CN107593698B - Bird repellent and preparation method thereof - Google Patents
Bird repellent and preparation method thereof Download PDFInfo
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- CN107593698B CN107593698B CN201710821187.5A CN201710821187A CN107593698B CN 107593698 B CN107593698 B CN 107593698B CN 201710821187 A CN201710821187 A CN 201710821187A CN 107593698 B CN107593698 B CN 107593698B
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Abstract
The invention relates to a bird repellent and a preparation method thereof, wherein the preparation method comprises the following steps: mixing an initiator with water to obtain a first mixed solution; mixing a polymerized monomer, a cross-linking agent, an emulsifier and water to obtain a second mixed solution; placing the first mixed solution and the second mixed solution in a reactor for polymerization reaction to obtain an intermediate; demulsifying, washing and drying the intermediate to obtain the resin; preparing a bird repellent agent: mixing the effective components with the resin to obtain the bird repellent. The bird repellent prepared by the invention adsorbs effective components in resin, has a slow release effect, and improves the effective use time.
Description
Technical Field
The invention relates to a bird repellent, in particular to a bird repellent and a preparation method thereof.
Background
Birds are one of the main hazards in the growth process of crops such as corn, paddy, fruits and vegetables, so that the crops are prevented from being damaged by the birds, and the yield and the quality of the crops are improved.
The bird repellent can effectively protect crops from being damaged by birds. The existing bird repellents comprise crude oil bird repellents, particle bird repellents, powder bird repellents, aqueous bird repellents and the like. The application method of the crude oil bird repellent comprises placing the crude oil bird repellent in an open container, such as a plastic container, and suspending the container on crops; the application method of the powder and aqueous bird repellent is generally that the bird repellent is applied by spraying after being diluted by water; the application method of the particle bird repellent comprises the steps of scattering bird repellent particles beside crops, or wrapping and hanging the bird repellent particles on the crops by gauze.
The bird repellent has the following problems in the using process: firstly, the crude oil bird repellent agent and the like are suspended in an open container due to the use method, and when the crude oil bird repellent agent, the granular bird repellent agent and the like are diluted by rainwater in rainy days, so that the pesticide effect is reduced, and even the crude oil bird repellent agent and the granular bird repellent agent are washed away by rainwater to lose the pesticide effect; secondly, because the field environment is wide, after the bird repellent agent of powder and aqua is sprayed, the smell is easily blown away by wind, the drug effect period is short, thereby increasing the manpower and material resources of putting.
Disclosure of Invention
The invention mainly aims to provide a bird repellent and a preparation method thereof, and aims to solve the technical problems of slowing down the release speed of the bird repellent and prolonging the effective use time of the bird repellent, so that the bird repellent is more practical.
The purpose of the invention and the technical problem to be solved are realized by adopting the following technical scheme.
The preparation method of the bird repellent provided by the invention comprises the following steps: mixing an initiator with water, or treating the water by using the initiator to obtain a first mixed solution; mixing a polymerized monomer, a cross-linking agent, an emulsifier and water to obtain a second mixed solution; placing the first mixed solution and the second mixed solution in a reactor for polymerization reaction to obtain an intermediate; demulsifying, washing and drying the intermediate to obtain the resin; preparing a bird repellent agent: mixing effective components with the resin to obtain the bird repellent, wherein the effective components are one or the combination of more than two of methyl anthranilate, cinnamaldehyde, camphor oil, nonivamide, borneol, bendinium, dimethyl phthalate, methyl salicylate, cyclohexanone, toluene, naphthalene, tert-butyl alcohol and eucalyptol.
The object of the present invention and the technical problems solved thereby can be further achieved by the following technical measures.
Preferably, in the preparation method of the bird repellent, the polymerized monomer, the crosslinking agent, the emulsifier and water are mixed and emulsified to obtain the second mixed solution, and further, the emulsifying method is stirring for 20-30min, and more preferably 25 min.
