The dissolution method is the most effective method to identify various fibers. The principle is to use the dissolution characteristics of various fibers in different chemical solvents and at different temperatures to determine their varieties.The fiber to be identified can be put into a test tube, Read More
According to chemical structure, it can be divided into five categories: 1. Stilbene type, used in cotton fiber and some synthetic fibers, papermaking, soap making and other industries, with blue fluorescence;2. Coumarin type, with the basic structure of coumarone, used in celluloid, PVC, etc., with Read More
How to overcome the twist of viscose filament yarn of printing and dyeing color1. The dyeing of viscose filaments is prone to chromatic aberration. The reasons are as follows:①The form of multiple pages in the vertical slits of the fiber surface, so the hygroscopicity, in the whole wet treatment (pr Read More
1. Choose reactive dyes with less floating color after dyeingFloating color is the main reason for the unqualified wet rubbing fastness of dark and dense fabric.The floating dyes of reactive dyes include dyes that have been adsorbed on the fibers without reacting with the fibers, partially hydrolyze Read More
Defects of sulfur dyes and solutionsThe problemSulfur dyes have a short production process, low price, and good fastness. However, they still have many shortcomings and problems in actual production and application, so they still cannot be widely used in various fabrics.Sodium sulfide is used in the Read More
What is acrylic fiber and its application? Acrylic fiber, the scientific name polyacrylonitrile fiber, is a fiber made by spinning acrylonitrile as the main monomer (content greater than 85%) and a small amount of other monomers. Its main feature is that it resembles wool in appearance, feel, elasti Read More
Para el sistema por agotamiento, las máquinas se diferencian por su acción mecánica que actúa sobre la materia textil a tintar, sobre el baño tintóreo o sobre ambas cosas a la vez. Read More
The dyeing mechanism of sulfur dyesFeaturesSulfur dyes are a type of sulfur-containing dyes. The molecules contain sulfur bonds composed of two or more sulfur atoms. When used, they are reduced to leuco body, dissolved in water, and dyed fibers. The dyeing characteristics of sulfur dyes vary dependi Read More
When pure polyester fabrics are dyed with disperse dyes, especially filament fabrics, they always look bright and white after dyeing. Increasing the dye concentration will not help, and the color fastness will be greatly reduced.There are two reasons for the low blackness:1. The cross-section of pol Read More
Polyester fabrics are easy to pilling, and pure cotton clothes tend to be deformed. So what kind of fiber has both the excellent characteristics of cotton and the excellent characteristics of polyester, which makes up for the shortcomings? That is super imitation cotton. What is super imitation cott Read More
Analysis on the types of environmentally friendly dyesCommonly used sulfur dyes are not allergic dyes, carcinogenic dyes, and acutely toxic dyes. They do not contain heavy metals and adsorbable organic halides. They use less salt during application and consume much less water and energy than reactiv Read More
Direct dye was developed after Bottiger discovered Congo Red in 1884. Before this, cotton fibers were dyed with indigo and other natural dyes, which was troublesome. At that time, synthetic dyes were just beginning to be developed, and cotton fibers could not be dyed directly. The cotton fibers must Read More
