CN114121341A - Polyimide and polytetrafluoroethylene insulation composite film for electric wire and preparation method - Google Patents
Polyimide and polytetrafluoroethylene insulation composite film for electric wire and preparation method Download PDFInfo
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- CN114121341A CN114121341A CN202111324134.5A CN202111324134A CN114121341A CN 114121341 A CN114121341 A CN 114121341A CN 202111324134 A CN202111324134 A CN 202111324134A CN 114121341 A CN114121341 A CN 114121341A
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- polyimide
- polytetrafluoroethylene
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- electric wire
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/303—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups H01B3/38 or H01B3/302
- H01B3/306—Polyimides or polyesterimides
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B17/00—Insulators or insulating bodies characterised by their form
- H01B17/56—Insulating bodies
- H01B17/60—Composite insulating bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B19/00—Apparatus or processes specially adapted for manufacturing insulators or insulating bodies
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
- H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
- H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes
- H01B3/44—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins
- H01B3/443—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds
- H01B3/445—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes vinyl resins; acrylic resins from vinylhalogenides or other halogenoethylenic compounds from vinylfluorides or other fluoroethylenic compounds
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Insulating Materials (AREA)
Abstract
The invention belongs to the technical field of composite films, and particularly relates to a polyimide and polytetrafluoroethylene insulation composite film for an electric wire and a preparation method thereof.
Description
Technical Field
The invention relates to the technical field of composite films, in particular to a polyimide and polytetrafluoroethylene insulation composite film for electric wires and a preparation method thereof.
Background
Polyimide is used as a special engineering material and has been widely applied to the fields of aviation, aerospace, microelectronics, nano-scale, liquid crystal, separation membranes, laser and the like. In the last 60 th century, the research, development and utilization of polyimide was listed as one of the most promising engineering plastics in 21 st century in all countries. Polyimide, because of its outstanding characteristics in performance and synthesis, has been fully recognized for its great application prospect, whether as a structural material or as a functional material;
polytetrafluoroethylene, commonly known as "plastic king", is a high molecular polymer prepared by polymerization using tetrafluoroethylene as a monomer. White wax, translucency, heat resistance and cold resistance are excellent, and the glass can be used for a long time at minus 180-260 ℃. The material has the characteristics of acid resistance, alkali resistance and various organic solvents resistance, and is almost insoluble in all solvents. Meanwhile, the polytetrafluoroethylene has the characteristic of high temperature resistance, has extremely low friction coefficient, can be used for lubricating, and becomes an ideal coating for easily cleaning the inner layer of the water pipe.
However, the existing polyimide and polytetrafluoroethylene insulation composite films for electric wires have poor adhesion resistance, and after the electric wires and cables are used for a long time, the electric wires and cables are bonded, so that the use is influenced, and short circuit between the electric wires and cables is easily caused.
Disclosure of Invention
The invention aims to provide a polyimide and polytetrafluoroethylene insulation composite film for electric wires and a preparation method thereof, and aims to solve the problems that the existing polyimide and polytetrafluoroethylene insulation composite film for electric wires in the background art is poor in adhesion resistance, and after the electric wires and cables are used for a long time, the electric wires and cables are bonded, so that the use is influenced, and the short circuit between the electric wires and cables is easily caused.
In order to achieve the purpose, the invention provides the following technical scheme: the polyimide and polytetrafluoroethylene insulation composite film for the electric wire comprises a polyimide/polytetrafluoroethylene composite film, a curing agent, lubricating oil and an ink binder.
Preferably, the preparation method of the polyimide/polytetrafluoroethylene insulation composite film for the electric wire according to claim 1 comprises the following specific steps:
the method comprises the following steps: placing the composite membrane containing the polyimide/polytetrafluoroethylene in a production tank, adding excessive absolute ethyl alcohol into the production tank, and completely soaking the polyimide/polytetrafluoroethylene composite membrane in the absolute ethyl alcohol for 20-30 minutes;
step two: taking out the polyimide/polytetrafluoroethylene composite membrane, adsorbing the absolute ethyl alcohol on the surface of the polyimide/polytetrafluoroethylene composite membrane by using filter paper, standing for 10-20 minutes after complete treatment, and then coating a layer of adhesion glue on the surface of the polyimide/polytetrafluoroethylene composite membrane;
step three: coating a layer of curing agent on the outer surface of the polyimide/polytetrafluoroethylene composite membrane, airing for 30-40min, coating a layer of curing agent again, and repeating the operation for three times;
step four: placing the polyimide/polytetrafluoroethylene composite membrane in the third step in a treatment tank, adding excessive lubricating oil and printing ink binder into the treatment tank, completely mixing and stirring the lubricating oil and the printing ink binder, and placing the polyimide/polytetrafluoroethylene composite membrane in the treatment tank for soaking for 30-40 min;
step five: and placing the soaked polyimide/polytetrafluoroethylene composite membrane into a reaction chamber of a plasma multifunctional laboratory table, adjusting the voltage to 400-500V, and carrying out plasma treatment for 2-3 hours under inert gas and certain working pressure.
