CN114334259B - Environment-friendly rat and termite prevention steel tape armored flame-retardant power cable - Google Patents
Environment-friendly rat and termite prevention steel tape armored flame-retardant power cable Download PDFInfo
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- CN114334259B CN114334259B CN202210087850.4A CN202210087850A CN114334259B CN 114334259 B CN114334259 B CN 114334259B CN 202210087850 A CN202210087850 A CN 202210087850A CN 114334259 B CN114334259 B CN 114334259B
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Abstract
The application relates to an environment-friendly rat and termite prevention steel tape armored flame-retardant power cable, which belongs to the technical field of cables and comprises a wire core formed by coating a crosslinked polyethylene insulating layer on the outer surface of a copper conductor, wherein 5 wire cores are in a group, a polyvinyl chloride tape wrapping inner liner layer is coated on the outer layer of one group of the wire cores, polypropylene filling ropes are arranged between the wire cores and the wire core, and between the wire cores and the polyvinyl chloride tape wrapping inner liner layer, a galvanized steel tape armor layer is coated on the outer layer of the polyvinyl chloride tape wrapping inner liner layer, and a flame-retardant polyolefin rat and termite prevention sheath is coated on the outer layer of the galvanized steel tape armor layer; the flame-retardant polyolefin rat and termite-proof sheath is prepared from a rat and termite-proof flame-retardant polyolefin material; the capsaicin is used as a basic rat and termite preventing component, the silicon dioxide is used as a carrier, the effective acting time of the capsaicin is prolonged, and the application range of the capsaicin is widened. The nitrogen-phosphorus compound is grafted to the rat and termite prevention component, so that the carbon forming amount and the density of the carbon layer are improved, and the flame retardant property of the polyolefin material is improved.
Description
Technical Field
The application belongs to the technical field of cables, and particularly relates to an environment-friendly rat and termite resistant steel tape armored flame-retardant power cable.
Background
The damage of the rat and the termite is one of the main hazards endangering the cable, and the accidents caused by the damage cause huge economic losses. The biting of the rat and the termite can cause water inflow or damp of the cable, and accidents such as power failure, serious short circuit, fire disaster and the like are caused. Termite and murine repellents can be classified into termite repellents and rodents. Commonly used ant-preventing agents are Diels, aishi, lindan, chlordane, heptachlor, etc. Examples of rodenticides include cyclophthalimide (also known as cycloheximide), a cumoid monomer, a boron compound, and a metal salt of aryl phosphate. Many repellents are forbidden due to toxicity or environmental pollution, and in the past, as a main measure for preventing biological injury of mice, a raticide mainly used for 'poisoning' is added into a plastic coating material of a cable sheath, but in the production process, the release of toxic gas not only endangers the health of workers, but also causes environmental pollution, and water, soil and space environments are polluted during use.
Disclosure of Invention
The application aims to provide an environment-friendly rat and termite resistant steel tape armored flame-retardant power cable, which solves the problems in the prior art.
The aim of the application can be achieved by the following technical scheme:
an environment-friendly rat and termite-proof steel tape armored flame-retardant power cable comprises a copper conductor, a crosslinked polyethylene insulating layer, a polypropylene filling rope, a polyvinyl chloride tape wrapping inner liner, a galvanized steel tape armored layer and a flame-retardant polyolefin rat and termite-proof sheath; the outer surface of the copper conductor is coated with a crosslinked polyethylene insulating layer to form a wire core, 5 wire cores are in a group, the outer layer of one group of wire cores is coated with a polyvinyl chloride tape wrapping inner liner, polypropylene filling ropes are arranged between the wire cores and the wire cores, and between the wire cores and the polyvinyl chloride tape wrapping inner liner, the outer layer of the polyvinyl chloride tape wrapping inner liner is coated with a galvanized steel tape armor layer, and the outer layer of the galvanized steel tape armor layer is coated with a flame-retardant polyolefin rat and termite protection sleeve; the flame-retardant polyolefin rat and termite-proof sheath is prepared from a rat and termite-proof flame-retardant polyolefin material;
the rat and termite resistant flame retardant polyolefin material is prepared by the following steps:
weighing 79-83 parts of polyolefin, 8-10 parts of flame retardant, 0.5-1 part of antioxidant and 5-10 parts of auxiliary agent according to parts by weight; and (3) uniformly stirring and mixing the weighed raw materials, then carrying out melt blending, and finally carrying out hot press molding or injection molding to obtain the rat and termite resistant flame retardant polyolefin material.
