Photochromic bird repelling gel material as well as preparation method and application thereof

Abstract

The invention discloses a photochromic bird repelling gel material which comprises the following raw materials in parts by weight: 6-20 parts of bird repelling active ingredients; 5.5 to 13 parts by weight of a polymer gel; 6-15 parts by weight of a photochromic filler dispersion liquid; 20-30 parts by weight of a solvent; the bird repelling active components comprise 1-5 parts by weight of methyl anthranilate, 2-5 parts by weight of cinnamyl aldehyde, 2-5 parts by weight of peppermint oil and 1-5 parts by weight of capsaicin; the polymer gel component comprises the following components in parts by weight: 5-10 parts of a monomer, 0-1.5 parts of a cross-linking agent and 0.5-1.5 parts of an initiator; the photochromic filler dispersion liquid comprises 1-5 parts by weight of a photochromic filler and 5-10 parts by weight of a dispersion liquid solvent. The invention further discloses a preparation method of the photochromic bird repelling gel material. The photochromic bird-repelling gel material provided by the invention can effectively repel most birds through the synergistic effect of vision and smell, the polymer gel can slowly release bird-repelling active ingredients, and the volatilization time is long.

Description

Technical Field

[0001] The present invention relates to the field of functional polymer materials, and particularly to a photochromic bird repellent gel material, a preparation method thereof and an application thereof. Background Art

[0002] Birds play an important role in the natural environment and have an irreplaceable role in maintaining ecological balance. However, in the fields of agricultural production, power facilities, airports, etc., there are many problems and conflicts between birds and humans. For example, in farmland, orchards and other areas, birds often steal crops, bringing huge economic losses to farmers; in the power grid field, birds often build nests on equipment such as electric poles and power suppliers, which are extremely likely to cause faults such as short circuits in the lines, leading to large-scale power outages; in the airport and its surrounding areas, the appearance of birds poses a huge threat to aviation safety. When a bird collides with a high-speed flying aircraft, the impact force generated is sufficient to affect the normal operation of the aircraft, and in severe cases, it will cause an air crash.

[0003] At present, in order to solve the above existing problems, the commonly used bird repellent methods can be divided into three categories. The first category is to use physical devices such as bird nets and spiked bird repellent devices; the second category is to use sound waves and laser bird repellent devices; the third category is to spray and put drugs containing bird repellent active ingredients. Among them, low-toxic bird repellent products mainly in the form of granules, powders, aqueous solutions and emulsions are highly favored. For example, Chinese Patent (Application No.: 201711182000.8) discloses an airport and power special bird repellent composition containing propofol. By mass, it includes the following preparation raw materials: 7-12 parts of borneol, 35-50 parts of organic solvent, 3-6 parts of cinnamamide, 2-5 parts of propofol, 0.5-1 part of antioxidant, 0.5-1 part of antifreeze, and 1-2 parts of 2,6-diisopropylphenol. The emulsion-type bird repellent provided by this invention is not easy to layer, is pollution-free to the environment, and does not harm birds; another example is Chinese Patent (Application No.: 201710821187.5) which discloses a method for a resin-based bird repellent composite material. Its resin formulation components include polymerization monomers, cross-linking agents, emulsifiers, and water. The bird repellent active ingredients include one or more combinations of methyl anthranilate, cinnamyl alcohol, camphor oil, novalgin, borneol, and benzethonium chloride. The bird repellent active ingredients of this invention can be adsorbed in the resin, and the effective period is relatively long after being put, and the bird repellent effect is good. However, these bird repellent products have problems such as poor weather resistance, insufficient visual bird repellent effect and environmental pollution in actual use. Therefore, it is of great significance to develop an environment-friendly material with both visual and olfactory bird repellent functions. Summary of the Invention

[0004] The purpose of the present invention is to disclose a photochromic bird repellent gel material and its preparation method. By dispersing photochromic fillers in a polymer gel containing bird repellent active ingredients, it can effectively drive away most birds through the synergistic action of both vision and smell. At the same time, the polymer gel can slowly release the bird repellent active ingredients with a long volatilization time, solving the problems of poor weather resistance, insufficient visual bird repellent effect, and environmental pollution in existing bird repellent technologies.

