CN101949481B - Method for preparing wound heat-insulating drum - Google Patents

Method for preparing wound heat-insulating drum Download PDF

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CN101949481B
CN101949481B CN2010102872529A CN201010287252A CN101949481B CN 101949481 B CN101949481 B CN 101949481B CN 2010102872529 A CN2010102872529 A CN 2010102872529A CN 201010287252 A CN201010287252 A CN 201010287252A CN 101949481 B CN101949481 B CN 101949481B
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resin
felt
coiling
phenolic
heat
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CN101949481A (en
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邵海成
肖志超
彭志刚
苏君明
侯卫权
白建雄
赵俊
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Chaoma Science & Technology Co Ltd Xian
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Chaoma Science & Technology Co Ltd Xian
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Abstract

The invention relates to a method for preparing a wound heat-insulating drum. The method comprises the following steps of: 1, cutting a soft felt, pre-dipping and performing air drying; 2, gumming carbon cloth; 3, brushing an adhesive on the soft felt and the carbon cloth; 4, winding; 5, curing; 6, repairing an end face; 7, sealing holes of a coating; 8, performing carbonization treatment; and 9, performing high-temperature treatment and cooling along with a furnace to obtain the wound heat-insulating drum. The method has the advantages of simple process and batch production; and the prepared wound heat-insulating drum has the advantages of difficult layering, good mechanical property, superior high-temperature dimensional stability, low thermal conductivity and low ash content. The method reduces the replacement frequency of the heat-insulating drum and has great significance in prolonging the service life of the heat-insulating drum in high-temperature furnace equipment.

Description

A kind of preparation method of the heat-preservation cylinder of reeling
Technical field
The invention belongs to high temperature furnace used thermal field material accessory technical field, be specifically related to a kind of preparation method of the heat-preservation cylinder of reeling.
Background technique
High Temperature Furnaces is widely used as one of field common equipments such as powder metallurgy, new material, new energy, national defense industry.High temperature furnace used thermal field material has function and structure double effects, and as consumable part, annual consumption is huge.In recent years, because performances such as the mechanical property of the progress of carbon/carbon composite preparation technology and self excellence, thermal insulation property and anticorrosive, anti-airflow scouring make high temperature furnace used thermal field material progressively turn to carbon/carbon composite by graphite material.
At present, the coiling and molding mode of high temperature furnace used heat-preservation cylinder is divided into the continuous reeling moulding and the mode of coiling and molding successively.The problem that the continuous reeling molding mode exists is: difficulty is repaired in the polishing of insulation quilt inner and outer surface changeover portion, and outward appearance is not too attractive in appearance; On the other hand, the heat-preservation cylinder stress in charing, high-temperature processing technology process behind employing the method coiling and molding is difficult to discharge, and causes the product layering.Successively the problem that exists of coiling and molding mode is: owing to be successively to reel, layer with layer between combination force strong inadequately, in charing, high-temperature processing technology process, easily cause the product layering equally.
The preparation method of a kind of monocrystalline silicon draw machines with carbon/carbon thermal insulation cover disclosed in the patent of invention CN100497753C of bulletin on June 10th, 2009, this patent adopts the charcoal fiber not have latitude cloth and the thin fibrous web tire replaces the hoop coiling, radially the insulation cover precast body made of acupuncture is a base substrate, the insulation cover that makes through follow-up densification technique.Among invention disclosed patent on the 24th CN101463500A a kind of high temperature furnace fire resistant heat preserving cover and production technology thereof were disclosed June in 2009, it is that the high density skin is low density that this patent adopts nexine, middle precast body needling structure for slow infiltration layer makes insulation cover through follow-up densification technique.Disclose a kind of high temperature furnace-grade curing carbon fiber thermal insulating material and production technology thereof October in 2009 among invention disclosed patent on the 7th CN101550017A, process route is the preparation of needle-punched web tire structure precast body, densification, purifying, machining, top layer processing, purifies the impurity processing.Disclose a kind of hard composite graphite felt for single crystal furnace manufacture process of thermal insulation bucket among invention disclosed patent on the 10th CN101664955A March in 2010, its surface adopts SiC, plumbago, charcoal fiber blends filler coatings to handle.Disclose a kind of vacuum furnace with hard composite carbon felt/graphite felt heat-insulation and heat-preservation material structure in the utility model patent CN201547452U of on August 11st, 2010 bulletin, the surface by graphite foil, charcoal cloth, coating viscose glue being compounded in compound charcoal felt/graphite felt is to reach the surface-treated effect.A kind of thermal insulating material of being made up of protective coating and sclerosis felt is disclosed among the US Patent specification US20040076810.