Further, the polyolefin is polypropylene; the antioxidant is phenyl tri (2, 4-di-tert-butyl) phosphite.
Further, the auxiliary agent comprises the following raw materials in parts by weight: 2-3 parts of maleic anhydride grafted polypropylene, 0.5-0.9 part of polyethylene wax and 1-2 parts of ethylene propylene diene monomer rubber.
Further, the flame retardant is prepared by the steps of:
step S11, adding triethylamine and p-hydroxybenzaldehyde into tetrahydrofuran, then adding hexachlorocyclotriphosphazene, heating and refluxing for 24 hours after the addition, and concentrating under reduced pressure to remove a solvent after the reaction is finished to obtain a nitrogen-phosphorus compound;
and step S12, adding the rat and termite prevention component into dioxane under the protection of nitrogen, then adding a nitrogen-phosphorus compound, stirring and reacting for 6 hours at the temperature of 75 ℃, and cooling, filtering and drying after the reaction is finished to obtain the flame retardant.
Further, in the step S11, the dosage mass ratio of triethylamine, p-hydroxybenzaldehyde and hexachlorocyclotriphosphazene is 7:8:3.5; tetrahydrofuran is used as a solvent and added according to actual requirements; in the step S12, the using amount mass ratio of the rat and termite prevention component to the nitrogen and phosphorus compound is 2:0.8, dioxane is used as a solvent, and the solvent is added according to actual requirements; the preparation process of the flame retardant is that nitrogen and phosphorus compounds are grafted onto the rat and termite prevention component through Schiff base reaction, and then the nitrogen and phosphorus compounds are added into the polyolefin material as the flame retardant, so that the release of hydrocarbon, CO, aromatic ring compounds and the like can be reduced, the introduction of the nitrogen and phosphorus compounds, the generation of phosphorus oxygen free radicals can combine with H.and OH.active free radicals in flame to terminate combustion reaction, and the char formation amount and the char layer density are improved, and the flame retardant performance of the polyolefin material is improved.
Further, the rat and termite resistant component is prepared by the steps of:
adding dodecyl trimethyl ammonium bromide and capsaicin into a methanol water solution, then adding a sodium hydroxide solution, then adding tetramethyl orthosilicate and 3-aminopropyl trimethoxy silane, stirring at 25 ℃ for 16h, centrifuging at 5000r/min for 10min after the reaction is finished, washing with absolute ethyl alcohol, and drying at 55 ℃ until the weight is constant after the washing is finished to obtain the rat and termite preventing component. Capsaicin is an alkaloid of vanillylamides separated from capsicum, and is prepared into microspheres by using silicon dioxide as a carrier, so that the effective acting time of the capsaicin is prolonged, and the application range of the capsaicin is widened. The silicon dioxide has a porous structure and a larger specific surface area, so that the release of combustible gas can be inhibited, and the silicon dioxide can migrate to the surface of carbon residue in the combustion process, thereby improving the high temperature resistance of the carbon layer and further improving the flame retardant effect. In addition, in the process of preparing the rat and termite resistant component, the carrier prepared by copolycondensation is prepared by utilizing tetramethyl orthosilicate and 3-aminopropyl trimethoxy silane, and amino is introduced.
Further, the volume fraction of the aqueous methanol solution was 50%; the concentration of the sodium hydroxide solution is 1mol/L; the dosage ratio of dodecyl trimethyl ammonium bromide, capsaicin, aqueous methanol solution and sodium hydroxide solution is 4g:1.2g:500g:3mL; the dosage mass ratio of the dodecyl trimethyl ammonium bromide, the tetramethyl orthosilicate and the 3-aminopropyl trimethoxy silane is 4:1.3:0.08.
