CN106031530B - A kind of haze antiseptic face mask and preparation method - Google Patents

A kind of haze antiseptic face mask and preparation method Download PDF

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CN106031530B
CN106031530B CN201510114477.7A CN201510114477A CN106031530B CN 106031530 B CN106031530 B CN 106031530B CN 201510114477 A CN201510114477 A CN 201510114477A CN 106031530 B CN106031530 B CN 106031530B
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chitosan
filter disc
tio
water
titanium dioxide
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CN106031530A (en
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高鹏
杨勇平
高彬彬
张锴
高建强
陈鸿伟
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North China Electric Power University
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North China Electric Power University
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Abstract

A kind of haze antiseptic face mask and preparation method, the mouth mask includes cover body, and cover body is provided with filter disc bag, and filter disc bag is built with isolation filter disc, isolation filter disc is made up of nonwoven layer, carbon fiber layer and sterilizing layer, and sterilizing layer middle part is gauze in gauze dual coating titanium dioxide chitosan film.The inventive method includes the steps such as configuration TiO2 colloidal sols, configuration chitosan solution glue, magnetic agitation, ultrasonic oscillation, coating film forming, making filter disc.Mouth mask antibiotic and sterilizing of the present invention, haze effect are good, have the function of adsorption filtration heavy metal ion, and water suction gas permeability is strong, can quickly absorb the steam of breathing discharge, reduce cold snap water smoke to the adverse effect worn glasses.Isolation filter disc of the present invention can be washed with water or steam purge, can Reusability, substantially reduce haze mouth mask use cost.

Description

A kind of haze antiseptic face mask and preparation method
Technical field
The present invention relates to a kind of mouth mask and preparation method, the haze sterilization particularly provided with capable of washing, replaceable filter disc Mouth mask.
Background technology
Mouth mask is a kind of conventional hygiene protective furnishings.As the fast development of process of industrialization, atmosphere pollution are further tight Weight, air quality constantly deteriorate, and frequently occurring for haze weather threatens to people's health, especially to for a long time in room People's harm of outer work is even more serious.On the other hand, there is the outbreak of communicable diseases such as a variety of viruses, influenza, bird flu in air Period people, which go out to wear masks, almost turns into essential link.Common gauze or non-woven fabrics gauze mask are because function is single, nothing Method is effectively isolated haze and virus, is phased out, and the mouth mask of various different structures constantly emerges, and includes protection among these The mouth mask of haze function and anti-virus functionality.But the mouth mask of prior art has following problem:1st, the mist less than 2.5 microns is prevented Haze little particle sucks the ineffective of lung;2nd, anti-virus sterilizing function falls flat;For example, there is a kind of chitosan compound Mouth mask, it includes the gauze functional layer containing chitosan particle, and chitosan is a kind of environmental type antibacterial finishing agent, has anti- Bacterium sterilizing function, but the antibacterial activity of chitosan is relatively low, the gauze layer that chitosan is adhered to graininess in addition, its adhesive force compared with It is low, it is very easy to fall off, antiviral function is lost if coming off, therefore this mouth mask is difficult to reach preferable in actual use Antibiotic and sterilizing effect;3rd, it is water suction poor air permeability the shortcomings that its general character of existing mouth mask, in arctic weather, caused water smoke of breathing out Very burden can be produced to the personage that wears glasses, so that mouth mask can not be worn;4th, existing haze mouth mask, antiseptic face mask are mostly Disposable products, it is impossible to clean, usage time it is short, add use cost, cause to waste to a certain extent;5th, existing mouth mask lacks The weary absorption isolation features to heavy metal ion in air.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of haze antiseptic face mask, and it has good Isolation haze, virus, heavy metal ion and moisture absorbing, and use can be cleaned repeatedly.
It is a further object of the present invention to provide the preparation method of the haze antiseptic face mask.
Problem solves by the following technical programs alleged by the present invention:
A kind of haze antiseptic face mask, including cover body, the cover body are provided with filter disc bag, filter disc bag built with isolation filter disc, Isolation filter disc is made up of nonwoven layer, carbon fiber layer and sterilizing layer, and sterilizing layer middle part is gauze in gauze dual coating titanium dioxide Titanium chitosan film.
