TW202125536A - Hybrid anti-rodent and anti-termite cable - Google Patents

Abstract

A hybrid anti-rodent and anti-termite cable includes at least one core cable and sheath layer. The sheath layer mainly includes a first cover layer and a second cover layer. The first cover layer is a rigid plastic layer having a Shore D hardness greater than 60, a metal layer or a metal-reinforced rigid plastic layer. The second cover layer is disposed inside or outside the first cover layer. The second cover layer contains 0.1-5 wt % of a pest repellent that includes a peppering ingredient and a bittering ingredient. In use, the first cover layer has high physical strength for preventing from being bitten by pests such as rats and termites. The second cover layer can produce multisensory stimulation on pests such as rats and termites so as to cause them to feel uncomfortable and stop biting the cable. Therefore, the service life of the cable can be extended.

Description

Compound rodent-proof cable

The invention relates to a cable structure, in particular to a composite rodent-proof and ant-proof cable. Its application range includes at least medium and high voltage cables, robot cables, electric vehicle cables and land cables for wind power generation systems.

The existing power cables mainly include a cable core and a coating layer covering the cable core. The coating layer is generally formed of plastic, rubber or thermoplastic elastomer, which is difficult to resist the bite of rodents (such as mice) and termites. For power cables set outdoors (such as buried in the ground), the coating layer is more likely to be damaged by rodents and termites. Once the coating layer is damaged, the inner cable core will be exposed directly; in this way, it is easy A short-circuit accident occurs, resulting in a sudden power outage, which may cause major safety accidents and economic losses in severe cases.

In order to prevent the cable coating from being damaged by gnawing, a common protective measure is to use a high-hardness plastic coating, or use a high-hardness plastic coating and a metal shielding layer (such as a cladding layer or an armor layer) to form a coating layer. It has high physical strength and can resist the gnawing of harmful organisms such as mice and termites. However, the use of high-hardness plastic coating and metal shielding layer will not only increase the weight of the cable, but also increase manufacturing costs and complexity; in addition, the impact of high-hardness plastic coating and metal shielding on the outdoor environment such as high temperature, humidity, Ultraviolet light, acid rain erosion, dust friction, etc., cannot play an effective protective role, and these effects will reduce the service life of the cable.

Another common protective measure is to add repellents and/or insecticides to the coating layer or coat it on the surface of the coating layer, so that the coating layer has a taste, odor, or odor that is unpleasant or afraid of pests such as mice and termites. Other characteristics (such as viscosity). However, when this type of cable is used in an outdoor environment, repellents and pesticides are likely to migrate to the surface of the coating layer and precipitate, posing a threat to the ecological environment.

Therefore, how to solve the problems existing in the existing cable structure to complete a cable with both long-term use and anti-rodent and ant functions is actually one of the focuses of attention by those skilled in the art.

The technical problem to be solved by the present invention is to provide a composite rodent-proof cable combining physical and chemical protective measures against the deficiencies of the prior art, which is suitable for outdoor use and can ensure safe and stable power transmission.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a composite rodent-proof and ant-proof cable, which includes at least one cable core and a coating layer covering at least one of the cable cores. The covering layer includes a first covering layer and a second covering layer. The first covering layer is a hard plastic layer with a hardness (Shore D) greater than 60, a metal layer, or a metal-reinforced hard plastic layer. The two covering layers are arranged inside or outside the first covering layer, and the second covering layer contains 0.1 wt% to 5 wt% of a pest repellent, which contains a spicy ingredient and a bitter ingredient.

In an embodiment of the present invention, the first covering layer is a rigid plastic layer, which is medium density polyethylene (medium density polyethylene), high hardness special polyolefin copolymer (Termigon), nylon or semi-rigid polyvinyl chloride Formed.

In an embodiment of the present invention, the first covering layer is a metal layer, which is formed by wrapping a metal tape; wherein, the metal tape has a thickness ranging from 400 N/mm ² to 800 N/mm ² Between the tensile strength (tensile strength) and the hardness (HV) between 100 to 240.

