CN107373822B - A kind of protective mask - Google Patents
A kind of protective mask Download PDFInfo
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- CN107373822B CN107373822B CN201710805893.0A CN201710805893A CN107373822B CN 107373822 B CN107373822 B CN 107373822B CN 201710805893 A CN201710805893 A CN 201710805893A CN 107373822 B CN107373822 B CN 107373822B
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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
Abstract
The invention discloses a kind of protective masks, it includes mask body, the mask body, the mask body ontology includes outer layer middle layer and internal layer, the centre of outer layer has support frame, the support frame two sides have upper ventilative seam and lower ventilative seam, and the upper ventilative seam and lower ventilative seam also have air vent, and the two sides of the mask body have fixing belt.Mask of the invention has good protective action, and mask body has upper ventilative seam and lower ventilative seam, and the upper ventilative seam and lower ventilative seam also have air vent, and scavenging performance is good, and has cleaned filtering layer, can effectively reduce the entrance of toxic gas.
Description
Technical field
The present invention relates to a kind of protective masks.
Background technique
In the environment of industrial production or special operation, air quality is often relatively more severe, and toxic and harmful gas is more, no
Conducive to personal production operation, a kind of mask that protective performance is good is needed.
Summary of the invention
In view of the above problems, the present invention provides a kind of protective mask, has good protective action.
To achieve the goals above, present invention provide the technical scheme that a kind of protective mask, it includes mask body,
The mask body, the mask body ontology include outer layer middle layer and internal layer, and the centre of outer layer has support frame, institute
The support frame two sides stated have upper ventilative seam and lower ventilative seam, and the upper ventilative seam and lower ventilative seam also have air vent,
The two sides of the mask body have fixing belt.
The two sides of the mask body respectively have there are two fixing belt, are symmetrical arranged up and down.
The mask body includes outer layer middle layer and internal layer, and the outer layer is barrier layer,
Middle layer is cleaned filtering layer, and internal layer is contact layer.
The cleaned filtering layer uses nano material for air purification.
The contact layer of the internal layer uses nonwoven cloth material.
Mask of the invention has good protective action, and mask body has upper ventilative seam and lower ventilative seam, described
Upper ventilative seam and lower ventilative seam also have air vent, and scavenging performance is good, and has cleaned filtering layer, can effectively reduce toxic
The entrance of gas, cleaned filtering layer is using the bis- modification single-walled carbon nanotube formaldehyde composite catalyzing purifications of Ni/Fe-PDDA/PSS
Grain, clean-up effect are very significant.
Detailed description of the invention
Fig. 1 is mask schematic diagram provided in an embodiment of the present invention；
In figure: 1, mask body, 2, support frame, 3, upper ventilative seam, 4, lower ventilative seam, 5, air vent, 6, first is fixed
Band, the 7, second fixing belt, 8, third fixing belt, the 9, the 4th fixing belt.
Fig. 2 is mask body structure chart；
In figure: 1.1, upper layer, 1.2, middle layer, 1.3, lower layer.
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.
Fig. 1 and 2 is please referred to, a kind of protective mask, it includes mask body 1, the mask body 1, the mask
Ontology ontology includes outer layer 1.1, middle layer 1.2 and internal layer 1.3, and the centre of outer layer has support frame 2, the support frame two
Side has upper ventilative seam 3 and lower ventilative seam 4, and the upper ventilative seam and lower ventilative seam also have air vent 5, the mask sheet
The two sides of body have fixing belt.
The two sides of the mask body respectively have there are two fixing belt, respectively, the first fixing belt 6, the second fixing belt 7,
Third fixing belt 8, the 4th fixing belt 9, is symmetrical arranged up and down.
The mask body includes outer layer middle layer and internal layer, and the outer layer is barrier layer,
Middle layer is cleaned filtering layer, and internal layer is contact layer.
The cleaned filtering layer uses nano material for air purification.
The contact layer of the internal layer uses nonwoven cloth material.