The application has the beneficial effects that:
according to the application, capsaicin is used as a basic rat and termite prevention component, and can be used for strongly stimulating oral mucosa and gustatory nerves of rats and effectively preventing biting, so that serious harm caused by rapid eating and invasion of rats in the long-term use process of wires and cables such as PVC, PE plastic and the like in the area where the activities of the rats are rampant is avoided. The effective acting time of the capsaicin is prolonged and the application range is enlarged by preparing the capsaicin into microspheres and taking the silicon dioxide as a carrier. The silicon dioxide has a porous structure and a larger surface area, so that the release of combustible gas can be inhibited, and the silicon dioxide can migrate to the surface of carbon residue in the combustion process, thereby improving the high temperature resistance of the carbon layer and further improving the flame retardant effect.
The preparation process of the flame retardant is that nitrogen and phosphorus compounds are grafted onto the rat and termite prevention component through Schiff base reaction, and then the nitrogen and phosphorus compounds are added into the polyolefin material as the flame retardant, so that the release of hydrocarbon, CO, aromatic ring compounds and the like can be reduced, the introduction of the nitrogen and phosphorus compounds, the generation of phosphorus oxygen free radicals can combine with H.and OH.active free radicals in flame to terminate combustion reaction, and the char formation amount and the char layer density are improved, and the flame retardant performance of the polyolefin material is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural view of an environment-friendly rat and termite resistant steel tape armored flame-retardant power cable.
In the drawings, the components represented by the respective reference numerals are as follows:
1. a copper conductor; 2. a crosslinked polyethylene insulating layer; 3. a polypropylene filler rope; 4. wrapping the polyvinyl chloride tape with an inner liner; 5. a galvanized steel strip armor layer; 6. flame retardant polyolefin rat and termite resistant sheath.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, the application discloses an environment-friendly rat and termite resistant steel tape armored flame-retardant power cable, which comprises a copper conductor 1, a crosslinked polyethylene insulating layer 2, a polypropylene filling rope 3, a polyvinyl chloride tape wrapping inner liner 4, a galvanized steel tape armor layer 5 and a flame-retardant polyolefin rat and termite resistant sheath 6; the outer surface of the copper conductor 1 is coated with a crosslinked polyethylene insulating layer 2 to form a wire core, 5 wire cores are in a group, the outer layer of one group of wire cores is coated with a polyvinyl chloride tape wrapping inner liner 4, polypropylene filling ropes 3 are arranged between the wire cores and between the wire cores and the polyvinyl chloride tape wrapping inner liner 4, the outer layer of the polyvinyl chloride tape wrapping inner liner 4 is coated with a galvanized steel tape armor layer 5, and the outer layer of the galvanized steel tape armor layer 5 is coated with a flame-retardant polyolefin rat and termite protection sleeve 6; the flame-retardant polyolefin rat and termite preventing sheath 6 is prepared from a rat and termite preventing flame-retardant polyolefin material;
example 1
Preparing a flame retardant:
step S11, adding triethylamine and p-hydroxybenzaldehyde into tetrahydrofuran, then adding hexachlorocyclotriphosphazene, heating and refluxing for 24 hours after the addition, and concentrating under reduced pressure to remove a solvent after the reaction is finished to obtain a nitrogen-phosphorus compound; wherein, the dosage mass ratio of triethylamine, p-hydroxybenzaldehyde and hexachlorocyclotriphosphazene is 7:8:3.5;
and S12, adding dodecyl trimethyl ammonium bromide and capsaicin into a methanol water solution, then adding a sodium hydroxide solution, then adding tetramethyl orthosilicate and 3-aminopropyl trimethoxy silane, stirring at 25 ℃ for 16 hours, centrifuging at 5000r/min for 10min after the reaction is finished, washing with absolute ethyl alcohol, and drying at 55 ℃ to constant weight after the washing is finished to obtain the rat and termite preventing component. Wherein the volume fraction of the aqueous methanol solution is 50%; the concentration of the sodium hydroxide solution is 1mol/L; the dosage ratio of dodecyl trimethyl ammonium bromide, capsaicin, aqueous methanol solution and sodium hydroxide solution is 4g:1.2g:500g:3mL; the dosage mass ratio of the dodecyl trimethyl ammonium bromide, the tetramethyl orthosilicate and the 3-aminopropyl trimethoxy silane is 4:1.3:0.08;
and S13, adding the rat and termite prevention component into dioxane under the protection of nitrogen, then adding a nitrogen-phosphorus compound, stirring and reacting for 6 hours at the temperature of 75 ℃, and cooling, filtering and drying after the reaction is finished to obtain the flame retardant. Wherein the mass ratio of the rat and termite prevention component to the nitrogen and phosphorus compound is 2:0.8.
