CN118716375A - A block bird repellent containing plant extracts and its preparation method and application - Google Patents

Abstract

The invention provides a block bird repellent containing plant extracts, which comprises, by weight, 15-25 parts of methyl anthranilate, 3-7 parts of a vegetable oil solvent, 60-75 parts of soap natural grease, 20-25 parts of peppermint oil, 15-20 parts of lavender essential oil, 5-8 parts of zanthoxylum oil, 1-3 parts of lemon essential oil, 15-17 parts of alkali, 1-3 parts of a plant antibacterial agent and 170-180 parts of deionized water. In another aspect, the invention also provides a preparation method of the block bird repellent containing plant extracts, which comprises the following steps: s1, preparing a raw material mixture; s2, preparing alkali liquor; s3, saponification reaction; s4, adding an antibacterial agent; s5, forming the block bird repellent. The invention solves the problems that the existing bird repellent is difficult to ensure the slow release effect or complex in formula, high in cost or insufficient in environmental protection, and the prepared block bird repellent has the advantages of long slow release period, good slow release effect, simple formula, low cost and environmental protection.

Description

A block bird repellent containing plant extracts and its preparation method and application

Technical Field

The invention relates to the technical field of bird repellent, and in particular to a block bird repellent containing plant extracts, and a preparation method and application thereof.

Background Art

Bird strike accidents have occurred from time to time in aviation history, and most of them occur during the low-altitude flight phase of aircraft takeoff and landing or before and after takeoff and landing, causing mechanical damage or even casualties, posing a serious threat to aviation safety. Therefore, as a place for aircraft takeoff and landing, airport managers need to take measures to reduce the appearance of birds near the airport to ensure aviation safety.

Traditional bird repellent methods often use sound or visual effects to scare birds, or use high-cost bird-proof nets or other physical barriers to curb bird activities, but these methods are either limited and not sustainable, or expensive and may affect airport operations. Therefore, finding a cost-effective and sustainable bird repellent method is crucial for airport management.

In recent years, bird repellents have received increasing attention due to their environmental friendliness, economy, effectiveness, and ease of use. Specifically, bird repellents are biological agents, which come in different types, such as granular bird repellents, powdered bird repellents, aqueous bird repellents, and paste bird repellents. They are used by spreading them and slowly release a special fragrance that affects the nervous system or respiratory system of birds. Birds will fly away after smelling it and will not come back during their memory period. Since bird repellents rely on the volatilization of active ingredients to work, in order to make the bird repellent have a long-lasting and stable slow-release effect, people will take measures to control the volatilization process of the bird repellent to extend its effective volatilization time. For example:

Patent CN112167247A discloses a microcapsule bird repellent and insect repellent, which includes a microcapsule wall material, and the microcapsule wall material is coated on the surface of the compound medicine to slow down the volatilization rate of the compound medicine, thereby achieving the purpose of sustained release. However, the microcapsule wall material completely encapsulates all the compound medicines, which inevitably leads to a large volatilization amount of the microcapsule bird repellent and insect repellent in the early stage, while the volatilization amount gradually decreases in the later stage, that is, the volatilization of the drug properties during the entire action period is difficult to control, which not only causes waste but also fails to achieve a stable bird repellent effect; in addition, once the microcapsule wall material is damaged, its sustained release effect is also difficult to guarantee.

Patent CN108157398A discloses a soap-based bird-repellent composition, the raw materials of which include methyl anthranilate, clove oil, lemon oil, cinnamon oil, spearmint oil, oregano oil, thyme essential oil, antioxidant, light stabilizer, vegetable oil solvent, emulsifier, antifreeze agent and soap. The bird-repellent composition has obvious synergistic effect of each component, and can also prevent the decomposition and failure of the bird-repellent components in bad weather, thereby greatly extending the shelf life of the product. Obviously, the bird-repellent composition improves the stability in bad weather through the action of various additives to extend its effective volatilization rate; but the excessive amount of additives makes the formula complicated and the cost high, and poses a potential threat to the ecological environment.