Above-mentioned haze antiseptic face mask, the gauze of the sterilizing layer are one layer or two layers, the titanium dioxide chitosan film Thickness be 20-50 μm, titanium dioxide includes anatase type nano TiO in titanium dioxide chitosan film2And rutile-type TiO2, wherein anatase type nano TiO2With rutile TiO2Mass ratio be 5:3-10:3.
The preparation method of above-mentioned haze antiseptic face mask, the isolation filter disc are prepared in accordance with the following steps:
A. TiO is configured2Colloidal sol:Absolute ethyl alcohol, butyl titanate, water are taken, the volume ratio of above-mentioned three kinds of materials is anhydrous second Alcohol:Butyl titanate:Water=30:1:3,2/3rds of absolute ethyl alcohol total amount are mixed evenly with butyl titanate, by more than Amount absolute ethyl alcohol is instilled in the mixture of absolute ethyl alcohol and butyl titanate after being mixed with water, adds acid solution regulation said mixture PH be 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol;
B. chitosan solution glue is configured:According to adding 1-5g chitosans, 5-25mg salt compounded of iodine in 80ml acid solutions and 20ml water Proportional arrangement chitosan solution glue, proportional quantity salt compounded of iodine and water are mixed into uniform salt compounded of iodine water, then by the chitosan of proportional quantity, Acid solution and salt compounded of iodine water mix, and are completely dissolved to chitosan, that is, are prepared into chitosan solution glue, the acid solution is 1%-2% matter Acetic acid, hydrochloric acid or the nitric acid of concentration are measured, the salt compounded of iodine is KI, ammonium iodide or Potassiumiodate;
C. magnetic agitation:The TiO for taking a steps, b step to prepare2Colloidal sol and chitosan solution glue, according to volume ratio TiO2It is molten Glue:Chitosan solution glue=1:9-11 is by TiO2Colloidal sol is added in chitosan solution glue, magnetic agitation mixed solution glue 20-30 Minute;
D. ultrasonic oscillation:By the mixed solution glue ultrasonic oscillation 20-30min through step c magnetic agitation, supersonic frequency Rate 40KHZ, power 200W, 40-60 DEG C of temperature, make TiO2It is uniformly dispersed, that is, is made containing nanoscale TiO2Titanium dioxide shell gather Sugar sol;
E. coating film forming:Individual layer or double-deck hospital gauze are immersed in titanium dioxide chitosan colloidal sol, two will be thoroughly impregnated The hospital gauze of titanium oxide chitosan colloidal sol takes out immerses film-forming in aqueous slkali again, takes out washing, dries, that is, is made and scribbles The sterilizing layer of titanium dioxide chitosan film;
F. filter disc is made:The sterilizing layer for taking non-woven fabrics, carbon fiber and above-mentioned steps to make cut out it is blocking, according to non-woven fabrics, Isolation filter disc is made in the compound sewing slabbing of above-mentioned three by carbon fiber, the order of sterilizing layer.
The preparation method of above-mentioned haze antiseptic face mask, the aqueous slkali in the coating film forming step is that mass percent is 10% NaOH solution.
The preparation method of above-mentioned haze antiseptic face mask, choose hospital gauze and cover body is made, set in the medial surface of cover body Soft nose frame, the filter disc bag for setting top to open in soft nose frame bottom, the shape of filter disc bag and shape, the size of isolating filter disc Match somebody with somebody, isolation filter disc is placed into by sterilizing layer in filter disc bag towards putting in the way of on the inside of cover body.
