CN106386849A - Slow release type solid chlorine dioxide formaldegyde scavenging agent and preparing method thereof - Google Patents
Slow release type solid chlorine dioxide formaldegyde scavenging agent and preparing method thereof Download PDFInfo
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Abstract
The invention discloses a slow release type solid chlorine dioxide formaldegyde scavenging agent of and a preparing method thereof. The scavenging agent comprises a stable chlorine dioxide A system and an activating agent B system which provides conditions for the stable chlorine dioxide A system to release the chlorine dioxide, wherein a mass ratio of the A system to the B system is 1 : 0.5-2; the preparing method comprises the steps of preparing the stable chlorine dioxide A system and the activating agent B system respectively, mixing the systems uniformly, and conducting unitary packaging, vacuum seal and storing; the slow release type solid chlorine dioxide formaldegyde scavenging agent has the advantages of being uniform in reacting speed, strong in the stability of the activating agent, controllable in releasing speed and the like. Adoption of synergistic effects of the stable chlorine dioxide A system and the activating system B can not only effectively reduce indoor formaldehyde content, but also continuously slowly release chlorine dioxide gas controllably, and has a long action time so that air cleaning can be maintained enduringly.
Description
Technical field
The invention belongs to scavenger field, more particularly, to a kind of slow-release solid chlorine dioxide formaldehyde scavenger and its preparation
Method.
Background technology
Formaldehyde serious harm health, is in second, by the world on China's toxic chemical priority acccess control list
Health organization (WHO) and international cancer research institution (IARC) are defined as I class carcinogen.With regard to Formaldehyde Pollution of Indoor Air problem
Various circles of society are caused greatly to pay close attention to.In recent years, the event that is detrimental to health of air pollution causing because of interior decoration is frequent
Occur, especially pollutant " formaldehyde ", be confirmed to be a kind of strong carcinogen, the main harm of formaldehyde shows as to mucocutaneous
Stimulation, when formaldehyde reaches finite concentration indoors, people just has sense of discomfort, wherein, more than 0.08m3Concentration of formaldehyde can
Cause furious, ophthalmic pruritus, throat discomfort or pain, hoarseness, sneeze, uncomfortable in chest, asthma, dermatitis etc..Newly-decorated room formaldehyde
Content is higher, is the main inducing of numerous diseases.However, according to investigations, the majority most family in city of China formaldehyde in indoor air
Content all exceeded, therefore, efficiently remove indoor formaldehyde particularly important.
Mainly there are absorption method, photocatalytic method, precious metal catalyst method to the administering method of formaldehyde in indoor air at present.But
Either absorption method, photocatalytic method or precious metal catalyst method all do not reach satisfied effect.Absorption method is often because of adsorbent capacity
Little and adsorb non-selectivity, low concentration pollutant cannot effectively be removed substantially, and be desorbed easily cause secondary pollution；Photocatalytic method
Need just can carry out under ultraviolet irradiation condition, there is sizable use limitation, and transformation efficiency is low；Noble metal catalyst
Catalyst poisoning phenomenon easily occurs, makes catalyst failure, and because Precious Metals Resources are rare, expensive, limit it in room
Warm catalysis oxidation removes the promotion and application in formaldehyde catalyst.
Chlorine dioxide is a kind of internationally recognized efficient, nontoxic, quick, wide spectrum disinfection sanitizer, and it is to antibacterial, true
Bacterium, virus have 100% sterilization effect, and can have the degraded of highly significant to the formaldehyde of in the air by its strong oxidation
Effect, thus become the air clearing product of new generation of superior performance.
