CN107244938A - A kind of high-performance is combined the manufacture method of carbon fiber guide shell - Google Patents

A kind of high-performance is combined the manufacture method of carbon fiber guide shell Download PDF

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Publication number
CN107244938A
CN107244938A CN201710098362.2A CN201710098362A CN107244938A CN 107244938 A CN107244938 A CN 107244938A CN 201710098362 A CN201710098362 A CN 201710098362A CN 107244938 A CN107244938 A CN 107244938A
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carbon fiber
guide shell
fiber guide
compound
mixed
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CN107244938B (en
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郑淑云
王红伟
陈惠龙
张作桢
朴成军
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Liaoning Aoyida New Materials Co ltd
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LIAONING AOYIDA ADVANCED MATERIAL Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/71—Ceramic products containing macroscopic reinforcing agents
    • C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
    • C04B35/80—Fibres, filaments, whiskers, platelets, or the like
    • C04B35/83—Carbon fibres in a carbon matrix
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/24—Apparatus or processes for treating or working the shaped or preshaped articles for curing, setting or hardening
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/30—Constituents and secondary phases not being of a fibrous nature
    • C04B2235/48—Organic compounds becoming part of a ceramic after heat treatment, e.g. carbonising phenol resins
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/526—Fibers characterised by the length of the fibers
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
    • C04B2235/50—Constituents or additives of the starting mixture chosen for their shape or used because of their shape or their physical appearance
    • C04B2235/52—Constituents or additives characterised by their shapes
    • C04B2235/5208—Fibers
    • C04B2235/5272—Fibers of the same material with different length or diameter
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
    • C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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    • C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
    • C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
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  • Inorganic Fibers (AREA)

Abstract

The present invention relates to the manufacture method that a kind of high-performance is combined carbon fiber guide shell, after the mixed carbon fibre that chopped carbon fiber and ground carbon fiber are constituted is mixed with organic binder bond, solvent, remove solvent therein, by the compound carbon fiber of Surface coating organic binder bond and water, dispersant formation carbon fiber mixed slurry, compound carbon fiber guide shell prefabrication is made through being sucked by vacuum shaping；It is dehydrated it by the way of vapours or hot air and completes non-fusible, insoluble processing；Then through carbonization or graphitization processing, compound carbon fiber guide shell finished product is obtained.Compound carbon fiber guide shell made by the present invention has good heat-proof quality, good in oxidation resistance, the characteristic that thermal capacity is low, intensity is high, and manufacture craft is simple, and cost is low, and finished form and size are controllable, and density is adjustable；Finished product is not easy to crack, and self-supporting is good, and service life is long；Can also have excellent antioxygenic property after surface treated, and further improve service life.

Description

A kind of high-performance is combined the manufacture method of carbon fiber guide shell
Technical field
The present invention relates to high temperature furnace used guide shell manufacture technology field, more particularly to a kind of high performance compound carbon fiber guiding The manufacture method of flow cartridge.
Background technology
With the progress of science and technology, the field such as military affairs, national defence, solar energy, semiconductor, heat treatment all in fast development, The development in these fields is directed to the use of insulation material；Especially solar energy, semiconductor are developed rapidly in recent years, to thermal insulating material The demand of material seems more prominent, and the requirement more and more higher to insulation material, does not require nothing more than energy-saving, and requires anti- Oxidation susceptibility is high, and these requirements also constantly promote the fast development of field of heat insulating materials.
The carbon fiber thermal insulating material once generally used on vacuum high temperature furnace at home is soft carbon felt (Nomex), soft carbon felt There is low intensity, yielding, easy efflorescence, effect of heat insulation difference and dismounting, installation when being used as heat-insulating heat-preserving material wastes time and energy The shortcomings of.The hard felt heat-insulating heat-preserving material of carbon fiber newly developed can overcome the disadvantages mentioned above of soft carbon felt, thus as crystal oven, The high temperature furnace used heat-insulating heat-preserving material such as ceramic sintering furnace, gaseous phase deposition stove is increasingly used.
At present, the domestic hard felt of carbon fiber used is mainly using the moulding process of PAN base soft carbons felt dipping molding.Dipping former Pressure technique make the hard felt of carbon fiber there is low intensity between high energy consumption, the hard carpet veneer of carbon fiber, it is easy to crack, the life-span is low, binder content Height, the shortcomings of antioxygenic property is poor.
The content of the invention
The invention provides the manufacture method that a kind of high-performance is combined carbon fiber guide shell, made compound carbon fiber guiding Flow cartridge has good heat-proof quality, good in oxidation resistance, the characteristic that thermal capacity is low, intensity is high, and manufacture craft is simple, and cost is low, into Product shape and size are controllable, and density is adjustable；Finished product is not easy to crack, and self-supporting is good, and service life is long；May be used also after surface treated With excellent antioxygenic property, and further improve service life.