Haze antiseptic face mask provided by the present invention includes cover body, and cover body is provided with filter disc bag, and filter disc bag is built with can be with Cleaning, the isolation filter disc that can be changed.Isolation filter disc is made up of nonwoven layer, carbon fiber layer and sterilizing layer, and sterilizing layer is coating The gauze of titanium dioxide chitosan film.The nonwoven layer of isolation filter disc is once isolated to the big dust particle in air, Carbon fiber layer carries out secondary isolation to the little particle dust in air, and sterilizing layer is while virus-isolating bacterium in air Nano sized particles dust is isolated three times, by isolating three times, can effectively prevent the haze little particle less than 2.5 microns from sucking Lung.The titanium dioxide chitosan film of sterilizing layer, it is that titanium dioxide and salt compounded of iodine are added in chitosan, it is made by film technique Firmly it is compounded on gauze.The Nano titanium dioxide of the present invention two kinds of forms compound in chitosan, on the one hand can lead to Crossing synergy strengthens its antibiotic property, and the opposing party has the function of adsorption filtration heavy metal ion;Furthermore illumination frequency has been widened, Make it that there is higher catalytic activity in the sunlight.The moisture absorption of titanium dioxide chitosan film, water suction, gas permeability are strong, and absorption speed is fast, Cold snap breathing water smoke can be substantially reduced to the adverse effect worn glasses.Experiment shows, isolates suction of the filter disc to water vapour The property received moisture absorption in 10 minutes weightening is reached up to more than 60% up to the weightening of moisture absorption in 30%, 40 minute;Water imbibition weight in 10 minutes can increase Add 250%, reach as high as 300%;The titanium dioxide chitosan film being solidified into by alkali lye at normal temperatures pH=5-7 when heavy metal Hg2+ has preferable adsorption effect.In addition, titanium dioxide chitosan film is not soluble in water and alkaline solution, insoluble in pH>5 it is sour molten Liquid, thus isolate filter disc can use hot-water soak or steam clean, using effect is not influenceed after cleaning, the characteristic reduce use into This, is advantageous to promoting the use of for the mouth mask.
Brief description of the drawings
The invention will be further described below in conjunction with the accompanying drawings.
Fig. 1 is the schematic diagram of haze antiseptic face mask of the present invention;
Fig. 2 is the schematic diagram for isolating filter disc;
Fig. 3 is the A-A sectional views in Fig. 2;
Fig. 4 is Fig. 3 B portions partial enlarged view;
Fig. 5 is the SEM figures of titanium dioxide chitosan film of the present invention(Scanning electron microscope (SEM) photograph).
Each list of reference numerals is in figure:1st, cover body, 2, soft nose frame, 3, filter disc bag, 4, isolation filter disc, 4-1, nonwoven layer, 4- 2nd, carbon fiber layer, 4-3, titanium dioxide chitosan film, 4-4, gauze, 5, respirator belt.
Embodiment
Referring to Fig. 1, the present invention includes cover body 1 and isolation filter disc 4, and soft nose frame 2, soft nose frame are provided with the inside upper part of cover body Bottom is provided with the filter disc bag 3 that top opens, and for filter disc bag built with isolation filter disc 4, cover body both sides are provided with respirator belt 5.
Referring to Fig. 2, Fig. 3, Fig. 4, isolate the carbon fiber that nonwoven layer 4-1, the carbon fiber that filter disc is made by non-woven fabrics make Layer 4-2 and sterilizing layer are formed, and are individual layer or double gauze 4-4 in the middle part of sterilizing layer, in gauze two-sided coatings titanium dioxide chitosan Film 4-3.Sterilizing layer should be made towards on the inside of cover body by isolating modes of emplacement of the filter disc in filter disc bag.
The present invention sets the isolation filter disc that can clean, can replace in cover body, and the three-decker for isolating filter disc can be with It is effectively isolated haze little particle.The nonwoven layer of isolation filter disc is once isolated to the big dust particle in air, carbon fiber Layer carries out secondary isolation to the little particle dust in air, and sterilizing layer is while antibiotic and sterilizing to the nano sized particles powder in air Dirt is isolated three times, by isolating three times, can effectively prevent the haze little particle suction lung less than 2.5 microns.
The titanium dioxide chitosan film that sterilizing layer coats 20-50 μ m thicks on hospital gauze is the crucial knot for isolating filter disc Structure.Titanium dioxide chitosan film product having enhanced antibacterial action, it can effectively prevent mouth mask breed bacteria.Chitosan is the deacetylated of crust rope Change product, there is excellent broad spectrum antibacterial, it is equal to Escherichia coli, hay bacillus, staphylococcus aureus and Pseudomonas aeruginosa etc. There is rejection ability, and with spies such as hygroscopicity, gas permeability, degradability, bioactivity, chelant and enzyme immobilization effects Property, it is nontoxic, pollution-free, it is a kind of environmental type antiseptic.Metal oxide Ti02Nontoxic, tasteless and nonirritant, thermostabilization Property with heat-resist, itself for white, high temperature is non-discolouring, does not decompose, and with self-cleaning, strong antibacterial, has a broad antifungal spectrum, The advantages that durable antibacterial effect.Chitosan film is loaded into nano-TiO2After film forming, the two synergy, antibacterial effect is being improved Meanwhile also there is the effect of absorption heavy metal ion.Titanium dioxide is with Detitanium-ore-type in titanium dioxide chitosan film of the present invention Nano-TiO2And rutile TiO2With mass ratio 5:3-10:3 combinations, the combination can widen illumination frequency to 380nm- 700nm, also there is higher catalytic activity in the sunlight.Specific surface area increases considerably after titanium dioxide chitosan film forming, by 0.2921m2/g increases to 6.2368m2/g.It is doped with the TiO of salt compounded of iodine2It is mercury ion to enhance gas phase Elemental Mercury catalysis oxidation, The ability of recombination chitosan film trap heavy metals mercury is improved, while film layer aperture is small, water suction gas permeability is strong, can quickly absorb and exhale The steam that suction goes out, reduce cold snap water smoke to the adverse effect worn glasses;In addition, titanium dioxide chitosan film is insoluble In water and alkali lye, insoluble in pH>5 acid solution, making isolation filter disc can be washed with water or steam purge, Reusability, significantly Reduce haze mouth mask use cost.
