织物升温速率对活性染料轧-蒸无盐染色的影响
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摘要
针对活性染料轧-蒸染色固色率低的问题,通过测试湿织物热常数探究织物表面温度变化规律,分析了染液组成和带液率对织物热常数、升温速率及染色性能的影响,研究了织物升温速率对活性染料染色性能的影响。结果表明:添加硫酸钠能够促进织物升温,提高染色织物的K/S值和固色率,但不符合无盐染色的要求;增加带液率,湿织物导热系数和容积热容随之增大,而表面温度却呈现降低趋势;染料固色率与织物表面升温速率变化规律一致,说明提高织物升温速率有助于改善活性染料染色性能;降低织物带液率可提高升温速率,是实现无盐染色的有效途径。
In order to enhance the dye fixation rate of reactive dye in pad-steam dyeing process,the influence of the fabric heating rate on the dyeing properties of reactive dye was investigated to search the method of salt-free dyeing with high fixation rates.The temperature of fabric in the steaming process was calculated using the thermal conductivity and volumetric heat capacity measured.The influence of dye liquor composition and fabric pickup on the variation of fabric temperature was investigated.Besides,the color performance and fastness of the dyed fabrics as well as the dye fixation rates were studied.The results indicate that the fabric heating rates are increased by adding the Na_2SO_4 into padding solutions,thereby enhancing K/S value and dye fixation rate.However,it does not meet requirements of the saltfree dyeing.Increasing the pickup resulted in increasing the thermal conductivity and volumetric heat capacity of fabrics,but decreasing the temperature of fabric.The K/S value of dyed fabrics and the dye fixation rates increased as the fabric pickups decreased,which is substantially in accordance with the variation of the fabric heating rates.The phenomenon confirmes that enhancing fabric heating rates is conducive to improve the dyeing properties of reactive dye.Reducing the fabric pickup can increase the fabric heating rates,which is an effective way to realize salt-free dyeing in continuous pad-steam dyeing.
In order to enhance the dye fixation rate of reactive dye in pad-steam dyeing process,the influence of the fabric heating rate on the dyeing properties of reactive dye was investigated to search the method of salt-free dyeing with high fixation rates.The temperature of fabric in the steaming process was calculated using the thermal conductivity and volumetric heat capacity measured.The influence of dye liquor composition and fabric pickup on the variation of fabric temperature was investigated.Besides,the color performance and fastness of the dyed fabrics as well as the dye fixation rates were studied.The results indicate that the fabric heating rates are increased by adding the Na_2SO_4 into padding solutions,thereby enhancing K/S value and dye fixation rate.However,it does not meet requirements of the saltfree dyeing.Increasing the pickup resulted in increasing the thermal conductivity and volumetric heat capacity of fabrics,but decreasing the temperature of fabric.The K/S value of dyed fabrics and the dye fixation rates increased as the fabric pickups decreased,which is substantially in accordance with the variation of the fabric heating rates.The phenomenon confirmes that enhancing fabric heating rates is conducive to improve the dyeing properties of reactive dye.Reducing the fabric pickup can increase the fabric heating rates,which is an effective way to realize salt-free dyeing in continuous pad-steam dyeing.
引文
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[19]MARSHALL W J.Affinity effects during padding[J].Coloration Technology,2008,71(1):13-20.
[2]KHATRI A,PEERZADA M,MOHSIN M,et al.A review on developments in dyeing cotton fabrics with reactive dyes for reducing effluent pollution[J].Journal of Cleaner Production,2015,87:50-57.
[3]张鑫卿,张健飞,房宽峻,等.应用活性蓝19的棉织物低含水率-湿蒸染色工艺[J].纺织学报,2017,38(2):129-133.ZHANG Xinqing,ZHANG Jianfei,FANG Kuanjun,et al.Low-water content wet-steaming fixation of cotton fabric padded with reactive blue 19[J].Journal of Textile Research,2017,38(2):129-133.
[4]BIOLCHI F,KAWABATA A,TAYLOR J A.Effect of sulphonation level upon the fixation and build up properties of reactive dyes[J].Coloration Technolgy,2006,122(3):153-156.
[5]FANG K J,ZHAO H X,LI J Z,et al.Salt-free dyeing of cotton fabrics modified with cationic copolymer nanospheres using an acid dye[J].Fibers and Polymers,2017,18(2):400-406.
[6]孟春丽,许志忠,吕英智,等.改性棉织物的清洁染色工艺[J].纺织学报,2006,27(9):90-93.MENG Chunli,XU Zhizhong,LYingzhi,et al.Clean dyeing process of modified cotton fabric[J].Journal of Textile Research,2006,27(9):90-93.
[7]丁梦阳,管永华,王海峰.阳离子改性棉织物的染色性能[J].纺织学报,2016,37(9):84-87.DING Mengang,GUAN Yonghua,WANG Haifeng.Dyeing properties of cationic modified cotton fabrics[J].Journal of Textile Research,2016,37(9):84-87.
[8]VON Der Eltz H-U.New techniques of continuous dyeing[J].Journal of the Society of Dyers and Colourists,1985,101(5/6):168-172.
[9]MAO X D,ZHONG Y,XU H,et al.A novel low addon technology of dyeing cotton fabric with reactive dyestuff[J].Textile Research Journal,DOI:10.1177/0040517517700195.
[10]章熙民,任泽霈,梅飞明,等.传热学[M].北京:中国建筑工业出版社,1993:51.ZHANG Ximin,REN Zepei,MEI Feiming,et al.Heat Transfer[M].Beijing:China Architecture&Building Press,1993:51.
[11]LIENHARD J H.Heat Transfer Textbook[M].3rd ed.Cambridge:Phlogiston Press,2002:18.
[12]DONG Y,MCCARTNEY J S,LU N.Critical review of thermal conductivity models for unsaturated soils[J].Geotechnical and Geological Engineering,2015,33(2):207-221.
[13]KHATRI A,WHITE M,PADHYE R,et al.The use of reflectance measurements in the determination of diffusion of reactive dyes into cellulosic fiber[J].Color Research and Application,2014,39(1):63-69.
[14]DEMIRYUREK O,UYSALTURK D.Thermal comfort properties of viloft/cotton and viloft/polyester blended knitted fabrics[J].Textile Research Journal,2013,83(16):1740-1753.
[15]MIZUTANI C,INAGAKI H R,BERTONIERE N.Water absorbancy of never-dried cotton fiber[J].Cellulose,1999,6(2):167-176.
[16]MAO Z P,YU H,WANG Y F,et al.States of water and pore size distribution of cotton fibers with different moisture ratios[J].Industrial&Engineering Chemistry Research,2014,53(21):8927-8934.
[17]TANASHEV Y Y,KRAINOV A V,ARISTOV Y I.Thermal conductivity of composite sorbents“salt in porous matrix”for heat storage and transformation[J].Applied Thermal Engineering,2013,61(2):401-407.
[18]房宽峻,刘尊东,陈伟,等.棉织物表面处理对活性染料喷墨印花的影响[J].纺织学报,2015,36(2):128-132.FANG Kuanjun,LIU Zundong,CHEN Wei,et al.Effect of fabric surface treatment on ink jet printing with reactive dyes[J].Journal of Textile Research,2015,36(2):128-132.
[19]MARSHALL W J.Affinity effects during padding[J].Coloration Technology,2008,71(1):13-20.