CN107019270B - A kind of synthesis technology of active antibiotic draught biological protective mask and its antibacterial agent material - Google Patents

A kind of synthesis technology of active antibiotic draught biological protective mask and its antibacterial agent material Download PDF

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Publication number
CN107019270B
CN107019270B CN201710434804.6A CN201710434804A CN107019270B CN 107019270 B CN107019270 B CN 107019270B CN 201710434804 A CN201710434804 A CN 201710434804A CN 107019270 B CN107019270 B CN 107019270B
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layer
active
protective mask
mask
antibacterial
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CN107019270A (en
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赵莉
张凤英
王晓琴
刘元元
孙建勋
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Sichuan University
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    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/05—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting only a particular body part
    • A41D13/11—Protective face masks, e.g. for surgical use, or for use in foul atmospheres
    • A41D13/1192—Protective face masks, e.g. for surgical use, or for use in foul atmospheres with antimicrobial agent
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
    • A01N59/16—Heavy metals; Compounds thereof
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/30—Antimicrobial, e.g. antibacterial
    • A41D31/305—Antimicrobial, e.g. antibacterial using layered materials
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D31/00—Materials specially adapted for outerwear
    • A41D31/04—Materials specially adapted for outerwear characterised by special function or use
    • A41D31/30—Antimicrobial, e.g. antibacterial

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Textile Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Plant Pathology (AREA)
  • Inorganic Chemistry (AREA)
  • Dentistry (AREA)
  • Chemical & Material Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Filtering Materials (AREA)

Abstract

The invention discloses a kind of active antibiotic draught biological protective mask and its synthesis technology of antibacterial agent material, the biological protective mask has dust-filtering and active antibacterial dual function.The structure of the protective mask is set up to be made of three-deckers such as outside (inside) all cotton fabric spinning layer, secondary outer layer activated carbon filter layer, middle layer active antibacterial oxidant layer.Its main feature is that by configuring the material in different function layer, including secondary outer layer is active carbon dust filter layer, has dust-filtering function；Middle layer is active antibacterial functions layer, and silver ion doping porous calcium phosphate ceramic antibacterial agent therein has active antibacterial functions, assigns biological protective mask and has both dust-filtering and active antibacterial dual function.The features such as active antibiotic draught biological protective mask of the invention has dust protection effect good, and antibiotic functional material particle is uniform, particle diameter distribution is narrow, broad-spectrum antiseptic, efficient, nontoxic, treating tuberculosis germ effect protrude.

Description

A kind of synthesis technology of active antibiotic draught biological protective mask and its antibacterial agent material
Technical field
The present invention relates to tuberculosis prophylaxis field, specifically a kind of active antibiotic draught biological protection for tuberculosis prophylaxis Mask.
Background technique
Once extensive respiratory infectious disease epidemic situation, such as tuberculosis, SARS, height had been broken out repeatedly in mankind's public health history Pathogenic avian influenza, Influenza A H1N1 etc..Respiratory infectious disease has spread speed fast, easy by droplet and air borne The feature that touching group is wide, disease incidence is high causes very big threat to public health and social stability, and wearing protective mask can block Pathogenic microorganism invades human body, is preventing respiratory infectious disease, the effective means for protecting health of masses.The number of the World Health Organization According to display, China is the high-incidence country of tuberculosis for being only second to India in the world, and tulase drug resistance case load then occupies first place in the world. Tuberculosis patient, family members, medical staff are chronically among the droplet and air environment for carrying tuberculosis germ, have high-risk cause a disease Risk.The tuberculosis prevention and treatment measure that China implements at present is " the Stop TB strategy " based on " DOTS " strategy, core Heart spirit is to prevent trouble before it happens.Therefore for tuberculosis patient and its surrounding exposed population group, by wearing biological protective mask Tuberculosis pathogeny can be effectively blocked to propagate, it is ensured that public public health security.
