Polyacrylamide (PAM), as a water-soluble high-molecular polymer, has seen its applications in the textile printing and dyeing industry expand from traditional wastewater treatment to sizing, printing, dyeing, and finishing processes, thanks to its excellent flocculation, thickening, and adhesion properties. Henan Xinhuan Water Treatment Materials Co., Ltd., a professional supplier of wastewater treatment chemicals specializing in polyacrylamide,
polyaluminum chloride, and
polyferric sulfate, is committed to providing efficient and environmentally friendly chemical solutions for the dyeing industry. 1. As a Leveling Agent to Improve Dyeing Uniformity During immersion and pad dyeing processes, dye migration on fabrics is often uneven, particularly during the heating stage when dyes tend to “migrate,” causing side-to-center color differences, head-to-tail shade variations, or localized color spots. Polyacrylamide forms a weak cross-linking structure in the dye bath through its long molecular chains, slowing down the dye uptake rate while increasing bath viscosity, thereby inhibiting excessive dye migration. In a practical case, a facility struggling with left-right shade variation when dyeing pure cotton with reactive dyes added 0.1% non-ionic PAM (molecular weight ~4 million) to the dye bath. The bath viscosity increased from 1.2 mPa·s to 2.5 mPa·s, and the color difference rating improved from Level 3 to Level 4.5, eliminating the need for re-shading. Furthermore, polyacrylamide improves dye distribution on fibers, resulting in more uniform dyeing with reduced shade variation, while forming weak bonds with dye molecules to enhance color fastness and extend fabric service life. 2. As a Bleaching Stabilizer, Replacing Traditional Sodium Silicate Traditional oxygen bleaching stabilizers predominantly use sodium silicate, which, despite its effectiveness, tends to form difficult-to-remove silicate scale on equipment and fabric surfaces, leading to silicate spots or stiff hand-feel. Polyacrylamide, as a non-silicon bleaching stabilizer, relies on its complexation and dispersion effects on metal ions to inhibit the ineffective decomposition of hydrogen peroxide. Particularly, low-molecular-weight anionic PAM (molecular weight 500,000–1,000,000) used in combination with magnesium salts delivers stable fabric whiteness after bleaching while completely eliminating silicate scaling issues. PAM as a bleaching stabilizer also effectively prevents the formation of oxidation spots on fabric surfaces, reducing product defect rates. 3. Anti-abrasion Protection in Rope Dyeing In rope dyeing machines (such as jet dyeing and airflow dyeing machines), repeated friction between fabric and the dyeing machine’s inner wall and lifting rollers can easily cause abrasions and creases. Polyacrylamide forms an extremely thin hydrated lubricating film on fiber surfaces—distinct from oil-based agents, this film does not affect dye uptake but significantly reduces the dynamic friction coefficient. In rope dyeing processes, PAM forms a water film in the bath that acts as a fluid lubricant, reducing close contact between fabrics or between fabric and metal surfaces, effectively preventing surface abrasion.
The main products of flocculant manufacturer Xinhuan Water Treatment are: White polyaluminium chloride (food grade), drinking grade polyaluminium chloride, industrial grade polyaluminium chloride, anionic polyacrylamide, cationic polyacrylamide, nonionic polyacrylamide, petroleum recycling polyacrylamide, oil recovery polyacrylamide, polyacrylamide, polymer flocculant polymer flocculation coagulant, polymeric ferrous sulphate, polymerized iron and aluminium chloride, and other water treatment chemicals. Welcome customers to write to us to negotiate business!
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