CN116019108A - Water-soluble polymer coated slow-release solid bird repellent and preparation method and application thereof - Google Patents
Water-soluble polymer coated slow-release solid bird repellent and preparation method and application thereof Download PDFInfo
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- CN116019108A CN116019108A CN202211682124.3A CN202211682124A CN116019108A CN 116019108 A CN116019108 A CN 116019108A CN 202211682124 A CN202211682124 A CN 202211682124A CN 116019108 A CN116019108 A CN 116019108A
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Abstract
The invention provides a water-soluble polymer coated slow-release solid bird repellent and a preparation method and application thereof, belonging to the technical field of bird repelling. In the solid bird repellent provided by the invention, the water-soluble polymer material can be coated on the surface of the bird repellent active ingredient to form a film, the plant adhesive is easy to form a space network bonding structure after absorbing water, the polymer film coated on the surface layer of the active bird repellent ingredient is dried by absorbing water, so that the polymer is precipitated, active bird repellent particles are coated into a reversible microcapsule structure, and the microcapsule is opened under the action of self degradation or rainwater under natural conditions to release the bird repellent active ingredient in the microcapsule, thereby achieving the purposes of long lasting time and uniform slow release.
Description
Technical Field
The invention relates to the technical field of bird repellent, in particular to a water-soluble polymer coated slow-release solid bird repellent, a preparation method and application thereof.
Background
With the enhancement of ecological environment optimization, people's environmental awareness, the population quantity of birds is continuously increased, but in fields such as airport, agriculture, high-speed railway and electric power, the frequent occurrence of safety accidents caused by bird activities is brought, and huge economic losses are brought, especially in the airport, the accident symptoms caused by bird strikes are 1/3 of all the accident symptoms of the aircraft, and the airport has to construct a professional bird driving department, and a great deal of manpower and material resources are spent to implement bird driving activities.
At present, in the industry, the bird is driven by laser, gas gun, titanium bomb or different devices such as shotgun, which are expensive and can damage airport workers and birds. In addition, the sound wave equipment is generally opened and has extremely high sound pressure, so that noise pollution is caused, and the production and the life of villagers around an airport are puzzled. In addition, another mode is to spread bird repellent, and the bird repellent emits the smell of bird aversion, so that allergic reactions such as rejection, anorexia and the like are generated by birds, and finally the aim of repelling birds is achieved.
At present, the commercial bird repellent mainly comprises water aqua and gel, which have the problems of low effective content, short lasting time, low spreading efficiency, poor stability of volatile concentration and the like, and the lasting time of the liquid bird repellent is not more than 2 days, and the lasting time of the gel-type solid bird repellent is not more than 2 weeks, so that airport players need to spray the bird repellent in a whole field every 2-3 days, and the cost is huge, but the effect is poor.
Disclosure of Invention
The invention aims to provide a water-soluble polymer coated slow-release bird repellent and a preparation method and application thereof, and solves the problems of short duration and unstable volatilization of active ingredients of the existing bird repellent.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a water-soluble polymer coated slow-release solid bird repellent, which comprises the following preparation raw materials in parts by weight:
10-30 parts of water-soluble polymer, 20-40 parts of bird repellent active ingredient, 10-20 parts of adsorbent, 3-10 parts of water-blocking agent, 10-20 parts of plant adhesive and 10-20 parts of water.
Preferably, the aqueous polymer comprises one or more of water-soluble phenolic resin, water-soluble epoxy resin, water-soluble acrylic resin, water-soluble polyurethane, water-soluble cellulose, water-soluble methylcellulose, polyvinyl alcohol and polyethylene glycol.
Preferably, the bird repellent active ingredient comprises one or more of methyl anthranilate, cinnamaldehyde, lemon essential oil, camphor, citronella essential oil, garlicin, and menthol.
Preferably, the adsorbent comprises one or more of activated carbon, fumed silica, bentonite, kaolin and attapulgite.
Preferably, the water blocking agent comprises one or more of hydrophobic silica, organic bentonite and organosilicon water repellent.
Preferably, the plant binder comprises one or more of cereal flour, plant mucilage, and plant protein flour.
