CN103467000B - Compound thermal insulation material manufactured by using waste fibers and manufacturing method thereof - Google Patents
Compound thermal insulation material manufactured by using waste fibers and manufacturing method thereof Download PDFInfo
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- CN103467000B CN103467000B CN201310409118.5A CN201310409118A CN103467000B CN 103467000 B CN103467000 B CN 103467000B CN 201310409118 A CN201310409118 A CN 201310409118A CN 103467000 B CN103467000 B CN 103467000B
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Abstract
The invention provides a compound thermal insulation material manufactured by using waste fibers and a manufacturing method of the compound thermal insulation material and is applied to the field of insulation materials on a high-temperature furnace body. The compound thermal insulation material comprises basic materials and auxiliary materials, wherein the basic materials are waste fiber raw materials and are fiber raw materials which can be carbonized after being subjected to high-temperature calcination, the auxiliary materials comprise graphite, an adhesive and resin, and the waste fiber raw materials comprise one or multiple of polypropylene fibers, asphalt fibers, viscose, pre-oxidized fibers, phenolic fibers, carbon fibers, graphite fibers, wood fibers and cotton fibers. The compound thermal insulation material manufactured by adopting the materials according to the method have relatively thin fiber diameters, relatively small heat conductivity coefficient, relatively good ablation resistance and relatively good purity; and as the compound thermal insulation material is manufactured by using the waste fibers, the cost is reduced, and the benefits and the product competitive power of enterprises are increased.
Description
Technical field
The present invention relates to a kind of compound insulating material application and in particular to a kind of employing waste fiber make compound guarantor
Adiabator and the machining manufacture of this compound insulating material.
Background technology
Insulation material is widely used in glass, heat treatment, Aero-Space, iron and steel, electric power, solar energy, quasiconductor etc.
Industry device needs the field of insulation, is used primarily in the housing of stove.But the expansion with products application scope and popularization, right
The performance of furnace equipment and structural requirement are more and more harsher, become increasingly complex, including requiring to possess higher treatment temperature, higher
Process purity, bigger volume, lighter weight, higher power and other technological merit.For example in electronics, electrical equipment
Or in the manufacture process of high-power optics, need bigger size, higher purity, then to producing these crystal
Body of heater higher requirement is just proposed, so harsher, more reliable requirement is just proposed to the insulation material of body of heater.If stove
The temperature of sub- thermal field, purity, volume can not meet requirement, then ineffective raw material good more also be can not produce and met the product requiring
Product, and among these most critical be exactly thermal field insulation material selection.
The insulation material of prior art mainly adopts domestic cyanogen synthetic fibre as primary raw material, the thermal insulating material being manufactured with this raw material
Material has obvious problem and a limitation:
1st, density is big, and in the case of same size, thermal capacitance is big, and itself is big to the consumption of heat, power consumption.And whole thermal field
Relatively heavy, mount and dismount high labor intensive.
2nd, heat insulation effect is poor, and the fibre diameter due to adopting is 15 microns, in the case of just as bulk density, heat
Passage is short, and such heat insulation effect is naturally just poor, thus bringing the barrier that cannot go beyond (as furnace to equipment Thermal Design
Design is not high, and volume design is less).
3rd, ablation resistance is poor, because itself fiber fineness is not high, during high temperature thermal shocking, poor resistance.
Based on the shortcoming of more than insulation material of prior art several performances and production technology, therefore a kind of cost performance is high,
Inexpensive insulation material is just that insulation of equipment field is required.
Content of the invention
For drawbacks described above, it is an object of the invention to provide a kind of compound insulating material, with solve prior art power consumption,
Heat insulation effect is poor, the technical problem of ablation resistance difference.
It is yet another object of the invention to provide a kind of manufacture method of compound insulating material, consumed energy with solving prior art,
Heat insulation effect is poor, the technical problem of ablation resistance difference.
For achieving the above object, present invention employs following technical scheme:
The compound insulating material that a kind of utilization waste fiber makes, is applied to the adiabator field on high-temperature furnace body, bag
Include basic material and adjuvant, described basic material is waste fiber raw material, described basic material is permissible after high-temperature calcination
The fibrous material of carbonization；Described adjuvant includes graphite, binding agent and resin.
