CN113647406B - Solid mosquito-repellent incense and preparation method thereof - Google Patents
Solid mosquito-repellent incense and preparation method thereof Download PDFInfo
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- CN113647406B CN113647406B CN202110987731.XA CN202110987731A CN113647406B CN 113647406 B CN113647406 B CN 113647406B CN 202110987731 A CN202110987731 A CN 202110987731A CN 113647406 B CN113647406 B CN 113647406B
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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
- A01N53/00—Biocides, pest repellants or attractants, or plant growth regulators containing cyclopropane carboxylic acids or derivatives thereof
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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
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/08—Oxygen or sulfur directly attached to an aromatic ring system
- A01N31/12—Bis-chlorophenols
-
- 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
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/08—Oxygen or sulfur directly attached to an aromatic ring system
- A01N31/14—Ethers
-
- 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
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/72—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms
- A01N43/80—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with nitrogen atoms and oxygen or sulfur atoms as ring hetero atoms five-membered rings with one nitrogen atom and either one oxygen atom or one sulfur atom in positions 1,2
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/30—Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change
Abstract
The invention relates to solid mosquito-repellent incense and a preparation method thereof, belonging to the field of daily chemicals. The solid mosquito-repellent incense comprises a blank body and effective components, wherein the effective components comprise pyrethroid with the weight part ratio of 0.02-0.10 and degerming agent with the weight part ratio of 0.082-0.9; the degerming agent comprises at least one of the following raw materials: 2-octyl-4-isothiazolin-3-one, 2,4 '-trichloro-2' -hydroxydiphenyl ether, 2, 4-dichloro-3, 5-xylenol, 2-methyl-4-isothiazolin-3-one, 2-methyl-5-chloro-4-isothiazolin-3-one, 4-chloro-3, 5-dimethylphenol. The solid mosquito-repellent incense has the effects of repelling and killing mosquitoes after being combusted, and simultaneously has the effect of removing bacteria from air, and the antibacterial rate reaches 60% -90%.
Description
Technical Field
The invention relates to the field of daily chemicals, in particular to solid mosquito-repellent incense and a preparation method thereof.
Background
In 2020, the new coronavirus is rolled around the world, so that people have remarkably improved awareness of sterilization and degerming, and increasingly stronger requirements on products with sterilization and degerming effects are met. The mosquito-repellent incense is used in spring and autumn, which is a season heavily contaminated by bacteria and viruses, and has sterilization and degerming effects, and the sterilization and degerming effects of the mosquito-repellent incense have important effects on sterilization and degerming of daily environments of people.
Disclosure of Invention
Aiming at the problems, the invention provides the solid mosquito-repellent incense which has the effect of obviously reducing harmful bacteria in air, and the bacteriostasis rate reaches 60-90 percent.
In order to achieve the aim, the solid mosquito-repellent incense comprises a blank body and an effective component, wherein the effective component comprises pyrethroid with the weight ratio of 0.02-0.10 part and a degerming agent with the weight ratio of 0.082-0.9 part;
the degerming agent comprises at least one of the following raw materials: 2-octyl-4-isothiazolin-3-one, 2,4 '-trichloro-2' -hydroxydiphenyl ether, 2, 4-dichloro-3, 5-xylenol, 2-methyl-4-isothiazolin-3-one, 2-methyl-5-chloro-4-isothiazolin-3-one, 4-chloro-3, 5-dimethylphenol.
The raw materials are used as a bactericide and added into the solid mosquito-repellent incense, so that the mosquito-repellent incense has an air sterilization effect while repelling and killing mosquitoes after burning, and can stably exist in a solid mosquito-repellent incense system.
In one embodiment, the degerming agent comprises: 2-methyl-4-isothiazolin-3-one, 2-methyl-5-chloro-4-isothiazolin-3-one, and 4-chloro-3, 5-dimethylphenol.
The 3 raw materials are selected as the degerming agent, can stably exist in a solid mosquito-repellent incense system, can be stably volatilized when the mosquito-repellent incense is ignited, can be volatilized and diffused into air, is high in degerming efficiency, can kill or inhibit air and surface harmful flora, and is high in degerming efficiency, good in safety and high in cost performance.
