Hydroxy-aluminum montmorillonite suspension as well as preparation method and application thereof
A hydroxyaluminum montmorillonite, suspension technology, applied in liquid transportation, emulsion transportation, aluminum/calcium/magnesium active ingredients, etc. Stabilizer use effect and other issues to achieve the effect of promoting healing and relieving stomach pain
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[0038] A preparation method of hydroxyaluminum montmorillonite suspension, comprising the steps of:
[0039] (1) Pulverize the hydroxyaluminum montmorillonite, pass through a 90-110 mesh sieve, and then use laser particle size measurement to obtain an average particle size of 8-27 μm;
[0040] (2) adding purified water to step (1) to prepare a suspension solution with a mass ratio of hydroxyaluminum montmorillonite: purified water = 1: 5-10, for subsequent use;
[0041] (3) Use 0.1-0.3 mol / L sodium hydroxide solution to adjust the pH of the suspension solution in step (2) to 8.5-9.5 under stirring; continue stirring for 0.5-1 h, age for 24 h, and set aside;
[0042] (4) Ultrasonic treatment of step (3), the ultrasonic frequency is 30-45KHz, continue to stir for 0.5-1.5h, after standing for 2-3h, separate the upper layer of water after layering, then centrifuge, discard the filtrate, Repeatedly washing with water several times until the pH of the lotion reaches neutrality, and...
experiment example 1
[0059] Experimental example 1: Determination experiment of average particle size and particle size distribution of hydroxyaluminum montmorillonite
[0060] Hydroxy aluminum montmorillonite is prepared by modifying montmorillonite, and montmorillonite is a kind of mineral medicine, which is a kind of hydrous layered silicate mineral. No matter how much the active ingredient of the suspension occupies in the prescription, it will leave an uncomfortable gritty feeling in the mouth, so the hydroxyaluminum montmorillonite is selected and crushed.
[0061] The particle size distribution of hydroxyaluminum montmorillonite was determined using sieve analysis. 50g of hydroxyaluminum montmorillonite particles are tested for each batch. Use a sieve meter and a standard test sieve to measure, the amplitude is 1.5mm, and the vibration time is 20min. The specifications of the sieve are 60 mesh, 70 mesh, 80 mesh, 90 mesh, 100 mesh and 110 mesh. Use the laser diffraction particle size anal...
experiment example 2
[0070] Experimental example 2: Research experiment on the pretreatment of hydroxyaluminum montmorillonite with sodium hydroxide
[0071] The activation treatment re-associates the hydroxyaluminum montmorillonite particles, and the activator metal ion Na + The ions enter the crystal layer of the hydroxyaluminum montmorillonite, exchange reaction with the ions adsorbed on the edge of the hydroxyaluminum montmorillonite, and produce non-ionized substances, which fall off from the edge of the hydroxyaluminum montmorillonite, increase the charge of the colloidal particles, and eliminate or reduce the hydroxyl group. The negative charge of the aluminum montmorillonite edge, the thickness of the diffusion layer is large, and the expansion multiple is high. The cation can act as a similar chemical bond to link the hydroxyaluminum montmorillonite particles together, so that the hydroxyaluminum montmorillonite particles form a gel structure dominated by edge-to-edge association and resu...
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