The compound insulating material making according to a kind of utilization waste fiber described in present pre-ferred embodiments, described discarded
Fibrous raw material is polypropylene cyanogen fiber, pitch fibers, viscose rayon, oxidization fiber, phenolic fibre, carbon fiber, graphite fibre, wooden
The one of which of fiber and cotton fiber or many of composition.
The compound insulating material making according to a kind of utilization waste fiber described in present pre-ferred embodiments, described bonding
Agent is epoxy resin, phenolic resin, polyester resin, Lauxite, organic siliconresin, acryl resin, rubber type of material and four
The one of which of the adhesive such as fluoroethylene resin or many of composition；Described graphite be graphite, nano-graphite, crystalline flake graphite,
The one or more of which such as Graphene, pyrolytic carbon, pyrolytic graphite, CNT form.
The compound insulating material making according to a kind of utilization waste fiber described in present pre-ferred embodiments, described discarded
Fibrous raw material is asphaltic base, the one of which of pan base, viscose glue base and phenolic aldehyde base；Being shaped as of described waste fiber raw material is long fine
The one of which of dimension, chopped fiber, milled fibre, cloth, felt and paper or many of composition.
The compound insulating material making according to a kind of utilization waste fiber described in present pre-ferred embodiments, described compound
The density of insulation material becomes ladder density.
The compound insulating material making according to a kind of utilization waste fiber described in present pre-ferred embodiments, described compound
The heat transfer direction of insulation material and heat conductivity are controllabilitys.
A kind of utilization waste fiber makes the manufacture method of compound insulating material, comprising:
Step 1: waste fiber raw material is carried out being surface-treated, break process and decentralized processing；
Step 2: the fibrous raw material after processing is mixed with adjuvant and is dispersed in water；
Step 3: by mixed material uniform stirring；
Step 4: the material after stirring is filtered by mould, is shaped to idiosome；
Step 5: the idiosome infiltration resin of aftershaping will be filtered
Step 6: the idiosome solidification after infiltration resin, be dried
Step 7: the idiosome being dried is put into calcining carbonization in vacuum drying oven；
Step 8: the idiosome of carbonization is put into calcining graphitization in vacuum drying oven.
According to the manufacture method described in present pre-ferred embodiments, the blank shape of step 4 packing compact forming can be rectangular
The one of which of the geometries such as body, cylinder.
According to the manufacture method described in present pre-ferred embodiments, described calcining is under vacuum drying oven or inert atmosphere protection
The high-temperature calcination carrying out.
Make the present invention compared to existing technology due to employing above technology, have the following advantages that and good effect:
Firstth, the compound insulating material made according to material and the method for the present invention, due to being made using waste fiber,
Reduce cost, improve the benefit of enterprise and the competitiveness of product；
The compound insulating material of the secondth, present invention has a thinner fibre diameter, less heat conductivity, preferably resistance to burning
Corrosion, higher purity；And the material adopting has the anisotropic feature of heat transfer, so the compound insulating material designed
There is orientation heat transmission function, and thermal conductivity coefficient can design as needed；
3rd, make stove obtain higher temperature in the case of equal-wattage using this compound insulating material, also may be used
So that stove uses less power to obtain higher temperature, so play energy-saving effect；
4th, the atmosphere in stove is made to obtain higher purity using this compound insulating material, thus ensureing that crystal is given birth to
Long purity, improve product quality；
5th, the compound insulating material of the present invention is inert in room temperature aerobic environment, in modal environment not
Can oxidized or corrosion.And light weight, density with stepped design, can be conducive to cleaning and the ablation needs of thermal field environment.
Brief description
Fig. 1 is Graphene single layer structure schematic diagram；
Fig. 2 is a kind of flow chart manufacturing compound insulating material using discarded carbon fiber of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, several preferred embodiments of the present invention are described in detail, but the present invention is not restricted to
These embodiments.The present invention covers any replacement made in the spirit and scope of the present invention, modification, equivalent method and side
Case.In order that the public has to the present invention thoroughly understanding, it is described in detail specifically thin in present invention below preferred embodiment
Section, and description without these details can also understand the present invention completely for a person skilled in the art.