In one embodiment, the degerming agent comprises the following raw materials in parts by weight:
0.05 to 0.60 portion of 2-methyl-4-isothiazoline-3-ketone
0.03 to 0.20 portion of 2-methyl-5-chloro-4-isothiazoline-3-ketone
0.002-0.10 part of 4-chloro-3, 5-dimethylphenol.
The degerming agent is formed by adopting the raw materials in parts by weight, so that a better degerming effect can be obtained, and the concentration of harmful flora in the air can be properly reduced.
In one embodiment, the degerming agent comprises the following raw materials in parts by weight:
0.05 to 0.30 portion of 2-methyl-4-isothiazoline-3-ketone
0.03 to 0.10 portion of 2-methyl-5-chloro-4-isothiazoline-3-ketone
0.002-0.05 part of 4-chloro-3, 5-dimethylphenol.
The degerming agent is formed by adopting the raw materials in parts by weight, so that an excellent degerming effect can be obtained, and the air is not sterile and harmful to human health.
In one embodiment, the weight ratio of the blank to the degerming agent is 250-500:1 are matched.
The green body and the degerming agent are matched according to the weight ratio, so that the concentration of the degerming agent is suitable, the whole solid mosquito-repellent incense system is stable, harmful flora in air and surfaces can be inhibited during combustion, excessive degerming can be avoided, and the resistance of people is reduced.
In one embodiment, the blank body comprises the following raw materials in parts by weight:
the green body prepared from the raw materials can simultaneously and effectively bear the degerming agent and the effective components, and the degerming agent and the effective components are stably released in the combustion process.
In one embodiment, the blank body comprises the following raw materials in parts by weight:
the green body prepared by the raw materials has the advantages of best bearing effect, most stable system and better sterilization and insecticidal effects in the combustion process.
In one embodiment, the carbon powder comprises at least one of the following raw materials: charcoal powder, bamboo charcoal powder; the plant powder comprises at least one of the following raw materials: fir powder, eucalyptus powder, maple powder, poplar powder, pine powder, cedar powder, camphor powder, wormwood powder, citronella powder and chrysanthemum powder; the starch comprises at least one of the following raw materials: corn starch, sweet potato starch, and tapioca starch.
The invention also provides a preparation method of the solid mosquito-repellent incense, which comprises the following steps:
preparing a blank body: mixing the starch, the carbon powder, the plant powder and water, and performing rolling, punch forming and drying to obtain the starch-carbon composite material;
preparing solid mosquito-repellent incense: and mixing the pyrethroid and the bactericide, and spraying the mixture on the green body to obtain the pyrethroid bactericide.
By adopting the preparation method, the effective components and the degerming agent can be well carried on the green body, the bearing effect is stable, and the volatilization experiment effect is good. Compared with the prior art, the invention has the following beneficial effects:
according to the solid mosquito-repellent incense and the preparation method thereof, the solid mosquito-repellent incense has an air sterilization effect while repelling and killing mosquitoes, and the bacteriostasis rate reaches 60-90%. Simultaneously, through to the selection of the kind and the dose of raw materials among the solid-state mosquito-repellent incense, can make the mosquito-repellent incense in combustion process, stable release active ingredient and degerming agent composition suitably reduce the harmful fungus crowd in the air, make people can avoid the pathogenic phenomenon that harmful fungus concentration is too big to lead to in the air, also can avoid simultaneously causing the condition that resistance capacity weakens because of being in sterile environment for a long time, be applicable to daily air and kill the mosquito degerming.
Detailed Description
In order that the invention may be more fully understood, reference will now be made to the accompanying examples. The following is a description of preferred embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Defining:
the plant powder of the invention: the plant is dried completely and processed into superfine powder.
Pyrethroid: it is a kind of synthetic pesticide with high efficiency, broad spectrum, low toxicity, biodegradability and other important features.
The source is as follows:
reagents, materials and equipment used in the embodiment are all commercially available sources unless otherwise specified; unless otherwise specified, all the experimental methods are routine in the art.
