CN104891950B - A kind of hard carbon fibre thermal-insulation plate and preparation method thereof - Google Patents
A kind of hard carbon fibre thermal-insulation plate and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a kind of hard carbon fibre thermal-insulation plate and preparation method thereof, the preparation method includes：Base substrate vacuum filtration molding, the different carbon fiber serosity of two groups of vacuum filtration form base substrate；Wherein, two groups of different carbon fiber serosity form the bottom and top of base substrate respectively；Base substrate after sucking filtration is heated to 180 300 DEG C with the heating rate of 0.1 5 DEG C/min by base substrate curing molding；Base substrate charing process；Billet surface process；Base substrate high-temperature process, is prepared into hard carbon fibre thermal-insulation plate.A kind of hard carbon fibre thermal-insulation plate of the present invention and preparation method thereof, preparation process is simple, highlight heterogeneity phantom requirement in stove, and the performance advantage of different classes of carbon fiber is combined, it is widely used in the stoves such as solar energy crystal growing furnace, high temperature heat treatment furnace, ceramic sintering furnace, extraordinary atmosphere high temperature furnace.
Description
Technical field
The present invention relates to carbon-fiber heat-insulation material preparing technical field, and in particular to a kind of to give birth to for solar energy crystal
The hard carbon fiber heat insulation used under the conditions of high temperature such as long stove, high temperature heat treatment furnace, ceramic sintering furnace, extraordinary atmosphere high temperature furnace is protected
Warm plate and preparation method thereof.
Background technology
China possesses sintering cemented carbide stove, monocrystaline silicon stove, polycrystalline ingot furnace, vacuum smelting furnace, vacuum heat treatment furnace, gas
Various high temperature furnaces such as phase cvd furnace at least more than 100,000, these high temperature furnaces at present greatly still generally using it is traditional every
Hot insulation material.As traditional heat-insulating heat-preserving material is difficult to make slim thermal insulation layer, body of heater volume is caused to increase, so that difficult
To meet more than 2000 DEG C of demand, and there is many drawbacks such as the corrosive power of resistance to atmosphere is poor, thermal field is unstable, therefore develop one
Plant heat preservation and insulation good, high temperature resistant, free from admixture pollution, corrosion resistant heat-insulating heat-preserving material is imperative, and carbon fiber heat insulation
Insulation material just has These characteristics, and that what is stood in the breach becomes the first-selection of high-temperature heat insulation heat insulating material.
At present, domestic carbon-fiber heat-insulation material is typically prepared using laminating technology, its globality poor, easily layering etc.
Shortcoming.In recent years, country's vacuum filtration method of having reported for work prepared carbon-fiber heat-insulation material, such as Chinese patent
200810011610.6 disclose a kind of method for preparing rigid carbon-fiber heat-insulation material, the method by ground carbon fiber with
Binding agent and dispersant solution are sufficiently mixed, Jing vacuum filtrations or compression molding.Then preform is carried out into non-fusible, carbonization
Process and be obtained.This method process is simple, but dispersion is complicated, and the carbon fiber big to draw ratio is difficult to disperse, and carbon fiber
It is meticulous, cause vacuum filtration system easily to block, solution is difficult to drain, and product can be excessively fluffy, thus carbon fiber lapped bad,
The easy dry linting of product.And for example Chinese patent 201310489217.9 discloses a kind of side for preparing heat-preservation hard composite carbon fiber felt
Method, the method by carbon fiber vacuum filtration formable layer, be combined viscose base carbon fibre felt or polyacrylonitrile-based carbon fibre acupuncture carpet veneer,
Soak binding agent and acupuncture and coat upper surface process layer, molding and post-treating and other steps and prepare.This method considers high temperature face
With the different structure designs in low temperature face, complex process, though have acupuncture but as two kinds of carbon fiber basketries and density are different,
Still suffer from obvious interlayer face, globality or bad, and the recovery difficult of raw material is larger.
The content of the invention
It is an object of the invention to provide a kind of can project in stove heterogeneity phantom requirement and with reference to different classes of carbon fiber
Hard carbon fibre thermal-insulation plate of performance advantage and preparation method thereof.