Biological protective mask, which refers to, provides the mask of protection to personnel's respiratory tract under biological pollution environment, can by its function It is divided into passive-type biological protective mask and active antibiotic draught biological protective mask.Passive-type biological protective mask is generally to make at present A kind of protective mask mainly filters out the physical particles object in air or harmful pathogen in a manner of physical filtering.It is actively anti- Bacterial type biological protective mask refers to adds certain antimicrobial component in mask material, assigns mask active antibacterial functions.Biology is anti- Retaining cover can reach 95%-99% to the filter efficiency of particulate matter, it could be theoretically argued that it can provide people effective protection, But be adsorbed on passive-type biological protective mask have communicable pathogen may spread again, to environment and it is artificial at Secondary pollution.In order to prevent to be attached to superinfection caused by the pathogenic microorganism on mask is spread again, has and actively sterilize The mask material of function and its application are increasingly taken seriously, and actively sterilize it assures that mask plays while filtering pathogen Function.
It is able to suppress or kills the protective mask of pathogenic microorganism, the emphasis and core developed are the filter of mask Core material and antibacterial agent add the simple effective method that antibacterial agent is to confer to mask antibacterial functions, due to most on filter material Number chemistry antibacterial agent exists to the toxic side effect of human and environment, thus a new generation have the masks of active antibacterial functions still up for Further development, to meet the multi-functional characteristic requirements of biological protection and the purpose of reliable safety.
In the exploitation of protective mask material for core, activated carbon application is relatively broad.The main component of active carbon is carbon, it is A kind of porous solid carbonaceous of black, specific surface area is in 500~1700m2/ g has very strong absorption property.Use active carbon Isolation filtering material is served as, the trace toxic gas in air can be effectively adsorbed, while removal such as Escherichia coli, yellow Portugal is isolated The droplet transmission bacterium such as grape coccus, pyogenic baeceria, tulase inhibits infectious respiratory disease caused by viral source to propagate.But Usually active carbon used in general mask is based on physical absorption, limited sorption capacity, and be easy to cause secondary pollution.
Summary of the invention
For drawbacks described above existing for above-mentioned background technique, the present invention is intended to provide one kind has dust-filtering and actively resists The active antibiotic draught biological protective mask for tuberculosis prophylaxis of bacterium dual function.
For this purpose, the invention adopts the following technical scheme: a kind of active antibiotic draught biological protective mask, including mask cover, The two sides of mask cover are equipped with for being affiliated to the adjustable straps in ear, characterized in that the mask cover includes by outer And outer layer pure cotton non-woven fabrics layer, secondary outer filter layers, middle layer active antibacterial oxidant layer and the internal layer pure cotton non-woven fabrics layer of interior laying Forming.Mask outermost layer is that all cotton fabric spins layer, and soft comfortable is contacted with human body mouth and nose；Secondary outer layer is active carbon dust filter layer, With dust-filtering function；Middle layer is active antibacterial functions layer, and silver ion therein adulterates porous calcium phosphate ceramic antibacterial agent Material has active antibacterial functions.
As supplement to above-mentioned technical proposal and perfect, the invention also includes following technical characteristics.
The outer layer pure cotton non-woven fabrics layer and internal layer pure cotton non-woven fabrics layer is integrated fold forming, the secondary outer layer mistake Filtering layer, middle layer active antibacterial oxidant layer are arranged between outer layer pure cotton non-woven fabrics layer and internal layer pure cotton non-woven fabrics layer.
The inside of the internal layer pure cotton non-woven fabrics layer is equipped with to be sealed for adjusting the flexible nose that mask and face coincide Band ensure that the tightness that mask and face coincide.
The secondary outer filter layers are activated carbon filter layer, and activated carbon filter layer material is micro activated carbon particle, active carbon Diameter of particle is 50um~300um, and activated carbon raw material iodine number is 900~1000mg/g, has dust-filtering function, active carbon tool There is good dust-filtering function, using high-efficiency catalytic activity charcoal, detergent power is greatly improved, and can be effectively isolated removal tuberculosis The propagation of bacterium inhibits tuberculosis caused by viral source to infect.