Absorbent-type and response type Chlorine dioxide production slowly, constantly can discharge a certain amount of chlorine dioxide,
Can be used for sterilizing, deodorizing and fresh-keeping, remove the aspects such as formaldehyde.Stable ClO 2 solution is typically colourless (or yellowish
Color), the transparency liquid of odorless, nonflammable, non-volatile, steady quality, be not easily decomposed, these advantages decide it commercially
Application status.Stable ClO 2 solution is activated using being front both needed to acid adding in the market, is formed necessarily dense after activation
Degree ClO 2 solution is again through being sprayed to the place of needs effect, but chlorine dioxide is extremely unstable, particularly under light illumination,
Easily decompose, lose oxidation susceptibility it is impossible to lasting play the effect removing formaldehyde.In reality, a lot of places formaldehyde is to continue
Volatilization, need lasting chlorine dioxide effect, keep air clean for a long time with this, action time requires longer.
Therefore, now need a kind of chlorine dioxide formaldehyde scavenger class product badly to continue, controllably discharge chlorine dioxide
Body, thus meet the long-acting demand removing formaldehyde.
Content of the invention
Goal of the invention：The first object of the present invention is to provide one kind can continue slow and controllably discharge chlorine dioxide
The slow-release solid chlorine dioxide formaldehyde scavenger of body；The second object of the present invention is to provide this slow-release solid chlorine dioxide first
The preparation method of aldehyde scavenger.
Technical scheme：The slow-release solid chlorine dioxide formaldehyde scavenger of the present invention, including stability chlorine dioxide A system
And the activator B system for stability chlorine dioxide A system release chlorine dioxide offer condition, the quality of this A system and B system
Than for 1:0.5～2；Wherein, stability chlorine dioxide A system includes adsorbing medium, the stability being supported on this adsorbing medium
Chlorine dioxide active component and the covering coating described stability chlorine dioxide active component, described activator B system includes
Adsorbing medium and be supported on the mixture on this adsorbing medium.
Furtherly, in stability chlorine dioxide A system adsorbing medium and stability chlorine dioxide active component weight
Portion rate is 100:0.5～5；In activator B system, adsorbing medium and the ratio of weight and number of mixture are 100：1.5～10, its
In, mixture includes acidic materials 50～80%, hygroscopic agent 3～47%, water-retaining agent 3～30% by mass percentage.Preferably
, the mass ratio of A system and B system is 100:0.8～1.4.
Furtherly, in the stability chlorine dioxide A system of the present invention, stability chlorine dioxide active component includes surely
The mixed solution of the mixed solution of qualitative ClO 2 solution, sodium chlorite and sodium hydroxide, sodium chlorite and sodium carbonate, sub- chlorine
The mixed solution of mixed solution, sodium chlorite and sodium hydroxide and sodium carbonate of sour sodium and potassium carbonate, sodium chlorite and hydroxide
The mixed solution of the mixed solution of sodium and potassium carbonate, sodium chlorite and EDTA, sodium chlorite and sodium bicarbonate and sodium carbonate mixed
Close the mixed solution of solution, sodium chlorite and sodium bicarbonate and potassium carbonate；Covering includes hydroxypropyl methyl cellulose, ethoxy
At least one in cellulose, Polyvinylpyrrolidone, Polyethylene Glycol.
In the activator B system of the present invention, acidic materials include oxalic acid, citric acid, tartaric acid, in malic acid at least one
Kind；Hygroscopic agent includes calcium oxide, anhydrous calcium chloride, anhydrous magnesium sulfate, at least one in anhydrous sodium sulfate；Water-retaining agent includes gathering
At least one in sodium acrylate, polyacrylamide, polyvinyl alcohol, poly(ethylene oxide).
Furtherly, in the stability chlorine dioxide A system of the present invention and activator B system, the adsorbing medium of employing
Including at least one in cordierite, alumina balls, kieselguhr, pelelith, mullite, Maifanitum, meerschaum.
The method that the present invention prepares slow-release solid chlorine dioxide formaldehyde scavenger comprises the steps：
(1) prepare stability chlorine dioxide A system：By weight adsorbing medium be impregnated in stability chlorine dioxide to live
Property component solution in 5～80min, subsequently take out and dry in the shade, be dried, then in one layer of covering of its Surface coating, you can；
(2) prepare activator B system：By weight percent acidic materials, hygroscopic agent, water-retaining agent and water are configured to mix
After solution, by ratio of weight and the number of copies adsorbing medium be impregnated in 5～60min in this mixed solution, subsequently take out and dry in the shade, be dried, that is,
Can；
(3) unitary packaging, vacuum after in mass ratio stability chlorine dioxide A system being mixed homogeneously with activator B system
Sealing preserve, you can.
