CN100389163C - Polytetrafluoroethylene sealing ring material and its preparation method - Google Patents
Polytetrafluoroethylene sealing ring material and its preparation method Download PDFInfo
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- CN100389163C CN100389163C CNB2006100427271A CN200610042727A CN100389163C CN 100389163 C CN100389163 C CN 100389163C CN B2006100427271 A CNB2006100427271 A CN B2006100427271A CN 200610042727 A CN200610042727 A CN 200610042727A CN 100389163 C CN100389163 C CN 100389163C
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- sealing ring
- magnetic
- ring material
- polytetrafluoroethylene
- carbon fiber
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Abstract
The present invention relates to polytetrafluoroethylene sealing ring material and a preparation method thereof. Polytetrafluoroethylene suspension resin powder material is used as base material. The polytetrafluoroethylene sealing ring material contains glass fiber, carbon fiber and molybdenum disulfide. The glass fiber uses magnetic powder as a filling agent. The polytetrafluoroethylene sealing ring material contains the following ingredients by the weight percentage: 60 to 80 wt% of polytetrafluoroethylene, 10 to 20 wt% of magnetic powder, 5 to 10 wt% of carbon fiber, 5 wt% of molybdenum disulfide and 1 to 5 wt% of glass fiber. The magnetic powder adopts barium ferrite, or strontia ferrite, or cobalt ferrite, or neodymium iron boron. According to the content of the ingredients, raw material is selected, the raw material is thoroughly mixed, and the raw material is molded and formed. The present invention is characterized in that the pressure is controlled to be from 15 to 20MPa, the heating temperature is controlled to be from 360 DEG C to 380 DEG C, heat preservation is carried out for 5 to 10 minutes, an obtained product is finally cooled until the room temperature is reached, and a sealing ring can be obtained.
Description
Technical field
The invention belongs to the manufacture craft of a kind of industrial nonmetal moulding soft packing seal material and sealing-ring, be specifically related to the preparation method of a kind of fluid sealing with (particularly used in fields such as chemical machinery, oil, valve) magnetic teflin ring.
Background technology
Application number is the patent of invention that CN91108190.9, name are called carbon-fibre reinforced polytetrafluorethylesealing sealing material and preparation method thereof, with the tetrafluoroethylene is base-material, with the carbon fibre is strongthener, compound again to attach bronze powder, glass, Graphite Powder 99, molybdenum disulphide powder, talcum powder etc. material modified, through pulverizing, mixing, compression molding, around operations such as knot, shaping maintenance and make.Its weak point is: thermal conductivity is relatively poor, and is slower to scattering and disappearing of the friction heat that produces in dynamic seal, is unfavorable for sealing, and desired seal power all produces by crimp, reach the sealing effectiveness of regulation, needs the extrusion deformation degree of sealing member bigger.
Summary of the invention
The objective of the invention is to improve the thermal conductivity of sealing member, reduce the extrusion deformation degree of sealing member.
The present invention is polytetrafluoroethylsealing sealing ring material and preparation method thereof, with the polytetrafluoroethylsuspending suspending resin powder is body material, its material component comprises glass fibre, carbon fiber, molybdenumdisulphide, is weighting agent with the magnetic, and the weight percent content of its each component is:
Tetrafluoroethylene 60～80%
Magnetic 10～20%
Carbon fiber 5～10%
Molybdenumdisulphide 5%
Glass fibre 0～5%.
Above-mentioned PTFE stuffing materials, its magnetic is a barium ferrite, or strontium ferrites, or vectolite, or neodymium iron boron.The magnetic particle diameter is 100 μ m.
Its preparation method is, each component concentration by the above polytetrafluoroethylsealing sealing ring material prepares raw material, thorough mixing, die forming, it is characterized in that its pressure-controlling is at 15～20MPa, heating and temperature control is incubated 5～10 minutes at 360 ℃～380 ℃, is cooled to room temperature at last and can obtains sealing-ring.
Press the tension of the magnetic teflon seal of the present invention's preparation, pressure degree height, rebound resilience is good, enough chemical stabilities are arranged, be difficult for decomposing, do not pollute (food grade), not swelling, not softening, strong corrosion resistant is applicable to all strong acid, strong corrosive mediums such as highly basic, thermal conductivity is good, the temperature range of using is-196 ℃～260 ℃, and self lubricity is arranged, friction, it is little to wear and tear, and the magnetic force that magnetic particle produces in the sealing range is as sealing force, the corresponding necessary sealing force that reduces by the crimp generation makes the compressive deformation amount of sealing-ring under sealed state reduce and favorable sealing property greatly.
Embodiment
Sealing material of the present invention is a body material with the polytetrafluoroethylsuspending suspending resin powder, and with barium ferrite, strontium ferrites, vectolite, a kind of magnetic in the neodymium iron boron are as weighting agent, and requiring the magnetic particle diameter is 100 μ m.Add properties-correcting agent such as glass fibre, carbon fiber, molybdenum disulphide powder again, properties-correcting agent sieves through pulverizing 200 orders.The weight percent content of its each composition is:
Tetrafluoroethylene 60～80%
Magnetic 10～20%
Carbon fiber 5～10%
Molybdenumdisulphide 5%
Glass fibre 0～5%.