The middle layer active antibacterial oxidant layer is that porous calcium phosphate ceramic antibacterial agent material is adulterated with silver ion, porous The calcium phosphate polycrystal that calcium phosphate ceramic particles have irregular pattern, diameter is 500um~2000um, silver ion therein are mixed Impurity level percentage is 1~3% with active sterilizing function, it can be ensured that mask plays while filtering germ actively sterilizes Function, avoid the secondary pollution problem of protective mask.
The retaining covers on thickness vertical direction percentage part are as follows:
Outer layer pure cotton non-woven fabrics layer and internal layer pure cotton non-woven fabrics layer 1%~20%,
Secondary outer filter layers 10%~60%,
Middle layer active antibacterial oxidant layer 89%~20%.
The synthesis of the antibacterial agent material includes following process:
Step 1, Material synthesis: calcium salt, microcosmic salt, silver nitrate synthesize silver ion by wet processing and mix under solution system Miscellaneous calcium phosphate particles, the material after synthesis are stood, are aged, and are filtered through sediment after being cleaned repeatedly by deionized water low Temperature air-dries, and mixing silver-colored calcium phosphate particles diameter is 50~200nm, as the forerunner's powder for preparing bioceramic idiosome, changes It is as follows to learn reaction formula；
(10-x)Ca2++xAg++6PO4 3-+2OH-→Ca10-xAgx(PO4)6(OH)2
Step 2, prepared by antibacterial agent material: uniformly being mixed with the polyvinyl alcohol of 1~3wt% to silver ion doping phosphoric acid calcium It drives among powder, mixes the hydrogen peroxide of 5~30wt%, surplus is that deionized water is modulated into slurry, and is prepared by roller screen method Partial size is the particle of 500um~2000um, 100 DEG C of low temperature < drying；
Step 3, porous antibacterial agent material sintering: roller screen particle is put into Muffle furnace by preparation to be calcined, from room temperature with 5 DEG C/ The rate of min is warming up to 1100 DEG C and continues to be sintered for 2 hours, and then furnace cooling is then dispersed into porous antibacterial agent material；Silver Ion doping porous calcium phosphate ceramic antibacterial agent material pore structure requirement: whole porosity 65%~80%, macropore diameter 500 ± 50 μm, interpenetrating perforation micropore size be 80 ± 20 μm, mutually three-dimensional perforation, hole inner wall are covered with capillary micropore, mix between micropore Miscellaneous silver ion is uniformly distributed among ceramic matrix material.
Calcium salt in step 1 are as follows: CaCl2Or Ca (NO3)2·4H2Or (CH O,3COO)2Ca·H2Any one of O；Phosphorus Salt are as follows: (NH4)2HPO4、(NH4)H2PO4、K2HPO4Or NaH2PO4Any one of, silver salt AgNO3。
It can achieve following using the present invention the utility model has the advantages that the present invention has dust-filtering and active antibacterial dual function, Mask time outer layer active carbon has good filter effect, removal rate 95%-98%, and other indexs reach GB2626- Requirement in 2006 self-suction dust filter mask general technical specifications.Middle layer silver ion adulterates porous calcium phosphate ceramic antibacterial Agent material has active antibacterial functions, and through experiment test, it is acted on pulmonary tuberculosis germ and staphylococcus aureus 1 hour and 4 small When bacteriostasis rate >=98%, antibacterial and protective effect is good.Active antibiotic draught biological protective mask of the invention has dust protection effect Fruit is good, and antibiotic functional material particle is uniform, particle diameter distribution is narrow, broad-spectrum antiseptic, efficient, nontoxic, treating tuberculosis germ effect protrude etc. Feature.Biological protective mask light weight of the present invention, good permeability；Without sense of feeling oppressed after wearing.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is antibacterial mechanisms figure of the invention.
Fig. 3 is that silver ion of the invention adulterates porous calcium phosphate antibacterial agent material object phase constituent identification EDX figure.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other Embodiment shall fall within the protection scope of the present invention.
