(1) Oil repellent finishing
(2) Easy decontamination and finishing
The purpose of easy decontamination finishing is to make the oily liquid dirt on the hydrophobic fiber easy to remove, and because the liquid dirt is often used as the carrier and cementing agent of the particles, if the liquid dirt is easy to wash off, the particles will also be easily removed. Remove. The removal of dirt from the surface of the non-woven fabric is not only related to the washing conditions and other factors, but also mainly depends on the critical surface tension of the fiber surface, which is related to the surface energy of the non-woven fabric. The fabric must be easy to decontaminate and resist moisture. Performance, it has high wettability in liquid medium, and low interfacial energy to common oily dirt in air medium, so that it can have a good antifouling effect.
The liquid dirt is mainly contaminated on the surface of the fiber through wetting, and then contaminates the interior of the fabric, between the fibers and between the yarns through capillary action. The principle is similar to the wetting and permeation of the fiber surface by water, except that the surface tension of oily liquid dirt is usually lower than that of water. Therefore, the liquid dirt has a strong wetting ability on non-woven fabrics.
