CN109516824A - The preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic - Google Patents
The preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic Download PDFInfo
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- CN109516824A CN109516824A CN201811516243.5A CN201811516243A CN109516824A CN 109516824 A CN109516824 A CN 109516824A CN 201811516243 A CN201811516243 A CN 201811516243A CN 109516824 A CN109516824 A CN 109516824A
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Abstract
The invention discloses a kind of preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic, include the following steps: Step 1: being laid with the heat-insulated basal layer pottery mud/powder of one layer of micropore, the formation heat-insulated basal layer of micropore in idiosome mold bottom；Step 2: the cotton fiber base carbon filament after surface coated treatment is laid immediately on the heat-insulated basal layer pottery mud/powder of micropore, and with idiosome powder uniform fold, idiosome powder applies material with a thickness of the 0.2~0.3 of idiosome mold overall thickness, presses embryo after smooth, forms cotton fiber base carbon filament electrothermal layer；Step 3: above-mentioned idiosome to be carried out to pressure embryo or sizing in idiosome mold, depanning after the completion of embryo or sizing is pressed to obtain semi-finished product；Kiln is put into after drying to be sintered to obtain finished product；Step 4: the glaze slip of ceramic glaze is applied on finished product, sintering obtains electric ceramic plate after drying.The electric ceramic that cotton fiber base carbon filament of the invention is prepared as thermo electric material is easy to use, and cotton fiber base carbon filament electric conversion efficiency is high.
Description
Technical field
The present invention relates to a kind of preparation methods of electric ceramic, and in particular to a kind of one sinter molding cotton fiber base carbon filament
The preparation method of electric ceramic.
Background technique
At present there are mainly three types of traditional individual family heating systems: radiator type hot-water heating, air-conditioning or external heating wire
(piece), floor heating.However disadvantage is also clearly: hot-water heating heat dissipation of terminal mode not only influences house dress based on external cooling fin
The hot-water circulation pipe for repairing structure and pre-buried wall has security risk there are risks such as aging burn into leakages；Air-conditioning preheating
Time is long, and energy consumption is higher, goes out hot spot positioned at 1.5 meters or more, comfort level is poor, and head heat is felt cold, and leads to air conditioner disease；Heating wire
Formula (being commonly called as Sunny) heating is that point type resistance wire heats, and the heat-generating pipe of open fire formula cannot cover, and be easy to cause scald and fire
Calamity, security risk are extremely prominent；It in addition is exactly to use more extensive ground heating type heating currently on the market there are also one kind.Tradition
Ground heating type heating in, line with heating function is substantially to be made of metallic resistance silk or carbon fiber, and be usually under floor face it is embedded
Heat is simultaneously dispersed into interior by earth's surface and carries out heating heat preservation to interior by line with heating function, line with heating function heating power, existing for
Problem is: (1) electric heating utilization rate is not high, and metal electric heating silk electric heating conversion efficiency generally only has 60~80%；(2) metal electric heating
Silk is conductive also to generate the electromagnetic radiation being largely harmful to the human body, and is unfavorable for health care；(3) construction is complicated, since line with heating function is pre-
Buried depth degree is up to 20~60mm, and the heat on line with heating function periphery is high but to be transmitted to the heat that ground comes out low；(4) heat of indoor heating
Amount distributes uneven and inefficiency, the awkward situation of " oneself is not warm, and heat is perspired downstairs " formula often occurs.
In view of the limitation of existing heating equipment, some novel heating equipments are born, wherein electric ceramic plate is
A kind of advanced heating equipment.The development of electric ceramic plate is rapider, still, also has many incomplete places, mostly
The heating element of number electric ceramic plates is mounted in the mounting groove of ceramic tile bottom, has air between heating element and ceramic tile, and two
There is no seamless interfacing between person, the thermal coefficient of air is very small, thus, heat transfer efficiency is low, and heat loss is big.Chinese patent Shen
Numbers 201611002581.8 carbon fibre fever tablet ceramic tile and its production method please be disclosed, the ceramic tile is by wall brick ontology, carbon fiber
Fever tablet and heat-generating pipe, polyurethane foam composition are tieed up, carbon fiber heating piece is mounted in heat-generating pipe, has sky in heat-generating pipe
Gas causes heat transfer efficiency low；Chinese Patent Application No. 201720123171.X discloses a kind of carbon fiber heating ceramic tile,
It is that carbon fiber exothermic wire is placed in the groove of heating layer.It is this that heater is placed in heat-generating pipe or is placed in heating layer groove
Mode for heat transmitting be unfavorable because this arrangement mode leads to there is a large amount of air around heater,
The heat transfer efficiency of air is excessively poor, thus, seriously affect the rate and quality of heat transfer.
