TWI731491B - Low odor anti-rodent and anti-termite cable - Google Patents

Abstract

A low odor anti-rodent and anti-termite cable includes at least one core cable and a cover layer covering the at least one core cable. The cover layer contains 0.1-5 wt % of a pest repellent that includes a peppery ingredient and a bitter ingredient. Therefore, the 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

Low-odor anti-rodent and ant cable

The present invention relates to a cable structure, in particular to a low-odor rodent 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 a hard plastic coating layer and a metal shielding layer will increase the weight of the cable, as well as increase the manufacturing cost and complexity.

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 low-odor rodent and ant-proof cable suitable for outdoor use and capable of ensuring safe and stable power transmission in view of the deficiencies of the prior art.

In order to solve the above technical problems, one of the technical solutions adopted by the present invention is to provide a low-odor rodent-proof cable, which includes at least one cable core and a coating layer covering at least one of the cable cores, which is characterized by The coating layer contains 0.1 wt% to 5 wt% of a pest repellent, and the pest repellent contains a spicy component and a bitter component.

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.

In an embodiment of the present invention, the spicy ingredient is present in the coating layer 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 .

In an embodiment of the present invention, the pest repellent further includes a porous polymer carrier for carrying the spicy component and the bitter component.

In an embodiment of the present invention, 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 Ethylene (HDPE) or any combination of them.

In an embodiment of the present invention, the pest repellent further includes 0.5 wt% to 5 wt% of an anti-insect ingredient, and the anti-insect ingredient is pyrethrum.

In an embodiment of the present invention, the pest repellent further includes a cooling ingredient of 0.5 wt% to 5 wt%, and the cooling ingredient is menthol or a derivative thereof.

In an embodiment of the present invention, the low-odor rodent-proof cable further includes an outer covering layer, and the outer covering layer is disposed on the outer surface of the covering layer.

One of the beneficial effects of the present invention is that the low-odor rodent-proof cable of the present invention can pass through the coating layer containing 0.1 wt% to 5 wt% of pest repellent, and the pest repellent contains spicy ingredients. And the technical characteristics of "bitter components" to produce multiple sensory stimuli (such as smell, taste, pain and heat stimulation) to harmful organisms such as mice and termites, making them feel uncomfortable and abandoning the corrosion of cables, and improving the environment of cables Tolerance. Therefore, it is possible to extend the service life of the cable and ensure a safe and stable power supply. In addition, the low-odor rodent and ant-proof cable of the present invention is flexible and convenient in use, and the pest repellent has the characteristics of non-irritating to humans and ecologically friendly.

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 cables are used outdoors, they are often bitten by harmful organisms such as rats and termites. Once the insulation coating of the cable is bitten through, it will cause sudden power outages and may even cause major safety accidents. 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 low-odor anti-rodent and ant cable, which can achieve the effect of repelling harmful organisms in a way that makes mice, termites and other harmful organisms feel uncomfortable under the condition of being ecologically friendly, and thereby effectively protects the insulating coating. It is destroyed and has a strong environmental tolerance.

The following are specific examples to illustrate the implementation of the "low-odor anti-rat and ant 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 FIG. 1 and in conjunction with FIG. 2, the low-odor anti-rat and ant cable Z of the first 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; the coating layer 2 Contains pest repellent, which can repel pests in a way that makes mice and termites feel uncomfortable.

In this embodiment, according to different uses, the low-odor rodent-proof cable Z may include only one cable core 1, as shown in FIG. 1, or may include three or more cable cores 1, as shown in FIG. When the number of cable cores 1 is three or more, there may be fillers 3 (such as various forms of polyethylene, polypropylene, and polyvinyl chloride recycled materials) between the cable core 1 and the coating layer 2 to keep the cable Structural integrity. Furthermore, the cable core 1 includes a conductor 11 and an insulating layer 12 covering the conductor 11; the conductor 11 may be a plurality of wires with the same diameter (such as copper wires) formed by concentric stranding or bundle stranding. The insulating layer 12 can be 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.

The material of the coating layer 2 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 component and a bitter component. In practical applications, the coating layer 2 can be formed by extrusion molding with a plastic masterbatch mixed with a pest repellent; the plastic masterbatch can be polyvinyl chloride (PVC), polyolefin (polyolefin) such as low density Polyethylene (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 Vegetarian. 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 can be present in the coating layer 2 in the form of microcapsules, that is, the coating layer 2 has a plurality of uniformly distributed capsaicin microcapsules; as the material of the microcapsules, there can be mentioned polycapsules. Vinyl chloride, polyolefins such as polyethylene and ethylene-co-vinyl acetate (EVA). Thereby, it is possible to prevent capsaicin from migrating to the surface of the coating layer 2 to precipitate, and being entrained by moisture out of the coating layer 2 to ensure the use effect of capsaicin.

