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Commonly used additives: 1) Alkali: milky white sheet crystal. Also known as liquid alkali, tablet. It mainly plays a role in cooking when retreating. If dark colors need to be repaired, or white embryo fabrics are also essential to cook high -temperature refined alkali before dyeing. 2) Pure alkali Read More
4. The ion characteristics of the auxiliary must be graspedThere are four types of auxiliary anion, cation and non -ions, and bisexuals. The first three types are commonly used. The anion cannot be used in the same bath with the cedic auxiliary. Infertility, this ions can be used in the same bath wi Read More
1. Technician must master the basic knowledge of the auxiliary agentThis is the prerequisite for choosing the auxiliary. It is necessary to have a basic understanding of the basic concepts, basic structures, performance, and use characteristics of the additive. If abnormal conditions are found, you Read More
According to research, cotton wax can be removed no matter what kind of surfactant is used (generally, cationic surfactant is not used). Therefore, the compound of anionic and nonionic surfactants is generally used, and its HLB value should be considered when compounding, and it is advisable that th Read More
1. Basic functions of high temperature leveling agentHydrophobic disperse dyes are suitable for the dyeing of hydrophobic polyester fibers, but the hydrophobic nature of the dyes determines its low water solubility. This should be said to be a more contradictory thing in the dyeing process with wate Read More
1. Non-reactive color-fixing agent: The color-fixing mechanism of non-reactive color-fixing agents is generally two types of blocking water-soluble groups and film formation on the surface of fibers, which can be divided into cationic color-fixing agents and resin-based color-fixing agents. The cati Read More
Pretreatment steps of nylon and its elastic fabrics: smoothing → desizing → scouring 1. Desizing of nylon woven fabricDesizing agent 8 g/LChelating dispersant 1 g/LLiquid caustic soda (30%) 30g/L Continuous open width desizing, speed 40m/min, using the first two working fluids, overflow washing one Read More
Desizing purpose During the weaving process, the warp yarns are subject to greater tension and friction, and are prone to breakage. In order to reduce warp breakage and improve weaving efficiency and grey fabric quality, warp yarns need to be sizing before weaving. The fibers in the yarns are cohesi Read More
The broad concept of penetrant refers to a class of chemicals that can help the substance to be penetrated into the substance to be penetrated. Generally, anionic or nonionic surfactants or organic and inorganic solvents are used in printing and dyeing.In each printing and dyeing process, various au Read More
