Take you to a class of bentonite

- Oct 30, 2017 -

Organic bentonite is an inorganic mineral / organic ammonium complex, using bentonite as raw material, the use of bentonite montmorillonite lamellar structure and its ability to swell in water or organic solvents dispersed into colloidal clay particles, through the ion exchange Technology to insert organic covering agent made of. Organic bentonite can form gel in various organic solvents, oils and liquid resins. It has good thickening, thixotropy, suspension stability, high temperature stability, lubricity, film forming, water resistance and chemical stability , In the paint industry has important application value. In the paint ink, aviation, metallurgy, chemical fiber, oil and other industries are also widely used.


Bentonite is also called apricot or rock. China has developed a long history of the use of bentonite, the original just as a detergent. (Sichuan Renshou area hundreds of years ago there are open pit mine, the local people called bentonite soil powder). Really widely used but only a hundred years of history. The earliest discovery in the United States in Wyoming ancient stratum, was yellow-green clay, water can be expanded into a paste, then people put all the nature of the clay, collectively referred to as bentonite. In fact, the main mineral composition of bentonite is montmorillonite, the content of 85-90%, bentonite some of the properties are also determined by the montmorillonite. Montmorillonite can be a variety of colors such as yellow-green, yellow and white, gray, white and so on. Can be into a dense block, but also for the loose soil-like, with your fingers rubbing when there is a sense of skin, small pieces of water after the volume expansion to several times to 20-30 times in the water was suspended, The The nature of montmorillonite is related to its chemical composition and internal structure.


The nature of montmorillonite and the type of interchangeable cations are of great interest. According to the main types of interchangeable cations, montmorillonite is usually divided into calcium montmorillonite and sodium montmorillonite.


Montmorillonite adsorption and cation exchange performance, can be used to remove the oil of toxins, gasoline and kerosene purification, wastewater treatment; due to good water swelling performance and dispersion and suspension and slurry, so for drilling mud, Flame retardant (suspension fire); can also be done in the paper industry filler, can optimize the performance of coatings such as adhesion, hiding power, water resistance, washability, etc .; due to a good cohesive force, can replace the starch used Textile industry in the yarn sizing both grain, and not fluff, the paddle does not issue a smell, really a must.


In general, the properties of sodium montmorillonite (or sodium bentonite) are better than calcium. However, the distribution of calcareous soil in the world is far more extensive than that of sodium soil. Therefore, in addition to strengthening the search for sodium germanium, it is necessary to modify the calcareous soil, making it a sodium soil.


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