A rat-proof plastic product

Abstract

The present invention provides a rodent-proof plastic product, comprising a plastic body layer and a rodent-proof layer disposed on the outer surface of the plastic body layer; the rodent-proof layer is a plastic rodent-proof layer or a paint rodent-proof layer; the rodent-proof layer has a plurality of nanoporous drug carriers; and a rodent repellent is disposed within the nanoporous drug carriers. Nanoporous drug carriers (DDS), which have been widely used in the medical industry for drug infusion into the human body, are now used on plastic products and filled with a rodent repellent. Due to the extremely strong physical adsorption properties (surface charge ‑3.05) and ion exchange properties of the nanoporous drug carriers, the rodent repellent is firmly absorbed, thereby effectively retaining the rodent repellent in the plastic product for a long time without migration or evaporation. When a mouse bites the plastic product, it will escape after biting the rodent repellent and will not bite the plastic product, thereby providing good protection for the plastic product.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic products, in particular to a rodent-proof plastic product. Background Art

[0002] Rats have extremely sharp teeth, and chewing plastic products is a form of gnaw. Once their teeth grow to a certain size, they can no longer close their mouths, leading to death from starvation. Rats spend their entire lives gnawing and grinding their teeth. When rats chew plastic products, such as electrical wiring, they can cause short circuits and fires, making them a "circuit killer." Plastic products refer to products made from synthetic resins such as polyethylene (PE), polyvinyl chloride (PVC), polystyrene (PS), polypropylene (PP), ABS, epoxy resins, or composites thereof.

[0003] Plastic products, such as electrical wires and cables, battery boxes, and hydrogen tanks, are currently at risk of being damaged by rats, posing a safety hazard. Traditionally, rodent control methods have involved adding repellent directly to the plastic protective layer. The strong irritation of the repellent, upon entering the rat's mouth, acts as a deterrent, forcing the rodent to give up chewing. However, due to the long-term exposure of cables to wind and rain, the repellent easily migrates and evaporates, resulting in a short shelf life of only three to five years. Currently, repellents are microencapsulated in plastic products, but the capsules themselves are molecular polymers and are subject to migration and decomposition, making their effectiveness limited to a short period of three to five years. Summary of the Invention

[0004] The purpose of the present invention is to provide a rodent-proof plastic product to solve the problems mentioned in the background technology.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A rodent-proof plastic product comprises a plastic body layer and a rodent-proof layer arranged on the outer surface of the plastic body layer; the rodent-proof layer is provided with a plurality of nanoporous drug carriers; the rodent-proof layer is a plastic rodent-proof layer or a paint rodent-proof layer; and the nanoporous drug carriers are provided with a rodent repellent.

[0007] To further describe the present invention, the nanoporous drug carrier is one of the following materials: diatom mineral, zeolite, pumice, graphene gel, carbon xerogel, nanopolymer sponge, xerogel, and aerogel.

[0008] To further describe the present invention, a hard protective layer is further provided on the outer side of the rat-proof layer.

[0009] To further describe the present invention, a plurality of hollow ceramic particles are provided on the hard protective layer.

[0010] To further describe the present invention, the plastic body layer is the outer sheath of the cable.

[0011] To further describe the present invention, the plastic body layer is a battery box for new energy vehicles.

[0012] To further describe the present invention, the plastic body layer is a hydrogen storage tank for new energy vehicles.

[0013] The beneficial effects of the present invention are:

[0014] Nanoporous drug carriers (DDS) have been widely used in the medical industry for drug infusion. Now, they are being applied to plastic products, filling them with rodent repellent. Because the nanoporous structure of the drug carrier has extremely strong physical adsorption properties (surface charge -3.05) and ion exchange properties, it firmly absorbs the rodent repellent, effectively retaining it in the plastic product for a long time without migration or evaporation. When a mouse bites the plastic product, it will escape after biting the rodent repellent and will not bite the plastic product, thus providing excellent protection for the plastic product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of a cable in Example 1 of the present invention;

