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Functions And Requirements of Penetrants

Views: 0     Author: Site Editor     Publish Time: 2024-08-05      Origin: Site

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The hygroscopic properties of untreated fibers are poor, mainly due to the presence of air between the fibers and the coating of hydrophobic substances such as grease and cotton wax. In order to promote the penetration of the treatment solution, it is necessary to add surfactants that can reduce the surface tension and the interfacial tension between water and oil. This kind of surfactant can promote the fiber or fabric surface to be quickly wetted by aqueous solution and penetrate into the fiber. Therefore, penetrants and wetting agents are not only mainly used in pre-treatment processes such as desizing, scouring, mercerizing or bleaching, but also widely used in dyeing, printing and post-finishing processes. Because scouring additives generally require better permeability, many scouring additives can also be used as penetrants. Surfactants used as penetrants and wetting agents are mainly anionic and non-ionic surfactants. Jiangsu Hai 'an Petrochemical Plant specializes in the production of penetrant wetting agents.

The characteristics of penetrants and wetting agents are generally required:

(1) Resistant to hard water, acid or alkali.

(2) Strong penetration, can shorten the processing time.

(3) The capillary effect of the treated fabric can be significantly improved.

The application of wetting agent and penetrant should be selected according to the properties of the solution. Taking the acid-base properties of the solution as an example, according to different uses and different process requirements, the pH value will change in a wide range, and some are also combined with oxidants or reducing agents, and the working fluid conditions often have unusual requirements for penetrants or wetting agents.

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