CN1019681B - Expanded graphite and carbon fiber bar braided composite packing material - Google Patents
Expanded graphite and carbon fiber bar braided composite packing materialInfo
- Publication number
- CN1019681B CN1019681B CN 91106348 CN91106348A CN1019681B CN 1019681 B CN1019681 B CN 1019681B CN 91106348 CN91106348 CN 91106348 CN 91106348 A CN91106348 A CN 91106348A CN 1019681 B CN1019681 B CN 1019681B
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- expanded graphite
- fiber bar
- packing material
- braided composite
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 22
- 239000010439 graphite Substances 0.000 title claims abstract description 22
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 20
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 20
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 238000012856 packing Methods 0.000 title claims abstract description 18
- 239000000463 material Substances 0.000 title abstract description 9
- 239000002131 composite material Substances 0.000 title abstract description 8
- 150000001875 compounds Chemical class 0.000 claims description 2
- 238000006424 Flood reaction Methods 0.000 claims 2
- 238000009954 braiding Methods 0.000 claims 1
- 239000006185 dispersion Substances 0.000 claims 1
- 239000000945 filler Substances 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 abstract description 3
- 239000002253 acid Substances 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract 1
- 238000003672 processing method Methods 0.000 abstract 1
- 150000003839 salts Chemical class 0.000 abstract 1
- 239000010425 asbestos Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- -1 Polytetrafluoroethylene Polymers 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 238000003490 calendering Methods 0.000 description 1
- 230000000254 damaging effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- BFKJFAAPBSQJPD-UHFFFAOYSA-N tetrafluoroethene Chemical group FC(F)=C(F)F BFKJFAAPBSQJPD-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sealing Devices (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention provides a kind of Expanded graphite and carbon fiber bar braided composite packing material, be specially adapted to the valve under the harsh working conditions such as high low temperature, acid, alkali, salt and the stuffing box packing of pump.The advantage of its collection Expanded graphite and carbon fiber bar overcomes mutual shortcoming, and the processing method by special organically combines them, is woven into composite filling, and the comprehensive sealing performance of its filler is improved, and cheap, is easy to processing, and is easy to use.
Description
The present invention relates to a kind of Expanded graphite and carbon fiber bar braided composite packing material, be specially adapted to the valve under the harsh working conditions such as high low temperature, high pressure, acid, alkali salt and the packing seal of pump.
At present, be used for the gland sealed main material asbestos, teflon, carbon fiber bar and Expanded graphite etc. are arranged.Asbestos packing is because its comprehensive mechanical performance is lower, and metal is had corrosive action, human body had damaging effect, so progressively be eliminated; Polytetrafluoroethylene packing also is subjected to certain narrow limitation in the use because its heatproof degree is low; Carbon fiber bar is the comparatively desirable stuffing box packing that grew up in recent years, its intensity height, and high temperature resistant, corrosion-resistant, friction factor is little, selflubricating.But the compression rebound rate is low, costs an arm and a leg, and mostly is used under the comparatively harsh working condition; Expanded graphite also is the sealing material that just grew up in recent years.Because it has excellent sealing ability, so its application area is big, fast-growth, sealed industry is paid attention to.It mainly is that intensity is too low than carbon fiber bar, so be difficult for making braided packing.What use now mostly is the ring-type goods, is not easy to dismounting, because intensity is low, uses undesirable in motive sealing.
The invention provides a kind of Expanded graphite and carbon fiber bar braided composite packing material, its objective is the advantage of collection carbon fiber bar and Expanded graphite, overcome mutual shortcoming, they are organically combined, be woven into composite filling, its mechanical strength is increased, the compression rebound rate improves, corrosion-resistant, high-and low-temperature resistance, little, the selflubricating of friction factor, and cheap, be easy to processing, easy to use.
The present invention is achieved in that and earlier flexible graphite sheet material is cut into strip, then strip graphite is stacked up, and with knitting machine the carbon fiber bar cover is organized in the skin of strip graphite, and the formation skin is netted carbon fiber bar, and internal layer is the strand of Expanded graphite.Strand dipping tetrafluoroethylene emulsion.Again the multiplied yarn warp loom is woven into filler, last calendering formation.
Concrete structure of the present invention is provided by following embodiment and accompanying drawing.
Fig. 1 is Expanded graphite bar full pattern figure of the present invention
Fig. 2 is Expanded graphite of the present invention and carbon fiber bar composite strands full pattern figure
Fig. 3 is braided packing full pattern figure of the present invention
Fig. 1 is the full pattern figure that flexible graphite sheet material is cut into strip, and generally between the 0.2-0.5 millimeter, the width of bar is generally between the 2-3 millimeter for the thickness of sheet material; Figure two is compound back Expanded graphite and carbon fiber bar strand figure, and the skin of strand is netted carbon fiber bar, and internal layer is the Expanded graphite bar after the stack; Figure three is the filler full pattern figure after eight ingot knitting machines are woven with the stereotyped writing line, and sectional area is a square, and the tiny net on surface is exactly a carbon fiber bar.The way of available increase strand quantity satisfies the size in filler cross section.
Claims (4)
1, a kind of by Expanded graphite and the compounded braided packing that forms by the braiding of multiply strand of carbon fiber bar, it is characterized in that:
A. the compound of Expanded graphite and carbon fiber selected in braided packing for use.
B. the strand skin of braided packing is a carbon fiber, and internal layer is an Expanded graphite, and floods with fluororesin.
2, braided packing according to claim 1 is characterized in that outer field carbon fiber is netted.
3, braided packing according to claim 1 is characterized in that the Expanded graphite of internal layer is formed by stacking by multilayer, and its number of plies is the 3-8 layer.
4, braided packing according to claim 1 is characterized in that the fluororesin that floods is a polytetrafluoroethyldispersion dispersion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106348 CN1019681B (en) | 1991-03-12 | 1991-03-12 | Expanded graphite and carbon fiber bar braided composite packing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91106348 CN1019681B (en) | 1991-03-12 | 1991-03-12 | Expanded graphite and carbon fiber bar braided composite packing material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1056560A CN1056560A (en) | 1991-11-27 |
| CN1019681B true CN1019681B (en) | 1992-12-30 |
Family
ID=4907773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91106348 Expired CN1019681B (en) | 1991-03-12 | 1991-03-12 | Expanded graphite and carbon fiber bar braided composite packing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1019681B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0689322B2 (en) * | 1991-11-21 | 1994-11-09 | 日本ピラー工業株式会社 | Inflator gasket |
| US5540451A (en) * | 1993-11-02 | 1996-07-30 | Tokyo Electric Power Services Co., Ltd. | Composite sealing material |
| CN1052030C (en) * | 1994-03-31 | 2000-05-03 | 秦树南 | Process for production of compounded flexible graphite braided packing and products thereof |
| CN102206481A (en) * | 2011-05-23 | 2011-10-05 | 西峡县金方圆密封材料有限责任公司 | High-polymer fibre rust-resistant flexible graphite sealing packing |
| CN108019517B (en) * | 2016-10-31 | 2020-12-01 | 日本皮拉工业株式会社 | Sealing material composition and gland packing comprising the same |
| CN110375068B (en) * | 2019-07-25 | 2024-07-26 | 宁波信幸隆密封制品有限公司 | A strip-shaped graphite sealing ring and its processing technology and processing equipment |
-
1991
- 1991-03-12 CN CN 91106348 patent/CN1019681B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN1056560A (en) | 1991-11-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |