CN101182159A - Carbon foam ultrahigh-temperature hard insulating material and production method thereof - Google Patents
Carbon foam ultrahigh-temperature hard insulating material and production method thereof Download PDFInfo
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- CN101182159A CN101182159A CNA2007101146388A CN200710114638A CN101182159A CN 101182159 A CN101182159 A CN 101182159A CN A2007101146388 A CNA2007101146388 A CN A2007101146388A CN 200710114638 A CN200710114638 A CN 200710114638A CN 101182159 A CN101182159 A CN 101182159A
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Abstract
The invention discloses a carbon foam ultrahigh temperature hard heat insulation material and a production method thereof. The material is made of 11-18 weight portions of carbon powder, 30-44 portions of adhesive, 1-10 portions of zircon, 12-19 portions of oxide, 1-6 portions of expandable graphite, 15-20 portions of fiber, 10-15 portions of PCF powder, 5-10 portions of reused waste, 0.1-8 portions of coupling agent and 0.1-5 portions of activator, which are processed to be formed after the material mixing, the vacuum forming, the carbonization and the graphitization. The invention has the advantages of good heat insulation performance, long service life, electric energy saving performance, good environmental protection performance, simple production method and low cost. And the material can be made into hard special shaped insulation material with high functional characteristics to adapt to the requirements of various furnace types.
Description
Technical field
The invention belongs to High Temperature Furnaces Heating Apparatus heat-insulation and heat-preservation material technology field, especially relate to a kind of carbon foam ultrahigh-temperature hard insulating material and production method thereof.
Background technology
Along with the fast development of Chinese national economy, the production of novel material such as China's Wimet, silicon single crystal, high technology ceramics, high pure metal, superalloy, charcoal/charcoal are compound is also developed rapidly.
According to incompletely statistics, it is about more than 50,000 that China has multiple High Temperature Furnaces Heating Apparatuss such as sintering cemented carbide stove, monocrystaline silicon stove, vacuum smelting furnace, vacuum heat treatment furnace, gaseous phase deposition stove at present, and these High Temperature Furnaces Heating Apparatuss still generally adopt traditional " charcoal felt " to do lagging material at present.Because the charcoal felt exists that high temperature becomes fragile, work-ing life is low, polluted product, contaminate environment, power consumption is big, thermal field is unstable, soft, can not make many drawbacks such as abnormity, the needs that can not adapt to production development make that some hi-tech industries of China and import equipment need be from external high price import Carbon foam lagging materials.
And external the eighties initial stage the Carbon foam thermal insulation material that has been used for spacecraft, be generalized to and replace the charcoal felt to do lagging material on the industrial furnace.As Scottish " Ka Erkabai " company is the maximum Carbon foam manufacturer in Europe, tens countries such as products export the United States, Russia, day; And China's Carbon foam product still is in the development stage.
Summary of the invention
The objective of the invention is to improve the deficiency of prior art and improve that a kind of heat-proof quality is good, long service life, saves energy, good environmental protection, can make carbon foam ultrahigh-temperature hard insulating material that lagging material, production method are simple, cost is low and production method thereof that the hard abnormity adapts to the high functional performance of various type of furnace needs.
The object of the present invention is achieved like this, carbon foam ultrahigh-temperature hard insulating material is characterized in by weight percent being the powdered carbon of 11-18%, the binding agent of 30-44%, the zircon of 1-10%, the oxide compound of 12-19%, the expansible black lead of 1-6%, the fiber of 15-20%, the PCF powder of 10-15%, the reuse waste material of 5-10%, the coupling agent of 0.1-8%, the activator of 0.1-5% is made.
Described powdered carbon is one or both or the two or more any mixing in carbon black, refinery coke, pitch coke, the Graphite Powder 99.
Described binding agent is one or both mixing of syrup, Resins, epoxy.
Described oxide compound is one or both or the two or more any mixing in calcium oxide, rutile and the aluminium sesquioxide.
Described fiber is one or both mixing in regenerated fiber, the charcoal fiber.
Described reuse waste material is the product of this Carbon foam scrap products after fragmentation.
Described coupling agent is one or both mixing among KH550, the KH570.
Described activator is a methylcellulose gum.
