nano inks undoubtedly have a special advantage in fineness.

Conductor nanoparticles exhibit certain characteristics of light absorption due to the significant quantum size effect and surface effect. Experiments have shown that some nanoparticles have obvious blue shifts in the light absorption edge, and some nanoparticles have a larger redshift in the light absorption edge. According to this, if they are added to yellow and cyan inks to make nano inks, their purity can be improved. Nano inks added with specific nano particles are used for color printing, the color gradation will be richer, and the tone will be more vivid. It is similar to the plasma technology used in TV displays, which can greatly improve the expressiveness of images.

Because the nano metal particles can absorb all the light waves and make them appear black, and at the same time have a scattering effect on the light, therefore, the nano metal particles can also be added to the black ink to improve its purity and density.

In addition, because the nanoparticles have good surface wettability, they are adsorbed on the surface of the pigment particles in the ink, which can greatly improve the lipophilicity and wettability of the ink, and can ensure the stability of the entire ink dispersion. Therefore, the printing performance of the nano ink with nano particles can be greatly improved.

Various components in the ink (such as resins, pigments, fillers, etc.) can also be made into nano-scale raw materials, because they are highly fine, and have good flow and lubricity, which can achieve better dispersion and stability. Adding nano-scale raw materials to different types of inks for different purposes will receive different results. If it is used in uv ink, it can accelerate its curing speed and eliminate the shrinkage and wrinkling phenomenon of the ink film; nano-scale carbon ink is conductive, and conductive ink can be made if the ink is added; in glass ceramic printing ink, if The composition of inorganic raw materials is nanometer-level fineness, which will save a lot of raw materials.

There are also some specific nano-scale materials, which can achieve some specific effects if added to the ink. Inorganic nanomaterials such as nano-al2o3 have good fluidity, and if added to the ink, they can greatly improve the wear resistance. At the nano-scale, some substances have different colors and different colors. This can make our color ink manufacturing no longer rely on chemical pigments, but select different volumes of different nanoparticles to display different colors.

Nano ink can also be used for luminous graphic printing. Some nanoparticles have their own light-emitting groups and can emit light by themselves. The printed product printed with the ink with such particles does not need external light source to illuminate and can be recognized by human eyes by its own light emission. If this kind of ink is used for outdoor large-scale advertising printing or graphic printing at night, no external light source is needed, which not only saves energy but also greatly facilitates users.

However, we are basically still in the stage of talking about nano inks, and it is still some distance away from being widely used in ink manufacturing and printing industries. However, some experts predict that nano inks will open up a vast new world for ink manufacturing. Bringing a new revolution to the world's ink and printing technology.