The Gospel and Change of Nano Materials for the Printing Industry

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Nowadays, nanomaterials have gradually penetrated into the ink manufacturing field of the screen printing industry, and have great advantages in improving the printing quality. Although the current process is still immature, experts predict that the popularity of nanomaterials will have an impact on the printing industry. In 1994, xmx Corporation of Massachusetts, USA, successfully obtained a patent for the manufacture of nano-scale homogeneous particulate materials for inks. Nowadays, nano-materials have gradually penetrated into the ink manufacturing field of the screen printing industry. 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 is well known that ink fineness is closely related to print quality. The finer the fineness of the ink, the stronger the tinting strength, and the clearer and more powerful the dots of the printed matter. Because nanomaterials are the finest materials in the current grain, nano inks have a particular advantage in fineness.

Conductor nanoparticles exhibit certain characteristics for light absorption due to significant quantum size effects and surface effects. Experiments have shown that some of the nanoparticles have a significant blue shift in the light absorption edge, and some of the nanoparticles have a large red shift in the light absorption edge. Accordingly, if they are separately added to the yellow and cyan inks to form nano-inks, the purity can be improved. Nano-inks with specific nano-particles are added for color printing. The color layer will be richer and the tone will be more vivid. It is similar to plasma technology used in TV screens, which can greatly improve the expressiveness of images.

Since the nano metal particles can completely absorb the light waves to make themselves appear black and at the same time have a scattering effect on the light, the nano metal particles can also be added to the black ink to improve the purity and density thereof.

In addition, since the nanoparticles have a 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, nano-inks with nano-particles can greatly improve the printing performance.

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 suspension and stability. Adding nano-scale raw materials to different types of inks for different purposes will result in different effects. If used in uv ink, it can speed up the curing speed and eliminate the shrinkage wrinkling phenomenon of the ink film; the nano-scale carbon ink has conductivity, and if the ink is added, it can be made into conductive ink; in the ink of glass ceramic, if The inorganic raw material composition is nanometer fineness, which will save a lot of raw materials.

There are also some specific nanoscale materials that, if added to the ink, can achieve some specific effects. Inorganic nanomaterials such as nano-al2o3 have good fluidity and can be greatly improved in wear resistance when added to inks. Some substances have different particle sizes and different colors at the nanometer level. This makes our color ink manufacturing no longer dependent on chemical pigments, but chooses different volumes of different nanoparticles to present different colors.

Nano inks can also be used for night light graphic printing. Some nanoparticles have their own luminescent groups and can emit light by themselves. The printed matter printed with the ink added with such particles does not require the illumination of an external light source, and can be recognized by the human eye by itself. If the ink is used for outdoor large-scale advertising printing or graphic reading at night, no external light source is needed, which not only saves energy but also greatly facilitates the user.

However, for nano-inks, we are still basically at the stage of paper talk. There is still a long way to go to the ink manufacturing and printing industries, but some experts predict that nano-ink will open up a vast new world for ink manufacturing. Bringing a new revolution to the world of ink and printing technology.

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