CN111543426A - Preparation method of slow-release chlorine dioxide gel - Google Patents
Preparation method of slow-release chlorine dioxide gel Download PDFInfo
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- CN111543426A CN111543426A CN202010392025.6A CN202010392025A CN111543426A CN 111543426 A CN111543426 A CN 111543426A CN 202010392025 A CN202010392025 A CN 202010392025A CN 111543426 A CN111543426 A CN 111543426A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
- A01N25/04—Dispersions, emulsions, suspoemulsions, suspension concentrates or gels
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/18—Vapour or smoke emitting compositions with delayed or sustained release
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N59/00—Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/01—Deodorant compositions
- A61L9/012—Deodorant compositions characterised by being in a special form, e.g. gels, emulsions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0052—Preparation of gels
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Abstract
The invention provides a preparation method of slow-release chlorine dioxide gel, which comprises the following steps: s1: preparing a chlorine dioxide stabilizing solution to obtain a mixture A, S2: uniformly mixing an activator, a gelling agent and a slow-release agent to obtain a mixture B, and comprising the following steps of: s2-1: selection of activator, S2-2: selection of gelling agent, S2-3: selection of sustained release agent, S3: adding a fragrance to the mixture B to obtain a mixture C, S4: the mixture A and the mixture C are mixed to prepare chlorine dioxide gel, the chlorine dioxide gel is slowly released, and a gel system is relatively complete and independent and is not influenced by space and humidity; according to the invention, the activator, the gel and the sustained-release agent are selected finely, so that the controllable release of chlorine dioxide is realized, the conventional effect of the chlorine dioxide at the lasting period is broken, and the fragrance is added, so that the original pungent smell of chlorine dioxide is covered while the air is purified, and the air is fresher.
Description
Technical Field
The invention relates to the technical field of air purification, in particular to a preparation method of slow-release chlorine dioxide gel.
Background
Chlorine dioxide is a water-soluble strong oxidant, is a yellow green gas at normal temperature and normal pressure, is a latest generation of high-efficiency, broad-spectrum and safe sterilization and fresh-keeping agent internationally acknowledged at present, is an ideal substitute of a chlorine preparation, and is widely applied to disinfection, mould prevention, food preservation and fresh keeping and the like of food, food processing, pharmacy, hospitals, public environments and the like;
chlorine dioxide is active in chemical property and not stable, so that purified chlorine dioxide gas is generally introduced into an inert solution composed of a stabilizer, but liquid chlorine dioxide is short in release period after being ignited and inconvenient to transport, store and use, and in order to further expand the application and use range of chlorine dioxide, in recent years, a production process of chlorine dioxide gel is successively developed in many countries, and a novel chlorine dioxide product is prepared by solidifying a chlorine dioxide solution on a carrier.
Disclosure of Invention
The invention aims to provide a preparation method of slow-release chlorine dioxide gel, which finely selects an activating agent, a gelling agent and a slow-release agent, realizes the controllable release of chlorine dioxide, breaks the routine at the effective period end of chlorine dioxide, and simultaneously adds an aromatic, so that the original pungent smell of chlorine dioxide is covered while air is purified, and the air is fresher.
The invention provides a preparation method of slow-release chlorine dioxide gel, which comprises the following steps:
s1: preparing chlorine dioxide stabilizing solution to obtain a mixture A;
s2: uniformly mixing an activator, a gelling agent and a slow-release agent to obtain a mixture B, and comprising the following steps of:
s2-1: selecting an activating agent;
s2-2: selecting a gel;
s2-3: selecting a slow release agent;
s3: adding an aromatic into the mixture B to obtain a mixture C;
s4: and mixing the mixture A and the mixture C to prepare chlorine dioxide gel.
Preferably, in S1, the highly pure chlorine dioxide gas is absorbed in water containing a stabilizer to obtain a tasteless, odorless, nontoxic and noncorrosive liquid, which is non-volatile, nonflammable and safe and reliable to use.
Preferably, in S1, the conversion rate of the chlorine dioxide stable solution is as high as 95%, the purity of the chlorine dioxide released after activation is more than 98%, no toxic and side residues such as chlorine, chlorate, chlorite and the like exist, no explosion danger exists, and the chlorine dioxide stable solution is convenient and safe to transport and store.
Preferably, in S1, the storage temperature of the chlorine dioxide stabilizing solution is-5 to 95 ℃.
Preferably, in S2, since the chlorine dioxide stabilizing solution is a weak alkaline system and has a PH of 8.29, the activating agent is generally an acid or an acidic salt, and chlorine dioxide molecules are liberated in an acidic environment.
Preferably, in S2, since the activated chlorine dioxide has strong oxidizing property and the PH of the system is changed from 8.29 to 2.0 before and after activation, there is a change from alkaline to acidic, and the gelling agent is required to have strong oxidation resistance and adaptability to acid and alkali.