The preparation method of haze mouth mask of the present invention includes the making that cover body makes and isolates filter disc, wherein isolation filter The making of piece is the key technology of the inventive method, and isolation filter disc is prepared in accordance with the following steps:
A. TiO is configured2Colloidal sol:Absolute ethyl alcohol, butyl titanate, water are taken, the volume ratio of above-mentioned three kinds of materials is anhydrous second Alcohol:Butyl titanate:Water=30:1:3,2/3rds of absolute ethyl alcohol total amount are mixed evenly with butyl titanate, by more than Amount absolute ethyl alcohol is instilled in the mixture of absolute ethyl alcohol and butyl titanate after being mixed with water, adds acid solution regulation said mixture PH be 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol.
B. chitosan solution glue is configured:According to the salt compounded of iodine that 1-5g chitosans, 5-25mg are added in 80ml acid solutions and 20ml water Proportional arrangement chitosan solution glue, proportional quantity salt compounded of iodine and water are mixed into uniform salt compounded of iodine water, then gathered the shell of proportional quantity Sugar, acid solution and salt compounded of iodine water mix to chitosan and are completely dissolved, that is, are prepared into chitosan solution glue, the acid solution is 1%-2% Acetic acid, hydrochloric acid or the nitric acid of mass concentration, the salt compounded of iodine are KI, NH4I or Potassiumiodate.Chitosan contains in chitosan solution glue Amount and the film forming thickness positive correlation of titanium dioxide chitosan film, the chitosan solution glue film forming thickness configured according to aforementioned proportion are 20-50µm。
C. magnetic agitation:Take the TiO prepared2Colloidal sol and chitosan solution glue, according to volume ratio TiO2Colloidal sol:Chitosan Solution glue=1:9-10 is by TiO2Colloidal sol is added in chitosan solution glue, magnetic agitation mixed solution glue 20-30 minutes.Magnetic force Stirring is in order that above two solution glue reaches the purpose fully mixed.
D. ultrasonic oscillation:By the mixed solution glue ultrasonic oscillation 20-30min Jing Guo step c magnetic agitation, ultrasound Frequency 40KHZ, power 200W, 40-60 DEG C of temperature.Ultrasonic oscillation step can produce cavitation, and cavitation can produce Local HTHP, and huge impulsive force and microjet are produced, make TiO2Colloidal sol crystallizes to form nano-TiO at low temperature2, Nano-powder is under its effect simultaneously, and surface energy is weakened, so as to realize to the dispersed of nano-powder.The present invention is using first Configure TiO2Colloidal sol, chitosan solution glue, then the method that two kinds of solution glues mix is carried out, compared to directly in chitosan solution glue Add TiO2Nano-TiO can be obtained2The scattered more abundant, effect being more uniformly distributed that is mixed in chitosan solution glue.
E. coating film forming:Individual layer or double-deck hospital gauze are immersed in titanium dioxide chitosan colloidal sol, then will fully be soaked The hospital gauze of saturating titanium dioxide chitosan colloidal sol takes out immerses film-forming in aqueous slkali again, takes out washing, dries, that is, is made Scribble the sterilizing layer of titanium dioxide chitosan film.The aqueous slkali use mass percent for 10% NaOH solution.Above-mentioned coating Film formation step, be advantageous to the solidification of gauze biofilm and film, be not required to adhesive bond, suitable for batch production, titanium dioxide chitosan It is firm to be connected after film forming with gauze, difficult for drop-off.