Beneficial effect：Compared with prior art, the remarkable advantage of the present invention is：This slow-release solid chlorine dioxide formaldehyde is clear
Except agent has the advantages that response speed is uniform, activator stability is strong, rate of release is controlled, using stability chlorine dioxide A body
The synergism of both system and activator B system, can not only be effectively reduced the content of formaldehyde of interior, and can persistently delay
Slowly, controllably discharge chlorine dioxide, long action time is such that it is able to enduringly keep air cleaning.Additionally, its activearm
Divide stability chlorine dioxide A system outer layer, using high-molecular coating agent, active component is coated on centre, completely cut off activator B body
There is material effect with active component in system and external environment, improve the stability of chlorine dioxide, have safe, effective group
The advantages of divide content high；Activator B system adopts hygroscopic agent, water-retaining agent, and both synergism provide for the generation of chlorine dioxide
Essential condition.Meanwhile, in the preparation, unitary bag after stability chlorine dioxide A system being mixed homogeneously with activator B system
Dress, vacuum sealing preserves it is not necessary to use double-component, and product is easy to use, and the suitability is wide, in air clearing product, removes formaldehyde
Product, material for air purification, except formaldehyde materials, air cleaning filtrate and except can be used widely in formaldehyde filtrate.
Specific embodiment
With reference to embodiment, technical scheme is described further.
Embodiment 1
(1) 1 part of Maifanitum be impregnated in 1.5 parts of sodium chlorite and 30min in sodium carbonate mixture, in this mixed solution
Sodium chlorite mass fraction is 10%, sodium carbonate is 3%, balance of water；Take out after dipping and dry in the shade under the conditions of room temperature, lucifuge,
After 36h being dried under the conditions of 40 DEG C, more coated machine is coated with Polyvinylpyrrolidone, you can is obtained and has loaded stability
Chlorine dioxide active component and the composite of external sheath Polyvinylpyrrolidone, i.e. stability chlorine dioxide A system, this body
In system, the weight of Maifanitum and stability chlorine dioxide active component (sodium chlorite and sodium carbonate) ratio is for 100:3；
(2) 1 part of alumina balls be impregnated in 1.5 parts of mixing by citric acid, malic acid, calcium chloride, polyvinyl alcohol water-soluble
30min in liquid, in this mixed aqueous solution the mass fraction of citric acid be 10%, malic acid be 5%, calcium chloride be 2%, polyethylene
Alcohol is 3%, balance of water；Take out after dipping and dry in the shade under the conditions of room temperature, lucifuge, be dried 48 hours under the conditions of 80 DEG C, you can
Prepared activator B system, alumina balls and mixture (citric acid, malic acid, calcium chloride, polyethylene in this activator B system
Alcohol) ratio of weight and number be 100:5, mixture citric acid 40%, malic acid 20%, calcium chloride 20%, polyvinyl alcohol 20%；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:1 mix homogeneously
After be placed in non-woven fabrics packaging in, 60g often wraps, you can the slow-release solid chlorine dioxide formaldehyde scavenger of the prepared present invention.
In this embodiment by replaceable to sodium chlorite and sodium carbonate mixture become sodium chlorite and potassium carbonate mixed solution,
Sodium chlorite and sodium hydroxide mixed solution.
In the present embodiment, the raw material of employing is all commercially available obtains.
