丝棉交织物活性染料数码印花预处理浆料的研究

2021-08-05 02:50:25陈文蒙冉菊戴桦根沈崇嘉
丝绸 2021年6期

陈文 蒙冉菊 戴桦根 沈崇嘉

摘要: 针对丝棉织物数码印花存在的得色浅、渗化率差、同色性差等问题,文章采用两种预处理浆料(海藻酸钠浆和复合糊料RM-MV550浆)对丝棉交织物进行预处理,测试两种预处理浆料对丝棉交织物上浆后数码印花的表观色深K/S值、渗透率、精细度、纯棉织物和真丝织物的同色平衡值及色牢度等。结果表明,相较于海藻酸钠糊料,复合糊料RM-MV550预处理丝棉交织物数码印花后表观得色量略低,渗透性更好,精细度和同色性更高,与此同时各项色牢度可达4级及以上,达到生产和使用的要求。

关键词: 丝棉交织物;海藻酸钠;复合糊料;活性染料;数码印花;色牢度

中图分类号: TS194.2

文献标志码: A

Abstract: In order to solve the problems of light tinctorial yield, poor permeability and poor homochromatism, etc. in digital printing of silk/cotton fabric, two kinds of pretreatment slurries(sodium alginate slurry and compound RM-MV550 slurry) were used to pretreat silk/cotton intertexture. The apparent color depth K/S value, permeability and fineness of silk/cotton intertexture after being coated by two kinds of pretreatment slurries and digital printing, the homochromatic equilibrium and color fastness, etc. of pure cotton fabric and silk fabric were tested. The results showed that compared with sodium alginate slurry, after being treated by the compound RM-MV550 slurry, the silk/cotton intertexture had slightly lower apparent tinctorial yield, better permeability, higher fineness and homochromism after digital printing. At the same time, all color fastnesses can reach Grade 4 and above, meeting the requirements of production and use.

Key words: silk/cotton intertexture; sodium alginate; composite slurry; reactive dyes; digital printing; color fastness

随着人们对纺织面料时尚化要求增加,个性化、多样化趋势已经形成,客观上要求产品更新换代的周期越来越短,特别是迎合女性时装面料需求的印花产品日益增多,其中丝棉复合(混纺或交织)面料融合了真丝纤维和棉纤维的优良特性,手感柔软、光泽柔和、吸湿透气、悬垂性好[1],而且价格适中,得到了消费者的喜爱。然而真丝纤维和棉纤维不同的理化性质和结构,使得丝棉复合面料的染色和印花加工变得较为困难。传统的活性染料印花工艺通常存在周期长、精度不高、花回和套色受限制、污染较大等问题,难以满足高端市场对印花面料高精细、快反应、绿色加工等要求,亟须开发适用于丝棉复合面料的高质量印花加工工艺技术。

数码印花是基于精细流体分离成液滴的原理而开发出的新型非接触式印花方式,不同颜色的微小墨滴通过计算机控制的数字喷墨印花机喷射叠加在织物表面形成印花图案所需的颜色[2-3]。……

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