In order to achieve the above object, the present invention is realized using following technical scheme：
A kind of high-performance is combined the manufacture method of carbon fiber guide shell, comprises the following steps：
1) chopped carbon fiber is prepared；Carbon fiber is chopped, the chopped carbon fiber that average length is 1~80mm is obtained；
2) ground carbon fiber is prepared；Carbon fiber is ground, the ground carbon fiber that average length is 100~800 μm is obtained；
3) by chopped carbon fiber and weight ratio of the ground carbon fiber according to 10~90 ﹕ 90~10, using cyclonic separation Device is sufficiently mixed uniformly, obtains mixed carbon fibre；
4) mixed carbon fibre is mixed with organic binder bond, solvent by the ﹕ 3~920 of 100 ﹕ 20~230 weight ratio, Obtain carbon fiber mixed liquor；Carbon fiber mixed liquor is put into mesh bag, through mesh aperture for after 1~50 μm of mesh bag initial filter, then Using 50~60 DEG C of hot-air into mesh bag 10~30min of blow-through, the solvent in carbon fiber mixed liquor is volatilized completely, obtain The compound carbon fiber of Surface coating organic binder bond；
5) by the compound carbon fiber of Surface coating organic binder bond and water, dispersant according to the ﹕' 0.1~2 of 0.3~6 ﹕ 100 Weight ratio is sufficiently mixed, and forms uniform carbon fiber mixed slurry；
6) carbon fiber mixed slurry is molded using vacuum suction；By the guide shell mould immersion used in vacuum suction It is molded in pond, guide shell mould is made up of interior mould, the outer mold being set in together, and inside and outside mould is taper barrel Structure；Wherein interior mould is made up of sieve plate, and its outer surface is fixed with screen cloth, and the aperture of screen cloth is 30~200 μm, and outer mold is net Grating texture, the unilateral or radial dimension of grid hole is 30~100mm；
The guide shell mould is placed in shaping pond with axis in vertical state, and its upper end is used provided with positioning step Played the role of positioning when immersion shaping pond；
Vacuum forming chamber is formed between the interior mould, outer mold, and vacuum forming chamber has and compound carbon fiber water conservancy diversion The shape and size that cylinder is engaged；Suction tube is set along interior mould longitudinal center is elongated；In the presence of suction tube, carbon fiber is mixed Close slurry to be molded by aligned transfer in vacuum forming room, compound carbon fiber guide shell prefabrication is made；
7) compound carbon fiber guide shell prefabrication is taken out together with guide shell mould from shaping pond, used 100~240 DEG C of vapours or hot air 2~5 hours, make compound carbon fiber guide shell prefabrication be dehydrated and complete not melt Change, insoluble processing；
8) the compound carbon fiber guide shell prefabrication after dehydration and non-fusible, insoluble processing is stripped, and is then placed in true It is carbonized in empty stove or under an inert atmosphere, carburizing temperature is 800~1800 DEG C；Also it can carry out according to requirements at graphitization Reason, graphitization temperature is 1800~2500 DEG C；High performance compound carbon fiber water conservancy diversion is obtained after carbonization or graphitization processing Cylinder；
9) density of the compound carbon fiber guide shell obtained by is 0.1~0.35g/cm3, thermal conductivity factor is less than 0.35W/ m·K；
10) selectively compound carbon fiber guide shell is surface-treated as needed；To increase its anti-airflow scouring And antioxygenic property, improve its service life；What is be surface-treated concretely comprises the following steps：
A. to being combined the machined carry out surface grinding of carbon fiber guide shell；
B. in the inside/outside or inner and outer surfaces brushing adhesive layer of compound carbon fiber guide shell, can further it exist as needed Adhesive layer external pasting overcoat, overcoat is flexible graphite paper/carbon cloth, carbon cloth or graphitic sheet, can not also be pasted Overcoat；
C. to being handled through b step after compound carbon fiber guide shell carry out curing process, then be carbonized/graphitization at Reason, obtains surface treated compound carbon fiber guide shell.
It is described that to prepare carbon fiber used when chopped carbon fiber or ground carbon fiber fine for asphalt base carbon fiber, viscose base carbon One or more in dimension, PAN base carbon fibres, be preferably chopped asphalt base carbon fiber, by any during from more than one carbon fibers Ratio is mixed.
The mesh bag is made up of non-woven fabrics, synthetic cotton, polypropylene, Teflon or polyester material, and the aperture of mesh bag is 1~50 μm, preferably 5~30 μm.
