CN109265982A - A kind of preparation method, product and the application of macromolecule-three-dimensional carbon skeleton composite material - Google Patents
A kind of preparation method, product and the application of macromolecule-three-dimensional carbon skeleton composite material Download PDFInfo
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- CN109265982A CN109265982A CN201810896071.2A CN201810896071A CN109265982A CN 109265982 A CN109265982 A CN 109265982A CN 201810896071 A CN201810896071 A CN 201810896071A CN 109265982 A CN109265982 A CN 109265982A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/22—Expanded, porous or hollow particles
- C08K7/24—Expanded, porous or hollow particles inorganic
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0081—Electromagnetic shielding materials, e.g. EMI, RFI shielding
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/001—Conductive additives
Abstract
The invention discloses a kind of macromolecule-three-dimensional carbon skeleton composite material preparation methods comprising following steps: the carbonization framework material of (A) preparation three-dimensional structure；(B) macromolecule matrix is prepared；(C) macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity, make the wooden unit supporter be carbonized then to contact with high molecular material again, or contact the wooden unit supporter with high molecular material, then it is carbonized again, porous structure macromolecule-three-dimensional carbon skeleton composite material that porosity is 1~15% is made.The invention also discloses the material and its applications.Present invention focuses on can construct access by the natural structure of timber after carbonization, controlled macromolecule-three-dimensional carbon skeleton composite material material has thermally conductive, conductive and electro-magnetic screen function with the compound rear porosity of high molecular material, and with excellent mechanical property.
Description
Technical field
The invention belongs to technical field of high-molecule composite preparation, and it is multiple specifically to design a kind of macromolecule-three-dimensional carbon skeleton
Preparation method, product and the application of condensation material.
Background technique
Timber is one of the most abundant natural material of resource on the earth, because its convenient and fast source, good processability and
Mechanical performance and widely paid close attention to.The microchannel for conveying the vertical arrangement of nutriment and water for trees imparts timber respectively to different
Property and porous structure, the hierarchical structure of wood also provide unlimited possibility for constructing function material.Hardwood in timber is
The trees for referring to defoliation common are toothed oak wood, and Manchurian ash, ash wood, birch, elm, jujube wood isodensity and hardness are all higher
The general name of a kind of timber.Hardwood is derived from the spire forest of fallen leaves property more, including oak, peach heart wood and birch, yellow jacket, hard maple be red
It raises, beech, Chinese littleleaf box etc., usual price is higher, but the quality cork that compares is excellent.The general density of hardwood is higher and stronger.It is soft
It is wooden then be that the tree species such as cork oak, cork oak produce, it is to be composed of many flat cells, and this cell interior is full of
Air so that the cork constantly grown shows very soft state.
Make have the internal structures such as continuous hole, access in composite material, can help to improve compound it is thermally conductive, lead
Electrical property.However, filler is all mainly total by melt blending, solution in traditional polymer composite preparation process
Mixed method etc. makes its unordered dispersion in the base, and could usually form continuous path in the base under high amount of filler, thus often
Filler reunion can be often caused to cause thermal conductivity to decline and substrate performance is made to be affected.Moreover, high amount of filler again will be inevitable
Ground causes difficulty of processing to increase the rising with cost.
Therefore, how research uses lower amount of filler and can obtain high-quality, high evenness, and inside has continuous
Hole, access structure, and the high molecular material with good thermally conductive, conductive, mechanics and electromagnetic shielding performance, and develop one
The preparation method of kind efficiently, inexpensive, just becomes more important.
Summary of the invention
The purpose of the present invention is to provide a kind of macromolecule-three-dimensional carbon skeleton composite material preparation method, it is efficient, low at
This；Another object of the present invention provides a kind of macromolecule-three-dimensional carbon skeleton composite material, by the natural void structure of timber,
So that it is had a variety of excellent performances such as thermally conductive, conductive, electromagnetic shielding concurrently, can be widely applied for the preparation of electromagnetic shielded product.
