What is the structure of organic bentonite? Please tell me something about it
Organic bentonite is a kind of important fine chemical raw materials. Because of its characteristics of hydrophobic, form a thixotropic gel in organic solvent, which has anti settling, thickening, anti sagging thixotropic properties. Therefore, the products are widely used in paint, printing ink, high temperature grease, sealing glue, oil drilling precision casting and quick drying putty, adhesives, plastics, asphalt, petroleum additives, chemical industry, anti settling agent, thickening agent, tackifier and suspending agent.
The aspect of organic cation in water molecules and small polar dispersants to help, there is a small part of the solvent, and the negative charge level in a certain amount of organic bentonite. The solvent (organic montmorillonite) unit cell level and end due to different electrical property, thus forming a face and level a unit cell (due to the bond breaking back face and the face will conclude), organic bentonite gel finally formed with a certain viscosity pseudoplastic - that is what we say. The gel properties of organic bentonite addition and production structure by the use of bentonite, surface active agent the outside, when in use, the main and solvent system.
The gel properties of organic bentonite mainly refers to organic bentonite dispersion in organic solvent, gel strength, thixotropy and thermal stability. Similar to aqueous gel, when the organic bentonite is a large amount of organic solvent wet, low molecular weight polar dispersant into the interlayer, along with organic cation space the silicon oxygen tetrahedron level embedded between layers, while the organic cation of long chain elevation and spacing to increase, the formation of internal expansion, the unit cell volume increase. In the solvation of solvent, layered aggregates separated into smaller sections, this is the dispersion process. Organic bentonite dispersion (Meng Tuoshi) sheet shaped end a certain amount of positive charge;