Preferably, in the preparation method of the bird repellent, the first mixed solution is divided into two parts, namely a first part and a second part, the first part is firstly added into the second mixed solution, the reaction is carried out at 70 ℃ for 25min, the remaining second part is dropwise added into the second mixed solution, the reaction is continued for 2h, the temperature is raised to 85 ℃, the reaction is carried out for 2h, and the polymerization reaction is finished to obtain the intermediate. Further, the mass ratio of the first part to the second part is 1: 1.
Preferably, in the preparation method of the bird repellent, after the effective component is mixed with the resin, the effective component is adsorbed by the resin, the volume of the resin is increased, and when the volume of the resin is not changed any more, the adsorption is completed, so that the bird repellent is obtained.
Preferably, in the preparation method of the bird repellent, the initiator includes one or a combination of two or more of potassium persulfate, benzoyl peroxide, azobisisobutyronitrile, lauroyl peroxide, di-tert-butyl peroxide, tert-butyl peroxybenzoate, methyl ethyl ketone peroxide, plasma and gamma rays; and/or the polymerized monomer comprises olefin monomers and/or acrylate monomers; and/or the cross-linking agent comprises one or the combination of more than two of divinylbenzene, N-methylene bisacrylamide, ethylene glycol diacrylate, ethylene glycol dimethacrylate, diisocyanate, hydroxyethyl acrylate and hydroxypropyl acrylate; and/or, the emulsifier comprises sodium dodecyl benzene sulfonate.
Preferably, in the preparation method of the bird repellent, the olefin monomer is a copolymer of long-chain olefin and styrene, wherein the molecular formula of the long-chain olefin is CnH2nN is not less than 4; or the acrylate monomer comprises a first acrylate monomer and/or a second acrylate monomer, wherein the first acrylate monomer comprises one or a combination of more than two of methyl acrylate, butyl acrylate, dodecyl acrylate and octadecyl acrylate; the second acrylic ester monomer comprises a copolymer of styrene and one or more of methyl methacrylate, butyl methacrylate, lauryl methacrylate and stearyl methacrylate.
Preferably, in the preparation method of the bird repellent, the long-chain olefin is cis-1, 4-butadiene.
Preferably, in the preparation method of the bird repellent, the mass ratio of the first mixed solution to the second mixed solution is: 1: 1-10.
Preferably, in the preparation method of the bird repellent, in the second mixed solution, the mass ratio of the polymerized monomer, the cross-linking agent and the emulsifier is: 1:0.01-0.1: 0.04-0.4.
Preferably, in the preparation method of the bird repellent, the reaction temperature of the polymerization reaction is 20-100 ℃, and the reaction time of the polymerization reaction is 2-10 h.
Preferably, in the preparation method of the bird repellent, the obtained intermediate is cooled to room temperature, and then sodium chloride is added to demulsify.
The object of the present invention and the technical problem to be solved are also achieved by the following technical means.
According to the bird repellent provided by the invention, the bird repellent is prepared by any one of the preparation methods.
By the technical scheme, the bird repellent and the preparation method thereof provided by the invention at least have the following advantages:
1. the invention provides a bird repellent, which can avoid interference of rainwater and moisture in air on effective components in the bird repellent.
The bird repellent provided by the invention comprises an oily effective component and a resin adsorbent, wherein the resin has high oil absorption, the surface of the resin is provided with oleophilic groups, and the oleophilic groups on the surface of the resin achieve a selective adsorption effect through intermolecular force between the oleophilic groups and molecules of the oily effective component, so that the adsorption of the effective component is facilitated; in addition, after the effective components are adsorbed by the resin in the bird repellent provided by the invention, the interior of the resin is swelled, and the swelling is physical volume change and does not chemically dissolve, so that a larger load is provided, and more effective components are adsorbed.
2. The bird repellent provided by the invention has a slow release effect and long lasting time.
The bird repellent provided by the invention has the advantages that the effective components are wrapped by resin, and the release process of the effective components is as follows: in the releasing process, the mass flow pushed by the concentration gradient or the pressure gradient of the effective components overcomes the binding of Van der Waals force between the resin and the methyl anthranilate to diffuse into the air, and along with the release of the loaded oily substance, the swelling part of the high oil absorption resin is reduced, thereby ensuring better slow release effect. Therefore, in the using process of the bird repellent provided by the invention, the effective components are slowly released, the using time is prolonged, meanwhile, the effective components are wrapped by resin, the interference of external factors such as rainwater and the like is avoided, and the effective using time is further prolonged.