It can be seen that the existing bird repellents still have many shortcomings. Either the sustained-release effect is difficult to guarantee, or the formula is complicated, the cost is high, or it is not environmentally friendly, and needs to be improved.

Summary of the invention

In view of the deficiencies in the prior art, the present invention provides a block bird repellent containing plant extracts, which solves the problems that the bird repellents prepared by the prior art either have a difficult to ensure sustained-release effect, or have a complex formula, high cost or are not environmentally friendly.

According to an embodiment of the present invention, a block bird repellent containing plant extracts comprises raw materials, by weight, including 15-25 parts of methyl anthranilate, 3-7 parts of vegetable oil solvent, 60-75 parts of natural oil for soap, 20-25 parts of peppermint oil, 15-20 parts of lavender essential oil, 5-8 parts of prickly ash oil, 1-3 parts of lemon essential oil, 15-17 parts of alkali, 1-3 parts of plant antibacterial agent and 170-180 parts of deionized water.

On the other hand, according to an embodiment of the present invention, there is also provided a method for preparing a block bird repellent containing a plant extract, which comprises the following steps:

S1, preparing a raw material mixture: mixing methyl anthranilate, a vegetable oil solvent, a natural oil for soap, peppermint oil, lavender essential oil, prickly ash oil, and lemon essential oil and stirring uniformly to obtain a raw material mixture;

S2, preparing alkali solution: adding alkali into deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heating the raw material mixture to 50-90°C under stirring, then adding alkali solution dropwise, stirring and keeping warm for a certain period of time after the addition of alkali solution is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding a plant antibacterial agent to the bird repellent soap solution and stirring evenly, cooling to room temperature, and filtering to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

On the other hand, according to an embodiment of the present invention, there is also provided a use of the block bird repellent containing plant extracts in repelling birds at airports.

The technical principle of the present invention is:

The soap base material is formed by reacting natural oil and alkali to form a solid soap base material, and the soap base material is combined with the liquid oily agent as a drug base, and is closely connected to each other through hydrogen bonding to obtain the block bird repellent, and the surface layer or the interior of the block bird repellent is a mixture of the drug base and the liquid oily agent. When the bird repellent is used, the liquid oily agent and the drug base of the surface are exposed to the air, wherein the liquid oily agent continuously evaporates, giving full play to its bird and insect repellent efficacy, and as time goes by, many holes are formed on the drug base of the surface layer, causing the drug base of the surface layer to gradually loosen and collapse, exposing the fresh bird and insect repellent components inside, and the fresh bird repellent inside can still maintain a good efficacy; in this way, with the volatilization and collapse layer by layer, the purpose of sustained release is finally achieved; and since each layer is a mixture of the drug base and the liquid oily agent, the stability of the efficacy is guaranteed during the entire volatilization process. In addition, by controlling the content of each raw material to adjust the ratio of the agent base to the liquid oil agent, the volatilization rate can be flexibly controlled to achieve the required total volatilization time. Finally, after the bird repellent has fully volatilized its efficacy, the soap-based substance as the agent base can gradually turn into powder over time, which will not cause a burden on the environment.

Compared with the prior art, the present invention has the following beneficial effects:

1. The bird repellent ingredients of the present invention mainly come from plant extracts, which are more natural and environmentally friendly. On the one hand, the soap-based natural oils of the bird repellent of the present invention mainly come from plant extracts, and the soap-based substances obtained by reacting with alkali are non-toxic and harmless to the environment, and the soap-based substances can also be powdered within a certain period of time, further ensuring its environmental friendliness; on the other hand, the basic bird repellent ingredient of the bird repellent of the present invention uses methyl anthranilate, which is produced from natural spice plants, and it is a synthetic spice for food that is allowed to be used according to national regulations, and it has almost no negative impact on the environment; on the other hand, the solvents, antibacterial agents and other auxiliary materials of the bird repellent of the present invention are all plant extracts, which are more environmentally friendly and natural compared with traditional chemical ingredients or various additives in the prior art, will not have a negative impact on the ecosystem, and are more in line with modern environmental protection concepts.

