CN112126180A - High-sealing-performance sealing strip for vacuum sealing valve - Google Patents
High-sealing-performance sealing strip for vacuum sealing valve Download PDFInfo
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- CN112126180A CN112126180A CN202011061886.2A CN202011061886A CN112126180A CN 112126180 A CN112126180 A CN 112126180A CN 202011061886 A CN202011061886 A CN 202011061886A CN 112126180 A CN112126180 A CN 112126180A
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- sealing strip
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- fluororubber
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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
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2206—Oxides; Hydroxides of metals of calcium, strontium or barium
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/222—Magnesia, i.e. magnesium oxide
-
- 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
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/10—Materials in mouldable or extrudable form for sealing or packing joints or covers
- C09K2003/1034—Materials or components characterised by specific properties
- C09K2003/1078—Fire-resistant, heat-resistant materials
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a high-sealing-performance sealing strip for a vacuum sealing valve, which comprises the following components in parts by weight: 70-90 parts of fluororubber, 3-8 parts of acid absorbent, 2-5 parts of cross-linking agent, 4-13 parts of carboxyl-terminated liquid fluororubber, 1-50 parts of fluorine thermoplastic resin and 3-7 parts of accelerator. The high-sealing-performance sealing strip can realize heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance by using the fluororubber material, so that a vacuum sealing valve can be subjected to vacuum sealing, and the high-sealing-performance sealing strip can be used for normally sealing and operating severe environments such as high-temperature and corrosion environments, and can realize more operations through the high-sealing-performance sealing strip.
Description
Technical Field
The invention belongs to the technical field of sealing strips, and particularly relates to a high-sealing-performance sealing strip for a vacuum sealing valve.
Background
With the application of the sealing strips to various industries such as automobiles, doors and windows, cabinets, refrigerators, containers and the like from 80 s in China, specific products such as automobile sealing strips, mechanical sealing strips, door and window sealing strips and the like are developed in sequence according to the requirements of different industries. The sealing strip is a product which seals an object, is not easy to open, and has the functions of shock absorption, water resistance, sound insulation, heat insulation, dust prevention, fixation and the like. The sealing strip is made of various materials such as rubber, paper, metal, plastic and the like. Now, people carry out more and more operations of vacuum sealing, so that the requirement on the sealing effect of the sealing strip is higher.
However, the above solution has the following disadvantages in use: the sealing strip on the general market is different because of inside preparation material to probably lead to under some environment, thereby its sealing strip leakproofness reduces to some extent and leads to not having the sealed effect to influence its normal use, and general sealing strip to with the condition such as high temperature and corruption lead to the sealing strip direct damage easily moreover.
Disclosure of Invention
The present invention is directed to a high-sealing-performance sealing strip for vacuum sealing valves, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a high-sealing-performance sealing strip for a vacuum sealing valve comprises the following components in parts by weight: 70-90 parts of fluororubber, 3-8 parts of acid absorbent, 2-5 parts of cross-linking agent, 4-13 parts of carboxyl-terminated liquid fluororubber, 1-50 parts of fluorine thermoplastic resin and 3-7 parts of accelerator.
Preferably, the fluororubber is a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene.
Preferably, the acid scavenger is any one of magnesium oxide, calcium oxide, magnesium hydroxide, zinc hydroxide, and calcium hydroxide.
Preferably, the accelerator comprises the following components in parts by weight of accelerator M-751.0-2.0 parts, accelerator DPTT-700.5-1.0 part, accelerator DTDM-800.5-1.0 part, accelerator DTDM-800.8 parts and sulfur S-801.2 parts.
Preferably, the crosslinking agent is any combination of triallyl isocyanurate, triallyl cyanurate, trimethylolpropane trimethacrylate, vinyl-containing polybutylene, trimethylolpropane triacrylate, and N-m-phenylene bismaleimide.
Preferably, the fluorine thermoplastic resin comprises the following components in parts by weight: 1 part of polytetrafluoroethylene, 2 parts of polychlorotrifluoroethylene, 1 part of polyvinylidene fluoride, 1.5 parts of ethylene-tetrafluoroethylene copolymer, 3 parts of ethylene-chlorotrifluoroethylene copolymer and 1 part of polyvinyl fluoride.
Preferably, the carboxyl-terminated liquid fluororubber is one or more of two copolymers including: 1. liquid copolymers of vinylidene fluoride, tetrafluoroethylene, and hexafluoropropylene having terminal carboxyl groups; 2. liquid copolymers of vinylidene fluoride and hexafluoropropylene having terminal carboxyl groups.
The invention has the technical effects and advantages that:
the high-sealing-performance sealing strip can realize heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance by using the fluororubber material, so that a vacuum sealing valve can be subjected to vacuum sealing, and the high-sealing-performance sealing strip can be used for normally sealing and operating severe environments such as high-temperature and corrosion environments, and can realize more operations through the high-sealing-performance sealing strip.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
Example 1
A high-tightness sealing strip for a vacuum sealing valve is characterized in that; the material of each component is as follows by weight: 70 parts of fluororubber, 3 parts of acid absorbent, 25 parts of crosslinking agent, 4 parts of carboxyl-terminated liquid fluororubber, 20 parts of fluorothermoplastic resin and 4 parts of accelerator.