Example 2
The preparation method of the rat and termite resistant flame retardant polyolefin material comprises the following steps:
weighing 79 parts of polypropylene, 8 parts of the flame retardant prepared in example 1, 0.5 part of tri (2, 4-di-tert-butyl) phenyl phosphite and 5 parts of an auxiliary agent according to parts by weight; the weighed raw materials are stirred and mixed uniformly, then are melted and blended, and finally are subjected to hot press molding to obtain the rat and termite resistant flame retardant polyolefin material; wherein, the auxiliary agent comprises the following raw materials in parts by weight: 2 parts of maleic anhydride grafted polypropylene, 0.5 part of polyethylene wax and 1 part of ethylene propylene diene monomer.
Example 3
The preparation method of the rat and termite resistant flame retardant polyolefin material comprises the following steps:
weighing 80 parts of polypropylene, 9 parts of the flame retardant prepared in the example 1, 0.8 part of tri (2, 4-di-tert-butyl) phenyl phosphite and 8 parts of an auxiliary agent according to the parts by weight; the weighed raw materials are stirred and mixed uniformly, then are melted and blended, and finally are subjected to hot press molding to obtain the rat and termite resistant flame retardant polyolefin material; wherein, the auxiliary agent comprises the following raw materials in parts by weight: 2.5 parts of maleic anhydride grafted polypropylene, 0.8 part of polyethylene wax and 1.5 parts of ethylene propylene diene monomer.
Example 4
The preparation method of the rat and termite resistant flame retardant polyolefin material comprises the following steps:
weighing 83 parts of polypropylene, 10 parts of the flame retardant prepared in the example 1, 1 part of tri (2, 4-di-tert-butyl) phenyl phosphite and 10 parts of an auxiliary agent according to the parts by weight; the weighed raw materials are stirred and mixed uniformly, then are melted and blended, and finally are injection molded to obtain the rat and termite resistant flame retardant polyolefin material; wherein, the auxiliary agent comprises the following raw materials in parts by weight: 3 parts of maleic anhydride grafted polypropylene, 0.9 part of polyethylene wax and 2 parts of ethylene propylene diene monomer.
Comparative example 1
The flame retardant in example 3 was changed to the rat and termite preventing component prepared in example 1, and the remaining raw materials and the preparation process were kept unchanged.
The samples prepared in examples 2-4 and comparative example 1 were tested for flame retardant properties according to the following criteria: oxygen index test is referred to GB/T2406-93 of the test method for Plastic Combustion Performance; vertical combustion is described in "horizontal and vertical determination of the Combustion Properties of plastics" GB/T2408-2008); the flame-retardant polyolefin material for preventing mice and ants is prepared as a test sample, and then the test sample is placed in a condition that mice are suitable for survival, and the mice are randomly divided into one group per cage. Drinking water and limited feeding are taken out during the test, the weight of the sample is weighed every 24 hours, and the biting area of the sample is checked and recorded.
The test results are shown in table 1 below:
TABLE 1
| Example 2 | Example 3 | Example 4 | Comparative example 1 | |
| Oxygen index | 31.1 | 31.5 | 31.5 | 25.3 |
| Vertical combustion grade | V0 | V0 | V0 | Without any means for |
| Area of bite | ＜5％ | ＜5％ | ＜5％ | ＜5％ |
As can be seen from the table 1, the prepared flame-retardant polyolefin material has stable flame retardant performance on the premise of ensuring good rat-proof performance, and fully exerts the effects of environmental protection, rat and termite prevention and flame retardance when applied to a power cable.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is merely illustrative and explanatory of the principles of the application, as various modifications and additions may be made to the specific embodiments described, or similar thereto, by those skilled in the art, without departing from the principles of the application or beyond the scope of the appended claims.
