高压上浆过程中浆液流变性能的分析与研究
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摘要
纺织上浆用的浆液是一种非牛顿流体,其粘度在浆纱的上浆过程中并非固定不变,而是随着浆液剪切速率的变化而变化,由此影响着浆纱的上浆性能。尤其对于高压上浆来说,浆纱的速度有了显著的提高,浆液的剪切速率较之普通(常压)上浆有了显著的提高。剪切速率的变化对上浆速度、上浆率具有较大的影响,研究高压上浆过程中浆液剪切速率的变化对于全面理解高压上浆,进一步控制与提高高压上浆的质量具有重要的意义。
     本课题在研究不同浆料的流变性能的基础上,研究高压上浆过程中浆液的流变性能,主要研究速度的变化对浆液流变性能的影响,并进一步研究浆液流变性能的变化与上浆率、浆纱速度、压浆力的关系,以找到它们相互间的科学规律,从而合理地制定高压上浆工艺,确保高压上浆的质量。主要研究内容包括:
     1、研究剪切速率对浆液流变性能的影响。
     2、研究高压上浆过程中浆纱速度的提高对浆液流变性能的影响。
     3、研究几种不同浆液的流变性能,并进行相互的比较。并通过比较与分析研究,选择最优的适合高压上浆的浆液品种。
     4、研究高压上浆过程中浆液浓度对其流变性能的影响。
     5、研究压力的提高(主要是压浆力的提高)对浆液流变性能的影响。
     通过分析和研究,得出结论:
     1、随着剪切速率的增大,浆液的粘度会逐渐变小。当剪切速率较低时,粘度的变化比较明显,粘度由高到低的下降速度很快,后来随着剪切速率的不断增大,当剪切速率达到一定的范围时,浆液粘度的变化较小,逐渐趋于缓和。且浆液浓度越大,由剪切速率引起的粘度变化幅度越大,变化趋势越明显。结合同心圆筒旋转粘度计测量原理,得出高压上浆过程中浆液的剪切速率变化范围一般为12~40 l/s。
     2、在浓度相同,剪切速率差别很小时,马铃薯原淀粉浆液的粘度较玉米原淀粉浆液的粘度低,而在高压上浆中,浆料的配方应在含固率不变的前提下,适当降低粘度,且比较相同剪切速率下不同浓度淀粉浆液的粘度,发现马铃薯原淀粉的粘度值变化幅度较小,表现更为稳定,所以推断马铃薯原淀粉更符合高压上浆的要求。
     3、由实验可以得出,随着混合浆液中PVA含量的不断提高,浆液的起始粘度随之降低。且相同条件下,马铃薯/PVA混合浆的粘度明显低于玉米/PVA混合浆的粘度,由此我们可以得出,前者更适合于高压上浆。
     4、高压上浆过程中,浆纱速度大幅提高,浆液的剪切速率随之显著提高,从而使得浆液粘度大幅降低,且浆纱速度所引起的剪切速率(12~40 l/s)处于浆液粘度随剪切速率的增大而下降较明显的那一段,当剪切速率达到一定数值时(50 l/s左右),浆液的粘度逐步趋于稳定,实现高浓、低粘的上浆特点,这是高压上浆和常压上浆之间的本质区别。
     5、高压上浆过程中,浆纱速度增大的同时,压浆力也相应地增加,而压浆力的提高也使得浆液的剪切压力相应增加,且随着剪切压力的增加,浆液的粘度随之下降,当剪切压力达到一定数值时,浆液的粘度逐步趋于平稳。这与剪切速率对浆液流变性能的影响基本相同。
     论文最后对课题今后的发展方向进行了展望。
As a kind of non-newton fluid,the sizing agent has a variable viscosity during the sizing process of textile yarns.It's viscosity changes along with the changing of shear rate of the sizing agent.And it brings the effect to sizing performance of the sizing textile yarns.The shear rate of sizing agent improves greatly after the significant improvement of the sizing speed in high-pressure sizing process.It has much influence on the sizing speed and sizing ratio of the textile yarns.The study on the variadness of the sizing agent shear rate in high-pressure sizing will have a terrible concernful meaning to the deeply understanding and better cotrolling of high-pressure sizing.
     Based on the research of theological performance of several kinds of sizing agent,the paper studies the rheological properties of the textile size in high-pressure sizing process.It focus on the study of effect to the rheological performance of size caused by the improvement of sizing speed.It also studies the relationship between rheological performance and sizing ratio,sizing speed,sizing pressure.Thus to find the regularity among them and it will be beneficial to optimize the sizing process and improve the sizing quality subsequently.
     The paper includes several aspects as below:
     1.The impact of shear rate to theological performance of size was studied.
     2.In order to find the impact of sizing speed to size's theological performance,the theological performance of several kinds of sizing agent were studied in high-pressure and normal-pressure sizing respectively.