The fluororubber is a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene.
The acid acceptor is magnesium oxide.
The accelerator comprises the following components, by weight, M-751.0 parts of accelerator, DPTT-700.5 parts of accelerator, DTDM-800.5 parts of accelerator, DTDM-800.8 parts of accelerator and S-801.2 parts of sulfur.
The cross-linking agent is a combination of triallyl isocyanurate and triallyl cyanurate.
The fluorine thermoplastic resin comprises the following components in parts by weight: 1 part of polytetrafluoroethylene, 2 parts of polychlorotrifluoroethylene, 1 part of polyvinylidene fluoride, 1.5 parts of ethylene-tetrafluoroethylene copolymer, 3 parts of ethylene-chlorotrifluoroethylene copolymer and 1 part of polyvinyl fluoride.
The carboxyl-terminated liquid fluororubber is a liquid copolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene with terminal carboxyl.
Example 2
A high-sealing-performance sealing strip for a vacuum sealing valve comprises the following components in parts by weight: 80 parts of fluororubber, 5 parts of acid absorbent, 4 parts of crosslinking agent, 6 parts of carboxyl-terminated liquid fluororubber, 35 parts of fluorothermoplastic resin and 5 parts of accelerator.
The fluororubber is a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene.
The acid acceptor is zinc hydroxide.
The accelerator comprises the following components, by weight, M-752.0 parts of accelerator, DPTT-700.5 parts of accelerator, DTDM-800.5 parts of accelerator, DTDM-800.8 parts of accelerator and S-801.2 parts of sulfur.
The cross-linking agent is a combination of trimethylolpropane trimethacrylate, vinyl-containing polybutylene and trimethylolpropane triacrylate.
The fluorine thermoplastic resin comprises the following components in parts by weight: 1 part of polytetrafluoroethylene, 2 parts of polychlorotrifluoroethylene, 1 part of polyvinylidene fluoride, 1.5 parts of ethylene-tetrafluoroethylene copolymer, 3 parts of ethylene-chlorotrifluoroethylene copolymer and 1 part of polyvinyl fluoride.
The carboxyl-terminated liquid fluororubber is a liquid copolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene with terminal carboxyl.
Example 3
A high-sealing-performance sealing strip for a vacuum sealing valve comprises the following components in parts by weight: 90 parts of fluororubber, 8 parts of acid absorbent, 5 parts of crosslinking agent, 13 parts of carboxyl-terminated liquid fluororubber, 50 parts of fluorothermoplastic resin and 6 parts of accelerator.
The fluororubber is a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene.
The acid scavenger is calcium hydroxide.
The accelerator comprises the following components, by weight, M-752.0 parts of accelerator, DPTT-701.0 parts of accelerator, DTDM-801.0 parts of accelerator, DTDM-800.8 parts of accelerator and S-801.2 parts of sulfur.
The cross-linking agent is any combination of triallyl isocyanurate, triallyl cyanurate and trimethylolpropane trimethacrylate.
The fluorine thermoplastic resin comprises the following components in parts by weight: 1 part of polytetrafluoroethylene, 2 parts of polychlorotrifluoroethylene, 1 part of polyvinylidene fluoride, 1.5 parts of ethylene-tetrafluoroethylene copolymer, 3 parts of ethylene-chlorotrifluoroethylene copolymer and 1 part of polyvinyl fluoride.
The carboxyl-terminated liquid fluororubber is a liquid copolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene with terminal carboxyl.
Through mixing fluororubber, acid acceptor, cross-linking agent, end carboxyl liquid fluororubber, fluorine thermoplastic resin, these materials of promoter, thereby can effectual promotion sealing strip's sealing performance, make it can be arranged in the vacuum seal valve, go on to the sealed space that prevents of valve, the accessible uses sealing strip extrusion device to carry out the heating extrusion to such material after accomplishing the mixture, but at last processes the processing for the sealing strip in the later stage through the extrusion device shaping for the sealing strip.
The following table shows the sealing strip data parameters produced for each example:
| name (R) | Hardness of | Temperature of use | Tensile strength | Elongation of |
| Example 1 | 80 | -20-260℃ | 15.01 | 161 |
| Example 2 | 78 | -20-280℃ | 16.6 | 200 |
| Example 3 | 78 | -30-310℃ | 21.8 | 235 |
| General sealing strip | 65 | -15-230℃ | 14.22 | 152 |
The high-sealing-performance sealing strip can realize heat resistance, oxidation resistance, oil resistance, corrosion resistance and atmospheric aging resistance by using the fluororubber material, so that a vacuum sealing valve can be subjected to vacuum sealing, and the high-sealing-performance sealing strip can be used for normally sealing and operating severe environments such as high-temperature and corrosion environments, and can realize more operations through the high-sealing-performance sealing strip.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. A high-tightness sealing strip for a vacuum sealing valve is characterized in that; the material of each component is as follows by weight: 70-90 parts of fluororubber, 3-8 parts of acid absorbent, 2-5 parts of cross-linking agent, 4-13 parts of carboxyl-terminated liquid fluororubber, 1-50 parts of fluorine thermoplastic resin and 3-6 parts of accelerator.
