CN105887463A - Microwave radiation treatment method and microwave radiation treatment device for improving surface activity of carbon fibers - Google Patents
Microwave radiation treatment method and microwave radiation treatment device for improving surface activity of carbon fibers Download PDFInfo
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- CN105887463A CN105887463A CN201610261418.7A CN201610261418A CN105887463A CN 105887463 A CN105887463 A CN 105887463A CN 201610261418 A CN201610261418 A CN 201610261418A CN 105887463 A CN105887463 A CN 105887463A
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M10/00—Physical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. ultrasonic, corona discharge, irradiation, electric currents, or magnetic fields; Physical treatment combined with treatment with chemical compounds or elements
- D06M10/003—Treatment with radio-waves or microwaves
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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
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
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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
- C08K9/00—Use of pretreated ingredients
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
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Abstract
The invention discloses a microwave radiation treatment method and a microwave radiation treatment device for improving the surface activity of carbon fibers. The microwave radiation treatment method and the microwave radiation treatment device have the advantages that TE10 transverse electric waves are subjected to single-mode transmission in metal rectangular waveguides by the aid of microwave generated in a microwave generator, and the carbon fibers are subjected to radiation treatment by the aid of microwave energy via a flared antenna; the carbon fibers are etched by the microwave, accordingly, the depths of grooves in the surfaces of the carbon fibers can be increased, and the roughness of the surfaces of the carbon fibers can be improved; bonding of single crystals on the surfaces of the carbon fibers is destroyed under the radiation effects of the microwave, accordingly, active carbon atom points can be increased, O/C atomic ratios of the surfaces of the carbon fibers can be increased, and the contents of oxygen-containing active functional groups can be increased; surface energy of the treated carbon fibers can be increased, accordingly, the activity of the carbon fibers can be improved, and the microwave radiation treatment method and the microwave radiation treatment device are favorable for forming excellent interfaces between the carbon fibers and resin matrixes.
Description
Technical field
The present invention relates to polymer matrix composites production field, be specifically related to the method and device of a kind of carbon fiber surface oxidation modification.
Background technology
Carbon fiber proportion is little, has the highest specific strength, specific modulus, high temperature resistant, conduction, heat conduction, corrosion-resistant and mechanical property is excellent
Different, current carbon fiber is mainly used as reinforcement material, manufactures high performance resin based composites, is widely used in Aero-Space, army
The fields such as thing equipment, the energy and transportation.Carbon fiber is graphite microcrystalline structure, and surface inertness is big, with the cementability of resin matrix
Can be poor, for giving full play to the excellent properties of carbon fiber, need carbon fiber surface is carried out activation processing, high performance to obtain
Carbon fiber enhancement resin base composite material.Carbon fiber surface treatment method mainly has vapour phase oxidation process, liquid phase oxidation, electrification at present
Learning oxidizing process, surface coated treatment etc., complex treatment process, energy consumption is high, and with high temperature, Strong oxdiative etc., industrial operation is difficult
Degree is big.Therefore find a kind of simple to operate, efficient surface modifying method of mental retardation and there is important practical significance.
Summary of the invention
It is an object of the invention to provide the microwave radiation processing method and apparatus that a kind of carbon fiber surface activity improves, utilize microwave pair
Carbon fiber surface carries out the radiation of short time, to change the chemical composition of carbon fiber surface, increases surface roughness, improves carbon fiber
Surface activity, makes carbon fiber enhancement resin base composite material have more preferable interfacial adhesion.
To achieve the above object, the present invention takes following technical scheme:
A kind of microwave radiation processing method that carbon fiber surface activity improves, including: under air ambient, use at microwave radiation
Reason device carries out radiation treatment to carbon fiber.
Further, during radiation treatment, carbon fiber length direction is vertical with the microwave electric field direction that microwave radiation processing device sends.
Further, the microwave frequency that microwave radiation processing device sends is 2450MHz ± 50MHz；Microwave power be 100W～
300W, the microwave radiation processing time is 30～180s.