F. filter disc is made:The sterilizing layer for taking non-woven fabrics, carbon fiber and above-mentioned steps to make cut out it is blocking, according to non-woven fabrics, Isolation filter disc is made in the compound sewing slabbing of above-mentioned three by carbon fiber, the order of sterilizing layer.
Choose hospital gauze and cover body is made, soft nose frame is set in the medial surface of cover body, sets top to open in soft nose frame bottom The filter disc bag put, the shape of filter disc bag and isolate the shape of filter disc, size matches, by sterilizing layer towards in the way of on the inside of cover body Put and isolation filter disc is placed into filter disc bag, that is, mouth mask of the present invention is made.
Above-mentioned step c, Step d TiO2Magnetic agitation time, ultrasonic vibration time when colloidal sol mixes with chitosan solution glue And reaction temperature is control anatase type nano TiO2And rutile TiO2Ratio and grain size key.Higher is anti- Answer temperature, longer magnetic agitation and ultrasonic oscillation time can promote Detitanium-ore-type crystal grain to rutile-type change, iodine from The doping of son can also promote Detitanium-ore-type crystal grain to change to rutile-type crystal grain, while play suppression crystal grain and grow up, refine crystalline substance The effect of grain.Operated according to step c, the method for Step d, TiO2Crystal grain diameter is between 80-400nm, anatase type nano TiO2:Rutile TiO2For 5:3-10:3.
Referring to Fig. 5, nano-TiO in titanium dioxide chitosan film can intuitively be found out by scanning electron microscope (SEM) photograph SEM2Distribution feelings Condition, it is rutile type nano TiO in cube body plate shape2, particle is comparatively fine for Detitanium-ore-type TiO2, both are about at ratio 3:7, smallest particles is iodide.
It is given below to make the isolation several specific embodiments of filter disc:
Embodiment 1:According to volume ratio 30:1:3 take absolute ethyl alcohol, butyl titanate, water, by three points of absolute ethyl alcohol total amount Two be mixed evenly with butyl titanate, absolute ethyl alcohol and butyl titanate are instilled after surplus absolute ethyl alcohol is mixed with water Mixture in, add acid solution regulation said mixture pH be 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol;According to In 80ml acid solutions and 20ml water, the proportional arrangement chitosan solution glue of 1g chitosans and 5mg KIs, by proportional quantity KI with Water is mixed into uniform salt compounded of iodine water, and the chitosan of proportional quantity, acid solution and salt compounded of iodine water are mixed, are completely dissolved to chitosan, Chitosan solution glue is prepared into, the acid solution is the acetic acid of 1% mass concentration;Take the TiO prepared2Colloidal sol and chitosan are molten Sol, according to volume ratio 1:9 by TiO2Colloidal sol is added in chitosan solution glue, magnetic agitation mixed solution glue 20 minutes;Will Mixed solution glue ultrasonic oscillation 30min, 40KHZ, power 200W, temperature 50 C through magnetic agitation, that is, be made titanium dioxide Titanium chitosan colloidal sol;Monolayer medical gauze is immersed in titanium dioxide chitosan colloidal sol, titanium dioxide chitosan will be thoroughly impregnated The hospital gauze of colloidal sol takes out immerses film-forming in the NaOH solution that mass percent is 10% again, takes out washing, dries, i.e., The sterilizing layer coated with titanium dioxide chitosan film is made;The sterilizing layer for taking non-woven fabrics, carbon fiber and above-mentioned steps to make is cut out It is blocking, according to non-woven fabrics, carbon fiber, sterilizing layer order by the compound sewing slabbing of above-mentioned three, that is, isolation filter disc is made.