According to an aspect of the present invention, there is provided a kind of preparation method of hard carbon fibre thermal-insulation plate, the preparation
Method includes：Step S1, base substrate vacuum filtration molding：The different carbon fiber serosity of two groups of vacuum filtration, forms base substrate；Wherein,
Two groups of different carbon fiber serosity form the bottom and top of base substrate respectively；Step S2, base substrate curing molding：With 0.1-5 DEG C/
Base substrate after sucking filtration is heated to 180-300 DEG C by the heating rate of min；Step S3, base substrate charing process：By the base substrate after solidification
In vacuum or the environment of noble gases, being heated to 600-1200 DEG C carries out charing process；Step S4, billet surface process：
Base substrate after carbonization is carried out surface polishing, dust suction to process, and surface oxidation-resistant process is carried out again after handling well and/or surface adds
Gu process；Step S5, base substrate high-temperature process：During base substrate after surface treatment is transferred to vacuum or the environment of noble gases,
Being heated to 2000-2800 DEG C carries out high-temperature process, is prepared into hard carbon fibre thermal-insulation plate.
Wherein, in above-mentioned preparation method, step S1 includes：The preparation of step S11.A based carbon fiber silk：Grind carbon
Cellosilk, it is 50%-90% to obtain the carbon fiber wire accounting that length is 10-30mm, and length is that the carbon fiber wire accounting of 1-5mm is
The A based carbon fiber silks of 10%-50%；The preparation of step S12.B based carbon fiber silk：The carbon fiber wire different from A classes is ground, is obtained
Length is 50%-90% for the carbon fiber wire accounting of 10-30mm, and length is 10%-50%'s for the carbon fiber wire accounting of 1-5mm
B based carbon fiber silks；Step S13. prepares carbon fiber serosity：A based carbon fiber silk 0.5-5 parts, dispersant 0.5-5 are weighed by weight
100 parts of part and water, are uniformly mixing to obtain A based carbon fiber serosity；B class short carbon fiber silk 0.5-5 parts, dispersant are weighed by weight
100 parts of 0.5-5 parts and water, are uniformly mixing to obtain B based carbon fiber serosity；The casting moulds vacuum filtration molding of step S14.：By A class carbon
Fiber slurry is cast in vacuum filtration mould, and sucking filtration to base substrate thickness reaches 3-20mm, forms base substrate bottom；B classes carbon is fine
Dimension serosity is cast in vacuum filtration mould, and sucking filtration to base substrate thickness reaches 10-180mm, is formed at the top of base substrate.
Wherein, in above-mentioned preparation method, step S1 also includes：Step S15. resin-cast：To vacuum filtration mould
In tool, casting resin solution starts vacuum filtration, takes unnecessary resin solution away until solution submergence base substrate.
Wherein, in above-mentioned preparation method, the resin solution is phenol resin solution, epoxy resin solution, furan tree
One kind in lipoprotein solution, urea-formaldehyde resin solution, vinyl ester resinses solution.
Wherein, in above-mentioned preparation method, the A based carbon fibers silk is asphalt base carbon fiber, in phenolic aldehyde base carbon fibre
One or more, or mixed with polyacrylonitrile-based carbon fibre by one of which and constitute.
Wherein, in above-mentioned preparation method, the B based carbon fibers silk is viscose base carbon fibre, polyacrylonitrile-based carbon fibre
In one or more.
Wherein, in above-mentioned preparation method, the press curing moulding process is cold forming technique or hot press presser
One kind in skill.
Wherein, in above-mentioned preparation method, the surface oxidation-resistant is processed and/or reinforcing and processing surface includes：By table
Base substrate after face polishing, dust suction process carries out the chemical vapor deposition process of 10-60h.
Wherein, in above-mentioned preparation method, the surface oxidation-resistant is processed and/or reinforcing and processing surface includes：In table
Graphite paper and/or carbon cloth are pasted on the bottom surface of the base substrate after face polishing, dust suction process and/or top surface, and it is solid using compacting
Change moulding process, the molding at 180-300 DEG C.