2. Long sustained release time and stable bird and insect repellent effects. On the one hand, the bird repellent of the present invention adopts a method of mixing and tightly combining a medicament matrix with a liquid oily medicament, so that the liquid oily medicament volatilizes under the support of the medicament matrix to exert the bird and insect repellent effect, and gradually exposes new bird and insect repellent components as the medicament matrix collapses layer by layer, so that the volatilization process is slow and effective, and the sustained release period is greatly extended, thereby ensuring the durability and stability of the bird and insect repellent effect; on the other hand, since the medicament matrix and the liquid oily medicament are very closely connected, the block bird repellent structure is tight and firm, and the block bird repellent itself has a certain weight, so that the bird repellent also has a good windproof and waterproof effect. When used outdoors, it is not easy to be blown away by the wind or quickly disintegrate, break or dissolve after encountering rain, that is, the structure of the bird repellent of the present invention can remain stable for a long time, thereby further ensuring its sustained release effect and the stability of the bird repellent effect during its sustained release period.

3. Volatility controllability. On the one hand, by flexibly adjusting the content of each raw material to adjust the ratio of the agent matrix to the liquid oily agent, the proportion of the liquid oily agent on each layer of the bird repellent block can be adjusted, thereby controlling the volatilization time of the liquid oily agent on each layer, and then controlling the volatilization rate and volatilization time of the entire bird repellent block, which can flexibly meet different needs; on the other hand, the bird repellent block collapses layer by layer, which not only prolongs the sustained release time, but also makes the volatilization more uniform during the entire sustained release period, that is, the volatilization process of the bird repellent can be controlled. This controllable volatility enables the bird repellent to release the active ingredient at the required time and rate, thereby improving the utilization rate and duration of the agent.

4. Simple formula, low cost, easy to use, and wide application range. The block bird repellent of the present invention has raw materials mostly from plant extracts in its formula, which are natural, environmentally friendly, widely available, and low in price, and does not contain various additives, which further reduces the cost. In addition, its long sustained-release period also makes it more cost-effective; its raw materials have both bird repellent and insect repellent effects, wherein the insect repellent effect reduces bird food, further ensuring the effect of bird repellent; it is a block, easy to use, and only needs to be placed or hung in a suitable place, and after the bird repellent has volatilized all its medicinal effects, its soap-based substance as the agent matrix can be gradually powdered over time, without the need for recovery, and will not bring burden to the staff; it is applicable to various places that need bird repellent, such as airports and orchards.

5. The preparation method is simple, efficient, environmentally friendly, and does not emit three wastes.

Preferably, the plant antibacterial agent includes at least one of castor oil, wasabi oil and mustard oil.

Beneficial effects: they are all derived from plant extracts, are natural and environmentally friendly, and have good antibacterial effects, thus ensuring the stability of the block bird repellent; and they all have certain bird and insect repellent effects, thus promoting the bird and insect repellent effects of the block bird repellent.

Preferably, the base is calculated as ^OH- ; the base includes any one of NaOH, KOH and triethanolamine.

Beneficial effects: It is a commonly used alkali, cheap and easy to obtain.

Preferably, the natural oil for soap includes at least one of palm oil, coconut oil and olive oil.

Beneficial effects: All of them are derived from plant extracts, are natural and environmentally friendly, and have certain bird-repellent and insect-repellent effects, so that the agent matrix formed by the soap-based substance can also have bird-repellent and insect-repellent effects, thereby promoting the bird-repellent and insect-repellent effects of the block bird repellent.

Preferably, the plant oil solvent includes at least one of eucalyptus oil, eucalyptus oil, zedoary oil, camphor oil and bay leaf oil.

Beneficial effects: They are all derived from plant extracts, are natural and environmentally friendly, and have good solubility in other oily raw materials, thereby promoting the mixing of the agent matrix and the liquid oily agent and being able to mix them evenly, ensuring the stability of the effect and the controllability of volatility of the block bird repellent during the sustained release period; and they all have certain bird and insect repellent effects, which promotes the bird and insect repellent effects of the block bird repellent.