In actual application, as shown in Figure 3, the pest repellent 4 also includes a porous polymer carrier 41 for carrying the spicy component 42 and the bitter component 43; and in the presence of the porous polymer carrier 41 The long-term use effect of the spicy component 42 and the bitter component 43 is better, that is, the porous polymer carrier 41 can absorb the effective components including the spicy component 42 and the bitter component 43, so that it can be kept in the coating layer 2 and will not escape to the outside world. , And has water and gas barrier effects to prevent the active ingredients from being oxidized, and also greatly reduces the probability of being decomposed by light. The material of the porous polymer carrier 41 can be ethylene-vinyl acetate copolymer, linear low density polyethylene (LLDPE), low density polyethylene (low density polyethylene, LDPE), high density polyethylene (high density polyethylene). Density polyethylene, HDPE) or any combination thereof, and can be formed by foam molding. According to actual needs, the pest repellent 4 may include a coating layer 44 covering the porous polymer carrier 41 to facilitate long-term storage of the pest repellent 4; the material of the coating layer 44 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 gnawed by termites, it will come into contact with the insect repellent component and be poisoned to death; the total weight of the pest repellent is calculated as 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 inner covering layer 2 through the porous polymer carrier, or directly added to the inner covering layer 2. In the raw materials.

In some embodiments, the pest repellent may include a cooling ingredient to enhance the use effect of capsaicin, that is, the cooling effect produced by the cooling ingredient 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 ingredient may be 0.5 wt% to 5 wt%, and preferably 1 wt% to 3 wt%. The cooling ingredient may be menthol or its derivatives; as menthol derivatives, there may be mentioned: menthyl lactate, menthone-glycerol ketal, 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 applications, the cooling components can be loaded on the porous polymer carrier together with the spicy and bitter components, and distributed evenly in the inner cover layer 2 through the porous polymer carrier, or directly added to the raw material of the inner cover layer 2 in.

[Second Embodiment]

Referring to Figures 4 and 5, the low-odor rodent-proof cable Z according to the second embodiment of the present invention includes at least one cable core 1, a covering layer 2 and a first multifunctional protective layer 5, wherein the covering layer 2 covers the cable The core 1 and the first multifunctional protective layer 5 are arranged on the outer surface 21 of the covering layer 2. When in use, the covering layer 2 contains a pest repellent, which mainly contains a spicy component and a bitter component, so it can achieve the effect of repelling pests in a way that makes mice, termites and other pests feel uncomfortable; first; The multifunctional protective layer 22 contains organic polysilazane, so it has good water and gas resistance, high temperature resistance, chemical corrosion resistance, abrasion resistance and weather resistance. It can improve the resistance of the cable to the outdoor environment, that is, improve the cable Adaptability to the outdoor environment. According to actual needs, the low-odor anti-rodent and ant cable Z can further include a second multifunctional protective layer 6 arranged on the inner surface 22 of the covering layer 2, which also contains organopolysilazane, thereby helping to improve the cable Tolerance to outdoor environments. The technical features and implementation of the cable core 1 and the covering layer 2 have been described in the first embodiment, so they will not be repeated here.

Furthermore, the first and second multifunctional protective layers 5, 6 can have the same composition, wherein the content of the organopolysilazane can be 1 to 40% by weight; the first and second multifunctional protective layers 5, 6 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 5 and 6 is less than 0.005 mm, the above-mentioned protective effect is not obvious. The thickness of the second multifunctional protective layer 5, 6 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 terms of cost, processability and protection capability, the first and second multifunctional protective layers 5, 6 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 multifunctional protective layer 22 and are not intended to limit the present invention. In some embodiments, the first and second multifunctional protective layers 22, 23 may have different compositions.

[Third Embodiment]

Referring to Figure 6, the low-odor rodent-proof cable Z of the third embodiment of the present invention includes at least one cable core 1, a coating layer 2 and an outer coating layer 7, wherein the coating layer 2 covers the cable core 1, and the outer The covering layer 7 is provided on the outer surface 21 of the covering layer 2. When used, the covering layer 2 contains a pest repellent, which mainly contains a spicy component and a bitter component, so it can achieve the effect of repelling pests in a way that makes mice, termites and other pests feel uncomfortable; Layer 7 can improve the reliability of the cable. The technical features and implementation of the cable core 1 and the covering layer 2 have been described in the previous embodiments, so they will not be repeated here.