In order to realize that further purpose of the present invention, carbon foam ultrahigh-temperature hard insulating material of the present invention are to adopt following steps to make:
A, starting material are prepared, and processing fiber length is 5-20mm, and block raw material pulverizing is the 50-5000 order;
B, batch mixing, the mixer rotating speed is transferred to rotating speed 50-2000r/min, earlier binding agent, promoting agent, coupling agent are mixed system 10-30min, add zircon, oxide compound, powdered carbon and expansible black lead then and mix system 1-20min, the mixture that adds PCF powder and reuse waste material again mixes system 10-50min, adds fiber at last and mixes system 1-50min;
C, vacuum forming are packed mixed material in the particular manufacturing craft into, again mould are put into shaper, seal temperature-gradient method behind the fastening bell:
20-100 ℃, be incubated 10-100 minute;
100-140 ℃, be incubated 5-100 minute;
When continuing to be warming up to 150-200 ℃, vacuumize moulding, be warming up to 160-300 ℃ again, be incubated 40-60 minute, depanning;
D, charing, temperature rise rate: 1-200 ℃/hour, maximum processing temperature: 1500 ℃, adopt nitrogen as shielding gas;
E, greying are carried out under the condition of 2000 ℃-2600 ℃ of temperature.
Compared with the prior art the present invention has following distinguishing feature and positively effect: the present invention adopts powdered carbon, binding agent, zircon, oxide compound, expansible black lead, fiber, the PCF powder, the reuse waste material, coupling agent and activator mix are made lagging material, substitute " charcoal felt " and " graphite felt " generally used at present, to adapt to China's monocrystaline silicon stove, the sintering cemented carbide stove, vacuum heat treatment furnace, the needs of various High Temperature Furnaces Heating Apparatuss such as gaseous phase deposition stove and import High Temperature Furnaces Heating Apparatus, realize the production domesticization of import high temperature insulating material, every kind of raw material among the present invention is good and cheap, aboundresources, with big multiple enterprises a large amount of charcoal fibers that adopt compare, because charcoal fibre resources shortage, cost an arm and a leg, significantly strengthened the cost of product, in addition, the reuse waste material that the present invention adopts has not only strengthened product performance, and has saved a large amount of raw material of wood-charcoal material resource and foreign exchange; Carbon foam ultrahigh-temperature lagging material high starting point of the present invention, cost is low, and is simple for process.
Technical characteristic of the present invention sees the following form:
| Sequence number | The performance title | Numerical value |
| 1 | Density (g/cm 3) | 0.12-0.20 |
| 2 | Porosity (%) | ＞85 (wherein perforate 80%) |
| 3 | Thermal conductivity (normal temperature) W/m.K | 0.09-0.142 |
| 4 | 25 ℃-2000 ℃ of thermal expansivity | 3×10 -6 |
| 5 | Resistivity (Ω .cm) | 0.7 |
| 6 | Ultimate compression strength (MPa) | 0.7-0.8 |
| 7 | Bending strength (MPa) | 0.15-0.6 |
| 8 | Working conditions | Maximum operating temperature: 2800 ℃, working medium: vacuum or inert atmosphere |
| 9 | Ash content | ＜0.1-0.02％ |
Practical function (comparing) with the charcoal felt
| Sequence number | Practical characteristic | The charcoal felt | This foam carbon material |
| 1 | Thermal insulation | Better | Good |
| 2 | Energy consumption | The energy consumption height | Energy consumption low (than charcoal felt economize on electricity about 30%) |
| 3 | Work-ing life (power increasing degree＞40% o'clock replacing) | ＜five months | ＞17 months |
| 4 | Anti-permeability | Can not be impermeable | Impermeable |
| 5 | Environmental protection characteristic | The staple fibre dust pollution | Pollution-free |
| 6 | Material | Soft | Hard |
| 7 | Formability | Can not make special-shaped products | Can make abnormity, satisfy of the requirement of the various type of furnaces various geometrical shapies |
Together external Carbon foam property comparison:
| Material category | Density (g/cm 3) | Thermal conductivity (W/m.K) | Ultimate compression strength (MPa) | Porosity (%) |
| This material | 0.12-0.20 | 0.09-0.142 | 0.7-0.8 | ＞85 |
| Scotland | 0.14-0.19 | 0.18-0.26 | 0.2-0.74 | ＞85 |
| BK-900 (USSR (Union of Soviet Socialist Republics)) | 0.12-0.20 | 0.63(KJ/m.h℃) | 1.2-3.0 | ＞80 |
Embodiment:
