Surfactant has strong adsorption ability on particle surface

2020-04-03 15:55:23

Surfactant has a strong adsorption capacity on the surface of particles. When pesticide processing is added, it helps to disperse and suspend particles, and ensures that the particles are dispersed when water is diluted in the spray barrel to prevent the aggregation of particles. When ionic surfactant is selected, it adsorbs on the surface of particles, providing electric repulsion force, keeping particles separated from each other, that is, providing particle charge stabilization; when non-ionic surfactant is selected, the lipophilic part of surfactant adsorbs on the particles, and the hydrophilic part extends into the water phase around the particles, forming a space barrier, that is, providing space potential resistance stabilization.

All of these are helpful to prevent the aggregation of pesticide particles during the preparation processing and storage. The dispersants commonly used in pesticides are lignosulfonate, naphthalene sulfonate methyl acetate condensate, polyoxyethylene alkylphenol, EO / PO block copolymer and comb graft copolymer.

By adding high efficient stabilizer to industrial cooling water, the once through cooling water (disposable water) in production can be changed into circulating cooling water, thus saving a lot of fresh water resources. From the point of view of green chemistry, the new corrosion inhibitor is to replace the original chromate and dichromate with platinum salt, and the aromatic amine with fatty amine. Its toxicity and pollution are significantly reduced, such as replacing the original organic chromium phosphate and phosphate with polyaspartic acid, a green product.

Reclaimed water is a kind of non drinking water which can be used in industrial and agricultural production after being treated by green chemical technology. In recent years, with the shortage of fresh water resources, people pay more and more attention to the production of reclaimed water. In Beijing, Shanghai and other places, China has successively built a certain scale of reclaimed water production facilities.

Amphoteric surfactants have both anionic and cationic groups, so they have both the washing effect of anionic surfactants and the softening effect of cationic surfactants on fabrics. It is easy to dissolve in water, hard water, little irritation to skin, strong bactericidal power and foaming power. It is suitable for foaming cleanser. It is used for washing silk wool fabrics and shampoos. Zwitterionic surfactants have good detergency and good conditioning. But because of its high cost, it is often used in personal hygiene products and special detergents.