By above-mentioned content confected materials, even through thorough mixing, die forming, pressure-controlling is at 15～20MPa, and the temperature of heating is controlled at 360 ℃～380 ℃ insulations 5～10 minutes, is cooled to the sealing-ring that room temperature can obtain preparing at last.
Claims (4)
1. polytetrafluoroethylsealing sealing ring material is a body material with the polytetrafluoroethylsuspending suspending resin powder, comprises glass fibre, carbon fiber, molybdenumdisulphide, it is characterized in that with the magnetic being weighting agent, and the weight percent content of its each component is:
Tetrafluoroethylene 60～80%
Magnetic 10～20%
Carbon fiber 5～10%
Molybdenumdisulphide 5%
Glass fibre 0～5%.
2. PTFE stuffing materials according to claim 1 is characterized in that magnetic is a barium ferrite, or strontium ferrites, or vectolite, or neodymium iron boron.
3. polytetrafluoroethylsealing sealing ring material according to claim 1 is characterized in that the magnetic particle diameter is 100 μ m.
4. the preparation method of polytetrafluoroethylsealing sealing ring material, each component concentration according to the described magnetic polytetrafluoroethylsealing sealing ring material of claim 1 prepares raw material, thorough mixing, die forming, it is characterized in that its pressure-controlling is at 15～20MPa, heating and temperature control is incubated 5～10 minutes at 360 ℃～380 ℃, is cooled to room temperature at last and can obtains sealing-ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100427271A CN100389163C (en) | 2006-04-21 | 2006-04-21 | Polytetrafluoroethylene sealing ring material and its preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100427271A CN100389163C (en) | 2006-04-21 | 2006-04-21 | Polytetrafluoroethylene sealing ring material and its preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1865384A CN1865384A (en) | 2006-11-22 |
| CN100389163C true CN100389163C (en) | 2008-05-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100427271A Expired - Fee Related CN100389163C (en) | 2006-04-21 | 2006-04-21 | Polytetrafluoroethylene sealing ring material and its preparation method |
Country Status (1)
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| CN (1) | CN100389163C (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285530B (en) * | 2008-05-07 | 2011-06-01 | 浙江沃尔达铜业有限公司 | Pump ball-valve |
| WO2010054243A2 (en) | 2008-11-07 | 2010-05-14 | Saint-Gobain Performance Plastics Corporation | Method of forming large diameter thermoplastic seal |
| CN102257088A (en) | 2008-11-07 | 2011-11-23 | 美国圣戈班性能塑料公司 | Large diameter thermoplastic seal |
| CN101735536B (en) * | 2010-01-14 | 2012-07-11 | 张家港富瑞特种装备股份有限公司 | Formula of valve liner material |
| CN101885887B (en) * | 2010-07-12 | 2012-05-30 | 天津市天塑滨海氟塑料制品有限公司 | Polytetrafluoethylene material filled with carbon fiber and preparation method thereof |
| CN102022547B (en) * | 2010-12-17 | 2013-08-28 | 哈尔滨东安实业发展有限公司 | Preparation method of polytetrafluoroethylene double-sealing-lip sealing ring device |
| CN102516937B (en) * | 2011-11-11 | 2014-04-09 | 姚年红 | Volume suction superplastic nano-composite filler |
| RU2614275C2 (en) | 2012-05-23 | 2017-03-24 | Сен-Гобен Перфоманс Пластикс Корпорейшн | Method of large diameter thermoplastic sealants moulding |
| CN104877280A (en) * | 2015-04-11 | 2015-09-02 | 安徽中威光电材料有限公司 | Polytetrafluoroethylene-based magnetic efficient heat dissipation material for LED light source and preparation method of polytetrafluoroethylene-based magnetic efficient heat dissipation material |
| CN106009436A (en) * | 2016-07-29 | 2016-10-12 | 苏州新区特氟龙塑料制品厂 | Magnetic hard PTFE (Poly Tetra Fluoro Ethylene) plastic |
| CN106243584A (en) * | 2016-07-29 | 2016-12-21 | 苏州新区特氟龙塑料制品厂 | A kind of magnetic hard Teflon engineering plastics |
| CN105968664A (en) * | 2016-07-29 | 2016-09-28 | 苏州新区特氟龙塑料制品厂 | Magnetic heat-conductive Teflon plastic |
| CN106009437A (en) * | 2016-07-29 | 2016-10-12 | 苏州新区特氟龙塑料制品厂 | Magnetic conductive hard PTFE (Poly Tetra Fluoro Ethylene) engineering plastic |
| CN108591018B (en) * | 2018-04-25 | 2019-09-10 | 河南省沪鑫实业有限公司 | Oilless air compressor piston bushing and its processing method |
| CN111430594A (en) * | 2020-04-02 | 2020-07-17 | 龙岩高格微扣科技有限公司 | High-temperature-resistant button battery and manufacturing process thereof |
| CN114165587A (en) * | 2021-11-04 | 2022-03-11 | 沈阳恒曼压缩机制造有限公司 | Medium-high pressure nitrogen gas sealing filler structure |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN1865384A (en) | 2006-11-22 |
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Granted publication date: 20080521 Termination date: 20100421 |