The raw material components and the weight ratio of each of the following examples and comparative examples are shown in the following table:
TABLE 1 raw material composition, weight ratio of each example and comparative example
Example 1
A solid mosquito-repellent incense is prepared by the following steps:
1. weighing the raw materials according to the following weight part ratio for later use.
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of tetramethrin, 0.2 part of perfume, 1.8 parts of ethanol and 0.9 part of bactericide, wherein the bactericide comprises: 0.6 part of 2-methyl-4-isothiazolin-3-one (MI), 0.2 part of 2-methyl-5-chloro-4-isothiazolin-3-one (CMI) and 0.1 part of 4-chloro-3, 5-dimethylphenol.
2. A preparation method.
Preparing a blank body: adding corn starch into water, stirring while slowly heating to boil, decocting to obtain paste, adding starch paste into carbon powder and wood powder, stirring, rolling into incense skin of 4-5mm in incense coil forming machine, stamping with mold in stamping process, and oven drying at 50-90 deg.C to obtain blank;
preparing solid mosquito-repellent incense: uniformly stirring the tetramethrin and the bactericide to prepare a liquid medicine, uniformly spraying the liquid medicine on the blank, and obtaining the product after the liquid medicine is absorbed by the blank.
Example 2
A solid mosquito-repellent incense is prepared by the following steps:
1. weighing the raw materials according to the following weight parts for later use.
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of transfluthrin, 0.2 part of spice, 0.9 part of ethanol and 0.45 part of degerming agent, wherein the degerming agent comprises: 0.30 part of 2-methyl-4-isothiazolin-3-one (MI), 0.10 part of 2-methyl-5-chloro-4-isothiazolin-3-one (CMI) and 0.05 part of 4-chloro-3, 5-dimethylphenol.
2. A preparation method.
The method of preparation is the same as in example 1.
Example 3
A solid mosquito-repellent incense is prepared by the following steps:
1. weighing the raw materials according to the following weight parts for later use.
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of transfluthrin, 0.2 part of spice, 0.3 part of ethanol and 0.14 part of degerming agent, wherein the degerming agent comprises: 0.09 part of 2-methyl-4-isothiazolin-3-one (MI), 0.03 part of 2-methyl-5-chloro-4-isothiazolin-3-one (CMI) and 0.02 part of 4-chloro-3, 5-dimethylphenol.
2. A preparation method.
The method of preparation is the same as in example 1.
Example 4
A solid mosquito-repellent incense is prepared by the following steps:
1. weighing the raw materials according to the following weight part ratio for later use.
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of tetramethrin, 0.2 part of perfume, 0.9 part of ethanol and 0.45 part of degerming agent, wherein the degerming agent comprises: 0.40 part of 2-methyl-4-isothiazolin-3-one (MI) and 0.05 part of 2,4 '-trichloro-2' -hydroxydiphenyl ether.
2. A preparation method.
The method of preparation is the same as in example 1.
Example 5
A solid mosquito-repellent incense is prepared by the following steps:
1. weighing the raw materials according to the following weight part ratio for later use.
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of tetramethrin, 0.2 part of perfume, 0.9 part of ethanol and 0.45 part of degerming agent, wherein the degerming agent comprises: 0.40 part of 2-octyl-4-isothiazolin-3-one and 0.05 part of 2, 4-dichloro-3, 5-xylenol.
2. A preparation method.
The method of configuration was the same as in example 1.
Example 6
A solid mosquito-repellent incense is prepared by the following steps:
1. weighing the raw materials according to the following weight part ratio for later use.
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of tetramethrin, 0.2 part of perfume, 0.4 part of ethanol and 0.45 part of degerming agent, wherein the degerming agent comprises: 0.34 parts of 2-methyl-4-isothiazolin-3-one (MI) and 0.11 parts of 2-methyl-5-chloro-4-isothiazolin-3-one (CMI).
2. The preparation method.
The method of configuration was the same as in example 1.
Example 7
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of transfluthrin, 0.2 part of spice, 0.4 part of ethanol and 0.45 part of degerming agent, wherein the degerming agent comprises: 0.45 part of 4-chloro-3, 5-dimethylphenol.
2. A preparation method.
The method of configuration was the same as in example 1.