[0016] Figure 2 yes Figure 1 A partial enlarged view of middle A;

[0017] Figure 3 It is an enlarged structural diagram of the diatom mineral of the present invention;

[0018] Figure 4 yes Figure 3 Cross-sectional view of AA;

[0019] Figure 5 This is a photo of the nanoporous drug carrier of the present invention observed under an electron microscope before being used as a medicine;

[0020] Figure 6 This is a photo of the nanoporous drug carrier of the present invention after drug addition observed under an electron scanning microscope. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings:

[0022] Example 1: Figure 1-2As shown, a rodent-proof plastic product includes a plastic body layer 1, which serves as the outer sheath 11 of a cable, and a rodent-proof layer 2 disposed on the outer surface of the plastic body layer 1. The rodent-proof layer 2 is a plastic rodent-proof layer or a paint rodent-proof layer. In this embodiment, a plastic rodent-proof layer is used. The rodent-proof layer 2 has a plurality of nanoporous drug carriers 21 thereon. The nanoporous drug carriers 21 are provided with a rodent repellent. The rodent repellent may be selected from substances disliked by rodents, ants, and birds, such as cycloheximide, nonanoic acid fragrance, oxalamide, capsaicin, and capsaicin.

[0023] Nanodrug carriers are nanoscale, microscopic drug delivery systems. Encapsulating drugs within these carriers and injecting them into the human body allows for long-term storage, controlled release rates, and targeted or timed release. Nanodrug carriers are solid particles ranging in size from 10 to 500 nm, composed of natural or artificial materials. The "Nanoporous Drug Delivery System 21 (DDS)" has been used for drug delivery in the human body, overcoming the limitations of traditional drugs and enabling the precise delivery of anticancer drugs.

[0024] This nanoporous drug carrier is now used on plastic products and filled with rodent repellent. Due to the extremely strong physical adsorption properties (surface charge -3.05) and ion exchange properties of the nanoporous structure drug carrier, the rodent repellent is firmly absorbed, thereby effectively retaining the rodent repellent in the plastic product for a long time without migration or evaporation. When a mouse bites the plastic product, it will escape after biting the rodent repellent and will not bite the plastic product, thus providing good protection for the plastic product.

[0025] The nanoporous drug carrier is one of the following materials: diatom mineral, zeolite, pumice, graphene gel, carbon xerogel, nano polymer sponge, xerogel, and aerogel.

[0026] In this design, the nanoporous drug carrier 21 utilizes diatom minerals 100. Artificial nanoporous drug carriers 21 are expensive to manufacture, so natural diatom minerals 100 are being used instead. Diatoms are single-celled algae, and their porous structure fulfills the function of a "nanoporous drug carrier 21." Nanodiatom minerals 100 have been shown to replace artificial DDS, such as insulin-producing pH-catalyzing diatom DDS and anti-cancer photocatalytic TiO2 diatom DDS. Purified diatom minerals 100 exhibit consistent size, dimensions, and surface physical and chemical properties, which are currently difficult to achieve with artificial DDS nanoparticles.

[0027] As the size of a material decreases, the specific surface area of ​​the particle increases rapidly. When the particle size reaches the nanometer scale, a significant proportion of the atoms are located on the surface, resulting in a very high surface energy. As the particle size of a nanomaterial decreases, the number of surface atoms increases rapidly. For example, when the particle size is 10 nm, the number of surface atoms is 20% of the total number of atoms in the entire grain; at a particle size of 1 nm, this percentage increases to 99%, meaning that almost all of the approximately 30 atoms that make up the nanoparticle are located on the surface. Because surface atoms lack neighboring atoms, they have many dangling bonds, resulting in unsaturation and easy stabilization by combining with other atoms, resulting in high chemical activity. The shells of diatoms have numerous, orderly arranged micropores, giving them a large specific surface area (60 m² / g). Numerous silanol groups are distributed on the surface of the shell and within the pores. These silanol groups release H+ (surface charge -3.05), which firmly binds to the rodent repellent.

