CN112674084A - Environment-friendly pesticide composition and preparation method thereof - Google Patents
Environment-friendly pesticide composition and preparation method thereof Download PDFInfo
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Abstract
The invention provides an environment-friendly pesticide composition and a preparation method thereof, wherein the environment-friendly pesticide composition is prepared from the following raw materials in parts by weight: 10-40 parts of pesticide active ingredients, 5-60 parts of oil phase, 10-40 parts of surfactant and 5-20 parts of cosurfactant; the pesticide active ingredients comprise a component 1 and a component 2; wherein the component 1 is a mixture of pyrethrin, trehalose, octadecyl trimethyl ammonium chloride, pyriproxyfen and benzene sulfonate, and the component 2 is a mixture of graphene quantum dots, oxine-copper, chitosan, matrine, rosemary oil, lavender and agilawood powder. The invention realizes double effects of insect killing and sterilization by preparing the microemulsion pesticide composition, and has no pollution to the environment.
Description
Technical Field
The invention belongs to the technical field of pesticides, and particularly relates to an environment-friendly pesticide composition and a preparation method thereof.
Background
Along with the improvement of living standard and the enhancement of environmental protection consciousness of people, the market space of pollution-free agricultural products is larger and larger. However, pesticide contamination has become a limiting factor in the production of pollution-free agricultural products. In recent years, with the adjustment of the structure of the planting industry, the production conditions and the structures of disease and insect populations are changed, the area of disease and insect pests is increased year by year, and the damage degree is more and more serious. In order to control the occurrence of plant diseases and insect pests, part of farmers abuse pesticides in violation of operation, and hidden danger is left for the production of pollution-free agricultural products; in addition, the pesticide is unscientific and is singly used for a long time, so that the pesticide resistance of pests is increased, the pesticide effect is reduced, and the pollution of pesticides to air, water sources and agricultural products is caused.
The existing domestic sterilization and disinfection pesticides are chemical pesticides, and a large amount of toxins are easy to remain in crops, vegetables and fruits by using the pesticides, so that the natural environment is seriously polluted, the natural environment and ecological balance are damaged, the pollution is formed, the living environment of human is directly threatened, and the development of green agriculture and green food is not facilitated.
In recent years, some green pesticides have been developed, but these pesticides have relatively weak insecticidal and disinfectant effects, and do not have the functions of promoting growth and strengthening of crops, and the production process is relatively complex, the raw materials are expensive, the cost is high, the production scale is greatly limited, and the popularization and implementation are difficult.
For example, chinese application CN 02114170.3 discloses a pollution-free broad-spectrum insecticidal and bactericidal soluble powder precursor pesticide and a production method thereof, wherein the pesticide comprises an active substance and various auxiliary agents, the active substance is a complex formed by activating a cationic surfactant with organic iodine, and the active substance is a complex formed by activating an anionic surfactant with organic silicon. The pesticide has the problems of complex raw material components and high production cost, and particularly has the defect that the pesticide has less ideal effect on preventing and treating diseases and insect pests of fruit trees, vegetables and crops; the organic iodine contained therein has a negative effect on the normal growth of crops.
The Chinese application CN201810380031.2 discloses a compound biological pesticide for rice, which comprises the following raw materials: methanol extract of inula cappa, petroleum ether extract of Chinese spikenard, thiediazole copper, celastrus angulatus microemulsion, azadirachtin emulsifiable concentrate, cedar essential oil, bacillus thuringiensis, chitosan, auxiliary agent, stabilizer and the balance of 90% ethanol solution. Has no harm to crops and the like, is safe to use and has little influence on the ecological environment. But its application in sterilization has certain limitations.
The microemulsion is a new pesticide formulation appearing abroad in the 80 th age of the 20 th century, and is an environment-friendly green pesticide preparation. It uses water as matrix, does not use or only uses a small quantity of organic solvent, contains proper quantity of surfactant and other adjuvant, is a transparent single-phase liquid, belongs to a dispersion system with thermodynamic stability, and is non-inflammable, non-explosive, safe in production operation and storage and transportation and less in environmental pollution. The microemulsion takes water as a main solvent, so that a large amount of organic solvents are saved, the pressure on the environment is greatly reduced after the microemulsion is applied, the microemulsion has important significance for maintaining the agricultural ecological environment and is beneficial to the sustainable development of agriculture.