The manufacture method of the thermal insulating material that relates in the above-mentioned patent, though have good integrity and usability,, cost of production is higher and the manufacture cycle is long.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned the deficiencies in the prior art, and the preparation method of the coiling heat-preservation cylinder that a kind of technology is simple, cost is low, with short production cycle is provided, and the heat-preservation cylinder of preparation is difficult for layering, high insulating effect.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method of the heat-preservation cylinder of reeling is characterized in that this method may further comprise the steps:
Step 1, adopt the low soft felt of impurity content, and soft felt is carried out cutting; Soft felt after the cutting is placed gumming machine, add impregnating agent and carry out pre-impregnation, then the soft felt after the pre-impregnation is dried; Described soft felt is polyacrylonitrile base carbon felt, polyacrylonitrile graphite felt, viscose glue base charcoal felt or viscose glue base graphite felt, and require charcoal felt ash content less than 2000ppm, require the graphite felt ash content less than 1000ppm, described impregnating agent is the mixed glue solution of mixed glue solution, acetone and furfural acetone resin of mixed glue solution, alcohol and furfural acetone resin of mixed glue solution, acetone and phenolic resinoid of alcohol and phenolic resinoid or the mixed glue solution of water and water soluble phenol resin, and the mass fraction of phenolic resinoid, furfural acetone resin or water soluble phenol resin is 20%～80% in the mixed glue solution;
Step 2, charcoal is arranged in the gumming machine, adds the dipping solution impregnation; Twill that described charcoal cloth is 1K～12K or plain weave carbon fiber sheet, described dipping solution is the mixed glue solution of alcohol and phenolic resinoid or the mixed glue solution of acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 20%～80% in the dipping solution, and wherein K refers to tow thousand radicals;
The upper and lower surface brushing binder of the charcoal cloth in the upper and lower surface of step 3, the soft felt after in step 1, drying and the step 2 behind the impregnation; Described binder is the mixture of phenolic resinoid and granulated filler, and wherein granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 5%～30% in the binder;
Step 4, the charcoal cloth in the coiling step 3 of coiling frock (1) outside behind the brushing binder are as inner protective layer (2); soft felt in the step 3 of reeling then behind the brushing binder is as thermal insulation layer (3); the medial axis of the coiling direction of described soft felt and coiling frock (1) is not parallel, and the angle of the medial axis of the coiling direction of the soft felt of adjacent two layers (5) and coiling frock (1) is respectively α 1And α 2, α 1And α 2Opposite number each other, the charcoal cloth in the step 3 of reeling again at last behind the brushing binder is as external protection (4); The medial axis of the coiling direction of described charcoal cloth and coiling frock (1) is not parallel;
Step 5, be to solidify 2h～10h under 150 ℃～190 ℃ the condition with the coiling frock after reeling in the step 4 in temperature;
Step 6, obtain semi-finished product with carrying out the end face reparation again after the coiling frock cutting after solidifying in the step 5;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material described in the step 6 and handle, the half-finished end face after the coating sealing of hole is handled forms hole sealing coating; Described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 30%～80% in the cladding material, the mass fraction of thinner is 15%～45% in the cladding material, and the mass fraction of sealing of hole particle is 5%～25% in the cladding material;
Step 8, the product after the coating sealing of hole is handled in the step 7 being placed retort, is to be warming up to 700 ℃～1200 ℃ under the condition of 10 ℃/h～180 ℃/h to carry out charing and handle at heating rate;
Step 9, the product after charing is handled in the step 8 being placed the high-temperature heat treatment stove, is to be warming up to 1600 ℃～2500 ℃ under the condition of 5 ℃/h～200 ℃/h to carry out high temperature processing at heating rate, obtains the heat-preservation cylinder of reeling with the stove cooling then.
Above-mentioned phenolic resinoid is ammonia phenolic resin, ba phenolic resin, boron bakelite resin or water soluble phenol resin.
The fabric width of soft felt cutting described in the above-mentioned steps one is 30mm～200mm; The consumption of impregnating agent described in the step 1 is with till flooding soft felt, and the time of drying is 5h～60h.
The consumption of dipping solution described in the above-mentioned steps two is with till flooding charcoal cloth.