Embodiment 1, carbon foam ultrahigh-temperature hard insulating material, be to be the powdered carbon of 11-18% by weight percent, the binding agent of 30-44%, the zircon of 1-10%, the oxide compound of 12-19%, the expansible black lead of 1-6%, the fiber of 15-20%, the PCF powder of 10-15%, the reuse waste material of 5-10%, the coupling agent of 0.1-8%, the activator of 0.1-5% is formed, powdered carbon is a carbon black, refinery coke, pitch coke, in the Graphite Powder 99 one or both or two or more any mixing, binding agent is a syrup, one or both mixing of Resins, epoxy, oxide compound is a calcium oxide, in rutile and the aluminium sesquioxide one or both or two or more any mixing, fiber is a regenerated fiber, one or both mixing in the charcoal fiber, the reuse waste material is the product of this Carbon foam scrap products after fragmentation, coupling agent is KH550, one or both mixing among the KH570, activator is a methylcellulose gum, is that step is made in accordance with the following methods: starting material are prepared, and processing fiber length is 5-20mm, block raw material pulverizing is the 50-5000 order, and block raw material comprises refinery coke, the returns of drop table Jiao and calcium oxide and zircon; Batch mixing, the mixer rotating speed is transferred to rotating speed 50-2000r/min, earlier binding agent, promoting agent, coupling agent are mixed system 10-30min, add zircon, oxide compound and expansible black lead then and mix system 1-20min, the mixture that adds PCF powder and returns again mixes system 10-50min, adds fiber at last and mixes system 1-50min; Vacuum forming, mixed material is packed in the mould, mould is to form according to the geometrical shape of product and size design, the structure of mould is same as the prior art, again mould is put into shaper, shaper is to be combined by conventional vacuum stove and vacuum tank, seal behind the fastening bell temperature-gradient method: 20-100 ℃, be incubated 10-100 minute, 100-140 ℃, be incubated 5-100 minute, when continuing then to be warming up to 150-200 ℃, vacuumize moulding, be warming up to 160-300 ℃ again, be incubated 40-60 minute, depanning; Charing, temperature rise rate are 1-200 ℃/hour, maximum processing temperature: 1500 ℃, adopt nitrogen as shielding gas; Greying is carried out under the condition of 2000 ℃-2600 ℃ of temperature.
Present embodiment is to adopt carbon black and petroleum coke mixtures 14kg, binding agent syrup 30kg, the coupling agent KH550 of 1kg, activator methylcellulose gum 1kg, zircon 5kg, calcium oxide and rutile mixture 15kg, expansible black lead 4kg, regenerated fiber and charcoal fibre blend 15kg, PCF powder 10kg, reuse waste material 5kg is mixed and made into; Be that at first processing fiber length is 5-20mm, block raw material pulverizing is the 50-5000 order, with ready starting material, good by prescription requirement weighing, the mixer rotating speed is transferred to 800 rev/mins, add carbon black, refinery coke, syrup, coupling agent KH550, activator methylcellulose gum earlier and mix system 20min in order, add zircon, calcium oxide and rutile and mix system 20min, the mixture, the reuse waste material that add PCF powder and expansible black lead mix system 10min, add the regenerated fiber fiber and mix 20min; The above-mentioned material make that mixes is packed in the mould, mould is put in the shaper again, the locking bell is checked bell sealing situation; heat up 50 ℃ and be incubated 20min, 100 ℃ of insulation 50min, 140 ℃ of insulation 30min; be warming up to 170 ℃; vacuumize moulding, vacuum tightness is-0.1MPa to solidify at 180-200 ℃ of insulation 20min; depanning; nitrogen protection is used in charing then during charing, from room temperature to 650 ℃; temperature rise rate is 50 ℃/h; 650-1200 ℃, 100 ℃/h, lower the temperature with stove; greying then; use argon shield during greying, treatment temp 2200-2400 ℃, get product of the present invention.
Embodiment 2, carbon foam ultrahigh-temperature hard insulating material, powdered carbon by 8kg, the syrup of 35kg, the zircon of 10kg, the oxide compound of 15kg, the expansible black lead of 2kg, the regenerated fiber of 15kg, the PCF powder of 10kg, the reuse waste material of 5kg, 0.5kg coupling agent, 0.5kg activator make, powdered carbon is a carbon black, refinery coke, pitch coke, the mixture of Graphite Powder 99, oxide compound are calcium oxide, the mixture of rutile and aluminium sesquioxide, the reuse waste material is the product of this Carbon foam scrap products after fragmentation, coupling agent is KH550, two kinds of mixing of KH570, activator is a methylcellulose gum, above raw material is finished according to same step and technology among the embodiment 1.Resulting foam carbon material heat-proof quality is stable, and quality is even, and intensity is good.