Wherein, in above-mentioned preparation method, the surface oxidation-resistant is processed and/or reinforcing and processing surface includes：In table
The external coating ORC of the base substrate after face polishing, dust suction process.
According to another aspect of the present invention, there is provided a kind of hard carbon fiber heat insulation prepared by above-mentioned preparation method
Warming plate.
A kind of hard carbon fibre thermal-insulation plate of the present invention and preparation method thereof, makes full use of asphalt base carbon fiber or phenol
The high temperature antiradiation ability of aldehyde radical carbon fiber is strong, anti-yaw damper advantage is prepared as the hot junction face of hard carbon fibre thermal-insulation plate, profit
With the good heat insulating of viscose base carbon fibre, the intensity of polyacrylonitrile-based carbon fibre is good, cheap advantage is prepared as hard carbon
The cold end face of fibre thermal-insulation plate, drastically increases the heat preservation and insulation of hard carbon fibre thermal-insulation plate, Er Qiegong
Skill adopts vacuum filtration one-shot forming, and overall performance is good；Product surface is processed, and improves product quality, extends product
Service life；In addition, the raw material in whole vacuum filtration technique can carry out classification recovery reusing, life is greatly reduced
Produce cost.
Specific embodiment
To make the object, technical solutions and advantages of the present invention of greater clarity, with reference to specific embodiment, to this
Invention is further described.It should be understood that these descriptions are simply exemplary, and it is not intended to limit the scope of the present invention.This
Outward, in the following description, the description to known features and technology is eliminated, to avoid unnecessarily obscuring idea of the invention.
The invention provides a kind of preparation method of hard carbon fibre thermal-insulation plate, the preparation method includes：
Step S1, base substrate vacuum filtration molding.
The different carbon fiber serosity of two groups of vacuum filtration, forms base substrate；Wherein, two groups of different carbon fiber serosity difference shapes
Into the bottom and top of base substrate.
Specifically, step S1 includes：
The preparation of step S11. A based carbon fiber silks.
This step is prepared for heat insulating board heat mainly using strong, the carbon fiber wire of anti-yaw damper with high temperature antiradiation
The A based carbon fiber silks of end face, concrete preparation process are as follows：
Ground carbon fiber silk, it is 50%-90% to obtain the carbon fiber wire accounting that length is 10-30mm, and length is 1-5mm's
A based carbon fiber silk of the carbon fiber wire accounting for 10%-50%.Wherein, A based carbon fibers silk is asphalt base carbon fiber, phenolic aldehyde base carbon
One or more in fiber, or mixed with polyacrylonitrile-based carbon fibre by one of which and constitute.A based carbon fiber silks have high temperature
Antiradiation ability is strong, anti-yaw damper the advantages of, the hot junction face of hard carbon fibre thermal-insulation plate can be prepared as.
The preparation of step S12. B based carbon fiber silks.
This step mainly using with good heat insulating carbon fiber wire, prepares the B class carbon for heat insulating board cold end face
Cellosilk, concrete preparation process are as follows：
Ground carbon fiber silk, it is 50%-90% to obtain the carbon fiber wire accounting that length is 10-30mm, and length is 1-5mm's
B based carbon fiber silk of the carbon fiber wire accounting for 10%-50%.Wherein, B based carbon fibers silk is viscose base carbon fibre, polyacrylonitrile
One or more in base carbon fibre.The good heat insulating of B based carbon fiber silks, can be prepared as hard carbon fibre thermal-insulation plate
Cold end face.
Step S13. prepares carbon fiber serosity.
100 parts of A based carbon fiber silk 0.5-5 parts, dispersant 0.5-5 parts and water are weighed by weight, are uniformly mixing to obtain A classes
Carbon fiber serosity.100 parts of B class short carbon fiber silk 0.5-5 parts, dispersant 0.5-5 parts and water are weighed by weight, are stirred
To B based carbon fiber serosity.
The casting moulds vacuum filtration molding of step S14..