Mask of the invention has good protective action, and mask body has upper ventilative seam and lower ventilative seam, described
Upper ventilative seam and lower ventilative seam also have air vent, and scavenging performance is good, and has cleaned filtering layer, can effectively reduce toxic
The entrance of gas, cleaned filtering layer is using the bis- modification single-walled carbon nanotube formaldehyde composite catalyzing purifications of Ni/Fe-PDDA/PSS
Grain, clean-up effect are very significant.It purifies particle by using monodispersed single-walled carbon nanotube Controllable assembly at orderly
The single-walled carbon nanotube microballoon of hollow ball-shape, and using this microballoon as the carbon-based supports of catalyst, this special assembling knot
Structure realizes the evenly dispersed and abundant exposure of active site, accelerates the dynamic process of oxidation of formaldehyde catalysis reaction.
After carrying out sour processing using rare earth nitrades and sodium tungstate, then it is co-precipitated with Ni(NO3) 2 and Fe(NO3) 3, improves air
In formaldehyde catalytic conversion, can eliminate in air dissociate formaldehyde.
It is specific the preparation method is as follows:
Embodiment 1
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 1:4
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L)；
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10) 2(0.02mol), Fe(NO3) 3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 2
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 1:2
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L),
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 3
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 1:1
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L),
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 4
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 1:1
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L),
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 5
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 2:1
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L),
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 6
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 3:1
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L),
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 7
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 7:1
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L),
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 8
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid were added to by step 1 together with the proportion of 1:7
In the concentrated sulfuric acid solution of amount, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L),
Nitrate and sodium tungstate are cleaned under ultrasonic oscillation, are then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 9
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid are added to by step 1 together with the proportion of 10:1
In excessive concentrated sulfuric acid solution, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L), by nitrate and sodium tungstate in ultrasound
The lower removal of impurities of wave concussion, is then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Embodiment 10
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid are added to by step 1 together with the proportion of 1:10
In excessive concentrated sulfuric acid solution, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
Step 2 by it is above-mentioned reacted mixed liquor is diluted with deionized water after, excessive hydrogen peroxide solution stirring is added
20min；
Step 3 is obtained after the above-mentioned washing by reacted mixed liquor using filtering with microporous membrane and dilute hydrochloric acid solution
To solid to be washed again by high speed centrifugation to supernatant liquor with deionized water be neutral (PH=7)；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer it is uniform,
Stable solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added poly- two by step 5
Allyl dimethyl base ammonium ammonium chloride (PDDA) and each 50g electromagnetic agitation 10min of kayexalate (PSS), obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and it is heavy to stand
Drop, removes its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates
48h, temperature 50 C, rare earth nitrades and sodium tungstate molar ratio are 3:1(0.5mol/L), by nitrate and sodium tungstate in ultrasound
The lower removal of impurities of wave concussion, is then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
Ni(NO3 is added in above-mentioned products therefrom by step 10)2(0.02mol), Fe(NO3)3(0.04mol) and NaCl
(0.30mol) is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drop
Extra ion is removed to neutral wash with distilled water after to room temperature, 100 DEG C of dry 12h obtain final formaldehyde purifying agent.
Reference examples 1
It is with 1 difference of embodiment: in step 2, hydrogen peroxide is removed, excessive sodium hydroxide solution stirring is added,
Remaining step is identical with embodiment 1.
Reference examples 2
It is with 1 difference of embodiment: in step 5, does not add into diallyl dimethyl ammonium ammonium chloride (PDDA),
But kayexalate (PSS) 100g, remaining step are identical with embodiment 1.
Reference examples 3
It is with 1 difference of embodiment: in step 5, does not add kayexalate (PSS), but is added poly- two
Allyl dimethyl base ammonium ammonium chloride (PDDA) 100g, remaining step are identical with embodiment 1.
Reference examples 4
It is with 1 difference of embodiment: in step 7, using CO2As annealing medium, head product is obtained, remaining step
It is identical with embodiment 1.
Reference examples 5
It is with 1 difference of embodiment: in step 7, is used as and is moved back using argon gas and carbon dioxide mix gas (volume ratio 3:5)
Fiery medium, obtains head product, remaining step is identical with embodiment 1.
Reference examples 6
It is with 1 difference of embodiment: in step 8, does not add the mixed solution of rare earth nitrades and sodium tungstate, but
The sodium chloride solution 500ml of 0.5mol/L is added, remaining step is identical with embodiment 1.
