The principle of surfactants is based on its molecular structure and characteristics. They are composed of hydrophilic (hydrophilic) part and hydrophobic (hydrophobic) part, which is called two parent. This two parent structure makes the surfactant has a special properties and functions on the liquid interface.
The principle of surfactants mainly includes the following aspects:
Reduce surface tension: The hydrophilic part of the surfactant interacts with water molecules, while the hydrophobic part interacts with air or oil. The presence of these two parent can reduce the surface tension between liquid, making liquid easier to expand and spread.
Emulsification and decentralization: The surfactant has emulsification and decentralization ability. It can disperse hydrophobic substances such as fat and stains in water to form stable lotion or suspension. Its hydrophobic part is wrapped in oil particles, so that it is suspended in the water, so as to achieve the effect of decontamination and cleaning.
Wetness and penetration: Surface active agents can improve the moisture of liquid to the solid surface, so that liquid can better infiltrate and infiltrate the solid surface. The improvement of this humidity helps the cleaner to better contact and remove dirt, and it is also conducive to the infiltration of dyes in textiles.
Foam and stability: Surface active agents can form a stable foam structure. Their two parent elements are arranged in the water to form a film, wrapped in gas to form foam. The hydrophobic part is inward, and the hydrophilic part is facing outward, so that the bubbles keep the bubbles stable and prevent water molecules from being relieved from the foam.
The application of surfactants is very wide, including but not limited to the following areas:
Moisturizers and detergents: used for cleaning, decontamination and emulsification, such as laundry fluids, dishwashing fluids, hand -sanitizers, etc.
Personal care products: used for shampoos, soap, bath gels, etc., playing the role of cleaning and moisturizing.
Cosmetics and skin care products: It is used to adjust the quality of the production and improve the absorption performance and stability.
Agriculture and pesticides: used as pesticide efficiency agents, plant protective agents and leaf fertilizers to improve the absorption of crops.
Paper and textile treatment: used for coating, bleaching and anti -static treatment, dyeing, sorting and wrinkle treatment.
Medicine preparations: used as a dispersion, emulsifier, and adsorption agent for drugs to improve the dissolution and stability of the drug.
Industrial application: used in metal processing solution, oil field chemicals, petroleum treatment agents, antifreeze and other fields.
You need to choose the appropriate surface active agent according to the specific application requirements, and follow relevant regulations and security operation specifications.