CN1563773A - Shaped helix tube made of carbon-carbon composite material - Google Patents
Shaped helix tube made of carbon-carbon composite material Download PDFInfo
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- CN1563773A CN1563773A CN 200410025950 CN200410025950A CN1563773A CN 1563773 A CN1563773 A CN 1563773A CN 200410025950 CN200410025950 CN 200410025950 CN 200410025950 A CN200410025950 A CN 200410025950A CN 1563773 A CN1563773 A CN 1563773A
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Abstract
The special spiral pipe of composite carbon/carbon material is prepared through the process including the following steps: bending spiral pipe blank with copper pipe of purity over 99.9%, winding carbon fiber fabric homogeneously onto the pipe blank back and forth, chemical vapor depositing, and finally smelting the copper pipe blank. The said process prepares special spiral pipe is composite carbon/carbon without needing any post-machining, is simple and low in cost, and makes it possible to prepare various hollow member with composite carbon/carbon material possessing complicated shape.
Description
Technical field
The present invention relates to the special-shaped volute of a kind of carbon/carbon composite.
Background technique
The carbon fiber reinforced carbon based composites is excellent heat structure---function integration advanced composite material, it combines the high-temperature behavior of raw material of wood-charcoal material and the mechanical property of composite material excellence, and its Main Feature has: friction ractor is stable, strength and stiffness height under the high temperature, anti-ablation, corrosion-resistant, dimensional stability is high, chemical inertness, endurance, anti-thermal shock, high conductivity, high thermal conductivity, low thermal coefficient of expansion and biocompatibility etc.Carbon/carbon composite is present unique composite material that can be used for 2800 ℃ of high temperature.And the intensity in the time of still keeping its room temperature under the high temperature, even also improve to some extent, this is unique material that can keep this specific character in the present engineering material.Carbon/carbon composite becomes the focus of people's research gradually in recent years, and is widely used in Aeronautics and Astronautics and civilian industry field.Yet the preparation of carbon/carbon composite product at present is confined to dish-type spare and cartridge type spare mostly, because carbon/carbon composite is applied to national defence fields such as Aeronautics and Astronautics more, preparation method's report of its complicated abnormal shape spare is very few.For the profiled piece of complexity, often adopt post-processing approach such as machining, cause the significant wastage of human and material resources, financial resources and time.
Summary of the invention
In order to overcome the shortcoming that prior art can not prepare carbon/carbon composite complicated abnormal shape spare, the invention provides the preparation method of the special-shaped volute of a kind of carbon/carbon composite, do not adopt post-processing approach such as machining just can directly prepare carbon/carbon composite abnormal shape volute.This preparation method is simple and practical, can prepare the hollow carbon/carbon composite member of complicated shape.
The technical solution adopted for the present invention to solve the technical problems is to adopt following method to prepare the special-shaped volute of carbon/carbon composite:
1) at first with purity greater than 99.9% copper pipe, bend to the spiral pipe by designing requirement;
2) 1K or 3K carbon fiber sheet are cut into the wide 30mm～50mm strip that is, soaked 6～8 hours in percent by volume is 3～5% polyvinylacetate solution, water temperature remains on 70～80 ℃;
3) with treated carbon fiber sheet on copper spiral pipe evenly, back and forth twine in turn, windings thickness is 5～8mm, twine the joint and tie up tightly with carbon fibre thread, then with polyvinyl acetate emulsion surperficial even brushing of the carbon fiber sheet that is twining;
4) this copper volute blank that is tied with carbon fiber sheet for preparing is placed in the baking oven dry 8～10 hours, temperature is 150～250 ℃;
5) copper pipe at the blank two ends that drying is good is clipped in respectively on two graphite electrodes of heat gradient CVI stove, carries out chemical vapor deposition, pressure 0.13MPa in the stove, and the feeding flow is 2～3m
3/ hr rock gas, the temperature of chemical vapor deposition stove should be raised to 800～900 ℃ by room temperature in 4～5 hours, deposit 20～30 hours, when being cooled to 300 ℃ with the speed of 100 ℃/hr then, cut off the electricity supply, and turned off rock gas, naturally cooled to room temperature;
6) the carbon/carbon composite volute that will deposit good band copper core is put into constant-temperature oven, and pressure 0.1MPa in the stove feeds argon shield, and argon flow amount is 0.5m
3/ hr rises to 1200～1300 ℃ with the warming velocity of 20～25 ℃/min with furnace temperature, is incubated 1～1.5 hour, and flow out inner copper pipe fusing back, with the stove cool to room temperature, promptly gets the carbon/carbon composite volute.
