What is SiO2 nanoparticles used for?
Brazil, the world's largest coffee bean producer, recently announced that it is facing the worst drought in 91 years, affecting local hydropower generation and agricultural nano silica keeps going up.
The disadvantages of modern oxide ceramic products are brittleness and low finish. The addition of silica nanoparticles to ceramics can greatly reduce the brittleness of ceramic products and improve the toughness of ceramic products.
Traditional rubber products are made by adding carbon black to improve strength, wear resistance and aging resistance, and the color is single. Rubber products with novel color and excellent properties can be prepared by adding silica nanoparticles to rubber and making use of its excellent optical properties.
Because silica nanoparticles are resistant to ultraviolet radiation, adding them to the coating can improve its stability, weather resistance and thixotropy. In addition, it can also improve the adhesion between the film and the wall.
Silica nanoparticles have a wide application prospect in the textile field, mainly because of their anti-aging, anti-ultraviolet, anti-bacterial and deodorizing functions. The addition in the preparation of functional fiber can improve the anti-ultraviolet radiation ability of the product and have the effect of purifying air.
Silica nanoparticles have strong chemical stability and are not easy to decompose under ultraviolet light, which meets the requirements of cosmetics and sunscreen products to shield sunlight ultraviolet rays, and the color of the particles is white, so adding it to cosmetics can not only achieve sunscreen effect, but also achieve whitening effect.
Catalysts play an important role in chemical industry, especially heterogeneous catalysts with high reaction activity and reusability. The activity and selectivity of the catalyst determine the reaction rate of the chemical reaction and the yield of the reaction products, so in order to obtain a highly active catalyst, it is necessary to adjust the surface properties and structure of the catalyst carrier. Silica nanoparticles are not only chemically stable, but also have small particle size and large specific surface area. As a carrier, the catalyst can reach nanometer scale without agglomeration. Therefore, catalysts with low cost, high catalytic activity and long service life can be prepared.
Because of its small particle size, silica nanoparticles have large specific surface area, and special functional groups can absorb a variety of harmful substances after surface modification, so they are widely used in the field of environmental protection.
Silica nanoparticles not only have high stability, but also have biocompatibility and low toxicity, so they have good application prospects in the field of biomedicine, such as drug controlled release, gene carrier, biosensor and so on. The addition of silica nanoparticles to pharmaceutical preparations has been widely used, because the addition of silica is not only non-toxic and harmless, but also has the characteristics of high absorption, good dispersion and proper thickening. The fluidity of ranitidine, meglumide and valencil can be changed by adding a small amount of silica nanoparticles to the drugs.
A large number of unsaturated bonds and hydroxyl groups exist on the surface of nano-silica, and such a strong chemical adsorption film can be formed on the friction sub-surface. therefore, it can be used as a high-performance, high-environment-friendly lubricating oil additive to protect the friction surface of metal and improve the friction performance of lubricating oil.
The application of nano-silica in color inkjet printing can improve the printing quality, reduce the ink dot area, increase the color density and enhance the image fidelity, because of its excellent ink fixation performance and specific micropore network.
Nano-silica is an inorganic rigid particle, so it has the characteristics of toughening plastics. gas-phase nano-silica can improve the toughness or even rigidity of the material without weakening the rigidity of the material.
It is possible to prepare porous thermal insulation materials with high mechanical strength, energy saving, environmental protection and good hydrophobicity by using the thermal insulation properties of nano-silica, which is of great significance in military, industrial and other fields.
In the field of agriculture, nano-silica can be used as a seed treatment agent to shorten the growth cycle of corn, cotton, wheat and so on. In alcohol production, the addition of appropriate nano-silica can purify and prolong the shelf life, and can also be used as the carrier of efficient pesticides, anti-caking agent in feed and so on.
In the paper industry, it can effectively improve the whiteness, strength, wear resistance and opacity of the paper; high-grade nano-silica can also be used as a friction agent and drug shaping dispersant for toothpaste; as a matting agent, nano-silica can also partially replace expensive titanium dioxide in paints, inks, cosmetics, coatings and other fields.
Nano Silica Price
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Recently, Rosneft announced that a large oil deposit has been discovered in Bochao Lahai, with reserves equivalent to 82 million tons of oil. The discovery benefited from oil drilling in the Medinskova Landsky area. Rosneft pointed out that the discovery proves the great oil potential of the Timano-Bechula region, which will be the basis for the company to continue to research and develop the region.
In addition, Russian billionaire Vladimir Potanin, the largest shareholder of Norilsk Nickel, said recently that he was prepared to discuss the merger of Norilsk Nickel and aluminum giant Rusal.
"We have received a proposal from Rusal management to discuss a merger with Norilsk Nickel as an alternative to extending the shareholder agreement," Potanin said in an interview with Russia's RBC TV channel. I sent a letter confirming that we agreed to initiate discussions with Rusal on a merger. "
Potanin owns about 35 per cent of Norilsk Nickel. Norilsk Nickel is a major producer of nickel and copper and the world's largest palladium miner. Norilsk Nickel and Rusal had a market capitalization of $49 billion and $15 billion, respectively, as of Monday local time, according to Refinitiv Eikon.
Luoyang Tongrun Nano Technology is a trusted chemical manufacturer and supplier providing high-quality chemicals and Nanomaterials. If you are looking for the nano silica, please feel free to contact us and send an inquiry.