CN112521835A - Pest repellent - Google Patents
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- CN112521835A CN112521835A CN202011518535.XA CN202011518535A CN112521835A CN 112521835 A CN112521835 A CN 112521835A CN 202011518535 A CN202011518535 A CN 202011518535A CN 112521835 A CN112521835 A CN 112521835A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
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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
- 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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- 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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/10—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds
- A01N57/14—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-oxygen bonds or phosphorus-to-sulfur bonds containing aromatic radicals
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
- C09D7/62—Additives non-macromolecular inorganic modified by treatment with other compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Engineering & Computer Science (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Agronomy & Crop Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Dentistry (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
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- Inorganic Chemistry (AREA)
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- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a pest repellent, which comprises the following raw materials in parts by weight: 40-50 parts of epoxy resin, 5-10 parts of sodium dodecyl sulfate, 2-8 parts of slow release microspheres, 1-5 parts of triphenylethylene phenol polyoxyethylene ether, 1-3 parts of a modified auxiliary agent, 1-5 parts of hexamethylene diisocyanate, 10-20 parts of a solvent and 1-6 parts of modified bentonite. The invention takes epoxy resin as a base material, sodium dodecyl sulfate, triphenylethylene phenol and polyoxyethylene ether are dispersed in the base material, and the base material is coated on nursery stocks, the sodium dodecyl sulfate can change the permeability of diseases and pests and has the effect of killing the diseases and pests, and the effects of killing the diseases and pests can be further achieved by the assistance and the cooperation of the triphenylethylene phenol and the polyoxyethylene ether.
Description
Technical Field
The invention relates to the technical field of anticorrosive coatings, in particular to a pest repellent.
Background
China is a big agricultural country, and under the continuous promotion of technological innovation, the agriculture of China is converted into the modernized and information-based agriculture to achieve remarkable effect. However, there are also problems encountered in transformation. Wherein, the crop pests bring the hazards of reduced land fertility, abuse of chemical fertilizers and pesticides, enhanced resistance of the crop pests and the like, and influence the yield and the quality of food crops in China. Although the application of chemical pesticides is an important means for preventing and controlling pests, the application can be finally deposited on the leaves of crops, and only 30% of the application amount is deposited, and only about 1% of the pesticide can cover the pest body, so that the actual insecticidal effect is less than 0.03%. A large amount of pesticides are difficult to be lost to the natural environment in the forms of volatilization, drifting and the like, so that huge economic loss, serious water and soil pollution and great threat to human health are caused. Therefore, effective control of pest attack on crops is an urgent problem to be solved in the agricultural development of China at present.
In the prior art, the pest repelling is realized by adopting a method of spraying a medicament in killing the seedling pests, the sprayed medicament is volatile, the action time is short, and the pest control efficiency is poor, so the invention provides the pest repelling agent and the preparation method thereof.
Disclosure of Invention
The present invention is directed to a pest repellent that solves the problems set forth above in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a pest repellent, which comprises the following raw materials in parts by weight:
40-50 parts of epoxy resin, 5-10 parts of sodium dodecyl sulfate, 2-8 parts of slow release microspheres, 1-5 parts of triphenylethylene phenol polyoxyethylene ether, 1-3 parts of a modified auxiliary agent, 1-5 parts of hexamethylene diisocyanate, 10-20 parts of a solvent and 1-6 parts of modified bentonite;
the preparation method of the sustained-release microspheres comprises the following steps:
s1, preparing microsphere precursor: adding 5-10 parts of plant acid into 25-35 parts of deionized water to prepare a water phase, then adding 1-3 parts of Tween 80 into 25-35 parts of 10-12% ethyl cellulose dichloromethane solution, stirring at the rotating speed of 2000r/min for 25-35min, then adding the water phase, then performing ultrasonic dispersion for 5-10min at the frequency of 30-40KHz, finally reacting at 35-45 ℃ for 1-2h at the rotating speed of 1000r/min, and obtaining a microsphere initial body after the reaction is finished and centrifugation;
s2, preparation of sustained release body: adding the microsphere precursor into a magnetic stirrer, adding benzisothiazolinone accounting for 10-20% of the total amount of the microsphere precursor, adding methyl parathion accounting for 15-25% of the total amount of the microsphere precursor, then adding a chitosan solution accounting for 40-50% of the total amount of the microsphere precursor, then adding divinylbenzene accounting for 1-5% of the total amount of the microsphere precursor, continuing stirring for 10-20min, wherein the stirring speed is 500-1000r/min, and finishing stirring to obtain a slow release body;
s3, preparation of sustained-release microspheres: and (3) feeding the microsphere primary body, the colloid and the slow release body into a magnetic stirrer together for stirring, wherein the stirring temperature is increased to 65-75 ℃, the stirring speed is 800-1200r/min, and the stirring time is 20-30min, so as to obtain the slow release microsphere.
Preferably, the pest repellent comprises the following raw materials in percentage by weight:
42-48 parts of epoxy resin, 6-9 parts of sodium dodecyl sulfate, 3-7 parts of slow release microspheres, 2-4 parts of triphenylethylene phenol polyoxyethylene ether, 1.5-2.5 parts of a modification auxiliary agent, 2-4 parts of hexamethylene diisocyanate, 13-17 parts of a solvent and 2-5 parts of modified bentonite.
Preferably, the pest repellent comprises the following raw materials in percentage by weight:
45 parts of epoxy resin, 7.5 parts of sodium dodecyl sulfate, 5 parts of slow release microspheres, 3 parts of triphenylethylene phenol polyoxyethylene ether, 2 parts of modified auxiliary agent, 3 parts of hexamethylene diisocyanate, 15 parts of solvent and 3.5 parts of modified bentonite.
Preferably, the preparation method of the colloid comprises the following steps: adding starch into sodium hydroxide according to the weight ratio of 1:3, stirring at the rotation speed of 100-200r/min for 20-30min, then adding ammonia water to adjust the pH of the solution to 10.0-11.0, then adding sodium sulfate accounting for 10-20% of the total amount of the starch, and continuing stirring for 10-20min at the stirring rotation speed of 150-250r/min to obtain the colloid.
Preferably, the preparation method of the modification auxiliary agent comprises the following steps: irradiating the nano silicon dioxide by protons for 10-20min, then adding vinyl trimethoxy silane accounting for 10-20% of the total amount of the nano silicon dioxide, stirring at 190r/min for 25-35min at 150-.
Preferably, the irradiation power is 220-.
Preferably, the modified bentonite modification method comprises the following steps: the bentonite is sent to 40-45 ℃ for vacuum drying, added into toluene 1-3 times of the bentonite, ultrasonically dispersed for 20-30min with the ultrasonic power of 100-200W, added with phytic acid accounting for 10-20% of the total amount of the bentonite, reacted for 5-7h at 90-100 ℃ and 200-300rpm, filtered and dried to obtain the modified bentonite.
Preferably, the solvent is one or more of ethanol, acetone, cycloethanone and ethyl acetate.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the epoxy resin is used as a base material, the sodium dodecyl sulfate, the triphenylethylene phenol and the polyoxyethylene ether are dispersed into the base material, the base material is coated on the nursery stock to play a role in killing pests of the product, the sodium dodecyl sulfate can change the permeability of the pests and play a role in killing the pests, and the triphenylethylene phenol and the polyoxyethylene ether are matched with each other to further play a role in killing the pests; the slow release microspheres adopt plant acid, Tween 80 and other raw materials to form microsphere precursors, the slow release microspheres adopt benzisothiazolinone and methyl parathion insecticidal auxiliaries as raw materials, chitosan solution can play a synergistic effect, so that benzisothiazolinone and methyl parathion are mixed in the microspheres to achieve the effect of slow release for a long time, the colloid is alkalized in sodium hydroxide by starch, and is modified by ammonia water and sodium sulfate to form colloid which is coordinated with the microsphere precursors, so that stable slow release microspheres are formed, the benzisothiazolinone and methyl parathion raw materials in the slow release microspheres continuously act on pests, and the killing effect of the pests is improved; the modified auxiliary agent takes the nano silicon dioxide as a raw material, the nano silicon dioxide is easier to cooperate with the raw material in the repellent agent after irradiation and organic modification, the dispersibility of the raw material and the connection effect among the raw materials are improved, and the modified bentonite is easier to be mixed with the raw material of the product after being grafted by the phytic acid, so that the contact effect of the product and the nursery stock is improved, and the effect of killing pests is further achieved.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the pest repellent comprises the following raw materials in parts by weight:
40 parts of epoxy resin, 5 parts of lauryl sodium sulfate, 2 parts of slow release microspheres, 1 part of triphenylethylene phenol polyoxyethylene ether, 1 part of modified auxiliary agent, 1 part of hexamethylene diisocyanate, 10 parts of solvent and 1 part of modified bentonite.