Further, microwave radiation processing device includes that metal rectangular waveguide, metal rectangular waveguide dimensions meet single mode transport condition,
I.e. lowest order mode formula TE10 H mode can transmit, and higher modes are suppressed；Electric field is only perpendicular to dividing of rectangular waveguide long side direction
Amount, is sinusoidal variations along rectangular waveguide long side direction；Carbon fiber length direction is parallel with the long side direction of metal rectangular waveguide.
Further, metal rectangular waveguide bottom arranges antenna for radiating microwave；Antenna for radiating microwave is metal bell-mouth antenna；Loudspeaker
Mouth antenna bottom is square；The S11 parameter of bell-mouth antenna is less than-25dB.
Further, described carbon fiber is not remove the carbon fiber of sizing agent or remove the carbon fiber of sizing agent.
The microwave radiation device that a kind of carbon fiber surface activity improves, including providing the microwave generator of microwave energy, microwave transmission
Cable, microwave transmission system, microwave transmission antenna, substrate and microwave radiation shielding camera bellows；The outfan of microwave generator passes through
Microwave transmission cable connects microwave transmission system, and microwave transmission system is fixed in microwave radiation shielding camera bellows, microwave transmission system
Bottom is fixed with microwave transmission antenna, and the lower section of microwave transmission antenna is provided with the substrate being placed on bottom microwave radiation shielding camera bellows.
Further, microwave generator is solid state microwave generator or microwave magnetron generator, and microwave frequency is 2450MHz
± 50MHz, microwave generator radiant power is 100W～300W continuously adjustabe.
Further, microwave transmission system is metal rectangular waveguide, and waveguide dimensions meets single mode transport condition: lowest order mode formula TE10
H mode can transmit, and higher modes are suppressed；Electric field is only perpendicular to the component of rectangular waveguide long side direction, along the long limit of rectangular waveguide
Direction is sinusoidal variations；Antenna for radiating microwave is metal bell-mouth antenna；It is square bottom bell-mouth antenna, bell-mouth antenna
S11 parameter is less than-25dB.
Further, carbon fiber is placed on substrate upper substrate is nonmetallic materials；Carbon fiber length direction and metal rectangular waveguide
Long side direction is parallel.
Further, microwave radiation shielding camera bellows is internal is wedge shape absorbing material, a length of 100mm of wedge.
Compared with prior art, the method have the advantages that
The present invention is directed to carbon fiber surface inertia big, low with interfacial adhesion strength during resin compounded, it is impossible to give full play to carbon fiber strong
The problem of degree advantage, it is provided that a kind of efficiently, flexible operation, can the microwave that carbon fiber surface activity be improved of industrialization continuous processing
Method of radiating and device.Microwave radiation modified carbon fiber can room temperature, without catalyst in the case of initiation reaction, be green technology
A kind of development trend.Described method utilizes continuous wave that solid state microwave generator produces or the pulse that microwave magnetron generator produces
Ripple, carries out the radiation treatment in short-term of 30～180s to carbon fiber, and radiant power is 100～300W continuously adjustabe.In rectangular waveguide
Microwave mode be fixed as single mode H mode TE10.The direction of propagation of H mode is perpendicular to orientation substrate, impinges perpendicularly on carbon fiber
Surface.The direction of an electric field of microwave is parallel to base plan, and parallel with the broadside of rectangular waveguide.During microwave radiation carbon fiber,
Carbon fiber is placed on composite wood substrate, and the thickness of substrate is 3～5cm, and dielectric constant is 3.9.Simultaneously, it is ensured that the length of fiber
Degree is oriented parallel to the long side direction of rectangular waveguide, is i.e. perpendicular to the direction of an electric field of microwave.After microwave radiation 30s, carbon fiber temperature
Up to 150 DEG C, fiber surface groove is deepened, and roughness becomes big.Carbon fiber surface after process is aoxidized, 0/C atomic ratio liter
Height, oxygen-containing functional group content rises.Meanwhile, microwave energy changes the size of fiber surface graphite microcrystal, in lattice disorder degree
Rising, mono-crystalline structures is destroyed, and active atoms of carbon point increases.Described result all improves carbon fibre surface energy, adds fiber table
Face activity.