In view of the above, there is a need to research an environment-friendly pesticide composition with insecticidal and bactericidal effects, which not only has dual effects of insecticidal and bactericidal, but also is safe in use and free from environmental pollution.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides an environment-friendly pesticide composition and a preparation method thereof, and the microemulsion pesticide composition is prepared to achieve double effects of killing insects and killing bacteria and has no pollution to the environment.
In order to solve the technical problems, the invention provides the following technical scheme:
on one hand, the invention provides an environment-friendly pesticide composition which is prepared from the following raw materials in parts by weight: 10-40 parts of pesticide active ingredients, 5-60 parts of oil phase, 10-40 parts of surfactant and 5-20 parts of cosurfactant.
Further, the pesticide active ingredient comprises a component 1 and a component 2; wherein the component 1 is a mixture of pyrethrin, trehalose, octadecyl trimethyl ammonium chloride, pyriproxyfen and benzene sulfonate, and the component 2 is a mixture of graphene quantum dots, oxine-copper, chitosan, matrine, rosemary oil, lavender and agilawood powder.
Further, in the component 1, by weight, 10-20 parts of pyrethrin, 5-15 parts of trehalose, 8-12 parts of octadecyl trimethyl ammonium chloride, 10-20 parts of pyriproxyfen and 1-10 parts of benzene sulfonate.
Further, in the component 2, by weight, 10-20 parts of graphene quantum dots, 5-12 parts of oxine-copper, 5-10 parts of chitosan, 5-10 parts of matrine, 5-20 parts of rosemary essential oil and 1-5 parts of lavender are included.
Further, the oil phase is selected from one or more of peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil and soybean oil.
Further, the emulsifier is selected from one or more of tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin.
Further, the coemulsifier is selected from one or more of ethanol, isopropanol and PEG 400.
Further, the oil phase is a mixture of peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil and soybean oil.
Further, the emulsifier is a mixture of tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin. The emulsifier of the invention mixes the oil phase and the co-emulsifier to form a stable emulsion carrier, and then coats the pesticide active ingredient therein. Particularly in the emulsification process by water dilution, the dispersed phase is dispersed in the continuous phase in the form of droplets (micron-sized), and the emulsifier reduces the interfacial tension of the components in the mixed system and forms a firmer film on the surface of the droplets or forms an electric double layer on the surface of the droplets due to the electric charge given by the emulsifier, preventing the droplets from aggregating with each other, thereby maintaining a uniform emulsion.
Further, the coemulsifier is a mixture of ethanol, isopropanol and PEG 400. The auxiliary emulsifier can ensure that the oil-water interfacial tension in the liquid drops is reduced sharply in the process of diluting the pharmaceutical composition with water, so that the stability of the formed pharmaceutical composition can be ensured while the particle size of the formed microemulsion is kept small.
Furthermore, the oil phase comprises, by weight, 5-15 parts of peppermint oil, 5-15 parts of corn oil, 5-15 parts of sunflower oil, 5-15 parts of sesame oil, 5-15 parts of peanut oil and 5-15 parts of soybean oil.
Furthermore, the emulsifier comprises, by weight, 10-20 parts of tween, 10-10 parts of organic silicon Silwet L-774, 5-15 parts of egg yolk lecithin and 5-15 parts of soybean lecithin.
Furthermore, the coemulsifier comprises, by weight, 5-10 parts of ethanol, 5-10 parts of isopropanol and 5-10 parts of PEG 400.
On one hand, the invention provides a preparation method of an environment-friendly pesticide composition, which comprises the following steps:
1) adding the oil phase, the emulsifier and the co-emulsifier in sequence, mixing to obtain a transparent carrier emulsion,
2) respectively mixing the component 1 and the component 2 uniformly, and further mixing uniformly to obtain pesticide active components;
3) and adding the pesticide active ingredient into the transparent carrier emulsion under stirring, and uniformly mixing to obtain the pesticide composition.
Furthermore, in the oil phase, the peppermint oil, the corn oil, the sunflower oil, the sesame oil, the peanut oil and the soybean oil are uniformly mixed. Mixing various vegetable oils, and using the prepared oil phase for preparing a carrier to coat pesticide active ingredients, so as to be beneficial to attracting pests.
Furthermore, in the emulsifier, Tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin are uniformly mixed.
Further, in the co-emulsifier, ethanol, isopropanol and PEG400 are uniformly mixed.