A based carbon fiber serosity is cast in vacuum filtration mould, sucking filtration to base substrate thickness reaches 3-20mm, forms base substrate
Bottom；B based carbon fiber serosity is cast in vacuum filtration mould, sucking filtration to base substrate thickness reaches 10-180mm, forms base substrate
Top.
Step S15. resin-cast.
To in vacuum filtration mould, casting resin solution starts vacuum filtration until solution submergence base substrate, and it is unnecessary to take away
Resin solution.Wherein, resin solution be phenol resin solution, epoxy resin solution, furane resins solution, urea-formaldehyde resin solution,
One kind in vinyl ester resinses solution.
Step S2, base substrate curing molding.
The base substrate after sucking filtration is heated to into 180-300 DEG C with the heating rate of 0.1-5 DEG C/min.Wherein, press curing into
Type technique is cold forming technique or the one kind in hot press pressing process.
Step S3, base substrate charing process.
By the base substrate after solidification in vacuum or the environment of noble gases, being heated to 600-1200 DEG C is carried out at carbonization
Reason.
Step S4, billet surface process.
By the base substrate after carbonization carry out surface polishing, dust suction process, carried out after handling well again surface oxidation-resistant process and/
Or reinforcing and processing surface.Specifically, the base substrate by surface polishing, after dust suction is processed is carried out at the chemical vapor deposition of 10-60h
Reason；Or the base substrate after surface polishing, dust suction are processed bottom surface and/or top surface on paste graphite paper and/or carbon cloth, and
Using press curing moulding process, the molding at 180-300 DEG C；Or the surface of the base substrate after surface polishing, dust suction are processed
Brushing ORC.
Step S5, base substrate high-temperature process.
During base substrate after surface treatment is transferred to vacuum or the environment of noble gases, it is heated to 2000-2800 DEG C and enters
Row high-temperature process, is prepared into hard carbon fibre thermal-insulation plate.
The preparation method of the hard carbon fibre thermal-insulation plate of the present invention combines the advantage of different type carbon fiber and goes forward side by side
Row integrated optimization, designability are strong.
Using this wet therapy forming process, with clean excellent of recovery simple to operate, capable of circulation, low cost and working environment
Point.And, vacuum filtration one-shot forming so that the overall performance of product preferably, and forms density gradient, meets high temperature heat transfer
Mechanism, product can be made into the heat conductivity (vacuum environment, 1600 DEG C) of 0.36W/m.K；In addition, by product surface
Reason, improves the service life of product, increased the capability of resistance to radiation of high temperature face.
The preferred embodiment of the preparation method of the hard carbon fibre thermal-insulation plate of the present invention is described below.The embodiment
The preferable or preferred version of the object of the invention is only realized, but is not construed as limiting the invention.
【First embodiment】
Step S1, base substrate vacuum filtration molding.
The ratio that asphalt base carbon fiber is cut into 2mm respectively is 20%, and the ratio 80% of 10mm, 2 parts altogether, fiber
1 part of element, 100 parts of deionized water stirs, and is prepared into A carbon fiber serosity.Polypropylene fine base carbon fibre is cut into into 2mm's respectively
Ratio is 20%, and the ratio 80% of 10mm, 2 parts altogether, and 1 part of cellulose, 100 parts of deionized water stir, and are prepared into B
Carbon fiber serosity.First A slurries are aspirated, reach 20mm it is thick after, turn B slurries are aspirated, last base substrate thickness reaches
The phenolic resin of dilution is poured into a mould after 100mm, vacuum filtration is again started up, excessive phenolic resin is taken out.
Step S2, base substrate curing molding.
The base substrate that vacuum filtration is finished is placed on hot press carries out press curing molding, is added with 3 DEG C/min heating rates
Heat is to 200 DEG C.
Step S3, base substrate charing process.
By the base substrate after curing molding under vacuum conditions, it is heated to 900 DEG C of charing process.
Step S4, billet surface process.
It is that asphalt-based carbon fiber face is polished by the base substrate bottom surface after charing process, makes surfacing, repaste brush adhesive,
Paste graphite paper, then on hot press hot-press solidifying to 200 DEG C.