In an embodiment of the present invention, the first covering layer is a metal-reinforced hard plastic layer, which is a combination of a hard plastic layer and a metal layer; wherein, the hard plastic layer is medium density polyethylene ( medium density polyethylene), high-hardness special polyolefin copolymer (Termigon), nylon or semi-rigid polyvinyl chloride; wherein, the metal layer is formed by wrapping a metal belt, and the metal belt has a thickness of between 400 Tensile strength between N/mm ² and 800 N/mm ² and hardness (HV) between 100 and 240.

In an embodiment of the present invention, based on the total weight of the pest repellent being 100 wt%, the content of the spicy component is 10 wt% to 20 wt%, and the content of the bitter component is 10 wt% to 50 wt%.

In an embodiment of the present invention, the spicy ingredient is capsaicin, and the bitter ingredient is denatonium benzoate; wherein, the spicy ingredient is in the form of microcapsules.

In an embodiment of the present invention, the spicy ingredient contains 10 wt% to 30 wt% of one of capsaicin and dihydrocapsaicin, and 70 wt% to 90 wt% of N-nonanoic acid vanillamide , And the bitter component is denatonium benzoate; wherein, the spicy component exists in the form of microcapsules.

In an embodiment of the present invention, the pest repellent further comprises a porous polymer carrier for carrying the spicy component and the bitter component; wherein the porous polymer carrier The material is ethylene-vinyl acetate copolymer (EVA), linear low density polyethylene (LLDPE), low density polyethylene (LDPE), high density polyethylene (HDPE) or any combination thereof.

In an embodiment of the present invention, the composite rodent-proof and ant-proof cable further includes a multifunctional protective layer, which is arranged on a surface of the first covering layer or the second covering layer and contains 1 wt% To 40 wt% of organopolysilazane.

In an embodiment of the present invention, the multifunctional protective layer further contains 35 wt% to 79 wt% of base resin, 5 wt% to 10 wt% of Teflon, 5 wt% to 10 wt% % Of talc and 5 wt% to 10 wt% of silicon dioxide, the base resin is acrylic resin, epoxy resin, or a combination thereof.

One of the beneficial effects of the present invention is that the composite rodent-proof and ant-proof cable of the present invention can pass through "the first covering layer is a hard plastic layer with a hardness (Shore D) greater than 60, a metal layer or a metal-reinforced hard plastic layer" And the technical feature of "the second covering layer contains 0.1 wt% to 5 wt% of a pest repellent, which contains a spicy ingredient and a bitter ingredient" to effectively resist the gnawing damage of harmful organisms such as mice and termites , And produce multiple sensory stimuli to harmful organisms (such as smell, taste, pain and heat stimulation), making them feel uncomfortable and abandon biting on the cable. Therefore, it is possible to extend the service life of the cable and ensure a safe and stable power supply.

In order to further understand the features and technical content of the present invention, please refer to the following detailed description and drawings about the present invention. However, the provided drawings are only for reference and description, and are not used to limit the present invention.

When the cable is used outdoors, it is often bitten by harmful organisms such as rats and termites. Once the cable insulation is damaged, it may cause a sudden power outage, and may even cause a major safety accident. In addition, environmental impacts such as high temperature, humidity, ultraviolet light exposure, acid rain erosion, and dust friction will reduce the service life of the cable. Therefore, the present invention provides a composite rodent-proof cable, which combines physical and chemical protection measures, and directly produces technical effects including: it can effectively resist the gnawing damage of harmful organisms such as mice and termites, and it can make harmful organisms feel It can be avoided by discomfort, and has a strong environmental tolerance.

The following are specific examples to illustrate the implementation of the "composite rodent-proof cable" disclosed in the present invention. Those skilled in the art can understand the advantages and effects of the present invention from the content disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and various details in this specification can also be based on different viewpoints and applications, and various modifications and changes can be made without departing from the concept of the present invention. In addition, the drawings of the present invention are merely schematic illustrations, and are not drawn according to actual dimensions, and are stated in advance. The following embodiments will further describe the related technical content of the present invention in detail, but the disclosed content is not intended to limit the protection scope of the present invention.