The pesticide active ingredients comprise a component 1 and a component 2; wherein the component 1 is a mixture of pyrethrin, trehalose, octadecyl trimethyl ammonium chloride, pyriproxyfen and benzene sulfonate, and the component 2 is a mixture of graphene quantum dots, oxine-copper, chitosan, matrine, rosemary oil, lavender and agilawood powder.
The component 1 and the component 2 are mixed and cooperate with each other, so that the subsequent O/W microemulsion is formed, for example, chitosan can not only avoid the agglomeration of graphene quantum dots, but also load matrine, and the stability of insecticidal components is improved; the graphene quantum dots have the function of adsorbing bacteria, and the mutual mixing effect of the rosemary essential oil, the lavender and the agilawood powder can not only cover the smell of crops, but also attract pests. The addition of the trehalose can maintain the long-acting prevention and control of plant diseases and insect pests and pathogenic bacteria, and attract pests for practical use; pyrethrin, octadecyl trimethyl ammonium chloride, pyriproxyfen, benzene sulfonate are stable in the air, form the microemulsion to adhere to the surface of crops, can prevent and cure for a long time;
the active ingredients of the pesticide are coated in the transparent carrier emulsion to form the pesticide composition, and when the pesticide composition is used, the pesticide composition is slowly added into water under stirring to form uniform and transparent O/W microemulsion with the liquid, the particle size is 50-500 nm, a colloidal solution is uniform and stable in a spraying process, the permeation and expansion are greatly improved, the utilization rate of the pesticide is improved, and meanwhile instruments in modern agriculture cannot be blocked. The microemulsion formed by the invention wraps pesticide active ingredient molecules in a carrier, sprayed nanoemulsion is attached to the body surface of crops, the oil phase and the pesticide active ingredient cover the smell of the crops, the sense of pests is blurred, after the pests contact the crops, the pesticide composition is adhered to the body surface of the pests, the nanoemulsion molecules can be directly changed into active penetration and transportation from original passive diffusion and transportation, and the active penetration of the pest epidermis layer into the body of the pests can achieve the effect of killing the pests; the nanoemulsion attached to the body surface of crops can kill attached pathogenic bacteria, directly transfers the pathogenic bacteria into the pathogenic bacteria through active penetration to achieve the purpose of killing the pathogenic bacteria, and can be widely applied to the prevention and control of plant diseases and insect pests, pathogenic bacteria and the like of economic crops such as green vegetables, fruits, tea leaves, rice and the like.
The O/W type microemulsion is attached to the surface of crops and slowly released in pests and pathogenic bacteria to achieve the effect of gradually killing the pests. By adopting the microemulsion for slow release, the sustained effectiveness of the pesticide can be maintained, the pesticide application interval is enlarged, and the pollution to the environment and the toxicity of crops are reduced.
Compared with the prior patent CN201710734655.5, the applicant of the invention improves on the basis of the prior patent CN201710734655.5 to prepare the microemulsion pesticide composition, the mechanism and the effect of the microemulsion pesticide composition on pests and pathogenic bacteria are completely different, and the microemulsion pesticide composition automatically disperses in water to form microemulsion during the use process to spontaneously form a homogeneous dispersion system with isotropy, transparency and thermodynamic stability. 7 days after spraying, the prevention and control effect of the sprayed object on pests reaches 90.3 percent, and the protection effect on germs reaches 95.8 percent; after 30 days of spraying, the protective effect on plant diseases and insect pests reaches 99.7 percent.
The invention selects specific oil phase, emulsifier and auxiliary emulsifier, and combines them according to a certain proportion to prepare transparent carrier emulsion, and then adds pesticide active component into the transparent carrier emulsion to prepare the pesticide composition. The pesticide composition disclosed by the invention is diluted by water to obtain the nano self-microemulsion with high self-emulsifying capacity, and can be applied to pesticides. The diluted self-microemulsion can be sprayed on crops, so that the phenomenon of drug precipitation can not occur, the self-microemulsion is uniformly dispersed, and the insecticidal and sterilization effects can be enhanced.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
Stability test:
the environment-friendly pesticide composition is prepared into 50ml, 10ml is divided into five bottles and sealed, the bottles are respectively stored for two weeks under the conventional conditions, cold storage (0 +/-1 ℃), hot storage (54 +/-2 ℃), normal-temperature ultraviolet ray irradiation for 24 hours and 70% humidity, a gas chromatography-mass spectrometer is adopted to analyze the content of each component before storage, and the bottles are analyzed again after being stored for 30 days.
