Definition and classification of printing and dyeing auxiliaries
Release Date:2021-12-23 Source:xiashundong Views:708

The textile and printing and dyeing industry includes a series of processing processes from raw materials to products of natural fibers and synthetic fibers such as cotton, wool, silk and hemp. In this series of processing processes, mainly involving sizing, desizing, scouring, bleaching, dyeing, washing, refueling, finishing, printing, dipping, softening, degumming, wet and other operations.

In order to make the process go smoothly and improve the properties of the textile, a variety of different chemicals need to be used. In the process of textile dyeing and dyeing, all kinds of chemicals used to improve the operation efficiency, simplify the process flow, improve the effect of printing and dyeing, improve the quality of textiles, and give textiles excellent performance are collectively referred to as textile dyeing and finishing auxiliaries. That is to say, dyeing and finishing additives refer to some auxiliary chemicals added in textile processing in order to improve processing technology, improve operating efficiency, improve textile quality and wear performance. These auxiliary chemicals are known as textile chemicals or textile dyeing and finishing auxiliaries, referred to as textile auxiliaries. Broadly speaking, starting from fiber manufacturing, processing, including spinning, spinning, weaving, practice bleaching, printing and dyeing, finishing, until the whole process of textile finished products used in addition to dyes are textile dyeing and finishing additives. But, we dont usually put in the textile industry that is commonly used in acid, alkali, salt and simple organisms known as textile auxiliaries, such as sulfuric acid, sodium hydroxide, such as ethanol in the textile dyeing and finishing process USES a lot of, consumption is not small, but they are all general chemical raw materials, has widely used in many departments of the national economy, general that call them for the textile auxiliaries. Therefore, in a narrow sense or more strictly, textile auxiliaries refer to the fine chemicals with specific functions added in the process of textile processing.

The role of dyeing and finishing auxiliaries in textile dyeing and finishing is not large in quantity, but in the textile processing technology has a non-negligible role, sometimes even has an indispensable role. To sum up, the use of textile dyeing and finishing AIDS can play the following roles in the process of textile processing :(1) shorten the processing cycle or reduce the processing process, save time and improve efficiency. (2) Reduce energy consumption, save energy and reduce costs. (3) Reduce waste pollution and improve environmental quality. (4) Improve the printing and dyeing effect and the appearance and intrinsic quality of the fabric. (5) give the textile a special function or style to improve the performance and added value of the product; Dyeing and finishing auxiliaries classification according to the function and function of auxiliaries in the process of dyeing and finishing auxiliaries classification is generally based on the function and function of auxiliaries in the process of dyeing and finishing, that is, according to the processing procedure of textiles, according to which process auxiliaries are used and classified. Textile dyeing and finishing auxiliaries according to its function in the process of textile printing and dyeing processing classification as follows: textile dyeing and finishing auxiliaries of agents, including synthetic fiber with: smoothing agent, emulsifier, wetting agent, antistatic agent, softening agent, antioxidant, fungicide {such as natural fiber with: woolen oil, with oil, silk weaving hair using agent, sizing agent jute spinning additives: Wool washing auxiliaries, and hair oil, degumming auxiliary pretreatment auxiliaries such as: desizing agent, scouring agent, bleaching agent and bleaching dyeing auxiliaries, additives, leveling agent, dispersant, detergent, reductant, deposit agent, prevent migration agent printing auxiliaries such as: printing paste, pigment printing auxiliary agent, fixing agent, thickener, moisturizing factor etc. After finishing auxiliaries: Resin finishing agent, softener, stiffening agent, waterproof agent, flame retardant, antistatic agent, both-proofing agent, coating finishing agent, oil-proof finishing agent, easy decontamination finishing agent and other additives: According to the composition of raw materials, textile auxiliaries can be divided into surfactant auxiliaries and non-surfactant auxiliaries, and each category can be divided into several sub-categories according to the composition. For example, surfactant additives can be divided into anionic surfactant additives, cationic surfactant additives, amphoteric ionic surfactant additives and non-ionic surfactant additives and many other small categories. Auxiliaries containing surfactants mainly include various detergents, penetrating agents, scouring agents, dispersants, emulsifiers, leveling agents, softening agents, antistatic agents, etc. This kind of auxiliaries accounts for about the proportion of the whole printing auxiliaries!" #. Some of them are pure surfactants, and more of them contain surfactants and their compounds, such as emulsifiers, wetting agents, cleaning agents and so on. The assistant that does not contain surface active agent basically has oxidation reducing agent, solvent, inorganic salt kind, fixing agent, anti-wrinkle finishing agent, flame retardant finishing agent, thickening agent, adhesive and so on.

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