阅读说明：本技术 一种基于电解法的银离子抗菌面料的制备方法 (Preparation method of silver ion antibacterial fabric based on electrolytic method ) 是由 金志华 于 2019-09-18 设计创作，主要内容包括：本发明公开了一种基于电解法的银离子抗菌面料的制备方法,制备方法按照如下步骤：步骤一：以聚丙烯腈为原料加入至溶剂中,搅拌均匀的同时加入聚丙烯腈干粉,搅拌至无任何块状物；步骤二：通过电解法对银进行提纯后,置入在水中进行微电解,释放阴离子,得无色透明的银离子水溶液。步骤三：将步骤二中的银离子水溶液快速置入步骤一加入聚丙烯腈干粉后的溶剂中,调整搅拌速度,搅拌至溶液颜色变为浅黄色时,对原液进行抽真空处理工艺,得到混有银离子的聚合物原液。本发明通过电解法将银提炼成无色无味的透明液体,与液态聚丙烯晴均一混合并纺丝,银成分不易从面料中脱落,能够起到更为持久的抗菌防臭效果。(The invention discloses a preparation method of silver ion antibacterial fabric based on an electrolytic method, which comprises the following steps: the method comprises the following steps: adding polyacrylonitrile serving as a raw material into a solvent, uniformly stirring, adding dry polyacrylonitrile powder, and stirring until no blocky substance exists; step two: after purifying silver by an electrolysis method, putting the purified silver into water for micro-electrolysis to release anions, thereby obtaining colorless and transparent silver ion aqueous solution. Step three: and (3) rapidly placing the silver ion aqueous solution in the step two into the solvent added with the polyacrylonitrile dry powder in the step one, adjusting the stirring speed, and performing a vacuum pumping treatment process on the stock solution when the solution is changed into light yellow, so as to obtain the polymer stock solution mixed with silver ions. According to the invention, silver is refined into colorless and odorless transparent liquid by an electrolytic method, the colorless and odorless transparent liquid is uniformly mixed with liquid polyacrylonitrile for spinning, silver components are not easy to fall off from the fabric, and a more lasting antibacterial and deodorant effect can be achieved.)

1. A preparation method of silver ion antibacterial fabric based on an electrolytic method is characterized by comprising the following steps: the preparation method comprises the following steps:

the method comprises the following steps: adding polyacrylonitrile serving as a raw material into a solvent, uniformly stirring, adding dry polyacrylonitrile powder, and stirring until no blocky substance exists;

step two: after purifying silver by an electrolysis method, putting the purified silver into water for micro-electrolysis to release anions, thereby obtaining colorless and transparent silver ion aqueous solution.

Step three: and (3) rapidly placing the silver ion aqueous solution in the step two into the solvent added with the polyacrylonitrile dry powder in the step one, adjusting the stirring speed, and performing a vacuum pumping treatment process on the stock solution when the solution is changed into light yellow, so as to obtain the polymer stock solution mixed with silver ions.

Step four: the dope trickles formed by extruding the dope from the spinneret orifices enter a spinning channel, the dope trickles are rapidly evaporated under the action of hot airflow in the spinning channel, the dope trickles are solidified and elongated to form nascent fibers while the solvent is gradually removed, and then the finished acrylic fibers are formed through the processing procedures of washing, drafting, oiling and curling.

2. The preparation method of the silver ion antibacterial fabric based on the electrolytic method according to claim 1, characterized by comprising the following steps: in the step one, the solvent can be any one of concentrated sodium thiocyanate aqueous solution, concentrated zinc chloride aqueous solution, nitric acid, dimethyl sulfoxide, dimethylformamide and dimethylacetamide.

3. The preparation method of the silver ion antibacterial fabric based on the electrolytic method according to claim 1, characterized by comprising the following steps: the concentration of silver ions after the solvent is added in the third step is between 0.01ppm and 50 ppm.

4. The preparation method of the silver ion antibacterial fabric based on the electrolytic method according to claim 1, characterized by comprising the following steps: in the third step, the stirring speed is 60-100r/min, the temperature is quickly raised to 70-120 ℃ from room temperature, and the reaction lasts for 2-4 h.

5. The preparation method of the silver ion antibacterial fabric based on the electrolytic method according to claim 1, characterized by comprising the following steps: and in the stirring process of the third step, a vacuum environment is adopted, and the vacuum degree is controlled to be 0.075-0.09 Mpa.

Technical Field

The invention relates to the technical field of antibacterial textiles, in particular to a preparation method of a silver ion antibacterial fabric based on an electrolytic method.

