The wide application of surfactants in leather making has accelerated industrial progress

2021-11-05 17:11:09

The application principle of surfactant in water-based metal cleaning agent is to weaken or offset the adhesion of oil on the metal surface through the wetting, penetration, emulsification, dispersion and solubilization of surfactant, and accelerate the oil to separate from the metal surface and enter the washing solution by mechanical and physical methods to be emulsified, dispersed and suspended or solubilized micelles.

Water based metal cleaning also requires adding inorganic auxiliaries: corrosion inhibitor, cosolvent, foam stabilizer, defoamer, filler and so on.

Formula: nonylphenol polyvinyl chloride (20) ether 80% oleic acid 8% triacetic acid amine 8% boric acid triacetamide 8% acetic acid monobutyl ether 8% silicone defoamer 0.2% water balance. When used, dilute to 5%. Note: the above percentage is the mass ratio.

The wide application of surfactants in leather making has accelerated the technical progress and development of leather industry, and played an important role in improving process and product quality. At present, anionic and non-ionic surfactants are mainly used in leather industry, while cationic and amphoteric surfactants are relatively few.

The environmental protection performance of surfactants mainly refers to the toxicity and biodegradability of surfactants and the improvement of the absorption rate of surfactants to other chemical materials.

On this basis, a series of new surfactants have been successfully developed, such as alkyl polyglycosides (APG) and glucosamine (APA) produced by the reaction of glucose with lipids and alcohols or fatty acids; EDTA modified by EDTA has both surface activity and strong complexation ability with calcium and magnesium ions; Cetyl diphenyl ether monosulfonate (c16mads); Gemini surfactant; There are also cleavable and reactive biosurfactants.