The preparation method of the sustained-release microspheres comprises the following steps:
s1, preparing microsphere precursor: adding 5 parts of plant acid into 25 parts of deionized water to prepare a water phase, then adding 1 part of tween 80 into 25 parts of 10% ethyl cellulose dichloromethane solution, stirring at the rotating speed of 1000r/min for 25min, then adding the water phase, then performing ultrasonic dispersion at the frequency of 30KHz for 5min, finally reacting at 35 ℃ for 1h at the rotating speed of 500r/min, and obtaining a microsphere precursor after the reaction and centrifugation;
s2, preparation of sustained release body: adding the microsphere precursor into a magnetic stirrer, adding benzisothiazolinone accounting for 10% of the total amount of the microsphere precursor, adding methyl parathion accounting for 15% of the total amount of the microsphere precursor, adding a chitosan solution accounting for 40-50% of the total amount of the microsphere precursor, adding divinylbenzene accounting for 1% of the total amount of the microsphere precursor, continuously stirring for 10min at the stirring speed of 500r/min, and obtaining a slow-release body after the stirring is finished;
s3, preparation of sustained-release microspheres: and (3) feeding the microsphere precursor, the colloid and the sustained release body into a magnetic stirrer together for stirring, wherein the stirring temperature is increased to 65 ℃, the stirring speed is 800r/min, and the stirring time is 20min, so as to obtain the sustained release microsphere.
The preparation method of the colloid of the embodiment comprises the following steps: adding starch into sodium hydroxide according to the weight ratio of 1:3, stirring at the rotating speed of 100r/min for 20min, then adding ammonia water to adjust the pH value of the solution to 10.0, then adding sodium sulfate accounting for 10% of the total amount of the starch, and continuing stirring for 10min at the stirring rotating speed of 150r/min to obtain the colloid.
The preparation method of the modification assistant in this embodiment is as follows: irradiating the nano silicon dioxide by protons for 10min, then adding vinyl trimethoxy silane accounting for 10% of the total amount of the nano silicon dioxide, stirring at the speed of 150r/min for 25min, then adding acetone accounting for 2 times of the weight of the nano silicon dioxide, continuously stirring for 50min, and finally washing, centrifuging and drying to obtain the nano silicon dioxide.
The irradiation power of the present embodiment is 220W.
The modification method of the modified bentonite in this example is: feeding bentonite into toluene of 1 time of the bentonite after vacuum drying at 40 ℃, ultrasonically dispersing for 20min with the ultrasonic power of 100W, then adding phytic acid of which the total amount is 10 percent of the bentonite, then reacting for 5h at 90 ℃ and 200rpm, filtering and drying to obtain the modified bentonite.
The solvent in this example was ethanol.
Example 2:
the pest repellent comprises the following raw materials in parts by weight:
50 parts of epoxy resin, 10 parts of sodium dodecyl sulfate, 8 parts of slow release microspheres, 5 parts of triphenylethylene phenol polyoxyethylene ether, 3 parts of modified auxiliary agent, 5 parts of hexamethylene diisocyanate, 20 parts of solvent and 6 parts of modified bentonite.
