Super-hydrophobic porous chitosan/Ag@AgCl-TiO2 composite material and environmentally-friendly mask
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A technology of porous chitosan and composite materials, which is applied in the fields of clothing, textiles, papermaking, and fiber processing, etc. It can solve the problems of non-reusable use, masks that cannot prevent haze and antibacterial, and waste masks that pollute the environment, so as to prevent the spread of droplets , Easy to clean and replace
Pending Publication Date: 2020-09-11
XIANYANG NORMAL UNIV
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[0003] The purpose of the present invention is to solve the technical problem that the mask in the prior art can not only prevent smog but also be antibacterial, and can not be used repeatedly, and the discarded mask pollutes the environment, and provides a kind of superhydrophobic porous chitosan / Ag@ AgCl-TiO 2 Composite material, and using the composite material as a functional layer, an environmentally friendly mask with anti-haze and antibacterial functions and reusable
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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Embodiment 1
[0027] Such as figure 1 and figure 2 As shown, the environment-friendly mouth mask of the present embodiment includes a surface layer 1, an elastic band 2, a bridge of the nose 3, ear hooks 4, a first layer of lining 5, a functional layer 6, and a second layer of lining 7.
[0028]Surface layer 1 is linen or cotton linen or full cotton cloth or blended cloth, and the first layer lining 5 and the second layer lining 7 are all cotton cloths, and cloth is natural, comfortable to wear, and can be cleaned. Functional layer 6 is placed between the first layer of lining 5 and the second layer of lining 7, and functional layer 6 is an independent disassembly structure layer, which is convenient for cleaning and replacement of functional layer 6. The quantity of functional layers 6 can be set to 1~3 layers (determine the number of functional layers needed according to the weight of smog and epidemic situation), make this mouth mask prevent smog, bacterium, virus from inhaling human b...
Embodiment 2
[0039] The mask structure of this embodiment is the same as that of Embodiment 1, wherein the functional layer 6 is superhydrophobic porous chitosan / Ag@AgCl-TiO with medical gauze as the skeleton 2 Composite material, it is prepared according to the following method:
[0040] 1. Preparation of Ag@AgCl-TiO 2 Complex
[0041] Mix 14mL (39.74mmol) butyl titanate and 36mL 6mol / L hydrochloric acid, stir at room temperature for 3 hours, then stir for 3 hours in a constant temperature water bath at 70°C, age at room temperature for 24 hours, filter, wash with deionized water, and dry. The dried solid was calcined in a muffle furnace at 650°C for 3 hours to obtain TiO 2 . 5g TiO 2 Disperse evenly in 150mL deionized water, and add 50mL 0.1mol / L AgNO 3 aqueous solution, stirred at room temperature for 20 minutes, then added 40mL of 0.1mol·L -1 hydrochloric acid, stirred for 30min, then added 10mL l mol L -1 glucose aqueous solution, continue to stir for 30min, filter, wash with d...
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 discloses a super-hydrophobic porous chitosan/Ag@AgCl-TiO2 composite material and an environmentally-friendly mask. Chitosan serves as a raw material, polyvinyl alcohol serves as a flexible agent, silica gel serves as a pore forming agent, Ag@AgCl-TiO2 serves as functional particles, and the super-hydrophobic porous chitosan/Ag@AgCl-TiO2 composite material which comprises criss-crossmicro-nano pore channels is formed on a sterile medical gauze framework through hydrophobic nano-SiO2 sol after-treatment. The environmentally-friendly mask uses the composite material as an independent assembly and disassembly function layer, and therefore cleaning and replacement are convenient. The composite material can effectively resist the inhalation of fog and haze particles, effectivelyavoid droplet transmission of bacteria, viruses and the like, and has a self-cleaning effect under the condition of illumination of sunlight, ultraviolet light and the like. In addition, the compositematerial has the super-hydrophobicity, and the phenomena that the composite material swells in the exhalant weak-acidity water vapor, the pore channels are blocked, and breathing is affected can be avoided. As a result, the environmentally-friendly mask can be repeatedly used and is suitable for the regions with fog and haze and the novel coronavirus pneumonia epidemic situation medium and low risks.
Description
technical field [0001] The invention belongs to the technical field of daily necessities, and in particular relates to a superhydrophobic porous chitosan / Ag@AgCl-TiO 2 Composite materials, and an environmentally friendly mask with anti-haze and antibacterial functions and reusable. Background technique [0002] Masks are one of the items that are always available in life, especially in places with serious air pollution in cities, masks must be used to prevent smog. In recent years, diseases such as SARS, Middle East Respiratory Syndrome (MERS), and avian influenza have become highly contagious and have relatively high mortality. Especially the novel coronavirus pneumonia that broke out at the end of 2019 has posed a serious threat to the lives and health of people around the world. Droplet transmission is the main transmission route of the new coronavirus. Masks can not only prevent patients from spraying droplets, but also prevent virus-containing droplet nuclei from bein...
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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