Preparation method of modified cotton fiber material

Abstract

The invention discloses a preparation method of a modified cotton fiber material. The preparation method comprises: (1) adding an appropriate amount of nano-zinc oxide particles into a certain mass percentage of a polyethylene glycol solution, adjusting the pH value to 6.5-7.5, carrying out ultrasonic dispersion for 1-2h, and standing the dispersion liquid to obtain a modified zinc oxide dispersion liquid, (2) adding a chitosan imine solution into the modified zinc oxide dispersion liquid, controlling the temperature to 20-30 DEG C and carrying out ultrasonic dispersion for 2-5h to obtain a modified zinc oxide-chitosan imine dispersion liquid, and (3) carrying out alkali washing, slurry removal and oxidation treatment on a cotton fiber material, putting the cotton fiber material into a finishing agent containing the modified zinc oxide-chitosan imine dispersion liquid, modifying the cotton fiber material through a two-dipping and two-rolling method, drying the treated cotton fiber material at 70-90 DEG C for 5-8min, soaking the cotton fiber material in deionized water for 24h, carrying out dehydration and carrying out drying at 60-80 DEG C for 10-20min. The modified cotton fiber material has antibacterial and anti-ultraviolet functions and high durability. The finishing process is simple and environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of fabrics, in particular to a preparation method of a modified cotton fiber material. Background technique [0002] There are two main categories of textile anti-ultraviolet finishing agents, one is anti-ultraviolet shielding agent, which reduces the transmittance of ultraviolet light by means of reflection, refraction or scattering to achieve the technical purpose of anti-ultraviolet. There are mainly nano-inorganic materials such as zinc oxide, titanium dioxide, iron oxide, and silicon dioxide. When the nanometer particle size is equivalent to the wavelength of ultraviolet light, it will scatter or reflect the ultraviolet light of the corresponding wavelength, and play the role of fabric anti-ultraviolet. However, such anti-ultraviolet screeners generally have technical problems such as weak affinity for fabrics, complicated finishing process, and low washing fastness of finished fabrics. Another type ab...

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Problems solved by technology

Among them, salicylates have a narrow absorption wavelength range, poor stability, low fastness, and easy discoloration; benzophenones are currently widely used in the industry for fabric anti-ultraviolet materials, but there is a problem that the fabric is easy to yellow after finishing. Technical problem; benzotriazoles have good UVA absorption effect, but have no reactive groups, and need to be fixed on the surface of the fabric with the help of resin or adhesive to improve its wash fastness, but this will lead to the fabric feel after finishing Rough, decreased moisture absorption capacity