The grid hole of the outer mold is shaped as triangle, circle, square, rectangle, rhombus, regular polygon or not advised Then one kind in polygon.
The organic binder bond is selected from phenolic resin, epoxy resin, furane resins, Lauxite, vinyl ester resin, poly- In acid amides, acrylic resin, polyethylene, polypropylene, ethylene propylene copolymer, polystyrene, monose, polysaccharide, pitch, tar One or more kinds of any mixing.
The solvent be selected from methanol, ethanol, propyl alcohol, ethylene glycol, propane diols, glycerine, ether, furfuryl alcohol, furfural, acetone, Any mixing of one or more in benzene, toluene, furancarbinol, furtural.
The dispersant is selected from methylcellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl fiber Element, hydroxymethyl cellulose, ethyl cellulose, cellulose ether, methylethylcellulose, Hydroxypropyl ethyl cellulose, hydroxyl second One kind in base ethyl cellulose, hydroxymethyl ethylcellulose, polyvinyl alcohol, Pioloform, polyvinyl acetal, starch, modified starch or one Plant any of the above mixing.
Compared with prior art, the beneficial effects of the invention are as follows：
1) can produce the compound carbon fiber guide shell of higher density, lower thermal conductivity and high intensity, and finished product have it is excellent Good cracking resistance；
Chopped carbon fiber of the present invention can not only increase the intensity of compound carbon fiber guide shell, and can increase Plus its toughness, can shock resistance, so as to make it have excellent cracking resistance；The ground carbon fiber used not only may be used To play a part of the compound carbon fiber guide shell density of appropriate adjustment, the content of carbon fiber in finished product can also be increased；And carbon is fine The content of dimension can not only influence the thermal conductivity factor of compound carbon fiber guide shell, can also influence its antioxygenic property；Carbon fiber content More arrangements are better, and the thermal conductivity factor for being combined carbon fiber guide shell is smaller；Carbon fiber content is more, and its inoxidizability is better；
The present invention is taken out by changing organic binder bond, chopped carbon fiber and the mixed proportion of ground carbon fiber, adjustment vacuum The vacuum in moulding process is inhaled, the density of compound carbon fiber guide shell can be adjusted；Made compound carbon fiber guide shell Density be 0.1~0.35g/cm3, thermal conductivity factor is less than 0.35W/mK；
2) production cost of the invention is low, and technique is simple, and stability is high, easy to operate；
The present invention is dehydrated and non-fusible, insoluble using vapours or hot-air to compound carbon fiber guide shell prefabrication Change is handled, and can greatly improve production efficiency, reduces production cost, saves energy consumption；It is dehydrated using the method for the invention And non-fusible, insoluble processing only needs to complete for 2~5 hours, and use conventional baking oven or heating furnace carry out it is non-fusible, Insoluble processing needs to complete for 80~120 hours, therefore the efficiency of the present invention improves tens times；And the operation link Energy consumption be also down to from yuan/kilogram of unit consumption 11 below 3 yuan/kilogram, energy conservation and consumption reduction effects are obvious；
3) the compound carbon fiber guide shell made by the present invention has good effect of heat insulation；
In compound carbon fiber guide shell prefabrication of the present invention, carbon fiber orientation meets two-dimensional arrangements, and with Direction of heat flow is vertical, is heat-insulated optimum orientation；Product is not easy to crack, and self-supporting is good, and service life is long；Especially making big It is more advantageous in technique during sized products；
4) present invention is coordinated using inside and outside mould, can be with the shape and size of one-step building product, finished product through vacuum suction It is that can obtain scale product only to need slightly processed, and stock utilization can reach more than 90%；And use what common die was molded Product size can not be controlled accurately, and Surface Machining amount is big, and product utilization rate most multipotency reaches 75~80%；Therefore the present invention is significantly The utilization rate of material is improved, the generation of waste material is reduced, so as to considerably reduce production cost；
5) according to requirements, further surface can be done to it on the basis of obtained compound carbon fiber guide shell Processing, can prevent high temperature furnace gas from directly being contacted with compound carbon fiber guide shell, improve the ability of its anti-airflow scouring, make It has excellent antioxygenic property, and further improves the service life of compound carbon fiber guide shell.
Brief description of the drawings
Fig. 1 is the process diagram of vacuum suction shaping of the present invention.
The structural representation of guide shell mould used when Fig. 2 is vacuum suction shaping of the present invention；
Fig. 3 is the cross-sectional view in Fig. 2.
Fig. 4 is the structural representation of the outer mold of guide shell mould of the present invention (by taking network as an example).
Fig. 5 is the structural representation after compound carbon fiber guide shell inner surface surface treated of the present invention.
