CN102477603A - High-purity and low-sulfur graphite yarn - Google Patents
High-purity and low-sulfur graphite yarn Download PDFInfo
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- CN102477603A CN102477603A CN2010105614016A CN201010561401A CN102477603A CN 102477603 A CN102477603 A CN 102477603A CN 2010105614016 A CN2010105614016 A CN 2010105614016A CN 201010561401 A CN201010561401 A CN 201010561401A CN 102477603 A CN102477603 A CN 102477603A
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Abstract
The invention relates to a high-purity and low-sulfur graphite yarn. A plurality of 0.5K carbon fibers are coated in a low-sulfur distensible graphite layer, and the low-sulfur distensible graphite layer and the 0.5K carbon fibers are integrally twisted into a rope form. Compared with the prior art, the high-purity and low-sulfur graphite yarn provided by the invention has higher high-temperature bearing capacity, and the bearable temperature is above 600 DEG C and below 3000 DEG C while the normal use temperature is within 600 to 2500 DEG C; the 0.5K carbon fibers serve as an intensification material in the graphite yarn, wherein the carbon content is 98%, the graphite carbon content is 99%, the sulphur content is 100ppm; and in the finished product, the carbon content is 98% and the sulphur content is 100ppm. The high-purity and low-sulfur graphite yarn disclosed by the invention can be applied to nuclear energy, nuclear power, marine oil, and other fields with special requirements, and can achieve a service life 10 to 15 times of that of the prior art based on experiment data provided overseas.
Description
Technical field
The present invention relates to a kind of graphite line, particularly a kind of high-purity low-sulfur graphite line.
Background technology
Graphite has the characteristic of high temperature resistant anti-strong acid and strong base, is best sealing material.When existing graphite material is used for field of sealing technology, adopting cotton yarn or glass fibre as reinforcement usually, carry out compoundly with the high-purity expansible graphite, be used for general quiet, movable sealing field, has been a much progress; Combine employed sealed environment to require to increase a stainless steel wire respectively in addition, or nickel wire, or aramid fiber etc.The sealing article of producing also can only be used in below 600 ℃; Actually can normally use or effectively use seal temperature between 150 ℃-250 ℃; The technical merit of present manufacturing graphite grazing product does not perform to resistant to elevated temperatures characteristic of graphite and ability ultimate attainment; Because the cotton yarn or the glass fibre that adopt have only played booster action as reinforcement, at high temperature promptly ablate ash, thereby increased the ash in the graphite grazing goods in the existing manufacturing technology; Reduced the carbon content of finished product, the refractory seals ability of the graphite grazing product that weakened greatly.This is because independent cotton yarn and glass fibre non-refractory forms ash and return the high-purity increase impurity component of composite graphite with it behind the chance high temperature, and the heat-resisting ability of graphite own is significantly reduced, and finally causes this product to lose sealing effectiveness fully.
Summary of the invention
Technical problem to be solved by this invention provides a kind of high-purity low-sulfur graphite line, can tolerate high temperature below 3000 ℃, and carbon content reaches 98%, and sulfur content is lower than 100ppm.
For solving the problems of the technologies described above, the technical scheme that the present invention adopted is: a kind of high-purity low-sulfur graphite line, be coated with many 0.5K carbon fibers in the low-sulfur expansible black lead layer, and the low-sulfur expansible black lead layer is twisted with the fingers into rope form with whole commentaries on classics of 0.5K carbon fiber.
Described 0.5K carbon fiber equidistance in the low-sulfur expansible black lead layer is arranged.
Change the commentaries on classics of twisting with the fingers and directly be 55-70 commentaries on classics/rice.
A kind of high-purity low-sulfur graphite line provided by the invention has compared with prior art improved the high temperature tolerance ability, and tolerable temperature is more than 600 ℃ below 3000 ℃, and normal serviceability temperature is between 600 ℃-2500 ℃.
Concrete parameter is following:
Strengthening material is that cotton yarn or glass fibre coat graphite outward in the prior art, and wherein cotton yarn or glass fibre carbon content are below 6%; Graphitic carbon content 99%, sulfur content 1200ppm; Carbon content is 85% in the finished product, sulfur content 1200ppm.
Strengthening material is the 0.5K carbon fiber among the present invention, and wherein 0.5K carbon fiber carbon content is 98%, graphitic carbon content 99%, sulfur content 100ppm; Carbon content is 98% in the finished product, sulfur content 100ppm.
The present invention can be used in the field that nuclear energy, nuclear power and offshore oil etc. have specific (special) requirements.According to the experimental data that abroad provides, be 10-15 times of prior art products the service life of product of the present invention.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
Fig. 1 is a sketch map of the present invention.