To achieve the above object, the technical solution adopted by the present invention is that:
A kind of preparation method of macromolecule-three-dimensional carbon skeleton composite material, which is characterized in that it includes the following steps:
(A) the carbonization framework material of three-dimensional structure is prepared:
(1) it by selected timber, is required according to design size, is cut into multiple wooden units；
(2) by 1~2.5molL-1NaOH and 0.4~0.8molL-1Na2O3It is dissolved in distilled water, is configured to
Remove the lye of lignin；
(3) wooden unit is immersed in the lye of removal lignin, and it is placed in autoclave together, at 150~200 DEG C
After 6~12h of lower placement, takes out and clean, wooden unit intermediate is made；
(4) wooden unit intermediate is placed in the H of 30wt%2O2After in solution, boiling, bleach, drying, wooden unit supporter is made；
(B) macromolecule matrix is prepared, is one or more of thermosetting property high temperature resistant or thermoplasticity heat-resisting material
Composition；
(C) macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity:
Make the wooden unit supporter be carbonized then to contact with high molecular material again, or make the wooden unit supporter with
High molecular material contact, is then carbonized again, and it is compound that porous structure macromolecule-three-dimensional carbon skeleton that porosity is 1~15% is made
Material.
The macromolecule-three-dimensional carbon skeleton composite material preparation method, which is characterized in that choosing in the step (1)
Fixed timber, for the internal hardwood or cork with stereochemical structure.
The macromolecule-three-dimensional carbon skeleton composite material preparation method, which is characterized in that in the step (B)
Macromolecule matrix is that thermosetting property thermostable phenolic resin, epoxy resin, polyimide resin or thermoplasticity commodity polymer are poly-
Ethylene, polypropylene, polyvinyl chloride, polycarbonate, polyethylene terephthalate, polybutylene terephthalate, polyamide and
Polystyrene or thermoplasticity heat resistant polyamide, polyimides, polyformaldehyde, polyphenylene sulfide, polyether sulfone, one in polyether-ether-ketone
Kind or several combinations.
The macromolecule-three-dimensional carbon skeleton composite material preparation method, which is characterized in that in the step (C)
Macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity, specifically comprises the following steps:
(1) the wooden unit supporter after will be processed is placed in tube furnace, is warming up to the heating rate of 2~10 DEG C/min
280~330 DEG C, it is passed through N2It is pyrolyzed 3~6h, the carbonization wooden unit with porous structure is made；
(2) it by thermoplasticity commodity polymer toner and above-mentioned carbonization wooden unit, is placed in high temperature and pressure thermal response kettle, if
It sets that pressure is 1~2MPa, temperature is 120~260 DEG C, after 3~5 pre-compacteds are handled, the height that porosity is 1~5% is made
Molecule-three-dimensional carbon skeleton composite material.
The macromolecule-three-dimensional carbon skeleton composite material preparation method, which is characterized in that in the step (C)
Macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity, specifically comprises the following steps:
(1) thermoplasticity fire resistant polymer is dissolved in organic reagent (paraxylene, trichloro-benzenes, methylene chloride, tetrahydro furan
Mutter, cyclohexanone, ketone, dimethylformamide, hexane, benzene, formic acid, toluene, butyl acetate, carbon disulfide etc.) in, it is configured to dense
The solution that degree is 5~25%；
(2) by the submergence of processed wooden unit supporter in the solution 4~for 24 hours after, be placed in baking oven, transferred at 60~80 DEG C
Set 48~72h；
(3) it is placed in tube furnace, is warming up to 280~330 DEG C with the heating rate of 2~10 DEG C/min, is passed through N2Pyrolysis 3~
6h, make its carbonization, macromolecule-three-dimensional carbon skeleton composite material that porosity is 5~15% is made.