The charcoal cloth number of plies of inner protective layer described in the above-mentioned steps four (2) is 1 layer～20 layers; The thickness of thermal insulation layer described in the step 4 (3) is 10mm～200mm; The charcoal cloth number of plies of external protection described in the step 4 (4) is 1 layer～10 layers.
Half-finished height described in the above-mentioned steps six is 50mm～1000mm.
The thickness of hole sealing coating described in the above-mentioned steps seven is 0.5mm～2mm.
The present invention compared with prior art has the following advantages:
(1) it is low, with short production cycle to adopt invention coiling heat-preservation cylinder for preparing and the heat-preservation cylinder that adopts the precast body moulding to compare cost of production; To compare overall performance good, easy to operate with soft felt, significantly reduced the number of times of changing thermal insulating material.
(2) the coiling heat-preservation cylinder of employing the present invention preparation adopts manual drawing and machine drawing all can, adopt the mode of the little angled coiling and molding of soft felt rug and frock medial axis of fabric width, increased the combination force between layer and the layer, in the process of moulding and use, be not easy layering, manufacturing process is simple, workable, manufacturing cycle is short.
(3) thermal conductivity of the coiling heat-preservation cylinder of employing the present invention preparation is less than 5W/mK, and ash content has the good high-temperature dimensional stability less than 2000ppm, uses no fugitive constituent to produce in High Temperature Furnaces, can not pollute product.
Description of drawings
Fig. 1 is the process flow diagram that the present invention prepares the coiling heat-preservation cylinder.
Fig. 2 is the structural representation of the prepared coiling heat-preservation cylinder of the present invention.
Fig. 3 is the schematic representation of the soft felt coiling direction of the present invention.
Description of reference numerals:
1-coiling frock; The 2-inner protective layer; The 3-thermal insulation layer;
The 4-external protection; The soft felt of 5-;
α 1The angle of the coiling direction of-soft felt one and coiling frock medial axis;
α 2The angle of the coiling direction of-soft felt two and coiling frock medial axis.
Embodiment
Embodiment 1
Step 1, adopt the polyacrylonitrile base carbon felt of ash content less than 2000ppm, the polyacrylonitrile base carbon felt is cut to the 30mm fabric width to be placed in the gumming machine, with impregnating agent the polyacrylonitrile base carbon felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 20% in the mixed glue solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, the impregnating agent consumption dries 5h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the twill charcoal of 1K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 20% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 5% in the binder;
Step 4,1 layer of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 30 ° and-30 °, insulation layer thickness is 10mm, and the charcoal cloth of the 1 layer of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 2h under 150 ℃ the condition in temperature;
Carry out the end face reparation after step 6, the coiling frock cutting after will solidifying, obtain highly being the semi-finished product of 50mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 0.5mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 30% in the cladding material, the mass fraction of thinner is 45% in the cladding material, and the mass fraction of sealing of hole particle is 25% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 700 ℃ under the condition of 10 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 1600 ℃ under the condition of 5 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 2
Step 1, adopt the polyacrylonitrile graphite felt of ash content less than 1000ppm, the polyacrylonitrile graphite felt is cut to the 120mm fabric width to be placed in the gumming machine, with impregnating agent the polyacrylonitrile graphite felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 50% in the mixed glue solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, the impregnating agent consumption dries 60h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the plain weave charcoal of 1K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 50% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 30% in the binder;
Step 4,10 layers of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 60 ° and-60 °, insulation layer thickness is 200mm, and the charcoal cloth of the 5 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 6h under 170 ℃ the condition in temperature;
Carry out the end face reparation after step 6, the coiling frock cutting after will solidifying, obtain highly being the semi-finished product of 410mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 1mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 80% in the cladding material, the mass fraction of thinner is 15% in the cladding material, and the mass fraction of sealing of hole particle is 5% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 850 ℃ under the condition of 80 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 1900 ℃ under the condition of 100 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 3
Step 1, adopt the viscose glue base graphite felt of ash content less than 1000ppm, viscose glue base graphite felt is cut to the 110mm fabric width to be placed in the gumming machine, with impregnating agent viscose glue base graphite felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of alcohol or acetone and furfural acetone resin, the mass fraction of furfural acetone resin is 80% in the mixed glue solution, the impregnating agent consumption dries 32h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the plain weave charcoal of 12K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 80% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 17% in the binder;
Step 4,20 layers of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 90 ° and-90 °, insulation layer thickness is 105mm, and the charcoal cloth of the 10 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 10h under 190 ℃ the condition in temperature;
Carry out the end face reparation after step 6, the coiling frock cutting after will solidifying, obtain highly being the semi-finished product of 1000mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 2mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 55% in the cladding material, the mass fraction of thinner is 35% in the cladding material, and the mass fraction of sealing of hole particle is 15% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 1200 ℃ under the condition of 180 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 2500 ℃ under the condition of 200 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 4
Step 1, adopt the viscose glue base charcoal felt of ash content less than 2000ppm, viscose glue base charcoal felt is cut to the 200mm fabric width to be placed in the gumming machine, with impregnating agent viscose glue base charcoal felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of alcohol or acetone and furfural acetone resin, the mass fraction of furfural acetone resin is 20% in the mixed glue solution, the impregnating agent consumption dries 10h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the twill charcoal of 12K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 20% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 20% in the binder;
