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The pigment dyeing textile printing adhesive polyacrylate type of adhesive application performance, but there is a release formaldehyde and other environmental safety issues. This paper aims to use the N-(2 - hydroxyethyl) ethylene diamine chain extender is a small molecule, the synthesis of an environmentally friendly waterborne polyurethane adhesive polyester base, used in pigment dyeing of fabrics and yarn , and having a good adhesion performance and color fastness. This thesis mainly divided into two parts, namely, the synthesis of water-based polyurethane adhesive research and application of pigment dyeing. Experiments using the prepolymer method, the polyester diol, isobutyl isophorone diisocyanate, and dimethylol propionic acid, as well as a neutralizing agent, small molecule chain extender, etc. Synthesis of a series of water-based polyurethane emulsion. By discussing the reaction temperature, reaction time, catalyst, and other factors, and the optimization of the prepolymerization process conditions in the absence of a catalyst, prepolymerized temperature 80 ℃ for 2.5h, cooled down to about 65 ℃ joining of dimethylol propionic acid and acetone solvent, warmed to 85 ° C chain extender reaction 2.5h. In the aqueous polyurethane adhesive synthetic studies explore the NCO / OH ratio R, the amount of the dimethylol propionic acid solvent, and degree, small molecule chain extender, solid content, and the polyol of the aqueous polyurethane emulsion and gel the impact of the film properties. FI-IR infrared spectroscopy on the synthesis aqueous polyurethane structure characterization, experiments to determine the synthesis of a stable polyurethane solution; applying thermal analyzer aqueous polyurethane film, DSC and TG, i.e., glass transition temperature and thermal decomposition temperature. The emulsion particle size and viscosity were measured using a laser particle size analyzer, and a rotational viscometer, using a centrifuge to test the storage stability of the emulsion. In addition, the film also mechanical properties and water resistance test. The results show that the experiment, 1,4-butanediol polyadipates, to the polyol, NCO / OH ratio R is 2.5, the DMPA optimum dosage of 6% acetone as a solvent and an amount of about 30% and the neutralization degree of 100% Preferably, the comprehensive performance of the N-(2 - hydroxyethyl) ethylenediamine as a small molecule chain extender obtained aqueous polyurethane emulsion particle diameter is small, moderate viscosity, film mechanical properties and water resistance are good. Waterborne polyurethane paint stained mainly discuss the amount of paint, adhesives used penetrant type fixing, curing temperature and other factors on the adhesive application effect and try to paint yarn staining. Considering the cost and use effects, and to determine the optimum amount of paint to 30g / L, the adhesives used 30g / L, peregal O dosage of 5 g / L, Second Baptist Second rolling after pre-baking under the conditions of 150 ° C curing 3min, washed drying can be. A polyadipate 1,4 Comparative application effect of the waterborne polyurethane and polyacrylate adhesive M-HF, the experimental results show that: N-(2 - hydroxyethyl) ethylenediamine as the synthesis of small molecule chain extender butanediol-based waterborne polyurethane adhesive basically achieve the desired application effect.
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