The core concept of the present invention is, has not only cherished environment but also reduces cost using waste fiber as raw material, this exterior-heat
Conductance and heat conduction direction can adjust and design, and density can ladder be distributed or local is different, such work as needed
Method, can adjust the ablation resistance of insulation material as needed.Especially it is filled with graphite, nano-graphite, crystalline flake graphite, graphite
The joint product of the one or more of which raw material such as alkene, pyrolytic carbon, pyrolytic graphite, CNT；The thermostability of this filler
Very high, highest can reach 3000 DEG C.In addition, this filler has very high purity, and production cost can be reduced.
The present invention adopts the compound insulating material that a kind of utilization waste fiber makes, and is applied to the heat insulating material on high-temperature furnace body
Material field, compound insulating material includes basic material and adjuvant, and described basic material is waste fiber raw material, is to forge through high temperature
Can be with the fibrous material of carbonization after burning；Described waste fiber raw material can be polypropylene cyanogen fiber, pitch fibers, viscose rayon,
The one of which of oxidization fiber, phenolic fibre, carbon fiber, graphite fibre, wood fibre and cotton fiber or many of composition.
Described adjuvant includes graphite, binding agent and resin；And described adhesive can be epoxy resin, phenolic resin, gather
The adhesive such as ester resin, Lauxite, organic siliconresin, acryl resin, rubber type of material and TFE are wherein
A kind of or many of composition；And described graphite be graphite, nano-graphite, crystalline flake graphite, Graphene, pyrolytic carbon, pyrolytic graphite,
The one or more of which such as CNT form.
In addition, above-mentioned waste fiber raw material can be wherein the one of asphaltic base, pan base, viscose glue base and phenolic aldehyde base
Kind；And the shape of graphite fibre can be the one of which of long fibre, chopped fiber, milled fibre, cloth, felt and paper or many of
Composition.And the density of the compound insulating material worked it out can be designed to ladder density as requested, needing ablation resistance good
Local density design height a bit.
Carbon fiber, graphite fibre are a kind of special materials, apply the carbon fiber in insulation material or graphite fibre, warp
Cross chopped fiber, fiber powder or both mixing that cutter or gas breaking crusher machine are processed, this material is in fibre diameter side
To with the heat conductivity in fibre length direction, there is very big diversity, be liquid crystal structure under high accuracy microscope, having property
Can anisotropy, and its fibre diameter is 7 microns, 15 microns of more domestic cyanogen synthetic fibre fibre diameter come little.Merit attention
, because particularity in performance for this material it is possible to adjust the biography of compound insulating material according to machine direction
Hot direction.The carbon fiber in compound insulating material or graphite fibre is applied to be generally chopped fiber or milled fibre.Pass in heat conduction
The distribution of thermosphere middle short fiber is the arragement direction determining fiber according to specific moulding process, and a part takes according to design requirement
To a part is disorderly and unsystematic distribution, generally plants space network, and main heat transfer type is by fiber overlap joint and to be situated between
The common realization of matter transmission.The heat transfer of compound insulating material can be adjusted by the ratio of direction of adjustment fiber and mixed and disorderly fiber
Performance and heat transfer direction.
Graphene is also a kind of special material, and refer to Fig. 1 is Graphene single layer structure schematic diagram, and Graphene is from stone
The graphite flake that separates in ink is the thin slice being only made up of one layer of carbon atom hence it is evident that than traditional crystalline flake graphite or other graphite
Material is thin, and performance is also significantly different, is diverse two kinds of materials.This material is in vertical scale direction and parallel scale
The heat conductivity in direction has very big diversity, and the heat conductivity maximum in parallel scale direction can reach 3000w/m k
(heat conductivity of common graphite is generally less than 1500w/m k), and the heat conductivity in vertical scale direction is less, in high accuracy
It is hexagonal stratiform scale structure under microscope, there is the anisotropy of performance.Significantly, since this material exists
Particularity in performance, and can basis it is possible to adjust the thermal conductivity coefficient of composite according to the content of Graphene
The orientation of Graphene is adjusting the direction of heat transfer.
Compared with the insulation material of prior art, the maximum difference of the compound insulating material in the present invention is that its low grade fever is led
Coefficient, and the controllability in its heat conductivity and heat conduction direction and designability.