The present invention utilizes microwave that carbon fiber surface is carried out radiation treatment, it is possible to be effectively improved the interface characteristics of carbon fiber and resin matrix
Can, significantly improve the interlaminar shear strength of composite.The method is simple to operate flexibly, and energy consumption is low, and efficiency is high, the carbon after process
Fiber surface activity is high, it is possible to achieve automatization's continuous processing, can form, with resin compounded, fiber/tree that interface shear strength is higher
Fat interface；Have broad application prospects in carbon fiber production and field of compound material.
Accompanying drawing explanation
Fig. 1 is the microwave radiation device schematic diagram that the carbon fiber surface activity that the present invention proposes improves.
Wherein: for microwave generator, for microwave transmission cable, for microwave transmission system, for microwave transmission antenna, for substrate,
Camera bellows is shielded for microwave radiation.
Fig. 2 is carbon fiber surface pattern atomic force microscopy；Wherein Fig. 2 (a) is the carbon fiber without microwave radiation,
Fig. 2 (b) is carbon fiber after microwave radiation processing.
Fig. 3 is the x-ray photoelectron energy spectrogram C peak swarming figure of carbon fiber surface, and wherein Fig. 3 (a) is without microwave radiation
Carbon fiber, Fig. 3 (b) is carbon fiber after microwave radiation processing.
Fig. 4 is carbon fiber surface and resin matrix contact angle figure, and wherein Fig. 4 (a) is the carbon fiber without microwave radiation and tree
Fat infiltrates, and Fig. 4 (b) is carbon fiber and resin infiltration after microwave radiation processing.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings, and the explanation of the invention is not limited.
Referring to shown in Fig. 1, the microwave radiation device that a kind of carbon fiber surface activity of the present invention improves, including providing microwave energy
Microwave generator 1, microwave transmission cable 2, microwave transmission system 3, microwave transmission antenna 4, substrate 5 and microwave radiation shielding
Camera bellows 6.
Microwave generator 1 is arranged on microwave radiation shielding camera bellows 6, and the guidance panel of microwave generator 1 is positioned at microwave radiation shielding
Camera bellows 6 surface, to facilitate operation.The outfan of microwave generator 1 connects microwave transmission system 3 by microwave transmission cable 2,
Microwave transmission system 3 is fixed in microwave radiation shielding camera bellows 6, and the bottom of microwave transmission system 3 is fixed with microwave transmission antenna 4,
The lower section of microwave transmission antenna 4 is provided with the substrate 5 being placed on bottom microwave radiation shielding camera bellows 6.Microwave radiation shielding camera bellows 6
Inside is wedge shape absorbing material, a length of 100mm of wedge.
Microwave generator 1 is solid state microwave generator or microwave magnetron generator, and wherein solid state microwave generator produces Electromagnetic Continuous
Ripple, microwave magnetron generator produces pulse electromagnetic wave.Microwave frequency is 2450MHz ± 50MHz.Microwave generator 1 radiates
Power is 100W～300W continuously adjustabe.Microwave transmission system 3 is metal rectangular waveguide, and waveguide dimensions meets single mode transport bar
Part, i.e. lowest order mode formula TE10 H mode can transmit, and higher modes are suppressed.Electric field is only perpendicular to rectangular waveguide long side direction
Component, be sinusoidal variations along rectangular waveguide long side direction.Antenna for radiating microwave 4 is metal bell-mouth antenna.Bottom electromagnetic horn
In the range of change in size, the S11 parameter of electromagnetic horn is met less than-25dB for square, the length of side and antenna height.
During microwave radiation carbon fiber, air is as radiation medium, and it is non-that carbon fiber is placed in microwave radiation shielding camera bellows 6
On metal basal board 5.
