Preparation of Silicone-Modified Acrylate Latex and its Application for Low-Emission Printing of PET Fibre

• Published in: AUTEX Research Journal 2019-09, Vol.19 (3), p.293-300
• Main Authors: Ai, Li, Cao, Hongmei, Zhu, Yawei
• Format: Article
• Language: English
• Subjects: Acrylics; colour fastness; direct printing; Dyes; low emission; Materials science; Polyesters; Printing; silicone-modified acrylate; Silicones; Textiles
• ISSN: 2300-0929; 1470-9589; 2300-0929
• DOI: 10.1515/aut-2018-0061

Attempts were made to find a more environmentally friendly technique for the printing of polyester (PET ) fabric, acting as an alternative to a usual disperse dye direct-printing process by using a plenty of water and salt and producing effluent contaminants. The low-emission printing technique includes the recipe containing disperse dye paste, synthetic thickener and the water-based silicone-modified acrylate and high-temperature curing process. The water-based silicone-modified acrylate for adhesive coating of polyester (PET) fibres was synthesized using butyl acrylate (BA), eight four methyl siloxane (D4), acrylonitrile (AN), styrene (St), methyl acrylic acid (MAA) and N-methylol acrylamide (NMA).The results showed that the silicone-modified acrylate adhesive could increase the percentages of dye fixation and the colour strength. The superior colour fastness (≥level 4) with the low-emission printing process was realized. The wastewater stream produced by the technique had a residual dye concentration of 2.62 mg/L, which was reduced by approximately 19 times that produced by traditional direct printing. The effluent wastewater drainage was reduced by 76.9%.