Background

In order to make the fiber products have antibacterial performance, the traditional method is to add antibacterial agents on the fiber products, the antibacterial agents have poor antibacterial effect and weak bonding force with the fiber products, and the antibacterial agents are basically removed after being washed for several times, so that the fiber products lose antibacterial capability. The method for preparing the nano-silver antibacterial non-woven fabric which is generally adopted at present comprises the following steps: the nano silver antibacterial agent is arranged on the non-woven fabric through a post-arrangement process, so that the non-woven fabric has antibacterial activity. The preparation method can effectively control the relevant parameters of the nano-silver antibacterial agent and easily meet different antibacterial requirements.

Therefore, as patent numbers: 201710173280.X, entitled "antibacterial fabric and antibacterial textile containing silver ions", is obtained by blending a carrier loaded with nano-scale silver powder particles at an acrylic fiber spinning stage, wherein the antibacterial effect is reflected by the self action of the silver ions, but the silver powder particles still easily fall off after repeated cleaning, and the combination effect of the silver powder particles has certain limitation. Therefore, on the basis, the scheme provides the silver ion antibacterial fabric which is formed by uniformly mixing the silver ion solution in the acrylonitrile solution stage by the electrolytic method and spinning, wherein the silver ion antibacterial fabric is uniform in mixing, is not easy to drop silver ions and has a more lasting antibacterial effect.

In order to solve the problems, the scheme is developed accordingly.

Disclosure of Invention

Technical problem to be solved

The invention aims to overcome the defects of the prior art and provides a preparation method of silver ion antibacterial fabric based on an electrolytic method, wherein the silver ion concentration prepared by the electrolytic method is 0.01-50 ppm, the silver ion antibacterial fabric and an acrylonitrile solution are stirred and uniformly mixed in a stage, then spinning is carried out to obtain acrylic fibers uniformly mixed with silver ions, the silver is not easy to fall off after repeated cleaning, and the antibacterial effect is more durable.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a preparation method of silver ion antibacterial fabric based on an electrolytic method comprises the following steps:

the method comprises the following steps: adding polyacrylonitrile serving as a raw material into a solvent, uniformly stirring, adding dry polyacrylonitrile powder, and stirring until no blocky substance exists;

step two: after purifying silver by an electrolysis method, putting the purified silver into water for micro-electrolysis to release anions, thereby obtaining colorless and transparent silver ion aqueous solution.

Step three: and (3) rapidly placing the silver ion aqueous solution in the step two into the solvent added with the polyacrylonitrile dry powder in the step one, adjusting the stirring speed, and performing a vacuum pumping treatment process on the stock solution when the solution is changed into light yellow, so as to obtain the polymer stock solution mixed with silver ions.

Step four: the dope trickles formed by extruding the dope from the spinneret orifices enter a spinning channel, the dope trickles are rapidly evaporated under the action of hot airflow in the spinning channel, the dope trickles are solidified and elongated to form nascent fibers while the solvent is gradually removed, and then the finished acrylic fibers are formed through the processing procedures of washing, drafting, oiling and curling.

Preferably, the solvent in the first step can be any one of concentrated sodium thiocyanate solution, concentrated zinc chloride solution, nitric acid, dimethyl sulfoxide, dimethylformamide and dimethylacetamide.

Preferably, the concentration of silver ions after the solvent is added in the third step is 0.01ppm-50 ppm.

Preferably, the stirring speed in the third step is 60-100r/min, the temperature is quickly raised to 70-120 ℃ from room temperature, and the reaction lasts for 2-4 h.

Preferably, in the stirring process of the third step, a vacuum environment is adopted, and the vacuum degree is controlled to be 0.075-0.09 MPa.

The silver ion solution prepared by the electrolytic method in the scheme has no pure silver ion preparation attached with any carrier, has simple and pure components and no impurities, and can be operated by accurate concentration standard measurement because the concentration of the silver ions obtained by the electrolytic method is pure silver ion concentration. Wherein, the graphite carbon rod is used as an anode, and the silver rod is used as a cathode.

Acrylonitrile, a raw material of acrylon, is prepared from propylene, a byproduct of petroleum cracking, and is prepared by carrying out gas-solid phase catalytic reaction on propylene, liquid ammonia and oxygen at 400-500 ℃ (propylene-ammoxidation method), which belongs to the prior art, and the scheme is not described in detail.

(III) advantageous effects

After adopting the technical scheme, compared with the prior art, the invention has the following advantages: according to the preparation method of the silver ion antibacterial fabric based on the electrolytic method, silver is refined into colorless and odorless transparent liquid through the electrolytic method, the colorless and odorless transparent liquid is uniformly mixed with liquid polyacrylonitrile and spun, silver components are not prone to falling off from the fabric, a more lasting antibacterial and deodorant effect can be achieved, the silver ion antibacterial fabric can be used in the fields of underwear, medical consumables, sanitary products and the like, and the silver ion antibacterial fabric has a certain curative effect on foot odor, peeling, wound healing and gynecological diseases.

Detailed Description

The present invention is further illustrated by the following examples, which are not intended to limit the scope of the invention as claimed.