Performance detection：To 3m3It is passed through finite concentration formaldehyde gases in airtight experiment bin, open gas stirring device, stable
Going out content of formaldehyde in experiment bin by sample detecting is 0.96mg/m3, the slow-release solid titanium dioxide that will obtain in 3 bag examples 1
Chlorine formaldehyde scavenger is placed in above-mentioned experiment bin, is 0.07mg/m through content of formaldehyde in 1.5 hours sample detecting experiment bin3, warp
In 2.5 hours sample detecting experiment bin, content of formaldehyde is 0.03mg/m3, through content of formaldehyde in 3 hours sample detecting experiment bin it is
0.00mg/m3.It follows that the slow-release solid chlorine dioxide formaldehyde scavenger of the present invention can enduringly distribute chlorine dioxide
Gas.
Embodiment 2
(1) 1 part of pelelith be impregnated in 1.5 parts of sodium chlorite and middle 50min in sodium hydroxide and sodium carbonate mixture,
In this mixed solution, the mass fraction of sodium chlorite is 10%, and sodium hydroxide is 0.15%, sodium carbonate is 2%, balance of water；Leaching
Take out after stain and dry in the shade under the conditions of room temperature, lucifuge, after 48h being dried under the conditions of 35 DEG C, more coated machine is fine with hydroxypropyl methyl
Dimension element is coated, you can is obtained and has loaded stability chlorine dioxide active component and external sheath hydroxypropyl methyl cellulose
Composite, i.e. stability chlorine dioxide A system, Maifanitum and stability chlorine dioxide active component (chlorous acid in this system
Sodium and sodium hydroxide and sodium carbonate) weight ratio for 100:0.5；
(2) 1 part of alumina balls be impregnated in 1.5 parts by citric acid, calcium chloride, the mixed aqueous solution of polyvinyl alcohol
50min, in this mixed aqueous solution the mass fraction of citric acid be 15%, calcium chloride be 2%, polyvinyl alcohol be 3%, balance of
Water；Take out after dipping and dry in the shade under the conditions of room temperature, lucifuge, under the conditions of 85 DEG C, 45h is dried, you can prepared activator B system, should
In activator B system, alumina balls and the ratio of weight and number of mixture (citric acid, calcium chloride, polyvinyl alcohol) are 100:1.5, mix
Compound citric acid 75%, calcium chloride 10%, polyvinyl alcohol 15%；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:1.4 mixing are all
It is placed in after even in packing, you can the slow-release solid chlorine dioxide formaldehyde scavenger of the prepared present invention.
In this embodiment, sodium chlorite and sodium hydroxide and sodium carbonate mixture can be replaced sodium chlorite and hydroxide
Sodium and potassium carbonate mixed solution.
Performance detection：Select between one the room after just fitting up as experimental subject, 12 squares of room area is high 2.8 meters, by room
Between door and window close 1 hour post-sampling and detect that in room, content of formaldehyde is 0.63mg/m3, will in 300g example 2 be obtained slow release
Type solid chlorine dioxide formaldehyde scavenger is placed in the room after above-mentioned door and window is closed 1 hour, through in 6 hours sample detecting rooms
Content of formaldehyde is 0.11mg/m3, it is 0.03mg/m through content of formaldehyde in 10 hours sample detecting rooms3.It follows that the present invention
Slow-release solid chlorine dioxide formaldehyde scavenger can enduringly distribute chlorine dioxide.
Embodiment 3
(1) 1 part of pelelith be impregnated in 1.5 parts of sodium chlorite and middle 25min in sodium carbonate mixture, this mixed solution
The mass fraction of middle sodium chlorite is 10%, sodium carbonate is 2.5%, balance of water；Take out after dipping under the conditions of room temperature, lucifuge
After drying in the shade, 48h being dried under the conditions of 40 DEG C, more coated machine is coated with hydroxypropyl methyl cellulose, you can load is obtained
The composite of stability chlorine dioxide active component and external sheath hydroxypropyl methyl cellulose, i.e. stability chlorine dioxide
A system, in this system, the weight of Maifanitum and stability chlorine dioxide active component (sodium chlorite and sodium carbonate) ratio is for 100:
5；
(2) 1 part of kieselguhr be impregnated in 1.5 parts by citric acid, calcium chloride, the mixed aqueous solution of poly(ethylene oxide)
25min, in this mixed aqueous solution the mass fraction of citric acid be 10%, calcium chloride be 2.5%, poly(ethylene oxide) be 3%, surplus
For water；Take out after dipping and dry in the shade under the conditions of room temperature, lucifuge, under the conditions of 75 DEG C, 55h is dried, you can prepared activator B system,
In this activator B system, kieselguhr and the ratio of weight and number of mixture (citric acid, calcium chloride, poly(ethylene oxide)) are 100:10,
Mixture citric acid 64.5%, calcium chloride 16%, polyvinyl alcohol 19.5%；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:1.2 mixing are all
After even, it is placed in slow release packing box, every box net content 100g, you can the slow-release solid chlorine dioxide formaldehyde of the prepared present invention is clear
Except agent.