Step 4,11 layers of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 50 ° and-50 °, insulation layer thickness is 100mm, and the charcoal cloth of the 6 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 5h under 160 ℃ the condition in temperature;
The end face reparation is carried out in step 6, the coiling frock cutting after will solidifying, and obtains highly being the semi-finished product of 525mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 1.25mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 50% in the cladding material, the mass fraction of thinner is 30% in the cladding material, and the mass fraction of sealing of hole particle is 20% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 950 ℃ under the condition of 95 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 2050 ℃ under the condition of 102 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 5
Step 1, adopt the viscose glue base graphite felt of ash content less than 1000ppm, viscose glue base graphite felt is cut to the 50mm fabric width to be placed in the gumming machine, with impregnating agent viscose glue base graphite felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of water and water soluble phenol resin, the mass fraction of water soluble phenol resin is 20% in the mixed glue solution, the impregnating agent consumption dries 33h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the plain weave charcoal of 6K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 50% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 30% in the binder;
Step 4,5 layers of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 40 ° and-40 °, insulation layer thickness is 150mm, and the charcoal cloth of the 10 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 4h under 180 ℃ the condition in temperature;
Step 6, the coiling frock after will solidifying are carried out the end face reparation, obtain highly being the semi-finished product of 300mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 1.5mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 30% in the cladding material, the mass fraction of thinner is 45% in the cladding material, and the mass fraction of sealing of hole particle is 25% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 1000 ℃ under the condition of 50 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 2300 ℃ under the condition of 200 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 6
Step 1, adopt the polyacrylonitrile graphite felt of ash content less than 1000ppm, the polyacrylonitrile graphite felt is cut to the 115mm fabric width to be placed in the gumming machine, with impregnating agent the polyacrylonitrile graphite felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of water and water soluble phenol resin, the mass fraction of water soluble phenol resin is 80% in the mixed glue solution, the impregnating agent consumption dries 20h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the twill charcoal of 6K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 80% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 10% in the binder;
Step 4,15 layers of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 45 ° and-45 °, insulation layer thickness is 50mm, and the charcoal cloth of the 3 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 10h under 160 ℃ the condition in temperature;
Step 6, the coiling frock after will solidifying are carried out the end face reparation, obtain highly being the semi-finished product of 800mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 0.8mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 60% in the cladding material, the mass fraction of thinner is 30% in the cladding material, and the mass fraction of sealing of hole particle is 10% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 1200 ℃ under the condition of 120 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 1700 ℃ under the condition of 50 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 7
Step 1, adopt the polyacrylonitrile base carbon felt of ash content less than 2000ppm, the polyacrylonitrile base carbon felt is cut to the 150mm fabric width to be placed in the gumming machine, with impregnating agent the polyacrylonitrile base carbon felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of alcohol or acetone and furfural acetone resin, the mass fraction of furfural acetone resin is 50% in the mixed glue solution, the impregnating agent consumption dries 40h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the twill charcoal of 3K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 50% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 5% in the binder;
Step 4,8 layers of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 10 ° and-10 °, insulation layer thickness is 180mm, and the charcoal cloth of the 2 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 3h under 190 ℃ the condition in temperature;
Step 6, the coiling frock after will solidifying are carried out the end face reparation, obtain highly being the semi-finished product of 600mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 1.2mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 80% in the cladding material, the mass fraction of thinner is 15% in the cladding material, and the mass fraction of sealing of hole particle is 5% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 1100 ℃ under the condition of 100 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 1800 ℃ under the condition of 150 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 8
Step 1, adopt the viscose glue base charcoal felt of ash content less than 2000ppm, viscose glue base charcoal felt is cut to the 180mm fabric width to be placed in the gumming machine, with impregnating agent viscose glue base charcoal felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of water and water soluble phenol resin, the mass fraction of water soluble phenol resin is 50% in the mixed glue solution, the impregnating agent consumption dries 50h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the plain weave charcoal of 3K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 20% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 18% in the binder;
Step 4,1 layer of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 70 ° and-70 °, insulation layer thickness is 200mm, and the charcoal cloth of the 4 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 8h under 150 ℃ the condition in temperature;
Step 6, the coiling frock after will solidifying are carried out the end face reparation, obtain highly being the semi-finished product of 1000mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 2mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 30% in the cladding material, the mass fraction of thinner is 45% in the cladding material, and the mass fraction of sealing of hole particle is 25% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 800 ℃ under the condition of 150 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 2000 ℃ under the condition of 120 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.
