CN102719042A - Self-lubrication wear-resistant modified PTFE (Poly Tetra Fluoro Ethylene) sealing material - Google Patents
Self-lubrication wear-resistant modified PTFE (Poly Tetra Fluoro Ethylene) sealing material Download PDFInfo
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- CN102719042A CN102719042A CN2012102019376A CN201210201937A CN102719042A CN 102719042 A CN102719042 A CN 102719042A CN 2012102019376 A CN2012102019376 A CN 2012102019376A CN 201210201937 A CN201210201937 A CN 201210201937A CN 102719042 A CN102719042 A CN 102719042A
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Abstract
The invention relates to the technical field of sealing materials, in particular relates to a self-lubrication wear-resistant modified PTFE (Poly Tetra Fluoro Ethylene) sealing material which is prepared by conducting cold pressing, sintering and sizing on modified PTFE powders, and is 1-4mm in thickness. The modified PTFE has good heat resistance, compression resistance and cold-current creep property resistance; compared with pure PTFE, the modified PTFE also has the advantages of better corrosion resistance, excellent electrical property, good airtightness, no adhesion or toxicity do not exist, and alloy can be used under higher temperature for a long time under the same load; in addition, the coefficient of sliding friction of an alloy gasket is extremely small, and the alloy gasket has certain mechanical toughness, so that the self-lubrication wear-resistant modified PTFE sealing material is extremely suitable for the field of sliding seal.
Description
Technical field
The present invention relates to the sealing material technical field, is a kind of modified ptfe self-lubricating abrasion-resistant sealing material.
Background technology
Polytetrafluoroethylene (PTFE) has excellent high-low temperature resistant, corrosion-resistant, ageing-resistant, high insulation, performance such as sticking; But because poor dimensional stability, heat conductivility is poor, hardness is low, easy to wear, especially under load, present bigger cold flow properties (creep), it is restricted in the application in fields such as machinery carrying, frictional wear and seal lubrication.Yet these deficiencies can be improved through the filling and the composite methods of PTFE resin and other material, thereby enlarge its range of application.If PTFE and stopping composition and elastomer composite, then the elasticity physical efficiency provides enough sealing tension force, to the wearing and tearing redeeming of PTFE sealring, thereby improves its sealing effectiveness.
Summary of the invention
The objective of the invention is to overcome the deficiency of prior art; Provide and to realize high-wearing feature, good resistance to compression and creep resistance, not too influence the long-lived sealing material of a kind of polyimide modified PTFE self-lubricating of material resistance to air loss, erosion resistance and machinability again.
Invention realizes through following technical scheme:
A kind of modified ptfe self-lubricating abrasion-resistant sealing material; Be to mix, cold pressing, sintering, extrude and typing is processed through overdrying by polytetrafluoroethylene (PTFE) and polyimide powder (PI); It is characterized in that: modified Teflon is tetrafluoroethylene and polyimide blend alloy, and its component and parts by weight are respectively:
100 parts of PTFE resinoids;
5～55 parts in polyetheretherketone powder;
0～3 part of pigment.
And described a kind of modified ptfe self-lubricating abrasion-resistant sealing material is characterized in that: described PTFE resinoid is selected from the PTFE suspension polymerization resin of 15～55 microns of median sizes.
And described a kind of modified ptfe self-lubricating abrasion-resistant sealing material is characterized in that: described imide-urethane powder is that median size is at the light yellow toner below 100 microns.
And described a kind of modified ptfe self-lubricating abrasion-resistant sealing material is characterized in that: described pigment is one or more of titanium white, chrome yellow, barba hispanica, cadmium red, cadmium yellow, zinc sulfide white, carbon black, red iron oxide, yellow oxide of iron.
Characteristics of the present invention are:
1. this modified ptfe self-lubricating abrasion-resistant sealing material has good thermotolerance, resistance to compression and anti-cold flow creep properties, compare with pure PTFE, under identical load, the alloy pad can be under higher temperature life-time service.
2. the long-lived sealing material of this modified ptfe self-lubricating has the low-down coefficient of sliding friction, and wear resisting property is excellent simultaneously, is highly suitable for the slipper seal field.
3. this modified ptfe self-lubricating abrasion-resistant sealing material; Compare with pure PTFE, have range of application widely, in mechanical industry, be used as bearing, piston-ring, guide ring, wear ring etc.; In the chemical industry as the sealing of corrosive medium transport pipe, the mechanical seal of pump etc.
4. this modified ptfe self-lubricating abrasion-resistant sealing material is two kinds of resin alloies, possesses the favorable mechanical processing characteristics, and setting process is easy, and its thickness is 1～4 millimeter.
Embodiment
The present invention further details through following examples, and following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.
Embodiment: 1 mm thick typing sheet material
PTFE 100kg
PI 40kg
Chrome yellow 0.2kg
PTFE resin, PI resin, chrome yellow are put into the high mixer mixing successively obtain mixed ingredients.Mixed ingredients is joined compression moulding in the mould, sinter blank then into, carry out the machinery typing at last.
Claims (5)
1. modified ptfe self-lubricating abrasion-resistant sealing material, it is characterized in that: modified Teflon is tetrafluoroethylene and polyimide blend alloy, and its component and parts by weight are respectively:
100 parts of PTFE resinoids;
5～55 parts in polyetheretherketone powder;
0～3 part of pigment.
2. a kind of modified ptfe self-lubricating abrasion-resistant sealing material according to claim 1 is characterized in that: described PTFE resinoid is selected from the PTFE suspension polymerization resin of 15～100 microns of median sizes.