The macromolecule-three-dimensional carbon skeleton composite material preparation method, which is characterized in that in the step (C)
Macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity, specifically comprises the following steps:
(1) the wooden unit supporter after will be processed is immersed in thermosetting macromolecule monomer, does elevated cure processing；
(2) it places it in tube furnace again, is warming up to 280~330 DEG C with the heating rate of 2~10 DEG C/min, is passed through N2
3~6h of pyrolysis, make its carbonization, macromolecule-three-dimensional carbon skeleton composite material that porosity is 5~15% is made.
A kind of macromolecule-three-dimensional carbon skeleton composite material prepared using the above method, which is characterized in that the composite material
With carbonization framework supporting structure, mainly consist of two parts: a portion is the carbonization with interior three-dimensional pore structure
Skeleton, another part are macromolecule matrix；And the macromolecule matrix is uniformly distributed in the interior three-dimensional of the carbonization skeleton
In pore structure, porosity is 1~15%.
The macromolecule-three-dimensional carbon skeleton composite material, which is characterized in that its preparation for being applied to electromagnetic shielded product,
With excellent thermally conductive, conductive, porous hole structure and mechanical property, extinction efficiency wide to the absorption frequency range of electromagnetic wave
It is high.
Preparation method provided by the invention, material source is extensive, preparation process is efficient, and rational technology reduces costs.
The present invention provides composite material, and the timber after the carbonization just used belongs to resistor-type absorbent, can be in composite material
Inside forms the thermally conductive, galvanic circle of continuous thermally conductive, conductive network or part, makes medium under Electromagnetic Field by electric field pole
Change, easily establishes vortex, be predominantly absorbed energy of electromagnetic field finally in the form of heat.Meanwhile the composite material has mostly sky
Gap, this is conducive to form incident electromagnetic wave multiple scattering points, and electromagnetic wave energy during Multiple Scattering is gradually consumed, right
The absorption frequency range of electromagnetic wave is wide, extinction efficiency is high.
Composite material provided by the invention can construct access by the natural skeleton and pore structure of timber after carbonization,
A kind of macromolecule with multifrequency nature-three-dimensional carbon skeleton composite material can be prepared after compound with high molecular material: 1, by
The natural structure of timber can make the material have thermally conductive, conductive and electro-magnetic screen function in conjunction with a variety of preparation methods.2, there is carbon
The polymer composite of skeletal support, with excellent mechanical property.
Specific embodiment
Further to illustrate the present invention to reach the technical means and efficacy that predetermined purpose is taken, below in conjunction with preferable
Embodiment, detailed description of specific embodiments of the present invention.
Embodiment 1:
A kind of macromolecule-three-dimensional carbon skeleton composite material and preparation method provided in this embodiment, the composite material
Main group becomes polyamide and carbonization wooden unit.
A kind of preparation method of macromolecule-three-dimensional carbon skeleton composite material comprising following steps:
(A) the carbonization framework material of three-dimensional structure is prepared:
(1) it by selected timber, such as birch, ash, requires according to design size, such as the cuboid of 30*20*5mm, cuts
Multiple wooden units are segmented into, for use；The selected timber, for the internal hardwood with stereochemical structure；
(2) by 1~2.5molL-1NaOH and 0.4~0.8molL-1Na2O3It is dissolved in distilled water, is configured to
Remove the lye of lignin；
(3) wooden unit is immersed in the lye of removal lignin, and it is placed in autoclave together, at 150~200 DEG C
After 6~12h of lower placement, takes out and clean, wooden unit intermediate is made；
(4) wooden unit intermediate is placed in the H of 30wt%2O2After in solution, boiling, bleach, drying, wooden unit supporter is made；
(B) macromolecule matrix is prepared, is the composition of one or more of thermosetting property heat-resisting material, the present embodiment
In, it is polyamide；
(C) macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity:
Make the wooden unit supporter be carbonized then to contact with high molecular material polyamide again, be then carbonized, make again
Obtain porous structure macromolecule-three-dimensional carbon skeleton composite material that porosity is 1~15%.