[0005] The technical solution adopted by the present invention to achieve the above-mentioned invention purpose is as follows:

[0006] A photochromic bird repellent gel material, in terms of parts by weight, the raw materials of the photochromic bird repellent gel material include the following components:

[0007] 6 - 20 parts by weight of bird repellent active ingredients;

[0008] 5.5 - 13 parts by weight of polymer gel;

[0009] 6 - 15 parts by weight of photochromic filler dispersion;

[0010] 20 - 30 parts by weight of solvent;

[0011] The bird repellent active ingredients include 1 - 5 parts by weight of methyl anthranilate, 2 - 5 parts by weight of cinnamaldehyde, 2 - 5 parts by weight of peppermint oil, and 1 - 5 parts by weight of capsaicin;

[0012] The photochromic filler dispersion includes 1 - 5 parts by weight of photochromic compound and 10 - 20 parts by weight of dispersion solvent;

[0013] The photochromic filler is a spirooxazine - type photochromic compound, and the structural formula is:

[0014]

[0015] In the formula: R 1 =CH 3 , C 6 H 6 , CH 2 CH 2 OH or (CH 2 ) 5 CH 3 ; R 2 =NO 2 , H or OCH 3 ; R 3 =H, OCH 3 or NO 2 .

[0016] In the photochromic bird-repellent gel material provided by the present invention, the polymer gel drives away birds by releasing bird-repellent active ingredients and photochromism. When birds inhale the volatile substances of the bird-repellent ingredients, their vision is stimulated, resulting in an allergic anorexia reaction and forming a regional avoidance reflex memory, which can effectively drive away most birds.

[0017] Among them, spirooxazine photochromic compounds are colorless or light yellow under visible light, and turn orange-red after irradiation with ultraviolet light. When the ultraviolet light disappears, the color returns to the original color. The photochromic reaction is as follows:

[0018]

[0019] Preferably, the polymer gel component includes 5-10 parts by weight of monomer, 0-1.5 parts by weight of cross-linking agent and 0.5-1.5 parts by weight of initiator;

[0020] The dispersion solvent may be selected from water or an organic solvent.

[0021] The solvent may be selected from water or an organic solvent;

[0022] Preferably, the solvent may be selected from deionized water, N,N'-dimethylformamide, dimethyl sulfoxide, toluene, chloroform, and ethyl acetate.

[0023] The polymer gel matrix is ​​a chemically synthesized gel or a natural polymer gel; the chemically synthesized gel is selected from one or more of polyvinyl alcohol gel, polyacrylamide gel, polyacrylic acid gel, polyisopropylacrylamide gel, polyacrylic acid-itaconic acid copolymer gel or acrylic acid-maleic acid copolymer gel; the natural polymer gel includes one or more of hyaluronic acid gel, alginate gel, chitosan gel or gelatin gel.

[0024] Preferably, in the above-mentioned photochromic bird-repellent gel material, the polymer gel includes chemically synthesized gel and natural polymer gel; the raw material of the chemically synthesized gel is selected from one or more of polyvinyl alcohol, acrylamide, acrylic acid, isopropyl acrylamide, itaconic acid, maleic acid, and 2-hydroxyethyl acrylate; the natural polymer gel is selected from one or more of hyaluronic acid, alginate, chitosan or gelatin, and the structural formula is:

[0025]

[0026] Preferably, in the above-mentioned photochromic bird-repellent gel material, the crosslinking agent is one or more of N,N'-methylenebisacrylamide, ethylene glycol diacrylate, trimethylolpropane triacrylate, and glutaraldehyde, and the structural formula is:

[0027]

[0028] Preferably, the initiator includes one or more of azobisisobutyronitrile, benzoyl peroxide, N,N'-dimethylaniline tetramethylethylenediamine, ammonium persulfate, and potassium persulfate.

[0029] The main mechanism of the present invention is as follows: A polymer gel material with a complete three-dimensional network structure is obtained through free radical polymerization initiated by azo initiators or peroxide initiators. After adding bird repellent active ingredients such as methyl anthranilate to the gel material, methyl anthranilate can act as a hydrogen bond donor or acceptor, and have a hydrogen bond interaction with the polymer gel network, slowing down its own release rate. The polymer gel carries the bird repellent active ingredient and drives away birds through smell; in addition, a photochromic filler is dispersed in the gel material containing the bird repellent active ingredient, which can present orange-red after being irradiated by ultraviolet light, simulating the effect of a flame. Thus, it can change color under ultraviolet light to stimulate the vision of birds, and can also stably release the bird repellent smell. It can effectively interfere with and drive away most birds through the synergistic effect of vision and smell, achieving a multi-dimensional bird repellent effect. This material has stable performance and remarkable bird repellent effect, and can be widely used in fields such as agricultural production, power facilities, and airports, providing an efficient and sustainable solution to the problem of bird damage.

[0030] Taking acrylic polymer gel as an example, where acrylic acid is the monomer, N,N'-methylenebisacrylamide is the cross-linking agent, tetramethylethylenediamine is the initiator, ammonium persulfate is the initiator assistant, and deionized water is the solvent. The mechanism of the hydrogen bond interaction between the polymer gel and the bird repellent active ingredient of methyl anthranilate is explained by the following reaction formula:

[0031]

[0032] (The initiator tetramethylethylenediamine and the initiator assistant ammonium persulfate are omitted in the reaction formula).

