CN107501819B - Modified polytetrafluoroethylene resin - Google Patents
Modified polytetrafluoroethylene resin Download PDFInfo
- Publication number
- CN107501819B CN107501819B CN201710835477.5A CN201710835477A CN107501819B CN 107501819 B CN107501819 B CN 107501819B CN 201710835477 A CN201710835477 A CN 201710835477A CN 107501819 B CN107501819 B CN 107501819B
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- Prior art keywords
- polytetrafluoroethylene resin
- modified polytetrafluoroethylene
- polytetrafluoroethylene
- prepared
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/18—Homopolymers or copolymers or tetrafluoroethene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K9/00—Use of pretreated ingredients
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/20—Applications use in electrical or conductive gadgets
Abstract
The invention discloses a modified polytetrafluoroethylene resin which is prepared from the following raw materials in parts by weight: 0.79-0.99 part of polytetrafluoroethylene, 0-0.1 part of glass fiber, 0-0.1 part of polyimide and 0.01 part of fluorinated graphene. The modified polytetrafluoroethylene resin has strong electrical insulation, low linear expansion coefficient, high mechanical strength and excellent wear resistance, and the average linear expansion coefficient of the modified polytetrafluoroethylene resin at 40-60 ℃ is reduced to 10‑5Of the order of/° c.
Description
Technical Field
The invention relates to the field of plastics, in particular to a modified polytetrafluoroethylene resin applicable to the power industry.
Background
Polytetrafluoroethylene has many excellent properties such as high temperature resistance, corrosion resistance, strong electrical insulation and the like as a bar, a plate, a pipe, a wire and the like, and is widely applied to special occasions such as a high electric field, a high magnetic field and the like of a high-voltage power transmission system, such as a water pipe of internal cooling water, a fastener for fixing equipment and the like. However, polytetrafluoroethylene materials also have disadvantages such as low mechanical strength, large linear expansion coefficient, and poor abrasion resistance, and particularly, an article made of polytetrafluoroethylene as a base material is easily deformed due to a large linear expansion coefficient. The average linear expansion coefficient of the polytetrafluoroethylene at 40-60 ℃ is about 40 multiplied by 10 < -5 >/DEG C (the detection method is GB1036-89, the same below). In a valve hall of a high-voltage direct-current transmission converter valve, the temperature is higher (not lower than 45 ℃), so that the polytetrafluoroethylene material needs to be improved to adapt to the use in a specific environment.
At present, the reinforcing agents of polytetrafluoroethylene base materials are mostly glass fibers, graphite, carbon fibers, carbon powder, polyphenyl ester, polyimide, molybdenum disulfide, ceramic powder, p-polyphenyl, bronze powder, stainless steel powder and the like so as to improve the mechanical strength, the wear resistance and the like, but the linear expansion coefficient is still insufficient.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a modified polytetrafluoroethylene resin which reduces the linear expansion coefficient and improves the wear resistance and the mechanical strength on the premise of ensuring strong electric insulation.
In order to realize the purpose, the invention adopts the technical scheme that:
the modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.79-0.99 part of polytetrafluoroethylene, 0-0.1 part of glass fiber, 0-0.1 part of polyimide and 0.01 part of fluorinated graphene.
Preferably, the modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.79 part of polytetrafluoroethylene, 0.1 part of glass fiber, 0.1 part of polyimide and 0.01 part of fluorinated graphene.
Preferably, the modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.1 part of glass fiber and 0.01 part of fluorinated graphene.
Preferably, the modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.99 part of polytetrafluoroethylene and 0.01 part of fluorinated graphene.
Preferably, the modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.1 part of polyimide and 0.01 part of fluorinated graphene.
Preferably, the modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.07 part of glass fiber, 0.03 part of polyimide and 0.01 part of fluorinated graphene.
Compared with the prior art, the modified polytetrafluoroethylene resin has strong electrical insulation, low linear expansion coefficient, high mechanical strength and excellent wear resistance.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
Example 1:
the modified polytetrafluoroethylene resin of the embodiment is prepared from the following raw materials in parts by weight: 0.79 part of polytetrafluoroethylene, 0.1 part of glass fiber, 0.1 part of polyimide and 0.01 part of fluorinated graphene. The modified polytetrafluoroethylene has an average linear expansion coefficient of 5 × 10 at 40-60 deg.C-5/℃。
Example 2:
the modified polytetrafluoroethylene resin of the embodiment is prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.1 part of glass fiber and 0.01 part of fluorinated graphene. The modified polytetrafluoroethylene resin has an average linear expansion coefficient of 2 × 10 at 40-60 deg.C-5/℃。
Example 3:
the modified polytetrafluoroethylene resin of the embodiment is prepared from the following raw materials in parts by weight: 0.99 part of polytetrafluoroethylene and 0.01 part of fluorinated graphene. The modified polytetrafluoroethylene resin has an average linearity of 40-60 DEG CCoefficient of expansion of 8 x 10-5/℃。
Example 4:
the modified polytetrafluoroethylene resin of the embodiment is prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.1 part of polyimide and 0.01 part of fluorinated graphene. The modified polytetrafluoroethylene resin has an average linear expansion coefficient of 7 x 10 at 40-60 DEG C-5/℃。
Example 5:
the modified polytetrafluoroethylene resin of the embodiment is prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.07 part of glass fiber, 0.03 part of polyimide and 0.01 part of fluorinated graphene. The modified polytetrafluoroethylene resin has an average linear expansion coefficient of 1 × 10 at 40-60 deg.C-5/℃。
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention accordingly, and not to limit the protection scope of the present invention accordingly. All equivalent changes or modifications made in accordance with the spirit of the present disclosure are intended to be covered by the scope of the present disclosure.