Preferably, in step S3, the alkali solution is added dropwise for 1-2 hours.

Beneficial effect: Slow dripping can not only promote the full progress of the reaction, but also strictly control the amount of alkali solution to avoid excessive use of alkali solution and pollution of the environment.

Preferably, in step S3, the insulation time after the addition of the alkali solution is completed is 1-2 hours.

Beneficial effects: ensuring the full progress of the saponification reaction, promoting the interaction between the drug matrix and the liquid oily drug to make the two closely combined.

Preferably, in step S4, the filtering method includes at least one of ordinary gravity filtration, pressure filtration and reduced pressure filtration.

Beneficial effects: The filtering method is flexible, among which pressure filtration or reduced pressure filtration can improve the filtering efficiency.

DETAILED DESCRIPTION

The technical solution of the present invention is further described below in conjunction with embodiments.

1. The raw materials come from the following manufacturers: Ji'an Wanyi Spice, Yunnan Yuexin Spice Technology Co., Ltd., Kunming Hengrun Spice; their purity and source information are as follows:

Methyl anthranilate: purity 99%, produced in a chemical plant;

Eucalyptus oil: 100% purity, extracted from eucalyptus leaves;

Eucalyptus oil: 100% pure, distilled from eucalyptus;

Yucao oil: 100% pure, extracted from yucao fruit;

Camphor oil: purity 98%, extracted from camphor tree;

Bay leaf oil: 100% pure, distilled from laurel leaves;

Palm oil: 100% pure, pressed from palm fruit;

Coconut oil: 100% pure, pressed from coconut fruit;

Olive oil: 100% pure, pressed from olive fruits;

Peppermint oil: 100% pure, extracted from pepper and mint;

Lavender essential oil: 100% pure, extracted from lavender plants;

Sichuan pepper oil: 100% purity, extracted from Sichuan pepper;

Lemon essential oil: 100% pure, extracted from lemon fruit;

Alkali: purity 99%, made in chemical plant;

Castor oil: 100% pure, pressed from castor seeds;

Wasabi oil: 100% pure, pressed from wasabi seeds;

Mustard oil: 100% pure, pressed from mustard seeds;

Deionized water: 100% purity, obtained from a water treatment plant.

2. In the following embodiments, the filtration methods involved are all vacuum filtration. Specifically, vacuum filtration is a method of filtering by reducing the pressure in a suction filter bottle. This method can accelerate the filtration and make the precipitate sucked dry;

In addition, you can also choose ordinary gravity filtration or filter press, or a combination of the above filtration methods; among them, ordinary gravity filtration is to place the material to be filtered directly on filter paper, filter cloth or filter net without applying external force, and use the gravity of the liquid to settle and pass through the filter paper, filter cloth or filter net. After a certain period of time, solid-liquid separation is achieved; filter press is to use a certain pressure to make the material produce a filter cake on the filter cloth to achieve the purpose of solid-liquid separation. The principle is to use two filter cloths to clamp the material, and by applying a certain pressure, the solid matter in the material is isolated to form a filter cake, and the filtrate is adsorbed by the filter cloth and flows out.

The above-mentioned ordinary gravity filtration, pressure filtration or reduced pressure filtration are all existing technologies and will not be described in detail below.

Example 1

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, preparing a raw material mixture: weighing the following raw materials by weight: 20 g of methyl anthranilate, 5 g of eucalyptus oil, 60 g of palm oil, 20 g of peppermint oil, 15 g of lavender essential oil, 5 g of prickly ash oil, and 1 g of lemon essential oil, mixing and stirring the raw materials to obtain a raw material mixture;

S2, preparing alkali solution: adding 15 g of NaOH to 170 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 70°C under stirring, then add alkali solution dropwise for 1 hour, and stir and keep warm for 1 hour after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 1 g of mustard oil to the bird repellent soap solution and stirring evenly, then cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Example 2