3. a kind of modified ptfe self-lubricating abrasion-resistant sealing material according to claim 1 is characterized in that: described polyimide elastomerics end is that median size is at the light yellow toner below 100 microns.
4. a kind of modified ptfe self-lubricating abrasion-resistant sealing material according to claim 1 is characterized in that: described pigment is one or more of titanium white, chrome yellow, barba hispanica, cadmium red, cadmium yellow, zinc sulfide white, carbon black, red iron oxide, yellow oxide of iron.
5. modified ptfe self-lubricating abrasion-resistant sealing material is characterized in that: the sealing material be by tetrafluoroethylene and polyimide powder through overdrying mix, cold pressing, sintering, typing form, thickness is 1～4 millimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102019376A CN102719042A (en) | 2012-06-19 | 2012-06-19 | Self-lubrication wear-resistant modified PTFE (Poly Tetra Fluoro Ethylene) sealing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102019376A CN102719042A (en) | 2012-06-19 | 2012-06-19 | Self-lubrication wear-resistant modified PTFE (Poly Tetra Fluoro Ethylene) sealing material |
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| Publication Number | Publication Date |
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| CN102719042A true CN102719042A (en) | 2012-10-10 |
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| CN2012102019376A Pending CN102719042A (en) | 2012-06-19 | 2012-06-19 | Self-lubrication wear-resistant modified PTFE (Poly Tetra Fluoro Ethylene) sealing material |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738005A (en) * | 2014-01-20 | 2014-04-23 | 苏州新区特氟龙塑料制品厂 | Teflon steel plate |
| CN105462121A (en) * | 2016-01-04 | 2016-04-06 | 天津市天塑科技集团有限公司 | Preparation method of PTFE and PI blended alloy |
| CN107759935A (en) * | 2016-08-16 | 2018-03-06 | 覃诗龙 | A kind of modified Teflon airtight and watertight padding and preparation method thereof |
| CN110128768A (en) * | 2019-04-24 | 2019-08-16 | 镇江市营房塑电有限公司 | A kind of polytetrafluoroethylene sealing gasket piece |
| CN110183799A (en) * | 2019-05-08 | 2019-08-30 | 镇江市营房塑电有限公司 | A kind of gasket seal board and preparation method thereof |
| CN110933540A (en) * | 2019-12-09 | 2020-03-27 | 西安鼎蓝通信技术有限公司 | Noise reduction sealing ring suitable for sound equipment and preparation method thereof |
| WO2020089598A1 (en) * | 2018-10-30 | 2020-05-07 | Victrex Manufacturing Limited | Polymeric materials |
| CN113248920A (en) * | 2021-06-03 | 2021-08-13 | 燕山大学 | Polyimide self-lubricating composite material with low friction coefficient, low wear rate and long service life and preparation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102464845A (en) * | 2010-11-11 | 2012-05-23 | 天津市天塑科技集团有限公司技术中心 | Nano-silica-filled modified PTFE (Polytetrafluorethylene) resin |
-
2012
- 2012-06-19 CN CN2012102019376A patent/CN102719042A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102464845A (en) * | 2010-11-11 | 2012-05-23 | 天津市天塑科技集团有限公司技术中心 | Nano-silica-filled modified PTFE (Polytetrafluorethylene) resin |
Non-Patent Citations (2)
| Title |
|---|
| 《创新沈阳文集（A）》 20090831 王凯等 "PTFE/PI合金的热性能及机械性能研究" 第266-271页 1-5 , * |
| 王凯等: ""PTFE/PI合金的热性能及机械性能研究"", 《创新沈阳文集（A）》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103738005A (en) * | 2014-01-20 | 2014-04-23 | 苏州新区特氟龙塑料制品厂 | Teflon steel plate |
| CN105462121A (en) * | 2016-01-04 | 2016-04-06 | 天津市天塑科技集团有限公司 | Preparation method of PTFE and PI blended alloy |
| CN107759935A (en) * | 2016-08-16 | 2018-03-06 | 覃诗龙 | A kind of modified Teflon airtight and watertight padding and preparation method thereof |
| WO2020089598A1 (en) * | 2018-10-30 | 2020-05-07 | Victrex Manufacturing Limited | Polymeric materials |
| CN110128768A (en) * | 2019-04-24 | 2019-08-16 | 镇江市营房塑电有限公司 | A kind of polytetrafluoroethylene sealing gasket piece |
| CN110183799A (en) * | 2019-05-08 | 2019-08-30 | 镇江市营房塑电有限公司 | A kind of gasket seal board and preparation method thereof |
| CN110933540A (en) * | 2019-12-09 | 2020-03-27 | 西安鼎蓝通信技术有限公司 | Noise reduction sealing ring suitable for sound equipment and preparation method thereof |
| CN113248920A (en) * | 2021-06-03 | 2021-08-13 | 燕山大学 | Polyimide self-lubricating composite material with low friction coefficient, low wear rate and long service life and preparation method thereof |
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Address after: 300073, 52, West Lake village Avenue, Tianjin, Nankai District Applicant after: Technical Center of Tianjin Tiansu Science & Technology Group Co., Ltd. Address before: The 300384 Tianjin City Huayuan Industrial Zone Development Road six No. 6 Haitai green industry base building M7 Room 102 Applicant before: Technical Center of Tianjin Tiansu Science & Technology Group Co., Ltd. |
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Application publication date: 20121010 |