HT Fine Chemical Co., Ltd.
Four Applications of Surfactants in Acrylic Textile Processing

Four Applications of Surfactants in Acrylic Textile Processing

Time:   Click: 1483

Adding a small amount of surface active agent in textile printing and dyeing applications can change the interface state of the solution system obviously. There is fixed hydrophilic oil-philic group in the surface active agent that can be oriented on the surface of the solution. The molecular structure of surfactants is amphiphilic: there is hydrophilic group on one end and hydrophobic group on another end. The application of surfactant in acrylic fiber textile processing mainly includes the following aspects:

Ⅰ. Application of pretreatment auxiliaries

The pretreatment auxiliaries used in the scouring of acrylic pure textiles are generally non-ionic detergent (such as detergent W) and anionic detergent (such as detergent LS, detergent ES, etc.). If the pulp on the fabric is water-soluble chemical pulp such as polyvinyl alcohol, polyacrylic acid, carboxymethyl fiber, etc., it has been removed during the scouring process. The starch slurry is desizing with amylase. Cationic additives can be used for scouring colored fabrics. If scouring with cationic additives, the degreasing effect is not as good as non-ionic or anionic additives, but the fabric has better hand feeling and luster, which is suitable for cleaner pure acrylic fabrics. Because acrylic fiber does not contain natural impurities, it has good whiteness. If you want to further improve the whiteness and remove the impurities on the fabric, you can do bleaching and fluorescent whitening. It is better to use sodium chlorite as a bleaching agent during bleaching because it has a desizing effect.

Ⅱ. Application of dyeing auxiliaries

Acrylic fiber is easier to dye unevenly than cotton, wool and other chemical fibers, especially with cationic dyes. Special textile dyes and chemicals mainly include cationic and anionic auxiliaries. Sometimes some inorganic salts and organic compounds can also be used as dyeing auxiliary.

Ⅲ. Application of printing auxiliaries

Printing auxiliaries are used for whitening printing of acrylic fabric dyed with dispersive dyes. In order to get better effect of whitening, it is necessary to add the whitening agent. Adding dispersive whitening agent DCB to the white drawing paste whitening agent can increase the whiteness of the white drawing printing. When printing with cationic dyes, Tartaric acid or citric acid is added to the printing pulp to prevent acetic acid volatilizing, rising the pH value, causing some cationic dye damage discoloration after printing and drying. Because both are non-volatile organic acids with high solubility point and high boiling point, the pH value of acrylic fabric can be kept in the acidic range after printing and steaming.

Ⅳ. Application of finishing agent

The finishing agent for pure acrylic fabric to anti-pilling is acrylate copolymer emulsion and silicone. After drying the processed fabric, acrylate copolymers bind the fibers in the form of punctate particles. Under the action of external force, the possibility of the fiber sliding out of the fabric surface is reduced, so it can improve the pilling. Organosilicon reagent forming a fine elastic membrane on the surface of acrylate copolymer particles and fibers, also improves the resistance to pilling.

Related News
  • What is the Effect of Color Fixing Agent on Fabric?

    What is the Effect of Color Fixing Agent on Fabric?

    February 17, 2023As one of the indispensable auxiliaries in the textile printing and dyeing industry, color fixing agent can improve the wet resistance of dyes in the textile, and ensure the dye is firmly attached to ...view
  • Technical Application of Towel Silicone Oil

    Technical Application of Towel Silicone Oil

    May 14, 2020The cotton woven towel usually will be with rough & stiff hand feeling ,and poor performance in various property. So various types of softeners are needed to modify the surface of the towel fabric...view
  • The Working Principle of Easy Care and Wrinkle-Proofing Finishing Agent

    The Working Principle of Easy Care and Wrinkle-Proofing Finishing Agent

    May 15, 2017I. The mean of easy care finishingCompared with chemical fiber, natural fiber has excellent moisture absorption, air permeability and anti-static properties. It is ideal material for clothing, but it ...view
  • What is a Leveling Agent?

    What is a Leveling Agent?

    April 27, 2021Dyeing refers to the process of coloring fibers from dye liquor. In order to dye evenly and reduce dyeing defects such as color spots and color stains, in addition to the reasonable formulation of the...view
  • The 8 Methods to Improve the Fastness to Wet Rubbing

    The 8 Methods to Improve the Fastness to Wet Rubbing

    May 11, 2017I. The choose of dyeThere are a great variety of reactive dye with different quality level. So the choose of qualified dye becomes important.1. The choose of bi-functional reactive dyes and multi-func...view
Pretreatment Auxiliaries
Dyeing Auxiliaries
Hand Feels Finishing Agent