In the preparation of electric ceramic plate, the selection of exothermic material (element) is key, and the superiority and inferiority of exothermic material decides
The quality of electric ceramic plate.Cotton fiber is a kind of widely distributed natural fiber, and main ingredient is cellulose, and cellulose is day
Right high-molecular compound, the chemical structural formula of cellulose are that basic structural unit repeats to constitute by α glucose, element composition
For carbon 44.44%, hydrogen 6.17%, oxygen 49.39%.The degree of polymerization of cotton fiber is a kind of resourceful between 6000~11000
Renewable biomass resource.The research that biomass resource is prepared as carbon fiber has more report, such as: lignin, and cotton
Fiber prepares carbon filament fiber applications and is rarely reported in the research of thermo electric material, and development and utilization has broad prospects.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, i.e., traditional electric heating system heat supply efficiency is low, peace
The defects of full hidden danger protrudes, to provide the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic.
The present invention is implemented as follows:
The preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic, includes the following steps:
Step 1: it is laid with the heat-insulated basal layer pottery mud/powder of one layer of micropore in idiosome mold bottom, it is total with a thickness of idiosome mold
The 0.4~0.6 of thickness forms the heat-insulated basal layer of micropore；
It makes pottery Step 2: the cotton fiber base carbon filament after surface coated treatment is laid immediately on the heat-insulated basal layer of micropore
On mud/powder, and with idiosome powder uniform fold, idiosome powder applies material with a thickness of the 0.2~0.3 of idiosome mold overall thickness, puts down
Embryo is pressed after whole, forms cotton fiber base carbon filament electrothermal layer；
Step 3: above-mentioned idiosome to be carried out to pressure embryo or sizing in idiosome mold, depanning after the completion of embryo or sizing is pressed to obtain half
Finished product；Kiln is put into after drying to be sintered to obtain finished product；
Step 4: the glaze slip of ceramic glaze is applied on finished product, sintering obtains electric ceramic plate after drying.
Further scheme is:
The micropore heat-insulated basal layer pottery mud/powder includes the following component of weight percent: major ingredient ingredient is 50~
70% SiO2, 15~20% Al2O3, 2~10% TiO2, the sodium tripolyphosphate that food ingredient is 0.1~2%, 5~
15% calcium carbonate, 4~6% dodecyl sodium sulfate；
The idiosome powder main component and content of the cotton fiber base carbon filament electrothermal layer are as follows: 40~50% SiO2, 25~
35% Al2O3, 15~25% carbon black, 1~2% Fe2O3, 2~5% TiO2, the MgO of 1~2% CaO and 2~3%
Further scheme is:
The cotton fiber base carbon filament the preparation method comprises the following steps:
Step 201: under normal pressure, cotton fiber being added and contains 1~6g/L sodium metasilicate, 2~10g/L sodium sulfite and 10~25g/
The mixed solution of L sodium hydroxide, bath raio be 1 ︰ 30~60, kiering temperature be 60 DEG C~90 DEG C, the kiering time be 90~
120min；After kiering, with 30 DEG C~50 DEG C of warm water repeated flushing to neutrality；
Step 202: under room temperature, the cotton fiber that step 201 is handled be immersed in mass concentration be 1~3g/L sulfuric acid and 1~
In the mixed solution of 3g/L hydrochloric acid, bath raio is 1 ︰ 30~50, and soaking time is 20~40min；After immersion, with 30 DEG C~
50 DEG C of warm water repeated flushing is to neutrality；
Step 203: the cotton fiber that step 202 is handled spins, and preparation specification is the yarn of 20~80 Tekes.
