阅读说明：本技术 一种纳米银线抗菌复合材料及其制作方法 (Nano silver wire antibacterial composite material and preparation method thereof ) 是由 赖耀升 江建志 彭丰章 于 2019-09-30 设计创作，主要内容包括：本发明涉及抗菌复合材料制备技术领域,本发明的技术方案为：一种纳米银线抗菌复合材料及其制作方法,所述纳米银线抗菌复合材料包括层基材和纳米银线层,所述纳米银线层采用纳米银线墨水涂布或印刷在所述层基材的上表面,所述层基材为棉布或纸；所述纳米银线层的厚度为1um以内。纳米银线交织成网,纳米银线不易释出污染环境；棉布或纸上印刷涂布的纳米银线层,直接与皮肤或食物接触,可达到最佳的杀菌效果。(The invention relates to the technical field of preparation of antibacterial composite materials, and the technical scheme of the invention is as follows: a nanometer silver line antibacterial composite material and its preparation method, the said nanometer silver line antibacterial composite material includes layer substrate and nanometer silver line layer, the said nanometer silver line layer adopts nanometer silver line ink to coat or print on the upper surface of the said layer substrate, the said layer substrate is cotton cloth or paper; the thickness of nanometer silver line layer is within 1 um. The nano silver wires are interwoven into a net, so that the nano silver wires are not easy to release to pollute the environment; the nano silver wire layer printed and coated on the cotton cloth or paper is directly contacted with skin or food, thereby achieving the best sterilization effect.)

1. The nano-silver wire antibacterial composite material is characterized by comprising a layer of base material and a nano-silver wire layer, wherein the nano-silver wire layer is coated or printed on the upper surface of the layer of base material by adopting nano-silver wire ink.

2. The silver nanowire antibacterial composite material of claim 1, wherein: the layer of base material is cotton cloth or paper or aluminum foil or plastic film.

3. The silver nanowire antibacterial composite material of claim 1, wherein: the thickness of nanometer silver line layer is within 1 um.

4. A method for manufacturing the nano silver wire antibacterial composite material according to any one of claims 1 to 3, characterized by comprising the following steps:

s1, growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-1000um by a chemical method, and mixing the nano silver wire with the special coating liquid to prepare the nano silver wire ink, wherein the concentration of the nano silver wire ink is 0.1-0.3%.

S2, printing or coating the nano silver wire ink on cotton cloth or paper under pressure, wherein the thickness is within 1 um;

s3, carrying out heat treatment on the nano silver wire layer by adopting an oven at about 200 ℃ or strong light irradiation, and forming a multi-layer net-shaped woven three-dimensional structure after heat curing and film forming, wherein the mesh size is distributed within 100 um.

Technical Field

The invention relates to the technical field of preparation of antibacterial composite materials, in particular to a nano silver wire antibacterial composite material and a preparation method thereof.

Background

The nano silver has good bactericidal effect, is a powdery silver simple substance, has the particle size of less than 100nm, and is generally between 10 and 50 nm. The nano silver particles can be directly combined with oxygen metabolizing enzyme (-SH) of the thallus, so that the unique action mechanism of the thallus is that the thallus is suffocated, and most of microbes such as bacteria, fungi, mildew, spores and the like which are contacted with the nanometer silver particles can be killed. More than 650 bacteria can be killed within a few minutes. Has strong inhibiting and killing effects on dozens of pathogenic microorganisms such as escherichia coli, gonococcus, chlamydia trachomatis and the like, and can not generate drug resistance. The smaller the particle size, the stronger the bactericidal performance.