3. The invention further provides a preparation method of the bird repellent, which is simple and suitable for industrial large-scale production.
4. The bird repellent provided by the invention is convenient to use.
The bird repellent provided by the invention is convenient to use, can be directly placed at a required position for use, such as a position of a crop branch, and does not need to be diluted, sprayed and the like, so that the labor is saved.
5. The resin in the bird repellent prepared by the invention can be repeatedly used.
The effective components with the bird repelling effect are adsorbed on the resin, the volume of the resin is increased in the adsorption process, and the volume of the resin is gradually reduced along with the release of the effective components in the use process of the bird repelling agent until the effective components are completely released. The resin obtained after complete release can be recycled and used for adsorbing the effective components again.
The foregoing is a summary of the present invention, and in order to provide a clear understanding of the technical means of the present invention and to be implemented in accordance with the present specification, the following is a detailed description of the preferred embodiments of the present invention.
Drawings
Fig. 1 is a flow chart of a preparation method of the bird repellent provided by embodiment 1 of the invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the bird repellent and the preparation method thereof according to the present invention with reference to the preferred embodiments will be made as follows. In the following description, different "one embodiment" or "an embodiment" refers to not necessarily the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
The invention provides a preparation method of a bird repellent and the bird repellent prepared by the preparation method. Wherein the preparation method comprises the following steps: mixing an initiator with water to obtain a first mixed solution; mixing a polymerized monomer, a cross-linking agent, an emulsifier and water to obtain a second mixed solution; placing the first mixed solution and the second mixed solution in a reactor for polymerization reaction to obtain an intermediate; demulsifying, washing and drying the intermediate to obtain the resin; preparing a bird repellent agent: mixing effective components with the resin to obtain the bird repellent, wherein the effective components are one or the combination of more than two of methyl anthranilate, cinnamaldehyde, camphor oil, nonivamide, borneol, bendinium, dimethyl phthalate, methyl salicylate, cyclohexanone, toluene, naphthalene, tert-butyl alcohol and eucalyptol.
It should be noted that the "initiator" herein may also be gamma rays. And when the initiator is gamma-ray, treating the gamma-ray to water to obtain treated water, namely the first mixed solution.
The invention loads the effective component with bird repelling effect on the resin, the loading process is that the prepared resin is immersed in the solution containing the effective component, the volume of the resin is expanded in the adsorption process, preferably, the ratio of the resin to the effective component is as follows by mass: 1: 1-40. The prepared bird repellent has a slow release effect, and the slow release time is 20-90 days. The bird repellent agent prepared by the method has different slow release time according to different contents of components in the resin or different sizes of the resin, and preferably the composite bird repellent agent has the size of 90-400cm3Or, the ratio of the resin to the effective components is 1: 10-30 to control the slow release time of the bird repellent prepared, so as not to cause the slow release time of the bird repellent to be overlong,causing waste of effective components and environmental pollution, the slow release time is mainly for crops or fruits, the bird invasion mainly occurs in the mature period of crops and fruits, such as apple, peach and plum mature period of two months, and the selectable volume is 385cm3The bird repellent and wheat are used in one month, and the volume is 160cm3The bird repellent agent is used for repelling birds. Further, the prepared bird repellent is applied every 100m2The dosage of the bird repellent is 100-1000 g.
Example 1
The embodiment provides a preparation method of a bird repellent and the bird repellent prepared by the preparation method.