[0028] A hard protective layer 3 is provided outside the rodent-proof layer 2. A number of ceramic hollow particles 31 are provided on the hard protective layer 3 to increase the hardness of the plastic product so that rodents do not like to bite it, thereby further achieving a protective effect.

[0029] The ceramic hollow particles 31 can be selected from the following materials: silicon dioxide, zirconium dioxide, aluminum dioxide, titanium dioxide, hafnium dioxide, niobium dioxide, silicon carbide, zirconium carbide, aluminum carbide, titanium carbide, hafnium carbide, niobium carbide, silicon nitride, silicon carbide, oxide ceramics: MgO, Al3O2, SiO2, ZrO2, mullite, etc.; non-oxide ceramics: Si3N4, SiC, etc.

[0030] like Figure 3-4 The diagram below schematically illustrates the structure of diatom mineral 100. Diatom mineral 100 is a nanoscale porous ceramic material with dimensions ranging from 100 nm to 300 nm. Its pores 101 (approximately 2 nm to 5 nm in diameter) are regularly and evenly arranged. Calcination and acid leaching are the optimal processes for diatomite purification. This method effectively clears the micropores within the diatoms, achieving a SiO2 content exceeding 90%. The calcination and acid leaching process involves acid washing the diatom mud, calcining it at 800°C, cooling it, treating it with acid, diluting it, filtering it, washing it, and drying it.

[0031] The following are the steps for incorporating the rodent repellent into the diatom mineral 100:

[0032] 1) Soak the diatom mud in boiling 10% to 15% hydrochloric acid for 8 hours;

[0033] 2) washing / filtering with ammonium hydroxide 5 times;

[0034] 3) slowly heating the mixture to 800°C in an oven at a heating rate of 3°C / min for 6 hours, followed by air separation, to obtain a diatom mineral 100 (hollow shell) with 90% SiC2 and a surface area of ​​48.47 m2 / g;

[0035] 4) Place the diatom mineral 100 (hollow shell) into a vacuum tank and evacuate for 30 minutes;

[0036] 5) Stop vacuuming and inject the rodent repellent into the vacuum tank;

[0037] 6) Pressurize the vacuum tank to 3 atmospheres for 20 minutes, heat to 37°C, and use high pressure to fully fill the diatom cavities with the rodent repellent 7; Figure 5-6 This is a comparison picture before and after injection of the medicine.

[0038] 7) Decompress the vacuum tank, take out the diatom mineral 100 filled with rodent repellent, and heat it at 80°C for 3 hours to dry the rodent repellent into a base that remains in the diatom cavity 7. The diatom mineral 100 is then coated with liposomes to form nanovesicles.

[0039] 8) The nanovesicles containing rat repellent alkaloid are put into the cable pultrusion molding, and the nanovesicles prevent the migration / evaporation / water dissolution of the drug, and permanently and effectively retain the drug in the outer sheath 11 of the cable.

[0040] If the rodent-proof layer is a rodent-proof coating layer, the processing steps (1) to (7) are the same as above. In step (8), the nanocapsules containing rodent-repellent base are added to the coating and stirred evenly, and then the coating is coated on the plastic body layer.