The preparation method of the sustained-release microspheres comprises the following steps:
s1, preparing microsphere precursor: adding 10 parts of plant acid into 35 parts of deionized water to prepare a water phase, then adding 3 parts of tween 80 into 35 parts of 12% ethyl cellulose dichloromethane solution, stirring at the rotating speed of 2000r/min for 35min, then adding the water phase, then performing ultrasonic dispersion at the frequency of 40KHz for 10min, finally reacting at 45 ℃ for 2h at the rotating speed of 1000r/min, and obtaining a microsphere precursor after the reaction and centrifugation;
s2, preparation of sustained release body: adding the microsphere precursor into a magnetic stirrer, adding benzisothiazolinone accounting for 20% of the total amount of the microsphere precursor, adding methyl parathion accounting for 25% of the total amount of the microsphere precursor, adding a chitosan solution accounting for 50% of the total amount of the microsphere precursor, adding divinylbenzene accounting for 5% of the total amount of the microsphere precursor, continuously stirring for 20min at the stirring speed of 1000r/min, and obtaining a slow-release body after the stirring is finished;
s3, preparation of sustained-release microspheres: and (3) feeding the microsphere precursor, the colloid and the sustained release body into a magnetic stirrer together for stirring, wherein the stirring temperature is increased to 75 ℃, the stirring speed is 1200r/min, and the stirring time is 30min, so as to obtain the sustained release microsphere.
The preparation method of the colloid of the embodiment comprises the following steps: adding starch into sodium hydroxide according to the weight ratio of 1:3, stirring at the rotating speed of 200r/min for 30min, then adding ammonia water to adjust the pH value of the solution to 11.0, then adding sodium sulfate accounting for 20% of the total amount of the starch, and continuing stirring for 20min at the stirring rotating speed of 250r/min to obtain the colloid.
The preparation method of the modification assistant in this embodiment is as follows: irradiating the nano silicon dioxide by protons for 20min, then adding vinyl trimethoxy silane accounting for 20% of the total amount of the nano silicon dioxide, stirring at 190r/min for 35min, adding acetone accounting for 3 times of the weight of the nano silicon dioxide, continuously stirring for 90min, and finally washing, centrifuging and drying to obtain the nano silicon dioxide.
The irradiation power of this embodiment was 250W.
The modification method of the modified bentonite in this example is: feeding bentonite into toluene of 3 times of the bentonite after vacuum drying at 45 ℃, ultrasonically dispersing for 30min with the ultrasonic power of 200W, then adding phytic acid of which the total amount is 20 percent of the bentonite, then reacting for 7h at 100 ℃ and 300rpm, filtering and drying to obtain the modified bentonite.
The solvent of this example was acetone.
Example 3:
the pest repellent comprises the following raw materials in parts by weight:
45 parts of epoxy resin, 7.5 parts of sodium dodecyl sulfate, 5 parts of slow release microspheres, 3 parts of triphenylethylene phenol polyoxyethylene ether, 2 parts of modified auxiliary agent, 3 parts of hexamethylene diisocyanate, 15 parts of solvent and 3.5 parts of modified bentonite.
The preparation method of the sustained-release microspheres comprises the following steps:
s1, preparing microsphere precursor: adding 7.5 parts of plant acid into 30 parts of deionized water to prepare a water phase, then adding 2 parts of tween 80 into 30 parts of 11% ethyl cellulose dichloromethane solution, stirring at the rotating speed of 1500r/min for 30min, then adding the water phase, then performing ultrasonic dispersion at the frequency of 35KHz for 7.5min, finally reacting at 40 ℃ for 1.5h at the rotating speed of 750r/min, and obtaining a microsphere initial body after the reaction and centrifugation;
s2, preparation of sustained release body: adding the microsphere precursor into a magnetic stirrer, adding benzisothiazolinone accounting for 10-20% of the total amount of the microsphere precursor, adding methyl parathion accounting for 20% of the total amount of the microsphere precursor, then adding a chitosan solution accounting for 45% of the total amount of the microsphere precursor, then adding divinylbenzene accounting for 3% of the total amount of the microsphere precursor, continuing stirring for 15min, wherein the stirring speed is 750r/min, and obtaining a slow-release body after the stirring is finished;
s3, preparation of sustained-release microspheres: and (3) feeding the microsphere precursor, the colloid and the sustained release body into a magnetic stirrer together for stirring, wherein the stirring temperature is increased to 70 ℃, the stirring speed is 1000r/min, and the stirring time is 5min, so as to obtain the sustained release microsphere.