Reference examples 7
It is with 1 difference of embodiment: in step 8, the mixed solution of rare earth nitrades and sodium tungstate, rare earth nitric acid is added
Salt and sodium tungstate molar ratio are 5:1(0.5mol/L), remaining step is identical with embodiment 1.
Reference examples 8
It is with 1 difference of embodiment: in step 7, the mixed solution of rare earth nitrades and sodium tungstate, rare earth nitric acid is added
Salt and sodium tungstate molar ratio are 1:2(0.5mol/L), remaining step is identical with embodiment 1.
Reference examples 9
It is with 1 difference of embodiment: in step 10, Ni(NO3 is added)2(0.06mol), does not add Fe(NO3)3,
Remaining step is identical with embodiment 1.
Reference examples 10
It is with 1 difference of embodiment: in step 10, Fe(NO is added3)3(0.06mol), does not add Ni(NO3)3,
Remaining step is identical with embodiment 1.
Choose the test that the air purifying preparation being prepared carries out correlated performance respectively, at room temperature, mixture of feed body group
At 1% formaldehyde, 5% oxygen, 2.5% vapor, 96% nitrogen, air speed 1.0 × 105ml·g-1·h- 1,To corresponding formaldehyde conversion
It is tested.
The experimental results showed that using single-walled carbon nanotube of the argon gas as hollow ball-shape made from annealing medium in embodiment 1
Microballoon carbon-based supports carry out pattern handling with PDDA and PSS, then carry out Ni(NO3)2And Fe(NO3)3It is modified, when single wall carbon is received
Mitron solid and potassium permanganate solid masses ratio are 1;4, and when rare earth nitrades and sodium tungstate molar ratio are 3:1, PARA FORMALDEHYDE PRILLS(91,95)
Adsorption effect is best；Embodiment 2 arrives embodiment 10, changes the mass ratio of single-walled carbon nanotube solid and potassium permanganate solid respectively
Example, PARA FORMALDEHYDE PRILLS(91,95) catalytic performance have different degrees of influence, and when ratio is 1:4, almost all is converted；Reference examples 1 change alkali
Liquid composition, adsorption effect are decreased obviously, and illustrate that the base strength of hydrogen peroxide produces bigger effect carbon-based supports structure；Reference examples
2 and reference examples 3 using single liquid modify silicon dioxide microsphere template, catalytic effect is also bad, says the dual modification of PDDA and PSS
Catalytic performance is had a major impact；Reference examples 4 and example 5 change anneal gas medium, and catalytic conversion is decreased obviously, and illustrate lazy
Property argon annealed is critically important to catalyst preparation, and reference examples 6 and reference examples 8 change native nitrate and sodium tungstate molar ratio,
Absorption property is deteriorated, and illustrates that effect is best when molar ratio is 3:1；Ni(NO3 is only added in reference examples 9 and example 10)2And Fe
(NO3)3One such metal salt, whole catalytic effect is all poor, illustrates that only there are two types of metal salts to act synergistically, catalysis effect
Fruit can just improve；Therefore the single-walled carbon nanotube microballoon carbon-based supports of hollow ball-shape are used, it is modified by metal salt solution, with argon
Gas has good clean-up effect as carbon nanotube formaldehyde purifying agent made from annealing medium.
