Overview
Water-based acrylic sizing agent is a synthetic polymer emulsion formulated to improve yarn strength and weaving efficiency in textile manufacturing. As an eco-friendly alternative to starch or PVA-based sizes, it reduces environmental impact while offering superior performance. The product is characterized by its milky white appearance, water solubility, and stable colloidal properties. Developed to meet modern textile industry demands, it addresses challenges like high-speed loom compatibility and fabric softness retention. Its adoption has grown significantly due to regulatory pressures on VOC emissions and waste discharge in sizing processes.
Physical and Chemical Properties
The emulsion typically has a solids content of 25-40% with a pH range of 7-9, ensuring stability during storage and application. Its low viscosity (often 50-500 cP at 25°C) facilitates penetration into yarn fibers. The acrylic polymer backbone provides excellent film-forming capability upon drying at 100-150°C. Key advantages include resistance to microbial degradation (unlike starch sizes) and minimal yellowing tendency compared to solvent-based alternatives. The dried film demonstrates a tensile strength of 10-30 MPa and elongation at break of 300-800%, accommodating yarn flexibility during weaving.
Main Applications
Primarily used in warp sizing for cotton (especially high-count yarns), polyester/cotton blends, and synthetic fibers. It reduces hairiness and improves loom efficiency by 15-25% compared to traditional sizes. The agent is applied via immersion or kiss-roll systems at 5-15% concentration depending on yarn type. Secondary applications include fabric finishing for stiffness control and as a binder for non-woven production. Some formulations are optimized for specific end-uses like denim weaving or technical textiles requiring enhanced abrasion resistance.
Safety and Storage
Classified as non-hazardous under GHS standards, though prolonged skin contact should be avoided. Containers should be kept tightly sealed to prevent drying or contamination. Storage tanks require mild agitation if held for extended periods to maintain homogeneity. Freezing must be prevented as it causes irreversible emulsion breakdown. Shelf life is typically 6-12 months when stored properly. Spills can be cleaned with water before the product dries; hardened residue requires mechanical removal.
B2B Procurement Guide
Industrial buyers should evaluate suppliers based on batch consistency, technical support capability, and compliance with OEKO-TEX or REACH standards. Key specifications to verify include: solids content (±1% tolerance), viscosity stability, and free monomer content (<0.1%). Bulk purchases (IBC totes or tankers) typically offer 10-15% cost savings versus drum quantities. Consider regional suppliers to minimize logistics costs unless specialty formulations are required. Pilot testing with production looms is recommended before full-scale adoption.
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