And (4) conclusion: before and after storage, the contents of the components are almost unchanged, which shows that the environment-friendly pesticide composition prepared by the invention has good stability.
Orchard drug effect experiment:
the pesticide composition mentioned in patent CN201710734655.5 is used as a comparison group;
the pesticidal composition of any one of examples 1 to 3 was used as the experimental group;
adopting clear water as a blank group;
selecting a plurality of experimental cells, simultaneously determining 1 experimental cell as a blank area, diluting the pesticide composition by 2000 times of water, directly spraying the diluted pesticide composition on crop plants by using a sprayer, and investigating the number of live insects 1 day before spraying and 7 days, 15 days and 30 days after spraying, wherein the experimental crop is citrus.
And (4) conclusion: 7 days after the pesticide composition prepared by the invention is sprayed, the control effect of the sprayed object on pests reaches 90.3%, and the protection effect on pathogenic bacteria reaches 95.8%; after 30 days of spraying, the protective effect on plant diseases and insect pests reaches 99.7 percent. The control effect of the control group is obviously reduced after 15 days. Meanwhile, the pesticide composition has a killing effect on pests such as aphids, aedes albopictus, plant hoppers, caterpillars, pieris rapae, trialeurodes vaporariorum, cabbage caterpillars, simian leafworms, culex pipiens pallens, red spiders and the like.
Example 1
An environment-friendly pesticide composition is composed of the following raw materials in parts by weight: 40 parts of pesticide active ingredients, 5 parts of oil phase, 40 parts of surfactant and 5 parts of cosurfactant;
in the pesticide active ingredients, the ingredient 1 comprises, by weight, 10 parts of pyrethrin, 15 parts of trehalose, 8 parts of octadecyl trimethyl ammonium chloride, 20 parts of pyriproxyfen and 1 part of benzene sulfonate;
in the pesticide active ingredients, the ingredient 2 comprises, by weight, 20 parts of graphene quantum dots, 5 parts of oxine-copper, 10 parts of chitosan, 5 parts of matrine, 20 parts of rosemary essential oil and 1 part of lavender;
in the oil phase, 5 parts of peppermint oil, 15 parts of corn oil, 5 parts of sunflower oil, 15 parts of sesame oil, 5 parts of peanut oil and 15 parts of soybean oil in parts by weight;
in the emulsifier, by weight, 10 parts of tween, 15 parts of egg yolk lecithin and 15 parts of soybean lecithin are added, wherein the organic silicon Silwet L-7710 is added;
in the coemulsifier, 5 parts of ethanol, 10 parts of isopropanol and 5 parts of PEG 4005 are calculated according to parts by weight.
The preparation steps of the pesticide composition are as follows:
in the oil phase, peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil and soybean oil are uniformly mixed;
in the emulsifier, tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin are mixed uniformly;
in the auxiliary emulsifier, ethanol, isopropanol and PEG400 are mixed uniformly;
adding the oil phase, the emulsifier and the co-emulsifier in sequence, mixing to obtain a transparent carrier emulsion,
respectively mixing the component 1 and the component 2 uniformly, and further mixing uniformly to obtain pesticide active components;
and adding the pesticide active ingredient into the transparent carrier emulsion under stirring, and uniformly mixing to obtain the pesticide composition.
Example 2
An environment-friendly pesticide composition is composed of the following raw materials in parts by weight: 10 parts of pesticide active ingredients, 60 parts of oil phase, 10 parts of surfactant and 20 parts of cosurfactant;
in the pesticide active ingredients, the ingredient 1 comprises, by weight, 20 parts of pyrethrin, 5 parts of trehalose, 12 parts of octadecyl trimethyl ammonium chloride, 10 parts of pyriproxyfen and 10 parts of benzene sulfonate;
in the pesticide active ingredients, the ingredient 2 comprises 10 parts of graphene quantum dots, 12 parts of oxine-copper, 5 parts of chitosan, 10 parts of matrine, 5 parts of rosemary essential oil and 5 parts of lavender according to parts by weight;
in the oil phase, according to parts by weight, 15 parts of peppermint oil, 5 parts of corn oil, 15 parts of sunflower oil, 5 parts of sesame oil, 15 parts of peanut oil and 5 parts of soybean oil;
in the emulsifier, 20 parts of tween, 15 parts of organic silicon Silwet L-774, 15 parts of egg yolk lecithin and 5 parts of soybean lecithin are calculated according to parts by weight;
in the coemulsifier, by weight, 10 parts of ethanol, 10 parts of isopropanol and 10 parts of PEG 40010.