Embodiment 2:According to volume ratio 30:1:3 take absolute ethyl alcohol, butyl titanate, water, by three points of absolute ethyl alcohol total amount Two be mixed evenly with butyl titanate, absolute ethyl alcohol and butyl titanate are instilled after surplus absolute ethyl alcohol is mixed with water Mixture in, add acid solution regulation said mixture pH be 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol;According to The proportional arrangement chitosan solution glue of 3g chitosans and 10mg ammonium iodides is added in 80ml acid solutions and 20ml water, by proportional quantity iodate Ammonium is mixed into uniform salt compounded of iodine water with water, and the chitosan of proportional quantity, acid solution and salt compounded of iodine water are mixed, completely molten to chitosan Solution, that is, be prepared into chitosan solution glue, and the acid solution is the hydrochloric acid of 2% mass concentration;Take the TiO prepared2Colloidal sol and shell gather Sugar juice glue, according to volume ratio 1:10 by TiO2Colloidal sol is added in chitosan solution glue, and magnetic agitation mixed solution glue 30 divides Clock;By mixed solution glue ultrasonic oscillation 25min, 40KHZ through magnetic agitation, power 200W, 55 DEG C of temperature, that is, it is made two Titanium oxide chitosan colloidal sol;Monolayer medical gauze is immersed in titanium dioxide chitosan colloidal sol, titanium dioxide shell will be thoroughly impregnated The hospital gauze of glycan colloidal sol takes out immerses film-forming in the NaOH solution that mass percent is 10% again, takes out washing, dries in the air It is dry, that is, the sterilizing layer coated with titanium dioxide chitosan film is made;The sterilizing layer for taking non-woven fabrics, carbon fiber and above-mentioned steps to make Cut out it is blocking, according to non-woven fabrics, carbon fiber, sterilizing layer order by the compound sewing slabbing of above-mentioned three, that is, isolation filter is made Piece.
Embodiment 3:According to volume ratio 30:1:3 take absolute ethyl alcohol, butyl titanate, water, by three points of absolute ethyl alcohol total amount Two be mixed evenly with butyl titanate, absolute ethyl alcohol and butyl titanate are instilled after surplus absolute ethyl alcohol is mixed with water Mixture in, add acid solution regulation said mixture pH be 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol;According to The proportional arrangement chitosan solution glue of 5g chitosans and 15mg Potassiumiodates is added in 80ml acid solutions and 20ml water, by the iodine of proportional quantity Sour potassium is mixed into uniform salt compounded of iodine water with water, and the chitosan of proportional quantity, acid solution and salt compounded of iodine water are mixed, complete to chitosan Dissolving, that is, be prepared into chitosan solution glue, and the acid solution is the nitric acid of 1.5% mass concentration;Take the TiO prepared2Colloidal sol and Chitosan solution glue, according to volume ratio 1:11 by TiO2Colloidal sol is added in chitosan solution glue, magnetic agitation mixed solution glue 25 minutes;By mixed solution glue ultrasonic oscillation 20min, 40KHZ, power 200W, temperature 60 C through magnetic agitation, that is, make Into titanium dioxide chitosan colloidal sol;Double-deck hospital gauze is immersed in titanium dioxide chitosan colloidal sol, titanium dioxide will be thoroughly impregnated The hospital gauze of titanium chitosan colloidal sol takes out immerses film-forming in the NaOH solution that mass percent is 10% again, taking-up washing, Dry, that is, the sterilizing layer coated with titanium dioxide chitosan film is made;The sterilization for taking non-woven fabrics, carbon fiber and above-mentioned steps to make Layer cut out it is blocking, according to non-woven fabrics, carbon fiber, sterilizing layer order by the compound sewing slabbing of above-mentioned three, that is, isolation is made Filter disc.
Embodiment 4:According to volume ratio 30:1:3 take absolute ethyl alcohol, butyl titanate, water, by three points of absolute ethyl alcohol total amount Two be mixed evenly with butyl titanate, absolute ethyl alcohol and butyl titanate are instilled after surplus absolute ethyl alcohol is mixed with water Mixture in, add acid solution regulation said mixture pH be 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol;According to The proportional arrangement chitosan solution glue of 4g chitosans and 25mg Potassiumiodates is added in 80ml acid solutions and 20ml water, by the iodine of proportional quantity Sour potassium is mixed into uniform salt compounded of iodine water with water, and the chitosan of proportional quantity, acid solution and salt compounded of iodine water are mixed, complete to chitosan Dissolving, that is, be prepared into chitosan solution glue, and the acid solution is the nitric acid of 1.5% mass concentration;Take the TiO prepared2Colloidal sol and Chitosan solution glue, according to volume ratio 1:10.5 by TiO2Colloidal sol is added in chitosan solution glue, magnetic agitation mixed solution Glue 25 minutes;By mixed solution glue ultrasonic oscillation 30min, 40KHZ through magnetic agitation, power 200W, 40 DEG C of temperature, i.e., Titanium dioxide chitosan colloidal sol is made;Double-deck hospital gauze is immersed in titanium dioxide chitosan colloidal sol, dioxy will be thoroughly impregnated Film-forming in the NaOH solution that mass percent is 10% is immersed in the hospital gauze taking-up for changing titanium chitosan colloidal sol again, takes out water Wash, dry, that is, the sterilizing layer coated with titanium dioxide chitosan film is made;Take what non-woven fabrics, carbon fiber and above-mentioned steps made Sterilizing layer cut out it is blocking, according to non-woven fabrics, carbon fiber, sterilizing layer order by the compound sewing slabbing of above-mentioned three, that is, be made Isolate filter disc.
