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合成了水分散有机硅－聚氨酯嵌段共聚物乳液，研究了反应动力学、共聚物的性能及应用．首先由八甲基环四硅氧烷以膨润土为催化剂，醋酐为分子量调节剂合成分子量为端羟基聚硅氧烷齐聚物，再使之与甲苯二异氰酸酯及聚乙醇（ＰＥＧ）于丙酮中反应制得端异氰酸酯基的有机硅－聚氨酯预聚体（ＰＳｉ－ＰＥＵ）．将此预聚体用３－（Ｎ－甲基二乙醇氯化铵）－１，２－环氧丙烷扩链，加水乳化即得阳离子型的有机硅－聚氨酯嵌段共聚物（ＰＳｉ－ＰＵ）水乳液．此种水乳液是一种优良的织物整理剂可用以改善织物的表面性能、吸湿性和永久抗静电效果，同时可提高织物的力学性能和耐磨性能．
Synthesis of a water-dispersed silicone - polyurethane block copolymer emulsion, the reaction kinetics, copolymer properties and applications. First of all, octamethylcyclotetrasiloxane bentonite as a catalyst, acetic anhydride as a molecular weight regulator synthesis of hydroxyl-terminated polysiloxane oligomers, and then make it with toluene diisocyanate and polyethylene glycol (PEG) in acetone The isocyanate-terminated silicone-polyurethane prepolymer (PSi-PEU) was obtained by reaction. The prepolymer was chain extended with 3- (N-methyldiethanolammonium chloride) -1,2-propylene oxide and emulsified with water to obtain a cationic silicone-polyurethane block copolymer (PSi-PU) Water emulsion. This aqueous emulsion is an excellent fabric finishing agent that can be used to improve the fabric surface properties, moisture absorption and permanent antistatic effect, while improving the mechanical properties and wear resistance of fabrics.