Preferably, the inert gas includes nitrogen, argon and helium, and the working pressure needs to be set to 500-1000 Pa.
Preferably, the curing agent comprises vinyl triamine, aminoethyl piperazine, aromatic amines; the lubricating oil comprises perfluoropolyether, perfluorotripentylamine and perfluorotributylamine.
Preferably, the polyimide/polytetrafluoroethylene composite membrane is prepared by a casting method, and the polyimide/polytetrafluoroethylene composite membrane is 200-300 um.
Preferably, the application of the blocking glue and the curing agent needs to be uniformly applied by using a machine.
Preferably, the temperature of the polyimide/polytetrafluoroethylene composite film needs to be controlled to be 20-30 ℃ in the whole processing process.
Compared with the prior art, the invention has the beneficial effects that:
this polyimide/polytetrafluoroethylene complex film is at the in-process of processing, through scribbling lubricating oil on its surface to soak for a long time in the processing pond that adds curing agent and printing ink binder, thereby increase the anti-adhesive performance of polyimide/polytetrafluoroethylene complex film, prevent effectively that wire and cable from taking place the bonding between the wire and cable in the use in later stage, thereby cause the circuit to damage, cause the circuit short circuit.
Drawings
FIG. 1 is a flow chart of the steps of the preparation method of the insulating composite film.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1, the present invention provides a technical solution: the polyimide and polytetrafluoroethylene insulation composite film for the electric wire comprises a polyimide/polytetrafluoroethylene composite film, a curing agent, lubricating oil and an ink binder.
The preparation method of the polyimide and polytetrafluoroethylene insulation composite film for the electric wire according to claim 1, which comprises the following steps:
the method comprises the following steps: placing the composite membrane containing the polyimide/polytetrafluoroethylene in a production tank, adding excessive absolute ethyl alcohol into the production tank, and completely soaking the polyimide/polytetrafluoroethylene composite membrane in the absolute ethyl alcohol for 20-30 minutes;
step two: taking out the polyimide/polytetrafluoroethylene composite membrane, adsorbing the absolute ethyl alcohol on the surface of the polyimide/polytetrafluoroethylene composite membrane by using filter paper, standing for 10-20 minutes after complete treatment, and then coating a layer of adhesion glue on the surface of the polyimide/polytetrafluoroethylene composite membrane;
step three: coating a layer of curing agent on the outer surface of the polyimide/polytetrafluoroethylene composite membrane, airing for 30-40min, coating a layer of curing agent again, and repeating the operation for three times;
step four: placing the polyimide/polytetrafluoroethylene composite membrane in the third step in a treatment tank, adding excessive lubricating oil and printing ink binder into the treatment tank, completely mixing and stirring the lubricating oil and the printing ink binder, and placing the polyimide/polytetrafluoroethylene composite membrane in the treatment tank for soaking for 30-40 min;
step five: and placing the soaked polyimide/polytetrafluoroethylene composite membrane into a reaction chamber of a plasma multifunctional laboratory table, adjusting the voltage to 400-500V, and carrying out plasma treatment for 2-3 hours under inert gas and certain working pressure.
The inert gas comprises nitrogen, argon and helium, and the working pressure needs to be set to be 500-1000 Pa.
The curing agent comprises vinyl triamine, aminoethyl piperazine and aromatic amines; the lubricating oil comprises perfluoropolyether, perfluorotripentylamine and perfluorotributylamine.
The polyimide/polytetrafluoroethylene composite membrane is prepared by a tape casting method, and is 200-300 um.
The adhesion glue and the curing agent are uniformly applied by using a machine.
The temperature of the polyimide/polytetrafluoroethylene composite film needs to be controlled to be 20-30 ℃ in the whole processing process.