Carbon fiber length direction is parallel with the long side direction of microwave transmission system rectangular waveguide, i.e. vertical with microwave electric field direction.At this
Under radiation mode, carbon fiber is internal produces the electric current being perpendicular to fibre length direction, and fiber temperature raises.Fiber surface after process
Roughness becomes big, and gully is deepened.Carbon fiber is aoxidized simultaneously, and oxygen-containing functional group increases.The surface of microwave radiation processing carbon fiber
Can increase, surface activity improves.
Embodiment 1
A kind of microwave radiation processing method that carbon fiber surface activity improves, comprises the following steps:
Step 1: eastern beautiful T300 fibre bundle is extracted 48 hours in acetone, to remove the sizing agent of fiber surface.
Step 2: by removing the most ultrasonic 1 hour of the carbon fiber of sizing agent, to remove the acetone reagent of fiber surface.
Step 3: the carbon fiber taken out in deionized water is placed on dried 24 hours under the conditions of 60 DEG C of vacuum drying oven, with
Ensure that carbon fiber surface is dried to obtain non-starching T300 fiber.
Step 4: be placed on non-metal base plate 5 by non-starching T300 fiber, wherein the dielectric constant of substrate is 3.9.Adjust carbon
The angle of fiber, it is ensured that carbon fiber length direction is parallel with the long limit of rectangular waveguide, i.e. vertical with microwave electric field direction.
Step 5: carbon fiber is radiated by the continuous wave using solid state microwave generator 1 to produce, and the size of rectangular waveguide 3 is 90
× 45 × 165mm, the antenna for radiating microwave horn mouth base length of side is 165mm, and electromagnetic horn height is 240mm.Microwave radiation
Power is 150W, and microwave frequency is 2500MHz, and radiated time is 180s.I.e. obtain surface activity after microwave radiation processing to carry
High non-starching carbon fiber.
Embodiment 2
A kind of microwave radiation processing method that carbon fiber surface activity improves, comprises the following steps:
Step 1: by eastern beautiful T700 fibre bundle deionized water ultrasonic 1 hour, to remove the impurity of fiber surface.
Step 2: dried 24 hours under the conditions of the carbon fiber of taking-up is placed on 60 DEG C of vacuum drying oven in deionized water, to protect
Card carbon fiber surface is dried.
Step 3: be placed on non-metal base plate by starching T700 fiber, wherein the dielectric constant of substrate is 3.9.Adjust carbon fiber
Angle, it is ensured that carbon fiber length direction is parallel with the long limit of microwave transmission system rectangular waveguide, i.e. vertical with microwave electric field direction.
Step 4: carbon fiber is radiated by the pulse electromagnetic wave using microwave magnetron generator to produce, and determines microwave transmission system
The size of rectangular waveguide is 90 × 45 × 75mm, and the antenna for radiating microwave horn mouth base length of side is 150mm, electromagnetic horn height
For 100mm.Microwave irradiation power is 300W, and microwave frequency is 2450MHz, and radiated time is 90s.After microwave radiation processing
I.e. obtain the starching carbon fiber that surface activity improves.
Fig. 2 is that the present invention uses embodiment 2 to carbon fiber surface atomic force microscopy after carbon fiber microwave radiation processing.Figure
2 (a) is the starching T700 fiber without microwave radiation processing, and Fig. 2 (b) is the T700 after using embodiment 2 microwave radiation processing
Fiber.It can be seen that the carbon fiber surface gully after microwave radiation processing is deepened, surface roughness becomes big.
Fig. 3 is that the present invention uses embodiment 2 to contain each oxygen-containing functional group at carbon fiber surface C peak after carbon fiber microwave radiation processing
Amount.Fig. 3 (a) is the starching T700 fiber without microwave radiation processing, after Fig. 3 (b) is for using embodiment 2 microwave radiation processing
T700 fiber.It can be seen that the carbon fiber surface after microwave radiation processing is aoxidized in comparison diagram, oxygen-containing functional group content
Increase.
