CN101798754B - Method for preparing air purifying fabric by biomimetic synthesis low-temperature in-site secondary growth process - Google Patents
Method for preparing air purifying fabric by biomimetic synthesis low-temperature in-site secondary growth process Download PDFInfo
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- CN101798754B CN101798754B CN2010101340394A CN201010134039A CN101798754B CN 101798754 B CN101798754 B CN 101798754B CN 2010101340394 A CN2010101340394 A CN 2010101340394A CN 201010134039 A CN201010134039 A CN 201010134039A CN 101798754 B CN101798754 B CN 101798754B
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Abstract
The invention relates to a method for preparing an air purifying fabric by a biomimetic synthesis low-temperature in-site secondary growth process. The method comprises the following steps of: (1) mixing anhydrous alcohol, catalyst, distilled water and acetone, and adding silane to obtain a finishing liquor; (2) immersing the fabric into the finishing liquor, mixing, eluting and drying; (3) immersing the fabric into a pretreatment solution containing dimethyldiallylammonium chloride, PPV and sodium chloride, and drying; (4) adding titanium tetraisopropylate into isopropanol under the stirring condition in the inert atmosphere, adding a stabilizer, stirring, continuously adding the isopropanol, inhibitor and deionized water, stirring, and adding a wetting agent to obtain a sol; (5) immersing the fabric subject to treatment by step (3) in the sol to carry out in-site synthesis, and drying; (6) boiling in boiled water, and drying. The invention has the advantages of simple process and low cost, and is suitable for industrial production; the air purifying effect of the prepared material is good, the damage to fiber is small, and the material has antibacterial effect and no secondary pollution.
Description
Technical field
The invention belongs to the preparation field of air purifying fabric, particularly relate to the method that a kind of biomimetic synthesis low-temperature in-site secondary growth legal system is equipped with air purifying fabric.
Background technology
Along with the socioeconomic raising day by day that develops rapidly with living standard, people are also more and more stricter to the requirement of environmental quality.Government strengthens outdoor greening construction energetically and is intended to purify air, and absorbs to pollute.And the pollution level of room air generally is outdoor 2～10 times, under the extreme case even above 100 times.Discharging oil smoke, smoking etc. when the use of the inside fitting in house, office appliance and household electrical appliances, spraying insecticide, cooking all is the source of room air pollution, and wherein the concentration with formaldehyde, benzene series thing and ammonia is the highest again, human health is threatened maximum.The modern on average has 90% time live and work indoor, and an adult breathes more than 20,000 times every day, and amount of air drawn reaches 15～20m
3, inevitably absorbed a certain amount of toxic gas.Therefore, the harm that is caused by room air pollution has caused people's extensive concern, and the quality of IAQ has become influences the healthy key factor of people.
Some experts think, after " coal smoke type ", " photochemical fog type " polluted, it was the 3rd pollution period of sign that the modern is just getting into " room air pollution ".Along with the enhancing of health perception and sense of self-protection, to quality of life and indoor environment require increasingly highly, people begin to recognize that the quality that improves room air is the guarantee of healthy living and work.Past people's notice is placed on the air pollution of outdoor environment always and administers, but the nearly more than ten years, IAQ also becomes the problem that the whole world generally is concerned about day by day to the human body health affected.
Therefore, administer room air pollution and especially remove the focus that organic pollution in the room air becomes domestic and international scientific worker's research.At present, the method for removal indoor air pollutants mainly contains: physisorphtion, chemical neutralisation, photocatalytic method, negative aeroion method etc.But above method exist absorption saturated, make complicated, cost is high and defective such as the use of can not regenerating, and is unfavorable for sustainable development.Consider that flexible parent metal (fibrous material) has big, the easy machine-shaping of surface area, enrichment pollutant and dilution catabolite property as carrier; Photochemical catalyst is loaded on the flexible parent metal preparation flexible air purifying material can effectively improve the ability of air cleaning, and with low cost.The preparation method has at present: padding method and coating.These two kinds of methods exist bonded dose of coating of photochemical catalyst, and serious agglomeration, catalytic efficiency are low, flexible parent metal is prone to problems such as photooxidative degradation.Owing to the flexible parent metal non-refractory, limited photochemical catalyst and be deposited on the use of carrying out the crystal formation conversion method on the flexible parent metal again.