Described spiral pipe can also be NM other shapes of the present invention.
The present invention's advantage compared to existing technology is; Because adopted with the copper pipe is core, on the copper pipe base of have make shape shape, twine carbon fiber sheet, through chemical vapor deposition, the melting copper tube core prepares the special-shaped volute of carbon/carbon composite again, do not adopt post-processing approach such as machining just can directly prepare the special-shaped volute of carbon/carbon composite, this preparation method is simple and practical, and can prepare the hollow carbon/carbon composite member of complicated shape.
Embodiment
Below in conjunction with embodiment the present invention is described in further detail.
Embodiment 1: with internal diameter Φ 5mm, external diameter Φ 10mm long is 1m, and purity is greater than 99.9% copper pipe, and bending to pitch is 50mm, and diameter is 150mm, and height is the spiral pipe of 400mm.The 3K carbon fiber sheet is cut into wide 30mm strip, is 5% in percent by volume, and water temperature is to soak 6 hours in 80 ℃ the polyvinylacetate aqueous solution.With treated carbon fiber sheet on copper spiral pipe evenly, back and forth twine in turn, windings thickness is 5mm, twine the joint and tie up tightly with carbon fibre thread, then with polyvinyl acetate emulsion surperficial even brushing of the carbon fiber sheet that is twining.This copper volute blank that is tied with carbon fiber sheet for preparing is placed in the baking oven dry 10 hours, and temperature is 150 ℃.
The copper pipe at the carbon fiber sheet copper volute blank two ends that drying is good is clipped in respectively on two graphite electrodes of heat gradient CVI stove.In order to reduce contact resistance, in the slit of clamping, fill with the charcoal fiber fragment.Feed rock gas, its flow is 3m
3/ hr was raised to 900 ℃ with the chemical vapor deposition stove temperature by room temperature in 5 hours, pressure 0.13MPa in the stove under 900 ℃ of temperature, deposits 20 hours.When cooling to 300 ℃ with the speed of 100 ℃/hr then, cut off the electricity supply, turn off rock gas, product is with the stove cool to room temperature.The carbon/carbon composite volute that will deposit good band copper pipe core then is placed in the constant-temperature oven, and pressure 0.1MPa in the stove feeds argon shield, and argon flow amount is 0.5m
3/ hr rises to 1300 ℃ with the warming velocity of 25 ℃/min with furnace temperature, is incubated 1 hour, makes its inner copper pipe fusing, cool to room temperature subsequently.So just made the carbon/carbon composite volute.Its manufactured good are shown in Fig. 1 photo.
Embodiment 2: with internal diameter Φ 3mm, external diameter Φ 8mm long is 2m, and purity is greater than 99.9% copper pipe, and bending to pitch is 80mm, and diameter is 100mm, and height is the spiral pipe of 800mm.The 1K carbon fiber sheet is cut into wide 50mm strip, is 3% in percent by volume, and water temperature is to soak 8 hours in 70 ℃ the polyvinylacetate aqueous solution.With treated carbon fiber sheet on copper spiral pipe evenly, back and forth twine in turn, windings thickness is 8mm, twine the joint and tie up tightly with carbon fibre thread, then with polyvinyl acetate emulsion surperficial even brushing of the carbon fiber sheet that is twining.This copper volute blank that is tied with carbon fiber sheet for preparing is placed in the baking oven dry 8 hours, and temperature is 250 ℃.
The copper pipe at the carbon fiber sheet copper volute blank two ends that drying is good is clipped in respectively on two graphite electrodes of heat gradient CVI stove.In order to reduce contact resistance, in the slit of clamping, fill with the charcoal fiber fragment.Feed rock gas, its flow is 3m
3/ hr was raised to 800 ℃ with the chemical vapor deposition stove temperature by room temperature in 4 hours, pressure 0.13MPa in the stove under 800 ℃ of temperature, deposits 30 hours.When cooling to 300 ℃ with the speed of 100 ℃/hr then, cut off the electricity supply, turn off rock gas, product is with the stove cool to room temperature.The carbon/carbon composite volute that will deposit good band copper pipe core then is placed in the constant-temperature oven, and pressure 0.1MPa in the stove feeds argon shield, and argon flow amount is 0.5m
3/ hr is warming up to 1200 ℃ with the warming velocity of 20 ℃/min, is incubated 2 hours, makes its inner copper pipe fusing, cool to room temperature subsequently.So just made the carbon/carbon composite volute.