As shown in FIG. 1 to FIG. 2, the present invention includes mask cover, and the two sides of mask cover are equipped with for being affiliated in ear Adjustable straps 1, mask cover include outer layer pure cotton non-woven fabrics layer 2, the secondary outer filter layers 3, middle layer being laid with from outside to inside Active antibacterial oxidant layer 4 and internal layer pure cotton non-woven fabrics layer 5 shape.Mask outermost layer is that all cotton fabric spins layer, soft comfortable, with human body mouth Nose contact；Secondary outer layer is active carbon dust filter layer, has dust-filtering function；Middle layer is active antibacterial functions layer, wherein Silver ion doping porous calcium phosphate ceramic antibacterial agent material have active antibacterial functions.
Further, outer layer pure cotton non-woven fabrics layer 2 and internal layer pure cotton non-woven fabrics layer 5 are integrated fold forming, secondary outer layer mistake Filtering layer 3, middle layer active antibacterial oxidant layer 4 are arranged between outer layer pure cotton non-woven fabrics layer 2 and internal layer pure cotton non-woven fabrics layer 5.
Further, the inside of internal layer pure cotton non-woven fabrics layer 5 is equipped with the flexible nose coincideing for adjusting mask and face Band 6 ensure that the tightness that mask and face coincide.
Further, secondary outer filter layers 3 are activated carbon filter layer, and activated carbon filter layer material is micro activated carbon particle, living Property carbon particle partial size be 50um~300um, activated carbon raw material iodine number be 900~1000mg/g, have dust-filtering function, activity Charcoal has good dust-filtering function, and using high-efficiency catalytic activity charcoal, detergent power is greatly improved, and can be effectively isolated removal The propagation of tulase inhibits tuberculosis caused by viral source to infect.
Further, middle layer active antibacterial oxidant layer 4 is to adulterate porous calcium phosphate ceramic antibacterial agent material with silver ion, Porous calcium phosphate ceramic particle have irregular pattern, diameter be 500um~2000um calcium phosphate polycrystal, it is therein silver from Son doping mass percent is 1~3% with active sterilizing function, it can be ensured that mask plays actively while filtering germ The function of sterilization avoids the secondary pollution problem of protective mask.
Embodiment 1:
(1) antibacterial agent Material synthesis: calcium salt, microcosmic salt, silver nitrate are synthesized under solution system by " wet chemistry reaction " Silver ion doping phosphoric acid calcium particle, the material after synthesis is stood, is aged, and is cleaned repeatedly by deionized water 3 times, by sediment It is filtered through low-temperature air-drying, mixing silver-colored calcium phosphate particles diameter is 50~200nm, as the forerunner for preparing bioceramic idiosome Powder, chemical reaction formula are as follows；
(10-x)Ca2++xAg++6PO4 3-+2OH-→Ca10-xAgx(PO4)6(OH)2
(2) prepared by antibacterial agent material: uniformly being mixed with the polyvinyl alcohol of 1wt% to silver ion doping phosphoric acid calcium forerunner's powder Among, the hydrogen peroxide of 10wt% is mixed, surplus is that deionized water is modulated into slurry, and prepares by roller screen method into partial size and be The particle of 1500um~2000um, 100 DEG C of low temperature < drying；
(3) porous antibacterial agent material sintering: roller screen particle is put into Muffle furnace by preparation to be calcined, from room temperature with 5 DEG C/min Rate be warming up to 1100 DEG C and continue to be sintered for 2 hours, then furnace cooling is then dispersed into porous antibacterial agent material.It obtains Silver ion adulterate porous calcium phosphate ceramic antibacterial agent material pore structure: whole porosity 70%, 450 ± 50 μm of macropore diameter, It is 60 ± 20 μm that interpenetrating, which penetrates through micropore size, and three-dimensional perforation, hole inner wall are covered with capillary micropore, silver-doped uniform ion between micropore It is distributed in ceramic matrix material；
(4) it using step (3) silver ion doping porous calcium phosphate ceramic obtained as antibacterial agent material, is encapsulated and sets In mask middle layer as active antibacterial functions layer, this layer of active antibacterial agent thickness accounts for mask longitudal section with a thickness of 25%, silver from Son concentration in antibacterial agent is 2.0wt%.