Preferably, the plant sticky powder comprises one or more of corn starch, glutinous rice flour, agar powder, carrageenan and acacia; the plant protein powder comprises one or more of rice protein powder, soybean protein powder and pea protein powder.
The invention provides a preparation method of a water-soluble polymer-coated slow-release solid bird repellent, which comprises the following steps:
grinding and mixing the bird repellent active ingredients with the adsorbent to obtain bird repellent adsorption particles;
dissolving a water-soluble polymer in water to obtain a polymer solution;
spraying the polymer solution into the bird repellent adsorption particles in the continuous stirring process of the bird repellent adsorption particles to obtain polymer-coated bird repellent particles;
and mixing the plant adhesive, the water-blocking agent and the polymer-coated bird repellent particles, and then pressing to obtain the water-soluble polymer-coated slow-release solid bird repellent.
Preferably, the rotation speed of the continuous stirring is 80-150 r/min; the pressing pressure is 100-1000 Pa, and the pressing time is 5-20 min.
The invention provides the application of the water-soluble polymer-coated slow-release solid bird repellent agent in the bird repellent field, which is prepared by the water-soluble polymer-coated slow-release solid bird repellent agent or the preparation method in the technical scheme.
The invention provides a water-soluble polymer coated slow-release solid bird repellent, which comprises the following preparation raw materials in parts by weight: 10-30 parts of water-soluble polymer, 20-40 parts of bird repellent active ingredient, 10-20 parts of adsorbent, 3-10 parts of water-blocking agent, 10-20 parts of plant adhesive and 10-20 parts of water.
In the solid bird repellent provided by the invention, the water-soluble polymer material can be coated on the surface of the bird repellent active ingredient to form a film, the plant adhesive is easy to form a space network bonding structure after absorbing water, the polymer film coated on the surface layer of the active bird repellent ingredient is dried by absorbing water, so that the polymer is precipitated, active bird repellent particles are coated into a reversible microcapsule structure, the microcapsule is opened under the action of self degradation or rainwater under natural conditions, the bird repellent active ingredient in the microcapsule is released, and the purposes of long lasting time and uniform slow release are achieved. In addition, the solid bird repellent material provided by the invention can be dissolved in water, so that bird repellent components in the solid bird repellent material are exposed, and the solid bird repellent material is covered on the surfaces of bird repellent particles in a film state again along with volatilization of water, and the reversibility of the film state is realized through the water. Therefore, the invention utilizes the characteristics of dehydration and film formation of water-soluble polymer solution and water absorption of plant extraction adhesive to form a space network structure, and the bird repellent active ingredient adsorption particles are wrapped into microcapsules to be fixed into the solid bird repellent, thereby slowing down the volatilization rate of the bird repellent and achieving the purpose of lasting slow release.
The invention provides a preparation method of a water-soluble polymer coated slow-release solid bird repellent, which adopts the principle of drying and film forming by adopting a water-soluble polymer material, a layer of water-soluble polymer solution is sprayed on the surfaces of active ingredient adsorption particles of the bird repellent, after the water-soluble polymer solution is uniformly sprayed, a plant adhesive is added, the strong water absorbability of the plant adhesive is utilized to promote the polymer solution coated on the surfaces of the bird repellent particles to be dehydrated and formed into films, and the polymer is separated out and adhered on the surfaces of the bird repellent particles, so that the aim of coating the bird repellent is fulfilled, and three-dimensional network structures such as bonding filaments, grid films and the like can be formed after the plant adhesive absorbs water, so that each ingredient of the solid bird repellent is stably solidified, and a stable appearance with certain mechanical strength is formed.
Under natural conditions, the surface layer of the solid bird repellent (comprising a network structure formed by plant adhesives and a film formed by polymers) can slowly fall off due to self degradation (the degradation of organic plant adhesives and water-soluble polymers is slower, the volatilization of active ingredients of the bird repellent is mainly used in the initial stage) or rain wash, and new active ingredients of the bird repellent are continuously exposed, so that the purposes of long lasting time and uniform slow release (stable volatilization of active ingredients) are achieved.