It should be understood that although terms such as "first", "second", and "third" may be used herein to describe various elements or signals, these elements or signals should not be limited by these terms. These terms are mainly used to distinguish one element from another, or one signal from another signal. In addition, the term "or" used in this document may include any one or a combination of more of the associated listed items depending on the actual situation.

[First Embodiment]

Referring to Figures 1 and 2, and in conjunction with Figures 3 and 4, the composite rodent-proof cable Z according to the first embodiment of the present invention includes at least one cable core 1 for transmitting electrical signals and a covering cable core 1 Covering layer 2. The covering layer 2 includes a first covering layer 21 and a second covering layer 22, which are laminated together; the first covering layer 21 has high hardness and can effectively resist the gnawing damage of harmful organisms such as mice, termites, etc. The second covering layer 22 contains a pest repellent, which can produce multiple sensory stimuli to pests such as mice and termites, making it uncomfortable and disgusting to eat cables. When in use, the second covering layer 22 can be arranged on the outside of the first covering layer 21, as shown in FIG. 1, or the second covering layer 22 may be arranged on the inside of the first covering layer 21, as shown in FIG.

The cable core 1 includes a conductor 11 and an insulating layer 12 covering the conductor 11; the conductor 11 can be multiple wires with the same diameter (such as copper wires) formed by concentric stranding or bundle stranding, and the insulating layer 12 can be It is formed by extrusion molding using an insulating material. However, these details are only for describing possible embodiments of the cable core 1 and are not intended to limit the present invention. Although only one cable core 1 is shown in Figure 1 and Figure 2, the number of cable cores 1 can also be multiple (such as three or more) according to different uses; when the number of cable cores 1 is multiple There may be fillers (such as various forms of polyethylene, polypropylene, and polyvinyl chloride recycled materials) between the cable core 1 and the covering layer 2 to maintain the structural integrity of the cable.

In this embodiment, the hardness (Shore D) of the first covering layer 21 is greater than 60, preferably greater than 63, and more preferably greater than 65; the thickness of the first covering layer 21 may be 0.5 mm to 15 mm. Further, the first covering layer 21 may be a hard plastic layer, which may be formed by extrusion molding; in terms of physical properties, processability and environmental protection, the hard plastic layer is preferably medium density polyethylene (medium density polyethylene, MDPE), high-hardness special polyolefin copolymer (Termigon), nylon (such as nylon 6 and nylon 12) or semi-rigid polyvinyl chloride.

In addition, the first covering layer 21 may also be a metal layer. Furthermore, the metal layer is in the form of a cladding layer, that is, it is formed by spirally winding at least one metal tape (not shown), but it is not limited to this; the metal tape may have a range of 400 N/mm ² to 800 N / mm tensile strength between ² (tensile strength), preferably between 400 N / mm ² to 500 N / mm ² range, and a hardness (HV) of between 100 to 240, preferably via Between 100 and 200; as the metal strip forming the metal layer, brass strips (or copper-zinc alloy strips), zinc-copper alloy strips, and steel strips can be cited.

In addition, the first covering layer 21 can also be a metal-reinforced hard plastic layer. Furthermore, as shown in FIGS. 3 and 4, the metal-reinforced hard plastic layer is a combination of a hard plastic layer 21a and a metal layer 21b, but it is not limited to this; the technology of the hard plastic layer 21a and the metal layer 21b The features and implementation methods have been described in the previous paragraphs, so they will not be repeated here. In practical applications, the position of the hard plastic layer 21a can be closer to the cable core 1 than the position of the metal layer 21b, that is, the hard plastic layer 21a is arranged on the inner side of the metal layer 21b, as shown in FIG. 3, or the position of the metal layer 21b can be The position of the hard plastic layer 21a is closer to the cable core 1, that is, the hard plastic layer 21a is disposed on the outside of the metal layer 21b, as shown in FIG. 4. In some embodiments, the metal-reinforced hard plastic layer 21a may be a hard plastic layer containing a metal-reinforced material (such as a metal wire).

