CN103571111A - Polytetrafluoroethylene sealing gasket and preparation method thereof - Google Patents
Polytetrafluoroethylene sealing gasket and preparation method thereof Download PDFInfo
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- CN103571111A CN103571111A CN201210254227.XA CN201210254227A CN103571111A CN 103571111 A CN103571111 A CN 103571111A CN 201210254227 A CN201210254227 A CN 201210254227A CN 103571111 A CN103571111 A CN 103571111A
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Abstract
The invention discloses a polytetrafluoroethylene sealing gasket and a preparation method thereof. The polytetrafluoroethylene sealing gasket disclosed by the invention is composed of the following components in parts by weight: 100 parts of polytetrafluoroethylene, 18-28 parts of glass fibre, 6-10 parts of aramid 1313 fibre, 6-10 parts of aramid 1414 fibre, 1-3 parts of tricaprylyl titanium isopropoxide, 3-5 parts of molybdenum disulfide, 6-12 parts of bronze powder, and 2-4 parts of graphite. The preparation method disclosed by the invention comprises the following steps of: uniformly stirring and mixing various raw materials, putting the raw materials into a mould, and pressurizing at 10-15 Mpa; sintering at 380-390 DEG C; keeping constant temperature for 2-4 h; secondarily pressurizing at 8-15 Mpa; and naturally cooling and sizing. The polytetrafluoroethylene sealing gasket disclosed by the invention has the advantages of being higher compression strength, wearable, good in heat conductivity, low in heat expansion and the like; in addition, due to the internal multidirectional fibre structure, the polytetrafluoroethylene sealing gasket has strong chemical resistance performance and can be reliably sealed for a long time.
Description
Technical field
The present invention relates to a kind of gasket seal and preparation method thereof, relate in particular to a kind of polytetrafluoroethylene sealing gasket sheet and preparation method thereof.
Background technology
Gasket seal, be a kind of for machinery, equipment, pipeline so long as to have the place of fluid be exactly the sealing spare part of use, use inside and outside, the material sealing.Gasket seal is with metal or nonmetal tabular material, and through cutting, the techniques such as punching press or cutting are made, for being tightly connected between pipeline, and being tightly connected between the parts of machinery equipment and parts.By material, can be divided into metallic packing and nonmetal gasket seal.Metal have copper backing, stainless steel gasket, iron gasket, an aluminium backing etc.Nonmetallic have asbestos gasket, non-asbestos gasket, paper gasket, a rubber sheet gasket etc.
(Polytetrafluoroethene, english abbreviation is PTFE to tetrafluoroethylene, (being commonly called as " King "), trade name
various places are different for this trade mark Chinese translation: China's Mainland is translated into Teflon
hong Kong is translated into Teflon
taiwan is translated into Teflon
), the product of this material is generally referred to as work " non-sticky metallic coating "; It is a kind of synthetic macromolecular material that has used fluorine to replace all hydrogen atoms in polyethylene.This material has the feature of antiacid alkali resistant, anti-various organic solvents, is dissolved in hardly all solvents.Meanwhile, tetrafluoroethylene has resistant to elevated temperatures feature, and its frictional coefficient is extremely low, so after can making lubrication, also become the desirable coating of non-stick cooker and water pipe internal layer.
Tetrafluoroethylene has outstanding excellent comprehensive performance, high temperature resistant, corrosion-resistant, sticky, self-lubricating, good dielectric properties, very low frictional coefficient.As engineering plastics, can be made into polyfluortetraethylene pipe, rod, band, plate, film etc., be generally applied to corrosion resistant pipeline, container, pump, valve and radar processed that performance requriements is higher, high frequency Communication Equipment, radio component parts etc.
Summary of the invention
For above shortcomings in prior art, one of technical problem to be solved by this invention is to provide a kind of polytetrafluoroethylene sealing gasket sheet.
Two of technical problem to be solved by this invention is to provide a kind of preparation method of polytetrafluoroethylene sealing gasket sheet.
Technical problem to be solved by this invention, is achieved by the following technical solution:
A sheet, consists of by weight following component: 100 parts of tetrafluoroethylene, glass fibre 18-28 part; aramid fiber 1313 6-10 part, Fanglun l414 fiber 6-10 part, three capryloyl isopropyl titanate 1-3 parts; molybdenumdisulphide 3-5 part, bronze powder 6-12 part, graphite 2-4 part.
Polytetrafluoroethylene sealing gasket sheet of the present invention, is comprised of following step:
(1) each raw material stirring is mixed, pack in mould and pressurize, pressure 10-15Mpa;
(2) sintering, sintering temperature 380-390 ℃; Constant temperature keeps 2-4 hour again;
(3) secondary pressurized is processed, and pressure is 8-15Mpa;
(4) naturally cooling sizing.
