阅读说明：本技术 基于石墨烯的肺部防护织物及其制备方法 (Graphene-based lung protective fabric and preparation method thereof ) 是由 朱君 张心依 曹文涛 朱竞尧 金彩虹 于 2019-10-16 设计创作，主要内容包括：本发明提供一种基于石墨烯的肺部防护织物及其制备方法,包含涤纶纤维织物以及石墨烯功能层,其中石墨烯功能层以石墨烯为基材,表面修饰肺表面活性物质。本发明制备的肺部防护织物具备了石墨烯对颗粒物的静电吸附和肺表面活性物质对颗粒物的粘附作用,具有更好的去除粉尘的效果。本发明以涂布或印刷的方式使石墨烯树脂溶液覆盖且嵌入织物组织中间,形成石墨烯功能层,使得织物具有优异的附著度及耐水洗性。(The invention provides a graphene-based lung protection fabric and a preparation method thereof. The lung protective fabric prepared by the invention has the electrostatic adsorption of graphene to particles and the adhesion of lung surface active substances to the particles, and has a better dust removal effect. According to the invention, the graphene resin solution is coated or embedded in the fabric tissue in a coating or printing manner to form the graphene functional layer, so that the fabric has excellent adhesion degree and water washing resistance.)

1. The graphene-based lung protection fabric is characterized by comprising at least one polyester fiber fabric and a graphene functional layer attached to the surface of the fabric, wherein the graphene functional layer takes graphene as a base material and modifies lung surface active substances on the surface.

2. The graphene-based lung protective fabric according to claim 1, wherein the graphene functional layer is disposed between two layers of polyester fiber fabric.

3. The method for preparing a graphene-based lung protective fabric according to claim 1 or 2, comprising the steps of:

(1) soaking graphene in a concentrated sodium hydroxide solution, stirring for 24 hours, then washing and drying, dispersing 5mg of soaked graphene in 50ml of an alkaline organic solvent, adding 10ml of tosyl chloride, reacting at 80-200 ℃ for 20-120 minutes, introducing nitrogen gas for protection in the reaction process, and reacting to obtain a graphene intermediate;

(2) dissolving a lung surfactant in 0.1 mol/L alkaline aqueous solution, adding the obtained graphene intermediate into a reaction system for reflux, wherein the mass ratio of the lung surfactant to the graphene intermediate (0.1-1) is 1, the reaction temperature is 80-120 ℃, the reaction time is 15-150 minutes, and reacting to obtain graphene with a surface modified lung surfactant;

(3) dispersing graphene of a surface modified lung surfactant in a mixed solvent of two solvents with the same volume ratio and different boiling points to form a suspension solution, wherein the boiling point of one solvent is not more than 80 ℃, the boiling point of the other solvent is not less than 120 ℃, adding at least one hydrophobic resin into the suspension solution, the mass ratio of the resin to the graphene is (1-10): 1, and dispersing the solution by mechanical force to form a graphene resin solution, wherein the hydrophobic resin is one or more of polyurethane, polymethyl methacrylate and polyethylene terephthalate;

(4) coating or printing a graphene resin solution on the surface of a polyester fiber layer, removing the mixed solvent in the graphene resin solution to form a graphene layer attached to the surface of the fabric, and then tightly bonding with the other polyester fiber layer.

4. The method for preparing a graphene-based lung protective fabric according to claim 3, wherein the basic organic solvent is one or more of ethylenediamine, triethylamine, triethanolamine, ethanolamine, dimethylformamide and pyridine.

5. The method of claim 3, wherein the lung surfactant comprises Dipalmitoylphosphatidylcholine (DPPC), SP-A, SP-B, SP-C, SP-D protein.

6. The method of claim 3, wherein the aqueous alkaline solution is one of sodium hydroxide, potassium hydroxide, sodium bicarbonate, sodium carbonate, and ammonia.

7. The method of claim 3, wherein the solvent having a boiling point of not greater than 80 ℃ is one or more of acetone, methyl ethyl ketone, ethyl acetate, and butyl acetate.

8. The method of claim 3, wherein the solvent having a boiling point of not less than 120 ℃ is one or more of N, N-dimethylacetamide, dimethylsulfoxide, dimethylformamide, and dimethylacetamide.

9. The method of claim 3, wherein the mechanical force is one or more of ultrasonic, homogeneous stirring, ball milling, and high pressure shearing.

Technical Field

The invention relates to the field of preparation of functional fibers, in particular to a graphene-based lung protective fabric and a preparation method thereof.

Background

The graphene has excellent optical, electrical and mechanical properties, has important application prospects in the aspects of materials science, micro-nano processing, energy, biomedicine, drug delivery and the like, and is considered to be a revolutionary material in the future. Among them, graphene fibers are one of the main fields of application thereof. The graphene can be used as a nano enhanced multifunctional additive to improve the performance of the composite fiber, and can also be used for preparing pure graphene fiber for a basic composition unit. Graphene and cellulose with high-quality characteristics are used as raw materials, graphene fibers and textiles thereof are prepared by the currently industrially available wet-proof technology, on one hand, the extremely high tensile strength of the graphene fibers is utilized, covalent crosslinking is introduced among graphene layers of the graphene fibers, the tensile strength and the elongation at break of the graphene fibers can be enhanced, and the graphene fiber is expected to be superior to carbon fibers in the fields of aerospace, automobiles, military industry and the like. At present, most of graphene nanofibers reported in China are prepared by an electrostatic spinning method, and reduced graphene oxide micron fibers are also reported to be prepared by a hydrothermal synthesis method, such as the graphene nanofiber disclosed in patent publication No. CN 106592007B: graphene micron fibers, a preparation method, a nerve tissue scaffold and a repair system, wherein the surfaces of the prepared graphene-based micron fibers are in a nano porous structure with a uniform rule.