Step 204: cotton fiber yarn precursor prepared by step 203 being pre-oxidized in having oxygen atmosphere, obtains pre- oxygen
Change silk；Preferably, the precursor pre-oxidation can generally be completed in two stages, and the first oxidizing temperature is 200~250 DEG C, when oxidation
Between be 10~50min；Second oxidizing temperature is 250~300 DEG C, and oxidization time is 30~40min；
Step 205: preoxided thread is carbonized in an oxygen-free atmosphere, obtains cotton fiber base carbon filament finished product；Preferably, described
The carbonization of preoxided thread generally can be divided into two stages and complete, and the first carburizing temperature is 300~600 DEG C, and carbonization time is 1~
5min；Second carburizing temperature is 800~1400 DEG C, and carbonization time is 2~4min；
Step 206: the fiber of step 205 processing is by surface treatment, starching, drying and winds obtained cotton fiber base carbon filament
Finished product.
Further scheme is:
The cotton fiber base carbon filament will need to weave with M or S-shaped winding mode or a plurality of carbon filament line according to mold, and with ring
Shape winding mode is solidified, is formed.
Further scheme is:
The vestibule of mountable individual temperature sensors is reserved in cotton fiber base carbon filament electrothermal layer, the vestibule is elongated circle
Cylindricality, 2~3mm of internal diameter, 10~200mm of length；The reserved vestibule is apart from 2~4mm of surface insulation layer；And in carbon filament
Electrothermal layer two sides lateral layout metallic channel and carbon filament electrode tip sub-aperture, conducting wire 3~5mm of groove depth, 1~2mm of electrode terminal aperture.
Further scheme is:
It is that pressure is not less than 30MPa that powder idiosome, which presses embryo condition,.
The raw material of ceramic glaze, consisting of: 18~20% potassium feldspar, 3~5% burning talcum, 7~9% side's solution
Stone, 10~15% aluminium nitride, 3~5% ball clay, 24~26% burning kaolin, 24~26% frit, 0.8~
1.2% burning zinc oxide, 0.8~1.2% burning aluminium oxide, by load weighted ceramic glaze raw material be put into ball mill into
Then the glucose for accounting for glaze quality 2~4% is added in row ball milling, 1~3h of Ball-milling Time, 1~3h of ball milling, obtains glaze again
Slurry.
Further scheme is:
In step 4, the finished product for being applied with glaze slip is sintered at 800~1200 DEG C after drying obtains ceramic wafer, preferably
Ground, calcining system are room temperature~800 DEG C, when heating a length of 15min, 800 DEG C~1200 DEG C, when heating a length of 5min, 1200 DEG C
15min is kept the temperature, 20min is finally cooled down, electric ceramic plate is prepared.
Cotton fiber base carbon filament electric ceramic prepared by the present invention is using one pressure embryo and sintering and moulding technology, by cotton fiber yarn
Line is embedded in inside ceramics, to form carbon filament fiber by being carbonized under the conditions of starvation through high temperature sintering, realizes cotton fiber base carbon
Silk with it is ceramic it is seamless contact, cotton fiber base carbon filament is easy to use as electric ceramic prepared by thermo electric material, cotton fiber base carbon filament
Electric conversion efficiency is high.The carbon filament thermo electric material of cotton fiber preparation has cheap advantage, and raw material sources are extensive,
It is planted extensively in China, low in cost, successful application of the cotton fiber base carbon filament in electric ceramic plate, which will be realized, to turn waste into wealth
Miraculous effects, have important theoretical significance and market application value.
Detailed description of the invention
Fig. 1 is cotton fiber base carbon filament electric ceramic longitudinal profile structure schematic of the present invention；
Fig. 2 is two kinds of Typical Planars arrangement signal of cotton fiber base carbon filament inside cotton fiber base carbon filament electric ceramic of the present invention
Figure；
Fig. 3 is cotton fiber base carbon filament electric ceramic temperature sensor vestibule, metallic channel and electrode terminal schematic diagram of the present invention；
Fig. 4 is that the present invention carries out the temperature of obtained material surface using FLIR one infrared camera and regulated power supply
The schematic diagram of real-time measurement.
Specific embodiment
The present invention is further illustrated in the following with reference to the drawings and specific embodiments.
The present invention integrated sinter molding cotton fiber base carbon filament electric ceramic to be prepared, structure is as shown in Fig. 1, packet
Include the heat-insulated basal layer 3 of the micropore set gradually from top to bottom, cotton fiber base carbon filament electrothermal layer 2 and superficial layer 1.In cotton fiber base
Among carbon filament electrothermal layer 2, it is provided with cotton fiber base carbon filament 5 and reserves the vestibule 4 of mountable individual temperature sensors.