(5) the preset filtering function material using micro activated carbon particle as protective mask is encapsulated and is placed in mask time outer layer As particle dust filter layer, micro activated carbon particle partial size is 200um~300um, and activated carbon raw material iodine number is 900mg/g, tool There is dust-filtering function.
(6) mask outermost layer is purchased with all cotton non-woven fabric and innermost layer all cotton fabric spins layer, dust filtering layer and active is isolated Antibacterial functions layer, and its inside is directly contacted with human body mouth and nose, keeps air-flow unobstructed.
(7) protective mask is purchased with step (1)~(6) material obtained, the structural system of the mask is (interior by outside Side) all cotton fabric spins layer, secondary outer layer activated carbon filter layer, the three-deckers such as middle layer active antibacterial oxidant layer and constitutes, and it is vertical in thickness Direction percentage composition part are as follows:
Outside (inside) pure cotton non-woven fabrics layer 20%,
Secondary outer layer activated carbon filter layer 50%,
Middle layer active antibacterial oxidant layer 30%.
Biological protective mask prepared by the present embodiment have micro particle filtering and active antibacterial double effects, middle layer silver from Son doping porous calcium phosphate ceramic antibacterial agent material has active antibacterial functions, and outer layer active carbon is imitated with good filtering Fruit.
Embodiment 2:
Product preparation process and step are same as Example 1, the difference is that each function thickness in set-up procedure (7) Degree, purchases the structural system of mask in thickness vertical direction percentage composition part are as follows: outside (inside) all cotton fabric spins layer accounting 20%；The three-deckers structure accountings 40% such as secondary outer layer activated carbon filter layer accounting 40%, middle layer active antibacterial oxidant layer, this example into One step expands active antibacterial functions thickness, shows apparent active antibacterial functions, tests it to golden yellow Portugal through experiment Grape coccus acts on 4 hours bacteriostasis rate >=98%, and antibacterial and protective effect is good.
Embodiment 3:
Product preparation process and step are same as Example 1, the difference is that each function thickness in set-up procedure (7) Degree, purchases the structural system of mask in thickness vertical direction percentage composition part are as follows: outside (inside) all cotton fabric spins layer accounting 20%；The three-deckers structure accountings 20% such as secondary outer layer activated carbon filter layer accounting 60%, middle layer active antibacterial oxidant layer, this example into One step expands active carbon filtering function thickness, shows better micro particle filtering function.
Embodiment 4:
Product preparation process and step are same as Example 1, the difference is that each function thickness in set-up procedure (7) Degree, purchases the structural system of mask in thickness vertical direction percentage composition part are as follows: outside (inside) all cotton fabric spins layer accounting 10%；The three-deckers structure accountings 35% such as secondary outer layer activated carbon filter layer accounting 55%, middle layer active antibacterial oxidant layer, this example into The one successive step function thickness of protective mask can be realized flexibly each to mask by changing each functional layer thickness accounting The adjustment of functional performance demand.
Embodiment 5:
Product preparation process and step are same as Example 1, the difference is that the antibacterial agent material in set-up procedure (4) In silver ion be 3.0wt%, by adjusting improve antibacterial agent material antimicrobial efficiency, can effectively promote the master of protective mask Dynamic antibacterial effect, realizes the adjustment to each functional performance demand of mask.
Embodiment 6:
Product preparation process and step are same as Example 1, the difference is that the active carbon in set-up procedure (5) filters Layer material, selection micro activated carbon particle partial size are 100um~200um, and activated carbon raw material iodine number is 1000mg/g, by adjusting raising Mask dust-filtering function, can effectively promote the micro particle filtering effect of protective mask, and realization can need mask filtration functional The adjustment asked.
Embodiment 7:
Product preparation process and step are same as Example 1, the difference is that the antibacterial agent material in screening step (2) Partial size, by roller screen method preparation at partial size be 1000um~1500um silver ion doping phosphoric acid calcium ceramic particle, pass through tune The whole filter effect for improving mask antibacterial functions layer material can effectively promote the micro particle filtering effect of protective mask, realization pair The adjustment of mask filtering function performance demand.