[0033] Preferably, in the above photochromic bird repellent gel material, the photochromic filler is a spirooxazine-based photochromic compound with a particle size of 10 - 100 nanometers, and the photochromic filler is evenly distributed in the gel matrix through ball milling dispersion.

[0034] Preferably, the solvent can be selected from deionized water, N,N'-dimethylformamide, dimethyl sulfoxide, toluene, chloroform, and ethyl acetate.

[0035] Correspondingly, the present invention discloses a preparation method of a photochromic bird repellent gel material, including the following steps:

[0036] (1) Prepare a gel precursor solution containing bird-repellent active ingredients: First, uniformly mix 5 - 10 parts of monomers, 0 - 1.5 parts of cross-linking agents, 0.5 - 1.5 parts of initiators, and 20 - 30 parts of solvents to obtain a gel precursor solution. Then, add 1 - 5 parts of methyl anthranilate, 2 - 5 parts of cinnamaldehyde, 2 - 5 parts of peppermint oil, and 1 - 5 parts of capsaicin as bird-repellent active ingredients to the gel precursor solution to obtain a gel precursor solution containing bird-repellent active ingredients; (2) Prepare a photochromic filler dispersion: Disperse 1 - 5 parts of a spirooxazine-based photochromic compound in 10 - 20 parts of a dispersion solvent through high-pressure homogenization or ball milling to prepare a 10 - 100 nanometer-level dispersion; the photochromic filler is a spirooxazine-based photochromic compound, and the structural formula is:

[0037]

[0038] In the formula: R 1 = CH 3 、C 6 H 6 、CH 2 CH 2 OH or (CH 2 ) 5 CH 3 ; R 2 = NO 2 、H or OCH 3 ; R 3 = H、OCH 3 or NO 2 ;

[0039] (3) Composite molding: Add 6 - 15 parts of the photochromic filler dispersion to the gel precursor solution containing bird-repellent active ingredients. After stirring evenly, the precursor solution is gelated to obtain a photochromic bird-repellent gel material.

[0040] Preferably, in step (2), the addition order of the bird-repellent active ingredients is to first add the liquid components: methyl anthranilate, cinnamaldehyde, peppermint oil, and then add the solid component: capsaicin.

[0041] Preferably, in step (3), the stirring rate is 300 - 500 revolutions per minute, and the temperature is controlled at 20 - 70 °C for gelation for 12 - 24 hours.

[0042] In the present invention, the preparation process of the photochromic bird-repellent gel material includes: sequentially weighing, mixing, high-pressure homogenizing, ball milling, and casting molding of the raw material components.

[0043] The present invention also provides an application of the above-mentioned photochromic bird-repellent gel material in the fields of agricultural production, power facilities, or airports.

[0044] Compared with the existing technologies, the photochromic bird-repellent gel material prepared by the present invention has the following beneficial effects:

[0045] 1. The raw materials adopted by the present invention are widely sourced and low in cost.

[0046] 2. The polymer gel material has a three-dimensional network structure. While swelling a large amount of solvent, it will not dissolve, and has good drug loading and release capabilities and biocompatibility.

[0047] 3. The bird-repellent active ingredient of the present invention is composed of four components, namely methyl anthranilate, cinnamaldehyde, peppermint oil, and capsaicin, which can produce a special smell to drive away most birds. And after birds form a memory stress response, they will have an avoidance behavior towards similar smells, effectively driving away most birds.

[0048] 4. The present invention introduces the methyl anthranilate-based bird-repellent active ingredient into the polymer gel. Methyl anthranilate can act as a hydrogen bond donor or acceptor, forming a hydrogen bond with the gel network, and can slowly release a special smell with a long duration.

[0049] 5. The present invention disperses the photochromic filler in the polymer gel containing the bird-repellent component, and can drive away birds through the synergistic effect of releasing the bird-repellent active ingredient and photochromism. The bird-repellent effect is remarkable, and it can be widely applied to fields such as agricultural production, power facilities, and airports. Specific Embodiments

[0050] The following further elaborates on the present invention in combination with embodiments. It should be noted that the following embodiments are intended to facilitate the understanding of the present invention.

[0051] Example 1

[0052] In Example 1, the sources of the raw materials of the polymer gel are shown in Table 1, and the sources of the raw materials of the bird-repellent active ingredient and the photochromic filler are shown in Table 2.

