1, shortening the processing cycle or reducing the processing procedures, saving the processing time and improving the processing efficiency.
2. Reduce energy consumption, save energy and reduce consumption.
3. Reduce the pollution of three wastes and improve the environmental quality.
4. Improve the printing and dyeing effect and the appearance and internal quality of the fabric.
5. Give textiles some special functions and effects, and improve the usability and added value of products.
Classification of textile dyeing and finishing auxiliaries
There are many kinds of textile dyeing and finishing auxiliaries with complex components and different properties and uses. It is necessary to classify it in order to better understand and use it. Different angles have different classification methods. There are generally four methods and eight methods.
First, according to whether the additive remains on the fiber for a long time.
There are two situations in which additives remain on fibers. According to these two situations, textile dyeing and finishing auxiliaries can be divided into two categories: removal auxiliaries and retention auxiliaries.
1. Removable auxiliaries Fibers or fabrics treated with auxiliaries can improve the processing efficiency or make the processing process go smoothly, but they should be removed in the subsequent process to avoid affecting the subsequent process. Such auxiliaries are called removable auxiliaries, such as textile size and chemical fiber oil.
2. After treating the residual additives, the additives are mechanically deposited on the fibers or chemically combined with them, which will not be removed in the subsequent processes, resulting in many lasting effects. Many finishing agents, flame retardants, softeners, etc. Are all residual AIDS.
Second, according to the classification of raw materials that constitute additives.
According to the composition of raw materials, textile auxiliaries can be divided into surfactant auxiliaries and non-surfactant auxiliaries.
1, surfactant auxiliaries A large part of textile dyeing and finishing auxiliaries is composed of surfactants, accounting for more than half of all textile auxiliaries. Some are pure surfactants, and more contain surfactants and their complexes, such as emulsifiers, wetting agents, detergents and so on.
2. Non-surfactant auxiliaries This kind of dyeing and finishing auxiliaries does not contain surfactants, but consists of polymer compounds or other organic and inorganic substances, such as resin finishing agents, flame retardants, fluorescent brighteners, etc.
According to the composition, each category can be further divided into several subcategories, such as surfactant auxiliaries, anionic surfactant auxiliaries, cationic surfactant auxiliaries, zwitterionic surfactant auxiliaries and nonionic surfactant auxiliaries.
Third, classification according to morphology.
Textile dyeing and finishing auxiliaries can be divided into liquid products and solid products according to their forms. Liquid products can be divided into water-soluble, emulsion and solvent. Liquid products are easy to prepare, accurate in measurement and convenient to use. Therefore, textile dyeing and finishing auxiliaries are mostly liquid products. In recent years, with the improvement of environmental protection requirements and strict requirements for safety and fire prevention, the proportion of water-soluble and emulsion products in liquid products has increased, while solvent-based products have decreased, and solid products are mostly granular or flaky, which is characterized by convenient transportation and storage.
Four, according to the application of additives.
The principle of classification is to classify textiles according to their processing procedures and the process of using additives. This classification method has several different classification principles according to the different boundaries of processing procedures.
A textile dyeing and finishing auxiliaries can be roughly divided into two categories: textile auxiliaries and dyeing and finishing auxiliaries;
B the other is divided into five categories: textile auxiliaries, pretreatment auxiliaries, dyeing auxiliaries, printing auxiliaries and finishing auxiliaries;
C between the first two can be divided into three categories: pretreatment auxiliaries (including textile auxiliaries), printing and dyeing auxiliaries and finishing auxiliaries. Each category is subdivided into several subcategories, such as dyeing auxiliaries, levelers, dispersants, fixing agents, fluorescent whitening agents, pigment printing auxiliaries, etc.
Commonly used textile dyeing and finishing auxiliaries are divided into three categories: textile pretreatment auxiliaries (including textile auxiliaries and pretreatment auxiliaries), printing and dyeing auxiliaries (including dyeing auxiliaries and printing auxiliaries) and finishing auxiliaries, and each category is further subdivided into one category of textile pretreatment auxiliaries, such as sizing agent, oil agent, scouring auxiliaries, wetting agent, penetrant, bleaching agent and detergent. ; B printing and dyeing auxiliaries, such as emulsifier, dispersant, leveler, fixing agent, defoamer, pigment printing adhesive, thickener, fluorescent whitening agent, etc. ; C fabric finishing auxiliaries, such as resin anti-wrinkle finishing agent, softener, antistatic agent, waterproof agent, flame retardant, etc. The above information comes from Hanke Fine.