The material of the second covering layer 22 can be plastic, rubber or thermoplastic elastomer, wherein the content of the pest repellent can be 0.1 wt% to 5 wt%, and the pest repellent mainly contains a spicy ingredient and a bitter taste Element. In practical applications, the second covering layer 22 can be formed by extrusion molding using a plastic masterbatch mixed with a pest repellent; the plastic masterbatch can be polyvinyl chloride (PVC), polyolefin, such as Low density polyethylene (LDPE) and medium density polyethylene, thermoplastic polyurethane (TPU), ethylene propylene rubber (EPR) or neoprene (CR) are formed. In some embodiments, the content of the pest repellent may be 0.5 wt%, 1 wt%, 1.5 wt%, 2 wt%, 2.5 wt%, 3 wt%, 3.5 wt%, 4 wt%, or 4.5 wt% .

Furthermore, spicy and bitter components can stimulate the senses, such as bioreceptor receptors, nerve conduction system, etc. The pungent ingredient may be a natural ingredient, such as capsaicin and its analogs, and is preferably capsaicin; examples of the capsaicin analogs include dihydrocapsaicin, nordihydrocapsaicin, homodihydrocapsaicin, and capsaicin White. The spicy ingredient can also be obtained by artificial synthesis, and is preferably N-vanillylnonanamide (N-vanillylnonanamide, Nonivamide). In addition, the bitter component may be denatonium benzoate. From the perspective of use effect and long-term effectiveness, the spicy ingredient may contain 10 wt% to 30 wt% of capsaicin and dihydrocapsaicin, preferably dihydrocapsaicin, and 70 wt% to 90 wt% N-Nanoic acid vanillamide. However, the present invention is not limited to the above-mentioned examples. It is worth noting that, compared with dihydrocapsaicin, capsaicin contains double bonds in its molecular structure, which is easier to decompose by light.

In this embodiment, based on the total weight of the pest repellent being 100 wt%, the content of the spicy ingredient may be 10 wt% to 20 wt%, such as 11 wt%, 12 wt%, 13 wt%, 14 wt%, 15 wt%, 16 wt%, 17 wt%, 18 wt% or 19 wt%; the content of bitter components can be 10 wt% to 50 wt%, such as 15 wt%, 20 wt%, 25 wt%, 30 wt%, 35 wt%, 40 wt% or 45 wt%. When capsaicin is used as a spicy ingredient, capsaicin may be present in the second covering layer 22 in the form of microcapsules, that is, the second covering layer 22 has a plurality of capsaicin microcapsules (not shown) evenly distributed; The material of the microcapsules may include polyvinyl chloride, polyolefins such as polyethylene, and ethylene-co-vinyl acetate (EVA). Thereby, capsaicin can be prevented from migrating to the surface of the second covering layer 22 to precipitate, and being entrained by moisture from the second covering layer 22, so as to ensure the use effect of capsaicin.

In actual application, as shown in FIG. 5, the pest repellent 3 also includes a porous polymer carrier 31 for carrying the spicy component 32 and the bitter component 33; and in the presence of the porous polymer carrier 31 The long-term use effect of the spicy component 32 and the bitter component 33 is better, that is, the porous polymer carrier 31 can absorb the active components including the spicy component 32 and the bitter component 33, so that it can be kept in the second covering layer 22 and will not escape. To the outside, it has water and gas barrier effects to prevent the active ingredients from being oxidized, and also greatly reduces the probability of the active ingredients being decomposed by light.

Furthermore, as shown in FIG. 5, the material of the porous polymer carrier 31 may be ethylene-vinyl acetate copolymer, linear low density polyethylene (LLDPE), low density polyethylene (low density polyethylene). , LDPE), high density polyethylene (HDPE) or any combination thereof, and can be formed by foam molding. According to actual needs, the pest repellent 3 may include a coating layer 34 covering the porous polymer carrier 31 to facilitate long-term storage of the pest repellent 3; the material of the coating layer 34 may be LDPE or HDPE , But not limited to this.