[0053] Table 1 Raw Materials of the Polymer Gel in Example 1

[0054] Raw materials Supplier company Acrylic acid Aladdin Industrial Corporation N,N’-Methylenebisacrylamide Macklin Biochemical Co., Ltd. Benzoyl peroxide Sinopharm Group N,N’-Dimethylaniline Sinopharm Group N,N’-Dimethylformamide Meryer Chemical Technology

[0055] Preparation of the Polymer Gel Precursor Solution:

[0056] Step 1: Weigh 5 g of acrylic acid and dissolve it in 20 ml of N,N'-dimethylformamide;

[0057] Step 2: Add 1 g of N,N'-methylenebisacrylamide to the solution in Step 1, and use a magnetic stirrer to stir at a speed of 400 revolutions per minute for 20 minutes to obtain a clear mixed solution;

[0058] Step 3: Add 1 g of benzoyl peroxide and 20 μL of N,N'-dimethylaniline to the solution in Step 2, stir at 300 revolutions per minute for 10 minutes using a magnetic stirrer at 50 °C, and after the reaction solution returns to room temperature, obtain a polymer gel precursor solution.

[0059] Table 2 Raw materials of bird repellent active ingredients and photochromic fillers in Example 1

[0060] Raw materials Supplier company Methyl anthranilate Sinopharm Group Cinnamaldehyde Sinopharm Group Peppermint oil Macklin Biochemical Co., Ltd. Capsaicin Sinopharm Group Spiroxazine photochromic compound Shanghai Jingyan Co., Ltd.

[0061] Preparation of photochromic bird repellent gel material:

[0062] Step 1: Add 3 g of methyl anthranilate, 2 g of cinnamaldehyde, 2 g of peppermint oil, and 3 g of capsaicin to the polymer gel precursor solution in sequence, and mix for 20 minutes at 350 revolutions per minute using a stirring mixer to obtain a polymer gel precursor solution containing bird repellent active ingredients;

[0063] Step 2: Disperse 5 g of spirooxazine photochromic compound in 10 ml of N,N'-dimethylformamide, and homogenize for 10 minutes using a high-pressure homogenizer with a pressure value of 50% of the rated pressure to obtain a 100-nanometer spirooxazine photochromic dispersion;

[0064] Step 3: Slowly add 8 g of the spirooxazine dispersion to the polymer gel precursor solution containing bird repellent active ingredients, mix at 400 revolutions per minute for 30 minutes using a stirring mixer, quickly transfer to a silicone rubber mold after stirring evenly, and react at 30 °C for 20 hours to completely crosslink, obtaining a photochromic bird repellent gel material.

[0065] Example 2

[0066] The raw material sources of the polymer gel in Example 2 are shown in Table 3, and the raw material sources of the bird repellent active ingredients and photochromic fillers are shown in Table 4.

[0067] Table 3 Raw materials of the polymer gel in Example 2

[0068] Raw materials Supplier company Acrylic acid Aladdin Industrial Corporation Acrylamide Aladdin Industrial Corporation N,N’-Methylenebisacrylamide Macklin Biochemical Co., Ltd. N,N,N’,N’-Tetramethylethylenediamine Sinopharm Group Ammonium persulfate Sinopharm Group Deionized water Wahaha Group

[0069] Preparation of polymer gel precursor solution:

[0070] Step 1: Weigh 2.5 g of acrylic acid and 2.5 g of acrylamide and dissolve them in 25 ml of deionized water;

[0071] Step 2: Add 1 g of N,N'-methylenebisacrylamide to the solution in Step 1, and stir at 300 revolutions per minute for 10 minutes using a magnetic stirrer to obtain a clear liquid;

[0072] Step 3: Add 500 μL of 4% ammonium persulfate aqueous solution and 50 μL of N,N,N’,N’-tetramethylethylenediamine to the solution in Step 2, and stir with a magnetic stirrer at a speed of 300 revolutions per minute for 10 minutes to obtain a polymer gel precursor solution.

[0073] Table 4 Raw materials of bird repellent active ingredients and photochromic fillers in Example 2

[0074] Raw materials Supplier company Methyl anthranilate Sinopharm Group Cinnamaldehyde Sinopharm Group Peppermint oil Macklin Biochemical Co., Ltd. Capsaicin Sinopharm Group Spiroxazine photochromic compound Shanghai Jingyan Co., Ltd.