Example 1:
the preparation method of the polyimide and polytetrafluoroethylene insulation composite film for the electric wire comprises the following specific steps:
the method comprises the following steps: placing the polyimide/polytetrafluoroethylene composite membrane into a production tank, adding excessive absolute ethyl alcohol into the production tank, and completely soaking the polyimide/polytetrafluoroethylene composite membrane in the absolute ethyl alcohol for 20 minutes;
step two: taking out the polyimide/polytetrafluoroethylene composite membrane, adsorbing the absolute ethyl alcohol on the surface of the polyimide/polytetrafluoroethylene composite membrane by using filter paper, standing for 10 minutes after complete treatment, and then brushing a layer of adhesion glue on the surface of the polyimide/polytetrafluoroethylene composite membrane;
step three: coating a layer of curing agent on the outer surface of the polyimide/polytetrafluoroethylene composite membrane, drying for 30min, coating a layer of curing agent again, and repeating the operation for three times;
step four: placing the polyimide/polytetrafluoroethylene composite membrane in the third step in a treatment tank, adding excessive lubricating oil and printing ink binder into the treatment tank, completely mixing and stirring the lubricating oil and the printing ink binder, and placing the polyimide/polytetrafluoroethylene composite membrane in the treatment tank for soaking for 30 min;
step five: placing the soaked polyimide/polytetrafluoroethylene composite membrane into a reaction chamber of a plasma multifunctional laboratory table, adjusting the voltage to 400V, and carrying out plasma treatment for 2 hours under inert gas and certain working pressure;
example 2:
the preparation method of the polyimide and polytetrafluoroethylene insulation composite film for the electric wire comprises the following specific steps:
the method comprises the following steps: placing the polyimide/polytetrafluoroethylene-containing composite membrane into a production tank, adding excessive absolute ethyl alcohol into the production tank, and completely soaking the polyimide/polytetrafluoroethylene composite membrane in the absolute ethyl alcohol for 25 minutes;
step two: taking out the polyimide/polytetrafluoroethylene composite membrane, adsorbing the absolute ethyl alcohol on the surface of the polyimide/polytetrafluoroethylene composite membrane by using filter paper, standing for 15 minutes after complete treatment, and then brushing a layer of adhesion glue on the surface of the polyimide/polytetrafluoroethylene composite membrane;
step three: coating a layer of curing agent on the outer surface of the polyimide/polytetrafluoroethylene composite membrane, drying for 35min, coating a layer of curing agent again, and repeating the operation for three times;
step four: placing the polyimide/polytetrafluoroethylene composite membrane in the third step in a treatment tank, adding excessive lubricating oil and printing ink binder into the treatment tank, completely mixing and stirring the lubricating oil and the printing ink binder, and placing the polyimide/polytetrafluoroethylene composite membrane in the treatment tank for soaking for 35 min;
step five: placing the soaked polyimide/polytetrafluoroethylene composite membrane into a reaction chamber of a plasma multifunctional laboratory table, adjusting the voltage to 450V, and carrying out plasma treatment for 2.5 hours under inert gas and certain working pressure;
example 3:
the preparation method of the polyimide and polytetrafluoroethylene insulation composite film for the electric wire comprises the following specific steps:
the method comprises the following steps: placing the composite membrane containing the polyimide/polytetrafluoroethylene into a production tank, adding excessive absolute ethyl alcohol into the production tank, and completely soaking the polyimide/polytetrafluoroethylene composite membrane in the absolute ethyl alcohol for 30 minutes;
step two: taking out the polyimide/polytetrafluoroethylene composite membrane, adsorbing the absolute ethyl alcohol on the surface of the polyimide/polytetrafluoroethylene composite membrane by using filter paper, standing for 20 minutes after complete treatment, and then brushing a layer of adhesion glue on the surface of the polyimide/polytetrafluoroethylene composite membrane;
step three: coating a layer of curing agent on the outer surface of the polyimide/polytetrafluoroethylene composite membrane, drying for 40min, coating a layer of curing agent again, and repeating the operation for three times;
step four: placing the polyimide/polytetrafluoroethylene composite membrane in the third step in a treatment tank, adding excessive lubricating oil and printing ink binder into the treatment tank, completely mixing and stirring the lubricating oil and the printing ink binder, and placing the polyimide/polytetrafluoroethylene composite membrane in the treatment tank for soaking for 40 min;
step five: and placing the soaked polyimide/polytetrafluoroethylene composite membrane into a reaction chamber of a plasma multifunctional laboratory, adjusting the voltage to be 500V, and carrying out plasma treatment for 3 hours under inert gas and certain working pressure.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a polyimide, polytetrafluoroethylene insulation complex film for electric wire which characterized in that: the polyimide and polytetrafluoroethylene insulation composite film for the electric wire comprises a polyimide/polytetrafluoroethylene composite film, a curing agent, lubricating oil and an ink binder.