Fig. 6 is the structural representation after compound carbon fiber guide shell inner and outer surfaces surface treated of the present invention.
In figure：1. it is molded the internal model of pond 2. guide shell mould, 3. vacuum tank, 4. water ring vacuum pump, 5. suction tube 6. The compound outer mold 9. of carbon fiber guide shell prefabrication 8. of tool 7. is combined the overcoat of 10. bond layer of carbon fiber guide shell 11. 12. it is molded dolly
Embodiment
The embodiment to the present invention is described further below in conjunction with the accompanying drawings：
A kind of high-performance of the present invention is combined the manufacture method of carbon fiber guide shell, comprises the following steps：
1) chopped carbon fiber is prepared；Carbon fiber is chopped, the chopped carbon fiber that average length is 1~80mm is obtained；
2) ground carbon fiber is prepared；Carbon fiber is ground, the ground carbon fiber that average length is 100~800 μm is obtained；
3) by chopped carbon fiber and weight ratio of the ground carbon fiber according to 10~90 ﹕ 90~10, using cyclonic separation Device is sufficiently mixed uniformly, obtains mixed carbon fibre；
4) mixed carbon fibre is mixed with organic binder bond, solvent by the ﹕ 3~920 of 100 ﹕ 20~230 weight ratio, Obtain carbon fiber mixed liquor；Carbon fiber mixed liquor is put into mesh bag, through mesh aperture for after 1~50 μm of mesh bag initial filter, then Using 50~60 DEG C of hot-air into mesh bag 10~30min of blow-through, the solvent in carbon fiber mixed liquor is volatilized completely, obtain The compound carbon fiber of Surface coating organic binder bond；
5) by the compound carbon fiber of Surface coating organic binder bond and water, dispersant according to the ﹕' 0.1~2 of 0.3~6 ﹕ 100 Weight ratio is sufficiently mixed, and forms uniform carbon fiber mixed slurry；
6) carbon fiber mixed slurry is molded using vacuum suction；As shown in figure 1, by the guide shell used in vacuum suction into In the immersion shaping ponds 1 of pattern tool 2, as shown in Figure 2 and Figure 3, guide shell mould 2 is by the interior mould 6, the external mold that are set in together Tool 8 is constituted, and inside and outside mould is taper barrel structure；Wherein interior mould is made up of sieve plate, and its outer surface is fixed with screen cloth, sieve The aperture of net is 30~200 μm, and outer mold is fenestral fabric, and the unilateral or radial dimension of grid hole is 30~100mm；(such as Shown in Fig. 4)
The guide shell mould 2 is placed in shaping pond 1 with axis in vertical state, and its upper end is provided with positioning step Played the role of positioning during for immersing shaping pond 1；
Vacuum forming chamber is formed between the interior mould, outer mold, and vacuum forming chamber has and compound carbon fiber water conservancy diversion The shape and size that cylinder is engaged；Suction tube 5 is set along the interior longitudinal center of mould 6 is elongated；In the presence of suction tube 5, carbon is fine Tie up mixed slurry to be molded by aligned transfer in vacuum forming room, compound carbon fiber guide shell prefabrication 7 is made；
7) compound carbon fiber guide shell prefabrication 7 is taken out together with guide shell mould 2 from shaping pond 1, adopted With 100~240 DEG C of vapours or hot air 2~5 hours, compound carbon fiber guide shell prefabrication 7 is set to be dehydrated and complete Non-fusible, insoluble processing；
8) the compound carbon fiber guide shell prefabrication 7 after dehydration and non-fusible, insoluble processing is stripped, and is then placed in true It is carbonized in empty stove or under an inert atmosphere, carburizing temperature is 800~1800 DEG C；Also it can carry out according to requirements at graphitization Reason, graphitization temperature is 1800~2500 DEG C；High performance compound carbon fiber water conservancy diversion is obtained after carbonization or graphitization processing Cylinder 9；
9) density of the compound carbon fiber guide shell 9 obtained by is 0.1~0.35g/cm3, thermal conductivity factor is less than 0.35W/ m·K；
10) selectively compound carbon fiber guide shell 9 is surface-treated as needed；To increase its anti-airflow scouring And antioxygenic property, improve its service life；What is be surface-treated concretely comprises the following steps：
A. to being combined the machined carry out surface grinding of carbon fiber guide shell 9；
B. as shown in Figure 5, Figure 6, in the inside/outside or inner and outer surfaces brushing adhesive layer 10 of compound carbon fiber guide shell 9, As needed can be further in the external pasting overcoat 11 of adhesive layer 10, overcoat 11 is flexible graphite paper/carbon cloth, carbon cloth Or graphitic sheet, overcoat 11 can not also be pasted；
C. to being handled through b step after compound carbon fiber guide shell carry out curing process, then be carbonized/graphitization at Reason, obtains surface treated compound carbon fiber guide shell.