Embodiment 9
Step 1, adopt the polyacrylonitrile base carbon felt of ash content less than 2000ppm, the polyacrylonitrile base carbon felt is cut to the 100mm fabric width to be placed in the gumming machine, with impregnating agent the polyacrylonitrile base carbon felt is carried out pre-impregnation, described impregnating agent is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 80% in the mixed glue solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, the impregnating agent consumption dries 25h with the soft felt after the pre-impregnation then with till flooding soft felt;
Step 2, the twill charcoal of 6K is arranged in (wherein K refers to tow thousand radicals) in the gumming machine, with dipping solution charcoal cloth is carried out impregnation, described dipping solution is the mixed glue solution of alcohol or acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 80% in the dipping solution, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, and the dipping solution consumption is with till flooding charcoal cloth;
Step 3, the soft felt upper and lower surface brushing binder after drying, charcoal cloth upper and lower surface brushing binder behind impregnation, described binder is the mixture of phenolic resinoid and granulated filler, wherein phenolic resinoid is ammonia phenolic resin, boron bakelite resin, ba phenolic resin or water soluble phenol resin, granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 17% in the binder;
Step 4,12 layers of the charcoal cloth of coiling frock (1) outside coiling brushing binder as inner protective layer (2), the soft felt of the brushing binder of reeling then is as thermal insulation layer (3), the angle α of the coiling direction of the soft felt of adjacent two layers (5) and the medial axis of coiling frock 1And α 2Be respectively 20 ° and-20 °, insulation layer thickness is 80mm, and the charcoal cloth of the 8 layers of brushing binder of reeling again at last is as external protection (4);
Step 5, the coiling frock after will reeling are to solidify 2h under 180 ℃ the condition in temperature;
Carry out the end face reparation after step 6, the coiling frock cutting after will solidifying, obtain highly being the semi-finished product of 100mm;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material and handle, it is the hole sealing coating of 1.8mm that end face forms thickness, described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 55% in the cladding material, the mass fraction of thinner is 35% in the cladding material, and the mass fraction of sealing of hole particle is 15% in the cladding material;
Step 8, the product after the coating sealing of hole handled place retort, at heating rate are to be warming up to 900 ℃ under the condition of 60 ℃/h to carry out charing and handle;
Step 9, the product after the charing being placed the high-temperature heat treatment stove, is to be warming up to 2000 ℃ under the condition of 150 ℃/h to carry out high temperature processing at heating rate, obtains thermal conductivity less than 5W/mK with the stove cooling then, and ash content is less than the coiling heat-preservation cylinder of 2000ppm.

