自分散酞菁蓝15∶3的制备及其在粘胶纤维原液着色中的应用

Preparation of self-dispersing Phthalocyanine Blue 15∶3 particles and its application in spun-dyed viscose fiber

针对粘胶纤维原液着色色浆保存周期短、运输成本高的问题,采用喷雾干燥法制备了自分散酞菁蓝15∶3,探讨了喷雾干燥时进风温度、进料速率、压力和空气流量等对自分散颜料粒径的影响,借助透射电子显微镜和扫描电子显微镜等探究了自分散颜料的表观形貌,考察了自分散颜料在粘胶纤维中的分散状态。结果表明,进风温度为165℃、进料速率为10 mL/min、压力为0.2 MPa、空气流量为2.95 m^(3)/min时,自分散酞菁蓝15∶3粒径为171 nm,与水的接触角为13°,自分散性能良好,耐热、耐酸碱、耐电解质和离心稳定性均在80%以上。自分散颜料与粘胶纺丝液相容性良好,在原液着色粘胶纤维中分布均匀,纤维耐摩擦、耐水洗色牢度均达到4级。

Aiming at short storage time and high transportation cost of the color paste for spun-dyed viscose fibers,the self-dispersing Phthalocyanine Blue 15∶3 pigment powder were prepared by the spray drying method.The effects of the spray drying parameters including air inlet temperature,feeding rate,pressure and air flow rate on the properties of self-dispersing pigment were discussed.In addition,transmission electron microscope(TEM)and scanning electron microscope(SEM)were employed to study the apparent morphology,and the dispersion state of self-dispersing pigments in viscose fiber was investigated.The results show that when the inlet air temperature is 165℃,the feeding rate is 10 mL/min,the pressure is 0.2 MPa,and the air flow rate is 2.95 m^(3)/min,particle size of the self-dispersing Phthalocyanine Blue 15∶3 pigment powder is 171 nm,and the water contact angle is 13°.The pigments show excellent self-dispersing properties,and the centrifugal,acid and alkali resistance,heat resistance and salt resistance stability are all above 80%.The self-dispersing Phthalocyanine Blue 15∶3 deminstrates a good interface compatibility with the viscose spinning solution and is homogeneously dispersed in the spun-dyed viscose fiber.The color fastness against rubbing and washing reach grade 4.