According to the solid bird repellent, the water-blocking agent can prevent a large amount of external water from invading to dissolve water-soluble polymer components in gaps of the solid bird repellent, so that the contact area between the surface of the bird repellent and water is controlled, and a slow-release effect is realized. And the water blocking agent is dispersed among gaps of the microcapsules, so that the formation of the microcapsules is not affected. Therefore, the invention can realize adjustable slow release time by regulating and controlling the addition amount of the water blocking agent, ensures uniform release in the whole service period, does not have the problems of quick initial release and no volatilization in the later period, has better weather resistance, and can not cause the loss of active ingredients in a short time due to strong wind, strong rain and air.
Furthermore, the active bird repellent component and the plant adhesive used in the solid bird repellent are plant extracts, the water-soluble polymer is biodegradable, all materials are nontoxic, and finally all materials can be decomposed in the nature, so that the solid bird repellent is environment-friendly, safe and pollution-free.
Detailed Description
The invention provides a water-soluble polymer coated slow-release solid bird repellent, which comprises the following preparation raw materials in parts by weight:
10-30 parts of water-soluble polymer, 20-40 parts of bird repellent active ingredient, 10-20 parts of adsorbent, 3-10 parts of water-blocking agent, 10-20 parts of plant adhesive and 10-20 parts of water.
In the present invention, the preparation materials are commercially available as known to those skilled in the art unless otherwise specified.
The preparation raw materials of the water-soluble polymer coated slow-release solid bird repellent comprise, by mass, 10-30 parts of water-soluble polymer, preferably 12-22 parts, and more preferably 15-16 parts. In the present invention, the aqueous polymer preferably includes one or more of water-soluble phenol resin, water-soluble epoxy resin, water-soluble acrylic resin, water-soluble polyurethane, water-soluble cellulose, water-soluble methylcellulose, polyvinyl alcohol and polyethylene glycol. When the water-soluble polymers are more than two of the above, the proportion of the water-soluble polymers of different types is not particularly limited, and the water-soluble polymers can be adjusted according to actual requirements.
Based on the mass parts of the water-soluble polymer, the preparation raw materials of the water-soluble polymer coated slow-release solid bird repellent provided by the invention comprise 20-40 parts of bird repellent active ingredients, and more preferably 30-35 parts. In the present invention, the bird repellent active ingredient preferably includes one or more of methyl anthranilate, cinnamaldehyde, lemon essential oil, camphor, citronella essential oil, garlicin, and menthol. When the number of the bird repellent active ingredients is two or more, the proportion of the bird repellent active ingredients of different types is not particularly limited, and the bird repellent active ingredients can be adjusted according to actual requirements.
Based on the mass parts of the water-soluble polymer, the preparation raw materials of the water-soluble polymer coated slow-release solid bird repellent provided by the invention comprise 10-20 parts of adsorbent, and more preferably 13-18 parts. In the present invention, the adsorbent preferably includes one or more of activated carbon, fumed silica, bentonite, kaolin, and attapulgite. When the number of the adsorbents is two or more, the proportion of the adsorbents of different types is not particularly limited, and the adsorbents can be adjusted according to actual requirements. The invention utilizes the adsorbent to adsorb the active components of the bird repellent to form the adsorption particles of the bird repellent.
Based on the mass parts of the water-soluble polymer, the preparation raw materials of the water-soluble polymer coated slow-release solid bird repellent provided by the invention comprise 3-10 parts of water-blocking agent, more preferably 5-8 parts, and even more preferably 6-7 parts. In the present invention, the water blocking agent preferably includes one or more of hydrophobic silica, organobentonite and organosilicon water repellent; the organosilicon water repellent is preferably Dow Corning SHP50, SHP60 or KY-1. When the water-blocking agent is more than two of the above, the proportion of the water-blocking agents of different types is not particularly limited, and the water-blocking agents can be adjusted according to actual requirements. According to the invention, the water-blocking agent can prevent a large amount of water from invading to dissolve water-soluble components in the gaps of the solid bird repellent, so that the contact area between the surface of the bird repellent and water is controlled, and a slow release effect is realized.