Embodiment 5:According to volume ratio 30:1:3 take absolute ethyl alcohol, butyl titanate, water, by three points of absolute ethyl alcohol total amount Two be mixed evenly with butyl titanate, absolute ethyl alcohol and butyl titanate are instilled after surplus absolute ethyl alcohol is mixed with water Mixture in, add acid solution regulation said mixture pH be 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol;According to The proportional arrangement chitosan solution glue of 2g chitosans and 25mg KIs is added in 80ml acid solutions and 20ml water, by the iodine of proportional quantity Sour potassium is mixed into uniform salt compounded of iodine water with water, and the chitosan of proportional quantity, acid solution and salt compounded of iodine water are mixed, complete to chitosan Dissolving, that is, be prepared into chitosan solution glue, and the acid solution is the nitric acid of 1.5% mass concentration;Take the TiO prepared2Colloidal sol and Chitosan solution glue, according to volume ratio 1:9.5 by TiO2Colloidal sol is added in chitosan solution glue, magnetic agitation mixed solution Glue 25 minutes;By mixed solution glue ultrasonic oscillation 20min, 40KHZ, power 200W, temperature 45 C through magnetic agitation, i.e., Titanium dioxide chitosan colloidal sol is made;Double-deck hospital gauze is immersed in titanium dioxide chitosan colloidal sol, dioxy will be thoroughly impregnated Film-forming in the NaOH solution that mass percent is 10% is immersed in the hospital gauze taking-up for changing titanium chitosan colloidal sol again, takes out water Wash, dry, that is, the sterilizing layer coated with titanium dioxide chitosan film is made;Take what non-woven fabrics, carbon fiber and above-mentioned steps made Sterilizing layer cut out it is blocking, according to non-woven fabrics, carbon fiber, sterilizing layer order by the compound sewing slabbing of above-mentioned three, that is, be made Isolate filter disc.
The sterilizing layer made according to above-described embodiment is subjected to wettability test:To the absorbability of water vapour, with individual layer yarn Cloth titanium dioxide coating chitosan film sterilizing layer moisture absorption in 10 minutes weightening up to moisture absorption in 30%, 40 minute weightening reach up to 60% with On;With the sterilizing layer of double gauze titanium dioxide coating chitosan film, the weightening of moisture absorption in 10 minutes 30%, the weightening of moisture absorption in 40 minutes can Up to 90%.
The sterilizing layer made according to above-described embodiment is subjected to water absorption test:The weight in rapid 10 minutes that absorbs water can increase 250%, reach as high as 300%.
The sterilizing layer made according to above-described embodiment is subjected to mercury ion adsorption test:Under normal temperature visible ray, pH=5 ~ 7 When heavy metal Hg2+ have preferable adsorption effect:Initial mercury concentration is 1ppm, during solution 25ml, puts into titanium dioxide of the present invention Chitosan film 100mg, adsorption capacity is 179470ng/g at 20 minutes, adsorption efficiency 71.79%;Adsorption capacity at 40 minutes For 251520ng/g, adsorption efficiency 100%;Chitosan alone film is contrasted, the lower 20 minutes adsorption capacities of the same terms are only 40430ng/g, adsorption efficiency 16.18%, adsorption efficiency reaches 72% at 60 minutes.It can be seen that titanium dioxide chitosan film of the present invention Adsorption capacity be 4.44 times of chitosan alone film, the rate of adsorption is greatly speeded up.
The sterilizing layer made according to above-described embodiment is subjected to gaseous mercury simple substance adsorption test:It is single under 40 DEG C of air atmospheres Matter mercury concentration is 15 μ g/m3When, when film quality is 20mg, Elemental Mercury average adsorption efficiency is put down in 80%, 40min in 20min Equal adsorption efficiency is more than 65%.

