纺服学院B轻化101周围讲解.doc

毕 业 论 文 茶树果色素对棉织物 染色性能的研究 专 业 轻化工程 学生姓名 周 围 班 级 B轻化101班 学 号 1010802102 指导教师 于凉云 完成日期 2014年6月10日 茶树果色素对棉织物染色性能的研究 摘要：本文首先介绍了天然色素的来源，介绍了天然色素在国内外的发展状况以及研究本课题目的和意义。分别列出了天然色素的优点、存在的问题和解决方法。然后了介绍了天然色素的染色方法，讨论了提高天然色素对棉纤维上染性能的方法。并对天然色素在染整工业中的发展趋势做出了展望。 接着提取了天然色素茶树果色素，用茶树果色素在棉织物上进行染色试验。在不同pH、温度、时间和染料浓度下进行单因素试验，并以硫酸铝钾和硫酸铜为媒染剂，讨论了预媒处理，同媒处理和后媒处理对染色效果的影响。通过实验数据，得出了茶树果色素的最佳上染条件。分析了其对棉织物的染色的应用和特点。茶树果色素对棉织物的直接染色最佳工艺为：染色时间60min、染色温度80℃、染料用量6%(omf)，pH为2。用最佳工艺直接染色的棉织物，断裂强力为485.7N，断裂伸长为7.23mm，伸长率为4.31%，断裂功为0.44J。急弹回复角为91.50°，缓弹回复角为110.50°。基本满足服用要求。干摩擦色牢度等级为4～5，湿摩擦色牢度等级为4，棉织物的褪色等级为3，棉织物沾色等级为4。基本符合服用要求。使用硫酸铜预媒染色后干摩擦色牢度等级为5，湿摩擦色牢度等级为4～5，棉织物褪色等级为3～4，棉织物沾色等级为4～5。相比直接染色有所提高。 关键词：茶树果；染色；天然色素；棉织物 Dyeing Performance of Tea Fruit Colorant on Cotton Fabric Abstract: This paper described the sources of natural pigments. Described the developments of natural pigment in domestic and Foreign. Presented that researching this topic’s purpose and meaning.Listed the natural pigments’s advantages, shortcomings and solutions. Then introduced dyeing method of natural pigments. Discussed the method of improve natural pigments’s dyeing properties. Look into the future that development of natural pigments in dyeing industry. Then extracted the tea fruit. Experimentd with tea fruit colorant on cotton fabric. Did single factor experiment in different pH, temperature,time, dye concentration. In order to KAl（SO4）2 and CuSO4 as mordant, discussed the effect of Pre- mordant processing, Deal with mordant and After mordant treatment.By the experimental data,drawed the optimal crafts. Analyzed the applications and features that tea fruit colorant on cotton fabric.The optimal crafts that tea fruit colorant on cotton fabric was: Dyeing time is 60min,Dyeing temperature is 80℃,The amount of dye is 6%（omf）,pH is 2. Using the best technology directly dyed cotton fabric, Breaki