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, preparing a raw material mixture: weighing the following raw materials by weight: 15 g of methyl anthranilate, 3 g of eucalyptus oil, 65 g of palm oil, 22.5 g of peppermint oil, 17.5 g of lavender essential oil, 6.5 g of prickly ash oil, and 2 g of lemon essential oil, mixing and stirring the raw materials to obtain a raw material mixture;

S2, preparing alkali solution: adding 16 g of NaOH to 175 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 50°C under stirring, then add alkali solution dropwise for 1.5 hours, and stir and keep warm for 1.5 hours after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 2 g of mustard oil to the bird repellent soap solution and stirring evenly, cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Example 3

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, prepare a raw material mixture: weigh the following raw materials: methyl anthranilate 25g, eucalyptus oil 7g, palm oil 75g, peppermint oil 25g, lavender essential oil 20g, prickly ash oil 8g, lemon essential oil 3g,

After mixing and stirring the raw materials evenly, a raw material mixture is obtained;

S2, preparing alkali solution: adding 17 g of NaOH to 180 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 90°C under stirring, then add alkali solution dropwise for 2 hours, and stir and keep warm for 2 hours after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 3 g of mustard oil to the bird repellent soap solution and stirring evenly, cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Example 4

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, preparing a raw material mixture: weighing the following raw materials by weight: 20 g of methyl anthranilate, 5 g of eucalyptus oil, 60 g of coconut oil, 20 g of peppermint oil, 15 g of lavender essential oil, 5 g of prickly ash oil, and 1 g of lemon essential oil, mixing and stirring the raw materials to obtain a raw material mixture;

S2, preparing alkali solution: adding 15 g of KOH to 170 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 70°C under stirring, then add alkali solution dropwise for 1 hour, and stir and keep warm for 1 hour after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 1 g of wasabi oil to the bird repellent soap solution and stirring evenly, then cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Example 5

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, preparing a raw material mixture: weighing the following raw materials by weight: 20 g of methyl anthranilate, 5 g of eucalyptus oil, 60 g of olive oil, 20 g of peppermint oil, 15 g of lavender essential oil, 5 g of prickly ash oil, and 1 g of lemon essential oil, mixing and stirring the raw materials to obtain a raw material mixture;

S2, preparing alkali solution: adding 15 g of triethanolamine to 170 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 70°C under stirring, then add alkali solution dropwise for 1 hour, and stir and keep warm for 1 hour after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 1 g of castor oil to the bird repellent soap solution and stirring evenly, then cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Example 6

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, preparing a raw material mixture: weighing the following raw materials by weight: 20 g of methyl anthranilate, 5 g of camphor oil, 60 g of palm oil, 20 g of peppermint oil, 15 g of lavender essential oil, 5 g of prickly ash oil, and 1 g of lemon essential oil, mixing and stirring the raw materials to obtain a raw material mixture;

S2, preparing alkali solution: adding 15 g of NaOH to 170 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 70°C under stirring, then add alkali solution dropwise for 1 hour, and stir and keep warm for 1 hour after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 1 g of mustard oil to the bird repellent soap solution and stirring evenly, cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Example 7

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, preparing a raw material mixture: weighing the following raw materials by weight: 20 g of methyl anthranilate, 5 g of bay leaf oil, 60 g of palm oil, 20 g of peppermint oil, 15 g of lavender essential oil, 5 g of prickly ash oil, and 1 g of lemon essential oil, mixing and stirring the raw materials to obtain a raw material mixture;

S2, preparing alkali solution: adding 15 g of NaOH to 170 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 70°C under stirring, then add alkali solution dropwise for 1 hour, and stir and keep warm for 1 hour after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 1 g of mustard oil to the bird repellent soap solution and stirring evenly, cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Example 8

A method for preparing a block bird repellent containing a plant extract comprises the following steps:

S1, preparing a raw material mixture: weighing the following raw materials by weight: 20 g of methyl anthranilate, 1 g of eucalyptus oil, 1 g of eucalyptus oil, 1 g of eucalyptus oil, 1 g of camphor oil, 1 g of laurel leaf oil, 20 g of palm oil, 20 g of coconut oil, 20 g of olive oil, 20 g of peppermint oil, 15 g of lavender essential oil, 5 g of prickly ash oil, and 1 g of lemon essential oil, mixing and stirring the raw materials to obtain a raw material mixture;

S2, preparing alkali solution: adding 15 g of NaOH to 170 g of deionized water to dissolve to prepare alkali solution;

S3, saponification reaction: heat the raw material mixture to 70°C under stirring, then add alkali solution dropwise for 1 hour, and stir and keep warm for 1 hour after the addition is completed to obtain bird repellent soap solution;

S4, adding an antibacterial agent: adding 0.4 g of mustard oil, 0.3 g of castor oil, and 0.3 g of wasabi oil to the bird repellent soap solution, and stirring evenly, cooling to room temperature, and then filtering under reduced pressure to obtain an antibacterial bird repellent soap block;

S5, forming a block bird repellent: heat and melt the antibacterial bird repellent soap block and pour it into a mold. After standing and cooling, a block bird repellent is obtained.

Comparative Example 1

Similar to Example 1, except that 10 g of methyl anthranilate was added.

Comparative Example 2

Similar to Example 1, except that 30 g of methyl anthranilate was added.

Comparative Example 3

Similar to Example 1, except that 30 g of palm oil was added.

Comparative Example 4

Similar to Example 1, except that 90 g of palm oil was added, and the amount of NaOH was adjusted to 25 g and the amount of deionized water was adjusted to 200 g.

Comparative Example 5

Similar to Example 1, the difference is that no antibacterial agent mustard oil is added, and the final block bird repellent forming step is directly carried out after the saponification reaction.

Comparative Example 6

Similar to Example 1, except that peppermint oil was not added.

Comparative Example 7

Similar to Example 1, except that peppermint oil was replaced with spearmint oil.

Comparative Example 8

Similar to Example 1, except that no lavender essential oil was added.

Comparative Example 9

Similar to Example 1, except that no pepper oil is added.

Comparative Example 10

Similar to Example 1, except that no lemon essential oil was added.

Test Example 3: Product bird repellent effect test

The test site was selected from a civil airport in a prefecture-level city in the southwest region. The block bird repellent products 1-18 prepared in Examples 1-8 and Comparative Examples 1-10 were placed one at intervals of 15-20 meters, and the placement locations were all in the key bird activity areas of the flight area. Tracking observation was continued every day for 3 months. The test results are shown in Table 1:

Table 1 Bird repellent effect test results of block bird repellent products prepared in Examples 1 to 8 and Comparative Examples 1 to 10

As can be seen from Table 1, the sustained-release period of the block bird repellent prepared in Examples 1-8 can reach 3 months, and the bird repellent and insect repellent effect within the sustained-release period is very good; the amount of methyl anthranilate added in Comparative Example 1 is small, and the bird repellent effect is reduced; the amount of methyl anthranilate added in Comparative Example 2 is too much, and although the bird repellent effect is also very good, it causes a waste of raw materials; the amount of palm oil added in Comparative Example 3 is too little, resulting in insufficient saponification reaction, so that too little soap-based substance is formed, so that the structure of the block bird repellent is not stable enough, the molding effect is not good, and it quickly disintegrates and volatilizes. Since it volatilizes quickly, the bird repellent and insect repellent effect during the volatilization period is still good; the amount of palm oil added in Comparative Example 4 is too much, so that the soap-based substance accounts for too high a proportion in the bird repellent block. On the one hand, the disintegration of the soap base requires more time, so the sustained-release time is increased, and on the other hand, the proportion of liquid oily agents is reduced, resulting in The bird repellent and insect repellent effect during the sustained release period is reduced; in comparative example 5, no antibacterial agent is added. Since there are too many natural ingredients in the prepared block bird repellent, the rate of its decomposition by microorganisms is accelerated, resulting in its disintegration and volatilization in about one month. Of course, the sustained release time of about one month is also good, which should be attributed to the antibacterial effect of the natural ingredients itself; in comparative example 6, no peppermint oil is added, the sustained release period is greatly shortened and the bird repellent and insect repellent effect is also reduced; in comparative example 7, peppermint oil is replaced with green mint oil, and the bird repellent and insect repellent effect is also reduced. Combined with comparative example 6, it is explained that the peppermint oil component contributes more to the sustained release effect of this product; in comparative example 8, lavender essential oil is not added, the sustained release period is also shortened a lot and the bird repellent and insect repellent effect is also reduced; in comparative example 9, pepper oil is not added, and the bird repellent and insect repellent effect is reduced; in comparative example 10, lemon essential oil is not added, and the bird repellent effect is also not good.