Polytetrafluoroethylene sealing gasket sheet of the present invention, employing inorganics is weighting agent, and it is evenly dissolved in tetrafluoroethylene raw material and is formed through deep processing, compares and has higher compressive strength with pure tetrafluoroethylene, wear-resisting, the advantage such as heat conduction good, thermal expansion minimizing; Inner multidirectional fibrous texture, makes this product have extremely strong resist chemical performance, does not have cold flow and creep, can keep for a long time reliable sealing.This backing plate weighting agent is inorganics, does not contain any binding agent, can not produce adhesion with trim, Reusability on same trim.Easily cutting, can cut out by mechanical or manual, is convenient to install.There is not problem of aging, can prolonged preservation.Applicable temperature :-180 ℃ to 250 ℃, Applicable media PH scope 0-14.
Embodiment
By embodiment, the invention will be further described, but the present invention is not limited by following examples.
Embodiment 1
Take: 100 kilograms of tetrafluoroethylene, 23 kilograms, glass fibre, 8 kilograms of aramid fiber 1313s, 8 kilograms of Fanglun l414 fibers, three 2 kilograms of capryloyl isopropyl titanates, 4 kilograms of molybdenumdisulphide, 9 kilograms of bronze powders, 3 kilograms, graphite.
(1) above-mentioned each raw material stirring is mixed, pack in mould and pressurize, pressure 12Mpa;
(2) sintering, 385 ℃ of sintering temperatures; Constant temperature keeps 3 hours again;
(3) secondary pressurized is processed, and pressure is 13Mpa;
(4) naturally cooling sizing, can make polytetrafluoroethylene sealing gasket sheet of the present invention.
After tested:
Draw high intensity 21.5MPa;
Elongation at break 215%;
Shock strength 25.5KJ/m;
Flexural strength 29MPa;
Abrasion 3.8mm
3.(load 250N, linear velocity 2m/s, 3 minutes time)
Polytetrafluoroethylene sealing gasket sheet of the present invention, employing inorganics is weighting agent, and it is evenly dissolved in tetrafluoroethylene raw material and is formed through deep processing, compares and has higher compressive strength with pure tetrafluoroethylene, wear-resisting, the advantage such as heat conduction good, thermal expansion minimizing; Inner multidirectional fibrous texture, makes this product have extremely strong resist chemical performance, does not have cold flow and creep, can keep for a long time reliable sealing.This backing plate weighting agent is inorganics, does not contain any binding agent, can not produce adhesion with trim, Reusability on same trim.Easily cutting, can cut out by mechanical or manual, is convenient to install.There is not problem of aging, can prolonged preservation.Applicable temperature :-180 ℃ to 250 ℃, Applicable media PH scope 0-14.
The above; it is only the specific embodiment of the present invention; but protection scope of the present invention is not limited to this; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; the variation that can expect without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (2)
1. a polytetrafluoroethylene sealing gasket sheet; it is characterized in that; by following component, formed by weight: 100 parts of tetrafluoroethylene; glass fibre 18-28 part, aramid fiber 1313 6-10 part, Fanglun l414 fiber 6-10 part; three capryloyl isopropyl titanate 1-3 parts; molybdenumdisulphide 3-5 part, bronze powder 6-12 part, graphite 2-4 part.
2. the preparation method of polytetrafluoroethylene sealing gasket sheet as claimed in claim 1, is characterized in that, following step, consists of:
(1) each raw material stirring is mixed, pack in mould and pressurize, pressure 10-15Mpa;
(2) sintering, sintering temperature 380-390 ℃; Constant temperature keeps 2-4 hour again;
(3) secondary pressurized is processed, and pressure is 8-15Mpa;
(4) naturally cooling sizing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254227.XA CN103571111A (en) | 2012-07-22 | 2012-07-22 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210254227.XA CN103571111A (en) | 2012-07-22 | 2012-07-22 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
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| CN103571111A true CN103571111A (en) | 2014-02-12 |
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| CN201210254227.XA Pending CN103571111A (en) | 2012-07-22 | 2012-07-22 | Polytetrafluoroethylene sealing gasket and preparation method thereof |
Country Status (1)