The preparation method of the colloid of the embodiment comprises the following steps: adding starch into sodium hydroxide according to the weight ratio of 1:3, stirring at the rotating speed of 150r/min for 25min, then adding ammonia water to adjust the pH of the solution to 10.5, then adding sodium sulfate accounting for 15% of the total amount of the starch, and continuing stirring for 15min at the stirring rotating speed of 200r/min to obtain the colloid.
The preparation method of the modification assistant in this embodiment is as follows: irradiating the nano silicon dioxide by protons for 15min, then adding vinyl trimethoxy silane accounting for 15% of the total amount of the nano silicon dioxide, stirring for 30min at the speed of 170r/min, then adding acetone accounting for 2.5 times of the weight of the nano silicon dioxide, continuously stirring for 70min, and finally washing, centrifuging and drying to obtain the nano silicon dioxide.
The irradiation power of this example was 235W.
The modification method of the modified bentonite in this example is: feeding bentonite into toluene 2 times of the bentonite after vacuum drying at 42.5 ℃, ultrasonically dispersing for 25min with the ultrasonic power of 100-200W, then adding phytic acid accounting for 10-20% of the total amount of the bentonite, then reacting for 6h at 95 ℃ and 250rpm, filtering and drying to obtain the modified bentonite.
The solvent of this example was ethyl acetate.
Comparative example 1:
the materials and preparation process were substantially the same as those of example 3, except that the sustained-release microspheres were not added.
Comparative example 2:
the materials and preparation process were substantially the same as those of example 3, except that no modified bentonite was added.
Coating the aversion agent on the nursery stock, and then testing the aversion performance of pests;
the materials of examples 1-3 and comparative examples 1-2 were subjected to performance tests, the results of which are shown in Table 1
| Group of | Incidence of insect attack (%) | Effective time (sky) |
| Example 1 | 0.13 | 56 |
| Example 2 | 0.12 | 54 |
| Example 3 | 0.11 | 59 |
| Comparative example 1 | 0.47 | 47 |
| Comparative example 2 | 0.23 | 41 |
TABLE 1
As can be seen from Table 1, the products of examples 1-3 of the present invention showed as low an incidence of insect infestation as 0.13%, while the products of comparative examples 1-2 showed insect infestation rates of 0.47% and 0.23%, respectively, with an effective period of 59 days for example 3 and 41 days for comparative example 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The pest repellent is characterized by comprising the following raw materials in parts by weight:
40-50 parts of epoxy resin, 5-10 parts of sodium dodecyl sulfate, 2-8 parts of slow release microspheres, 1-5 parts of triphenylethylene phenol polyoxyethylene ether, 1-3 parts of a modified auxiliary agent, 1-5 parts of hexamethylene diisocyanate, 10-20 parts of a solvent and 1-6 parts of modified bentonite;
the preparation method of the sustained-release microspheres comprises the following steps:
s1, preparing microsphere precursor: adding 5-10 parts of plant acid into 25-35 parts of deionized water to prepare a water phase, then adding 1-3 parts of Tween 80 into 25-35 parts of 10-12% ethyl cellulose dichloromethane solution, stirring at the rotating speed of 2000r/min for 25-35min, then adding the water phase, then performing ultrasonic dispersion for 5-10min at the frequency of 30-40KHz, finally reacting at 35-45 ℃ for 1-2h at the rotating speed of 1000r/min, and obtaining a microsphere initial body after the reaction is finished and centrifugation;
s2, preparation of sustained release body: adding the microsphere precursor into a magnetic stirrer, adding benzisothiazolinone accounting for 10-20% of the total amount of the microsphere precursor, adding methyl parathion accounting for 15-25% of the total amount of the microsphere precursor, then adding a chitosan solution accounting for 40-50% of the total amount of the microsphere precursor, then adding divinylbenzene accounting for 1-5% of the total amount of the microsphere precursor, continuing stirring for 10-20min, wherein the stirring speed is 500-1000r/min, and finishing stirring to obtain a slow release body;
s3, preparation of sustained-release microspheres: and (3) feeding the microsphere primary body, the colloid and the slow release body into a magnetic stirrer together for stirring, wherein the stirring temperature is increased to 65-75 ℃, the stirring speed is 800-1200r/min, and the stirring time is 20-30min, so as to obtain the slow release microsphere.