It is worth noting that the repellent effects of pest repellents on pests include at least: 1. Capsaicin emits a pungent odor, which prevents mice and other harmful organisms (such as termites) from approaching cables; 2. When mice and others When rodents bite cables, capsaicin can give them a burning sensation and tingling sensation, which makes them feel uncomfortable and hate to bite the cables; 3. When rats and other rodents bite cables, they will feel benzyl The strong bitterness brought by denatonium makes it uncomfortable to bite the cable. In addition, when spicy ingredients and bitter ingredients are used in combination, it can still play an effective preventive effect on some rodents with congenital perception obstacles, such as the inability to perceive bitter taste. In addition, in the presence of bitter ingredients, the amount of spicy ingredients can be reduced, so the pest repellent is not irritating to humans.

In some embodiments, the pest repellent may contain an insect repellent component. When the cable is eroded by termites, it will come into contact with the insect repellent component and be poisoned to death; based on the total weight of the pest repellent being 100 wt%, The content of the insect repellent may be 0.5 wt% to 5 wt%, and preferably 1 wt% to 3 wt%. Examples of insect control components of pest repellents include: Pyrethrum or Pyrethrin, Permethrin, Allethrin, Tetramethrin, and Dimethrin. Deltamethrin, Cymerthrin and Fenvalerate. However, the present invention is not limited to the above-mentioned examples. In practical applications, the insect-preventing ingredients can be loaded on the porous polymer carrier together with the spicy and bitter ingredients, and distributed evenly in the second covering layer 22 through the porous polymer carrier, or directly added to the second covering layer. 22 of the raw materials.

In some embodiments, the pest repellent may contain a cooling sensation component to enhance the use effect of capsaicin, that is, the cooling effect produced by the cooling sensation component has an additive effect on the burning sensation caused by capsaicin. Based on the total weight of the pest repellent being 100 wt%, the content of the cooling sensation component may be 0.5 wt% to 5 wt%, and preferably 1 wt% to 3 wt%. The cooling component may be menthol or its derivatives. Examples of menthol derivatives include: menthyl lactate, menthone-glycerol ketal, and monomethyl succinate (monomethyl succinate). ) And p-menthane-3,8-diol (p-menthane-3,8-diol). However, the present invention is not limited to the above-mentioned examples. In practical application, the cooling component can be loaded on the porous polymer carrier together with the spicy and bitter components, and distributed evenly in the second covering layer 22 through the porous polymer carrier, or directly added to the second covering layer 22 Of raw materials.

[Second Embodiment]

6 and 7, the composite rodent-proof cable Z according to the second embodiment of the present invention includes at least one cable core 1 for transmitting electrical signals and a coating layer 2 covering the cable core 1, wherein the coating layer 2 It includes a first covering layer 21, a second covering layer 22 and a first multifunctional protective layer 23, which are laminated together. When in use, the first covering layer 21 has high hardness and can effectively resist the gnawing damage of harmful organisms such as mice and termites; the second covering layer 22 is arranged on the inside or outside of the first covering layer 21, and the second covering layer 22 Contains pest repellent, which can produce multiple sensory stimuli to harmful organisms such as mice and termites, making them feel uncomfortable and abandon the corrosion of cables; the first multifunctional protective layer 23 can be arranged on the first covering layer 21 and the second covering layer 21 Between the covering layers 22, the first multifunctional protective layer 23 contains organopolysilazane, so it has good water and gas resistance, high temperature resistance, chemical corrosion resistance, abrasion resistance and weather resistance, and can improve the cable's outdoor environment The endurance of the cable is to improve the adaptability of the cable to the outdoor environment.

8 and 9, according to actual needs, the composite rodent-proof cable Z may further include a second multifunctional protective layer 24 covering the first covering layer 21 and the second covering layer 22, which also contains organic poly Silazane, in turn, helps to improve the cable's resistance to outdoor environments. Furthermore, the first and second multifunctional protective layers 23, 24 can have the same composition, wherein the content of the organopolysilazane can be 1 to 40 weight percent; the first and second multifunctional protective layers 23, 24 It can be formed by impregnation or spraying, and its thickness can be 0.005 mm to 2.0 mm; if the thickness of the first and second multifunctional protective layers 23 and 24 is less than 0.005 mm, the above-mentioned protective effect is not obvious. The thickness of the second multifunctional protective layer 23, 24 exceeds 2.0 mm, which will increase the production cost.