Step S5, base substrate high-temperature process
By the base substrate after surface treatment under an argon atmosphere, 2400 DEG C of high temperature purification treatments are heated to, hard carbon is prepared into
Fibre thermal-insulation plate, its properties of product are as shown in table 1：
Table 1
【Second embodiment】
From unlike embodiment one, phenolic aldehyde base carbon fibre in step sl, is cut into the ratio of 5mm by the present embodiment respectively
For 10%, and the ratio 90% of 30mm, 4 parts altogether, 2 parts of cellulose, 100 parts of deionized water stir, and are prepared into A carbon fine
Dimension serosity.The ratio that polyacrylonitrile-based carbon fibre is cut into 5mm respectively is 10%, and the ratio 90% of 30mm, 1 part altogether,
0.5 part of cellulose, 100 parts of deionized water stir, and are prepared into B carbon fiber serosity.First A slurries are aspirated, is reached
After 30mm is thick, turn to aspirate B slurries, last base substrate thickness pours into a mould the phenolic resin of dilution after reaching 70mm, be again started up
Vacuum filtration, excessive phenolic resin is taken out.
The performance of the hard carbon fibre thermal-insulation plate of preparation is as indicated with 2：
Table 2
【3rd embodiment】
From unlike embodiment one, the present embodiment in step sl, asphalt base carbon fiber is cut into the ratio of 1mm respectively
For 10%, and the ratio 90% of 30mm, 0.5 part altogether, 4 parts of cellulose, 100 parts of deionized water stir, and are prepared into A carbon
Fiber slurry.It is 10% by the ratio that viscose base carbon fibre is cut into 1mm respectively, and the ratio 90% of 30mm, 0.5 part altogether,
1 part of cellulose, 100 parts of deionized water stir, and are prepared into B carbon fiber serosity.First A slurries are aspirated, 20mm is reached
After thickness, turn to aspirate B slurries, last base substrate thickness pours into a mould the phenolic resin of dilution after reaching 50mm, be again started up vacuum
Sucking filtration, excessive phenolic resin is taken out.
The performance of the hard carbon fibre thermal-insulation plate of preparation is as shown in table 3：
Table 3
【4th embodiment】
From unlike embodiment one, phenolic aldehyde base carbon fibre in step sl, is cut into the ratio of 4mm by the present embodiment respectively
For 30%, and the ratio 70% of 20mm, 5 parts altogether, 1 part of cellulose, 100 parts of deionized water stir, and are prepared into A carbon fine
Dimension serosity.It is 30% by the ratio that viscose base carbon fibre is cut into 4mm respectively, and the ratio 70% of 20mm, 1 part altogether, fiber
1.5 parts of element, 100 parts of deionized water stirs, and is prepared into B carbon fiber serosity.First A slurries are aspirated, 20mm is reached thick
Afterwards, turn to aspirate B slurries, last base substrate thickness pours into a mould the phenolic resin of dilution after reaching 50mm, be again started up vacuum and take out
Filter, excessive phenolic resin is taken out.
The performance of the hard carbon fibre thermal-insulation plate of preparation is as shown in table 4：
Table 4
【5th embodiment】
From unlike embodiment one, the present embodiment in step sl, will be asphalt base carbon fiber and polyacrylonitrile-based carbon fine
Dimension by weight 2:It is 50% that the ratio of 3mm is cut in the mixing of 1 ratio respectively, and the ratio 50% of 30mm, 1.5 parts altogether, fiber
1 part of element, 100 parts of deionized water stirs, and is prepared into A carbon fiber serosity.Will be viscose base carbon fibre and polyacrylonitrile-based carbon fine
Dimension by weight 1:It is 50% that the ratio of 3mm is cut in the mixing of 1 ratio respectively, and the ratio 50% of 30mm, 2 parts altogether, cellulose 3
Part, 100 parts of deionized water stirs, and is prepared into B carbon fiber serosity.First A slurries are aspirated, reach 30mm it is thick after, turn
B slurries are aspirated, last base substrate thickness pours into a mould the phenolic resin of dilution after reaching 150mm, be again started up vacuum filtration, will
Excessive phenolic resin is taken out.
