A method is provided for removing a volatile organic compound (VOC) contained in an artificial leather fabric and odor caused by the volatile organic compound by coating the artificial leather fabric with an adsorbent which reacts with a noxious substance containing the volatile organic compound (VOC); and immersing; washing; and drying the reacted artificial leather fabric. The method includes coating the adsorbent and immobilizing the volatile organic compound through a reaction, to prevent volatilization of the organic compound or reduce an amount thereof. Further, after the reaction between the artificial leather fabric and the adsorbent, the artificial leather fabric is washed, to remove the volatile organic compound immobilized on a surface of the fabric from the artificial leather.

A method is provided for removing a volatile organic compound (VOC) contained in an artificial leather fabric and odor caused by the volatile organic compound by coating the artificial leather fabric with an adsorbent which reacts with a noxious substance containing the volatile organic compound (VOC); and immersing; washing; and drying the reacted artificial leather fabric. The method includes coating the adsorbent and immobilizing the volatile organic compound through a reaction, to prevent volatilization of the organic compound or reduce an amount thereof. Further, after the reaction between the artificial leather fabric and the adsorbent, the artificial leather fabric is washed, to remove the volatile organic compound immobilized on a surface of the fabric from the artificial leather.

In a method for producing a PBO fiber with increased resistance against UV-caused degradation, a coating is provided on the PBO fibers, wherein the coating comprises graphene oxide cross-linked by polymerization with glutaraldehyde and resorcinol. The fibers are useful for lighter than air vehicles.

A method for preparing a bactericidal film on fiber cloth, comprising cleansing a reel of fiber cloth; placing the reel of fiber cloth into a vacuum chamber; supplying a DC power and a mid-frequency power; introducing argon gas to increase the chamber pressure to 0.3 Pa; position sputtering targets in the following order: silicon target, silicon carbide target, silver target, silicon carbide target, silver target, silicon carbide target and silver target, and then sputtering the targets simultaneously; wherein the silicon targets act as a bonding layer between the bactericidal film and the substrate; stopping the silicon targets, the silicon carbide targets and the silver targets first, and then turning off the argon gas; injecting air into the chamber until the pressure in the chamber and the atmospheric pressure are balanced.

A method for preparing a bactericidal film on fiber cloth, comprising cleansing a reel of fiber cloth; placing the reel of fiber cloth into a vacuum chamber; supplying a DC power and a mid-frequency power; introducing argon gas to increase the chamber pressure to 0.3 Pa; position sputtering targets in the following order: silicon target, silicon carbide target, silver target, silicon carbide target, silver target, silicon carbide target and silver target, and then sputtering the targets simultaneously; wherein the silicon targets act as a bonding layer between the bactericidal film and the substrate; stopping the silicon targets, the silicon carbide targets and the silver targets first, and then turning off the argon gas; injecting air into the chamber until the pressure in the chamber and the atmospheric pressure are balanced.

A reusable protective clothing, including parameters of: (1) anti-permeability water pressure being: hydrostatic pressure of a new protective clothing ≥1100 cm H.sub.2O, and hydrostatic pressure after 100 times of repeated use ≥40 cm H.sub.2O; (2) moisture permeability of a material used ≥2500 g/(m.sup.2.Math.d), moisture permeability after 20 times of repeated use ≥5000 g/(m.sup.2.Math.d), and moisture permeability after 100 times of repeated use ≥8000 g/(m.sup.2.Math.d); (3) synthetic blood penetration resistance ≥grade 2 in table 3 of GB19082-2009; (4) outer surface water spray grade ≥grade 3; (5) breaking strength ≥45 N; (6) elongation at break ≥15%; (7) filtration efficiency for non-oily particles ≥70%; (8) charge amount ≤0.6 μC/piece; (9) static decay time ≤0.5 second; (10) continuous burning time ≤15 seconds, smoldering time ≤10 seconds, damage length less than 20 mm.

A method for producing SiC/SiC composite material according to the present invention includes impregnating a substrate with a slurry containing particles of a flaky lubricant to obtain an impregnated body, drying out a solvent of the slurry from the impregnated body, forming an interface layer on surfaces of the SiC fibers by bending the impregnated body, and transferring the particles of the flaky lubricant to the surfaces of the SiC fibers while stretching the particles, and forming a SiC matrix inside the substrate on which the interface layer is formed. Since a thin interface layer of the flaky lubricant can be formed on the surfaces of the SiC fibers by transferring the flaky lubricant to the surfaces of the SiC fibers, the interface layer reaching inside of the substrate can be easily formed.

A method for preparing a bactericidal film on fiber cloth, comprising cleansing a reel of fiber cloth; placing the reel of fiber cloth into a vacuum chamber; supplying a DC power and a mid-frequency power; introducing argon gas to increase the chamber pressure to 0.3 Pa; position sputtering targets in the following order: silicon target, silicon carbide target, silver target, silicon carbide target, silver target, silicon carbide target and silver target, and then sputtering the targets simultaneously; wherein the silicon targets act as a bonding layer between the bactericidal film and the substrate; stopping the silicon targets, the silicon carbide targets and the silver targets first, and then turning off the argon gas; injecting air into the chamber until the pressure in the chamber and the atmospheric pressure are balanced.

A method for preparing a bactericidal film on fiber cloth, comprising cleansing a reel of fiber cloth; placing the reel of fiber cloth into a vacuum chamber; supplying a DC power and a mid-frequency power; introducing argon gas to increase the chamber pressure to 0.3 Pa; position sputtering targets in the following order: silicon target, silicon carbide target, silver target, silicon carbide target, silver target, silicon carbide target and silver target, and then sputtering the targets simultaneously; wherein the silicon targets act as a bonding layer between the bactericidal film and the substrate; stopping the silicon targets, the silicon carbide targets and the silver targets first, and then turning off the argon gas; injecting air into the chamber until the pressure in the chamber and the atmospheric pressure are balanced.

The present invention relates to an anti-viral nanoformulation suitable for diverse surface application in form of hydrogel based nanoemulsion, or an aerosol spray. The present invention discloses incorporation of nanomaterials such as functionalized carbon quantum dots (F-CQDs), copper nanoparticles (CuNPs) or silver nanoparticles (AgNPs) into the hydrogel (HG) scaffold to act as chemical barrier and anti-viral agent against SARS-CoV-2 or Escherichia coli: phage MS2. The nanoformulation is coated on personal protective equipment's (PPE) and different surfaces such as glass, steel and plastic to control viral infection including corona virus infection.