Summary of the invention
Technical problem to be solved by this invention provides the method that a kind of biomimetic synthesis low-temperature in-site secondary growth legal system is equipped with air purifying fabric, and this method is simple, and cost is low, is suitable for suitability for industrialized production; The material good air purification effect that makes, and effectively prevented TiO
2Damage problem to fabric has antibacterial effect concurrently, and non-secondary pollution can use for a long time.
A kind of biomimetic synthesis low-temperature in-site secondary growth legal system of the present invention is equipped with the method for air purifying fabric, comprising:
(1) with 500～800ml absolute ethyl alcohol, 0.5～2.5g catalyst, 200～500ml distilled water and 100～200ml acetone evenly mix, and dropwise add 20～50ml silane subsequently, obtain the anti-oxidant dressing liquid of bionical protection;
(2) with textile impregnation in above-mentioned finisher solution, 200～400rpm takes out after at room temperature continue stirring 4～8h, with distilled water and ethanol drip washing, 100～130 ℃ of oven dry;
(3), remove excessive electrolyte on the fabric with deionized water again, oven dry with the 5～15min in pretreatment solution of the textile impregnation after the above-mentioned processing; Said pretreatment solution is that mass fraction is 1～3% dimethyl diallyl ammonium chloride, 0.5～1% gather styrene, 20～30% sodium chloride, and all the other are water;
(4) under inert environments; 0.02～0.15mol titanium tetraisopropylate is slowly joined under stirring action in 40～80ml isopropyl alcohol, add 0.01～0.08mol stabilizing agent again, 200～500rpm stirs 2～3min; Continuing then to add 40～80ml volume ratio is (40-80): (3-4): 1 isopropyl alcohol, inhibitor and deionized water mixed liquor; Stir 20～60min, add the wetting agent of relative fabric weight 2%, obtain the low temperature precursor sol;
(5) the fabric face original position is synthetic
To be impregnated into the synthetic 1～2min of original position in step (4) colloidal sol through step (3) fabric treated,, dry 4～5min down at 90～95 ℃ then afterwards at 65～70 ℃ of following vacuum dryings;
(6) fabric after the above-mentioned oven dry is handled 1～2h in boiling water,, promptly get 40～50 ℃ of oven dry.
Silane in the said step (1) is 3-glycidol propyl ether methoxy silane, octyl group trimethoxy silane or phenyltrimethoxysila,e.
Catalyst in the said step (1) is ammonium chloride, ammonium sulfate, ammonium molybdate, ammonium carbonate, carbonic hydroammonium, ammonium hydrogen phosphate or ammonium phosphate.
Fabric in the said step (2) is non-weaving cloth, woven cloth or knitted cloth.
The fiber of said fabric is selected from one or both blend fibres in cotton fiber, polyimide fiber, NACF, polyester fiber, polypropylene fibre, bamboo fibre, glass fibre, viscose, silk fiber, flax fibre, wool fibre, soybean fiber, milk protein fiber, the nylon fibre.
Inhibitor in the said step (4) is hydrochloric acid, nitric acid, sulfuric acid or acetic acid.
Stabilizing agent in the said step (4) is diethylamine, triethylamine or triethanolamine.
Wetting agent in the said step (4) is Qu Latong 100 or Tween 80.
The air purifying fabric of the present invention's preparation can be applicable to interior decoration fields such as submarine, hospital ward, automotive interior trim, interior of aircraft decoration, has broad application prospects and market prospects.
The present invention is directly through arrangement anti-photooxidation protective layer on fabric, and the synthetic photochemical catalyst of original position on fabric is realized the conversion of photochemical catalyst crystal formation in boiling water then, the synthetic flexible air purifying fabric of preparation low-temperature in-site.