In summary, the block bird repellent of the present application adopts a suitable raw material composition and its ratio, combined with a simple and efficient preparation method. It not only has a long sustained-release period, but also has a good bird and insect repellent effect within the sustained-release period. In addition, it is easy to use. When used in areas where birds are more active in airports, it not only greatly reduces the probability of bird strike accidents, but also does not cause burden or harm to the environment and ecology. It is also low in cost and suitable for large-scale use, which is very beneficial to airport management.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims (10)

1. A block bird repellent containing plant extracts is characterized by comprising, by weight, 15-25 parts of methyl anthranilate, 3-7 parts of a vegetable oil solvent, 60-75 parts of soap natural oil, 20-25 parts of peppermint oil, 15-20 parts of lavender essential oil, 5-8 parts of zanthoxylum oil, 1-3 parts of lemon essential oil, 15-17 parts of alkali, 1-3 parts of a plant antibacterial agent and 170-180 parts of deionized water.

2. A block bird repellent comprising a plant extract of claim 1, wherein said plant antibacterial agent comprises at least one of castor oil, horseradish oil and mustard oil.

3. A block bird repellent comprising a plant extract according to claim 1, wherein the base is OH ^-; the alkali comprises any one of NaOH, KOH and triethanolamine.

4. A block bird repellent comprising a plant extract according to claim 1, wherein the natural soap oil comprises at least one of palm oil, coconut oil and olive oil.

5. The plant extract-containing block bird repellent according to claim 1, wherein the vegetable oil solvent comprises at least one of eucalyptus oil, jades oil, camphor oil, laurel leaf oil.

6. A method of preparing a block bird repellent containing a plant extract as claimed in any one of claims 1 to 5, comprising the steps of:

s1, preparing a raw material mixture: mixing methyl anthranilate, vegetable oil solvent, soap natural oil, peppermint oil, lavender essential oil, pricklyash peel oil and lemon essential oil, and stirring to obtain a raw material mixture;

S2, preparing alkali liquor: adding alkali into deionized water for dissolution to prepare alkali liquor;

s3, saponification reaction: heating the raw material mixture to 50-90 ℃ under stirring, then dripping alkali liquor, stirring and preserving heat for a certain time after the alkali liquor dripping is finished to obtain bird repellent soap solution;

s4, adding an antibacterial agent: adding a plant antibacterial agent into the bird repellent soap solution, uniformly stirring, cooling to room temperature, and filtering to obtain antibacterial bird repellent soap blocks;

S5, forming a block bird repellent: and (3) heating and melting the antibacterial bird repellent soap blocks, pouring the antibacterial bird repellent soap blocks into a mold, and standing and cooling to obtain the block bird repellent.

7. The method for preparing a block bird repellent containing plant extracts according to claim 6, wherein in step S3, the alkali solution is added dropwise for 1-2 hours.

8. The method for preparing a block bird repellent containing plant extract according to claim 6, wherein in step S3, the incubation time after the completion of the alkali solution dropwise addition is 1 to 2 hours.

9. The method of preparing a block bird repellent containing plant extracts according to claim 6, wherein in step S4, the filtration means includes at least one of normal gravity filtration, press filtration, and reduced pressure filtration.

10. Use of a block bird repellent comprising a plant extract as claimed in any one of claims 1 to 5 in airport bird repellent.