Performance detection：Select the three railway carriage or compartment cars newly purchased as experimental subject, adopt after door and window are closed 16 hours
Sample detects that in car, content of formaldehyde is 0.37mg/m3, the slow-release solid chlorine dioxide formaldehyde removing that will obtain in 2 box examples 3
Agent is placed in the car after above-mentioned door and window is closed 16 hours, is 0.13mg/ through content of formaldehyde in 3 hours sample detecting cars
m3, it is 0.04mg/m through content of formaldehyde in 6 hours sample detecting cars3, through content of formaldehyde in 12 hours sample detecting cars
For 0.01mg/m3.It follows that the slow-release solid chlorine dioxide formaldehyde scavenger of the present invention can enduringly distribute titanium dioxide
Chlorine body.
Comparative example 1
(1) 1 part of kieselguhr be impregnated in 1.5 parts of sodium chlorite and sodium carbonate mixture, this mixed solution Central Asia chlorine
The mass fraction of sour sodium is 7.5%, sodium carbonate is 1.0%, balance of water；Take out after dipping dry in the shade under the conditions of room temperature, lucifuge,
After 48h being dried under the conditions of 40 DEG C, more coated machine is coated with hydroxyethyl cellulose, you can is obtained and has loaded stability two
Chlorine monoxid active component and the composite of external sheath hydroxyethyl cellulose, i.e. stability chlorine dioxide A system；
(2) 1 part of kieselguhr be impregnated in 1.5 parts by tartaric acid, the mixed aqueous solution of poly(ethylene oxide), this mixing is water-soluble
In liquid, the mass fraction of this mixed aqueous solution mesotartaric acid is 10%, poly(ethylene oxide) is 3%, balance of water；Take out after dipping
Dry in the shade under the conditions of room temperature, lucifuge, under the conditions of 80 DEG C, 20h is dried, you can prepared activator B system；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:1.2 mixing are all
After even, it is placed in slow release packing box, every box net content 100g, you can the slow-release solid chlorine dioxide formaldehyde of the prepared present invention is clear
Except agent.
Performance detection：Select the three railway carriage or compartment cars newly purchased as experimental subject, adopt after door and window are closed 16 hours
Sample detects that in car, content of formaldehyde is 0.42mg/m3, the slow-release solid chlorine dioxide formaldehyde removing that will obtain in 2 box examples 4
Agent is placed in the car after above-mentioned door and window is closed 16 hours, is 0.38mg/ through content of formaldehyde in 3 hours sample detecting cars
m3, it is 0.27mg/m through content of formaldehyde in 6 hours sample detecting cars3, through content of formaldehyde in 12 hours sample detecting cars
For 0.12mg/m3, it is 0.02mg/m through content of formaldehyde in 30 hours sample detecting cars3.
By this test, although formaldehyde finally can be removed to by the formaldehyde scavenger of this embodiment preparation
0.02mg/m3, but activating velocity is slower, removes the slow of formaldehyde speed, and the slow-release solid chlorine dioxide formaldehyde removing of the present invention
Agent can enduringly distribute chlorine dioxide, removes formaldehyde speed fast.