     3.The rheological performance of several kinds of sizing agent were studied and compared to find the best suitable sizing agent for high-pressure sizing.
     4.The impact of concentration to theological performance of size in high-pressure sizing was studied.
     5.The influence of sizing pressure to size's theological performance was alse studied in this paper.
     After analying,some deductions were attained.It follows as below:
     1.The viscosity of size decreases as the shear rate increases gradually.The viscosity drops quickly when the shear rate is at a low level.With the increase of shear rate,the viscosity changes slightly when the shear rate reaches certain area.And with the increase of the size concentration,the viscosity's rangeability increasees too.According to the concentric cylinder rotation viscometry,we find that the shear ratio comes within 12~40 1/s in hige-pressure sizing.
     2.The viscosity of potato starch is more lower and steady than corn starch at the same concentration and shear rate.So the patato starch is much better than corn starch in high-pressure sizing,for the lower viscosity of size is more suitable for high-pressure sizing when their concentration is all the same.
     3.With the increase of PVA in the mixed size,the initial viscosity of the size drops consequently.And at the same conditions,the viscosity of the size of mixed patato and PVA is much lower than mixed corn and PVA.Thus the former is more suitable for high-pressure sizing.
     4.in the process of high-pressure sizing,with the increase of sizing speed and shear rate,size viscosity decreases sharply.When the shear ratio reaches a certain point,the size viscosity will be steady,It meets the need of high-pressure sizing for the high-concentration and low-viscosity size.It's the key difference between high-pressure sizing and nomal-pressure sizing.
     5.During the high-pressure sizing process,sizing pressure and the shear pressure increases together at the same time of the increase of sizing speed.It result eventually in the decrease of size viscosity.And the size viscosity decreases sharply in the shear ratio of 12~40 1/s.When the shear pressure reaches a certain point,the size viscosity will be steady,The regularity is the same as shear ratio to size viscosity.
     Finally,this discourse illustrates the prospects of the developing direction of this topic.
引文
[1]周永元.浆料化学与物理[M].北京:纺织工业出版社,1985.
    [2]张渭滨.淀粉糊浆的流变力学性质研究[J].华侨大学学报(自然科学版),1995,16(1):16-20
    [3]胡飞,李平凡等.微细化马铃薯淀粉流变性质的研究[J].粮食与饲料工业,2002,(7):41-43
    [4]邱威扬,邱贤华.聚乙烯醇-淀粉共混溶液流变特性研究[J].高分子学报,1996,(3):365-368
    [5]张守勤,马成林等.玉米高压淀粉糊流变特性的研究[J].农业工程学报,1997,13(2):198-202
    [6]朱苏康.高压上浆中的一些理论问题[J].中国纺织大学学报,1997,23(3):85-88
    [7]Wang,Ya-Janea;Truong,Van-Denb;Wang,Linfenga.Structures and rheological properties of corn starch as affected by acid hydrolysis.Carbohydrate Polymers,2003,52(3)
    [8]Paul V Seydel,James R Hunt.The Rheological Characteristic of Textile WarpSizing.,Atlanta,Georgia:Seydel-Woolley & Co,280-282
    [9]R.B.K.Wong and J.Lelievre.Rheological Characteristics of Wheat Starch Pastes Measured under Steady Shear Conditions Rheological characteristics of wheat starch pastes measured under steady shear conditions.Journal of Applied Polymer Science,1982,27(5):1433-1440
    [10]Viilar,Marcelo A.a;Thomas,Edwin L.a;Armstrong,Robert C.a.Rheological properties of thermoplastic starch and starch/poly(ethylene-co-vinyl alcohol) blends.Polymer,1995,36(9):1869-1876