A kind of macromolecule-three-dimensional carbon skeleton composite material prepared using the above method, the composite material have carbonization bone
Frame support structure mainly consists of two parts: a portion is the carbonization skeleton with interior three-dimensional pore structure, another portion
It is divided into macromolecule matrix polyamide；And the macromolecule matrix polyamide is uniformly distributed in the carbonization skeleton
In interior three-dimensional pore structure, porosity is 1~15%.
The macromolecule-three-dimensional carbon skeleton composite material is applied to the preparation of electromagnetic shielded product, has excellent lead
Heat, conductive, porous hole structure and mechanical property, it is wide to the absorption frequency range of electromagnetic wave, extinction efficiency is high.
The size of composite material porosity, it is related with the internal structure of carbonization wooden unit itself and content of lignin, it selects not
With the timber of structure and content of lignin, the porosity of obtained composite material has corresponding variation.
Embodiment 2:
Preparation method, material and its application of a kind of macromolecule-three-dimensional carbon skeleton composite material provided in this embodiment, should
Main group of composite material becomes polyamide and carbonization wooden unit, and substantially same as Example 1, difference exists
In:
(1) timber that will be selected, such as China fir are required according to design size, such as the cuboid of 20*10*2.5mm, after cutting
For use；
It (2) is 1molL by concentration-1NaOH and 0.8molL-1Na2O3, it is dissolved in distilled water, is configured to wood
Quality removes liquid；
(3) wooden unit is immersed in lignin removal liquid again and is placed it in autoclave, after placing 12h at 150 DEG C
Take out cleaned standby seam；
(4) 30% H will be placed in the good wooden unit of base extraction before2O2In solution, boils bleaching drying and be placed on tubular type
In furnace, 280 DEG C are warming up to the heating rate of 2 DEG C/min, is passed through N2It is pyrolyzed 3h, can be prepared by the carbide wood with porous structure
Block, for use；
(5) polyamide resin powders are prepared；The present embodiment is specifically using polyamide Dupont 101L powder 500
Mesh；
(6) polyamide resin powders and carbonization wooden unit are placed in high temperature and pressure thermal response kettle, setting pressure is 2MPa, temperature
Degree is 260 DEG C, and after 3 pre-compacteds are handled, macromolecule-three-dimensional carbon skeleton composite material that porosity is 3~5% is made.
Embodiment 3:
Preparation method, material and its application of a kind of macromolecule-three-dimensional carbon skeleton composite material provided in this embodiment, base
It is identical as embodiment 1,2 in sheet, the difference is that, the group of the composite material becomes polyimide resin and carbonization wooden unit,
Preparation method includes the following steps:
(1) selected timber is required after being cut according to design size for use, by NaOH (2.5molL-1) and
Na2O3(0.4mol·L-1) be dissolved in distilled water, it is configured to lignin removal liquid.Wooden unit is immersed in lignin removal liquid again
In and place it in autoclave, at 200 DEG C place 6h after take out cleaned standby seam；It will be before in the good wooden unit of base extraction
Mesosome is placed in 30% H2O2In solution, boils bleaching drying and be placed in tube furnace, be warming up to the heating rate of 10 DEG C/min
330 DEG C, it is passed through N2It is pyrolyzed 6h, can be prepared by the carbonization wooden unit supporter with porous structure, for use；
(2) polyimides is prepared, specifically using Dupont kapton in the present embodiment；
(3) polyimides is dissolved in dimethylformamide, is configured to the solution that concentration is 25%, by carbonization wooden unit leaching
Not in the solution for 24 hours, it is fully infiltrated into solution in the hole of wooden unit to be placed in baking oven, can be made after being placed for 24 hours at 80 DEG C
Standby macromolecule-three-dimensional carbon skeleton composite material of the porosity 5~10%.