Embodiment 8:
Product preparation process and step are same as Example 1, the difference is that the antibacterial agent material in screening step (3) Microcellular structure, select have smaller microcellular structure silver ion adulterate porous calcium phosphate ceramic, whole porosity 80%, macropore 350 ± 50 μm of aperture, interpenetrating perforation micropore size are 40 ± 10 μm, and three-dimensional perforation, anti-by adjusting mask is improved between micropore The microcellular structure of bacterium functional layer material improves filter effect, can effectively promote the micro particle filtering effect of protective mask, realization pair The adjustment of mask filtering function performance demand.
Application example 1:
It is worn with the biological protective mask obtained of embodiment 8 and is used as dust, particle protection, active carbon filtering function layer Can have effects that preferably to prevent PM2.5 from polluting with effective protection particle diameter >=2.5um dust and particle.
Application example 2:
It is worn with the biological protective mask obtained of embodiment 5 supply tuberculosis patient, is used as tuberculosis germ active defense, Its antibacterial functions layer can be effectively isolated the propagation of removal tulase, inhibit tuberculosis caused by viral source to infect, prevent from tying Core germina infection is to surrounding population.
Application example 3:
With the biological protective mask obtained of embodiment 5, supply tuberculosis patient medical staff is worn, and is used as tuberculosis germ Actively prevent, antibacterial functions layer can be effectively isolated the propagation of removal tulase, have active sterilizing function, can inhibit disease Tuberculosis caused by malicious source infects, and prevents tuberculosis germ passive infection.
Application example 4:
Tuberculosis patient family members are supplied with the biological protective mask obtained of embodiment 5 or are worn often in contact with personnel, are used To make tuberculosis germ actively to prevent, antibacterial functions layer can be effectively isolated the propagation of removal tulase, there is active sterilizing function, Tuberculosis caused by viral source can be inhibited to infect, prevent tuberculosis germ passive infection.
The structural characterization of the embodiment of the present invention and performance test:
1, the partial size of synthesis silver ion doping porous calcium phosphate anti-biotic material (in step 1) is tested through TEM.
The result shows that: mixing silver-colored calcium phosphate particles diameter is 50~200nm.
2, the microstructure for sintering porcelain silver ion doping porous calcium phosphate anti-biotic material (in step 3) into is tested through SEM.
The result shows that: it includes abundant pore structure that silver ion, which adulterates porous calcium phosphate ceramic antibacterial agent material internal, each micro- Mutually three-dimensional perforation, hole inner wall are covered with capillary micropore between hole.
3, antibacterial agent material object phase constituent is identified by EDX and is characterized.
As shown in Figure 3, the results showed that for 1%~3% silver ion Uniform Doped among antibacterial agent material, base material is more The pore structure of hole calcium phosphate ceramic, it is ensured that material internal doping silver ion and germ come into full contact with, and play antibacterial action.
4, the pore structure of calcium phosphate ceramic material is tested by mercury injection apparatus and is characterized.
The result shows that: the pore structure of material is to be mutually communicated porous structure, test ceramic overall porosity be 65%~ 80%.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its Equivalent thereof.

