Graphene-based fabric for protection against pneumonia bacteria and preparation method thereof

A graphene and fabric technology, applied in the direction of rayon manufacturing, textile and paper making, single-component polyester rayon, etc., can solve the problem of unstable deposition uniformity, loss and waste of graphene oxide, load capacity and load uniformity There are still problems to be improved to achieve the effect of improving load fastness, improving antibacterial performance, and high load uniformity

Active Publication Date: 2020-12-04
宁波市雪狼户外服饰有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this method improves antibacterial properties and durability, it is not suitable for fabrics such as polyester that do not contain or contain a small amount of active groups on the surface, and deposition by filtration will cause loss and waste of graphene oxide, and the deposition uniformity is also unstable.
Moreover, the above methods all use graphene and its derivatives to process the formed fabric, and the load capacity and load uniformity need to be improved.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Graphene-based fabric for protection against pneumonia bacteria and preparation method thereof
  • Graphene-based fabric for protection against pneumonia bacteria and preparation method thereof
  • Graphene-based fabric for protection against pneumonia bacteria and preparation method thereof

Examples

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preparation example Construction

[0029] A preparation method of a graphene-based fabric for the protection of pneumonia bacteria, comprising the following steps:

[0030] S1. Preparation of modified graphene: Dissolve graphene oxide in N,N-dimethylformamide, heat up to 80-90°C, and press the mass ratio of diisocyanate to graphene oxide to be 1:(3.5-9 ), add diisocyanate, react for 2-4h; then heat up to 90-100°C, add hydrazine hydrate for reduction reaction for 1-4h, centrifuge and wash to obtain modified graphene.

[0031] The diisocyanate is any one of hexamethylene diisocyanate, toluene diisocyanate or diphenylmethane diisocyanate.

[0032] In step S1, the isocyanate group of diisocyanate undergoes an addition reaction with the hydroxyl groups on the surface of graphene to form urethane groups, and then the graphene oxide is reduced with hydrazine hydrate to obtain diisocyanate-modified graphene. The mass ratio of diisocyanate to graphene oxide is preferably 1:(3.5-9), which not only ensures that the hydro...

Embodiment 1

[0052] A kind of graphene-based fabric for pneumonia bacteria protection is prepared through the following steps:

[0053] S1. Preparation of modified graphene

[0054] Dissolve graphene oxide in N,N-dimethylformamide, heat up to 85°C after ultrasonic dispersion, and add hexamethylene diisocyanate according to the mass ratio of diisocyanate to graphene oxide at 1:5. React for 3 hours; then raise the temperature to 95°C, add hydrazine hydrate to react for 2 hours, and reduce graphene oxide. After the reaction is complete, centrifuge and wash to obtain modified graphene;

[0055] S2. Preparation of modified polyester masterbatch

[0056] (1) Hydroxyl-terminated hyperbranched polyester oligomer: Add trimethylolpropane and dimethylol propionic acid with a molar ratio of 1:6 into the reaction vessel, and raise the temperature to 115°C under nitrogen protection, and react 3h, obtain terminal hydroxyl hyperbranched polyester oligomer;

[0057] (2) Carboxyl-terminated polyester oli...

Embodiment 2

[0066] The graphene-based fabric for the protection of pneumonia bacteria provided by embodiment 2 is prepared through the following steps:

[0067] S1. Preparation of modified graphene

[0068] Dissolve graphene oxide in N,N-dimethylformamide, heat up to 85°C after ultrasonic dispersion, and add hexamethylene diisocyanate according to the mass ratio of diisocyanate to graphene oxide at 1:5. React for 3 hours; then raise the temperature to 95°C, add hydrazine hydrate to react for 2 hours, and reduce graphene oxide. After the reaction is complete, centrifuge and wash to obtain modified graphene;

[0069] S2. Preparation of modified polyester masterbatch

[0070] Preparation of modified polyester masterbatch: the modified graphene obtained in step S1 is added to the molten hydroxy-terminated ethylene terephthalate, and the amount of graphene added is the hydroxy-terminated ethylene terephthalate 0.5wt% of the alcohol ester, stirred and reacted at 280°C for 3h, so that the isoc...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention provides a fabric for the protection of pneumonia germs based on graphene and a preparation method of the fabric. Polyester is modified with graphene obtained by modification of diisocyanate, the fiber in the fabric is obtained by obtained modified polyester melting spinning. The diisocyanate is reacted with hydroxyl radical on the surface of graphene oxide, and then the modified graphene is obtained after reduction; then the modified graphene is reacted with hydroxyl-terminated polyester, isocyanate on the surface of the modified graphene is reacted with terminal hydroxyl groupto enable the graphene and polyester to be chemically bonded to obtain modified polyester masterbatch; and after the modified polyester masterbatch melts spinning, the modified polyester masterbatch is crossed, wound or connected to obtain the modified polyester fabric. In order to increase the graphene loading, the hydroxyl-terminated polyester is preferred to be hydroxyl-terminated hyperbranchedpolyester. The fabric for the protection of the pneumonia germs based on the graphene and the preparation method of the fabric can significantly improve the load fastness of the graphene on the fabric by chemical bonding, and then the protective durability of the fabric against the pneumonia germs is improved.

Description

technical field [0001] The invention belongs to the technical field of textile materials, and relates to a graphene-based fabric for protecting pneumonia bacteria and a preparation method thereof. Background technique [0002] With the gradual improvement of people's living standards, personal hygiene and health issues have been paid more and more attention. As the necessities of human life, fiber textiles have been paid more and more attention to their safety and hygiene functions. Under this social trend, the research on various antibacterial and protective fabrics has developed rapidly in recent years. And since the 21st century, with the successive outbreaks of major viral infectious diseases such as H1N1 influenza, avian influenza, equine influenza, SARS pathogens, and new coronaviruses, these viruses enter the lungs through the upper and lower respiratory tracts and bronchi, and enter through the alveoli. Human blood poses a major threat to human health. Therefore, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F6/92D01F1/10
CPCD01F1/103D01F6/92
Inventor 陈传华
Owner 宁波市雪狼户外服饰有限公司
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