Kaolin ten uses, remember collection!

Release time:

2024-01-29 09:36


kaolin ten uses, remember collection!



Kaolin, the international scientific name-KAOLIN, is usually in the shape of tiny flakes, tubes, laminates, etc., and is composed of kaolinite minerals (kaolinite, kakite, halloysite, etc.), and its main mineral components are kaolinite and halloysite. Kaolin has a wide range of uses, mainly because of its plasticity, cohesiveness, certain drying strength, sintering and whiteness after firing and other special properties, making it the main raw material for ceramic production. Generally speaking, high white mud refers to the clay with high kaolin content. The porcelain burned out is much whiter than the kaolin content. In addition, it has many other uses.



Use 1: Kaolin is also called Guanyin soil. People often use it to satisfy their hunger during the Great Wilderness. Legend has it that Guanyin Bodhisattva guided its use and got its name.




Use 2: fine kaolin due to fine particle size, low moisture, PH and DPG absorption stability, sedimentation volume is higher than the Ministry of chemical industry, so the production of all kinds of rubber products with low wear, strength, good performance, become the production of all kinds of rubber products semi-strong auxiliary filler.


Use three: kaolin functional additives are also widely used in wire and cable processing, especially for EPDM cable. Ordinary wires and low-voltage cables (1-2KV) sheathing materials are mostly PVC and PE resins, except for flame retardant requirements, fillers are generally not required, and calcium carbonate is sometimes added to reduce costs and improve dielectric properties. High-voltage cable (15 -- 33KV) sheath mainly uses EPDM and XLPE materials. XLPE generally does not require a filler. EPDM cable, which accounts for 90% of the industrial market, requires high physical and mechanical properties of the cable and requires high-performance fillers to meet the requirements of use.



Use four: calcined kaolin has a blocking effect on the infrared of 7-25μm wavelength. When modified calcined kaolin is added, the night temperature in the agricultural film can be increased by 2-3 ℃. The temperature difference between day and night is reduced, which is conducive to the growth of crops. At the same time, the addition of modified calcined kaolin can reduce the direct rays in the agricultural film shed, while the scattered rays increase, and the crops are evenly illuminated, which is conducive to the photosynthesis of crops. The greenhouse effect of agricultural film in our country is relatively poor, the main reason is that the blocking rate of infrared is low and the shielding effect is small. Because the barrier ability of kaolin is close to mica and the price is moderate, it is very promising to make insulation agent in agricultural greenhouse film, which can not only improve the insulation of greenhouse film, but also reduce the raw material cost of the film.




Use five: calcined kaolin is a special processing of aluminum silicate pigment and multi-functional additives, high whiteness, low impurity content, strong chemical inertness, easy to disperse in water and oil system, can be used in water-based coatings, paint, putty and sealant and so on. In architectural coatings, especially latex paint, our calcined aluminum silicate products as a functional additive provide good covering performance, partially replacing titanium white, which can reduce the cost of the coating, and can adjust the gloss of the coating, improve the mechanical properties of the paint film. It can also improve the storage stability of the coating system, improve the brushing properties of the coating, improve the mechanical properties such as moisture absorption resistance and impact resistance of the coating, and improve the anti-floating color and flower resistance of the pigment.



Use six: printing ink industry special kaolin, with high quality raw materials and advanced technology and equipment production, product purity is high, physical and chemical performance is stable, can replace part of the titanium dioxide, reduce ink production costs, but also can improve the ink hiding power, tinting strength, improve ink adsorption, rheology, light weight, anti precipitation, so as to improve the quality of ink.


Use seven: glue industry with kaolin, selection of high quality raw materials and advanced technology and equipment refined, product physical and chemical properties of stability, high viscosity, whiteness is good, excellent suspension and fluidity, not mildew, is the ideal cheap glue filler, domestic manufacturers have used kaolin powder instead of the expensive mildew starch.


Use eight: in petroleum processing, kaolin can be used as catalyst.


Use 9: Kaolin is also widely used in the paper industry. There are two main areas, one is the filler used in the papermaking (or papermaking) process, and the other is the pigment used in the surface coating process. For general culture paper, the amount of filler accounts for 10-20% of the weight of the paper. For coated paper and paperboard (mainly including lightweight coated paper, coated paper and coated paperboard), in addition to fillers, pigments are also required. The proportion of kaolin used for filling and pigments is 20-35% of the paper weight. Kaolin used in papermaking, can give paper good coverage and good coating gloss performance, but also increase the whiteness of the paper, opacity, smoothness and printability, greatly improve the quality of paper.



Use ten: kaolin has high whiteness and brightness, soft, strong water absorption and easy to decompose suspended in water, good plasticity and high adhesion, excellent electrical insulation, good acid solubility, strong ion adsorption and ion exchange, as well as good sintering and high refractoriness and other properties. For example, the 95-year industrial porcelain added with alumina is commonly used in high-temperature porcelain parts of atomic reactors, space shuttles and spacecraft. The ceramic products produced by adding zirconia are hard as steel sheets, like the common ceramic knives on the market now. Especially in recent years, the rapid development of modern science and technology, making the application of kaolin more widely, some high-tech fields began to use kaolin as a new material, and even made of kaolin.

Use, kaolin, improvement, performance, coating, good, filling, calcination, pigment

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