Fig. 2 is an overall structure sketch map of the present invention.
The specific embodiment
In Fig. 1, Fig. 2, a kind of high-purity low-sulfur graphite line is coated with many 0.5K carbon fibers 2 in the low-sulfur expansible black lead layer 1, and low-sulfur expansible black lead layer 1 is twisted with the fingers into rope form with 0.5K carbon fiber 2 whole commentaries on classics.
Described 0.5K carbon fiber 2 equidistance in low-sulfur expansible black lead layer 1 is arranged.
Change the commentaries on classics of twisting with the fingers and directly be 55-70 commentaries on classics/rice.
Production method of the present invention is divided into three steps: the one, and adopt scale 50 purpose carbon contents 99% above high purity graphite is carried out acidification with nitric acid, process low-sulfur expansible black lead layer 1.The 2nd, adopt 0.5K carbon fiber 2 6-13 root equidistance to arrange, with low-sulfur expansible black lead layer 1, carrying out mats formation up and down rolls into coiled material, and the 3rd, according to the line footpath of required product line, the requirement that line is heavy, be divided into 5g/m, 3g/m carries out equidistant sanction bar.The 0.5K carbon fiber line that contains setting in each little broadband coiled material behind the sanction bar coats wherein: the product bandwidth of 3g/m is at 13mm-15mm; 0.5K carbon fiber 7-9 root, the product bandwidth of 5g/m be at 18-20mm, 0.5K carbon fiber 11-13 root.At last each little broadband is divided into left-hand lay or right-laid, and confirms to change the sth. made by twisting direction according to the follow-up processing request of product, changeing the footpath is 1 inch 1.75 commentaries on classics, is equivalent to 55-70 commentaries on classics/rice.Product manufacture of the present invention is simple, is easy to routine operation, does not pollute, and brings into play the high temperature resistant function of graphite to greatest extent.
Claims (3)
1. high-purity low-sulfur graphite line is characterized in that: be coated with many 0.5K carbon fibers (2) in the low-sulfur expansible black lead layer (1), low-sulfur expansible black lead layer (1) is twisted with the fingers into rope form with whole commentaries on classics of 0.5K carbon fiber (2).
2. a kind of high-purity low-sulfur graphite line according to claim 1 is characterized in that: described 0.5K carbon fiber (2) equidistance in low-sulfur expansible black lead layer (1) is arranged.
3. a kind of high-purity low-sulfur graphite line according to claim 1 is characterized in that: change the commentaries on classics of twisting with the fingers and directly be 55-70 commentaries on classics/rice.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105614016A CN102477603A (en) | 2010-11-27 | 2010-11-27 | High-purity and low-sulfur graphite yarn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105614016A CN102477603A (en) | 2010-11-27 | 2010-11-27 | High-purity and low-sulfur graphite yarn |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102477603A true CN102477603A (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105614016A Pending CN102477603A (en) | 2010-11-27 | 2010-11-27 | High-purity and low-sulfur graphite yarn |
Country Status (1)
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| CN (1) | CN102477603A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842352A (en) * | 2012-08-24 | 2012-12-26 | 潍坊市宏宇电力设备防护有限公司 | Graphite line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663460Y (en) * | 2003-12-18 | 2004-12-15 | 赵晶玮 | Fibre reinforced graphitic thread |
| WO2010029829A1 (en) * | 2008-09-10 | 2010-03-18 | 日本ピラー工業株式会社 | Yarn |
| CN201864844U (en) * | 2010-11-27 | 2011-06-15 | 宜昌埃立特密封材料有限公司 | High-purity low-sulfur graphite yarn |
-
2010
- 2010-11-27 CN CN2010105614016A patent/CN102477603A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2663460Y (en) * | 2003-12-18 | 2004-12-15 | 赵晶玮 | Fibre reinforced graphitic thread |
| WO2010029829A1 (en) * | 2008-09-10 | 2010-03-18 | 日本ピラー工業株式会社 | Yarn |
| CN201864844U (en) * | 2010-11-27 | 2011-06-15 | 宜昌埃立特密封材料有限公司 | High-purity low-sulfur graphite yarn |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102842352A (en) * | 2012-08-24 | 2012-12-26 | 潍坊市宏宇电力设备防护有限公司 | Graphite line |
| CN102842352B (en) * | 2012-08-24 | 2016-01-06 | 潍坊市宏宇电力设备防护有限公司 | Graphite line |
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Application publication date: 20120530 |