Claims (7)

1. the preparation method of the heat-preservation cylinder of reeling is characterized in that, this method may further comprise the steps:
Step 1, adopt the low soft felt of impurity content, and soft felt is carried out cutting; Soft felt after the cutting is placed gumming machine, add impregnating agent and carry out pre-impregnation, then the soft felt after the pre-impregnation is dried; Described soft felt is polyacrylonitrile base carbon felt, polyacrylonitrile graphite felt, viscose glue base charcoal felt or viscose glue base graphite felt, and require charcoal felt ash content less than 2000ppm, require the graphite felt ash content less than 1000ppm, described impregnating agent is the mixed glue solution of mixed glue solution, acetone and furfural acetone resin of mixed glue solution, alcohol and furfural acetone resin of mixed glue solution, acetone and phenolic resinoid of alcohol and phenolic resinoid or the mixed glue solution of water and water soluble phenol resin, and the mass fraction of phenolic resinoid, furfural acetone resin or water soluble phenol resin is 20%～80% in the mixed glue solution;
Step 2, charcoal is arranged in the gumming machine, adds the dipping solution impregnation; Twill that described charcoal cloth is 1K～12K or plain weave carbon fiber sheet, described dipping solution is the mixed glue solution of alcohol and phenolic resinoid or the mixed glue solution of acetone and phenolic resinoid, the mass fraction of phenolic resinoid is 20%～80% in the dipping solution, and wherein K refers to tow thousand radicals;
The upper and lower surface brushing binder of the charcoal cloth in the upper and lower surface of step 3, the soft felt after in step 1, drying and the step 2 behind the impregnation; Described binder is the mixture of phenolic resinoid and granulated filler, and wherein granulated filler is plumbago, silica, silicon carbide or silica flour, and the mass fraction of granulated filler is 5%～30% in the binder;
Step 4, the charcoal cloth in the coiling step 3 of coiling frock (1) outside behind the brushing binder are as inner protective layer (2); soft felt in the step 3 of reeling then behind the brushing binder is as thermal insulation layer (3); the medial axis of the coiling direction of described soft felt and coiling frock (1) is not parallel, and the angle of the medial axis of the coiling direction of the soft felt of adjacent two layers (5) and coiling frock (1) is respectively α 1And α 2, α 1And α 2Opposite number each other, the charcoal cloth in the step 3 of reeling again at last behind the brushing binder is as external protection (4); The medial axis of the coiling direction of described charcoal cloth and coiling frock (1) is not parallel;
Step 5, be to solidify 2h～10h under 150 ℃～190 ℃ the condition with the coiling frock after reeling in the step 4 in temperature;
Step 6, obtain semi-finished product with carrying out the end face reparation again after the coiling frock cutting after solidifying in the step 5;
Step 7, carry out the coating sealing of hole at half-finished end coating cladding material described in the step 6 and handle, the half-finished end face after the coating sealing of hole is handled forms hole sealing coating; Described cladding material is the mixing milk of resin, thinner and sealing of hole particle, wherein resin is phenolic resin or water-soluble resin, thinner is alcohol or acetone, the sealing of hole particle is plumbago, silicon carbide or silica flour, the mass fraction of resin is 30%～80% in the cladding material, the mass fraction of thinner is 15%～45% in the cladding material, and the mass fraction of sealing of hole particle is 5%～25% in the cladding material;
Step 8, the product after the coating sealing of hole is handled in the step 7 being placed retort, is to be warming up to 700 ℃～1200 ℃ under the condition of 10 ℃/h～180 ℃/h to carry out charing and handle at heating rate;
Step 9, the product after charing is handled in the step 8 being placed the high-temperature heat treatment stove, is to be warming up to 1600 ℃～2500 ℃ under the condition of 5 ℃/h～200 ℃/h to carry out high temperature processing at heating rate, obtains the heat-preservation cylinder of reeling with the stove cooling then.
2. the preparation method of a kind of heat-preservation cylinder of reeling according to claim 1 is characterized in that, described phenolic resinoid is ammonia phenolic resin, ba phenolic resin, boron bakelite resin or water soluble phenol resin.
3. the preparation method of a kind of heat-preservation cylinder of reeling according to claim 1 is characterized in that, the fabric width of soft felt cutting described in the step 1 is 30mm～200mm; The consumption of impregnating agent described in the step 1 is with till flooding soft felt, and the time of drying is 5h～60h.
4. the preparation method of a kind of heat-preservation cylinder of reeling according to claim 1 is characterized in that, the consumption of dipping solution described in the step 2 is with till flooding charcoal cloth.
5. the preparation method of a kind of heat-preservation cylinder of reeling according to claim 1 is characterized in that, the charcoal cloth number of plies of inner protective layer described in the step 4 (2) is 1 layer～20 layers; The thickness of thermal insulation layer described in the step 4 (3) is 10mm～200mm; The charcoal cloth number of plies of external protection described in the step 4 (4) is 1 layer～10 layers.
6. the preparation method of a kind of heat-preservation cylinder of reeling according to claim 1 is characterized in that, half-finished height described in the step 6 is 50mm～1000mm.
7. the preparation method of a kind of heat-preservation cylinder of reeling according to claim 1 is characterized in that, the thickness of hole sealing coating described in the step 7 is 0.5mm～2mm.
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