Claims (3)

  1. A kind of 1. preparation method of haze antiseptic face mask, it is characterised in that:The mouth mask includes cover body(1), cover body, which is provided with, to be filtered Piece bag(3), filter disc bag is built with isolation filter disc(4), isolation filter disc is by nonwoven layer(4-1), carbon fiber layer(4-2)And sterilizing layer Form, be gauze in the middle part of sterilizing layer(4-4)In gauze dual coating titanium dioxide chitosan film(4-3):
    The gauze of the sterilizing layer is one layer or two layers, and the thickness of the titanium dioxide chitosan film is 20-50 μm, in titanium dioxide Titanium dioxide includes anatase type nano TiO in titanium chitosan film2And rutile TiO2, wherein anatase type nano TiO2With Rutile TiO2Mass ratio be 5:3-10:3;
    The isolation filter disc is prepared in accordance with the following steps:
    A. TiO is configured2Colloidal sol:Absolute ethyl alcohol, butyl titanate, water are taken, the volume ratio of above-mentioned three kinds of materials is absolute ethyl alcohol:Titanium Sour four butyl esters:Water=30:1:3,2/3rds of absolute ethyl alcohol total amount are mixed evenly with butyl titanate, by surplus without Water-ethanol is instilled in the mixture of absolute ethyl alcohol and butyl titanate after being mixed with water, adds the pH of acid solution regulation said mixture For 3, continue stirring 2 hours, that is, be prepared into TiO2Colloidal sol;
    B. chitosan solution glue is configured:According to the ratio that 1-5g chitosans, 5-25mg salt compounded of iodine are added in 80ml acid solutions and 20ml water Chitosan solution glue is configured, proportional quantity salt compounded of iodine and water are mixed into uniform salt compounded of iodine water, then by the chitosan of proportional quantity, acid solution Mix with salt compounded of iodine water, be completely dissolved to chitosan, that is, be prepared into chitosan solution glue, the acid solution is that 1%-2% mass is dense Acetic acid, hydrochloric acid or the nitric acid of degree, the salt compounded of iodine are KI, ammonium iodide or Potassiumiodate;
    C. magnetic agitation:The TiO for taking a steps, b step to prepare2Colloidal sol and chitosan solution glue, according to volume ratio TiO2Colloidal sol: Chitosan solution glue=1:9-11 is by TiO2Colloidal sol is added in chitosan solution glue, 20-30 points of magnetic agitation mixed solution glue Clock;
    D. ultrasonic oscillation:By the mixed solution glue ultrasonic oscillation 20-30min through step c magnetic agitation, supersonic frequency 40KHZ, power 200W, 40-60 DEG C of temperature, make TiO2It is uniformly dispersed, that is, is made containing nanoscale TiO2Titanium dioxide chitosan Colloidal sol;
    E. coating film forming:Individual layer or double-deck hospital gauze are immersed in titanium dioxide chitosan colloidal sol, titanium dioxide will be thoroughly impregnated The hospital gauze of titanium chitosan colloidal sol takes out immerses film-forming in aqueous slkali again, takes out washing, dries, that is, is made and scribbles dioxy Change the sterilizing layer of titanium chitosan film;
    F. filter disc is made:The sterilizing layer for taking non-woven fabrics, carbon fiber and above-mentioned steps to make cut out it is blocking, it is fine according to non-woven fabrics, carbon Isolation filter disc is made in the compound sewing slabbing of above-mentioned three by dimension, the order of sterilizing layer.
  2. 2. the preparation method of haze antiseptic face mask according to claim 1, it is characterised in that:The coating film forming step In aqueous slkali be NaOH solution that mass percent is 10%.
  3. 3. the preparation method of haze antiseptic face mask according to claim 2, it is characterised in that:Hospital gauze is chosen to be made Cover body, soft nose frame is set in the medial surface of cover body, the filter disc bag for setting top to open in soft nose frame bottom, the shape of filter disc bag with Isolate shape, the size matching of filter disc, isolation filter disc is placed into filter disc bag towards putting in the way of on the inside of cover body by sterilizing layer It is interior.
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CN111134392A (en) * 2020-01-14 2020-05-12 东南大学 Preparation method of reinforced filter mask
CN112080941A (en) * 2020-08-31 2020-12-15 中国科学院地球环境研究所 Preparation method of antibacterial and antiviral titanium dioxide/chitosan melt-blown fabric

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