阅读说明：本技术 一种仿生结构生色、抗菌真丝的制备方法 (Preparation method of bionic structure chromogenic antibacterial real silk ) 是由 刘国金 周岚 戴香玲 王相林 于 2020-07-07 设计创作，主要内容包括：本发明公开了一种仿生结构生色、抗菌真丝的制备方法,公开了一种仿生结构生色、抗菌真丝的制备方法。本发明以多孔二氧化硅微球、纳米氧化锌、粘合剂为主要原料制备印花浆料,然后将其施加在真丝基材上,经丝网印花法获得具有抗菌功能的光子晶体生色结构。该方法不仅能够在真丝表面获得靓丽多彩的仿生结构色效果,还能同时赋予真丝抗菌性,具有操作简单、价格低廉、条件容易控制、可实现个性化加工等优势,所得真丝可用于制备被套、靠垫和面巾等系列产品。(The invention discloses a preparation method of a bionic structure chromogenic antibacterial real silk, and discloses a preparation method of a bionic structure chromogenic antibacterial real silk. The invention uses porous silicon dioxide microspheres, nano zinc oxide and adhesive as main raw materials to prepare printing slurry, and then the printing slurry is applied on a real silk substrate to obtain a photonic crystal chromogenic structure with an antibacterial function by a silk screen printing method. The method can obtain beautiful and colorful bionic structural color effects on the surface of the real silk, can endow the real silk with antibacterial property, has the advantages of simple operation, low price, easily controlled conditions, realization of personalized processing and the like, and the obtained real silk can be used for preparing series products such as quilt covers, back cushions, face towels and the like.)

1. A preparation method of a bionic structure chromogenic and antibacterial real silk is characterized in that printing slurry is prepared by taking porous silicon dioxide microspheres, nano zinc oxide and an adhesive as main raw materials, then the printing slurry is applied to a real silk substrate, and a photonic crystal chromogenic structure with an antibacterial function is obtained through a silk screen printing method.

2. The method for preparing the bionic structure chromogenic antibacterial real silk as claimed in claim 1, wherein the average particle size of the porous silica microspheres is 200-300 nm.

3. The method for preparing the bionic structure chromogenic antibacterial real silk according to claim 1, wherein the monodispersion index of the porous silica microspheres is not more than 0.08.

4. The preparation method of the bionic structure chromogenic antibacterial real silk according to claim 1, wherein the average pore diameter of the porous silica microspheres is 7-10 nm.

5. The method for preparing the bionic structure chromogenic antibacterial real silk according to claim 1, wherein the average particle size of the nano zinc oxide is 5 nm.

6. The method for preparing the bionic structure chromogenic and antibacterial real silk according to claim 1, wherein the adhesive is one of waterborne polyurethane and polyacrylate.

7. The preparation method of the bionic structure chromogenic antibacterial real silk according to claim 1, which is characterized by comprising the following steps:

(1) preparation of a pre-assembly liquid: adding nano zinc oxide into monodisperse porous silicon dioxide microsphere emulsion, then placing the emulsion in a vacuum oven, adjusting the vacuum degree to-0.1 Mpa, and preparing silicon dioxide microsphere pre-assembly liquid loaded with zinc oxide through vacuum adsorption;

(2) centrifuging the pre-assembly liquid: placing the pre-assembly liquid prepared in the step (1) in a centrifuge with the rotating speed of 8000 r/min for centrifuging for 30 min, taking out, pouring out the supernatant, and taking out the lower viscous liquid for later use;

(3) adding an adhesive into the viscous liquid obtained in the step (2), and uniformly stirring to obtain printing paste;

(4) and (3) placing the real silk fabric to be printed on the lower surface of the printing screen frame, applying the printing paste prepared in the step (3) to the upper surface of the printing screen frame, scraping and coating by a scraper, taking out the real silk fabric bearing the printing paste, and placing the real silk fabric in a 50 ℃ drying oven for drying to obtain the real silk fabric with the bionic structural color effect and the antibacterial function.

Technical Field

The invention belongs to the field of antibacterial real silk, and particularly relates to a preparation method of a bionic structure chromogenic antibacterial real silk.

Background

The real silk fabric is a textile which is formed by taking natural protein fiber as a basic component, is soft and smooth, and has elegant and luxurious appearance and good wearing comfort. Along with the improvement of living standard of people, real silk textiles are more popular with consumers, and especially, the functional real silk products are strongly good. The after-finishing is a common method for endowing the real silk textile with functionality, and has the advantages of simple and convenient operation, low requirement on equipment and the like. However, the after-finishing is usually carried out on the basis of dyeing or printing the fabric, that is to say obtaining a functional silk textile by conventional methods, and requires at least two steps of working procedures, namely dyeing and after-finishing. Under the current sustainable development concept of pursuing energy conservation, consumption reduction and environmental protection, if the processing procedures can be reduced or eliminated on the basis of ensuring the obtaining of the functional real silk textiles, the method has more important practical significance.