[0075] Preparation of photochromic bird repellent gel material:

[0076] Step 1: Add 3 g of methyl anthranilate, 2 g of cinnamaldehyde, 2 g of peppermint oil, and 3 g of capsaicin to the polymer gel precursor solution in sequence, and mix with a stirring mixer at 350 revolutions per minute for 20 minutes to obtain a polymer gel precursor solution containing bird repellent active ingredients;

[0077] Step 2: Disperse 5 g of spiropyran photochromic compound in 10 ml of N,N’-dimethylformamide, and homogenize with a high-pressure homogenizer with a pressure value of 50% of the rated pressure for 10 minutes to obtain a 100-nanometer spiropyran photochromic dispersion;

[0078] Step 3: Slowly add 3 g of spiropyran dispersion to the polymer gel precursor solution containing bird repellent active ingredients, mix with a stirring mixer at 400 revolutions per minute for 30 minutes, quickly transfer to a silicone rubber mold after stirring evenly, and react at 30 °C for 24 hours to make it fully cross-linked to obtain a photochromic bird repellent gel material.

[0079] Example 3

[0080] The raw material sources of the polymer gel in Example 3 are shown in Table 5, and the raw material sources of the bird repellent active ingredients and photochromic fillers are shown in Table 6.

[0081] Table 5 Raw materials of the polymer gel in Example 3

[0082] Raw materials Supplier company N,N’-Dimethylacrylamide Aladdin Industrial Corporation Itaconic acid Macklin Biochemical Co., Ltd. Benzoyl peroxide Sinopharm Group N,N’-Dimethylaniline Sinopharm Group N,N’-Dimethylformamide Meryer Chemical Technology

[0083] Preparation of polymer gel precursor solution:

[0084] Step 1: Weigh 3 g of N,N’-dimethylacrylamide and 3 g of itaconic acid amide, dissolve them in 20 ml of N,N’-dimethylformamide, and stir with a magnetic stirrer at a speed of 400 revolutions per minute for 20 minutes to obtain a clear liquid;

[0085] Step 2: Add 1 g of benzoyl peroxide and 20 μL of N,N'-dimethylaniline to the solution in Step 2, stir with a magnetic stirrer at 50 °C for 10 minutes at a speed of 300 revolutions per minute. After the reaction solution returns to room temperature, a polymer gel precursor solution is obtained.

[0086] Table 6 Raw materials of bird repellent active ingredients and photochromic fillers in Example 3

[0087]

[0088]

[0089] Preparation of photochromic bird repellent gel material:

[0090] Step 1: Add 2 g of methyl anthranilate, 4 g of cinnamaldehyde, 2 g of peppermint oil, and 1 g of capsaicin to the polymer gel precursor solution in sequence, and mix with a stirring mixer at 350 revolutions per minute for 20 minutes to obtain a polymer gel precursor solution containing bird repellent active ingredients;

[0091] Step 2: Disperse 5 g of spirooxazine photochromic compound in 10 ml of N,N'-dimethylformamide, and homogenize with a high-pressure homogenizer with a pressure value of 50% of the rated pressure for 10 minutes to obtain a 100-nanometer spirooxazine photochromic dispersion;

[0092] Step 3: Slowly add 8 g of spirooxazine dispersion to the polymer gel precursor solution containing bird repellent active ingredients, mix with a stirring mixer at 400 revolutions per minute for 30 minutes, quickly transfer to a silicone rubber mold after stirring evenly, and react at 70 °C for 24 hours to complete cross-linking, obtaining a photochromic bird repellent gel material.

[0093] Example 4

[0094] The raw material sources of the polymer gel in Example 4 are shown in Table 7, and the raw material sources of the bird repellent active ingredients and photochromic fillers are shown in Table 8.

[0095] Table 7 Raw materials of the polymer gel in Example 4

[0096] Raw materials Supplier company Acrylic acid Aladdin Industrial Corporation Maleic acid Macklin Biochemical Co., Ltd. Benzoyl peroxide Sinopharm Group N,N’-Dimethylaniline Sinopharm Group N,N’-Dimethylformamide Meryer Chemical Technology

[0097] Preparation of polymer gel precursor solution:

[0098] Step 1: Weigh 3 g of acrylic acid and 3 g of maleic acid and dissolve them in 20 ml of N,N'-dimethylformamide, stir with a magnetic stirrer at a speed of 400 revolutions per minute for 20 minutes to obtain a clear liquid;

[0099] Step 2: Add 1 g of benzoyl peroxide and 20 μL of N,N'-dimethylaniline to the solution in Step 2, and stir at 300 revolutions per minute for 10 minutes using a magnetic stirrer at 50 °C. After the reaction solution returns to room temperature, a polymer gel precursor solution is obtained.