The preparation method of the bird repellent provided by the embodiment is shown in fig. 1, and specifically comprises the following steps:
(1) weighing 2g of potassium persulfate, and adding 40ml of deionized water to prepare a potassium persulfate solution;
(2) weighing 22g of methyl methacrylate, 4g of styrene, 0.4g of divinylbenzene, 140m of L deionized water and 0.96g of sodium dodecyl benzene sulfonate, adding the methyl methacrylate, 4g of styrene, 0.4g of divinylbenzene, 140m of L deionized water and 0.96g of sodium dodecyl benzene sulfonate into a plastic beaker, emulsifying for 25min, transferring the mixture into a 500m L three-neck flask provided with a reflux condenser tube and a stirrer, adding 20m of L potassium persulfate solution into the flask, reacting for 25min at 70 ℃, dropwise adding the residual potassium persulfate solution into the three-neck flask, continuously reacting for 2h, heating to 85 ℃, reacting for 2h, cooling to room temperature after the reaction is finished, finally adding NaCl into the reacted solution, stirring and demulsifying, and drying in a drying box;
(3) and (3) putting the obtained high oil absorption resin into a bird repellent mainly comprising methyl anthranilate, and taking out the resin after the resin is not expanded any more to obtain the composite bird repellent material.
The volume of the composite bird repellent prepared by the embodiment is 385cm3Adsorbing an effective component (methyl anthranilate in the embodiment) with a bird repelling effect to obtain the bird repellent, wherein the mass ratio of the resin to the effective component in the obtained bird repellent is 1: 17.
The bird repellent prepared by the embodiment has a slow release effect, and the release time of the effective components is 60 days.
The bird repellent prepared by the embodiment is placed at the branch part of the apple tree to be used for dispelling birds invading the apple tree, and in the using process, the bird repellent is 100m2The application amount of the medium bird repellent is 400 g.
Example 2
The embodiment provides a preparation method of a bird repellent and the bird repellent prepared by the preparation method.
The preparation method of the bird repellent provided by the embodiment is shown in fig. 1, and specifically comprises the following steps:
(1) weighing 1.2g of potassium persulfate, and adding 40ml of deionized water to prepare a potassium persulfate solution;
(2) weighing 9.5g of butyl acrylate, 2g of styrene, 0.25g of divinylbenzene, 140m of L deionized water and 0.5g of sodium dodecyl benzene sulfonate, adding the butyl acrylate, the styrene, the divinylbenzene, the 140m of L deionized water and the 0.5g of sodium dodecyl benzene sulfonate into a plastic beaker, emulsifying for 30min, transferring the mixture into a 500m L three-neck flask provided with a reflux condenser and a stirrer, adding 20m of L potassium persulfate solution into the flask, reacting for 25min at 70 ℃, dropwise adding the residual potassium persulfate solution into the three-neck flask, continuously reacting for 2h, heating to 85 ℃, then reacting for 2h, cooling to room temperature after the reaction is finished, finally adding NaCl into the reacted solution, stirring and demulsifying, and drying in a drying box;
(3) and (3) putting the obtained high oil absorption resin into a bird repellent mainly comprising methyl anthranilate, and taking out the resin after the resin is not expanded any more to obtain the composite bird repellent material.
The volume of the composite bird repellent prepared by the embodiment is 160cm3Adsorbing an effective component (methyl anthranilate in the embodiment) with a bird repelling effect to obtain the bird repellent, wherein the mass ratio of the resin to the effective component in the obtained bird repellent is 1: 15.
The bird repellent prepared by the embodiment has a slow release effect, and the release time of the effective components is 30 days.
The bird repellent prepared by the embodiment is placed at the branch part of the apple tree to be used for dispelling birds invading the apple tree, and in the using process, the bird repellent is 100m2The application amount of the medium bird repellent is 160 g.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
It will be appreciated that the relevant features of the devices described above may be referred to one another. In addition, "first", "second", and the like in the above embodiments are for distinguishing the embodiments, and do not represent merits of the embodiments.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination. The various component embodiments of the present invention may be implemented in hardware, or in a combination thereof.
The recitation of numerical ranges herein includes all numbers subsumed within that range and includes any two numbers subsumed within that range. For example, "the polymerization reaction temperature is 20 to 100 ℃", this range of values includes all values between 20 and 100, and includes any two values (e.g., 50, 60) within this range as a combined range of values (50 to 60); different values of the same index appearing in all embodiments of the invention can be combined arbitrarily to form a range value.