Hereinafter, then flow chart, the technique side that for raw material, compound insulating material is manufactured with discarded carbon fiber to citing are combined
Method is explained.
Embodiment one
Refer to Fig. 2, the present embodiment is a kind of flow process to manufacture compound insulating material using discarded carbon fiber for raw material
Figure is it is seen then that mainly comprise the following steps:
A kind of manufacture method making compound insulating material using discarded carbon fiber, comprising:
S201: discarded carbon fiber material is carried out being surface-treated, break process and decentralized processing；
Carbon fiber is to be made in the way of spray webbing, and short carbon fiber is then spray webbing gained carbon fiber through special cutter
(such as gantry chopper) or gas breaking machine, cut according to length set in advance or crush.Certainly, it is with adjuvant more
Good combination, then before preparing chopped carbon fiber, need to carry out surface treatment to carbon fiber according to different adjuvants, improve compound
The performance of material.
It is ground in addition it is also necessary to the chopped carbon fiber processing is put into grinder in the case of necessary；Grind carbon fine
Dimension is to be processed further gained by the carbon fiber obtaining that is chopped, and usually the short carbon fiber being chopped is put in grinder
Grind the regular hour, then obtain the carbon fiber of the fiber powder of certain mesh number according to milling time and wind-tunnel classification.
S202: the carbon fiber material after processing is mixed with adjuvant and is dispersed in water；
Short carbon fiber ground above, the carbon fiber of fiber powder or both mixing are put in water it is also possible to
Adhesive resin is put into mixing, such as part by weight or volume ratio in water according to setting ratio, obtains required material,
In material after generally mixing with, the content of carbon fiber is more than 2/10000ths, and the content of such as carbon fiber is more than 2/10000ths, for example
It is 5/10000ths, or 2/1000ths.
S203: by mixed material uniform stirring；
S204: the material after stirring is filtered by mould, is shaped to idiosome；
The method filtering is to mix drainage screen with the mould made, and mainly water filtration is gone out, stays fiber.Die-filling
The blank shape of molding can be the one of which of the geometries such as cuboid, cylinder；And, the heat transfer direction of base substrate and leading
Hot coefficient can design regulation.
S205: the idiosome infiltration resin of aftershaping will be filtered；
S206: the idiosome solidification after infiltration resin, be dried；
S207: the idiosome being dried is put into calcining carbonization in vacuum drying oven；
S208: the idiosome of carbonization is put into calcining graphitization in vacuum drying oven.
Calcining is the high-temperature calcination carrying out under vacuum drying oven or inert atmosphere protection, and calcining is divided into two stages, first, plus
Heat to 1000-1500 spend when, all non-carbon will be progressively ejected, and carbon content is stepped up, with the exclusion of non-carbon,
There is series of chemical between solid phase, be a kind of carbonisation；Second step, temperature is increased to 2000-3000 when spending, residual
Non-carbon continues exclusion, and the aromatic ring plane reacting formation further is stepped up, and arrangement is also more regular, and orientation significantly carries
Height, is a kind of graphitizing process.
In sum, a kind of compound insulating material of the present invention is processed, and effectively improves and has surmounted Conventional insulation
Performance, provides a kind of method making compound insulating material simultaneously, and this compound insulating material can set according to actual thermal technology
Meter requires to adjust its thermal conductivity coefficient and heat transfer direction, can specifically need to design its Density Distribution simultaneously, can effectively improve guarantor
The insulation effect of adiabator, thus reducing the weight and volume of thermal field, big for exploitation volume, energy consumption is little, and the high stove of performance carries
Supply favourable working condition, simultaneously the easy production and processing of this compound insulating material, low cost.
Make the present invention compared to existing technology due to employing above technology, have the following advantages that and good effect:
Firstth, the compound insulating material made according to material and the method for the present invention, due to being made using waste fiber,
Reduce cost, improve the benefit of enterprise and the competitiveness of product；
The compound insulating material of the secondth, present invention has a thinner fibre diameter, less heat conductivity, preferably resistance to burning
Corrosion, higher purity；And the material adopting has the anisotropic feature of heat transfer, so the compound insulating material designed
There is orientation heat transmission function, and thermal conductivity coefficient can design as needed；
3rd, make stove obtain higher temperature in the case of equal-wattage using this compound insulating material, also may be used
So that stove uses less power to obtain higher temperature, so play energy-saving effect；
4th, the atmosphere in stove is made to obtain higher purity using this compound insulating material, thus ensureing that crystal is given birth to
Long purity, improve product quality；
5th, the compound insulating material of the present invention is inert in room temperature aerobic environment, in modal environment not
Can oxidized or corrosion.And light weight, density with stepped design, can be conducive to cleaning and the ablation needs of thermal field environment.
