Antimicrobial Nonwoven Cloth, Preparation Method Thereof and Mask with the Antimicrobial Nonwoven Cloth

Abstract

The present invention discloses an antimicrobial nonwoven cloth, whose raw materials comprising the following components in weight ratio: 75˜100 parts of polypropylene, 10˜25 parts of sodium p-styrenesulfonate, 10˜20 parts of silane coupling agent, 0.15˜1 part of polyhexamethylene biguanidine hydrochloride (PHMB), 0.05˜0.4 part of zinc salt, 1˜5 parts of bamboo charcoal fiber, and 0.01˜0.1 part of nano˜meter fumed silica. Further, a method of preparing the antimicrobial nonwoven cloth and a mask with antimicrobial nonwoven cloth are disclosed, to prevent bacteria from spreading through the air and saliva.

1 . An antimicrobial nonwoven cloth, whose raw materials comprising the following components in weight ratio: 75˜100 parts of polypropylene, 10˜25 parts of sodium p-styrenesulfonate, 10˜20 parts of silane coupling agent, 0.15˜1 part of PHMB, 0.05˜0.4 part of zinc salt, 1˜5 parts of bamboo charcoal fiber, and 0.01˜0.1 part of nano-meter fumed silica. 
     
     
         2 . A method of preparing an antimicrobial nonwoven cloth, comprising the following steps:
 (1) Weighing: Weighing the following components in weight ratio: 75˜100 parts of polypropylene, 10˜25 parts of sodium p-styrenesulfonate, 10˜20 parts of silane coupling agent, 0.15˜1 part of PHMB, 0.05˜0.4 part of zinc salt, 1˜5 parts of bamboo charcoal fiber, and 0.01˜0.1 part of nano-meter fumed silica;   (2) heating the weighed aqueous solution of polypropylene, sodium p-styrenesulfonate, silane coupling agent in a water bath to 60±2° C., keeping warm and stirring for 2.5±0.5 h, and carrying out UV irradiation for 15±2 min and then cooling to 25±2° C. to obtain a polypropylene mixture;   (3) preparing a composite solution using the weighed PHMB and zinc salt by the aqueous reaction method, then adding nano-meter fumed silica to obtain a composite antimicrobial agent; of which, using PHMB of different viscosity averaged relative molecular weights as a ligand, and adding zinc salt at a ratio of 5˜6% to synthesize a stable micron-sized Zn-PHMB cationic complex from agglomerated small particles;   (4) mixing the polypropylene mixture obtained in step (2) with bamboo charcoal fiber at 45±5° C. and stirring for 1±0.5 h, then adding the composite antimicrobial agent in step (3), stirring for 20±5 min and then standing for 1.5±0.5 h to obtain antimicrobial fiber solution, and then spinning to obtain antimicrobial nonwoven cloth fiber;   (5) placing the antimicrobial nonwoven cloth fiber in step (4) on a mold for positioning and arrangement, and heat-pressing to form a fiber network structure;   (6) adding anionic polyacrylamide solution as sizing liquid in the sizing machine, immersing the antimicrobial nonwoven cloth fiber web into the slurry with a temperature of 90±5° C. at a speed of 70±5 m/min, and then entering a drying room at a temperature of 135±5° C. for drying;   (7) after the sized and dried antimicrobial nonwoven cloth fiber web undergoes open-width treatment, performing desizing twice, washing out with warm water, and spraying ozone oil onto the web;   (8) drying the desized fiber web qualitatively to prepare an antimicrobial nonwoven cloth product.   
     
     
         3 . The method for preparing antimicrobial nonwoven cloth according to  claim 2 , wherein the steps for preparing the bamboo charcoal fiber are as follows:
 (1) performing cleaning the raw material moso bamboo, and drying it at a temperature of 50±5° C. in a sterile environment, then evenly cutting and placing it in a carbonization furnace;   (2) carrying out carbonization in a carbonization furnace under a pure oxygen high temperature environment by setting the initial firing temperature of the carbonization furnace at 400±50° C. and the initial firing time at 1±0.5 h; setting the calcination temperature of the carbonization furnace at 850±50° C. and the calcination time at 3±0.5 h; using nitrogen with a purity of 98% for barrier during the carbonization process;   (3) obtaining the carbonized bamboo charcoal fiber product.   
     
     
         4 . A mask with antimicrobial nonwoven cloth, comprising a mask body, a mask belt, and a nose strip, the mask body comprises at least one antimicrobial nonwoven cloth layer, and at least one filter cloth layer, and the antimicrobial nonwoven cloth layer is bonded with the filter cloth layer, the filter cloth layer is disposed away from the face, and the antimicrobial nonwoven cloth layer is disposed close to the face; the mask belt is disposed on the side of the mask body and is used to closely fit the mask body to the face; the nose strip is disposed on the upper part of the mask body and is used to closely fit the mask body to the bridge of the nose; the material of the antimicrobial nonwoven cloth layer is the antimicrobial nonwoven cloth of  claim 1 . 
     
     
         5 . The mask according to  claim 4 , wherein the mask belt is disposed on both sides of the mask body through earloop, headband or tie-on. 
     
     
         6 . The mask according to  claim 4 , wherein a protective goggle is further provided on the mask body. 
     
     
         7 . The mask according to  claim 5 , wherein a protective goggle is further provided on the mask body.