With the increasing complexity of working conditions in the field of flue gas treatment, the functional requirements of non-woven textiles are getting higher and higher. The simplest way to give nonwovens multifunctionality is the post-treatment process. That is to carry out different types of functional finishing for various non-woven fabrics. On the basis of maintaining the original function of the fiber, the non-woven fabric can be given additional properties, such as waterproof and oil-proof, flame-retardant, and abrasion resistance, so as to be effective Broaden the application fields of non-woven fabrics.

Launched by 3M in the United States, and subsequent companies such as DuPont, Daikin, and Asahi Glass have also developed similar products. Because the fluorine-containing finishing agent can impart water-repellent, oil-repellent and anti-fouling functions to the surface of the substrate without changing the original touch, air permeability, and warmth retention, it has been quickly promoted and widely used and has become the market’s Mainstream.

Fluorine-based water repellent is an auxiliary agent that can impart water and oil repellency to non-woven needled felt. The application mechanism of fluorine-based waterproofing agents is to reduce the surface energy of solids by relying on the dense and regular arrangement of perfluorinated groups on the surface. Because fluorine atoms have smaller atomic radius, stronger electronegativity, higher CF bond energy and smaller intermolecular cohesion, etc., in the high-temperature setting process of finishing processing, fluorine-containing polymers are used in non-woven fabrics. A hydrophobic film is formed on the surface of the cloth. It appears that various liquids are difficult to wet or adhere to the surface.

The filter material after fluorine-based water repellent treatment has the following characteristics:

1)Oil repellency: Give the filter material certain oil repellency properties, which can prevent oily dust from sticking to the bag and cause paste bags;

2) Water resistance: Give the filter material a certain degree of water resistance Attributes, can effectively avoid the paste bag caused by excessive moisture in the flue gas;

3) Anti-adhesion: prevent the dust attached to the surface of the filter cloth from penetrating into the inner layer of the filter cloth, thereby improving the filtering performance;

4) Dust removal ability: The fluorine-based water repellent treatment can form a hydrophobic layer on the surface of the filter material, so that the dust can be removed without strong dust removal measures

Yuanchen Technology specially develops high-grade water and oil repellent treatment technology for specific working conditions such as high moisture content by using fluorine-based water repellents and various auxiliary ingredients to give the surface of the filter bag water-repellent properties and prevent the bag from sticking in the application. It does not cause pore clogging, is easy to clean dust, and has chemical properties such as acid and alkali resistance. Compared with ordinary filter bags, it not only has the characteristics of water and oil repellent, but also has the characteristics of anti-adhesion and easy peeling for dust, and the service life of the cloth bag is prolonged.