The main component of diatomite as carrier is SiO2. For example, the active component of industrial vanadium catalyst is V2O5, the cocatalyst is alkali metal sulfate, and the carrier is refined diatomite. Experiments show that SiO2 stabilizes the active components and strengthens with the increase of K2O or Na2O content. The activity of the catalyst is also related to the dispersion and pore structure of the support. After diatomite is treated with acid, the content of oxide impurities decreases, the content of SiO2 increases, and the specific surface area and pore volume also increase. Therefore, the carrier effect of refined diatomite is better than that of natural diatomite.

Diatomite is generally formed from silicate remains after the death of unicellular algae collectively known as diatoms. Its essence is aqueous amorphous SiO2. Diatoms can exist in both fresh and salt water. There are many kinds of diatoms, which can be generally divided into "central order" diatoms and "plume order" diatoms. In each order, there are many "genera", which are quite complex.

The main component of natural diatomite is SiO2. The color of high-quality diatomite is white, and the content of SiO2 often exceeds 70%. Monomer diatoms are colorless and transparent. The color of diatomite depends on clay minerals and organic matter. The composition of diatoms from different mineral sources is different. Diatomite is a fossil diatomite deposit formed after the death of a single celled plant called diatom and a accumulation period of about 10000 to 20000 years. Diatom is one of the earliest protozoa on earth, living in seawater or lake water. It is this diatom that provides oxygen to the earth through photosynthesis and promotes the birth of humans, animals and plants.

This diatomite is formed by the deposition of the remains of unicellular aquatic plant diatom. The unique property of this diatom is that it can absorb free silicon in water to form its bones. When its life is over, it will deposit and form diatomite deposit under certain geological conditions. It has some unique properties, such as porosity, low concentration, large specific surface area, relative incompressibility and chemical stability. After changing its particle size distribution and surface properties through processing processes such as crushing, sorting, calcination, air flow classification and impurity removal, it can be applied to a variety of industrial requirements such as coatings and paint additives.

application area

Coating, paint and other industries

advantage

Diatomite coating additive products have the characteristics of large porosity, strong absorption, stable chemical properties, wear resistance and heat resistance. They can provide excellent surface properties, compatibilization, thickening and adhesion for coatings. Because of its large pore volume, it can shorten the drying time of the film. It can also reduce the amount of resin and reduce the cost. The product is considered to be a high-efficiency matting powder product for coatings with good cost performance. At present, it has been used as the designated product by many large coating manufacturers in the world. It is widely used in a variety of coating systems such as latex paint, interior and exterior wall paint, alkyd resin paint and polyester paint, especially in the production of architectural coatings. In the application of coatings and paints, it can evenly control the surface gloss of the film, increase the wear resistance and scratch resistance of the film, dehumidify and deodorize, purify the air, and has the characteristics of good sound insulation, waterproof, heat insulation and permeability.

No toxic chemicals

In recent years, many new indoor and outdoor coatings and decoration materials with diatomite as raw materials are more and more favored by consumers at home and abroad. It is a potential natural material for developing diatomite indoor and outdoor coatings in China. It does not contain harmful chemicals. In addition to the characteristics of non combustion, sound insulation, waterproof, light weight and heat insulation, it also has the functions of dehumidification, deodorization and purifying indoor air. It is an excellent environmental friendly indoor and outdoor decoration material.

It can adjust indoor humidity

The research results of Beijian University of technology in Japan show that the indoor and outdoor coatings and decoration materials produced with diatomite not only do not emit chemicals harmful to human body, but also improve the living environment.

First, the indoor humidity can be adjusted automatically. The main component of diatomite is silicic acid. The indoor and outdoor coatings and wall materials produced by diatomite have the characteristics of super fiber and porous. Its ultra-fine pores are 5000 to 6000 times more than charcoal. When the indoor humidity rises, the micro pores on the diatomite wall can automatically absorb the water in the air and store it. If the moisture in the indoor air decreases and the humidity decreases, the diatomite wall material can release the moisture stored in the ultra-fine pores.

Secondly, diatomite wall material also has the function of eliminating peculiar smell and keeping the room clean. The research and experimental results show that diatomite can act as deodorant. If titanium oxide is added to diatomite to make composite materials, it can eliminate peculiar smell, absorb and decompose harmful chemicals for a long time, and keep the indoor wall clean for a long time. Even if there are smokers at home, the wall will not turn yellow.

Diatomite indoor and outdoor coatings and decoration materials can also absorb and decompose substances that cause human allergy and have medical functions. The absorption and release of water by diatomite wall material can produce waterfall effect and decompose water molecules into positive and negative ions. Positive and negative ions float around in the air and have the ability of sterilization.