[0041] Diatomite is a siliceous biogenic sedimentary rock with opal as its primary mineral component. It is primarily composed of the remains of diatoms, formed from the deposited cell walls of diatoms. Diatoms are algae in the phylum Bacillariophyta, typically single-celled. Their cell walls contain pectin and silica, are hard, and consist of two nested lobes with patterns arranged radially (for the order Radiata) or bilaterally (for the order Pennates). After the diatoms die, the remaining cell walls are deposited to form diatomite. "Diatom mineral 100" is the shell wall 103 left behind by dead algae in oceans or freshwater lakes. Diatom mineral 100 is a nanoscale porous material ranging in size from 100 to 300 nm and exhibiting a variety of shapes. The shell wall 103 supports its cavity 102, with a cavity-to-volume ratio as high as 79.3%. Diatom mineral 100 is a unique electromagnetic metamaterial, possessing magnetic polarization properties not found in natural media or conventional materials. It is porous and has a large specific surface area. The diatom shell wall 103, with its numerous unsaturated residual bonds and hydroxyl groups in various bond states, is highly reactive. Optically, it exhibits high reflectivity for both ultraviolet and visible light. Its UV resistance can slow the aging of the resin in the cable jacket 11. The agent enters cavity 102 through pores 101. Once inside, it is difficult to expel due to surface effects (surface charge -3.05). The diatom shell wall 103 prevents migration, evaporation, and water dissolution. Soaking the diatom shell in ammonia or pyridine produces an oxidation reaction, causing the shell to expand to accommodate more oxygen atoms, shrinking or sealing the pores and effectively retaining the agent permanently within cavity 102. Once diatom mineral 100 is bitten by a rodent, the rat repellent alkali or "water-reactive substance" enters the saliva of the rodent's mouth, immediately producing a strong irritating smell, or a hissing sound, or luminous fragments running around in the mouth, or heat in the mouth, or gas explosion in the mouth, red saliva, etc., forming a huge deterrent (but will not cause death), causing the rodent to immediately give up biting and chewing.

[0042] Example 2: The difference from Example 1 is that the plastic body layer 1 is a battery box for new energy vehicles, and the rodent-proof layer 2 is used to protect the battery box to prevent mice from biting the battery box, thereby avoiding safety hazards.

[0043] Example 3: The difference from Example 1 is that the plastic body layer 1 is a hydrogen storage tank for new energy vehicles, and the rodent-proof layer 2 is used to protect the hydrogen storage tank to prevent rats from biting the hydrogen storage tank, thereby avoiding safety hazards.

[0044] The above description does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A rodent-proof plastic product comprising a plastic body layer, characterized in that: The invention also includes a rodent-proof layer arranged on the outer surface of the plastic body layer; the rodent-proof layer is a plastic rodent-proof layer or a paint rodent-proof layer; the rodent-proof layer has a plurality of nanoporous drug carriers; the nanoporous drug carriers are selected from diatom minerals; a rodent repellent is arranged inside the nanoporous drug carrier; the nanoporous drug carrier with the rodent repellent inside is prepared by the following method: 1) soaking the diatom mud in boiling 10% to 15% hydrochloric acid for 8 hours; 2) washing / filtering with ammonium hydroxide 5 times; 3) slowly heating to 800°C in an oven at a heating rate of 3°C / minute, baking for 6 hours, and air-selecting to obtain 90% Complete SiC2 diatom minerals have a surface area of ​​48.47 m2 / g; 4) Place the diatom minerals in a vacuum tank and evacuate for 30 minutes; 5) Stop evacuating and inject rodent repellent into the tank; 6) Pressurize the tank to 3 atmospheres for 20 minutes, heat to 37°C, and use high pressure to fully fill the diatom cavities with the rodent repellent; 7) Depressurize the tank, remove the diatom minerals filled with rodent repellent, and heat to 80°C for 3 hours to dry the rodent repellent into an alkali that remains in the diatom cavities; the diatom minerals are then coated with liposomes to form nanovesicles; 8) The nanovesicles containing the rodent repellent alkali are put into cable pultrusion.

2. The rodent-proof plastic product according to claim 1, characterized in that: A hard protective layer is also provided on the outer side of the rat-proof layer.

3. The rodent-proof plastic product according to claim 2, characterized in that: A plurality of ceramic hollow particles are arranged on the hard protective layer.

4. The rodent-proof plastic product according to claim 1, characterized in that: The plastic body layer is the outer covering of the cable.

5. The rodent-proof plastic product according to claim 1, characterized in that: The plastic body layer is a battery box for new energy vehicles.

6. The rodent-proof plastic product according to claim 1, characterized in that: The plastic body layer is a hydrogen storage tank for new energy vehicles.

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