The performance of the hard carbon fibre thermal-insulation plate of preparation is as shown in table 5：
Table 5
【6th embodiment】
From unlike embodiment one, the present embodiment in step sl, asphalt base carbon fiber and phenolic aldehyde base carbon fibre is pressed
Weight 1:It is 20% that the ratio of 5mm is cut in the mixing of 1 ratio respectively, and the ratio 80% of 30mm, 5 parts altogether, cellulose 0.5
Part, 100 parts of deionized water stirs, and is prepared into A carbon fiber serosity.By the ratio that viscose base carbon fibre is cut into 5mm respectively it is
20%, and the ratio 80% of 30mm, 1 part altogether, 1 part of cellulose, 100 parts of deionized water stir, and are prepared into B carbon fibers
Serosity.First A slurries are aspirated, reach 40mm it is thick after, turn B slurries are aspirated, after last base substrate thickness reaches 80mm
The phenolic resin of cast dilution, is again started up vacuum filtration, excessive phenolic resin is taken out.
The performance of the hard carbon fibre thermal-insulation plate of preparation is as shown in table 6：
Table 6
In the above embodiment of the present invention, the celluloses for being adopted can such as be methylcellulose, carboxymethyl cellulose
Sodium, hydroxyethyl cellulose, hydroxypropyl methyl cellulose etc., but this is not restricted to, other kinds of cellulose is readily adaptable for use in
The present invention.
The present invention also provides a kind of hard carbon fibre thermal-insulation plate, and the hard carbon fibre thermal-insulation plate is according to aforesaid
Preparation method is made.
As described above, a kind of hard carbon fibre thermal-insulation plate of the present invention and preparation method thereof, makes full use of asphaltic base
The high temperature antiradiation ability of carbon fiber or phenolic aldehyde base carbon fibre is strong, anti-yaw damper advantage is prepared as hard carbon fibre thermal-insulation plate
Hot junction face, using the good heat insulating of viscose base carbon fibre, the intensity of polyacrylonitrile-based carbon fibre is good, prepared by cheap advantage
For the cold end face of hard carbon fibre thermal-insulation plate, the heat-insulation and heat-preservation of hard carbon fibre thermal-insulation plate is drastically increased
Can, and technique adopts vacuum filtration one-shot forming, and overall performance is good；Product surface is processed, and improves product quality, is prolonged
The service life of product is grown；In addition, the raw material in whole vacuum filtration technique can carry out classification recovery reuse, significantly
Reduce production cost.
It should be appreciated that the above-mentioned specific embodiment of the present invention is used only for exemplary illustration or explains the present invention's
Principle, and be not construed as limiting the invention.Therefore, that what is done in the case of without departing from the spirit and scope of the present invention is any
Modification, equivalent, improvement etc., should be included within the scope of the present invention.Additionally, claims purport of the present invention
In the whole changes covered in the equivalents for falling into scope and border or this scope and border and repair
Change example.
