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Synthesis process of an active antibacterial biological protective mask and its antibacterial material

A technology of biological protection and antibacterial agent, applied in the directions of biocides, animal repellents, and chemicals for biological control, etc., can solve the problems of secondary pollution and limited adsorption capacity, and avoid secondary pollution, particle Narrow diameter distribution and uniform particle effect

Inactive Publication Date: 2019-03-26
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the activated carbon used in ordinary masks is mainly physical adsorption, the adsorption capacity is limited, and it is easy to cause secondary pollution

Method used

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  • Synthesis process of an active antibacterial biological protective mask and its antibacterial material
  • Synthesis process of an active antibacterial biological protective mask and its antibacterial material
  • Synthesis process of an active antibacterial biological protective mask and its antibacterial material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Synthesis of antibacterial agent raw materials: calcium salt, phosphorus salt, and silver nitrate are synthesized in a solution system through "wet chemical reaction" to synthesize silver ion-doped calcium phosphate particles. The synthesized material is left to stand, aged, and prepared by Repeatedly wash with deionized water for 3 times, filter the sediment and dry it in low-temperature air, the diameter of the silver-doped calcium phosphate particle is 50-200nm, use it as the precursor powder for preparing the bioceramic body, the chemical reaction formula is as follows;

[0035] (10-x)Ca 2+ +xAg + +6PO 4 3- +2OH - → Ca 10-x Ag x (PO 4 ) 6 (OH) 2

[0036] (2) Preparation of antibacterial agent material: uniformly mix 1wt% polyvinyl alcohol into the silver ion-doped calcium phosphate precursor powder, mix 10wt% hydrogen peroxide, and the balance is deionized water to prepare a slurry, and pass through Prepare particles with a particle size of 1500um ~ 20...

Embodiment 2

[0047] The product preparation process and steps are the same as in Example 1, except that the thickness of each functional layer in step (7) is adjusted, and the structural system of the purchased mask is composed of the following percentages in the vertical direction of thickness: the outer (inner) cotton cloth spinning layer accounts for ratio of 20%; the sub-outer active carbon filter layer accounted for 40%, and the three-layer structure of the middle layer active antibacterial agent layer accounted for 40%. This example further expanded the thickness of the active antibacterial function layer, which showed obvious active antibacterial function According to the experimental test, its antibacterial rate against Staphylococcus aureus for 4 hours is ≥98%, and the antibacterial protection effect is good.

Embodiment 3

[0049] The product preparation process and steps are the same as in Example 1, except that the thickness of each functional layer in step (7) is adjusted, and the structural system of the purchased mask is composed of the following percentages in the vertical direction of thickness: the outer (inner) cotton cloth spinning layer accounts for ratio of 20%; the sub-outer activated carbon filter layer accounted for 60%, and the three-layer structure of the middle layer active antibacterial agent layer accounted for 20%. This example further expanded the thickness of the activated carbon filter layer, which showed better particle filtration. Function.

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Abstract

The invention discloses an active antibacterial biological protective mask and a synthetic process of an antibacterial agent material thereof. The biological protective mask has dust filtering and active antibacterial dual functions. The structure of the protective mask is composed of a three-layer structure, namely an outside (inside) all cotton fabric woven layer, a sub-outer activated carbon filtering layer and an intermediate active antibacterial agent layer. The active antibacterial biological protective mask has the characteristics that materials in different functional layers are configured, the sub-outer layer is the activated carbon filtering layer and has a dust filtering function; the intermediate layer is an active antibacterial functional layer, a porous calcium phosphate ceramic antibacterial agent doped with silver ions has the active antibacterial function, and the biological protective mask is endowed with the dust filtering and active antibacterial dual functions. The active antibacterial biological protective mask disclosed by the invention has the characteristics of excellent dust protection effect, uniform antibacterial functional material particles, narrow particle size distribution, broad spectrum antibacterial property, high efficiency, non-toxicity, outstanding anti-tuberculosis effect and the like.

Description

technical field [0001] The invention relates to the field of tuberculosis prevention, in particular to an active antibacterial biological protective mask for tuberculosis prevention. Background technique [0002] In the history of human public health, there have been many outbreaks of large-scale respiratory infectious diseases, such as tuberculosis, SARS, highly pathogenic avian influenza, and H1N1 influenza. Respiratory infectious diseases are transmitted through droplets and air. They have the characteristics of fast transmission, wide susceptible population, and high incidence. They pose a great threat to public health and social stability. Wearing protective masks can block pathogenic microorganisms from invading the human body. Respiratory tract infectious diseases, an effective means to protect public health. According to data from the World Health Organization, China is a country with a high incidence of tuberculosis after India in the world, and the number of drug-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A41D13/11A41D31/30A01N59/16A01P1/00A01P3/00
CPCA01N59/16A41D13/1192A41D31/30A41D31/305
Inventor 赵莉张凤英王晓琴刘元元孙建勋
Owner SICHUAN UNIV
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