Cu-containing non-woven fabric and method for preparing the same

Abstract

This application provides a Cu-containing non-woven fabric with antibacterial and antiviral properties and application thereof. The preparation method includes the following steps: web-forming, pre-wetting, and spunlace bonding a fiber in sequence to obtain the spunlace non-woven base fabric; padding and sizing the spunlace non-woven base fabric in an organic copper complex solution to obtain a Cu-containing spunlace non-woven fabric, wherein the Cu-containing spunlace non-woven fabric contains copper of ≥500 ppm; and drying and winding the Cu-containing spunlace non-woven fabric after being padded and sized. The method is simple and easy to achieve industrialization. This application also provides a Cu-containing non-woven fabric with antibacterial and antiviral properties having excellent antibacterial and antivirus properties. This application also provides an application of the Cu-containing non-woven fabric with antibacterial and antiviral properties which has an advantage of being widely used.

What is claimed is: 
     
         1 . A method for preparing a Cu-containing non-woven fabric, comprising the following steps:
 preparing a spunlace non-woven base fabric: forming a web from a fiber, pre-wetting the web, and spunlacing the web to obtain the spunlace non-woven base fabric;   padding and sizing: padding and sizing the spunlace non-woven base fabric in an organic copper complex solution to obtain a Cu-containing spunlace non-woven fabric, wherein the Cu-containing spunlace non-woven fabric contains copper of ≥500 ppm; and   drying and winding the Cu-containing spunlace non-woven fabric.   
     
     
         2 . The method for preparing the Cu-containing non-woven fabric according to  claim 1 , wherein the fiber comprises at least one selected from a group consisting of a natural fiber, an artificial cellulose fiber, an artificial protein fiber, a polyacrylonitrile fiber, and a polyvinyl alcohol fiber. 
     
     
         3 . The method for preparing the Cu-containing non-woven fabric according to  claim 1 , wherein the fabric obtained after forming the web contains any one selected from a group consisting of ≥5% by weight of a cotton fiber, 5-65% by weight of a cellulose fiber, 5-65% by weight of a protein fiber, 5-65% by weight of a polyacrylonitrile fiber, or 100% by weight of a polyvinyl alcohol fiber having a low temperature solubility; and
 the organic copper complex solution is obtained by adding water to a 5.5 wt % initial organic copper complex solution by a volume of 10-30 times more than that of the 5.5 wt % initial organic copper complex solution. 
 
     
     
         4 . The method for preparing the Cu-containing non-woven fabric according to  claim 3 , wherein the 5.5 wt % initial organic copper complex solution is prepared by the following steps:
 preparing a coordination ionic liquid: mixing urea, caprolactam, and acetamide thoroughly, heating, and keeping a temperature until the caprolactam and the urea are melted and liquefied thoroughly to obtain the coordination ionic liquid; and   preparing the organic copper complex solution: adding a coordination solid mixture containing sodium chloride, potassium permanganate, sodium peroxide, and copper powder into the coordination ionic liquid under stirring to cause a reaction, cooling, and pouring into pure water to obtain an initial organic copper complex solution containing 5.5 wt % copper.   
     
     
         5 . The method for preparing the Cu-containing non-woven fabric according to  claim 4 , wherein in the step of preparing the coordination ionic liquid, a ratio of urea:caprolactam:acetamide is in a range of 1:(0.2-0.4):(0.2-0.4) by weight, a heating temperature after mixing urea, caprolactam, and acetamide is in a range of 100−120° C., and a time period of keeping the temperature is in a range of 0.5-1 h. 
     
     
         6 . The method for preparing the Cu-containing non-woven fabric according to  claim 4 , wherein, in the step of preparing the organic copper complex solution, a ratio of sodium chloride:potassium permanganate:sodium peroxide:copper powder is in a range of 1:(1-2):(1-2):(2.5-2.9) by weight, and a ratio of coordination solid mixture:coordination ionic liquid is in a range of 1:(3-3.5) by weight. 
     
     
         7 . The method for preparing the Cu-containing non-woven fabric according to  claim 1 , wherein when the fiber is one or more selected from a group consisting of a polyester fiber, a polyamide fiber, a polyvinyl chloride fiber, and a polypropylene fiber, the spunlace non-woven base fabric is subjected to a step of padding in a chitosan-ascorbic acid solution before being padded and sized. 
     
     
         8 . The method for preparing the Cu-containing non-woven fabric according to  claim 7 , wherein the step of padding in the chitosan-ascorbic acid solution before being padded and sized comprises padding the spunlace non-woven base fabric in the chitosan-ascorbic acid solution and drying the spunlace non-woven base fabric at a temperature of 150-170° C. for 5-10 min, in which the chitosan-ascorbic acid solution is prepared by adding 5-10 parts by weight of chitosan powder into 25-30 parts by weight of acetic acid and 60-70 parts by weight of water under magnetic stirring until the chitosan powder is dissolved, and adding 3-5 parts by weight of ascorbic acid under stirring. 
     
     
         9 . The method for preparing the Cu-containing non-woven fabric according to  claim 7 , the spunlace non-woven base fabric is subjected to a step of soaping after the step of padding in the chitosan-ascorbic acid solution, comprising soaping the dried spunlace non-woven base fabric in a 5 g/L soaping agent at a soaping temperature of 35-40° C. for 5-10 min, and drying at a drying temperature of 50-60° C. 
     
     
         10 . A Cu-containing non-woven fabric prepared by the method according to  claim 1 .