Preferably, in S2, although the chlorine dioxide gel can slow down the volatilization rate of chlorine dioxide, the release rate of chlorine dioxide is still fast, and in order to make chlorine dioxide volatilize in the gel at a desired speed, a slow release agent is added to achieve the purpose.
Preferably, in S3, the aromatic substance is menthol as a main raw material.
Preferably, the chlorine dioxide gel is slowly released, and the gel system is relatively complete and independent and is not influenced by space and humidity.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is an overall flow chart of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to the drawings, the present invention provides a technical solution: a preparation method of slow-release chlorine dioxide gel comprises the following steps:
s1: preparing chlorine dioxide stabilizing solution to obtain a mixture A;
the stable chlorine dioxide solution is a tasteless, odorless, nontoxic and noncorrosive liquid obtained by absorbing high-purity chlorine dioxide gas into water containing a stabilizer, is nonvolatile, nonflammable, safe and reliable to use, and can be stored for two years at the temperature of-5-95 ℃, and has the following advantages:
the conversion rate is more than or equal to 95 percent;
the purity of the chlorine dioxide released after activation is more than or equal to 98 percent;
thirdly, the method is economical and efficient, and the use cost is low;
fourthly, toxic and side residues such as chlorine, chlorate, chlorite and the like are avoided;
no explosion danger, convenient and safe transportation and storage;
s2: uniformly mixing an activator, a gelling agent and a slow-release agent to obtain a mixture B, and comprising the following steps of:
s2-1: selecting an activating agent;
because the chlorine dioxide stabilizing solution is a weak alkaline system and the pH is 8.29, the activating agent generally adopts acid or acidic salt, chlorine dioxide molecules are dissociated in an acidic environment, and the influence of the activating agent on the volatilization rate of chlorine dioxide is specifically shown in table 1:
as can be seen from the table, the hydrochloric acid and the citric acid have very quick activation effect on the stable chlorine dioxide, the chlorine dioxide is quickly and completely activated in a short time, but the escape speed of the chlorine dioxide is too high, so that the chlorine dioxide is not suitable for being used as a slow-release gel chlorine dioxide activator, the acidic salt aluminum sulfate can also activate the stable chlorine dioxide, but the activation speed is too low, the escape speed of the chlorine dioxide is too low, the air purification effect is not ideal, and the release speed of the weakly acidic citric acid and the sodium dihydrogen phosphate is ideal;
s2-2: selecting a gel;
because the activated chlorine dioxide has strong oxidizing property, and the pH of the system is changed from 8.29 to 2.0 before and after activation, the system has the transformation from alkalinity to acidity, and the gelling agent is required to have strong oxidation resistance and adaptability to acid and alkali, and the gel state of the gelling agent is shown in table 2:
as can be seen from the table, xanthan gum, sodium carboxymethylcellulose and ammonium polyacrylate can be formed into gel, but the ammonium polyacrylate needs to be stirred and has poor dispersibility, while the xanthan gum has strong dispersibility and can be dispersed in rainwater without stirring, so that the xanthan gum is most suitable;
s2-3: selecting a slow release agent;
although the chlorine dioxide gel can slow down the volatilization speed of chlorine dioxide, the release speed of chlorine dioxide is still very high, in order to make chlorine dioxide volatilize in the gel at an ideal speed, a slow-release agent can be added to realize the purpose, and the slow-release effect of different slow-release agents on chlorine dioxide is shown in the following table 1:
as can be seen from the table, the sustained release effect of the polyethylene glycol is most obvious;
s3: adding an aromatic into the mixture B to obtain a mixture C; the aromatic adopts menthol which has mint fragrance and a cooling effect, can improve the air freshness and cover the pungent smell of chlorine dioxide, and the menthol belongs to edible spices, is non-toxic and harmless and has high safety;
s4: the mixture A and the mixture C are mixed to prepare chlorine dioxide gel, the chlorine dioxide gel is slowly released, and a gel system is relatively complete and independent and is not influenced by space and humidity.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications and substitutions do not depart from the spirit and scope of the present invention as defined by the appended claims.
Claims (9)
1. The preparation method of the slow-release chlorine dioxide gel is characterized by comprising the following steps:
s1: preparing chlorine dioxide stabilizing solution to obtain a mixture A;
s2: uniformly mixing an activator, a gelling agent and a slow-release agent to obtain a mixture B, and comprising the following steps of:
s2-1: selecting an activating agent;
s2-2: selecting a gel;
s2-3: selecting a slow release agent;
s3: adding an aromatic into the mixture B to obtain a mixture C;
s4: and mixing the mixture A and the mixture C to prepare chlorine dioxide gel.