The preparation method of one sinter molding cotton fiber base carbon filament electric ceramic of the present invention, comprises the following steps:
Step 1: the preparation of the heat-insulated basal layer 3 of micropore: the heat-insulated basal layer pottery mud of micropore configured by foam process
(powder) is then laid in idiosome mold bottom, with a thickness of the 0.4~0.6 of idiosome mold overall thickness, wherein the heat-insulated base of micropore
Bottom pottery mud (powder) material main component and content are as follows: the SiO that major ingredient ingredient is 50~70%2, 15~20% Al2O3, 2~
10% TiO2, the sodium tripolyphosphate that food ingredient is 0.1~2%, 5~15% calcium carbonate, 4~6% dodecyl sulphur
Sour sodium.
Step 2: the preparation of cotton fiber base carbon filament electrothermal layer 2: the cotton fiber base carbon filament after surface coated treatment is straight
It connects and is laid on micropore heat-insulated basal layer pottery mud (powder) 3, and use idiosome powder uniform fold, apply and expect with a thickness of idiosome mold
Embryo is pressed after smooth in the 0.2~0.3 of overall thickness；Wherein, the pottery of cotton fiber base carbon filament electrothermal layer 2 mud (powder) material main component and content
Are as follows: 40~50% SiO2, 25~35% Al2O3, 15~25% carbon black, 1~2% Fe2O3, 2~5% TiO2, 1
The MgO of~2% CaO and 2~3%；
Step 3: paving mode and structure design: the paving mode of cotton fiber base carbon filament is as shown in Fig. 2, cotton fiber
Base carbon filament is coiled in heat-insulated 3 plane of basal layer of micropore with square ring winding mode；Temperature in cotton fiber base carbon filament electrothermal layer
Sensor reserves cavity and metallic channel specification and design as shown in Fig. 3, and Pinhole-shaped temperature sensor is placed in cavity inside, cotton
The both ends of fiber base carbon filament heating wire are pre-buried to electrode terminal hole site, and are connected to control along metallic channel by external copper wire conducting wire
Device processed；
Furthermore it is possible to which the longitudinal direction of cotton fiber base carbon filament is laid in zigzag or corrugated, cotton fiber base carbon is increased with this
The contact area of silk, improves heat transfer efficiency, and cotton fiber base carbon filament fever line end and copper wire (copper sheet) are finally separated with positive and negative polarities
It closes on metallic channel electrode terminal 6 at end；As shown in Fig. 3, mountable independent temperature is reserved in cotton fiber base carbon filament electrothermal layer
The vestibule 4 of sensor, the vestibule are elongated cylindrical, 2~3mm of internal diameter, 10~200mm of length；The reserved vestibule
Apart from 2~4mm of surface insulation layer；And in the two sides lateral layout metallic channel 7 and carbon filament electrode tip of cotton fiber base carbon filament electrothermal layer
Sub-aperture 8, conducting wire 3~5mm of groove depth, 1~2mm of electrode terminal aperture.Pinhole-shaped temperature sensor is placed in inside vestibule, carbon filament beam
The both ends of heating wire are pre-buried to electrode terminal hole site, and are connected to control device along metallic channel by external copper wire conducting wire.