It is described that to prepare carbon fiber used when chopped carbon fiber or ground carbon fiber fine for asphalt base carbon fiber, viscose base carbon One or more in dimension, PAN base carbon fibres, be preferably chopped asphalt base carbon fiber, by any during from more than one carbon fibers Ratio is mixed.
The mesh bag is made up of non-woven fabrics, synthetic cotton, polypropylene, Teflon or polyester material, and the aperture of mesh bag is 1~50 μm, preferably 5~30 μm.
The grid hole of the outer mold is shaped as triangle, circle, square, rectangle, rhombus, regular polygon or not advised Then one kind in polygon.
The organic binder bond is selected from phenolic resin, epoxy resin, furane resins, Lauxite, vinyl ester resin, poly- In acid amides, acrylic resin, polyethylene, polypropylene, ethylene propylene copolymer, polystyrene, monose, polysaccharide, pitch, tar One or more kinds of any mixing.
The solvent be selected from methanol, ethanol, propyl alcohol, ethylene glycol, propane diols, glycerine, ether, furfuryl alcohol, furfural, acetone, Any mixing of one or more in benzene, toluene, furancarbinol, furtural.
The dispersant is selected from methylcellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl methyl fiber Element, hydroxymethyl cellulose, ethyl cellulose, cellulose ether, methylethylcellulose, Hydroxypropyl ethyl cellulose, hydroxyl second One kind in base ethyl cellulose, hydroxymethyl ethylcellulose, polyvinyl alcohol, Pioloform, polyvinyl acetal, starch, modified starch or one Plant any of the above mixing.
Following examples are implemented lower premised on technical solution of the present invention, give detailed embodiment and tool The operating process of body, but protection scope of the present invention is not limited to following embodiments.Method therefor and material in following embodiments It is conventional method and material unless otherwise instructed.
【Embodiment 1】
In the present embodiment, the manufacture method of high performance compound carbon fiber guide shell is as follows：
1) chopped carbon fiber is prepared；Asphalt base carbon fiber is chopped, the chopped carbon fiber that average length is 40mm is obtained；
2) ground carbon fiber is prepared；Asphalt base carbon fiber is ground, the ground carbon fiber that average length is 100 μm is obtained；
3) by chopped carbon fiber and ground carbon fiber according to 60：40 weight ratio, is fully mixed using cyclone separator Close uniform, obtain mixed carbon fibre；
4) mixed carbon fibre and organic binder bond phenolic resin, etoh solvent are pressed 100：30：70 weight ratio is mixed Close, obtain carbon fiber mixed liquor；Carbon fiber mixed liquor is put into mesh bag, through mesh aperture for after 30 μm of mesh bag initial filter, then Using 50 DEG C of hot-air into mesh bag blow-through 30min, the solvent in carbon fiber mixed liquor is volatilized completely, obtain Surface coating The compound carbon fiber of organic binder bond；
5) by the compound carbon fiber of Surface coating organic binder bond and water, methylcellulose according to the ﹕ 1 of 3 ﹕ 100 parts by weight Ratio is sufficiently mixed, and forms uniform carbon fiber mixed slurry；
6) carbon fiber mixed slurry is molded using vacuum suction；Guide shell mould 2 used in vacuum suction is soaked Enter to be molded in pond 1, shaping pond 1 is arranged on shaping dolly 12, facilitates finishing type to finish the transport of rear material；Guide shell shaping mould 2 interior mould 6, the outer mold 8 by being set in together of tool is constituted, and interior mould 6 is made up of sieve plate, and its outer surface is fixed with screen cloth, sieve The aperture of net is 50 μm, and outer mold 8 is fenestral fabric, and the unilateral or radial dimension of grid hole is 60mm；
The guide shell mould 2 is placed in shaping pond 1 with axis in vertical state, and its upper end is provided with positioning step Played the role of positioning during for immersing shaping pond 1.
