A kind of manufacture method of organic bentonite

Abstract

The invention discloses an organobentonite production method which comprises the following steps: 1) pulping; 2) precipitating the slurry; 3) using a rotational flow desander for sand removal; 4) using a horizontal centrifuge to further filer solid impurities; 5) using a disc centrifuge for liquid-liquid separation to obtain concentrated sodium base montmorillonite seriflux; 6) measuring solid content; 7) adding sodium carbonate; 8) warming, adding sulphuric acid to adjust pH value, and insulating; 9) performing an organized covering reaction: adding white oil and octadecyl trimethyl ammonium chloride; 10) enabling the organobentonite to be separated from water by using a filter press; 11) drying over a fire. The organobentonite, prepared by the invention, has a finer dispersing grain diameter in the organic system and is suitable for both low and moderate polarity solvents and moderate and high polarity systems; when in use, the organobentonite is subjected to self-activation dispersion without addition of an activating agent, is not needed to be produced into pregel, can be added at any stage in the processing process, is not needed to be ground, and can be used in coating, requiring higher glossiness, such as finishing coat, wood lacquer and furniture lacquer.

Description

technical field [0001] The invention relates to the field of production and manufacture of organic bentonite, in particular to a method for producing organic bentonite. Background technique [0002] Organobentonite is an inorganic mineral / organic ammonium compound, using bentonite as raw material, using the lamellar structure of montmorillonite in bentonite and its ability to swell and disperse into colloidal clay particles in water or organic solvents, through ion exchange technology inserts organic coverings. Organobentonite can form gels in various organic solvents, oils, and liquid resins, and has good thickening properties, thixotropy, suspension stability, high temperature stability, lubricity, film-forming properties, water resistance and chemical stability. , has important application value in the paint industry, and is also widely used in paint ink, aviation, metallurgy, chemical fiber, petroleum and other industries. [0003] The production of organic bentonite i...

AI Technical Summary

Problems solved by technology

In the prior art, sodium carbonate and sodium fluoride are used together for sodium modification during the sodium modification of the original soil. The slurry modified by sodium carbonate has a large consistency and high viscosity, which is not conducive to the effective removal of sandy components; the slurry In the separation and purification process, the existing technology uses a single horizontal centrifuge for separation, and the separation and purification effect is average, resulting in the impurity components inside the finished product of organic soil, the dispersion effect of the finished product in actual use is poor, and the colloidal particles are relatively coarse; In the chemical covering reaction process, the existing technology uses a single C12-C18 quaternary ammonium salt cation to carry out the covering reaction. This kind of product is not conducive to the use in medium and high polarity systems, and has a certain matting property, which is not conducive to the use of topcoats and woodware. Used in paints, furniture paints and other paints that have high requirements for gloss

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