The features of the invention claimed and/or described in the specification may be combined, and are not limited to the combinations set forth in the claims by the recitations therein. The technical solutions obtained by combining the technical features in the claims and/or the specification also belong to the scope of the present invention.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiment according to the technical spirit of the present invention are still within the scope of the technical solution of the present invention.
Claims (8)
1. A preparation method of a bird repellent is characterized by comprising the following steps: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
preparation of resin: mixing an initiator with water to obtain a first mixed solution; mixing a polymerized monomer, a cross-linking agent, an emulsifier and water to obtain a second mixed solution; placing the first mixed solution and the second mixed solution in a reactor for polymerization reaction to obtain an intermediate; demulsifying, washing and drying the intermediate to obtain the resin; wherein the polymerized monomer comprises an olefin monomer and an acrylate monomer; the olefin monomer is styrene; the acrylate monomer is methyl methacrylate;
preparing a bird repellent agent: mixing an effective component with the resin, wherein the effective component is loaded by immersing the resin into a solution containing the effective component to obtain the bird repellent, wherein the effective component is methyl anthranilate;
the ratio of the resin to the effective component is 1: 10-17.
2. The preparation method of the bird repellent according to claim 1, characterized in that:
after the effective components are mixed with the resin, the effective components are adsorbed by the resin, the volume of the resin is increased, and when the volume of the resin is not changed any more, the adsorption is finished, so that the bird repellent is obtained.
3. The preparation method of the bird repellent according to claim 1, characterized in that:
the initiator comprises one or the combination of more than two of potassium persulfate, benzoyl peroxide, azodiisobutyronitrile, lauroyl peroxide, di-tert-butyl peroxide, tert-butyl peroxybenzoate, methyl ethyl ketone peroxide and plasma; and/or the presence of a gas in the gas,
the cross-linking agent comprises one or the combination of more than two of divinylbenzene, N-methylene bisacrylamide, ethylene glycol diacrylate, ethylene glycol dimethacrylate, diisocyanate, hydroxyethyl acrylate and hydroxypropyl acrylate; and/or the presence of a gas in the gas,
the emulsifier comprises sodium dodecyl benzene sulfonate.
4. The preparation method of the bird repellent according to claim 1, characterized in that:
the mass ratio of the first mixed solution to the second mixed solution is 1: 1-10.
5. The preparation method of the bird repellent according to claim 1, characterized in that:
in the second mixed solution, the mass ratio of the polymerized monomer, the cross-linking agent and the emulsifying agent is as follows: 1:0.01-0.1:0.04-0.4.
6. The preparation method of the bird repellent according to claim 1, characterized in that:
the reaction temperature of the polymerization reaction is 20-100 ℃, and the reaction time of the polymerization reaction is 2-10 h.
7. The preparation method of the bird repellent according to claim 1, characterized in that:
and cooling the obtained intermediate to room temperature, and adding sodium chloride for demulsification.
8. A bird repellent is characterized in that:
the bird repellent is prepared by the preparation method of any one of claims 1-7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108378015A (en) * | 2018-02-24 | 2018-08-10 | 王鹏飞 | A kind of coating method of particle bird repellent |
| CN109169658A (en) * | 2018-08-29 | 2019-01-11 | 西安高科理化技术有限责任公司 | A kind of gel-type sustained release bird repellent and preparation method thereof |
| CN111466418B (en) * | 2020-04-30 | 2021-09-24 | 国网河南省电力公司镇平县供电公司 | Reflective slow-release bird repellent composition and preparation method thereof |
| CN111793287A (en) * | 2020-07-08 | 2020-10-20 | 江阴海达橡塑股份有限公司 | Ethylene propylene diene monomer rubber skylight sealing strip for preventing birds from invading and preparation method thereof |
| CN115336600A (en) * | 2022-08-17 | 2022-11-15 | 安徽耕耘乐生物科技有限公司 | Fruit tree healing agent with mixed bird repelling function and application thereof |
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| CN103070202A (en) * | 2012-12-26 | 2013-05-01 | 广东电网公司潮州供电局 | Bird repellent and preparation method thereof |
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| CN103070202A (en) * | 2012-12-26 | 2013-05-01 | 广东电网公司潮州供电局 | Bird repellent and preparation method thereof |
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