Comparative example 2
(1) 1 part of Maifanitum be impregnated in 1.5 parts of sodium chlorite and sodium carbonate mixture, this mixed solution Central Asia chlorine
The mass fraction of sour sodium is 10%, sodium carbonate is 2.0%, balance of water；Take out after dipping dry in the shade under the conditions of room temperature, lucifuge,
After 48h being dried under the conditions of 40 DEG C, more coated machine is coated with hydroxypropyl methyl cellulose, you can is obtained to have loaded and stablizes
Property chlorine dioxide active component and the composite of external sheath hydroxypropyl methyl cellulose, i.e. stability chlorine dioxide A system；
(2) 1 part of pelelith be impregnated in 1.5 parts by malic acid, the mixed aqueous solution of anhydrous magnesium sulfate, this mixing is water-soluble
In liquid, the mass fraction of malic acid is 15%, anhydrous magnesium sulfate 3%, balance of water；Take out after dipping under the conditions of room temperature, lucifuge
Dry in the shade, under the conditions of 80 DEG C, 30h is dried, you can prepared activator B system；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:0.8 mixing is all
After even, it is placed in slow release packing box, every box net content 100g, you can the slow-release solid chlorine dioxide formaldehyde of the prepared present invention is clear
Except agent.
Performance detection：To 3m3It is passed through finite concentration formaldehyde gases in airtight experiment bin, open gas stirring device, stable
Going out content of formaldehyde in experiment bin by sample detecting is 0.81mg/m3, the slow-release solid titanium dioxide that will obtain in 2 box examples 5
Chlorine formaldehyde scavenger is placed in above-mentioned airtight experiment bin, is 0.59mg/m through content of formaldehyde in 1 hour sample detecting experiment bin3,
It is 0.24mg/m through content of formaldehyde in 3 hours sample detecting experiment bin3, through content of formaldehyde in 6 hours sample detecting experiment bin it is
0.16mg/m3, it is 0.07mg/m through content of formaldehyde in 8 hours sample detecting experiment bin3.
By this test, the activating velocity of this embodiment is fast, and chlorine dioxide distributes comparatively fast, and the spacetabs type of the present invention
Solid chlorine dioxide formaldehyde scavenger can enduringly distribute chlorine dioxide.
Embodiment 4
(1) 0.5 part of cordierite and 0.5 part of mullite be impregnated in the mixed solution of 1.5 parts of stable ClO 2 solutions
5min, in this mixed solution, the mass fraction of stable ClO 2 solution is 12% balance of water；Take out after dipping room temperature,
Dry in the shade under the conditions of lucifuge, after 36h being dried under the conditions of 40 DEG C, more coated machine is coated with Polyvinylpyrrolidone, you can
It is obtained and loaded stability chlorine dioxide active component and the answering of external sheath hydroxypropyl methyl cellulose and hydroxyethyl cellulose
Condensation material, i.e. stability chlorine dioxide A system, Maifanitum and stability chlorine dioxide active component (stability two in this system
Oxidation solutions of chlorine) weight ratio for 100:4；
(2) 1 part of meerschaum be impregnated in 1.5 parts by oxalic acid, tartaric acid, anhydrous calcium chloride, anhydrous sodium sulfate, polyacrylic acid
40min in sodium, the mixed aqueous solution of polyacrylamide, the mass fraction of this mixed aqueous solution mesoxalic acid is that 10%, tartaric acid is
5%th, anhydrous calcium chloride be 0.5%, anhydrous sodium sulfate be 1.5%, sodium polyacrylate be 1%, polyacrylamide be 1%, surplus
For water；Take out after dipping and dry in the shade under the conditions of room temperature, lucifuge, be dried 48 hours under the conditions of 80 DEG C, you can prepared activator B body
System, meerschaum and mixture (oxalic acid, tartaric acid, anhydrous calcium chloride, anhydrous sodium sulfate, polyacrylic acid in this activator B system
Sodium, polyacrylamide) ratio of weight and number be 100:4, mixture oxalic acid 30%, tartaric acid 20%, anhydrous calcium chloride 20%, no
Aqueous sodium persulfate 27%, sodium polyacrylate 1.5%, polyacrylamide 1.5%；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:0.8 mixing is all
It is placed in after even in non-woven fabrics packaging, 60g often wraps, you can the slow-release solid chlorine dioxide formaldehyde scavenger of the prepared present invention.
