What is colloidal silica oxide?
Colloidal silica is a dispersion of silicon oxide liquid, the same material was naturally found in the sand. Like other colloids, it consists of microscopic particles evenly distracted throughout the fabric - in this case solid dispersed in the liquid. This mixture is known as Sol and has numerous industrial and commercial applications. Usually, the colloidal oxide is silicate monodispent, which means that all particles in Sol are the same size. The particles are chemically "grown" from small silica oxide core suspended in aqueous solution and can be large or small depending on the desired properties of the finished sol.
The large particles tend to create a mixture of silica more stable or probably remain in a scattered form. At high concentrations, smaller particles can form aggregates and make a mixture of Gooey and viscous. The size of the particles also affects the appearance of Sol and the mixture with small parts are more transparent.
Silica colloidal oxide is used in the amount of settings. Himthat be used as an abrasive or polishing agent for semiconductors, as a catalyst for different chemical reactions and as a coating. Silicon oxide coatings are useful to increase traction on surfaces such as floors and railway lines, as well as textile fibers. This is due to the abrasive action of small particles and their ability to chemically react with the opposite surface.
Papermarking is another area where silica colloid is widely used. Here, silica oxide acts as a drainage agent, which allows more starch to contain in the paper because the watery pulp is processed. Another starch increases the toughness of the paper.
In the production of wine and juice, silica colloid is used to improve the beverage by removing organic compounds from suspension. These compounds, which otherwise formed undesirable dirt in the drink or adversely affected the taste, attracted to o o o o opants charged particles in sol. Sediment about silica and dirt, which can then be mechanically removed, and leave behind the purified drink.
While in many industrial applications it is important to maintain the silica in its evenly scattered form, in other cases it is required to form clusters or particle chains. In this way, silicagels can be created, which are often used as drying in packaged products. When the pH of colloidal silica is reduced to less than 7 or salt is added, the particles in Sol begin to connect together and form chains. Finally, a silicagel is formed.