Comparative example 1
80 parts of charcoal powder, 90 parts of water, 15 parts of wood powder, 1.5 parts of corn starch, 0.03 part of tetramethrin, 0.2 part of perfume, 0.4 part of ethanol and 0.45 part of degerming agent, wherein the degerming agent comprises: sorbic acid 0.45.
2. The preparation method.
The method of configuration was the same as in example 1.
Experimental example 1
Air disinfection effect identification test.
1. Test equipment and equipment.
(1) The test bacterium is staphylococcus albus 8032, and a bacterial suspension is prepared.
(2) The nutrient broth medium with the corresponding neutralizing agent (likewise with octanol or olive oil) was used as the sampling solution.
(3) Phosphate buffered saline (PBS, 0.03mol/L, pH 7.2).
(4) Conventional nutrient broth medium.
(5) Conventional nutrient agar medium. During the sterilization test of the disinfectant, a corresponding neutralizer needs to be added.
(6) An adjacent pair of aerosol cabinets or chambers, one for the disinfection test and one for the test control. A pair of aerosol cabinets or chambers should be maintained in a consistent environment (including temperature, humidity, light, tightness, and ventilation conditions). The cabinet (or chamber) is preferably constructed of aluminum alloy and glass. Temperature and humidity adjusting devices, ventilator filtration sterilization or other disinfection devices and corresponding pipelines should be installed, and windows for oversleeve operation, sample transfer and the like for spraying, infecting bacteria, supplying disinfectants, sampling and the like should be opened.
(7) The spray contamination device comprises an air compressor, a pressure gauge, a gas flowmeter, an aerosol sprayer and the like. More than 90% of the diameter of the sprayed bacterial aerosol particles is between 1 and 10 mu m.
(8) The air microorganism sampling device comprises a six-level sieve pore air impact type sampler, a liquid impact type sampler, an air extractor, a gas flowmeter and the like.
(9) And environment monitoring equipment such as a thermometer, a hygrometer and the like.
2. And (4) testing.
The air sterilization test is divided into a laboratory test, a simulation field test and a field test, and the operation procedures of the laboratory test and the simulation field test are as follows.
(1) Taking the test bacteria suspension, filtering the test bacteria suspension by using sterile absorbent cotton, and then diluting the test bacteria suspension to the required concentration by using a nutrient broth culture medium.
(2) And simultaneously adjusting the temperature and the relative humidity of the two aerosol cabinets (or chambers) to the temperature and the relative humidity required by the test.
(3) The used equipment is put into the aerosol cabinet (or chamber) at one time, and the door is closed. Thereafter, all manipulations and manipulations of the instrument device are performed outside the cabinet (or room) through windows or remote controls with sealed sleeves. The door can be opened until the test is finished.
(4) And (4) spraying the contaminated bacteria according to the set pressure, the set gas flow and the set spraying time. The mixture is sprayed and infected with bacteria while being stirred by a fan. After the spray contamination is finished, stirring is continued for 5min, and then standing is carried out for 5min.
(5) Meanwhile, the aerosol cabinets (or chambers) of the control group and the test group are respectively sampled before disinfection and used as positive controls (namely, the quantity of the polluted bacteria) before the test of the control group and before the disinfection treatment of the test group. The number of positive control bacteria in the air in the aerosol cabinet (or room) should be 5 × 10 4 cfu/m 3 ～5×10 6 cfu/m 3 。
(6) The sterilization was performed in the test group aerosol cabinet (or chamber) according to the method specified in the product specification. The control aerosol cabinet was treated with the corresponding (disinfectant free) treatment.
(7) The test group and the control aerosol cabinet (or chamber) were sampled simultaneously by the method described above. Continuing to act for a second predetermined disinfection time, and sampling again as described above. In this way, the sampling is carried out in segments according to the action time until the specified final action time.
(8) In the laboratory test stage, live bacteria culture counting is carried out on samples collected by a liquid impact type sampler, the samples are cultured in an incubator at 37 ℃ for 48 hours, and the final result is observed.