2. A method for preparing the polyimide-polytetrafluoroethylene insulation composite film for electric wires according to claim 1, wherein the method comprises the following steps: the preparation method of the polyimide and polytetrafluoroethylene insulation composite film for the electric wire comprises the following specific steps:
the method comprises the following steps: placing the composite membrane containing the polyimide/polytetrafluoroethylene in a production tank, adding excessive absolute ethyl alcohol into the production tank, and completely soaking the polyimide/polytetrafluoroethylene composite membrane in the absolute ethyl alcohol for 20-30 minutes;
step two: taking out the polyimide/polytetrafluoroethylene composite membrane, adsorbing the absolute ethyl alcohol on the surface of the polyimide/polytetrafluoroethylene composite membrane by using filter paper, standing for 10-20 minutes after complete treatment, and then coating a layer of adhesion glue on the surface of the polyimide/polytetrafluoroethylene composite membrane;
step three: coating a layer of curing agent on the outer surface of the polyimide/polytetrafluoroethylene composite membrane, airing for 30-40min, coating a layer of curing agent again, and repeating the operation for three times;
step four: placing the polyimide/polytetrafluoroethylene composite membrane in the third step in a treatment tank, adding excessive lubricating oil and printing ink binder into the treatment tank, completely mixing and stirring the lubricating oil and the printing ink binder, and placing the polyimide/polytetrafluoroethylene composite membrane in the treatment tank for soaking for 30-40 min;
step five: and placing the soaked polyimide/polytetrafluoroethylene composite membrane into a reaction chamber of a plasma multifunctional laboratory table, adjusting the voltage to 400-500V, and carrying out plasma treatment for 2-3 hours under inert gas and certain working pressure.
3. The polyimide and polytetrafluoroethylene insulation composite film for the electric wire and the preparation method thereof according to claim 2, wherein the polyimide and polytetrafluoroethylene insulation composite film comprises the following components in parts by weight: the inert gas comprises nitrogen, argon and helium, and the working pressure needs to be set to be 500-1000 Pa.
4. The polyimide and polytetrafluoroethylene insulation composite film for the electric wire and the preparation method thereof according to claim 2, wherein the polyimide and polytetrafluoroethylene insulation composite film comprises the following components in parts by weight: the curing agent comprises vinyl triamine, aminoethyl piperazine and aromatic amines; the lubricating oil comprises perfluoropolyether, perfluorotripentylamine and perfluorotributylamine.
5. The polyimide and polytetrafluoroethylene insulation composite film for the electric wire and the preparation method thereof according to claim 2, wherein the polyimide and polytetrafluoroethylene insulation composite film comprises the following components in parts by weight: the polyimide/polytetrafluoroethylene composite membrane is prepared by a tape casting method, and is 200-300 um.
6. The polyimide and polytetrafluoroethylene insulation composite film for the electric wire and the preparation method thereof according to claim 2, wherein the polyimide and polytetrafluoroethylene insulation composite film comprises the following components in parts by weight: the adhesion glue and the curing agent are uniformly applied by using a machine.
7. The polyimide and polytetrafluoroethylene insulation composite film for the electric wire and the preparation method thereof according to claim 2, wherein the polyimide and polytetrafluoroethylene insulation composite film comprises the following components in parts by weight: the temperature of the polyimide/polytetrafluoroethylene composite film needs to be controlled to be 20-30 ℃ in the whole processing process.
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| CN202111324134.5A CN114121341A (en) | 2021-11-10 | 2021-11-10 | Polyimide and polytetrafluoroethylene insulation composite film for electric wire and preparation method |
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| CN202111324134.5A CN114121341A (en) | 2021-11-10 | 2021-11-10 | Polyimide and polytetrafluoroethylene insulation composite film for electric wire and preparation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115785509A (en) * | 2022-12-08 | 2023-03-14 | 安徽中科宇顺科技有限公司 | Preparation method of low-dielectric polyimide/polytetrafluoroethylene heat-insulating film |
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2021
- 2021-11-10 CN CN202111324134.5A patent/CN114121341A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115785509A (en) * | 2022-12-08 | 2023-03-14 | 安徽中科宇顺科技有限公司 | Preparation method of low-dielectric polyimide/polytetrafluoroethylene heat-insulating film |
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