In other embodiments, organic reagent may also is that paraxylene, trichloro-benzenes, methylene chloride, tetrahydrofuran, hexamethylene
Ketone, ketone, hexane, benzene, formic acid, toluene, butyl acetate, carbon disulfide etc..
Embodiment 4:
Preparation method, material and its application of a kind of macromolecule-three-dimensional carbon skeleton composite material provided in this embodiment, base
It is identical as embodiment 1,2,3 in sheet, the difference is that, the macromolecule-three-dimensional carbon skeleton composite material, mainly organizing becomes
Polystyrene resin and carbonization wooden unit.
Preparation method are as follows:
(1) by selected timber, such as linden requires stand-by after being cut according to design size；By NaOH (1molL-1) and Na2O3(0.8mol·L-1) be dissolved in distilled water, it is configured to lignin removal liquid；Wooden unit is immersed in lignin again
Except in liquid and placing it in autoclave, cleaned standby seam is taken out after placing 12h at 150 DEG C.It will be good with base extraction before
Wooden unit is placed in 30% H2O2In solution, boils bleaching drying and be placed in tube furnace, be warming up to the heating rate of 2 DEG C/min
280 DEG C, it is passed through N2 pyrolysis 3h, can be prepared by the carbonization wooden unit with porous structure, for use；
(2) polystyrene resin is prepared, the present embodiment specifically selects platform GP5250；
(3) polystyrene resin and carbonization wooden unit are placed in high temperature and pressure thermal response kettle, setting pressure is 1MPa, temperature
It is 120 DEG C, macromolecule-three-dimensional carbon skeleton composite material that porosity is 5~12% can be prepared after 5 pre-compacteds are handled.
Embodiment 5:
Preparation method, material and its application of a kind of macromolecule-three-dimensional carbon skeleton composite material provided in this embodiment, base
It is substantially the same in sheet with embodiment 1-4, the difference is that, this macromolecule-three-dimensional carbon skeleton composite material is main
Group becomes polyimide resin and carbonization wooden unit.
Preparation method are as follows:
(1) by selected timber, it is poplar or willow, requires after being cut according to design size for use, by NaOH
(2mol·L-1) and Na2O3(0.5mol·L-1) be dissolved in distilled water, it is configured to lignin removal liquid.Wooden unit is immersed in again
It in lignin removal liquid and places it in autoclave, takes out cleaned standby seam after placing 5h at 200 DEG C.It will be before at lye
The wooden unit managed is placed in 30% H2O2In solution, boils bleaching drying and be placed in tube furnace, with the heating rate of 8 DEG C/min
330 DEG C are warming up to, N is passed through2It is pyrolyzed 6h, can be prepared by the carbonization wooden unit with porous structure, for use；
(2) polyimides, specially Dupont kapton are prepared；
(3) in methylene chloride by polyimides dissolution, it is configured to the solution that concentration is 5%, carbonization wooden unit is immersed in
4h in solution is fully infiltrated into solution in the hole of wooden unit and is placed in baking oven, can prepare hole after placing 48h at 60 DEG C
Macromolecule-three-dimensional carbon skeleton composite material of the rate 8~10%.
Embodiment 6:
Preparation method, material and its application of a kind of macromolecule-three-dimensional carbon skeleton composite material provided in this embodiment, base
It is substantially the same in sheet with embodiment 1-5, the difference is that, the macromolecule-three-dimensional carbon skeleton composite material is main
Group becomes thermosetting epoxy resin and carbonization wooden unit.