The preparation steps of the pesticide composition are as follows:
in the oil phase, peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil and soybean oil are uniformly mixed;
in the emulsifier, tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin are mixed uniformly;
in the auxiliary emulsifier, ethanol, isopropanol and PEG400 are mixed uniformly;
adding the oil phase, the emulsifier and the co-emulsifier in sequence, mixing to obtain a transparent carrier emulsion,
respectively mixing the component 1 and the component 2 uniformly, and further mixing uniformly to obtain pesticide active components;
and adding the pesticide active ingredient into the transparent carrier emulsion under stirring, and uniformly mixing to obtain the pesticide composition.
Example 3
An environment-friendly pesticide composition is composed of the following raw materials in parts by weight: 30 parts of pesticide active ingredients, 50 parts of oil phase, 20 parts of surfactant and 10 parts of cosurfactant;
in the pesticide active ingredients, the ingredient 1 comprises, by weight, 15 parts of pyrethrin, 10 parts of trehalose, 10 parts of octadecyl trimethyl ammonium chloride, 15 parts of pyriproxyfen and 8 parts of benzene sulfonate;
in the pesticide active ingredients, the component 2 comprises 15 parts of graphene quantum dots, 10 parts of oxine-copper, 8 parts of chitosan, 8 parts of matrine, 10 parts of rosemary essential oil and 10 parts of lavender according to parts by weight;
in the oil phase, by weight, 10 parts of peppermint oil, 10 parts of corn oil, 10 parts of sunflower oil, 5 parts of sesame oil, 10 parts of peanut oil and 10 parts of soybean oil;
in the emulsifier, 15 parts of tween, 9 parts of egg yolk lecithin and 10 parts of soybean lecithin are counted according to parts by weight;
in the coemulsifier, 8 parts of ethanol, 7 parts of isopropanol and 9 parts of PEG 4009 are calculated according to parts by weight.
The preparation steps of the pesticide composition are as follows:
in the oil phase, peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil and soybean oil are uniformly mixed;
in the emulsifier, tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin are mixed uniformly;
in the auxiliary emulsifier, ethanol, isopropanol and PEG400 are mixed uniformly;
adding the oil phase, the emulsifier and the co-emulsifier in sequence, mixing to obtain a transparent carrier emulsion,
respectively mixing the component 1 and the component 2 uniformly, and further mixing uniformly to obtain pesticide active components;
and adding the pesticide active ingredient into the transparent carrier emulsion under stirring, and uniformly mixing to obtain the pesticide composition.
Example 4
An environment-friendly pesticide composition is composed of the following raw materials in parts by weight: 25 parts of pesticide active ingredient, 55 parts of oil phase, 38 parts of surfactant and 17 parts of cosurfactant;
in the pesticide active ingredients, the ingredient 1 comprises, by weight, 12 parts of pyrethrin, 15 parts of trehalose, 12 parts of octadecyl trimethyl ammonium chloride, 20 parts of pyriproxyfen and 10 parts of benzene sulfonate;
in the pesticide active ingredients, the component 2 comprises 15 parts of graphene quantum dots, 8 parts of oxine-copper, 8 parts of chitosan, 8 parts of matrine, 10 parts of rosemary essential oil and 2 parts of lavender according to parts by weight;
in the oil phase, by weight, 10 parts of peppermint oil, 8 parts of corn oil, 9 parts of sunflower oil, 7 parts of sesame oil, 6 parts of peanut oil and 10 parts of soybean oil are counted;
in the emulsifier, 15 parts of tween, 7 parts of egg yolk lecithin and 11 parts of soybean lecithin are counted according to parts by weight;
in the coemulsifier, 8 parts of ethanol, 8 parts of isopropanol and 8 parts of PEG 4008 are calculated according to parts by weight.
