Application of atmospheric Atmospheric Plasma Cleaning Machine in Nylon dyeing

• Categories:Technical Support
• Author:plasma cleaning machine-surface treatment equipment-CRF plasma machine-Sing Fung Intelligent Manufacturing
• Origin:
• Time of issue:2020-12-18
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(Summary description)Nylon fibers were treated with atmospheric pressure plasma cleaning machine and dyed with disperse dyes and fluorescent dyes before and after treatment. The results showed that plasma treatment could increase the surface roughness of fiber, increase the dyeing depth of fiber, improve the dyeing property of nylon fiber, and have no obvious effect on the fiber strength. Atmospheric pressure plasma cleaning machine technology is increasingly widely used in textile, can be used for fabric sizing, desizing, hemp degumming, wool anti felt shrinkage, synthetic fiber hydrophilic treatment, high performance fiber bond enhancement and other aspects. Atmospheric pressure plasma cleaning function can effectively improve the surface properties of nylon fiber and polymer, mainly because oxygen low pressure or atmospheric pressure plasma can introduce oxygen elements into the fiber surface in the form of hydroxyl and carboxyl groups, thus improving its hydrophilicity; Or because the tetrafluoride plasma can introduce fluorine-containing groups (-CF3, -CF2) into the fiber to form hydrophobic surface. The plasma treatment under atmospheric pressure reduces the vacuuming process, and the continuous treatment can be realized with relatively simple operation. In atmospheric plasma, the active substance oxidizes the oxygen, nitrogen and other elements in the air, and introduces it into the surface of nylon fiber, which increases the number of surface polarity genes and enhances the surface polarity, which is conducive to the adsorption and fixation of dyes. Plasma treatment on the surface of nylon fiber by atmospheric pressure plasma cleaner can improve the content of polar groups such as C-OH, C-OOH and C-NH2 on the surface of the fiber, improve the wettability of the fiber, accelerate the diffusion of dyes, increase the color depth of the fiber, and improve the color performance of the fiber to a certain extent. Plasma treatment can improve the diffusion rate, saturation and absorptivity of nylon fibers, that is, the dyeing properties of nylon fibers can be improved by atmospheric plasma treatment. Atmospheric plasma treatment, on the one hand, increases the smooth surface roughness of the fiber surface, enhances the hygroscopic properties of the fiber, is conducive to the adsorption of dye molecules on the fiber surface, and speeds up the diffusion rate of dye; In the process of atmospheric plasma treatment, nitrogen and oxygen elements in the gas enter the fiber surface in the form of hydroxyl, carboxyl, amino and so on, which increases the electronegativity of the fiber surface, which is conducive to the diffusion of dye molecules to the center of the fiber, making it fixed in the fiber interior, thus improving the dyeing rate of the fiber. Atmospheric pressure plasma cleaning machine to nylon fiber treatment almost no damage. The reason is that plasma treatment only modifies the surface layer of nylon fiber, which has no effect on the overall properties of the polymer, and the orientation and crystallization state of the fiber remain unchanged.