Claims (2)
1, the special-shaped volute of a kind of carbon/carbon composite is characterized in that adopting following method preparation:
1) at first with purity greater than 99.9% copper pipe, bend to the spiral pipe by designing requirement;
2) 1K or 3K carbon fiber sheet are cut into the wide 30mm～50mm strip that is, soaked 6～8 hours in percent by volume is 3～5% polyvinylacetate solution, water temperature remains on 70～80 ℃;
3) with treated carbon fiber sheet on copper spiral pipe evenly, back and forth twine in turn, windings thickness is 5～8mm, twine the joint and tie up tightly with carbon fibre thread, then with polyvinyl acetate emulsion surperficial even brushing of the carbon fiber sheet that is twining;
4) this copper volute blank that is tied with carbon fiber sheet for preparing is placed in the baking oven dry 8～10 hours, temperature is 150～250 ℃;
5) copper pipe at the blank two ends that drying is good is clipped in respectively on two graphite electrodes of heat gradient CVI stove, carries out chemical vapor deposition, pressure 0.13MPa in the stove, and the feeding flow is 2～3m
3/ hr rock gas, the temperature of chemical vapor deposition stove should be raised to 800～900 ℃ by room temperature in 4～5 hours, deposit 20～30 hours, when being cooled to 300 ℃ with the speed of 100 ℃/hr then, cut off the electricity supply, and turned off rock gas, naturally cooled to room temperature;
6) the carbon/carbon composite volute that will deposit good band copper core is put into constant-temperature oven, and pressure 0.1MPa in the stove feeds argon shield, and argon flow amount is 0.5m
3/ hr rises to 1200～1300 ℃ with the warming velocity of 20～25 ℃/min with furnace temperature, is incubated 1～1.5 hour, and flow out inner copper pipe fusing back, with the stove cool to room temperature, promptly gets the carbon/carbon composite volute.
2, the special-shaped volute of carbon/carbon composite according to claim 1, it is characterized in that: described spiral pipe can also be NM other shapes of the present invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025950 CN1254623C (en) | 2004-03-16 | 2004-03-16 | Shaped helix tube made of carbon-carbon composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410025950 CN1254623C (en) | 2004-03-16 | 2004-03-16 | Shaped helix tube made of carbon-carbon composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1563773A true CN1563773A (en) | 2005-01-12 |
| CN1254623C CN1254623C (en) | 2006-05-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410025950 Expired - Fee Related CN1254623C (en) | 2004-03-16 | 2004-03-16 | Shaped helix tube made of carbon-carbon composite material |
Country Status (1)
| Country | Link |
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| CN (1) | CN1254623C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418604A (en) * | 2013-08-21 | 2015-03-18 | 甘肃郝氏炭纤维有限公司 | Tubular-type carbon/carbon composite material quickly preparing method |
| CN108705785A (en) * | 2018-05-03 | 2018-10-26 | 航天特种材料及工艺技术研究所 | Composite material spiral pipe, forming die and forming process |
| CN111217617A (en) * | 2020-01-20 | 2020-06-02 | 烟台凯泊复合材料科技有限公司 | Ultrahigh-temperature large-scale complex carbon/carbon material component |
-
2004
- 2004-03-16 CN CN 200410025950 patent/CN1254623C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104418604A (en) * | 2013-08-21 | 2015-03-18 | 甘肃郝氏炭纤维有限公司 | Tubular-type carbon/carbon composite material quickly preparing method |
| CN108705785A (en) * | 2018-05-03 | 2018-10-26 | 航天特种材料及工艺技术研究所 | Composite material spiral pipe, forming die and forming process |
| CN111217617A (en) * | 2020-01-20 | 2020-06-02 | 烟台凯泊复合材料科技有限公司 | Ultrahigh-temperature large-scale complex carbon/carbon material component |
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| Publication number | Publication date |
|---|---|
| CN1254623C (en) | 2006-05-03 |
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