2. The method of claim 1, wherein the high-purity chlorine dioxide gas is absorbed into water containing a stabilizer to obtain a tasteless, odorless, nontoxic and noncorrosive liquid, which is non-volatile and nonflammable, and is safe and reliable in use in S1.
3. The method for preparing a sustained-release chlorine dioxide gel according to claim 1, wherein in S1, the conversion rate of the chlorine dioxide stabilizing solution is as high as 95%, the purity of the chlorine dioxide released after activation is more than 98%, and the gel has no toxic and side-effect residue such as chlorine, chlorate, chlorite and the like, has no explosion risk, and is convenient and safe to transport and store.
4. The method for preparing a sustained-release chlorine dioxide gel according to claim 1, wherein the temperature at which the chlorine dioxide stabilizing solution is stored in S1 is-5 to 95 ℃.
5. The method for preparing a sustained-release chlorine dioxide gel according to claim 1, wherein in S2, since the chlorine dioxide stabilizing solution is a weak alkaline system and has a PH of 8.29, the activating agent is generally an acid or an acidic salt, and the chlorine dioxide molecules are liberated in an acidic environment.
6. The method of claim 1, wherein in S2, the activated chlorine dioxide has strong oxidizing property, and the pH of the system before and after activation is changed from 8.29 to 2.0, so that the system has a change from alkaline to acidic, and the gel requires strong oxidation resistance and adaptability to acid and alkaline.
7. The method for preparing a chlorine dioxide gel with sustained release according to claim 1, wherein in S2, although the chlorine dioxide gel can slow down the volatilization rate of chlorine dioxide, the release rate of chlorine dioxide is still fast, and the addition of sustained release agent can be used to volatilize chlorine dioxide in the gel at a desired speed.
8. The method of claim 1, wherein the aromatic substance is menthol as a main ingredient in S3.
9. The method for preparing a sustained-release chlorine dioxide gel according to claim 1, wherein the chlorine dioxide gel is slowly released, and the gel system is relatively complete and independent and is not affected by space and humidity.
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| CN202010392025.6A CN111543426A (en) | 2020-05-11 | 2020-05-11 | Preparation method of slow-release chlorine dioxide gel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112021309A (en) * | 2020-08-31 | 2020-12-04 | 天津市晶品环保工程有限公司 | 360-degree air purification gel and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039934A (en) * | 1998-08-04 | 2000-03-21 | Alliger; Howard | Use of xanthan gum for gelling CIO2 and related species |
| CN101138644A (en) * | 2007-09-17 | 2008-03-12 | 河北科技大学 | Fragrant type sustained-release chlorine dioxide gel rubber powder and preparation method thereof |
| CN101455849A (en) * | 2007-12-11 | 2009-06-17 | 上海和黄白猫有限公司 | Air purification agent |
| CN104288810A (en) * | 2014-09-19 | 2015-01-21 | 明光瑞泰工业有限公司 | Chlorine dioxide air purifying preparation with lasting capacity |
| CN104288809A (en) * | 2014-09-19 | 2015-01-21 | 明光瑞泰工业有限公司 | Novel air purifying preparation |
| CN107853295A (en) * | 2017-10-23 | 2018-03-30 | 深圳市壹岚科技有限公司 | A kind of controllable type sustained release air purifying preparation and preparation method thereof |
| CN110574764A (en) * | 2019-08-23 | 2019-12-17 | 银河环保科技(天津)有限公司 | Slow-release chlorine dioxide gel powder and preparation method thereof |
-
2020
- 2020-05-11 CN CN202010392025.6A patent/CN111543426A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6039934A (en) * | 1998-08-04 | 2000-03-21 | Alliger; Howard | Use of xanthan gum for gelling CIO2 and related species |
| CN101138644A (en) * | 2007-09-17 | 2008-03-12 | 河北科技大学 | Fragrant type sustained-release chlorine dioxide gel rubber powder and preparation method thereof |
| CN101455849A (en) * | 2007-12-11 | 2009-06-17 | 上海和黄白猫有限公司 | Air purification agent |
| CN104288810A (en) * | 2014-09-19 | 2015-01-21 | 明光瑞泰工业有限公司 | Chlorine dioxide air purifying preparation with lasting capacity |
| CN104288809A (en) * | 2014-09-19 | 2015-01-21 | 明光瑞泰工业有限公司 | Novel air purifying preparation |
| CN107853295A (en) * | 2017-10-23 | 2018-03-30 | 深圳市壹岚科技有限公司 | A kind of controllable type sustained release air purifying preparation and preparation method thereof |
| CN110574764A (en) * | 2019-08-23 | 2019-12-17 | 银河环保科技(天津)有限公司 | Slow-release chlorine dioxide gel powder and preparation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112021309A (en) * | 2020-08-31 | 2020-12-04 | 天津市晶品环保工程有限公司 | 360-degree air purification gel and preparation method thereof |
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