Fig. 4 is that the present invention uses embodiment 2 to carbon fiber after carbon fiber microwave radiation processing and resin effect of impregnation figure.Fig. 3 (a)
For the starching T700 fiber without microwave radiation processing, Fig. 3 (b) is that the T700 after using embodiment 2 microwave radiation processing is fine
Dimension.In comparison diagram it can be seen that after Chu Liing carbon fiber diminish with the infiltration angle of resin, represent the leaching of the carbon fiber after microwave radiation processing
Lubricant nature improves.
Embodiment 3
A kind of microwave radiation processing method that carbon fiber surface activity improves, comprises the following steps:
Step 1: eastern beautiful T300 fibre bundle is extracted 48 hours in acetone, to remove the sizing agent of fiber surface.
Step 2: by removing the most ultrasonic 1 hour of the carbon fiber of sizing agent, to remove the acetone reagent of fiber surface.
Step 3: the carbon fiber taken out in deionized water is placed on dried 24 hours under the conditions of 60 DEG C of vacuum drying oven, with
Ensure that carbon fiber surface is dried to obtain non-starching T300 fiber.
Step 4: be placed on non-metal base plate 5 by non-starching T300 fiber, wherein the dielectric constant of substrate is 3.9.Adjust carbon
The angle of fiber, it is ensured that carbon fiber length direction is parallel with the long limit of rectangular waveguide, i.e. vertical with microwave electric field direction.
Step 5: carbon fiber is radiated by the continuous wave using solid state microwave generator 1 to produce, and the size of rectangular waveguide 3 is 90
× 45 × 165mm, the antenna for radiating microwave horn mouth base length of side is 165mm, and electromagnetic horn height is 240mm.Microwave radiation
Power is 100W, and microwave frequency is 2400MHz, and radiated time is 30s.I.e. obtain surface activity after microwave radiation processing to improve
Non-starching carbon fiber.
Embodiment 4
A kind of microwave radiation processing method that carbon fiber surface activity improves, comprises the following steps:
Step 1: by eastern beautiful T700 fibre bundle deionized water ultrasonic 1 hour, to remove the impurity of fiber surface.
Step 2: dried 24 hours under the conditions of the carbon fiber of taking-up is placed on 60 DEG C of vacuum drying oven in deionized water, to protect
Card carbon fiber surface is dried.
Step 3: be placed on non-metal base plate by starching T700 fiber, wherein the dielectric constant of substrate is 3.9.Adjust carbon fiber
Angle, it is ensured that carbon fiber length direction is parallel with the long limit of microwave transmission system rectangular waveguide, i.e. vertical with microwave electric field direction.
Step 4: carbon fiber is radiated by the pulse electromagnetic wave using microwave magnetron generator to produce, and determines microwave transmission system
The size of rectangular waveguide is 90 × 45 × 75mm, and the antenna for radiating microwave horn mouth base length of side is 150mm, electromagnetic horn height
For 100mm.Microwave irradiation power is 120W, and microwave frequency is 2500MHz, and radiated time is 60s.After microwave radiation processing
I.e. obtain the starching carbon fiber that surface activity improves.
The microwave radiation processing method and apparatus that the carbon fiber surface activity that the present invention provides improves, it is provided that carbon fiber surface activity carries
High high efficiency method, can not only increase fiber surface roughness, changes fiber surface graphite microcrystalline structure, increases fiber surface and lives
Property amount of carbon atom, simultaneously can oxidized fibre surface so that fiber surface oxygen-content active functional group increases, beneficially fiber and tree
Being combined of fat, it is thus achieved that the composite of more excellent boundary strength.
Above content is to combine concrete preferred implementation further description made for the present invention, it is impossible to assert the present invention's
Detailed description of the invention is only limitted to this, without departing from the inventive concept of the premise, is made simple deduction or replace, all should regard
Scope of patent protection is determined by the claims submitted to by belonging to the present invention.