The photonic crystal is an artificial crystal structure formed by two or more different refractive index materials according to a certain periodic arrangement, and is basically characterized by having a photonic band gap capable of controlling the propagation of light waves. By controlling the size and monodispersity of structural elements forming the photonic crystal, the structural color effect with bright color and obvious iridescence (different colors under different observation angles) can be obtained through Bragg diffraction in a visible light range. In addition, some special functions can be obtained by regulating and controlling the performance of the structural element, for example, if the structural element with the ultraviolet resistance function is adopted, the obtained photonic crystal has the ultraviolet resistance; if a structural element with strong hydrophobicity is adopted, the photonic crystal has good hydrophobicity.

Based on the deep knowledge of the photonic crystal, the applicant of the invention innovatively proposes to construct a functional photonic crystal color-generating structure on the real silk base material, thereby realizing the coloring of the real silk textile and endowing the real silk textile with the functionality. The monodisperse colloidal microspheres with antibacterial property are used as structural elements, and the photonic crystal chromogenic structure is obtained on the real silk fabric through self-assembly, meanwhile, the bionic coloring of the real silk is realized, and the antibacterial property is endowed. The invention can realize the coloring of the fabric and endow the fabric with an antibacterial function through a one-step method, is an improvement to the conventional two-step method steps of coloring firstly and finishing secondly, is beneficial to energy saving and consumption reduction to a certain extent and is beneficial to promoting the development of functional textiles;

therefore, a preparation method of the bionic structure chromogenic antibacterial real silk is provided.

Disclosure of Invention

The invention mainly aims to provide a preparation method of a bionic structure chromogenic antibacterial real silk, which can effectively solve the problems in the background technology.

In order to achieve the purpose, the invention adopts the technical scheme that:

a preparation method of a bionic structure color-developing and antibacterial real silk takes porous silicon dioxide microspheres, nano zinc oxide and an adhesive as main raw materials to prepare printing slurry, and then a photonic crystal color-developing structure with an antibacterial function is obtained on a real silk substrate by a silk screen printing method. The method is convenient, rapid, green and environment-friendly, can rapidly prepare the photonic crystal chromogenic structure with the antibacterial function on the real silk fabric substrate, simultaneously endows the real silk fabric with structural color effect and antibacterial performance through a one-step method, and is favorable for promoting the development of functional textiles.

In order to solve the technical problems, the following technical scheme is adopted:

a preparation method of a bionic structure chromogenic and antibacterial real silk is characterized in that printing slurry is prepared by taking porous silicon dioxide microspheres, nano zinc oxide and an adhesive as main raw materials, then the printing slurry is applied to a real silk substrate, and a photonic crystal chromogenic structure with an antibacterial function is obtained through a silk screen printing method.

Preferably, the porous silica microspheres have an average particle size of 200-300 nm.

Preferably, the porous silica microspheres have a monodispersion index of not more than 0.08.

Preferably, the average pore diameter of the porous silica microspheres is 7-10 nm.

Preferably, the nano zinc oxide has an average particle size of 5 nm.

Preferably, the adhesive is one of aqueous polyurethane and polyacrylate.

Preferably, the method comprises the steps of:

(1) preparation of a pre-assembly liquid: adding nano zinc oxide into monodisperse porous silicon dioxide microsphere emulsion, then placing the emulsion in a vacuum oven, adjusting the vacuum degree to-0.1 Mpa, and preparing silicon dioxide microsphere pre-assembly liquid loaded with zinc oxide through vacuum adsorption;

(2) centrifuging the pre-assembly liquid: placing the pre-assembly liquid prepared in the step (1) in a centrifuge with the rotating speed of 8000 r/min for centrifuging for 30 min, taking out, pouring out the supernatant, and taking out the lower viscous liquid for later use;

(3) adding an adhesive into the viscous liquid obtained in the step (2), and uniformly stirring to obtain printing paste;

(4) and (3) placing the real silk fabric to be printed on the lower surface of the printing screen frame, applying the printing paste prepared in the step (3) to the upper surface of the printing screen frame, scraping and coating by a scraper, taking out the real silk fabric bearing the printing paste, and placing the real silk fabric in a 50 ℃ drying oven for drying to obtain the real silk fabric with the bionic structural color effect and the antibacterial function.

The invention has the beneficial effects that: the invention provides a preparation method of a bionic structure chromogenic antibacterial real silk, which takes porous silica microspheres loaded with antibacterial nano zinc oxide as structural elements, constructs photonic crystals on a real silk substrate by a screen printing method, and endows the real silk with structural color effect and antibacterial performance by a one-step method. The prepared real silk textile produces different colors and luster under different observation angles, and simultaneously has a certain antibacterial effect. The method has the characteristics of easy implementation, good universality and the like, shortens the preparation process, and is beneficial to promoting the development of functional textiles.

Drawings

Fig. 1 is a scanning electron microscope image of the photonic crystal structure obtained in example 1.

FIG. 2 is a microscope image of the structural color of the photonic crystal obtained in example 1.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.