The preparation steps of the pesticide composition are as follows:
in the oil phase, peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil and soybean oil are uniformly mixed;
in the emulsifier, tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin are mixed uniformly;
in the auxiliary emulsifier, ethanol, isopropanol and PEG400 are mixed uniformly;
adding the oil phase, the emulsifier and the co-emulsifier in sequence, mixing to obtain a transparent carrier emulsion,
respectively mixing the component 1 and the component 2 uniformly, and further mixing uniformly to obtain pesticide active components;
and adding the pesticide active ingredient into the transparent carrier emulsion under stirring, and uniformly mixing to obtain the pesticide composition.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention, and these changes and modifications are also considered to be included in the scope of the invention.
Claims (10)
1. The environment-friendly pesticide composition is characterized by comprising the following raw materials in parts by weight: 10-40 parts of pesticide active ingredients, 5-60 parts of oil phase, 10-40 parts of surfactant and 5-20 parts of cosurfactant;
the pesticide active ingredients comprise a component 1 and a component 2; wherein the component 1 is a mixture of pyrethrin, trehalose, octadecyl trimethyl ammonium chloride, pyriproxyfen and benzene sulfonate; the component 2 is a mixture of graphene quantum dots, oxine-copper, chitosan, matrine, rosemary essential oil, lavender and agilawood powder.
2. The environment-friendly pesticide composition as set forth in claim 1, wherein the component 1 comprises, by weight, 10-20 parts of pyrethrin, 5-15 parts of trehalose, 8-12 parts of octadecyl trimethyl ammonium chloride, 10-20 parts of pyriproxyfen and 1-10 parts of benzenesulfonate.
3. The environment-friendly pesticide composition as defined in claim 1, wherein the component 2 comprises, by weight, 10-20 parts of graphene quantum dots, 5-12 parts of oxine-copper, 5-10 parts of chitosan, 5-10 parts of matrine, 5-20 parts of rosemary oil, and 1-5 parts of lavender.
4. The eco-friendly pesticide composition as set forth in claim 1, wherein the oil phase is one or more selected from the group consisting of peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil, soybean oil;
the emulsifier is selected from one or more of tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin;
the coemulsifier is selected from one or more of ethanol, isopropanol and PEG 400.
5. The eco-friendly pesticide composition according to claim 4, wherein the oil phase is a mixture of peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil, soybean oil;
the emulsifier is a mixture of tween, organic silicon Silwet L-77, egg yolk lecithin and soybean lecithin;
the coemulsifier is a mixture of ethanol, isopropanol and PEG 400.
6. The environment-friendly pesticide composition as set forth in claim 5, wherein the oil phase comprises, by weight, 5-15 parts of peppermint oil, 5-15 parts of corn oil, 5-15 parts of sunflower oil, 5-15 parts of sesame oil, 5-15 parts of peanut oil and 5-15 parts of soybean oil;
in the emulsifier, by weight, 10-20 parts of tween, 5-15 parts of egg yolk lecithin and 5-15 parts of soybean lecithin are added, and the mixture is subjected to emulsification;
in the coemulsifier, 5-10 parts of ethanol, 5-10 parts of isopropanol and 5-10 parts of PEG 400by weight.
7. A method for preparing the environment-friendly pesticide composition as claimed in any one of claims 1 to 6, which is characterized by comprising the following steps:
1) adding the oil phase, the emulsifier and the co-emulsifier in sequence, mixing to obtain a transparent carrier emulsion,
2) respectively mixing the component 1 and the component 2 uniformly, and further mixing uniformly to obtain pesticide active components;
3) and adding the pesticide active ingredient into the transparent carrier emulsion under stirring, and uniformly mixing to obtain the pesticide composition.
8. The method for preparing environment-friendly pesticide composition as claimed in claim 7, wherein the oil phase is prepared by mixing peppermint oil, corn oil, sunflower oil, sesame oil, peanut oil and soybean oil uniformly.
9. The method for preparing environment-friendly pesticide composition according to claim 7, wherein tween, silicone Silwet L-77, egg yolk lecithin and soybean lecithin are mixed uniformly in the emulsifier.
10. The method for preparing environment-friendly pesticide composition as claimed in claim 7, wherein ethanol, isopropanol and PEG400 are mixed uniformly in the co-emulsifier.
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| CN107455390A (en) * | 2017-08-24 | 2017-12-12 | 湖南淼农环保科技发展有限公司 | Composition pesticide of environment-protecting pesticide sterilization and preparation method thereof |
| CN108770842A (en) * | 2018-05-31 | 2018-11-09 | 湖北归然生物科技有限公司 | The preparation method of high efficiency high stable 2% pyrethrin and matrine compound microemulsion |
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