What are the differences between organic bentonite and montmorillonite?

Many people don't know what organic bentonite and montmorillonite are? Naturally, the difference between the two is not clear. Both colors are whiteish yellowish, and they are very fine powdery and easy to agglomerate. So what is the difference between the two? Let's explore together!

Organic bentonite is an inorganic mineral/organic ammonium composite. It uses bentonite as raw material and utilizes the lamellar structure of montmorillonite in bentonite and its ability to swell and disperse into colloidal grade clay in water or organic solvent. The technology is made by inserting an organic covering agent. Organic bentonite can form gel in various organic solvents, oils and liquid resins, and has good thickening, thixotropic, suspension stability, high temperature stability, lubricity, film formation, water resistance and chemical stability. It has important application value in the coating industry. It is also widely used in paint, ink, aviation, metallurgy, chemical fiber, petroleum and other industries.

Organic bentonite is a substance that forms a hydrogen bond or a large specific surface area of a certain structure with a polymer. The force is thinned and it is allowed to stand and thicken. After the adhesive is added to the (organic bentonite) thixotropic agent, when it is stirred and coated, it is sheared, and the glue is thinned; when the operation is finished, it is thickened again without causing drooling.

Montmorillonite, also known as rubberite, microcrystalline kaolinite, a natural mineral of silicate, is the main mineral component of bentonite ore. Monoclinic system, multi-site crystallites, aggregates in the form of soil, spherulites, etc. The white microstrip is light gray, light yellow, light green, light blue with impurities, earthy luster or dullness, and slippery. After adding water, its volume can expand several times and become a paste. The volume shrinks after being dehydrated by heat. It has strong adsorption capacity and cation exchange performance, and is mainly produced in the weathering crust of volcanic tuff. Montmorillonite (including calcium-based, sodium-based, sodium-calcium-based, magnesium-based montmorillonite) is stripped, purified, modified, super-segmented, special organic composite, average wafer thickness less than 25nm, can be used as bleaching agent, adsorption Filler is called "universal material".

Organic montmorillonite has good dispersing properties and can be widely used as an additive for nano-polymeric polymer materials in the polymer material industry to improve impact resistance, fatigue resistance, dimensional stability and gas barrier properties, thereby enhancing polymer synthesis. The role of physical properties while improving material processing performance. The application in the polymer can be added at the time of the polymer or can be blended at the time of melting (usually by screw blending).

The difference is that the difference between the physical structure and chemical properties of the two leads to different characteristics. The montmorillonite refers to the pure montmorillonite composed of two layers of Si-O tetrahedron and one layer of Al-O octahedron. The acid crystals contain cations in the layer mainly composed of sodium ions, magnesium ions and calcium ions. The organic bentonite is an impure montmorillonite mixed with a certain amount of other types of ore processed and artificially sodiumized.

2018-08-28 14:43