有机硅改性聚氨酯涂层剂的合成及应用  

Preparation and application of silicone modified polyurethane coating agent

作　　者：曲鹏飞[1] 朱清峰[1] 

机构地区：[1]中国纺织科学研究院北京中纺化工股份有限公司,北京100025

出　　处：《印染》2011年第21期6-9,34,共5页China Dyeing and Finishing

摘　　要：以甲苯二异氰酸酯TDI、聚醚N220和N330、二羟甲基丙酸DMPA、羟基硅油KF-6001和甲乙酮肟MEKO等为主要原料,合成了有机硅改性封闭型水性聚氨酯。傅里叶变换红外光谱仪(FT-IR)对其测试表明,活泼的异氰酸酯基团已经被封闭,羟基硅油KF-6001已被成功引入到聚氨酯的主链之中;差示扫描量热法(DSC)分析表明,以MEKO为封闭剂的合成产物其解封温度范围为128～149℃,吸热峰值为144℃。因此,确定织物涂层剂的焙烘温度为160℃。与普通水性外加交联型聚氨酯手感剂相比,有机硅改性封闭型水性聚氨酯具有很好的稳定性,作为织物涂层剂,可达到静水压、水洗牢度和手感之间的性能平衡,且具有良好的耐洗性。The blocked silicone-modified water-borne polyurethane is prepared with toluene diisocyanate（TDI）, polypropylene glycol（ N220 and N330）, dimethylolpropionic acid （ DMPA）, hydroxyl-terminated silicone （ KF-600I ） and methyl ethyl ketoxime （MEKO）. The chemical structures are characterized by Fourier transfer-infrared ray （FT-IR） analysis. The results indicate that the active group --NCO has been blocked and polysiloxane segment has been incorporated into polyurethane chain. Differential scanning calorimeter （DSC） reveals that the de-blocking temperature of coating agent ranges from 128 ℃ to 149 ℃, and the endothermic peak is 144 ℃ with MEKO as the blocking agent, therefore, the appropriate curing temperature is set at 160 ℃ in textile coating. Compared with traditional water-based polyurethane, the blocked silicone-modified polyurethane features better stability. Coated fabric has good performance balance between water pressure resistance, washing fastness and handle.

关 键 词：涂层整理 涂层剂 水性聚氨酯 有机硅改性 织物 

分 类 号：TS195.597[轻工技术与工程—纺织化学与染整工程]