It is worth noting that the molecular structure of organopolysilazane has Si-N-Si bonds and Si-O-Si bonds, so it has excellent protection capabilities, can prevent external moisture and gas intrusion, and endure harsh Climatic conditions, chemical corrosion and external wear. The organopolysilazane can be selected from commercially available Durazane® series products, preferably Durazane® 1500 rapid cure, but not limited thereto. In addition, in the presence of the first and second multifunctional protective layers 23, 24, the metal layer (that is, the first covering layer or a part thereof) will not be oxidized and rusted because it is difficult to contact moisture and air. Extend the service life of the cable.

In terms of cost, processability and protection capabilities, the first and second multifunctional protective layers 23, 24 may further contain 35 to 79 weight percent of base resin, 5 to 10 weight percent of fluoropolymer, and 10 to 20 weight percent. Weight percentage of inorganic filler; wherein the base resin is acrylic resin, epoxy resin or a combination thereof, the fluoropolymer is Teflon (Teflon), and the inorganic filler includes 5 to 10 weight percentage of talc and 5 to 10 weight The percentage of silicon dioxide. However, these details are only for describing possible implementations of the first and second multifunctional protective layers 23, 24 and are not intended to limit the present invention. In some embodiments, the first and second multifunctional protective layers 23, 24 may have different compositions.

[Beneficial effects of the embodiment]

One of the beneficial effects of the present invention is that the composite rodent-proof and ant-proof cable of the present invention can pass through "the first covering layer is a hard plastic layer with a hardness (Shore D) greater than 60, a metal layer or a metal-reinforced hard plastic layer" And the technical feature of "the second covering layer contains 0.1 wt% to 5 wt% of a pest repellent, which contains a spicy ingredient and a bitter ingredient" to effectively resist the gnawing damage of harmful organisms such as mice and termites , And produce multiple sensory stimuli to harmful organisms (such as smell, taste, pain and heat stimulation), making them feel uncomfortable and abandon biting on the cable. Therefore, it is possible to extend the service life of the cable and ensure a safe and stable power supply.

Furthermore, the multifunctional protective layer contains organopolysilazane, which has Si-N-Si bonds and Si-O-Si bonds in its molecular structure, so it has excellent protection capabilities and can prevent external moisture and gas from intruding. , And endure harsh weather conditions, chemical corrosion and external wear.

Furthermore, in the presence of the multifunctional protective layer, the metal layer (ie, the first covering layer or a part thereof) will not oxidize and rust because it is difficult to contact water vapor and air, which can extend the service life of the cable .

The content disclosed above is only the preferred and feasible embodiments of the present invention, and does not limit the scope of the patent application of the present invention. Therefore, all equivalent technical changes made using the description and schematic content of the present invention are included in the application of the present invention. Within the scope of the patent.

Z: Composite anti-rodent and ant cable 1: Cable core 11: Conductor 12: Insulation layer 2: Coating layer 21: The first covering layer 21a: Hard plastic layer 21b: Metal layer 22: second covering layer 23: The first multifunctional protective layer 24: The second multifunctional protective layer 3: Pest repellent 31: Porous polymer carrier 32: Spicy ingredients 33: Bitter ingredients 34: Coating layer

FIG. 1 is a schematic diagram of one structure of the composite rodent-proof and ant-proof cable according to the first embodiment of the present invention.

Fig. 2 is another structural schematic diagram of the composite rodent-proof and ant-proof cable according to the first embodiment of the present invention.

3 is a schematic diagram of a partial structure of the first covering layer of the composite rodent-proof cable according to the embodiment of the present invention.

4 is another partial structural diagram of the first covering layer of the composite rodent-proof cable according to the embodiment of the present invention.

Fig. 5 is a schematic diagram of the structure of a pest repellent according to an embodiment of the present invention.