The interior mould 6 and outer mold 8 are taper barrel structure, and the two ends of inside and outside mould 6,8 are fitted in one respectively Rise, the annular space formed between the two i.e. vacuum forming chamber, the unilateral section of vacuum forming chamber radial direction is similar to triangle；Very Empty forming room has the shape and size being engaged with compound carbon fiber guide shell；Suction tube 5 is elongated along the interior longitudinal center of mould 6 Set；Suction hole is densely covered with suction tube 5, suction tube 5 connects vacuum tank 3 by connecting flexible pipe, and it is true that vacuum tank 3 reconnects water ring The empty formation of pump 4 vacuum suction apparatus；Open after vacuum suction apparatus, in the presence of suction tube 5, carbon fiber mixed slurry is true It is molded in empty forming room by aligned transfer, compound carbon fiber guide shell prefabrication 7 is made；
7) compound carbon fiber guide shell prefabrication 7 is taken out together with guide shell mould 2 from shaping pond 1, adopted With 150 DEG C of vapours or hot air 3 hours, it is dehydrated compound carbon fiber guide shell prefabrication 7 and completes non-fusible, no Dissolve processing；
8) the compound carbon fiber guide shell prefabrication 7 after dehydration and non-fusible, insoluble processing is stripped, and is then placed in true It is carbonized in empty stove or under an inert atmosphere, carburizing temperature is 1200 DEG C；Then graphitization processing is carried out, graphitization temperature is 2100 ℃；High performance compound carbon fiber guide shell 9 is obtained after carbonization or graphitization processing；
9) density of the compound carbon fiber guide shell 9 obtained by is 0.16g/cm3, thermal conductivity factor 0.22W/mK；Carbon contains Amount 99.6%, ash content 0.01%；(sample thickness is 45mm, under nitrogen protection, detection data at 1500 DEG C).
【Embodiment 2】
For the anti-airflow scouring and antioxygenic property of the compound carbon fiber guide shell 9 of increase, its service life is further improved； It is right【Embodiment 1】Obtained compound carbon fiber guide shell 9 is surface-treated, and surface treatment is comprised the following steps that：
1) by the machined progress surface grinding processing of compound carbon fiber guide shell 9, surfacing is made；
2) the compound inner and outer surfaces of carbon fiber guide shell 9 after being handled on surface through polishing brush 3~6 times binding agents respectively, Adhesive layer 10 is formed, binding agent uses conventional use of bonding agent；
3) the compound carbon fiber guide shell 9 of brushing adhesive layer 10 is put into heating furnace, with 5 DEG C/min heating rate 240 DEG C are warming up to, at this temperature constant temperature 1h, solidify adhesive layer 10；Then it is placed at 1700 DEG C, enters under an inert atmosphere again Row carbonization treatment, is made band coating compound carbon fiber guide shell.
Band coating compound carbon fiber guide shell obtained by the present embodiment is used 100 times on monocrystalline silicon stretching furnace, is not had Occur the compound corrosion-free phenomenon of carbon fiber guide shell inside the phenomenons such as coating stripping, cracking, foaming, coating.
【Embodiment 3】
In the present embodiment, the manufacture method of high performance compound carbon fiber guide shell is as follows：
1) chopped carbon fiber is prepared；Asphalt base carbon fiber is chopped, the chopped carbon fiber that average length is 80mm is obtained；
2) ground carbon fiber is prepared；Asphalt base carbon fiber is ground, the ground carbon fiber that average length is 180 μm is obtained；
3) by chopped carbon fiber and ground carbon fiber according to 50：50 weight ratio, is fully mixed using cyclone separator Close uniform, obtain mixed carbon fibre；
4) mixed carbon fibre and organic binder bond phenolic resin, etoh solvent are pressed 100：55：75 weight ratio is mixed Close, obtain carbon fiber mixed liquor；Carbon fiber mixed liquor is put into mesh bag, through mesh aperture for after 30 μm of mesh bag initial filter, then Using 60 DEG C of hot-air into mesh bag blow-through 30min, the solvent in carbon fiber mixed liquor is volatilized completely, obtain Surface coating The compound carbon fiber of organic binder bond；
5) by the compound carbon fiber of Surface coating organic binder bond and water, methylcellulose according to the ﹕ 1 of 6 ﹕ 100 parts by weight Ratio is sufficiently mixed, and forms uniform carbon fiber mixed slurry；
6) carbon fiber mixed slurry is molded using vacuum suction；Guide shell mould 2 used in vacuum suction is soaked Enter to be molded in pond 1；Guide shell mould 2 is made up of interior mould 6, the outer mold 8 being set in together, and interior mould 6 is by sieve plate system Into its outer surface is fixed with screen cloth, and the aperture of screen cloth is 70 μm, and outer mold 8 is fenestral fabric, the unilateral or radial direction of grid hole Size is 100mm；
In the presence of suction tube 5, carbon fiber mixed slurry is molded in vacuum forming room by aligned transfer, is made compound Carbon fiber guiding flow cartridge prefabrication 7；
7) compound carbon fiber guide shell prefabrication 7 is taken out together with guide shell mould 2 from shaping pond 1, adopted With 180 DEG C of vapours or hot air 2.5 hours, make compound carbon fiber guide shell prefabrication 7 be dehydrated and complete it is non-fusible, Insoluble processing；
8) the compound carbon fiber guide shell prefabrication 7 after dehydration and non-fusible, insoluble processing is stripped, and is then placed in true It is carbonized in empty stove or under an inert atmosphere, carburizing temperature is 1500 DEG C；Then graphitization processing is carried out, graphitization temperature is 2000 ℃；High performance compound carbon fiber guide shell 9 is obtained after carbonization or graphitization processing；
9) density of the compound carbon fiber guide shell 9 obtained by is 0.19g/cm3, thermal conductivity factor 0.20W/mK；Carbon contains Amount 99.7%, ash content 0.01%；(sample thickness is 45mm, under nitrogen protection, detection data at 1500 DEG C).
