防止纤维素衣料变褪色和活性染料的选择

新型的含过氧化剂活性催化上新合成洗涤剂的使用,引起纤维素织物活性染料染色的种种问题,该文对引起变褪色的原因与防止以及对活性染料的选择进行了探讨。     

活性染料染色物若干色牢度问题分析和改进技术

活性染料染色物的色牢度如光牢度、汗-日光牢度、湿摩擦牢度和耐氯牢度等问题是当今活性染料存在的主要问题之一。本文分析了产生这种问题的原因以及活性料受影响的部位,并提出了改进的技术。     

活性染料染色物若干色牢度问题分析和改进技术

活性染料染色物的色牢度如光牢度、汗-日光牢度、湿摩擦牢度和耐氯牢度等问题是当今活性染料存在的主要问题之一.本文分析了产生这种问题的原因以及活性料受影响的部位,并提出了改进的技术.     

活性染料色变因素探讨

本文针对全棉针织物用活性染料染色后,染色织物受日光、氯化水、酸、碱及热的影响而发生的变、褪色情况进行了研究.通过实验发现,日光影响染色物变、褪色不仅与染料本身结构有关,还和染色深度有关;耐氯化水牢度随染色物的深度增加而增强;活性基为一氯均三嗪基的活性染料染色物的耐酸变、褪色比乙烯砜基为活性基团的活性染料染色物差;染色织物受热的变、褪色和它们的结构有很大的关系,大多数染色织物的热压变色能够自动回复,用ArgafixT8固色剂固色后的染色物受热的变、褪色情况有所好转;染色织物的变、褪色受碱的影响随着pH值和温度的升高其染色物的变、褪色都趋于严重.     

汉麻织物活性染料浸染染色工艺研究

探讨了汉麻在浸染中的提升性能以及盐、碱、固色时间、固色温度、浴比等工艺条件对得色的影响,通过吸固曲线得到了染料在汉麻上的S、E、R、F值。结果表明,活性染料在汉麻上染色效果较好,各项牢度也较好。     

磷铵成品粒子褪色原因分析

阐述了磷铵成品颜色发生变化的机理和影响磷铵产品颜色的主要因素,以及为防止产品褪色应采取的措施。     

活性染料湿短蒸染色工艺分析(二)

湿短蒸染色具有这些优点的原因在于"湿"短"和"蒸",它可以在湿态下(织物含有足够多的束缚水,较少自由水)上染和固色,因此既可以快速上染和固色,又可大大减少染料水解,论文还分析了湿短蒸工艺的优点和不足,提出了今后发展方向.     

低盐染色活性染料简介

该文简要介绍低盐染色的原理和低盐染色用活性染料类别.     

影响活性染料染色织物的日晒牢度因素分析

本文简要阐述了染料光化学褪色的基本原理,由此分析了影响活性染料染色织物日晒牢度各因素并提出了相应的改进措施,对实际生产具有一定的指导意义。     

Colour Yield and Appearance of Cellulosic Fibres Dyed with Reactive Dyes

The factors affecting the colour yield and appearance of cellulosic fibres dyed with reactive dyes have been investigated. Colour yields obtained with trichloropyrimidyl and fluorochloropyrimidyl dyes are compared. Using Danckwerts' equation, the parameter – depth of penetration of reactive dyes – is defined. The appearance of cellulosic substrates dyed with reactive dyes is quantified in terms of the diffusion and reaction properties of the dyes.     

分散染料染色物若干色牢度问题分析和改进技术

近年涤纶染色物的变褪色和落色等色牢度问题以及色点、色斑等是分散染料存在的主要问题之一,本文分析了产生这些问题的原因与改进技术.     

A New Method for Clearing Dyed Polyester Fabrics by Gemini Cationic Surfactants

In the study, a new treatment with cationic surfactants was proposed to remove deposited disperse dyes from polyester fabrics as an alternative to the traditional reduction clearing process. For this purpose, dodecyltrimethyl ammonium bromide and two gemini cationic surfactants (12-4-12 and 14-4-14) were investigated and the optimum operating conditions were obtained using a central composite design. Findings indicated that gemini cationic surfactants can be considered as the best candidates to remove deposited disperse dyes from polyester fabrics. This was confirmed by the results of the scanning electron microscope images, fastness properties and spectrophotometry.     

制冷机组效能劣化的原因分析及对策

介绍了螺杆盐水机组在运行中所出现的异常问题及相应的处理方法，使机组效能恢复，满足生产系统用冷需要。     

Limits of Control in Processing of Dyed Fabrics

Colorimetric procedures are described which enable the user to identify the dyeing variables which require critical control to quantify the magnitude and direction of their effect, to estimate the combined effects of the many variables operating simultaneously in a dyeing process, and to estimate savings in dyes and chemicals made possible by choice of optimum processing conditions.