Embodiment 5
(1) 1 part of mullite be impregnated in the mixed solution 80min of 1.5 parts of sodium chlorite and EDTA, this mixed solution Central Asia
The mass fraction of sodium chlorate solution is 10%, EDTA is 3%, balance of water；Take out cloudy under the conditions of room temperature, lucifuge after dipping
Dry, after 36h being dried under the conditions of 40 DEG C, more coated machine is coated with Polyvinylpyrrolidone, you can is obtained and has loaded surely
Qualitative chlorine dioxide active component and the composite of external sheath Polyethylene Glycol, i.e. stability chlorine dioxide A system, this system
The weight of middle mullite and stability chlorine dioxide active component (sodium chlorite and EDTA) ratio is for 100:1.5；
(2) by 1 part of meerschaum impregnated in 1.5 parts by oxalic acid, tartaric acid, anhydrous magnesium sulfate, sodium polyacrylate mixing water
5min in solution, the mass fraction of this mixed aqueous solution mesoxalic acid is 10%, tartaric acid is 5%, anhydrous calcium chloride is 2.5%,
Sodium polyacrylate is 2%, balance of water；Take out after dipping and dry in the shade under the conditions of room temperature, lucifuge, be dried 48 under the conditions of 80 DEG C little
When, you can prepared activator B system, meerschaum and mixture in this activator B system (oxalic acid, tartaric acid, anhydrous magnesium sulfate,
Sodium polyacrylate) ratio of weight and number be 100:2.5, mixture oxalic acid 30%, tartaric acid 20%, anhydrous magnesium sulfate 20%, poly-
Sodium acrylate 30%；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:0.5 mixing is all
It is placed in after even in non-woven fabrics packaging, 60g often wraps, you can the slow-release solid chlorine dioxide formaldehyde scavenger of the prepared present invention.
Embodiment 6
(1) 1 part of meerschaum be impregnated in the mixed solution 40min of 1.5 parts of sodium chlorite and sodium bicarbonate and sodium carbonate, should
In mixed solution the mass fraction of sodium chlorite solution be 10%, sodium bicarbonate be 1%, sodium carbonate be 2%, balance of water；Leaching
Take out after stain and dry in the shade under the conditions of room temperature, lucifuge, after 36h being dried under the conditions of 40 DEG C, more coated machine polyvinylpyrrolidine
Ketone is coated, you can is obtained and has loaded stability chlorine dioxide active component and the composite of external sheath Polyethylene Glycol,
I.e. stability chlorine dioxide A system, mullite and stability chlorine dioxide active component (sodium chlorite and bicarbonate in this system
Sodium and sodium carbonate) weight than for 100:3.5；
(2) 1 part of meerschaum be impregnated in 1.5 parts by oxalic acid, anhydrous calcium chloride, the mixed aqueous solution of polyacrylamide
60min, the mass fraction of this mixed aqueous solution mesoxalic acid is 8%, anhydrous calcium chloride is 4%, and polyacrylamide is 2%, surplus
For water；Take out after dipping and dry in the shade under the conditions of room temperature, lucifuge, be dried 48 hours under the conditions of 80 DEG C, you can prepared activator B body
System, in this activator B system, meerschaum and the ratio of weight and number of mixture (oxalic acid, anhydrous calcium chloride, polyacrylamide) are
100:6, mixture oxalic acid 3%, polyacrylamide 17%；
(3) by the stability chlorine dioxide preparing respectively A system and activator B system in mass ratio 1:2 mix homogeneously
After be placed in non-woven fabrics packaging in, 60g often wraps, you can the slow-release solid chlorine dioxide formaldehyde scavenger of the prepared present invention.