Fresh foods such as fish, shrimp and meat are easily polluted by bacteria in the environment, and the fresh keeping is difficult. The traditional plastic bag with a common plastic film for preservation can not prevent bacterial breeding, and the environmental plastic pollution is serious, Chinese patent CN104005303A discloses a nano-silver composite antibacterial paper, a manufacturing method and application thereof, wherein a silver nitrate soaking mode is used to make nano-silver particles attach to the paper, which is obviously unreasonable, even if the nano-silver particles attach to the paper, the nano-silver particles are easy to separate out or drop out, the plastic film is replaced by the antibacterial preservation paper containing nano-silver, so that the plastic bag can not only preserve food with antibiosis, but also avoid the environmental plastic pollution, the nano-silver particles adsorbed in the paper are easy to separate out, can also have certain influence on ecology when released into the environment, and can also kill beneficial bacteria in the environment. The nano silver particles separated out by long-term contact can form silver deposition in organisms, and can generate adverse effects on organisms and human bodies, and even obvious poisoning phenomena can be caused by excessive deposition.

The antibacterial cotton cloth containing the nano silver can effectively protect wounds and prevent bacteria from breeding, is widely applied to the field of medical and health products such as wound dressings, bandages, antibacterial bed sheets and cushions, female sanitary towels and the like, adopts nano silver particles as antibacterial components in the prior art, such as Chinese patent CN107151861A, but the nano silver particles adsorbed in cotton cloth fibers are easy to separate out, can have certain influence on ecology when released into the environment, and can kill beneficial bacteria in the environment. The nano silver particles separated out by long-term contact can form silver deposition in organisms, and can generate adverse effects on organisms and human bodies, and even obvious poisoning phenomena can be caused by excessive deposition.

Disclosure of Invention

The invention aims to provide a nano silver wire antibacterial composite material and a preparation method thereof.

The technical purpose of the invention is realized by the following technical scheme:

the nano silver wire antibacterial composite material comprises a layer of base material and a nano silver wire layer, wherein the nano silver wire layer is coated or printed on the upper surface of the layer of base material by adopting nano silver wire ink.

As a preferred scheme of the nano silver wire antibacterial composite material, the layer base material is cotton cloth or paper or aluminum foil or plastic film.

As an optimal scheme of the nano silver wire antibacterial composite material, the thickness of the nano silver wire layer is within 1 um.

A method for preparing a nano silver wire antibacterial composite material comprises the following steps:

s1, growing a nano silver wire with the diameter of 10-100 nanometers and the length of 10-1000um by a chemical method, and mixing the nano silver wire with the coating liquid to prepare the nano silver wire ink, wherein the concentration of the nano silver wire ink is 0.1-0.3%.

S2, printing or coating the nano silver wire ink on cotton cloth or paper under pressure, wherein the thickness is within 1 um;

s3, carrying out heat treatment on the nano silver wire layer by adopting an oven at about 200 ℃ or strong light irradiation, and forming a multi-layer net-shaped woven three-dimensional structure after heat curing and film forming, wherein the mesh size is distributed within 100 um.

In conclusion, the invention has the following beneficial effects:

1. the nano silver wires are interwoven into a net, so that the nano silver wires are not easy to release to pollute the environment;

2. the nano silver wire layer printed and coated on the cotton cloth or paper is directly contacted with skin or food, so that the optimal sterilization effect can be achieved;

3. can print patterns, improve the appearance, reduce the consumption of the nano silver wires and reduce the cost.

4. The nano silver wire layer has high ductility, can permeate into the surface of cotton cloth or paper, and is not easy to fall off when being folded, curled and crumpled along with the cotton cloth or paper.

Drawings

Fig. 1 is a schematic structural diagram of a nano silver wire antibacterial composite material provided by the invention.

The corresponding part names indicated by the numbers and letters in the drawings:

wherein: 1-a layer of substrate; 2-layer of nanosilver.

Detailed Description

In order to make the technical means, the original characteristics, the achieved purposes and the effects of the invention easy to understand, the invention is further described with reference to the figures and the specific embodiments.

As shown in fig. 1, the antibacterial composite material of silver nanowires provided by the invention comprises a layer substrate and a silver nanowire layer, wherein the silver nanowire layer is coated or printed on the upper surface of the layer substrate by using silver nanowire ink.

Preferably, the thickness of the layer of silver nanowires is within 1 um.