According to embodiments of the invention as described above, these embodiments do not have all of details of detailed descriptionthe, not yet
Limit the specific embodiment that this invention is only described.Obviously, as described above, can make many modifications and variations.This explanation
Book is chosen and is specifically described these embodiments, is to preferably explain the principle of the present invention and practical application, so that affiliated
Technical field technical staff can utilize the present invention and modification on the basis of the present invention to use well.The present invention is only subject to right
Claim and its restriction of four corner and equivalent.
Claims (5)
1. the compound insulating material that a kind of utilization waste fiber makes, is applied to produce the adiabator on the high-temperature furnace body of crystal
It is characterised in that including basic material and adjuvant, described basic material is can be discarded with carbonization after high-temperature calcination in field
Fibrous raw material；
Described adjuvant includes graphite, binding agent and resin；
Described waste fiber raw material is polypropylene cyanogen fiber, pitch fibers, viscose rayon, oxidization fiber, phenolic fibre, wood fibre
One or more of with cotton fiber；
The density of described compound insulating material becomes ladder density；
The heat transfer direction of described compound insulating material and heat conductivity are controllabilitys；
The manufacture method of described compound insulating material, comprising:
Step 1: waste fiber raw material is carried out being surface-treated, break process and decentralized processing；
Step 2: the waste fiber raw material after processing and adjuvant are dispersed in water；
Step 3: by mixed material uniform stirring；
Step 4: the material after stirring is filtered by mould, is shaped to idiosome；
Step 5: the idiosome infiltration resin of aftershaping will be filtered；
Step 6: the idiosome solidification after infiltration resin, be dried；
Step 7: the idiosome being dried is put into calcining carbonization in vacuum drying oven；
Step 8: the idiosome of carbonization is put into calcining graphitization in vacuum drying oven.
2. a kind of utilization waste fiber makes as claimed in claim 1 compound insulating material is it is characterised in that described bonding
Agent is in epoxy resin, phenolic resin, polyester resin, Lauxite, organic siliconresin, acryl resin and rubber type of material
One or more；Described graphite is one or more of crystalline flake graphite, Graphene and pyrolytic graphite.
3. the compound insulating material that a kind of utilization waste fiber makes as claimed in claim 1 is it is characterised in that described discard
Fibrous raw material be shaped as one or more of long fibre, chopped fiber, milled fibre, cloth, felt and paper.
4. the compound insulating material that a kind of utilization waste fiber makes as claimed in claim 1 is it is characterised in that step 4 fills
The idiosome of mold forming is shaped as cuboid or cylinder.
5. a kind of utilization waste fiber makes as claimed in claim 1 compound insulating material is it is characterised in that described calcining
It is the high-temperature calcination carrying out under inert atmosphere protection.
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| CN104072183B (en) * | 2014-07-09 | 2015-08-19 | 中南林业科技大学 | A kind of method of fibre reinforced stratiform woodceramics |
| CN105712661A (en) * | 2015-07-03 | 2016-06-29 | 怀宁县宝友工贸有限公司 | Preparation method of inorganic thermal-insulation materials |
| CN106593933A (en) * | 2016-12-26 | 2017-04-26 | 重庆旭穆科技有限公司 | Heat dissipation fan material |
| CN110421904A (en) * | 2019-07-31 | 2019-11-08 | 东莞市汇驰纸业有限公司 | A kind of processing method regenerating corrugated board |
| CN111763096A (en) * | 2020-07-29 | 2020-10-13 | 上海骐杰碳素材料有限公司 | Carbon-based material for heat preservation device |
| CN113831147A (en) * | 2021-10-09 | 2021-12-24 | 上海世碳复合材料科技有限公司 | Carbon-carbon composite material artificial skeleton |
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