    [11]Teizo Isono,Futoshi Sugimoto,Kazuhiko Komurasaki and Tohei Yamamoto.Rheological Characteristics of Sizing Agent for Spun Yarn.SEN' I GAKKAISHI,2000,56(10):493-496
    [12]Bird R B,Stewart W E,Lightfast E N,Transpot phenomena,Wiley,1960:103
    [13]潘宏根.流体及其特性[J].工程流体力学,1985,(10):1-13
    [14]Closs,C.B,Conde-Petit.Phase separation and rheology of aqueous starch/galactomannan systems.Carbohydrate Polymers.1999,39(1):67-77
    [15]孙载正.实际流体与理想流体流动的差别[J].工程流体力学,1985,(10):90-93
    [16]王伟,黄柏宗.高温高压下水泥浆的流变性及其模式.油田化学,1994,11(1):18-21
    [17]李汴生,曾庆孝,彭志英等.高压处理后大豆分离蛋白溶解性和流变特性的变化及其机理.高压物理学报,1999,13(1):23-29
    [18]李汴生,曾孝庆,芮汉明等.高压对食品胶溶液流变特性的影响.高压物理学报,2001,15(1):65-69
    [19]Stolt M,Stoforos N G,Taoukis P S,et al.Evaluation and modelling of theological properties of high pressure treated waxy maize starch dispersions[J].Journal of Food Engineering,1999,40(4):293-298
    [20]张跃雷.含水高温高压流体的物理特性和流变特性.国外油田工程,22(11):16-19
    [21]Lagarrigue,S,Alvarez,G.The rheology of starch dispersions at high emperatures and high shear rates:A review.Journal of Food Engineering.2001,50(4):189-202
    [22]高群玉,杨宜功.影响淀粉湖流变特性因素的研究[J].食品工业科技,1995,(4):10-14
    [23]卢晓江.流变学概论讲义[M].天津轻工业学院
    [24]Sisko A.W.The flow of lubricating greases[J].Ind.Eng.Chem.,no.50,1958:1789-1792
    [25]Ree F.H.,Ree T.,Eyring H.,Ind.Eng.Chem.,no.50,1958:1036
    [26]Cross,M.M.,Rheology of non-newtonian fluids:A new flow equation for pseudo-plastic systems[J],J.Colloid Sci.,no.60,1965:417-437
    [27]S kelland A.H.P.,Non-newtonian flow and heat transfer[J],John Wiley and Sons:Inc,1967
    [28]Meter D.M.,Bird R.B.,AIChe J.no.10,1964:878
    [29]Ringham KC.,Fluidity and Plasticity[M],New York,McGraw-Hill,1922:215-218
    [30]Casson N.,In Mill C.C.,Rheology of disperse systems[M],London,Pergamon,1959
    [31]陈克复,卢晓江等.食品流变学及其测量[M].轻工业出版社.1989:139
    [32]约翰·J·阿克洛尼斯,沈明琦.聚合物粘弹性引论[M].宇航出版社.1984:16-22
    [33]埃斯曼,哈斯巴根,韦根特著,刘家文译.滚动轴承设计与应用手册.武汉:华中工学院出版社.1985:154-155
    [34]吴其晔,巫静安.高分子流变学导论.北京:化学工业出版社,1994
    [35]唐江华.浆液流变特性测量方法分析[J].油气储运,1996,15(9):18-21
    [36]唐江华.浆液流变试验结果分析[J].水力采媒与管道运输1996,(3):10-14
    [37]任晓枫.旋转粘度计测定浆体流变参数的计算方法[J].水利学报.1995,(9):75-81
    [38]任晓枫.流变仪测定浆体流变参数的计算方法[J].西北水资源与水工程,1994,5(3):45-51
    [39]任晓枫.浆体流变试验数据处理方法分析[J].水利水电工程设计.1996,(2):50-53
    [40]Paul V Seydel,James R Hunt.Textile warp sizing.Seydel-Woolley &Co,Atlanta,Georgia:280-282
    [41]黄故.棉织原理.北京:纺织工业出版社,1995
    [42]万明.“高压、高浓、低粘”上浆工艺的研究[J].广西纺织科技,2002,31(2):9-12
    [43]万明,钱现.高压上浆工艺指标的定量定性研究[J].棉纺织技术,2000,28(4):11-14
    [44]萧汉滨.高压上浆工艺探讨.棉纺织技术,1994,(7)
    [45]萧汉滨.高压上浆工艺量化的研讨[J].棉纺织技术,2001,29(5):8-12
    [46]洪仲秋.全面理解高压上浆的优越性[J].棉纺织技术,2002,(6):12-15
    [47]宋孝浜.高压上浆工艺的探讨[J].现代纺织技术,2006,(3):26-28
    [48]陈益民,薛建定.高压高浓低粘上浆工艺探讨.棉纺织技术,2001,29(5):13-15
    [49]郑帼,孙宇清.剪切速率对表面活性剂/水体系的作用研究[J].天津工业大学学报,1998,(12):14-17
    [50]陈九顺,刘忠义等.聚丙烯酰胺稀溶液的粘度与剪切速率的关系的研究[J].高分子学报,1994,(2):244-248
    [51]侯克鹏,杨晓雷.浆液流变性及其测试研究[J].试验技术与试验机,2002,42(1-2):18-19,22
    [52]Stolt M,Stoforos N G,Taoukis P S,et al.Evaluation and modelling of rheological properties of high pressure treated waxy maize starch dispersions[J].Journal of Food Engineering,1999,40(4):293-298
    [53]沈建福,吴晓琴等.马铃薯酸解淀粉的研究[J].浙江农业大学学报,1997,23(3):297-300
    [54]孙秀萍,于九皋,刘延奇.不同淀粉的酸解历程及性质研究.精细化工,2004,21(3):202-205
    [55]李兆丰,顾正彪.酸解氧化淀粉的制备及其性质研究.食品与发酵工业,2005,31(2):14-17
    [56]黄柏龄,王军需,楼金府等.高压上浆的理论与实践.棉纺织技术,1993,(8):22-25

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