Claims (7)
1. a kind of preparation method of hard carbon fibre thermal-insulation plate, it is characterised in that the preparation method includes：
Step S1, base substrate vacuum filtration molding：The different carbon fiber serosity of two groups of vacuum filtration, forms base substrate；Wherein, two groups not
Same carbon fiber serosity forms the bottom and top of base substrate respectively；
Step S2, base substrate curing molding：The base substrate after sucking filtration is heated to into 180-300 DEG C with the heating rate of 0.1-5 DEG C/min；
Step S3, base substrate charing process：By the base substrate after solidification in vacuum or the environment of noble gases, 600- is heated to
1200 DEG C carry out charing process；
Step S4, billet surface process：Base substrate after carbonization is carried out surface polishing, dust suction to process, table after handling well, is carried out again
Face non-oxidizability is processed and/or reinforcing and processing surface；
Step S5, base substrate high-temperature process：During base substrate after surface treatment is transferred to vacuum or the environment of noble gases, heating
High-temperature process is carried out to 2000-2800 DEG C, hard carbon fibre thermal-insulation plate is prepared into；
Step S1 includes：
Step S11, the preparation of A based carbon fiber silks：Ground carbon fiber silk, obtaining the carbon fiber wire accounting that length is 10-30mm is
50%-90%, length are the A based carbon fiber silk of the carbon fiber wire accounting for 10%-50% of 1-5mm；The A based carbon fibers silk is
One or more in asphalt base carbon fiber, phenolic aldehyde base carbon fibre, or mix group with polyacrylonitrile-based carbon fibre by one of which
Into；
Step S12, the preparation of B based carbon fiber silks：The carbon fiber wire different from A classes is ground, the carbon that length is 10-30mm is obtained fine
Dimension silk accounting is 50%-90%, and length is the B based carbon fiber silk of the carbon fiber wire accounting for 10%-50% of 1-5mm；The B classes
Carbon fiber wire is viscose base carbon fibre, one or more in polyacrylonitrile-based carbon fibre；
Step S13, prepares carbon fiber serosity：A based carbon fiber silk 0.5-5 parts, dispersant 0.5-5 parts and water are weighed by weight
100 parts, it is uniformly mixing to obtain A based carbon fiber serosity；B class short carbon fiber silk 0.5-5 parts, dispersant 0.5-5 are weighed by weight
100 parts of part and water, are uniformly mixing to obtain B based carbon fiber serosity；
Step S14, casting moulds vacuum filtration molding：A based carbon fiber serosity is cast in vacuum filtration mould, sucking filtration is to base substrate
Thickness reaches 3-20mm, forms base substrate bottom；B based carbon fiber serosity is cast in vacuum filtration mould, sucking filtration is thick to base substrate
Degree reaches 10-180mm, is formed at the top of base substrate；
Step S15, resin-cast：To in vacuum filtration mould, casting resin solution starts vacuum and takes out until solution submergence base substrate
Filter, takes unnecessary resin solution away.
2. preparation method according to claim 1, it is characterised in that the resin solution is phenol resin solution, epoxy
One kind in resin solution, furane resins solution, urea-formaldehyde resin solution, vinyl ester resinses solution.
3. preparation method according to claim 1, it is characterised in that the cure process is cold forming technique or heat
One kind in press pressing process.
4. preparation method according to claim 1, it is characterised in that the surface oxidation-resistant is processed and/or surface adds
Gu process includes：
Base substrate after surface polishing, dust suction are processed carries out the chemical vapor deposition process of 10-60h.
5. preparation method according to claim 1, it is characterised in that the surface oxidation-resistant is processed and/or surface adds
Gu process includes：
Graphite paper and/or carbon cloth are pasted on the bottom surface of the base substrate after surface polishing, dust suction are processed and/or top surface, and adopt
Press curing moulding process is used, the molding at 180-300 DEG C.
6. preparation method according to claim 1, it is characterised in that the surface oxidation-resistant is processed and/or surface adds
Gu process includes：
The external coating ORC of the base substrate after surface polishing, dust suction are processed.
7. a kind of hard carbon fibre thermal-insulation plate prepared by any one of the claims 1-6 preparation method.
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| CN101628816B (en) * | 2008-07-17 | 2013-03-13 | 鞍山塞诺达碳纤维有限公司 | Method for manufacturing high-density rigid carbon-fiber heat-insulation material |
| CN104276805B (en) * | 2013-07-03 | 2016-05-25 | 辽源市亿达碳业有限公司 | A kind of preparation method of hard carbon felt |
| CN103568385B (en) * | 2013-10-18 | 2015-04-22 | 四川创越炭材料有限公司 | Heat-preservation hard composite carbon fiber felt and preparation method thereof |
| CN104058776B (en) * | 2014-07-09 | 2015-11-18 | 四川创越炭材料有限公司 | A kind of preparation method of the hard carbon fiber heat preservation material be made up of Carbon fibe ball |
| CN104230368B (en) * | 2014-09-26 | 2016-01-20 | 辽宁奥亿达新材料有限公司 | Asphalt base carbon fiber non-woven mat warming plate and manufacture method thereof |
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