Claims (2)
1. a kind of protective mask, which is characterized in that it includes mask body, the mask body, the mask body sheet
Body includes outer layer middle layer and internal layer, and the centre of outer layer has a support frame, the support frame two sides have upper ventilative seam and
Lower ventilative seam, the upper ventilative seam and lower ventilative seam also have air vent, and the two sides of the mask body have fixing belt；
The two sides of the mask body respectively have there are two fixing belt, are symmetrical arranged up and down；
The outer layer is barrier layer, and middle layer is cleaned filtering layer, and internal layer is contact layer；The cleaned filtering layer uses nanometer
The bis- modification single-walled carbon nanotube formaldehyde composite catalyzings of material for air purification, specially Ni/Fe-PDDA/PSS purify particle, system
Preparation Method is as follows:
The single-walled carbon nanotube solid of 0.05kg and potassium permanganate solid are added to excessive by step 1 together with the proportion of 1:4
In concentrated sulfuric acid solution, obtained reaction mixture, which is placed in 50 DEG C of water-bath, stirs 1h with constant temperature blender with magnetic force；
After step 2 dilutes above-mentioned reacted mixed liquor with deionized water, excessive hydrogen peroxide solution is added and stirs 20min；
After above-mentioned reacted mixed liquor is used the washing of filtering with microporous membrane and dilute hydrochloric acid solution by step 3, what is obtained consolidates
It is neutral that body is washed by high speed centrifugation to supernatant liquor with deionized water again；
Then step 4 takes lower layer's solid that deionized water is added to be sufficiently stirred after, after further centrifuge washing, take upper layer uniform, stable
Solution, up to solution A；
Silicon dioxide microsphere template 0.01kg ultrasonic disperse in 500ml aqueous isopropanol, is added polydiene propyl by step 5
Dimethyl ammonium ammonium chloride and each 50g electromagnetic agitation 10min of kayexalate, obtain solution B；
Above-mentioned solution B is then added drop-wise in solution A by step 6, and 50 DEG C of constant temperature blender with magnetic force stir 0.5h, and standing sedimentation is gone
Its supernatant liquor, obtains solid product；
Silica is etched with 10%HF remove at room temperature, passed through by the solid product that step 7 obtains above-mentioned steps
After filtering washing and drying, anneal 10h under argon inert atmosphere, obtains head product；
The head product that step 8 obtains above-mentioned steps is added in the mixed solution of rare earth nitrades and sodium tungstate and impregnates 48h, temperature
50 DEG C of degree, rare earth nitrades and sodium tungstate molar ratio are 3:1, concentration 0.5mol/L；Nitrate and sodium tungstate are shaken in ultrasonic wave
Lower removal of impurities is swung, is then dissolved in deionized water；
Then step 9 is centrifugated under centrifugal separator, vacuum rotary evaporator removes moisture removal；
The Ni(NO of 0.02mol is added in above-mentioned products therefrom by step 10 3)2, 0.04mol Fe(NO 3)3With 0.3mol's
NaCl is dissolved in 50ml water, instills the sodium hydroxide solution of 1mol/L, forms precipitating, adjusts PH=9；
Above-mentioned precipitating mixed liquor is put into 85 ~ 95 DEG C of air blast thermostatic drying chambers and dries to weight by step 11；
Solid after above-mentioned drying is then placed on isothermal reaction 3h in 700 DEG C of vacuum atmosphere resistance furnaces by step 12, drops to room
Extra ion is removed to neutral wash with distilled water after temperature, it is bis- to obtain final Ni/Fe-PDDA/PSS by 100 DEG C of dry 12h
It modifies single-walled carbon nanotube formaldehyde composite catalyzing and purifies particle.
2. a kind of protective mask according to claim 1, which is characterized in that the contact layer of the internal layer uses non-woven fabrics
Material.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710805893.0A CN107373822B (en) | 2017-09-08 | 2017-09-08 | A kind of protective mask |
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| CN201710805893.0A CN107373822B (en) | 2017-09-08 | 2017-09-08 | A kind of protective mask |
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| CN107373822B true CN107373822B (en) | 2019-03-01 |
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| CN104305591B (en) * | 2014-09-23 | 2016-07-20 | 西安交通大学医学院第一附属医院 | A kind of have the haze mask filtered with adsorption dual function based on nanostructured |
| CN206597379U (en) * | 2015-08-11 | 2017-10-31 | 清华大学 | Air filter unit based on silk nanofiber |
| CN205040697U (en) * | 2015-09-28 | 2016-02-24 | 上海舒爽材料科技有限公司 | Cartoon type gauze mask |
| CN205923001U (en) * | 2016-05-13 | 2017-02-08 | 姚爱军 | Disposable gauze mask with longitudinal support body |
| CN107041581A (en) * | 2017-06-19 | 2017-08-15 | 广西纺源医疗科技有限公司 | Disposable Chinese medicine medical mask and preparation method thereof |
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