Embodiment 3, carbon foam ultrahigh-temperature hard insulating material, by the carbon black of 15kg, the Resins, epoxy of 33kg and syrup mixture, the zircon of 2kg, the rutile of 12kg, the expansible black lead of 3kg, the charcoal fiber of 15kg, the PCF powder of 10kg, the reuse waste material of 5kg, the coupling agent of 2kg, the activator of 3kg is made, and the reuse waste material is the product of this Carbon foam scrap products after fragmentation, coupling agent is KH570, activator is a methylcellulose gum, and above raw material is finished according to same step and technology among the embodiment 1, and resulting foam carbon material heat-proof quality is stable, quality is even, and intensity is good.
Claims (9)
1. carbon foam ultrahigh-temperature hard insulating material, it is characterized in that by weight percent being the powdered carbon of 11-18%, the binding agent of 30-44%, the zircon of 1-10%, the oxide compound of 12-19%, the expansible black lead of 1-6%, the fiber of 15-20%, the PCF powder of 10-15%, the reuse waste material of 5-10%, the coupling agent of 0.1-8%, the activator of 0.1-5% is made.
2. carbon foam ultrahigh-temperature hard insulating material according to claim 1 is characterized in that described powdered carbon is one or both or the two or more any mixing in carbon black, refinery coke, pitch coke, the Graphite Powder 99.
3. carbon foam ultrahigh-temperature hard insulating material according to claim 1 is characterized in that described binding agent is one or both mixing of syrup, Resins, epoxy.
4. carbon foam ultrahigh-temperature hard insulating material according to claim 1 is characterized in that described oxide compound is one or both or the two or more any mixing in calcium oxide, rutile and the aluminium sesquioxide.
5. carbon foam ultrahigh-temperature hard insulating material according to claim 1 is characterized in that described fiber is one or both mixing in regenerated fiber, the charcoal fiber.
6. carbon foam ultrahigh-temperature hard insulating material according to claim 1 is characterized in that described reuse waste material is the product of this Carbon foam scrap products after fragmentation.
7. carbon foam ultrahigh-temperature hard insulating material according to claim 1 is characterized in that described coupling agent is one or both mixing among KH550, the KH570.
8. carbon foam ultrahigh-temperature hard insulating material according to claim 1 is characterized in that described activator is a methylcellulose gum.
9. the production method of the described carbon foam ultrahigh-temperature hard insulating material of claim 1 is characterized in that this method may further comprise the steps:
A, starting material are prepared, and processing fiber length is 5-20mm, and block raw material pulverizing is the 50-5000 order;
B, batch mixing, the mixer rotating speed is transferred to rotating speed 50-2000r/min, earlier binding agent, promoting agent, coupling agent are mixed system 10-30min, add zircon, oxide compound, powdered carbon and expansible black lead then and mix system 1-20min, the mixture that adds PCF powder and reuse waste material again mixes system 10-50min, adds fiber at last and mixes system 1-50min;
C, vacuum forming are packed mixed material in the particular manufacturing craft into, again mould are put into shaper, seal temperature-gradient method behind the fastening bell:
20-100 ℃, be incubated 10-100 minute;
100-140 ℃, be incubated 5-100 minute;
When continuing to be warming up to 150-200 ℃, vacuumize moulding, be warming up to 160-300 ℃ again, be incubated 40-60 minute, depanning;
D, charing, temperature rise rate: 1-200 ℃/hour, maximum processing temperature: 1500 ℃, adopt nitrogen as shielding gas;
E, greying are carried out under the condition of 2000 ℃-2600 ℃ of temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CNA2007101146388A CN101182159A (en) | 2007-11-16 | 2007-11-16 | Carbon foam ultrahigh-temperature hard insulating material and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101146388A CN101182159A (en) | 2007-11-16 | 2007-11-16 | Carbon foam ultrahigh-temperature hard insulating material and production method thereof |
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| CN101182159A true CN101182159A (en) | 2008-05-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691293B (en) * | 2009-09-11 | 2012-08-22 | 哈尔滨工业大学 | Method for preparing heat-insulation materials from nano-silica filled non-graphitized carbon foam |
| CN113816741A (en) * | 2021-09-18 | 2021-12-21 | 邯郸市高精新材料科技有限公司 | High-strength graphite product, preparation method and application |
-
2007
- 2007-11-16 CN CNA2007101146388A patent/CN101182159A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101691293B (en) * | 2009-09-11 | 2012-08-22 | 哈尔滨工业大学 | Method for preparing heat-insulation materials from nano-silica filled non-graphitized carbon foam |
| CN113816741A (en) * | 2021-09-18 | 2021-12-21 | 邯郸市高精新材料科技有限公司 | High-strength graphite product, preparation method and application |
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Open date: 20080521 |