14 Applications of White Carbon Black
Application in tires
Silica is used as a reinforcing agent, and the largest amount is in the rubber field, accounting for 70% of the total amount. Silica can greatly improve the physical properties of the rubber, reduce the hysteresis of the rubber, and reduce the rolling resistance of the tire without losing its anti-skid property.
Application in defoamers
There are generally two types of fumed silica: hydrophilic and hydrophobic. The hydrophobic product is obtained by surface chemical treatment of the hydrophilic product.
Application in paint and coating industry
Silica can be used as a rheological additive, anti-settling agent, dispersant, and matting agent in coating production, playing the role of thickening, anti-settling, thixotropy, and matting. It can also improve the weather resistance and scratch resistance of the coating, improve the adhesion strength between the coating and the substrate and the hardness of the coating, improve the aging resistance of the coating, and improve the ultraviolet absorption and infrared light reflection characteristics.
Application in electronic packaging
By fully dispersing the surface-active treated fumed silica in the silicone-modified epoxy resin encapsulation glue matrix, the curing time of the encapsulation material can be greatly shortened (2.0-2.5h), and the curing temperature can be reduced to room temperature, so that the sealing performance of the OLED device is significantly improved
Application in plastics
Silica is also often used in new plastics. Adding a small amount of silica during plastic mixing will produce a significant reinforcement effect, improve the hardness and mechanical properties of the material, thereby improving the processing technology and the performance of the product.
Application in ceramics
Using fumed silica instead of nano-Al2O3 to add to 95 porcelain can not only play the role of nanoparticles, but also be a second-phase particle, which not only improves the strength and toughness of ceramic materials, but also improves the hardness and elastic modulus of the material. The effect is more ideal than adding Al2O3.
Application in the papermaking industry
In the papermaking industry, fumed silica products can be used as paper sizing agents to improve the whiteness and opacity of paper, and to improve oil resistance, wear resistance, hand feel, printing, and gloss. It can also be used for drying drawings, which can make the surface quality of paper good, the ink stable, and the back without cracks.
Application in toothpaste
Precipitated silica is the main type of friction agent for toothpaste at present. Precipitated silica has a large total specific surface area, strong adsorption capacity, more adsorbed substances, and uniform particles, which is conducive to improving transparency. Because of its stable properties, non-toxic and harmless, it is a good toothpaste raw material.
Application in cosmetics
The excellent properties of silica such as non-toxicity, odorlessness, and easy coloring make it widely used in the cosmetics industry. Silica is used in skin care products and cosmetics to make the skin feel smooth and soft (“ball bearing effect”), and the “soft focus effect” produced makes the light irradiated on the skin surface evenly distributed, so that wrinkles and blemishes on the skin are not easily detected.
Application of white carbon black in rubber shoes
White carbon black has high blackness and fine particles. The vulcanized rubber made with transparent white carbon black has high transparency and can improve the comprehensive physical properties of the rubber.
Application in the pharmaceutical industry
White carbon black has physiological inertness, high absorbability, dispersibility and thickening properties, and has been widely used in pharmaceutical preparations.
Application in ink
Silica is also used to control the flow of printer ink so that it cannot flow or sag arbitrarily to obtain clear printing. In beverage cans, it controls the use of high-speed spray coating. Fumed silica is also used as a dispersant and flow control agent in the toner of copiers and laser printers.
Application in pesticides
Silica can be used in pesticides for herbicides and insecticides. Adding a small amount of fumed silica and precipitated silica to the mixture of two common herbicides, dinitroaniline and urea, will prevent the mixture from agglomerating.
Application in daily necessities
Food packaging bags with silica added can keep fruits and vegetables fresh. White carbon black can also be used as a highly effective fungicide to prevent and treat various diseases of fruits; in the production of alcoholic beverages, adding a small amount of white carbon black can purify beer and extend the shelf life.