Textile products are one of the important products for haze protection. Along with the improvement of the life quality of people, people put forward higher and higher requirements on the functions of textile products. Among numerous haze protection products, the haze mask is of great concern. Masks with microfilter filters, nanofilaments as filtering material are most typical today, for example: n95 mask, etc. The nanofiltration low-energy wing-shaped air filter material mask is mainly characterized in that wing-shaped fiber filter materials are adopted, each filter material fiber wire is provided with 32 wing-shaped petals, the cross section of the traditional fiber under an electron microscope is circular, and the cross section of the wing-shaped material is wing-shaped with 32 wings. And the electrostatic adsorption effect of the graphene can also play a role in adsorbing dust, so that the development of the graphene-based lung protection fiber has a good application prospect.

Disclosure of Invention

In view of the shortcomings of the prior art, the present invention aims to provide a graphene-based lung protective fabric.

Yet another object of the present invention is to: provides a preparation method of the product.

The purpose of the invention is realized by the following scheme: the graphene-based lung protection fabric comprises at least one polyester fiber fabric and a graphene functional layer attached to the surface of the fabric, wherein the graphene functional layer takes graphene as a base material and modifies lung surface active substances on the surface.

On the basis of the scheme, the graphene functional layer is arranged between the two layers of polyester fiber fabrics. Namely: the lung protection fabric comprises an upper fiber layer, a lower fiber layer and a middle graphene functional layer.

The graphene functional layer comprises hydrophobic resin and functional graphene of a surface-modified lung surface active substance dispersed in the hydrophobic resin. The lung protective fabric provided by the invention has the functions of electrostatic adsorption of graphene to particles and adhesion of lung surface active substances to the particles, and has a better dust removal effect.

The invention also provides a preparation method of the graphene-based lung protection fabric, which comprises the preparation of the polyester fiber fabric and the graphene functional layer, and at least comprises the following steps:

(1) soaking graphene in concentrated sodium hydroxide, stirring for 24 hours, then washing and drying, dispersing 5mg of soaked graphene in 50ml of alkaline organic solvent, adding 10ml of tosyl chloride, reacting at 80-200 ℃ for 30-120 minutes, introducing nitrogen gas for protection in the reaction process, and reacting to obtain a graphene intermediate;

(2) dissolving a lung surfactant in 0.1 mol/L alkaline aqueous solution, adding the obtained graphene intermediate into a reaction system for reflux, wherein the mass ratio of the lung surfactant to the graphene intermediate is 0.1:1-1:1, the reaction temperature is 80-120 ℃, the reaction time is 30-150 minutes, and reacting to obtain graphene with a surface modified lung surfactant;

(3) graphene of the surface modified lung surfactant is dispersed in a mixed solvent (volume ratio is 1: 1) of two solvents to form a suspension solution, wherein the boiling point of one solvent is not more than 80 ℃, and the boiling point of the other solvent is not less than 120 ℃. Adding at least one hydrophobic resin into the suspension solution, wherein the mass ratio of the resin to the graphene is 1:1-10:1, and dispersing the solution by using a mechanical force to form a graphene resin solution, wherein the hydrophobic resin is one or more of polyurethane, polymethyl methacrylate and polyethylene terephthalate;

(4) coating or printing a graphene resin solution on the surface of a certain polyester fiber layer, removing the mixed solvent in the graphene resin solution to form a graphene layer attached to the surface of the fabric, and then tightly bonding with the other polyester fiber layer.

According to the invention, the graphene resin solution is coated or embedded in the fabric tissue in a coating or printing manner to form the graphene functional layer, so that the fabric has excellent adhesion degree and water washing resistance.

Wherein the alkaline organic solvent is one or more of ethylenediamine, triethylamine, triethanolamine, ethanolamine, dimethylformamide and pyridine.

The lung surfactant comprises Dipalmitoylphosphatidylcholine (DPPC) and SP-A, SP-B, SP-C, SP-D protein.

The alkaline aqueous solution is one of sodium hydroxide, potassium hydroxide, sodium bicarbonate, sodium carbonate and ammonia water.

The solvent with the boiling point not higher than 80 ℃ is one or more of acetone, butanone, ethyl acetate and butyl acetate.

The solvent with the boiling point not less than 120 ℃ is one or more of N, N-dimethylacetamide, dimethyl sulfoxide, dimethylformamide and dimethylacetamide.

The mechanical force is one or more of ultrasonic wave, homogeneous stirring, ball milling and high-pressure shearing.

The invention has the advantages that:

(1) the lung protective fabric prepared by the invention has the electrostatic adsorption of graphene to particles and the adhesion of lung surface active substances to the particles, and has a better dust removal effect.

(2) The graphene resin solution is coated or embedded in the fabric tissue in a coating or printing mode to form the graphene functional layer, so that the fabric has excellent adhesion degree and water washing resistance.

(3) The preparation method has the advantages of simple preparation process, easy control of reaction, good stability, industrialization and wide popularization prospect.

Detailed Description

The technical solution of the present invention is further described below by specific examples. The following examples are further illustrative of the present invention and do not limit the scope of the present invention.