Application of magnesium aluminum silicate in agriculture

Magnesium aluminum silicate is the main component of natural nano-scale clay mineral bentonite. After classification and purification of bentonite raw ore, magnesium aluminum silicate of different purity can be obtained. Magnesium aluminum silicate is an inorganic gel product with excellent suspension, dispersion and thixotropy in water.

NF type IA magnesium aluminum silicate is a high purity magnesium aluminum silicate after purification, stripping and ultrafine grinding treatment, for beige white or beige liquid powder, non-toxic and tasteless, does not react with the original drug, is not affected by environmental temperature, soft texture. It is easy to disperse into glue in aqueous solution, with high colloidal strength and strong suspension ability, and is an excellent anti-settling agent and stabilizer for water-suspended pesticides.

NF type IA magnesium aluminum silicate uses can be used as a thickener alone or combined with xanthan gum in pesticide formulations, saving raw material costs.

1. 1."Pesticide grade" magnesium aluminum silicate product features

(1) Excellent stability;

(2) Excellent suspension performance and excellent thixotropic performance;

(3) Excellent rheological regulator, thickening agent, suspension and emulsion stabilizer;

(4) binder and disintegrator of solid particles;

(5) thixotropic regulator of suspension system

2. 2.Application in pesticide preparations

Introduction of a new water-based thickening, thixotropic, dispersing and suspending agent ----- magnesium and aluminum silicate

(1) Product characteristics of magnesium and aluminum silicate:

Magnesium and aluminum silicate is an inorganic gel prepared by highly modified natural saponite and montmorillonite. The crystal structure is trioctahedral and dioctahedral. Generally white or light white, fine texture, hardness is small and slightly slippery. Non-toxic, odorless, with nano characteristics. Magnesium and aluminum silicate can expand quickly when added to water, forming a large amount of gel with water network structure. It has unique colloidal properties, thixotropy, adsorption, suspension, thickening, often used as thickening, viscosifying, thixotropic, dispersion, suspension agent.

(2) Product characteristics of magnesium and aluminum silicate

1. Stability: Magnesium aluminum silicate gel is A non-metallic composite nanomaterial, inorganic mineral, not cut by bacteria and heating machinery

Cut damage decomposition, will not be eroded by microorganisms, long-term storage does not deteriorate, no mildew, viscosity does not change with temperature, can be hydrated with deionized water at room temperature, expanded into suspended colloids. When the concentration is 0.5-2.5%, the formation of transparent or translucent thixotropic gel, eliminating the heating process, energy saving, convenient.

1. thixotropy: Magnesium aluminum silicate gel has a unique high thixotropy, significantly better than other organic and inorganic adhesives.
2. Suspension: In the appropriate concentration of magnesium and aluminum silicate gel water-based system can be bonded, suspended powder materials, stable suspension

Liquid: prevent suspended substances from precipitation, accumulation, hardening, so that the pesticide preparation suspension uniform texture, easy to use, easier to spray, and not affected by external force time. Its suspension performance exceeds that of other organic and inorganic suspension agents.

1. Thickening: When magnesium aluminum silicate gel and organic colloids are used together, the synergistic effect can be achieved to obtain the best performance. Silicic acid

Magnesium aluminum gel helps to coordinate the viscosity and yield value, and the viscosity and stability are better and more economical than that obtained by using organic glue alone, and the viscosity is doubled.

1. Compatibility: Magnesium aluminum silicate gel can be used with anionic and non-ionic amphoteric surfactants, in slightly acidic to medium

Stable for use in alkaline media. In the electrolyte system containing a small amount of salt, it remains stable.

Suggestions on the experience of suspending agent in suspension processing

It is generally recommended that magnesium aluminum silicate and xanthan gum be prepared into a pre-gel form, and the following advantages are added to the deployment later:
A. Prevent xanthan glue from condensing into small clumps and not dissolving well, forming A stable homogeneous Xanthan glue solution.
B. When the high-viscosity viscous micelles pass through a part of the filter of the domestic sander, they are easy to block due to the structure of the filter and increase the resistance and sanding efficiency.
C.Too much xanthan gum is added to the sanding mill, and the huge sanding linear speed and friction cause the fracture of part of the xanthan chain structure, thereby reducing the thickening effect.
D. If the user does not have a high-speed shear machine, it can only be added to the sand mill or prepared in advance for a long time to stir into a pre-prepared water solution.
E. Add water solution in the form of general preparation product viscosity can be simple control, product viscosity repeatability is good.
F. When sanding, it is also necessary for the slurry to maintain the appropriate viscosity for sanding, which can improve the efficiency of sanding.
G. As for some suspension agents that are easy to produce bubbles after high-speed shear after adding xanthan gum, it is recommended to achieve the purpose of dispersion and dissolution by stirring in the later stage, the bubbles will be much less, of course, the appropriate amount of defoamer is also indispensable. The simple one is directly added to the sand grinding, which does not have much impact on the stability of the suspension agent. A little more complex, it is first matched into the mother liquor, after the original drug additives are sanded, into the storage tank, and then add xanthan gum mother liquor, stir evenly can be packaged.