[0100] Table 8 Raw materials of bird repellent active ingredients and photochromic fillers in Example 4

[0101]

[0102]

[0103] Preparation of photochromic bird repellent gel material:

[0104] Step 1: Add 2 g of methyl anthranilate, 4 g of cinnamaldehyde, 2 g of peppermint oil, and 1 g of capsaicin to the polymer gel precursor solution in sequence, and mix at 350 revolutions per minute for 20 minutes using a stirring mixer to obtain a polymer gel precursor solution containing bird repellent active ingredients;

[0105] Step 2: Disperse 5 g of spiropyran photochromic compound in 10 ml of N,N'-dimethylformamide, and homogenize for 10 minutes using a high-pressure homogenizer with a pressure value of 50% of the rated pressure to obtain a 100-nanometer spiropyran photochromic dispersion;

[0106] Step 3: Slowly add 8 g of the spiropyran dispersion to the polymer gel precursor solution containing bird repellent active ingredients, mix at 400 revolutions per minute for 30 minutes using a stirring mixer, quickly transfer it to a silicone rubber mold after stirring evenly, and react at 70 °C for 24 hours to make it completely cross-linked, obtaining a photochromic bird repellent gel material.

[0107] Comparative Example 1

[0108] The sources of the particulate matrix and bird repellent active ingredient raw materials prepared in Comparative Example 1 are shown in Table 9.

[0109] Table 9 Particulate matrix and bird repellent active ingredient raw materials in Comparative Example 1

[0110] Raw materials Supplier company Activated carbon Macklin Biochemical Co., Ltd. Zeolite Aladdin Industrial Corporation Methyl anthranilate Sinopharm Group Cinnamaldehyde Sinopharm Group Peppermint oil Macklin Biochemical Co., Ltd. Capsaicin Sinopharm Group

[0111] Preparation method:

[0112] Step 1: Weigh 10 g of activated carbon with a particle size of 5 - 10 mm and 20 g of zeolite with a particle size of 10 - 20 mm, and mix them evenly;

[0113] Step 2: Add 2 g of methyl anthranilate, 4 g of cinnamaldehyde, 2 g of peppermint oil, and 1 g of capsaicin to the mixed solid obtained in Step 1 in sequence for adsorption to obtain a granular composition containing bird repellent active ingredients. After standing at room temperature for 3 hours for adsorption, the saturated adsorption rate is measured to be 55%, which means that 30 g of the mixed solid of activated carbon and zeolite can adsorb 16.5 g of bird repellent active ingredients.

[0114] Comparative Example 2

[0115] The sources of the particulate matrix and the raw materials of the bird repellent active ingredients prepared in Comparative Example 2 are shown in Table 10.

[0116] Table 10 Particulate matrix and raw materials of bird repellent active ingredients in Comparative Example 2

[0117]

[0118]

[0119] Preparation method:

[0120] Step 1: Weigh 10 g of kaolin with a particle size of 20 - 30 mm and 20 g of molecular sieve with a particle size of 5 - 10 mm, and mix them evenly;

[0121] Step 2: Add 2 g of methyl anthranilate, 4 g of cinnamaldehyde, 2 g of peppermint oil, and 1 g of capsaicin to the mixed solid obtained in Step 1 in sequence for adsorption to obtain a granular composition containing bird repellent active ingredients. After standing at room temperature for 3 hours for adsorption, the saturated adsorption rate is measured to be 60%, which means that 30 g of the mixed solid of activated carbon and zeolite can adsorb 18 g of bird repellent active ingredients.

[0122] Comparative Example 3

[0123] The sources of the raw materials of the polymer gel in Comparative Example 3 are shown in Table 11, and the sources of the raw materials of the bird repellent active ingredients and the photochromic filler are shown in Table 12.

[0124] Table 11 Raw materials of the polymer gel in Comparative Example 3

[0125] Raw materials Supplier company Acrylic acid Aladdin Industrial Corporation N,N’-Methylenebisacrylamide Macklin Biochemical Co., Ltd. Benzoyl peroxide Sinopharm Group N,N’-Dimethylaniline Sinopharm Group N,N’-Dimethylformamide Meryer Chemical Technology

[0126] Preparation of the polymer gel precursor solution:

[0127] Step 1: Weigh 5 g of acrylic acid and dissolve it in 20 ml of N,N'-dimethylformamide;

[0128] Step 2: Add 1 g of N,N'-methylenebisacrylamide to the solution in Step 1, and stir with a magnetic stirrer at a speed of 400 revolutions per minute for 20 minutes to obtain a clear mixed solution;

[0129] Step 3: Add 1 g of benzoyl peroxide and 20 μL of N,N'-dimethylaniline to the solution in Step 2, stir with a magnetic stirrer at 50 °C at a speed of 300 revolutions per minute for 10 minutes. After the reaction solution returns to room temperature, a polymer gel precursor solution is obtained.