2. The high-sealability sealing strip for a vacuum sealing valve according to claim 1, wherein; the fluororubber is a terpolymer of vinylidene fluoride, tetrafluoroethylene and hexafluoropropylene.
3. The high-sealability sealing strip for a vacuum sealing valve according to claim 1, wherein; the acid acceptor is any one of magnesium oxide, calcium oxide, magnesium hydroxide, zinc hydroxide and calcium hydroxide.
4. The high-sealability sealing strip for a vacuum sealing valve according to claim 1, wherein; the accelerator comprises the following components, by weight, 2.0 parts of accelerator M-751.0, 1.5 parts of accelerator DPTT-700.0, 1.0 part of accelerator DTDM-800.5, 800.8 parts of accelerator DTDM and 801.2 parts of sulfur.
5. The high-sealability sealing strip for a vacuum sealing valve according to claim 1, wherein; the cross-linking agent is any combination of triallyl isocyanurate, triallyl cyanurate, trimethylolpropane trimethacrylate, poly-dibutylene containing vinyl, trimethylolpropane triacrylate and N-m-phenylene bismaleimide.
6. The high-sealability sealing strip for a vacuum sealing valve according to claim 1, wherein; the fluorine thermoplastic resin comprises the following components in parts by weight: 1 part of polytetrafluoroethylene, 2 parts of polychlorotrifluoroethylene, 1 part of polyvinylidene fluoride, 1.5 parts of ethylene-tetrafluoroethylene copolymer, 3 parts of ethylene-chlorotrifluoroethylene copolymer and 1 part of polyvinyl fluoride.
7. The high-sealability sealing strip for a vacuum sealing valve according to claim 1, wherein; the carboxyl-terminated liquid fluorine rubber is one or more of the following two copolymers: 1. liquid copolymers of vinylidene fluoride, tetrafluoroethylene, and hexafluoropropylene having terminal carboxyl groups; 2. liquid copolymers of vinylidene fluoride and hexafluoropropylene having terminal carboxyl groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061886.2A CN112126180A (en) | 2020-09-30 | 2020-09-30 | High-sealing-performance sealing strip for vacuum sealing valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011061886.2A CN112126180A (en) | 2020-09-30 | 2020-09-30 | High-sealing-performance sealing strip for vacuum sealing valve |
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| Publication Number | Publication Date |
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| CN112126180A true CN112126180A (en) | 2020-12-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011061886.2A Withdrawn CN112126180A (en) | 2020-09-30 | 2020-09-30 | High-sealing-performance sealing strip for vacuum sealing valve |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743370A (en) * | 2004-09-02 | 2006-03-08 | 霓佳斯株式会社 | Fluoro-rubber composite, rubber material using the same, and a method of manufacturing a fluoro-rubber molded product |
| CN105082495A (en) * | 2015-07-07 | 2015-11-25 | 上海交通大学 | Preparation method of fluororesin composite, fluororesin composite and product produced by molding fluororesin composite |
| CN108948605A (en) * | 2018-07-06 | 2018-12-07 | 北京化工大学 | A kind of carboxyl-terminated liquid fluorine rubber/solid fluorubber coblended elastomer material and preparation method thereof |
| CN111349293A (en) * | 2018-12-20 | 2020-06-30 | 广州市东泓氟塑料科技有限公司 | Fluororubber composition |
-
2020
- 2020-09-30 CN CN202011061886.2A patent/CN112126180A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1743370A (en) * | 2004-09-02 | 2006-03-08 | 霓佳斯株式会社 | Fluoro-rubber composite, rubber material using the same, and a method of manufacturing a fluoro-rubber molded product |
| CN105082495A (en) * | 2015-07-07 | 2015-11-25 | 上海交通大学 | Preparation method of fluororesin composite, fluororesin composite and product produced by molding fluororesin composite |
| CN108948605A (en) * | 2018-07-06 | 2018-12-07 | 北京化工大学 | A kind of carboxyl-terminated liquid fluorine rubber/solid fluorubber coblended elastomer material and preparation method thereof |
| CN111349293A (en) * | 2018-12-20 | 2020-06-30 | 广州市东泓氟塑料科技有限公司 | Fluororubber composition |
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Address after: No. 588, Xinxing Avenue, Zonghan street, Xinxing Industrial Cluster District, Cixi City, Ningbo City, Zhejiang Province Applicant after: Ningbo Henghe Precision Industry Co.,Ltd. Address before: No. 588, Xinxing Avenue, Zonghan street, Xinxing Industrial Cluster District, Cixi City, Ningbo City, Zhejiang Province Applicant before: NINGBO HENGHE MOULD Co.,Ltd. |
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Application publication date: 20201225 |