Step 4: pressure embryo and sinter molding: after the completion of layer-by-layer distribution, carrying out pressure embryo or sizing in a mold, wherein powder
It is 30~60MPa that idiosome, which presses the pressure of embryo, and depanning after the completion of embryo or sizing is pressed to obtain semi-finished product.Kiln is put into after drying to be sintered
To finished product, sintering condition are as follows: oxygen free condition, sintering and cooling procedure in remain nitrogen atmosphere, sintering temperature 1000
~1400 DEG C, sintering time is 1~3h；
Step 5: the preparation of superficial layer 1: the raw material of appropriate ceramic glaze is weighed, consisting of: 18~20% potassium is long
Stone, 3~5% burning talcum, 7~9% calcite, 10~15% aluminium nitride, 3~5% ball clay, 24~26% burning
Kaolin, 24~26% frit, 0.8~1.2% burning zinc oxide, 0.8~1.2% burning aluminium oxide, by load weighted pottery
Glaze raw material, which is put into ball mill, carries out ball milling, 1~3h of Ball-milling Time, and the Portugal for accounting for glaze quality 2~4% is then added
Grape sugar, again 1~3h of ball milling, obtained glaze slip are applied on the ceramic body of step 4 preparation, after drying 1000~
Sintering obtains ceramic wafer at 1400 DEG C, it is preferable that calcining system is room temperature~800 DEG C, when heating a length of 15min, 800 DEG C~
1200 DEG C, when heating a length of 5min, 1200 DEG C of heat preservation 15min, finally cool down 20min, electric ceramic plate be prepared；
The preparation method of above-mentioned one pressure embryo and sinter molding cotton fiber base carbon filament electric ceramic, which is characterized in that step
Cotton fiber base carbon filament described in rapid two the preparation method comprises the following steps:
Step 201: under normal pressure, cotton fiber being added and contains 1~6g/L sodium metasilicate, 2~10g/L sodium sulfite and 10~25g/
The mixed solution of L sodium hydroxide, bath raio be 1 ︰ 30~60, kiering temperature be 60 DEG C~90 DEG C, the kiering time be 90~
120min；After kiering, with 30 DEG C~50 DEG C of warm water repeated flushing to neutrality；
Step 202: under room temperature, the cotton fiber that step 201 is handled be immersed in mass concentration be 1~3g/L sulfuric acid and 1~
In the mixed solution of 3g/L hydrochloric acid, bath raio is 1 ︰ 30~50, and soaking time is 20~40min；After immersion, with 30 DEG C~
50 DEG C of warm water repeated flushing is to neutrality；
Step 203: the cotton fiber that step 202 is handled spins, and preparation specification is the yarn of 20~80 Tekes.
Step 204: cotton fiber yarn precursor prepared by step 203 being pre-oxidized in having oxygen atmosphere, obtains pre- oxygen
Change silk；Preferably, the precursor pre-oxidation can generally be completed in two stages, and the first oxidizing temperature is 200~250 DEG C, when oxidation
Between be 10~50min；Second oxidizing temperature is 250~300 DEG C, and oxidization time is 30~40min；
Step 205: preoxided thread is carbonized in an oxygen-free atmosphere, obtains cotton fiber base carbon filament finished product；Preferably, described
The carbonization of preoxided thread generally can be divided into two stages and complete, and the first carburizing temperature is 300~600 DEG C, and carbonization time is 1~
5min；Second carburizing temperature is 800~1400 DEG C, and carbonization time is 2~4min；
Step 206: the fiber of step 205 processing is by surface treatment, starching, drying and winds obtained cotton fiber base carbon filament
Finished product.
As shown in Fig. 2, the cotton fiber base carbon filament will be needed according to mold with M or S-shaped winding mode or a plurality of carbon filament
Line braiding, and be coiled on the heat-insulated substrate layer plane of micropore with ring winding mode, solidified, be formed.
Furthermore it is possible to which the longitudinal direction of cotton fiber base carbon filament is laid in zigzag or corrugated, connecing for carbon filament beam is increased with this
Contacting surface product, improves heat transfer efficiency, cotton fiber base carbon filament Shu Fare line end and copper wire (copper sheet) separately hold conjunction finally with positive and negative polarities
On metallic channel electrode terminal 6；
As shown in Fig. 3, the vestibule 4 of mountable individual temperature sensors, institute are reserved in cotton fiber base carbon filament electrothermal layer
Stating vestibule is elongated cylindrical, 2~3mm of internal diameter, 10~200mm of length；The reserved vestibule is apart from surface insulation layer 2
~4mm；And in the two sides lateral layout metallic channel 7 and carbon filament electrode tip sub-aperture 8 of cotton fiber base carbon filament electrothermal layer, conducting wire groove depth 3
~5mm, 1~2mm of electrode terminal aperture.Pinhole-shaped temperature sensor is placed in inside vestibule, and the both ends of carbon filament beam heating wire are pre-buried
To electrode terminal hole site, and intelligent data control device is connected to along metallic channel by external copper wire conducting wire.
Certainly, it will be understood by those skilled in the art that one the pressure embryo, integrally sintered cotton fiber base carbon filament of the application
Electric ceramic, external form are not limited to flat-faced tube or floor brick type, the wave with identical electric heating function that can also be integrally formed
The non-planar ceramic structure that line shape, bowl-shape etc. are changed through simple appearance.