Fig. 6 is a schematic diagram of one structure of the composite rodent-proof and ant-proof cable according to the second embodiment of the present invention.

Fig. 7 is another structural diagram of the composite rodent-proof and ant-proof cable according to the second embodiment of the present invention.

Fig. 8 is another structural schematic diagram of the composite rodent-proof and ant-proof cable according to the second embodiment of the present invention.

Fig. 9 is another structural schematic diagram of the composite rodent-proof and ant-proof cable according to the second embodiment of the present invention.

Z: Composite anti-rodent and ant cable

1: Cable core

11: Conductor

12: Insulation layer

2: Coating layer

21: The first covering layer

22: second covering layer

Claims (10)

A composite rodent-proof and ant-proof cable comprising at least one cable core and a coating layer covering at least one of the cable cores, characterized in that the coating layer includes: A first covering layer, which is a hard plastic layer, a metal layer or a metal-reinforced hard plastic layer with a hardness (Shore D) greater than 60; and A second covering layer, which is arranged on the inside or outside of the first covering layer, wherein the second covering layer contains a pest repellent of 0.1 wt% to 5 wt%, and the pest repellent The agent contains a spicy component and a bitter component. As described in the first item of the scope of patent application, the composite rodent-proof cable, wherein the first covering layer is a rigid plastic layer, which is a medium density polyethylene (medium density polyethylene), a high-hardness special polyolefin copolymer (Termigon ), nylon or semi-rigid polyvinyl chloride. The composite anti-rodent and ant cable according to item 1 of the scope of patent application, wherein the first covering layer is a metal layer, which is formed by wrapping a metal tape; wherein, the metal tape has a thickness of between 400 N/ Tensile strength between mm ² and 800 N/mm ² and hardness (HV) between 100 and 240. The composite rodent-proof cable according to item 1 of the patent application, wherein the first covering layer is a metal-reinforced hard plastic layer, which is a combination of a hard plastic layer and a metal layer; wherein, the The rigid plastic layer is formed of medium density polyethylene, high-hardness special polyolefin copolymer (Termigon), nylon or semi-rigid polyvinyl chloride; wherein, the metal layer is formed by wrapping a metal tape, And the metal belt has a ^{tensile strength between 400 N/mm 2} and 800 N/mm ² and a hardness (HV) between 100 and 240. The composite anti-rodent and ant cable according to item 1 of the scope of patent application, wherein, based on the total weight of the pest repellent being 100 wt%, the content of the spicy component is 10 wt% to 20 wt% , And the content of the bitter component is 10 wt% to 50 wt%. The composite rodent-proof cable according to item 5 of the scope of patent application, wherein the spicy component is capsaicin, and the bitter component is denatonium benzoate; wherein, the spicy component In the form of microcapsules. The composite rodent-proof cable according to item 5 of the scope of patent application, wherein the spicy ingredient contains 10 wt% to 30 wt% of one of capsaicin and dihydrocapsaicin, and 70 wt% to 90 wt % Of N-nonanoic acid vanillamide, and the bitter component is denatonium benzoate; wherein the spicy component exists in the form of microcapsules. The composite anti-rodent and ant cable according to item 1 of the scope of patent application, wherein the pest repellent further comprises a porous polymer carrier for carrying the spicy component and the bitter component; wherein The material of the porous polymer carrier is ethylene-vinyl acetate copolymer (EVA), linear low-density polyethylene (LLDPE), low-density polyethylene (LDPE), high-density polyethylene (HDPE) or any of them combination. The composite rodent-proof and ant-proof cable as described in item 1 of the scope of the patent application further includes a multifunctional protective layer, which is arranged on a surface of the first covering layer or the second covering layer and contains 1 wt % To 40 wt% of organopolysilazane. As described in item 9 of the scope of patent application, the compound anti-rodent and ant cable, wherein the multifunctional protective layer further contains 35 wt% to 79 wt% of base resin, 5 wt% to 10 wt% of Teflon ( Teflon), 5 wt% to 10 wt% talc, and 5 wt% to 10 wt% silica, and the base resin is acrylic resin, epoxy resin, or a combination thereof.

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