[0130] Table 12 Raw materials of the bird repellent active ingredient in Comparative Example 3

[0131] Raw materials Supplier company Methyl anthranilate Sinopharm Group Camphor oil Sinopharm Group

[0132] Preparation of the photochromic bird repellent gel material:

[0133] Step 1: Add 5 g of methyl anthranilate and 3 g of camphor oil to the polymer gel precursor solution in sequence, and mix with a stirring mixer at 350 revolutions per minute for 20 minutes to obtain a polymer gel precursor solution containing a bird repellent active ingredient;

[0134] Step 2: Quickly transfer the polymer gel precursor solution containing the bird repellent active ingredient to a silicone rubber mold, and react at 30 °C for 20 hours to complete cross-linking, obtaining a bird repellent gel material.

[0135] Comparative Example 4

[0136] The raw material sources of the polymer gel in Comparative Example 4 are shown in Table 13, and the raw material sources of the bird repellent active ingredient and the photochromic filler are shown in Table 14.

[0137] Table 13 Raw materials of the polymer gel in Comparative Example 4

[0138] Raw materials Supplier company Acrylic acid Aladdin Industrial Corporation N,N’-Methylenebisacrylamide Macklin Biochemical Co., Ltd. Benzoyl peroxide Sinopharm Group N,N’-Dimethylaniline Sinopharm Group N,N’-Dimethylformamide Meryer Chemical Technology

[0139] Preparation of the polymer gel precursor solution:

[0140] Step 1: Weigh 5 g of acrylic acid and dissolve it in 20 ml of N,N'-dimethylformamide;

[0141] Step 2: Add 1 g of N,N'-methylenebisacrylamide to the solution in Step 1, and stir with a magnetic stirrer at a speed of 400 revolutions per minute for 20 minutes to obtain a clear mixed solution;

[0142] Step 3: Add 1 g of benzoyl peroxide and 20 μL of N,N'-dimethylaniline to the solution in Step 2, stir with a magnetic stirrer at 50 °C at a speed of 300 revolutions per minute for 10 minutes. After the reaction solution returns to room temperature, a polymer gel precursor solution is obtained.

[0143] Table 14 Raw materials of the bird repellent active ingredient in Comparative Example 4

[0144] Raw materials Supplier company Methyl anthranilate Sinopharm Group Cinnamaldehyde Sinopharm Group Peppermint oil Macklin Biochemical Co., Ltd. Capsaicin Sinopharm Group

[0145] Preparation of Photochromic Bird Repellent Gel Material

[0146] Step 1: Add 3 g of methyl anthranilate, 2 g of cinnamaldehyde, 2 g of peppermint oil, and 3 g of capsaicin into the polymer gel precursor solution in sequence, and use a stirring mixer to mix at 350 revolutions per minute for 20 minutes to obtain a polymer gel precursor solution containing bird repellent active ingredients;

[0147] Step 2: Quickly transfer the polymer gel precursor solution containing bird repellent active ingredients to a silicone rubber mold, and react at 30 °C for 20 hours to make it fully cross-linked, obtaining a photochromic bird repellent gel material.

[0148] Test Example 1

[0149] Test the bird repellent effects of Examples 1-4 and Comparative Examples 1-4 respectively. The test sites are a certain high-speed railway, power grid and its nearby areas in the east.

[0150] Specific operation: The bird repellent used in Test Example 1 is selected from the photochromic bird repellent gel materials of Examples 1-4 and the granular bird repellents of Comparative Examples 1-4. Among them, the application method of Comparative Examples 1-4 is to wrap the granular bird repellent drug with non-woven fabric and hang it at the test section. The application method of Examples 1-4 is to coat the polymer gel precursor solution of the photochromic bird repellent on the wall of the test section. After cross-linking, a colorless or light yellow gel layer is formed on the wall surface. The drug dosage per 300 square meters is 2.5 kg. Uniformly distribute 10 points in the test area, and use a bird repellent radar or drone to monitor the bird activities in real time. The total number of test days is recorded as S0. If no bird activities are captured by the bird repellent radar or drone, it is recorded as the effective bird repellent days S1. The avoidance rate is the ratio of the effective bird repellent days to the total number of test days. Each group of experiments is parallel processed three times, and the average avoidance rate is taken. The bird repellent results are shown in Table 15:

[0151] Table 15 Bird Repellent Effects of Comparative Examples 1-4 and Examples 1-4

[0152]

[0153] After analyzing the data in Table 15, it can be seen that:

[0154] The photochromic bird repellent gel material product prepared by the present invention is a polymer gel with a complete three-dimensional network structure obtained by free radical polymerization. After adding bird repellent active ingredients such as methyl anthranilate into the gel material, methyl anthranilate can act as a donor or acceptor of hydrogen bonds and generate hydrogen bond interactions with the polymer gel network. The test results show that the effective bird repellent days are significantly increased. In addition, by dispersing the photochromic filler in the gel material containing bird repellent active ingredients, the material can present orange-red after being irradiated by ultraviolet light, and can effectively drive away most birds through the synergistic action of vision and smell, and the bird repellent effect is remarkable.