Preparation method are as follows:
(1) selected timber is required after being cut according to design size for use, by NaOH such as cork or paulownia wood
(2mol·L-1) and Na2O3(0.5mol·L-1) be dissolved in distilled water, it is configured to lignin removal liquid.Wooden unit is immersed in again
It in lignin removal liquid and places it in autoclave, takes out cleaned standby seam after placing 5h at 200 DEG C.It will be before at lye
The wooden unit managed is placed in 30% H2O2In solution, after boiling bleaching drying, for use；
(2) epoxy resin U.S. connection carbon PKFE is prepared；
(3) wooden unit is immersed in high temperature resistant type epoxy monomer solution to handle through elevated cure and is placed on tube furnace
In, 330 DEG C are warming up to the heating rate of 8 DEG C/min, is passed through N2It is pyrolyzed 6h, the high score that porosity is 13~15% can be prepared
Son-three-dimensional carbon skeleton composite material.
The performance test results of material obtained by above-described embodiment are as follows:
The timber selected in the step (1) can also be the internal others with stereochemical structure in other embodiments
Hardwood or cork.
Macromolecule matrix material in the step (B) can be thermosetting property high temperature resistance phenolic aldehyde tree in other embodiments
Rouge, epoxy resin, polyimide resin or thermoplasticity commodity polymer polyethylene, polyvinyl chloride, polycarbonate, gather polypropylene
Ethylene terephthalate, polybutylene terephthalate, polyamide and polystyrene or thermoplasticity heat resistant polyamide gather
One of acid imide, polyformaldehyde, polyphenylene sulfide, polyether sulfone, polyether-ether-ketone or several combinations.
The above described is only a preferred embodiment of the present invention, being not intended to limit the present invention in any form.Appoint
What those skilled in the art, without departing from the scope of the technical proposal of the invention, all using the side of the disclosure above
Method and technology contents make many possible changes and modifications to technical solution of the present invention, or are revised as the equivalent reality of equivalent variations
Apply example.Therefore anything that does not depart from the technical scheme of the invention, equivalent change made by shape according to the present invention, construction and principle
Change, should all be covered by protection scope of the present invention.
Claims (8)
1. a kind of macromolecule-three-dimensional carbon skeleton composite material preparation method, which is characterized in that it includes the following steps:
(A) the carbonization framework material of three-dimensional structure is prepared:
(1) it by selected timber, is required according to design size, is cut into multiple wooden units；
(2) by 1~2.5molL-1NaOH and 0.4~0.8molL-1Na2O3It is dissolved in distilled water, is configured to remove
The lye of lignin；
(3) wooden unit is immersed in the lye of removal lignin, and it is placed in autoclave together, transferred at 150~200 DEG C
After setting 6~12h, takes out and clean, wooden unit intermediate is made；
(4) wooden unit intermediate is placed in the H of 30wt%2O2After in solution, boiling, bleach, drying, wooden unit supporter is made；
(B) macromolecule matrix is prepared, is the combination of one or more of thermosetting property high temperature resistant or thermoplasticity heat-resisting material
Object；
(C) macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity:
Make the wooden unit supporter be carbonized then to contact with high molecular material again, or makes the wooden unit supporter and high score
Sub- material, is then carbonized again, and porous structure macromolecule-three-dimensional carbon skeleton composite material that porosity is 1~15% is made.
2. macromolecule according to claim 1-three-dimensional carbon skeleton composite material preparation method, which is characterized in that described
The timber selected in step (1), for the internal hardwood or cork with stereochemical structure.
3. macromolecule according to claim 1-three-dimensional carbon skeleton composite material preparation method, which is characterized in that described
Macromolecule matrix in step (B) is that thermosetting property thermostable phenolic resin, epoxy resin, polyimide resin or thermoplasticity are logical
With high molecular polythene, polypropylene, polyvinyl chloride, polycarbonate, polyethylene terephthalate, poly terephthalic acid fourth two
Ester, polyamide and polystyrene or thermoplasticity heat resistant polyamide, polyimides, polyformaldehyde, polyphenylene sulfide, polyether sulfone, polyethers
One of ether ketone or several combinations.