In the present invention, rated operational voltage can be set not higher than 36V, to guarantee using safe.
The cotton fiber base carbon filament beam (diameter formed after using specification to be carbonized for the cotton fiber yarn of 20~80 Tekes below
It is buried into carbon filament heating layer, and after the sizing pretreatment of surface according to this patent step described previously for 0.5 or 1.0mm)
Will be smooth after proportioned each layer pottery powder raw material covering, one presses embryo, dry, most primary integral sintered forms through 1160 DEG C afterwards.
Heating property parameter detecting: according to the idiosome mold being pre-designed, being made the ceramic wafer small sample of 3 kinds of specifications,
With a thickness of 5-8mm, area 50mm*40mm.It being detected, the resistance for sintering carbon filament heating-wire after ceramic wafer into is 5.0~
Between 40.0 Ω, meets experiment and be expected.
As shown in Fig. 4, using FLIR one infrared camera and regulated power supply to obtained material electric heating conversion performance
It is characterized.The ceramic wafer carbon filament beam both ends for firing formation are connected to the stabilized power source (0.5~1.5A of electric current) of 9~24v,
And real-time measurement is carried out using temperature of the infrared thermal imaging camera to material surface.According to the experimental results, the surface of ceramic wafer
Temperature increases with the increase of conduction time, and heat is spread from the center of carbon filament beam to two sides, and sample is being powered 45~60 seconds
Surface temperature can achieve 45 DEG C later, and after lasting be powered 100~120 seconds, the surface temperature of sample has reached 80 DEG C, and 3
The surface temperature of sample has reached 105 DEG C after~4 minutes.
The results showed that prepared cotton fiber base carbon filament electric heating function ceramic plate not only heats up rapidly, but also high-efficient,
With excellent electric conversion.
Overall structure of the present invention is simple, and rationally, use is safe for design, and intelligence is convenient, and heating effect is good；Integrated pressing mold,
Integral sintered, modularized design is mated formation simple；Using cotton fiber base carbon filament heating technique, the service life is long, is not necessarily to after-sale service, section
It can environmental protection；Safe floor heating, good insulating, intelligent temperature control can preferably meet heating use demand.
Although reference be made herein to invention has been described for explanatory embodiment of the invention, and above-described embodiment is only this hair
Bright preferable embodiment, embodiment of the present invention are not limited by the above embodiments, it should be appreciated that art technology
Personnel can be designed that a lot of other modification and implementations, these modifications and implementations will fall in disclosed in the present application
Within scope and spirit.
Claims (10)
1. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic, it is characterised in that include the following steps:
Step 1: the heat-insulated basal layer pottery mud/powder of one layer of micropore is laid in idiosome mold bottom, with a thickness of idiosome mold overall thickness
0.4~0.6, formed the heat-insulated basal layer of micropore；
Step 2: the cotton fiber base carbon filament after surface coated treatment is laid immediately on the heat-insulated basal layer pottery mud/powder of micropore
On, and with idiosome powder uniform fold, idiosome powder applies material with a thickness of the 0.2~0.3 of idiosome mold overall thickness, it is smooth after pressure
Embryo forms cotton fiber base carbon filament electrothermal layer；
Step 3: above-mentioned idiosome to be carried out to pressure embryo or sizing in idiosome mold, depanning after the completion of embryo or sizing is pressed to obtain semi-finished product；
Kiln is put into after drying to be sintered to obtain finished product；
Step 4: the glaze slip of ceramic glaze is applied on finished product, sintering obtains electric ceramic plate after drying.
2. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
The heat-insulated basal layer pottery mud/powder of the micropore includes the following component of weight percent: major ingredient ingredient is 50~70%
SiO2, 15~20% Al2O3, 2~10% TiO2, the sodium tripolyphosphate that food ingredient is 0.1~2%, 5~15% calcium carbonate,
4~6% dodecyl sodium sulfate.
3. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
The idiosome powder main component and content of the cotton fiber base carbon filament electrothermal layer are as follows: 40~50% SiO2, 25~35%
Al2O3, 15~25% carbon black, 1~2% Fe2O3, 2~5% TiO2, the MgO of 1~2% CaO and 2~3%.
4. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
The cotton fiber base carbon filament the preparation method comprises the following steps:
Step 201: under normal pressure, cotton fiber being added and contains 1~6g/L sodium metasilicate, 2~10g/L sodium sulfite and 10~25g/L hydrogen
The mixed solution of sodium oxide molybdena, bath raio are 1 ︰ 30~60, and kiering temperature is 60 DEG C~90 DEG C, and the kiering time is 90~120min；It boils
After white silk, with 30 DEG C~50 DEG C of warm water repeated flushing to neutrality；
Step 202: under room temperature, it is 1~3g/L sulfuric acid and 1~3g/L that the cotton fiber that step 201 is handled, which is immersed in mass concentration,
In the mixed solution of hydrochloric acid, bath raio is 1 ︰ 30~50, and soaking time is 20~40min；After immersion, with 30 DEG C~50 DEG C
Warm water repeated flushing is to neutrality；
Step 203: the cotton fiber that step 202 is handled spins, and preparation specification is the yarn of 20~80 Tekes；
Step 204: cotton fiber yarn precursor prepared by step 203 being pre-oxidized in having oxygen atmosphere, obtains preoxided thread；
The precursor pre-oxidation is completed in two stages, and the first oxidizing temperature is 200~250 DEG C, and oxidization time is 10~50min；Second
Oxidizing temperature is 250~300 DEG C, and oxidization time is 30~40min；
Step 205: preoxided thread is carbonized in an oxygen-free atmosphere, obtains cotton fiber base carbon filament finished product；The carbonization of preoxided thread
It is divided into two stages completions, the first carburizing temperature is 300~600 DEG C, and carbonization time is 1~5min；Second carburizing temperature is 800
~1400 DEG C, carbonization time is 2~4min；
Step 206: the fiber of step 205 processing by surface treatment, starching, drying and the obtained cotton fiber base carbon filament of winding at
Product.
5. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
The cotton fiber base carbon filament needs to weave with M or S-shaped winding mode or a plurality of carbon filament line according to mold, and with ring winding
Mode is solidified, is formed.
6. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
The vestibule of mountable individual temperature sensors is reserved in cotton fiber base carbon filament electrothermal layer, the vestibule is elongate cylinder
Shape, 2~3mm of internal diameter, 10~200mm of length；The reserved vestibule is apart from 2~4mm of surface insulation layer；And in carbon filament electric heating
Layer two sides lateral layout metallic channel and carbon filament electrode tip sub-aperture, conducting wire 3~5mm of groove depth, 1~2mm of electrode terminal aperture.
7. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
It is 30~60MPa that powder idiosome pressure embryo condition, which is pressure,.
8. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
In step 3, sintering condition are as follows: oxygen free condition, sintering and cooling procedure in remain nitrogen atmosphere, sintering temperature is
1000~1400 DEG C, sintering time is 1~3h.
9. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic according to claim 1, it is characterised in that:
The raw material of ceramic glaze forms are as follows: 18~20% potassium feldspar, 3~5% burning talcum, and 7~9% calcite, 10~15%
Aluminium nitride, 3~5% ball clay, 24~26% burning kaolin, 24~26% frit, 0.8~1.2% burning zinc oxide, 0.8
Load weighted ceramic glaze raw material is put into ball mill and carries out ball milling by~1.2% burning aluminium oxide, 1~3h of Ball-milling Time,
Then the glucose for accounting for glaze quality 2~4% is added, 1~3h of ball milling, obtains glaze slip again.
10. the preparation method of integrated sinter molding cotton fiber base carbon filament electric ceramic, feature exist according to claim 1
In:
In step 4, the finished product for being applied with glaze slip is sintered at 800~1200 DEG C after drying obtains ceramic wafer, and calcining system is
Room temperature~800 DEG C, when heating a length of 15min, 800 DEG C~1200 DEG C, when heating a length of 5min, 1200 DEG C of heat preservation 15min, finally
Cooling 20min, is prepared electric ceramic plate.
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| CN110436903A (en) * | 2019-07-18 | 2019-11-12 | 武汉纺织大学 | Manufacturing method, product and the application method of vacuumizing method electric heating function ceramics |
| CN110467434A (en) * | 2019-07-18 | 2019-11-19 | 武汉纺织大学 | The preparation method of skeleton coated electric heating function ceramics, product and application method |
| CN113912377A (en) * | 2021-11-24 | 2022-01-11 | 杭州科技职业技术学院 | Ceramic artwork manufacturing process based on cotton fiber medium |
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