Based on the mass parts of the water-soluble polymer, the preparation raw materials of the water-soluble polymer coated slow-release solid bird repellent provided by the invention comprise 10-20 parts of plant adhesive, and more preferably 12-15 parts. In the present invention, the plant binder preferably includes one or more of gluten meal, plant mucilage meal, and plant protein meal; the plant sticky powder preferably comprises one or more of corn starch, glutinous rice flour, agar powder, carrageenan and acacia; the vegetable protein powder preferably comprises one or more of rice protein powder, soybean protein powder and pea protein powder. When the plant adhesive is more than two of the above, the proportion of the plant adhesive of different types is not particularly limited, and the plant adhesive can be adjusted according to actual requirements. The plant adhesive used in the invention is plant extract component, and can form macromolecular adhesive when meeting water, and the adhesive can expand when absorbing water, so that the adhesive can be adhered together to form a space network structure with certain strength.
Based on the mass parts of the water-soluble polymer, the preparation raw materials of the water-soluble polymer coated slow-release solid bird repellent provided by the invention comprise 10-20 parts of water, and more preferably 15-18 parts of water.
The invention provides a preparation method of a water-soluble polymer-coated slow-release solid bird repellent, which comprises the following steps:
grinding and mixing the bird repellent active ingredients with the adsorbent to obtain bird repellent adsorption particles;
dissolving a water-soluble polymer in water to obtain a polymer solution;
spraying the polymer solution into the bird repellent adsorption particles in the continuous stirring process of the bird repellent adsorption particles to obtain polymer-coated bird repellent particles;
and mixing the plant adhesive, the water-blocking agent and the polymer-coated bird repellent particles, and then pressing to obtain the water-soluble polymer-coated slow-release solid bird repellent.
According to the invention, the bird repellent active ingredients and the adsorbent are ground and mixed to obtain bird repellent adsorption particles.
The grinding and mixing process is not particularly limited, and the materials are uniformly mixed according to the process well known in the art; after the grinding and mixing, the obtained material is preferably screened by an 80-mesh screen to obtain bird repellent adsorption particles.
The invention dissolves water-soluble polymer in water to obtain polymer solution.
In the present invention, the dissolution is preferably performed under stirring conditions, and the stirring speed is preferably 50 to 200r/min, more preferably 80 to 120r/min, and still more preferably 100r/min; the stirring is preferably carried out until complete dissolution.
In the continuous stirring process of the bird repellent adsorption particles, the polymer solution is sprayed into the bird repellent adsorption particles to obtain polymer-coated bird repellent particles.
In the present invention, the rotation speed of the continuous stirring is preferably 80 to 150r/min, more preferably 100 to 130r/min; the invention preferably adopts a sprayer to spray the polymer solution into the bird repellent adsorption particles, and continuously stirring until the water-soluble polymer is uniformly coated on the surfaces of the bird repellent particles. The spraying amount and the spraying time of the spraying are not particularly limited, and the polymer solution with the required amount can be sprayed according to the using operation of a well-known sprayer.
After the spraying, the invention preferably does not need to be dried, and water on the surfaces of the polymer-coated bird repellent particles can be sucked away by the plant adhesive in the subsequent mixing process with the plant adhesive, so that the film-forming coated bird repellent particles are formed.
After the polymer-coated bird repellent particles are obtained, the plant adhesive, the water blocking agent and the polymer-coated bird repellent particles are mixed and pressed to obtain the water-soluble polymer-coated slow-release solid bird repellent.
The invention preferably uniformly disperses the plant adhesive and the water-blocking agent into the polymer-coated bird repellent particles, uniformly mixes the polymer-coated bird repellent particles in one direction, then pours the polymer-coated bird repellent particles into a die for pressing, forms a space network structure after absorbing water by the plant adhesive, and simultaneously cures all the components into the slow-release solid bird repellent with certain mechanical strength.
In the present invention, the pressing pressure is preferably 100 to 1000Pa, more preferably 200 to 700Pa, still more preferably 300 to 500Pa; the time is preferably 5 to 20 minutes, more preferably 10 to 15 minutes. The present invention is not particularly limited to the above-mentioned pressing, and the pressing process capable of achieving the above-mentioned pressure range may be carried out.
