The Synthesis And Application Of A Modified Silicone Polyurethane Easy-care Finishing Agent For Wool Fabrics

As high-grade fabrics,wool fabrics and other textile has irreplaceable advantages,and the style of the cannot be compared,but wool textile prone to felting when washing,it seriously affects the performance and appearance of the fabric.Reported at home and abroad wool fabric easy care finishing method has two main: wool scale layer and deposition of resin,this experiment adopts the latter.This experiment using divinyl three amine and epichlorohydrin a chain extender,the homemade hydroxyalkyl silicone and polyurethane pre dimer copolymerization reaction,hydroxyalkyl silicone oil polyurethane pre polymers,then homemade polyurethane chain extender and hydroxyl alkyl silicone polymers reaction,can get the modified organic silicone emulsion polyurethane wool easy care finishing agent.The best synthesis process for: divinyl three amine and epichlorohydrin reaction time 90 min,reaction temperature of 50 ?;Silane hydroxyl silicone oil sealing agent synthesis best temperature is 65 ?,the best time for120 min,alkane hydroxyl silicone oil polymerization best temperature is 110 ?,the best time of 120 min;Polyurethane pre polymers pre 60 min time,gather the temperature 70 ?,R = 1.6,silicone oil molecular weight M = 3000 g/mol,alkane hydroxyl silicone oil polyurethane pre dimer copolymerization temperature 60 ?,120 min,copolymerization time alkane hydroxyl silicone oil polyurethane pre polymers and chain extension agent,reaction temperature 75 ?,chain extender time 120 min,chain extender best content is7%.The homemade finishing agent for wool fabric finishing,through to the softness of the treated fabrics,crease recovery angle,strength,whiteness,machine wash performance of wool fabric,to get the best application process for: dip(5 min)and two dip two rolling(rolling rate of more than 75%,the dosage of finishing agent 150 g/L)and preliminary drying(preliminary drying temperature 90 ?,bake time 120 s)? curing(curing temperature 150 ?,the curing time 150 s).Homemade finishing agent can make the reactive group of wool fibers by polyurethane chain segment can be crosslinked group of coupling reaction,and through the effects of soft silicone chain made of wool feel is not sharp decline,solves the existing wool easy care finishing agent for wool fabric finishing after the wool of the decline of the elastic and feel,to ensure the quality of wool inherentfeel,the finishing agent is a kind of kill two birds with one stone,the synthesis of less steps,preparation of simple easy to operate;In the application at the same time its finishing process is convenient and quick,so in general the finishing agent both in synthesis and application can improve the production efficiency,bring more profit for the enterprise.