For the anti-airflow scouring and antioxygenic property of the compound carbon fiber guide shell 9 of increase, its service life is further improved； Obtained compound carbon fiber guide shell 9 is further surface-treated, surface treatment is comprised the following steps that：
1) by the machined progress surface grinding processing of compound carbon fiber guide shell 9, surfacing is made；
2) the compound inner and outer surfaces of carbon fiber guide shell 9 after being handled on surface through polishing brush 3~6 times binding agents respectively, Adhesive layer 10 is formed, binding agent uses conventional use of bonding agent；In the external pasting overcoat 11 of adhesive layer 10, protection Layer 11 is flexible graphite paper；
3) by brushing adhesive layer 10 and paste the compound carbon fiber guide shell 9 of overcoat 11 and be put into heating furnace, with 8 DEG C/min heating rate is warming up to 300 DEG C, constant temperature 1h, solidifies adhesive layer 10 at this temperature；Then 1800 DEG C are placed in again Under, carbonization treatment is carried out under an inert atmosphere, and the compound carbon fiber guide shell with overcoat is made.
The compound carbon fiber guide shell with overcoat obtained by the present embodiment is used 100 times on monocrystalline silicon stretching furnace, There is not the compound corrosion-free phenomenon of carbon fiber guide shell inside the phenomenons such as overcoat stripping, cracking, foaming, overcoat.
It can be proved through above example, band coating or with overcoat compound carbon fiber guide shell can prevent miscellaneous in stove Matter gas is directly contacted with compound carbon fiber guide shell surface, is prevented it from corroding and anti-airflow scouring, is made with excellent antioxygen Change and corrosion resistance, the service life of compound carbon fiber guide shell can be significantly improved.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should all be included within the scope of the present invention.

Claims (8)

1. a kind of high-performance is combined the manufacture method of carbon fiber guide shell, it is characterised in that comprise the following steps：
1) chopped carbon fiber is prepared；Carbon fiber is chopped, the chopped carbon fiber that average length is 1~80mm is obtained；
2) ground carbon fiber is prepared；Carbon fiber is ground, the ground carbon fiber that average length is 100~800 μm is obtained；
3) chopped carbon fiber and ground carbon fiber are filled according to 10~90 ﹕ 90~10 weight ratio using cyclone separator Divide well mixed, obtain mixed carbon fibre；
4) mixed carbon fibre is mixed with organic binder bond, solvent by the ﹕ 3~920 of 100 ﹕ 20~230 weight ratio, obtained Carbon fiber mixed liquor；Carbon fiber mixed liquor is put into mesh bag, through mesh aperture for after 1~50 μm of mesh bag initial filter, then used 50~60 DEG C of hot-air, 10~30min of blow-through into mesh bag, makes the solvent in carbon fiber mixed liquor volatilize completely, obtains surface Coat the compound carbon fiber of organic binder bond；
5) by the compound carbon fiber of Surface coating organic binder bond and water, dispersant according to the ﹕ 0.1~2 of 0.3~6 ﹕ 100 weight Part ratio is sufficiently mixed, and forms uniform carbon fiber mixed slurry；
6) carbon fiber mixed slurry is molded using vacuum suction；Guide shell mould used in vacuum suction is immersed into shaping Chi Zhong, guide shell mould is made up of interior mould, the outer mold being set in together, and inside and outside mould is taper barrel structure； Wherein interior mould is made up of sieve plate, and its outer surface is fixed with screen cloth, and the aperture of screen cloth is 30~200 μm, and outer mold is latticed Structure, the unilateral or radial dimension of grid hole is 30~100mm；
The guide shell mould is placed in shaping pond with axis in vertical state, and its upper end is used to soak provided with positioning step Played the role of positioning when entering to be molded pond；
Vacuum forming chamber is formed between the interior mould, outer mold, and vacuum forming chamber has and compound carbon fiber guide shell phase The shape and size of cooperation；Suction tube is set along interior mould longitudinal center is elongated；In the presence of suction tube, carbon fiber mixing slurry Material is molded in vacuum forming room by aligned transfer, and compound carbon fiber guide shell prefabrication is made；
7) compound carbon fiber guide shell prefabrication is taken out together with guide shell mould from shaping pond, using 100~ 240 DEG C of vapours or hot air 2~5 hours, are dehydrated compound carbon fiber guide shell prefabrication and complete non-fusible, no Dissolve processing；