The invention provides the application of the water-soluble polymer-coated slow-release solid bird repellent agent in the bird repellent field, which is prepared by the water-soluble polymer-coated slow-release solid bird repellent agent or the preparation method in the technical scheme. The method for applying the solid bird repellent is not particularly limited, and the solid bird repellent is directly placed at a position with a higher topography of a required bird repellent area, so that the solid bird repellent is prevented from being disintegrated after being soaked in water for a long time.
The technical solutions of the present invention will be clearly and completely described in the following in connection with the embodiments of the present invention. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the following examples, water-soluble epoxy resins were purchased from: phoenix-brand water-based epoxy resin of Nantong star chemical company;
example 1
Weighing 23 parts of methyl anthranilate, 5 parts of cinnamaldehyde, 2 parts of allicin and 5 parts of camphor, uniformly mixing, adding 13 parts of fumed silica, uniformly grinding, and sieving with a 80-mesh sieve to obtain bird repellent adsorption particles;
weighing 16 parts of water-soluble epoxy resin, dissolving in 18 parts of water, and stirring at a slow speed of 100r/min until the water-soluble epoxy resin is completely dissolved to obtain a polymer solution;
spraying the macromolecule epoxy resin solution into the bird repellent adsorption particles in the slow stirring process of 150r/min by using a sprayer, and continuously stirring until water-soluble macromolecules are uniformly coated on the surfaces of the bird repellent particles to obtain macromolecule coated bird repellent particles;
weighing 12 parts of vegetable adhesive cereal flour and 6 parts of organic bentonite, uniformly dispersing into polymer-coated bird repellent particles, uniformly mixing in one direction, pouring into a mold, and loading 200Pa pressure for 10min to obtain the slow-release solid bird repellent.
Example 2
Weighing 20 parts of methyl anthranilate, 2 parts of lemon essential oil, 3 parts of menthol, 2 parts of citronella essential oil and 3 parts of cinnamaldehyde, uniformly mixing, adding 20 parts of activated carbon, uniformly grinding, and sieving with a 80-mesh sieve to obtain bird repellent adsorption particles;
weighing 12 parts of water-soluble polyvinyl alcohol, dissolving in 15 parts of water, and stirring at a slow speed of 120r/min until the polyvinyl alcohol is completely dissolved to obtain a polymer solution;
spraying the polymer solution into the bird repellent adsorption particles in the slow stirring process of 100r/min by using a sprayer, and continuously stirring until the water-soluble polymer is uniformly coated on the surfaces of the bird repellent particles to obtain polymer-coated bird repellent particles;
15 parts of plant sticky powder (8 parts of glutinous rice flour, 3 parts of agar powder, 2 parts of Arabic gum, 1 part of carrageenan and 1 part of corn starch) and 8 parts of hydrophobic silica are weighed and uniformly dispersed into polymer-coated bird repellent particles, and after being uniformly mixed in a single direction, the mixture is poured into a mold and loaded with 500Pa of pressure for 15 minutes, so that the slow-release solid bird repellent is obtained.
Example 3
Weighing 15 parts of methyl anthranilate, 3 parts of menthol, 2 parts of allicin, 3 parts of cinnamaldehyde and 2 parts of camphor, uniformly mixing, adding 18 parts of attapulgite, uniformly grinding, and sieving with a 80-mesh sieve to obtain bird repellent adsorption particles;
weighing 22 parts of water-soluble acrylic resin, dissolving in 20 parts of water, and stirring at a slow speed of 80r/min until the water-soluble acrylic resin is completely dissolved to obtain a polymer solution;
spraying the polymer solution into the bird repellent adsorption particles in the slow stirring process of 130r/min by using a sprayer, and continuously stirring until water-soluble polymers are uniformly coated on the surfaces of the bird repellent particles to obtain polymer-coated bird repellent particles;
weighing 10 parts of vegetable protein powder (4 parts of pea protein powder, 3 parts of rice protein powder and 3 parts of soybean protein powder protein), uniformly dispersing 5 parts of organic silicon water repellent SHP50 into the polymer-coated bird repellent particles, uniformly mixing in a single direction, pouring into a mold, and loading 700Pa pressure for 10 minutes to obtain the slow-release solid bird repellent.