In this embodiment, the material of the outer covering layer 7 can be plastic, rubber or thermoplastic elastomer, and can be formed by extrusion molding; preferably, the water absorption capacity of the covering layer 2 is higher than that of the outer covering layer 7. In some embodiments, the outer covering layer 7 may be polyvinyl chloride (PVC), polyolefins such as low density polyethylene (LDPE) and medium density polyethylene, thermoplastic polyurethane (TPU), ethylene propylene rubber (EPR) ) Or chloroprene rubber (CR).

[Beneficial effects of the embodiment]

One of the beneficial effects of the present invention is that the low-odor rodent-proof cable of the present invention can pass through the coating layer containing 0.1 wt% to 5 wt% of pest repellent, and the pest repellent contains spicy ingredients. And the technical characteristics of "bitter components" to produce multiple sensory stimuli (such as smell, taste, pain and heat stimulation) to harmful organisms such as mice and termites, making them feel uncomfortable and abandoning the corrosion of cables, and improving the environment of cables Tolerance. Therefore, it is possible to extend the service life of the cable and ensure a safe and stable power supply. In addition, the low-odor rodent and ant-proof cable of the present invention is flexible and convenient in use, and the pest repellent has the characteristics of non-irritating to humans and ecologically friendly.

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.

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: Low-odor anti-rodent and ant cable 1: Cable core 11: Conductor 12: Insulation layer 2: Coating layer 21: Outer surface 22: inner surface 3: Filling 4: Pest repellent 41: Porous polymer carrier 42: spicy ingredients 43: Bitter components 44: Coating layer 5: The first multifunctional protective layer 6: The second multifunctional protective layer 7: Outer cover

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

Fig. 2 is another structural diagram of the low-odor anti-rodent and ant cable according to the first embodiment of the present invention.

Fig. 3 is a partial plan view of a pest repellent according to an embodiment of the present invention.

4 is a schematic diagram of one structure of the low-odor anti-rodent and ant cable according to the second embodiment of the present invention.

Fig. 5 is another structural schematic diagram of the low-odor rodent-proof cable according to the second embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a low-odor anti-rodent and ant cable according to a third embodiment of the present invention.

Z: Low-odor anti-rodent and ant cable 1: Cable core 11: Conductor 12: Insulation layer 2: Coating layer

Claims (10)

A low-odor rodent and ant-proof cable comprising at least one cable core, a coating layer covering at least one of the cable cores, and a multifunctional protective layer, wherein the coating layer contains 0.1wt% to 5wt% A pest repellent, and the pest repellent includes a spicy component and a bitter component; wherein the multifunctional protective layer is disposed on the outer surface of the coating layer, and the multifunctional protective The layer contains organopolysilazane. The low-odor rodent-proof cable as described in item 1 of the scope of patent application, wherein, based on the total weight of the pest repellent being 100wt%, the content of the spicy component is 10wt% to 20wt%, and The content of the bitter component is 10wt% to 50wt%. The low-odor anti-mouse and ant cable according to item 2 of the scope of patent application, wherein the spicy component is capsaicin, and the bitter component is denatonium benzoate. The low-odor anti-mouse and ant cable according to item 3 of the scope of patent application, wherein the spicy component is present in the coating layer in the form of microcapsules. The low-odor anti-mouse and ant cable according to item 2 of the scope of patent application, wherein the spicy ingredient contains 10wt% to 30wt% of capsaicin and dihydrocapsaicin and 70wt% to 90wt% of N -Vanillamide pelargonate. The low-odor rodent and ant-proof cable according to the first item of the patent application, wherein the pest repellent further comprises a porous polymer carrier for carrying the spicy component and the bitter component. As described in item 6 of the scope of patent application, 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 combination thereof. The low-odor rodent-proof cable according to item 1 of the scope of patent application, wherein the pest repellent further contains 0.5wt% to 5wt% of an insect-proof component, and the insect-proof component is pyrethrum fine. The low-odor rodent-proof cable according to the first item of the patent application, wherein the pest repellent further contains a cooling component of 0.5wt% to 5wt%, and the cooling component is menthol or its derivatives Things. The low-odor anti-rodent and ant cable as described in item 1 of the scope of patent application further includes an outer covering layer, and the outer covering layer is arranged on the outer surface of the multifunctional protective layer.

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