(9) In the stage of simulating field test, when a six-level sieve mesh air impact type sampler is used for sampling, a sampling flat plate is directly put into an incubator at 37 ℃ for culturing for 48h, the final result is observed, and the number of growing colonies is counted.
(10) After the whole test is finished, the surface of the aerial fog cabinet (room) and the bacteria remained in the air are finally disinfected, the ventilator is opened, and the air is filtered, sterilized and exhausted to remove the polluted air remained in the cabinet (or room) so as to prepare for the next test.
(11) After sampling and sample inoculation of the test group and the positive control group are completed, the unused same batch of culture medium, sampling solution, PBS and the like (1-2 parts of each sample) and the two groups of samples are cultured simultaneously or cultured after inoculation to serve as negative controls. If the negative control group has bacteria growth, the used culture medium or reagent is polluted, the test is invalid, and the sterile equipment is replaced for carrying out the test again.
(12) The same condition test is repeated for 3 times, and the killing rate is calculated respectively for each time. When the killing rate of the 3 times results is more than or equal to 99.90 percent, the disinfection is qualified. The calculation method of the killing rate is as follows:
wherein, nt: the natural mortality rate of bacteria in the air;
V 0 and Vt: air bacteria content before the start of the test and in the test process of the control group are respectively different;
K t : the sterilization treatment has the effect of killing bacteria in the air;
V 0 and Vt': the air bacteria content before the sterilization treatment and in the sterilization process of the test group at different time are respectively.
The bacteria content in the air before and after sterilization is calculated according to the following formula:
3. the solid mosquito-repellent incense of examples 1 to 7 and comparative example 1 was examined by the above-mentioned test method.
The results are shown in the following table:
TABLE 2 air Disinfection Effect identification test results
Experimental example 2
And (4) a volatility determination test.
1. A volatility determination test is designed according to national standard HG/T2467.18-2003, and the specific test steps are as follows:
3-5g (accurate to 0.0002 g) of solid mosquito-repellent incense is weighed as a sample by using a prepared 2cm x 3cm lens paper bag, and the sample is placed on a combustion table in a combustion bottle. 100mL of absorption liquid is added into the first-stage absorption tube, and 50mL of absorption liquid is added into the second-stage, third-stage, fourth-stage and fifth-stage absorption tubes respectively. The air pump is started to keep the first-stage absorption tube to generate 2-3 bubbles per second. After the sample is ignited by match, the vent valve is opened to pump the smoke in the combustion bottle and the buffer bottle into the absorption tube for absorption (when the sample burns violently and the absorption liquid flows back, the vent valve of the combustion bottle plug adopts a negative pressure vent valve), and when no visible smoke exists, the smoke is pumped for 5min. The suction pump was turned off, the combustion sample residue was taken out, and the absorption solution in each absorption tube was transferred to a 500mL flask, and then the inner path of the fuming apparatus was washed 3 times with 200mL of ethanol, and the washing solution was poured into the same 500mL flask. The flask was placed on a rotary evaporator. The solution was evaporated to about 40ml, the flask was taken out and returned to room temperature, and the collected liquid was measured by an active ingredient analysis method.
2. The calculation formula of the sample volatilization rate is as follows:
the mass fraction X2 (%) of the components of the degerming agent in the collection solution is calculated according to the following formula:
X2＝r4×w1×m1/(r3×m6)
in the formula: r3 is the average value of the peak areas of the components of the degerming agent in the standard sample solution; r4 is the average value of the peak areas of the components of the degerming agent in the sample solution; m is the mass of the standard sample of the degerming agent component, and the unit is gram (g); m 6-mass of sample in grams (g); w 1-mass fraction of the degerming agent component in the standard sample, and the numerical value is expressed in%.
The volatilization rate X3 (%) of the sample was calculated by the following formula:
X3＝X2/X1×100
in the formula: x1 is the mass fraction of the degerming agent component in the sample, and the numerical value is expressed in percent; x2 is the mass fraction of the components of the degerming agent in the smoke, and the numerical value is expressed by percent.
The difference between the results of the two replicates should be no more than 5%, and the arithmetic mean is taken as the measurement result.
3. The solid mosquito-repellent incense of examples 1 to 7 and comparative example 1 was examined by the above-mentioned test method.