Claims (4)
1. The environment-friendly rat and termite-proof steel tape armored flame-retardant power cable is characterized by comprising a copper conductor (1), wherein a cross-linked polyethylene insulating layer (2) is coated on the outer surface of the copper conductor (1) to form a wire core, 5 wire cores are in a group, a polyvinyl chloride tape wrapping inner liner (4) is coated on the outer layer of one group of the wire cores, polypropylene filling ropes (3) are arranged between the wire cores and between the wire cores and the polyvinyl chloride tape wrapping inner liner (4), a galvanized steel tape armor layer (5) is coated on the outer layer of the polyvinyl chloride tape wrapping inner liner (4), and a flame-retardant polyolefin rat and termite-proof sheath (6) is coated on the outer layer of the galvanized steel tape armor layer (5); the flame-retardant polyolefin rat and termite preventing sheath (6) is prepared from a rat and termite preventing flame-retardant polyolefin material;
the rat and termite resistant flame-retardant polyolefin material is prepared through the following steps:
weighing the raw materials: polyolefin, flame retardant, antioxidant and auxiliary agent; the weighed raw materials are stirred and mixed uniformly, then are melted and blended, and finally are subjected to hot press molding or injection molding to obtain the rat and termite resistant flame retardant polyolefin material;
the flame retardant is prepared by the following steps:
step S11, adding triethylamine and p-hydroxybenzaldehyde into tetrahydrofuran, then adding hexachlorocyclotriphosphazene, heating and refluxing for 24 hours after the addition, and concentrating under reduced pressure to remove a solvent after the reaction is finished to obtain a nitrogen-phosphorus compound;
step S12, adding a rat and termite prevention component into dioxane under the protection of nitrogen, then adding a nitrogen and phosphorus compound, stirring and reacting for 6 hours at the temperature of 75 ℃, and cooling, filtering and drying after the reaction is finished to obtain a flame retardant;
the rat and termite preventing component is prepared through the following steps:
adding dodecyl trimethyl ammonium bromide and capsaicin into a methanol water solution, then adding a sodium hydroxide solution, then adding tetramethyl orthosilicate and 3-aminopropyl trimethoxy silane, stirring at 25 ℃ for 16h, centrifuging at 5000r/min for 10min after the reaction is finished, washing with absolute ethyl alcohol, and drying at 55 ℃ until the weight is constant after the washing is finished to obtain the rat and termite preventing component.
2. An environmentally friendly rat and termite resistant steel tape armored flame retardant power cable according to claim 1 wherein the polyolefin is polypropylene; the antioxidant is phenyl tri (2, 4-di-tert-butyl) phosphite.
3. The environment-friendly rat and termite resistant steel tape armored flame-retardant power cable according to claim 1, wherein the rat and termite resistant flame-retardant polyolefin material comprises the following raw materials in parts by weight: 79-83 parts of polyolefin, 8-10 parts of flame retardant, 0.5-1 part of antioxidant and 5-10 parts of auxiliary agent.
4. An environment-friendly rat and termite resistant steel tape armored flame-retardant power cable according to claim 3, wherein the auxiliary agent comprises the following raw materials in parts by weight: 2-3 parts of maleic anhydride grafted polypropylene, 0.5-0.9 part of polyethylene wax and 1-2 parts of ethylene propylene diene monomer rubber.
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| CN202210087850.4A CN114334259B (en) | 2022-01-25 | 2022-01-25 | Environment-friendly rat and termite prevention steel tape armored flame-retardant power cable |
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| CN114960213A (en) * | 2022-06-20 | 2022-08-30 | 安徽古麒绒材股份有限公司 | Preparation method of damp-proof antibacterial modified down feather fibers |
| CN117024892A (en) * | 2023-08-25 | 2023-11-10 | 江苏宇久电缆科技有限公司 | Buried cable and preparation method thereof |
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| JP2000348542A (en) * | 1999-06-03 | 2000-12-15 | Yazaki Corp | Rat proof electrical cable |
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