8) the compound carbon fiber guide shell prefabrication after dehydration and non-fusible, insoluble processing is stripped, and is then placed in vacuum drying oven In or be carbonized under an inert atmosphere, carburizing temperature be 800~1800 DEG C；Also graphitization processing, stone can be carried out according to requirements Inkization temperature is 1800~2500 DEG C；High performance compound carbon fiber guide shell is obtained after carbonization or graphitization processing；
9) density of the compound carbon fiber guide shell obtained by is 0.1~0.35g/cm3, thermal conductivity factor is less than 0.35W/mK；
10) selectively compound carbon fiber guide shell is surface-treated as needed；To increase its anti-airflow scouring and resist Oxidation susceptibility, improves its service life；What is be surface-treated concretely comprises the following steps：
A. to being combined the machined carry out surface grinding of carbon fiber guide shell；
B., as needed can be further in bonding in the inside/outside or inner and outer surfaces brushing adhesive layer of compound carbon fiber guide shell Oxidant layer external pasting overcoat, overcoat is flexible graphite paper/carbon cloth, carbon cloth or graphitic sheet, can not also paste protection Layer；
C. to being handled through b step after compound carbon fiber guide shell carry out curing process, then carry out the/graphitization processing that is carbonized, obtain To surface treated compound carbon fiber guide shell.
2. a kind of high-performance according to claim 1 is combined the manufacture method of carbon fiber guide shell, it is characterised in that pass through Change the mixed proportion of organic binder bond, chopped carbon fiber and ground carbon fiber, and vacuum during vacuum suction shaping, can The density for being combined carbon fiber guide shell is accurately adjusted, to meet the use requirement under different condition.
3. a kind of high-performance according to claim 1 is combined the manufacture method of carbon fiber guide shell, it is characterised in that described Prepare carbon fiber used when chopped carbon fiber or ground carbon fiber fine for asphalt base carbon fiber, viscose base carbon fibre, PAN bases carbon One or more in dimension, be preferably chopped asphalt base carbon fiber, is mixed in any proportion during from more than one carbon fibers.
4. a kind of high-performance according to claim 1 is combined the manufacture method of carbon fiber guide shell, it is characterised in that described Mesh bag is made up of non-woven fabrics, synthetic cotton, polypropylene, Teflon or polyester material, 1~50 μm, preferably 5~30 μm.
5. a kind of high-performance according to claim 1 is combined the manufacture method of carbon fiber guide shell, it is characterised in that described The grid hole of outer mold is shaped as in triangle, circle, square, rectangle, rhombus, regular polygon or irregular polygon It is a kind of.
6. a kind of high-performance according to claim 1 is combined the manufacture method of carbon fiber guide shell, it is characterised in that described Organic binder bond is selected from phenolic resin, epoxy resin, furane resins, Lauxite, vinyl ester resin, polyamide, acrylic acid One kind or one kind in resin, polyethylene, polypropylene, ethylene propylene copolymer, polystyrene, monose, polysaccharide, pitch, tar Any of the above is mixed.
7. a kind of high-performance according to claim 1 is combined the manufacture method of carbon fiber guide shell, it is characterised in that described Solvent is selected from methanol, ethanol, propyl alcohol, ethylene glycol, propane diols, glycerine, ether, furfuryl alcohol, furfural, acetone, benzene, toluene, furans Any mixing of one or more in methanol, furtural.
8. a kind of high-performance according to claim 1 is combined the manufacture method of carbon fiber guide shell, it is characterised in that described It is fine that dispersant is selected from methylcellulose, carboxymethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethylmethylcellulose, methylol Tie up element, ethyl cellulose, cellulose ether, methylethylcellulose, Hydroxypropyl ethyl cellulose, Hydroxyethylethyl fiber One or more in element, hydroxymethyl ethylcellulose, polyvinyl alcohol, Pioloform, polyvinyl acetal, starch, modified starch are any Mixing.
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CN108101569A (en) * 2018-01-24 2018-06-01 航天睿特碳材料有限公司 A kind of preparation method of high temperature furnace used novel chopped fibre dimension insulation quilt cylinder
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