The results are shown in the following table:
TABLE 3 volatility test results of solid mosquito-repellent incense
The results of experimental examples 1 and 2 show that: the examples 1 to 7 can achieve 60 to 90 percent of sterilization rate and have better bacteria killing rate, while the examples 1 to 4 and the examples 6 to 7 have better volatilization rate at the same time, and can stably volatilize the active ingredients carried in the solid mosquito-repellent incense into the air to play the roles of killing mosquitoes and sterilizing. However, in examples 1 to 4 and examples 6 to 7, only the sterilization rate of example 1 and example 2 reached 80% or more, and the volatilization rate of 90% or more was compatible. The bacteria killing rate of the embodiment 1 is better because the bacteria killing agent contains the bacteria killing agent with higher weight ratio, however, certain harm may be brought to users along with the increase of the content of the bacteria killing agent, and the invention aims to properly reduce harmful bacteria groups instead of realizing sterility, so the bacteria killing rate reaches more than 80 percent, namely, the product requirement is met. The bacteria killing rate of the embodiment 2 meets the requirement, and compared with the embodiment 1, the bacteria killing rate of the embodiment meets the requirement of residents on the use safety of mosquito coils.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that various changes and modifications can be made by those skilled in the art without departing from the spirit of the invention, and these changes and modifications are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. The solid mosquito-repellent incense is characterized by comprising a base body and active ingredients, wherein the active ingredients comprise pyrethroid with the weight ratio of 0.02-0.10 part and degerming agent with the weight ratio of 0.082-0.9 part;
the degerming agent comprises the following raw materials in parts by weight:
0.05 part to 0.60 part of 2-methyl-4-isothiazoline-3-ketone
0.03 to 0.20 portion of 2-methyl-5-chloro-4-isothiazoline-3-ketone
0.002-0.10 part of 4-chloro-3, 5-dimethylphenol;
the blank and the degerming agent are mixed according to the weight ratio of 250-500:1, matching; the blank body comprises the following raw materials in parts by weight:
2. the solid mosquito-repellent incense according to claim 1, wherein the bactericide comprises the following raw materials in parts by weight:
0.05 part to 0.30 part of 2-methyl-4-isothiazoline-3-ketone
0.03 to 0.10 portion of 2-methyl-5-chloro-4-isothiazoline-3-ketone
0.002-0.05 part of 4-chloro-3, 5-dimethylphenol.
3. The solid mosquito-repellent incense of claim 1, wherein the blank comprises the following raw materials in parts by weight:
4. the solid mosquito coil of claim 3, wherein the carbon powder comprises at least one of the following raw materials: charcoal powder, bamboo charcoal powder; the plant powder comprises at least one of the following raw materials: fir powder, eucalyptus powder, maple powder, poplar powder, pine powder, cypress powder, camphor powder, wormwood powder, citronella powder and chrysanthemum powder; the starch comprises at least one of the following raw materials: corn starch, sweet potato starch, and tapioca starch.
5. A method for preparing solid mosquito-repellent incense as claimed in any one of claims 1 to 4, comprising the steps of:
preparing a blank body: mixing the starch, the carbon powder, the plant powder and water, and carrying out rolling, punch forming and drying on the mixture to obtain the starch-carbon composite material;
preparing solid mosquito-repellent incense: and mixing the pyrethroid and the bactericide, and spraying the mixture on the green body to obtain the pyrethroid bactericide.
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| CN202110987731.XA CN113647406B (en) | 2021-08-26 | 2021-08-26 | Solid mosquito-repellent incense and preparation method thereof |
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| CN101946806B (en) * | 2010-01-18 | 2011-10-26 | 中山榄菊日化实业有限公司 | Combustion mosquito coil incense and preparation method thereof |
| CN102669155A (en) * | 2012-05-14 | 2012-09-19 | 中山榄菊日化实业有限公司 | Alternative drug using mosquito-repellent incense and preparation method thereof |
| CN103814965A (en) * | 2014-02-28 | 2014-05-28 | 曹以鉴 | Environmentally-friendly electrothermal liquid mosquito-repellent incense |
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