The mixed solution of sodium chlorite and sodium bicarbonate and sodium carbonate can be replaced with sodium chlorite and carbon in this embodiment
Sour hydrogen sodium and the mixed solution of potassium carbonate.
The scavenger of embodiment 4-6 preparation is carried out the detection of formaldehyde removal effect and understands, it can not only be effectively reduced
Indoor content of formaldehyde, and can continue slow, controllably discharge chlorine dioxide, long action time is such that it is able to persistently
Ground keeps air cleaning.
Claims (10)
1. a kind of slow-release solid chlorine dioxide formaldehyde scavenger it is characterised in that：Including stability chlorine dioxide A system and be
Stability chlorine dioxide A system discharges chlorine dioxide provides the activator B system of condition, and the mass ratio of this A system and B system is
1:0.5～2；Wherein, the stability that described stability chlorine dioxide A system includes adsorbing medium, is supported on this adsorbing medium
Chlorine dioxide active component and the covering coating described stability chlorine dioxide active component, described activator B system includes
Adsorbing medium and be supported on the mixture on this adsorbing medium.
2. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 1 it is characterised in that：Described stability two
In chlorine monoxid A system, adsorbing medium and the ratio of weight and number of stability chlorine dioxide active component are 100：0.5～5.
3. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 1 and 2 it is characterised in that：Described stable
Property chlorine dioxide active component includes the mixed solution of stable ClO 2 solution, sodium chlorite and sodium hydroxide, chlorous acid
The mixed solution of mixed solution, sodium chlorite and potassium carbonate of sodium and sodium carbonate, sodium chlorite and sodium hydroxide and sodium carbonate
The mixed solution of the mixed solution of mixed solution, sodium chlorite and sodium hydroxide and potassium carbonate, sodium chlorite and EDTA, chlorous acid
The mixed solution of the mixed solution, sodium chlorite and sodium bicarbonate and potassium carbonate of sodium and sodium bicarbonate and sodium carbonate.
4. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 1 it is characterised in that：Described covering bag
Include hydroxypropyl methyl cellulose, hydroxyethyl cellulose, Polyvinylpyrrolidone, at least one in Polyethylene Glycol.
5. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 1 it is characterised in that：Described activator B
In system, adsorbing medium and the ratio of weight and number of mixture are 100:1.5～10；Wherein, mixture includes by mass percentage
Acidic materials 50～80%, hygroscopic agent 3～47% and water-retaining agent 3～30%.
6. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 5 it is characterised in that：Described acidic materials
Including at least one in oxalic acid, citric acid, tartaric acid, malic acid.
7. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 5 it is characterised in that：Described hygroscopic agent bag
Include calcium oxide, anhydrous calcium chloride, anhydrous magnesium sulfate, at least one in anhydrous sodium sulfate.
8. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 5 it is characterised in that：Described water-retaining agent bag
Include sodium polyacrylate, polyacrylamide, polyvinyl alcohol, at least one in poly(ethylene oxide).
9. slow-release solid chlorine dioxide formaldehyde scavenger according to claim 1 it is characterised in that：Described adsorbing medium
Including at least one in cordierite, alumina balls, kieselguhr, pelelith, mullite, Maifanitum, meerschaum.
10. a kind of method of the slow-release solid chlorine dioxide formaldehyde scavenger prepared described in claim 1 is it is characterised in that wrap
Include following steps：
(1) prepare stability chlorine dioxide A system：By weight adsorbing medium be impregnated in stability chlorine dioxide activearm
5～80min in the solution dividing, subsequently takes out and dries in the shade, is dried, then in one layer of covering of its Surface coating, you can；
(2) prepare activator B system：By weight percent acidic materials, hygroscopic agent, water-retaining agent and water are configured to mixed solution
Afterwards, by ratio of weight and the number of copies adsorbing medium be impregnated in 5～60min in this mixed solution, subsequently take out and dry in the shade, be dried, you can；
(3) unitary packaging, vacuum sealing after in mass ratio stability chlorine dioxide A system being mixed homogeneously with activator B system
Preserve, you can.
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