2. The pest repellent according to claim 1, wherein the pest repellent comprises the following raw materials by weight percent:
42-48 parts of epoxy resin, 6-9 parts of sodium dodecyl sulfate, 3-7 parts of slow release microspheres, 2-4 parts of triphenylethylene phenol polyoxyethylene ether, 1.5-2.5 parts of a modification auxiliary agent, 2-4 parts of hexamethylene diisocyanate, 13-17 parts of a solvent and 2-5 parts of modified bentonite.
3. The pest repellent according to claim 1, wherein the pest repellent comprises the following raw materials by weight percent:
45 parts of epoxy resin, 7.5 parts of sodium dodecyl sulfate, 5 parts of slow release microspheres, 3 parts of triphenylethylene phenol polyoxyethylene ether, 2 parts of modified auxiliary agent, 3 parts of hexamethylene diisocyanate, 15 parts of solvent and 3.5 parts of modified bentonite.
4. The pest repellent according to claim 1, wherein said colloid is prepared by the steps of: adding starch into sodium hydroxide according to the weight ratio of 1:3, stirring at the rotation speed of 100-200r/min for 20-30min, then adding ammonia water to adjust the pH of the solution to 10.0-11.0, then adding sodium sulfate accounting for 10-20% of the total amount of the starch, and continuing stirring for 10-20min at the stirring rotation speed of 150-250r/min to obtain the colloid.
5. The pest repellent according to claim 1, wherein the modifying adjuvant is prepared by the following steps: irradiating the nano silicon dioxide by protons for 10-20min, then adding vinyl trimethoxy silane accounting for 10-20% of the total amount of the nano silicon dioxide, stirring at 190r/min for 25-35min at 150-.
6. The pest repellent according to claim 5, wherein said radiation power is 220-250W.
7. The pest repellent according to claim 1, wherein the modified bentonite is modified by the following method: the bentonite is sent to 40-45 ℃ for vacuum drying, added into toluene 1-3 times of the bentonite, ultrasonically dispersed for 20-30min with the ultrasonic power of 100-200W, added with phytic acid accounting for 10-20% of the total amount of the bentonite, reacted for 5-7h at 90-100 ℃ and 200-300rpm, filtered and dried to obtain the modified bentonite.
8. The pest repellent according to claim 1, wherein said solvent is a combination of one or more of ethanol, acetone, cycloethanone, and ethyl acetate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011518535.XA CN112521835A (en) | 2020-12-21 | 2020-12-21 | Pest repellent |
Applications Claiming Priority (1)
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| CN114128711A (en) * | 2021-12-30 | 2022-03-04 | 桂林市机电职业技术学校 | Preparation method of garden plant disease and pest control agent |
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| CN110982408A (en) * | 2019-12-25 | 2020-04-10 | 广东向诚新材料有限公司 | Polyurethane waterproof coating and preparation method thereof |
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| CN110982408A (en) * | 2019-12-25 | 2020-04-10 | 广东向诚新材料有限公司 | Polyurethane waterproof coating and preparation method thereof |
| CN111363439A (en) * | 2020-05-12 | 2020-07-03 | 安徽禾田电气有限公司 | High-low voltage power distribution cabinet anticorrosive coating and preparation method thereof |
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| CN114128711A (en) * | 2021-12-30 | 2022-03-04 | 桂林市机电职业技术学校 | Preparation method of garden plant disease and pest control agent |
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Application publication date: 20210319 |