The present invention on fabric, had both solved the dust pollution question of photochemical catalyst when air cleaning with the semi-conductor nano particles growth in situ, can avoid the problem of photochemical catalyst reunion decrease in efficiency on flexible parent metal again; The photo-catalyst film of flexible air purifying fabric face has high-hydrophilic, has powerful oxidability, and the oxidable pollutant that falls the surface keeps self cleaning, has antibacterial effect simultaneously concurrently, and harmful microorganism is effectively killed.Flexible fabric can pass through the photocatalytic degradation toxic gas under visible light, and it is become nonpoisonous and tasteless material.
Beneficial effect
(1) preparation method of the present invention is simple, cost is low, does not increase new equipment, is easy to suitability for industrialized production;
(2) the fibrous raw material source is wide, is prone to be processed into different shape, and is easy to use;
(3) the material fabric gas good purification that makes of the present invention, and effectively prevented TiO
2Damage problem to fabric has antibacterial effect concurrently, and non-secondary pollution can use for a long time.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in the restriction scope of the present invention.Should be understood that in addition those skilled in the art can do various changes or modification to the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
(1) preparation of anti-oxidant dressing liquid
With the 500ml absolute ethyl alcohol, 0.5g ammonium chloride, 200ml distilled water and 100ml acetone evenly mix, and dropwise add 20ml 3-glycidol propyl ether methoxy silane subsequently, obtain the anti-oxidant dressing liquid of bionical protection;
(2) wool fabric anti-photooxidation protection arrangement
Wool fabric impregnated in the above-mentioned finisher solution, and 200rpm takes out after at room temperature continuing to stir 4h, with distilled water and ethanol drip washing, 100 ℃ of oven dry;
(3) the wool fabric surface preparation after the anti-photooxidation protection arrangement
Wool fabric after the above-mentioned processing impregnated in 5min in the pretreatment solution, remove excessive electrolyte with the deionized water rinsing fabric again, oven dry; Said pretreatment solution is that mass fraction is 1% dimethyl diallyl ammonium chloride, 0.5% gather styrene, 20% sodium chloride, and all the other are water;
(4) preparation of low temperature presoma
Under inert environments; The 0.02mol titanium tetraisopropylate is slowly joined under stirring action in the 40ml isopropyl alcohol, add the 0.01mol diethylamine again, 200rpm stirs 2min; Continuation adding 40ml volume ratio is 40: 3: 1 isopropyl alcohol, hydrochloric acid and a deionized water mixed liquor then; Stir 20min, add relative fabric and weigh 2% Qu Latong 100, obtain the low temperature precursor sol;
(5) the wool fabric surface in situ is synthetic
To be impregnated into 1min in the above-mentioned low temperature precursor sol through pretreated wool fabric,, dry 4min down at 90 ℃ then afterwards at 65 ℃ of following vacuum dryings;
(6) post processing of compound air purification wool fabric
Wool fabric after the oven dry is handled 2h in 100 ℃ of boiling water, 50 ℃ of oven dry, obtain the compound air purification wool fabric.