Performance testing
Analysis of sustained release time: the slow-release solid bird repellent products prepared in examples 1 to 3 were placed outdoors, weighed (unit: g) every 5 days at 10 am, and analyzed for slow-release period, and the results are shown in Table 1.
TABLE 1 weight loss (g) of the slow-released solid bird repellents of examples 1-3 at different times
As is clear from the volatilization time in Table 1, the slow release periods of the slow release type solid bird repellent products in examples 1 to 3 were all 3 months or more, the release rates were uniform, and the average volatilization rate in five days was mostly controlled to be about.+ -. 1g of the average value.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (10)
1. The water-soluble polymer coated slow-release solid bird repellent is characterized by comprising the following preparation raw materials in parts by weight:
10-30 parts of water-soluble polymer, 20-40 parts of bird repellent active ingredient, 10-20 parts of adsorbent, 3-10 parts of water-blocking agent, 10-20 parts of plant adhesive and 10-20 parts of water.
2. The water-soluble polymer-coated slow-release solid bird repellent according to claim 1, wherein the aqueous polymer comprises one or more of water-soluble phenolic resin, water-soluble epoxy resin, water-soluble acrylic resin, water-soluble polyurethane, water-soluble cellulose, water-soluble methylcellulose, polyvinyl alcohol, and polyethylene glycol.
3. The water-soluble polymer-coated slow-release solid bird repellent according to claim 1, wherein the bird repellent active ingredient comprises one or more of methyl anthranilate, cinnamaldehyde, lemon essential oil, camphor, citronella essential oil, garlicin, and menthol.
4. The water-soluble polymer-coated slow-release solid bird repellent according to claim 1, wherein the adsorbent comprises one or more of activated carbon, fumed silica, bentonite, kaolin, and attapulgite.
5. The water-soluble polymer-coated slow-release solid bird repellent according to claim 1, wherein the water-blocking agent comprises one or more of hydrophobic silica, organobentonite, and organosilicon water repellent.
6. The water-soluble polymer-coated slow-release solid bird repellent according to claim 1, wherein the plant binder comprises one or more of gluten meal, plant mucilage, and plant protein meal.
7. The water-soluble polymer-coated slow-release solid bird repellent according to claim 6, wherein the plant sticky powder comprises one or more of corn starch, glutinous rice flour, agar powder, carrageenan and acacia; the plant protein powder comprises one or more of rice protein powder, soybean protein powder and pea protein powder.
8. The method for preparing the water-soluble polymer-coated slow-release solid bird repellent according to any one of claims 1 to 7, comprising the following steps:
grinding and mixing the bird repellent active ingredients with the adsorbent to obtain bird repellent adsorption particles;
dissolving a water-soluble polymer in water to obtain a polymer solution;
spraying the polymer solution into the bird repellent adsorption particles in the continuous stirring process of the bird repellent adsorption particles to obtain polymer-coated bird repellent particles;
and mixing the plant adhesive, the water-blocking agent and the polymer-coated bird repellent particles, and then pressing to obtain the water-soluble polymer-coated slow-release solid bird repellent.
9. The method according to claim 8, wherein the rotation speed of the continuous stirring is 80-150 r/min; the pressing pressure is 100-1000 Pa, and the pressing time is 5-20 min.
10. The use of the water-soluble polymer-coated slow-release solid bird repellent according to any one of claims 1 to 7 or the water-soluble polymer-coated slow-release solid bird repellent prepared by the preparation method according to any one of claims 8 to 9 in the field of bird repelling.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117063655A (en) * | 2023-08-15 | 2023-11-17 | 湖南省土壤肥料研究所 | Method for preventing and controlling rice field submerged cultivation and cooperatively reducing cadmium in water flooding environment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117063655A (en) * | 2023-08-15 | 2023-11-17 | 湖南省土壤肥料研究所 | Method for preventing and controlling rice field submerged cultivation and cooperatively reducing cadmium in water flooding environment |
| CN117063655B (en) * | 2023-08-15 | 2024-04-23 | 湖南省土壤肥料研究所 | Method for preventing and controlling rice field submerged cultivation and cooperatively reducing cadmium in water flooding environment |
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