[0155] The present invention is not limited to the raw materials and steps in the above embodiments, and the above embodiments are only for facilitating the understanding of the content of the present invention.

Claims

1. A photochromic bird-repellent gel material, characterized in that: The raw materials of the photochromic bird-repellent gel material include the following components in parts by weight: 6-20 parts by weight of bird repellent active ingredient; 5.5-13 parts by weight of polymer gel; 6-15 parts by weight of photochromic filler dispersion; 20-30 parts by weight of solvent; The bird repellent active ingredient comprises 1-5 parts of methyl anthranilate, 2-5 parts of cinnamaldehyde, 2-5 parts of peppermint oil, and 1-5 parts of capsaicin; The photochromic filler dispersion comprises 1-5 parts by weight of the photochromic filler and 5-10 parts by weight of the dispersion solvent; The photochromic filler is a spirooxazine photochromic compound, and the structural formula is: Wherein: R1=CH3, C6H6, CH2CH2OH or (CH2)5CH3; R2=NO2, H or OCH3; R3=H, OCH3 or NO2.

2. The photochromic bird-repellent gel material according to claim 1, characterized in that: The polymer gel comprises 5-10 parts of monomer, 0-1.5 parts of cross-linking agent and 0.5-1.5 parts of initiator.

3. The photochromic bird-repellent gel material according to claim 1, characterized in that: The polymer gel is a chemically synthesized gel or a natural polymer gel; the chemically synthesized gel is selected from one or more of polyvinyl alcohol gel, polyacrylamide gel, polyacrylic acid gel, polyisopropylacrylamide gel, polyacrylic acid-itaconic acid copolymer gel or acrylic acid-maleic acid copolymer gel; the natural polymer gel is selected from one or more of hyaluronic acid gel, alginate gel, chitosan gel or gelatin gel.

4. The photochromic bird-repellent gel material according to claim 1, characterized in that: The crosslinking agent is selected from one or more of N,N'-methylenebisacrylamide, ethylene glycol diacrylate, trimethylolpropane triacrylate or glutaraldehyde, and the initiator is selected from one or more of azobisisobutyronitrile, dibenzoyl peroxide, N,N'-dimethylanilinetetramethylethylenediamine, ammonium persulfate or potassium persulfate.

5. The photochromic bird-repellent gel material according to claim 1, characterized in that: The particle size of the photochromic filler is 10-100 nanometers.

6. A method for preparing a photochromic bird-repellent gel material, characterized in that: The preparation method comprises the following steps: (1) preparing a gel precursor solution containing a bird repellent active ingredient: uniformly mixing 5-10 parts of a monomer, 0-1.5 parts of a cross-linking agent, 0.5-1.5 parts of an initiator, and 20-30 parts of a solvent to obtain a gel precursor solution, and then adding 1-5 parts of methyl anthranilate, 2-5 parts of cinnamaldehyde, 2-5 parts of peppermint oil, and 1-5 parts of capsaicin as a bird repellent active ingredient to the gel precursor solution to obtain a gel precursor solution containing a bird repellent active ingredient; (2) Preparing a photochromic filler dispersion: dispersing 1-5 parts of a spirooxazine photochromic compound in 5-10 parts of a dispersion solvent by high pressure homogenization or ball milling to prepare a 10-100 nanometer dispersion; the photochromic filler is a spirooxazine photochromic compound having the structural formula: Wherein: R1=CH3, C6H6, CH2CH2OH or (CH2)5CH3; R2=NO2, H or OCH3; R3=H, OCH3 or NO2; (3) Composite molding: 6-15 parts of the photochromic filler dispersion are added to the gel precursor containing the bird repellent active ingredient, stirred evenly, and the precursor is gelled to obtain a photochromic bird repellent gel material.

7. The preparation method according to claim 6, characterized in that: In step (2), the order of adding the bird repellent active ingredients is to first add the liquid ingredients: methyl anthranilate, cinnamaldehyde, and peppermint oil, and then add the solid ingredient: capsaicin.

8. The preparation method according to claim 6, characterized in that: In step (3), the stirring rate is 300-500 rpm, and the temperature is controlled at 20-70° C. for gelation for 12-24 hours.

9. Use of the photochromic bird-repellent gel material according to any one of claims 1 to 5 in the fields of agricultural production, power facilities or airports.

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