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650514A (en) * | 2015-03-24 | 2015-05-27 | 苏州新区华士达工程塑胶有限公司 | Novel polytetrafluoroethylene gasket material |
| CN104829996A (en) * | 2015-04-11 | 2015-08-12 | 安徽中威光电材料有限公司 | Teflon-based modified glass fiber doped heat dissipation material for LED light source and preparation method thereof |
| CN104829987A (en) * | 2015-04-11 | 2015-08-12 | 安徽中威光电材料有限公司 | Teflon-based spherical silver-coated copper powder-doped heat radiation material used for LED light source and preparation method thereof |
| CN105171956A (en) * | 2015-09-10 | 2015-12-23 | 湖州格尔泰斯环保技术有限公司 | Production method of polytef regeneration straps |
| CN107459748A (en) * | 2017-09-05 | 2017-12-12 | 镇江春环密封件集团有限公司 | A kind of manufacture method of teflon gasket |
| CN107474452A (en) * | 2017-09-22 | 2017-12-15 | 南京肯特复合材料股份有限公司 | High heat conduction rotating shaft sealing ring PTFE resin composite and preparation method thereof |
| CN107542932A (en) * | 2017-09-26 | 2018-01-05 | 镇江市星耀智能装备有限公司 | A kind of good sealing plate of cold flow properties |
| CN107586423A (en) * | 2017-09-05 | 2018-01-16 | 镇江春环密封件集团有限公司 | A kind of teflon gasket material |
| CN107674351A (en) * | 2017-09-22 | 2018-02-09 | 南京肯特复合材料股份有限公司 | Wear-resisting dust-free area sealing strip PTFE resin composite and preparation method thereof |
| CN108639159A (en) * | 2018-04-24 | 2018-10-12 | 长安大学 | A kind of hood and preparation method thereof |
| CN108943779A (en) * | 2018-08-27 | 2018-12-07 | 四川大学 | A kind of preparation method of high filler loading PTFE composite membrane material |
| CN109181178A (en) * | 2018-08-27 | 2019-01-11 | 四川大学 | A kind of preparation method of high thermal conductivity PTFE composite membrane material |
| CN109385030A (en) * | 2018-10-30 | 2019-02-26 | 江苏亿超工程塑料有限公司 | A kind of bolted flange joints gasket seal and preparation method thereof |
| CN115991915A (en) * | 2023-03-22 | 2023-04-21 | 成都俊马密封科技股份有限公司 | High-performance sealing gasket containing modified composite fibers and preparation method thereof |
-
2012
- 2012-07-22 CN CN201210254227.XA patent/CN103571111A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104650514A (en) * | 2015-03-24 | 2015-05-27 | 苏州新区华士达工程塑胶有限公司 | Novel polytetrafluoroethylene gasket material |
| CN104829996A (en) * | 2015-04-11 | 2015-08-12 | 安徽中威光电材料有限公司 | Teflon-based modified glass fiber doped heat dissipation material for LED light source and preparation method thereof |
| CN104829987A (en) * | 2015-04-11 | 2015-08-12 | 安徽中威光电材料有限公司 | Teflon-based spherical silver-coated copper powder-doped heat radiation material used for LED light source and preparation method thereof |
| CN105171956A (en) * | 2015-09-10 | 2015-12-23 | 湖州格尔泰斯环保技术有限公司 | Production method of polytef regeneration straps |
| CN107586423A (en) * | 2017-09-05 | 2018-01-16 | 镇江春环密封件集团有限公司 | A kind of teflon gasket material |
| CN107459748A (en) * | 2017-09-05 | 2017-12-12 | 镇江春环密封件集团有限公司 | A kind of manufacture method of teflon gasket |
| CN107674351A (en) * | 2017-09-22 | 2018-02-09 | 南京肯特复合材料股份有限公司 | Wear-resisting dust-free area sealing strip PTFE resin composite and preparation method thereof |
| CN107474452A (en) * | 2017-09-22 | 2017-12-15 | 南京肯特复合材料股份有限公司 | High heat conduction rotating shaft sealing ring PTFE resin composite and preparation method thereof |
| CN107542932A (en) * | 2017-09-26 | 2018-01-05 | 镇江市星耀智能装备有限公司 | A kind of good sealing plate of cold flow properties |
| CN108639159A (en) * | 2018-04-24 | 2018-10-12 | 长安大学 | A kind of hood and preparation method thereof |
| CN108639159B (en) * | 2018-04-24 | 2020-10-30 | 长安大学 | Engine cover |
| CN108943779A (en) * | 2018-08-27 | 2018-12-07 | 四川大学 | A kind of preparation method of high filler loading PTFE composite membrane material |
| CN109181178A (en) * | 2018-08-27 | 2019-01-11 | 四川大学 | A kind of preparation method of high thermal conductivity PTFE composite membrane material |
| CN109181178B (en) * | 2018-08-27 | 2021-05-07 | 四川大学 | Preparation method of high-thermal-conductivity polytetrafluoroethylene composite film material |
| CN109385030A (en) * | 2018-10-30 | 2019-02-26 | 江苏亿超工程塑料有限公司 | A kind of bolted flange joints gasket seal and preparation method thereof |
| CN115991915A (en) * | 2023-03-22 | 2023-04-21 | 成都俊马密封科技股份有限公司 | High-performance sealing gasket containing modified composite fibers and preparation method thereof |
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Application publication date: 20140212 |