Claims (7)

1. the two sides of a kind of active antibiotic draught biological protective mask, including mask cover, mask cover are equipped with for being affiliated in ear The adjustable straps (1) in portion, it is characterised in that: the mask cover includes the outer layer pure cotton non-woven fabrics layer being laid with from outside to inside (2), secondary outer filter layers (3), middle layer active antibacterial oxidant layer (4) and internal layer pure cotton non-woven fabrics layer (5), middle layer are actively anti- Bacterium functional layer, silver ion doping porous calcium phosphate ceramic antibacterial agent material therein have active antibacterial functions；
The synthesis of the antibacterial agent material includes following process:
Step 1, Material synthesis: calcium salt, microcosmic salt, silver nitrate synthesize silver ion by wet processing and adulterate phosphorus under solution system Sour calcium particle, the material after synthesis are stood, are aged, and sediment is filtered through low temperature wind after being cleaned repeatedly by deionized water Dry, mixing silver-colored calcium phosphate particles diameter is 50~200nm, and as the forerunner's powder for preparing bioceramic idiosome, chemistry is anti- Answer formula as follows；
(10-x)Ca2++xAg++6PO4 3-+2OH-→Ca10-xAgx(PO4)6(OH)2
Step 2, prepared by antibacterial agent material: uniformly being mixed with the polyvinyl alcohol of 1~3wt% to silver ion doping phosphoric acid calcium front axle shell Among material, the hydrogen peroxide of 5~30wt% is mixed, surplus is that deionized water is modulated into slurry, and prepares by roller screen method into partial size For the particle of 500um~2000um, 100 DEG C of low temperature < drying；
Step 3, porous antibacterial agent material sintering: roller screen particle is put into Muffle furnace and is calcined, from room temperature with the rate of 5 DEG C/min It is warming up to 1100 DEG C to continue to be sintered for 2 hours, then furnace cooling is then dispersed into porous antibacterial agent material；Silver ion doping Porous calcium phosphate ceramic antibacterial agent material pore structure requirement: whole porosity 65%~80%, 500 ± 50 μm of macropore diameter, It is 80 ± 20 μm that interpenetrating, which penetrates through micropore size, and mutually three-dimensional perforation, hole inner wall are covered with capillary micropore, adulterate silver ion between micropore It is uniformly distributed among ceramic matrix material.
2. a kind of active antibiotic draught biological protective mask according to claim 1, it is characterised in that: the outer layer pure cotton Nonwoven layer (2) and internal layer pure cotton non-woven fabrics layer (5) are integrated fold forming, the secondary outer filter layers (3), middle layer master Dynamic antibacterial oxidant layer (4) are arranged between outer layer pure cotton non-woven fabrics layer (2) and internal layer pure cotton non-woven fabrics layer (5).
3. a kind of active antibiotic draught biological protective mask according to claim 2, it is characterised in that: the internal layer pure cotton The inside of nonwoven layer (5) is equipped with the flexible nose band (6) coincideing for adjusting mask and face, ensure that mask and face The identical tightness in portion.
4. a kind of active antibiotic draught biological protective mask according to claim 3, it is characterised in that: the secondary outer layer mistake Filtering layer (3) be activated carbon filter layer, activated carbon filter layer material be micro activated carbon particle, micro activated carbon particle partial size be 50um~ 300um, activated carbon raw material iodine number are 900~1000mg/g, have dust-filtering function, and active carbon has good dust-filtering Function, using high-efficiency catalytic activity charcoal, detergent power is greatly improved, and can be effectively isolated the propagation of removal tulase, inhibits disease Tuberculosis caused by malicious source infects.
5. a kind of active antibiotic draught biological protective mask according to claim 4, it is characterised in that: the middle layer master Dynamic antibacterial oxidant layer (4) are to adulterate porous calcium phosphate ceramic antibacterial agent material with silver ion, and porous calcium phosphate ceramic particle has Irregular pattern, the calcium phosphate polycrystal that diameter is 500um~2000um, silver ion doping mass percent therein is 1~ 3% has active sterilizing function, it can be ensured that mask plays the function of actively sterilization while filtering germ, avoids protection The secondary pollution problem of mask.
6. a kind of active antibiotic draught biological protective mask according to claim 5, it is characterised in that: the mask cover In thickness vertical direction percentage part are as follows:
Outer layer pure cotton non-woven fabrics layer and internal layer pure cotton non-woven fabrics layer 1%~20%,
Secondary outer filter layers 10%~60%,
Middle layer active antibacterial oxidant layer 89%~20%.
7. a kind of active antibiotic draught biological protective mask according to claim 1, it is characterised in that:
Calcium salt in step 1 are as follows: CaCl2Or Ca (NO3)2·4H2Or (CH O,3COO)2Ca·H2Any one of O；Microcosmic salt are as follows: (NH4)2HPO4、(NH4)H2PO4、K2HPO4Or NaH2PO4Any one of, silver salt AgNO3。
CN201710434804.6A 2017-06-10 2017-06-10 A kind of synthesis technology of active antibiotic draught biological protective mask and its antibacterial agent material Expired - Fee Related CN107019270B (en)

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