Composite air purifying function wool fabric and common activated carbon air purifying fabric that the present invention is made are respectively charged in the air purifier of same model; To under identical conditions: comprise the space; Harmful gas concentration, time compare test, and its result is following:
Embodiment 2
(1) preparation of anti-oxidant dressing liquid
With the 600ml absolute ethyl alcohol, 2g octyl group trimethoxy silane, 500ml distilled water and 200ml acetone evenly mix, and dropwise add 50ml silane subsequently, obtain the anti-oxidant dressing liquid of bionical protection;
(2) COTTON FABRIC anti-photooxidation protection arrangement
COTTON FABRIC impregnated in the above-mentioned finisher solution, and 400rpm takes out after at room temperature continuing to stir 8h, with distilled water and ethanol drip washing, 130 ℃ of oven dry;
(3) the surface of cotton fabric preliminary treatment after the anti-photooxidation protection arrangement
Above-mentioned cotton fabric processed impregnated in 15min in the pretreatment solution, remove excessive electrolyte with the deionized water rinsing fabric again, oven dry; Said pretreatment solution is that mass fraction is 3% dimethyl diallyl ammonium chloride, 1% gather styrene, 30% sodium chloride, and all the other are water;
(4) preparation of low temperature presoma
Under inert environments; The 0.15mol titanium tetraisopropylate is slowly joined under stirring action in 40～80ml isopropyl alcohol, add the 0.08mol triethylamine again, 500rpm stirs 3min; Continuation adding 80ml volume ratio is 80: 4: 1 isopropyl alcohol, sulfuric acid and a deionized water mixed liquor then; Stir 60min, add relative fabric and weigh 2% Tween 80, obtain the low temperature precursor sol;
(5) the surface of cotton fabric original position is synthetic
To be impregnated into 2min in the above-mentioned low temperature precursor sol through pretreated COTTON FABRIC,, dry 5min down at 95 ℃ then afterwards at 65 ℃ of following vacuum dryings;
(6) post processing of compound air purification COTTON FABRIC
COTTON FABRIC after the oven dry is handled 1h in 100 ℃ of boiling water, 50 ℃ of oven dry, obtain the compound air purification COTTON FABRIC.
Composite air purifying function COTTON FABRIC and common activated carbon air purifying material that the present invention is made are respectively charged in the air purifier of same model; To under identical conditions: comprise the space; Harmful gas concentration, time compare test, and its result is following:
Embodiment 3
(1) preparation of anti-oxidant dressing liquid
With the 700ml absolute ethyl alcohol, the 2.5g ammonium hydrogen phosphate, 400ml distilled water and 200ml acetone evenly mix, and dropwise add the 50ml phenyltrimethoxysila,e subsequently, are configured to the anti-oxidant dressing liquid of bionical protection;
(2) sodolin anti-photooxidation protection arrangement
Sodolin impregnated in the above-mentioned finisher solution, and 300rpm takes out after at room temperature continuing to stir 5h, with distilled water and ethanol drip washing, 120 ℃ of oven dry;
(3) the sodolin surface preparation after the anti-photooxidation protection arrangement
Sodolin after the above-mentioned processing impregnated in 15min in the pretreatment solution, remove excessive electrolyte with the deionized water rinsing fabric again, oven dry; Said pretreatment solution is that mass fraction is 3% dimethyl diallyl ammonium chloride, 0.5～1% gather styrene, 30% sodium chloride, and all the other are water;
(4) preparation of low temperature presoma
Under inert environments; The 0.15mol titanium tetraisopropylate is slowly joined under stirring action in 40～80ml isopropyl alcohol, add the 0.08mol triethanolamine again, 200rpm stirs 3min; Continuation adding 40ml volume ratio is 40: 3: 1 isopropyl alcohol, acetic acid and a deionized water mixed liquor then; Stir 30min, add relative fabric and weigh 2% Tween 80, obtain the low temperature precursor sol;
(5) the sodolin surface in situ is synthetic
To be impregnated into 2min in the above-mentioned low temperature precursor sol through pretreated sodolin,, dry 4min down at 90 ℃ then afterwards at 70 ℃ of following vacuum dryings;
(6) post processing of compound air purification sodolin
Sodolin after the oven dry is handled 2h in 100 ℃ of boiling water, 50 ℃ of oven dry, obtain the compound air purification sodolin.