4. macromolecule according to claim 1-three-dimensional carbon skeleton composite material preparation method, which is characterized in that described
Macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity in step (C), specifically comprises the following steps:
(1) will it is processed after wooden unit supporter be placed in tube furnace, be warming up to 280 with the heating rate of 2~10 DEG C/min~
330 DEG C, it is passed through N2It is pyrolyzed 3~6h, the carbonization wooden unit with porous structure is made；
(2) it by thermoplasticity commodity polymer toner and above-mentioned carbonization wooden unit, is placed in high temperature and pressure thermal response kettle, setting pressure
Strong is 1~2MPa, temperature is 120~260 DEG C, and after 3~5 pre-compacteds are handled, the macromolecule-that porosity is lower than 5% is made
Three-dimensional carbon skeleton composite material.
5. macromolecule according to claim 1-three-dimensional carbon skeleton composite material preparation method, which is characterized in that described
Macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity in step (C), specifically comprises the following steps:
(1) by thermoplasticity fire resistant polymer be dissolved in organic reagent (paraxylene, trichloro-benzenes, methylene chloride, tetrahydrofuran,
Cyclohexanone, ketone, dimethylformamide, hexane, benzene, formic acid, toluene, butyl acetate, carbon disulfide etc.) in, it is configured to concentration
For 5~25% solution；
(2) by the submergence of processed wooden unit supporter in the solution 4~for 24 hours after, be placed in baking oven, place 48 at 60~80 DEG C
~72h；
(3) it is placed in tube furnace, is warming up to 280~330 DEG C with the heating rate of 2~10 DEG C/min, is passed through N23~6h of pyrolysis, make
It is carbonized, and macromolecule-three-dimensional carbon skeleton composite material that porosity is 5~15% is made.
6. macromolecule according to claim 1-three-dimensional carbon skeleton composite material preparation method, which is characterized in that described
Macromolecule-three-dimensional carbon skeleton composite material of preparation setting porosity in step (C), specifically comprises the following steps:
(1) the wooden unit supporter after will be processed is immersed in thermosetting macromolecule monomer, does elevated cure processing；
(2) it places it in tube furnace again, is warming up to 280~330 DEG C with the heating rate of 2~10 DEG C/min, is passed through N2Pyrolysis 3
~6h, make its carbonization, macromolecule-three-dimensional carbon skeleton composite material that porosity is 5~15% is made.
7. a kind of macromolecule-three-dimensional carbon skeleton composite material prepared using above-mentioned one of 1~6 the method, which is characterized in that
The composite material has carbonization framework supporting structure, mainly consists of two parts: a portion is with interior three-dimensional hole
The carbonization skeleton of structure, another part are macromolecule matrix；And the macromolecule matrix is uniformly distributed in the carbonization skeleton
Interior three-dimensional pore structure in, porosity be 1~15%.
8. macromolecule-three-dimensional carbon skeleton composite material according to claim 7, which is characterized in that it is applied to electromagnetic shielding
The preparation of product, with excellent thermally conductive, conductive, porous hole structure and mechanical property, to the absorption frequency range of electromagnetic wave
Wide, extinction efficiency height.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110838425A (en) * | 2019-12-07 | 2020-02-25 | 福建工程学院 | Three-dimensional carbon array cathode structure modified by metal titanium and preparation method thereof |
| CN112078217A (en) * | 2020-09-02 | 2020-12-15 | 中国林业科学研究院林业新技术研究所 | Preparation method of wood reinforced thermoplastic resin-based environment-friendly formaldehyde-free composite material |
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| CN110838425A (en) * | 2019-12-07 | 2020-02-25 | 福建工程学院 | Three-dimensional carbon array cathode structure modified by metal titanium and preparation method thereof |
| CN112078217A (en) * | 2020-09-02 | 2020-12-15 | 中国林业科学研究院林业新技术研究所 | Preparation method of wood reinforced thermoplastic resin-based environment-friendly formaldehyde-free composite material |
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