Claims (6)
1. The modified polytetrafluoroethylene resin is characterized by being prepared from the following raw materials in parts by weight: 0.79-0.99 part of polytetrafluoroethylene, 0.1 part of glass fiber, 0-0.1 part of polyimide and 0.01 part of fluorinated graphene.
2. The modified polytetrafluoroethylene resin according to claim 1, prepared from the following raw materials in parts by weight: 0.79 part of polytetrafluoroethylene, 0.1 part of glass fiber, 0.1 part of polyimide and 0.01 part of fluorinated graphene.
3. The modified polytetrafluoroethylene resin according to claim 1, prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.1 part of glass fiber and 0.01 part of fluorinated graphene.
4. The modified polytetrafluoroethylene resin is characterized by being prepared from the following raw materials in parts by weight: 0.79-0.99 part of polytetrafluoroethylene, 0.1 part of polyimide and 0.01 part of fluorinated graphene.
5. The modified polytetrafluoroethylene resin according to claim 4, wherein said modified polytetrafluoroethylene resin is prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.1 part of polyimide and 0.01 part of fluorinated graphene.
6. The modified polytetrafluoroethylene resin is characterized by being prepared from the following raw materials in parts by weight: 0.89 part of polytetrafluoroethylene, 0.07 part of glass fiber, 0.03 part of polyimide and 0.01 part of fluorinated graphene.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710835477.5A CN107501819B (en) | 2017-09-15 | 2017-09-15 | Modified polytetrafluoroethylene resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710835477.5A CN107501819B (en) | 2017-09-15 | 2017-09-15 | Modified polytetrafluoroethylene resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107501819A CN107501819A (en) | 2017-12-22 |
| CN107501819B true CN107501819B (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710835477.5A Active CN107501819B (en) | 2017-09-15 | 2017-09-15 | Modified polytetrafluoroethylene resin |
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| Country | Link |
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| CN (1) | CN107501819B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109762281B (en) * | 2019-01-07 | 2021-02-09 | 南京航空航天大学 | Fluorinated graphene modified polytetrafluoroethylene composite material for ultrasonic motor and preparation method thereof |
| CN111303568A (en) * | 2020-02-21 | 2020-06-19 | 广州机械科学研究院有限公司 | Sealing composite material for hydraulic oil cylinder |
| CN111234426A (en) * | 2020-02-21 | 2020-06-05 | 广州机械科学研究院有限公司 | Polytetrafluoroethylene composite material |
| CN111171483A (en) * | 2020-02-21 | 2020-05-19 | 广州机械科学研究院有限公司 | Wear-resistant self-lubricating sealing composite material |
| CN112210145A (en) * | 2020-09-14 | 2021-01-12 | 苏州市桔园管业有限公司 | Modified ultra-high molecular weight PE pipeline |
| CN112774467A (en) * | 2020-12-17 | 2021-05-11 | 重庆奥思赛斯环保科技有限公司 | High-strength high-temperature-resistant organic solvent-resistant separation membrane and preparation method thereof |
| CN113913062A (en) * | 2021-11-08 | 2022-01-11 | 安徽富瑞雪化工科技股份有限公司 | Polytetrafluoroethylene resin modified acrylic acid aqueous emulsion and preparation method and application thereof |
| CN116715968B (en) * | 2023-08-11 | 2023-10-20 | 无锡市湖山化工设备有限公司 | Sealing gasket with sound insulation effect and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530910A (en) * | 2010-12-22 | 2012-07-04 | 海洋王照明科技股份有限公司 | Method for preparing fluorinated graphene |
| CN103122075A (en) * | 2013-03-19 | 2013-05-29 | 苏州格瑞丰纳米科技有限公司 | High heat-conducting thin graphene-based composite material, as well as preparation method and application thereof |
| US8879975B2 (en) * | 2012-11-29 | 2014-11-04 | Xerox Corporation | Fuser member |
| CN105645398A (en) * | 2016-03-10 | 2016-06-08 | 上海大学 | Method for stripping preparation of large-scale fluorinated graphene by supercritical carbon dioxide |
-
2017
- 2017-09-15 CN CN201710835477.5A patent/CN107501819B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102530910A (en) * | 2010-12-22 | 2012-07-04 | 海洋王照明科技股份有限公司 | Method for preparing fluorinated graphene |
| US8879975B2 (en) * | 2012-11-29 | 2014-11-04 | Xerox Corporation | Fuser member |
| CN103122075A (en) * | 2013-03-19 | 2013-05-29 | 苏州格瑞丰纳米科技有限公司 | High heat-conducting thin graphene-based composite material, as well as preparation method and application thereof |
| CN105645398A (en) * | 2016-03-10 | 2016-06-08 | 上海大学 | Method for stripping preparation of large-scale fluorinated graphene by supercritical carbon dioxide |
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| Publication number | Publication date |
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| CN107501819A (en) | 2017-12-22 |
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