Air self-purification function sodolin and common activated carbon air purifying material that the present invention is made are respectively charged in the air purifier of same model; To under identical conditions: comprise the space; Harmful gas concentration, time compare test, and its result is following:
Claims (4)
1. a biomimetic synthesis low-temperature in-site secondary growth legal system is equipped with the method for air purifying fabric, comprising:
(1) with 500～800ml absolute ethyl alcohol, 0.5～2.5g catalyst, 200～500ml distilled water and 100～200ml acetone evenly mix, and dropwise add 20～50ml silane subsequently, obtain the anti-oxidant dressing liquid of bionical protection; Wherein catalyst is ammonium chloride, ammonium sulfate, ammonium molybdate, ammonium carbonate, carbonic hydroammonium, ammonium hydrogen phosphate or ammonium phosphate;
(2) with textile impregnation in above-mentioned finisher solution, 200～400rpm takes out after at room temperature continue stirring 4～8h, with distilled water and ethanol drip washing, 100～130 ℃ of oven dry;
(3), remove excessive electrolyte on the fabric with deionized water again, oven dry with the 5～15min in pretreatment solution of the textile impregnation after the above-mentioned processing; Said pretreatment solution is that mass fraction is 1～3% dimethyl diallyl ammonium chloride, 0.5～1% gather styrene, 20～30% sodium chloride, and all the other are water;
(4) under inert environments; 0.02～0.15mol titanium tetraisopropylate is slowly joined under stirring action in 40～80ml isopropyl alcohol, add 0.01～0.08mol stabilizing agent again, 200～500rpm stirs 2～3min; Continuing then to add 40～80ml volume ratio is (40-80): (3-4): 1 isopropyl alcohol, inhibitor and deionized water mixed liquor; Stir 20～60min, add the wetting agent of relative fabric weight 2%, obtain the low temperature precursor sol; Wherein inhibitor is hydrochloric acid, nitric acid, sulfuric acid or acetic acid, and stabilizing agent is diethylamine, triethylamine or triethanolamine, and wetting agent is Qu Latong 100 or Tween 80;
(5) the fabric face original position is synthetic
To be impregnated into the synthetic 1～2min of original position in step (4) colloidal sol through step (3) fabric treated,, dry 4～5min down at 90～95 ℃ then afterwards at 65～70 ℃ of following vacuum dryings;
(6) fabric after the above-mentioned oven dry is handled 1～2h in boiling water,, promptly get 40～50 ℃ of oven dry.
2. a kind of biomimetic synthesis low-temperature in-site secondary growth legal system according to claim 1 is equipped with the method for air purifying fabric, it is characterized in that: the silane in the said step (1) is 3-glycidol propyl ether methoxy silane, octyl group trimethoxy silane or phenyltrimethoxysila,e.
3. a kind of biomimetic synthesis low-temperature in-site secondary growth legal system according to claim 1 is equipped with the method for air purifying fabric, it is characterized in that: the fabric in the said step (2) is non-weaving cloth, woven cloth or knitted cloth.
4. a kind of biomimetic synthesis low-temperature in-site secondary growth legal system according to claim 3 is equipped with the method for air purifying fabric, it is characterized in that: the fiber of said fabric is selected from one or both blend fibres in cotton fiber, polyimide fiber, NACF, polyester fiber, polypropylene fibre, bamboo fibre, glass fibre, viscose, silk fiber, flax fibre, wool fibre, soybean fiber, milk protein fiber, the nylon fibre.
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| CN2010101340394A CN101798754B (en) | 2010-03-26 | 2010-03-26 | Method for preparing air purifying fabric by biomimetic synthesis low-temperature in-site secondary growth process |
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| CN2010101340394A CN101798754B (en) | 2010-03-26 | 2010-03-26 | Method for preparing air purifying fabric by biomimetic synthesis low-temperature in-site secondary growth process |
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| CN101798754B true CN101798754B (en) | 2012-07-18 |
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| CN102634977B (en) * | 2012-04-24 | 2013-06-05 | 南通大学 | Method for preparing anti-bacterial fibers and fabrics by in-situ complexometry |
| CN102787497B (en) * | 2012-09-05 | 2014-05-14 | 陕西科技大学 | Method for preparing novel quaternary ammonium salt copolymer/nanometer ZnO composite antimicrobial for fabric |
| CN103451919B (en) * | 2013-09-04 | 2015-08-12 | 东华大学 | A kind of preparation method of civil aviation instrument special-purpose multifunctional air purified functional textile |
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