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Graphene washable long-acting antiviral fabric and preparation method thereof

A graphene and water-resistant technology, applied in the direction of hydraulic acupuncture, fabric surface trimming, plant fibers, etc., can solve the problems of far lower antibacterial and anti-virus performance, and achieve improved water resistance and service life, and high load durability. degree, the effect of increasing the probability of contact

Active Publication Date: 2021-05-07
广东极客亮技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But studies have shown that graphene oxide has much lower antibacterial and antiviral properties than graphene nanosheets

Method used

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  • Graphene washable long-acting antiviral fabric and preparation method thereof
  • Graphene washable long-acting antiviral fabric and preparation method thereof

Examples

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preparation example Construction

[0028] The invention provides a kind of preparation method of graphene washable long-acting antiviral fabric, comprising the following steps:

[0029] S1. In-situ growth of polyvinylpyrrolidone on the surface of graphene to obtain a graphene / polyvinylpyrrolidone composite.

[0030] In step S1, the preparation method of the graphene / polyvinylpyrrolidone composite includes: adding graphene nanosheets and dispersants with lateral dimensions less than 100nm and thickness less than 10nm to deionized water, ultrasonic dispersion is uniform (graphene content is 1wt%~12wt%); then add N-vinylpyrrolidone monomer and initiator, adjust the pH value of the reaction solution to 9~10, react in a polymerization reactor at 45~60°C for 5~12h, and The polymerized product is centrifuged and dried to obtain the graphene / polyvinylpyrrolidone composite.

[0031]The dispersant is selected from one or more of gelatin, cellulose, and cellulose ether. The initiator is azobisisobutyronitrile or benzoyl...

Embodiment 1

[0044] A kind of preparation method of graphene washable long-acting antiviral fabric, comprises the following steps:

[0045] S1. Add graphene nanosheets and hydroxymethyl cellulose with a lateral dimension of about 50nm and a thickness of about 3nm into deionized water, and ultrasonically disperse them evenly (the content of graphene is 7.5wt%, the content of hydroxymethyl cellulose 1.5%); then add N-vinylpyrrolidone monomer (the mass ratio of N-vinylpyrrolidone monomer and graphene nanosheet is 0.4:1) and azobisisobutyronitrile, the pH value of the reaction solution is adjusted To 9-10, react in a polymerization reactor at 50° C. for 8 hours, centrifuge and dry the polymerization product to obtain a graphene / polyvinylpyrrolidone composite.

[0046] S2. Dissolving the graphene / polyvinylpyrrolidone composite obtained in step S1 in deionized water to obtain a finishing solution with a solid content of 8 wt%.

[0047] S3. soaking the cotton fabric in a sodium hydroxide solutio...

Embodiment 2

[0056] A method for preparing a graphene washable long-acting antiviral fabric, compared with Example 1, the difference is that in step S4, the apertures of the water needles of the first to fifth spunlaces are all 0.12mm. Others are substantially the same as in Embodiment 1, and will not be repeated here.

[0057] After the graphene washable and long-acting antiviral fabric prepared in this example was washed 30 times, the antiviral activity rate was 98.92%, and the fabric breaking strength was 665N. It can be seen that the antiviral activity rate is slightly lower than that of Example 1, and the breaking strength of the fabric is lower than that of untreated cotton fabric. This may be because when the five spunlace jets all use water needles with smaller apertures, the surface of the fabric will repeatedly split into tiny microfibers, which will easily cause fiber breakage and reduce the strength of the fabric. The graphene / polyvinylpyrrolidone composite is also difficult t...

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Abstract

The invention provides a graphene washable long-acting antiviral fabric and a preparation method thereof. The preparation method comprises the steps that firstly, polyvinylpyrrolidone grows on the surface of a graphene nanosheet in situ, then a thinner finishing liquid is prepared, the finishing liquid is sprayed to the surface of the activated fabric through spunlace spraying treatment, and finally, hot rolling and drying are carried out to obtain the graphene washable long-acting antiviral fabric. According to the graphene washable long-acting antiviral fabric and the preparation method thereof, the impact force of spunlace is utilized, so that fine microfibers are split on the surfaces of fabric fibers, and meanwhile, graphene / polyvinylpyrrolidone compounds in fine water flow are adsorbed on the surfaces and the interiors of the fibers; finally, through the hot pressing and the drying, the split microfibers are recovered to the original state of the fabric, and the graphene / polyvinylpyrrolidone compound is coated in the fabric fibers; meanwhile, the polyvinylpyrrolidone growing on the surface of the graphene has good cohesiveness and can be firmly adhered to the fibers together with the graphene, so that the loading capacity and the loading fastness of the graphene are remarkably improved.

Description

technical field [0001] The invention relates to the technical field of post-finishing antiviral fabrics, in particular to a graphene washable and long-acting antiviral fabric and a preparation method thereof. Background technique [0002] Graphene is a hexagonal honeycomb-shaped two-dimensional nanomaterial composed of carbon atoms with sp2 hybrid orbitals, which can be regarded as a single-layer graphite sheet. In recent years, the antibacterial function of graphene and its derivatives has been researched and verified by the industry. Researchers believe that its antibacterial principle lies in the fact that when micron-sized bacteria walk on the sharp nano-scale two-dimensional material of graphene, the cell wall is cut instantly And die. In addition, graphene can also destroy cell membranes and kill bacteria through large-scale direct pumping of phospholipid molecules on cell membranes. At present, the antibacterial properties of graphene have been widely used in underw...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/74D06M15/356D06M11/38D06C29/00D06M101/06
CPCD06M11/74D06M15/3562D06M11/38D06M16/00D06C29/005D06M2101/06
Inventor 曾伟荣曾伟城
Owner 广东极客亮技术有限公司
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