Claims (10)
1. the microwave radiation processing method that a carbon fiber surface activity improves, it is characterised in that including: under air ambient,
Use microwave radiation processing device that carbon fiber is carried out radiation treatment.
The microwave radiation processing method that carbon fiber surface activity the most according to claim 1 improves, it is characterised in that: radiation
During process, carbon fiber length direction is vertical with the microwave electric field direction that microwave radiation processing device sends.
The microwave radiation processing method that carbon fiber surface activity the most according to claim 1 improves, it is characterised in that: microwave
The microwave frequency that radiation processing devices sends is 2450MHz ± 50MHz；Microwave power is 100W～300W, at microwave radiation
The reason time is 30～180s.
The microwave radiation processing method that carbon fiber surface activity the most according to claim 1 improves, it is characterised in that: microwave
Radiation processing devices includes that metal rectangular waveguide, metal rectangular waveguide dimensions meet single mode transport condition, i.e. lowest order mode formula TE10
H mode can transmit, and higher modes are suppressed；Electric field is only perpendicular to the component of rectangular waveguide long side direction, along the long limit of rectangular waveguide
Direction is sinusoidal variations；Carbon fiber length direction is parallel with the long side direction of metal rectangular waveguide.
The microwave radiation processing method that carbon fiber surface activity the most according to claim 4 improves, it is characterised in that: metal
Antenna for radiating microwave is set bottom rectangular waveguide；Antenna for radiating microwave is metal bell-mouth antenna；It it is square bottom bell-mouth antenna；
The S11 parameter of bell-mouth antenna is less than-25dB.
The microwave radiation processing method that carbon fiber surface activity the most according to claim 1 improves, it is characterised in that: described
Carbon fiber be do not remove sizing agent carbon fiber or remove sizing agent carbon fiber.
7. the microwave radiation device that a carbon fiber surface activity improves, it is characterised in that: include that the microwave providing microwave energy is sent out
Raw device (1), microwave transmission cable (2), microwave transmission system (3), microwave transmission antenna (4), substrate (5) and microwave
Radiation shield camera bellows (6)；
The outfan of microwave generator (1) connects microwave transmission system (3), microwave transmission system by microwave transmission cable (2)
System (3) is fixed in microwave radiation shielding camera bellows (6), and the bottom of microwave transmission system (3) is fixed with microwave transmission antenna (4),
The lower section of microwave transmission antenna (4) is provided with the substrate (5) being placed on microwave radiation shielding camera bellows (6) bottom.
The microwave radiation device that a kind of carbon fiber surface activity the most according to claim 7 improves, it is characterised in that: microwave
Generator (1) is solid state microwave generator or microwave magnetron generator, and microwave frequency is 2450MHz ± 50MHz, and microwave is sent out
Raw device radiant power is 100W～300W continuously adjustabe.
The microwave radiation device that a kind of carbon fiber surface activity the most according to claim 7 improves, it is characterised in that: microwave
Transmission system (3) is metal rectangular waveguide, and waveguide dimensions meets single mode transport condition: lowest order mode formula TE10 H mode can pass
Defeated, higher modes are suppressed；Electric field is only perpendicular to the component of rectangular waveguide long side direction, is sine along rectangular waveguide long side direction
Change；Antenna for radiating microwave (4) is metal bell-mouth antenna；It is square bottom bell-mouth antenna, the S11 of bell-mouth antenna
Parameter is less than-25dB.
The microwave radiation device that a kind of carbon fiber surface activity the most according to claim 9 improves, it is characterised in that: carbon
It is nonmetallic materials that fiber is placed on substrate upper substrate；Carbon fiber length direction is parallel with the long side direction of metal rectangular waveguide.
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| CN111393689A (en) * | 2020-05-18 | 2020-07-10 | 东华大学 | CF/PPS composite material with high impact toughness and preparation method thereof |
| CN111410759A (en) * | 2020-05-18 | 2020-07-14 | 东华大学 | CF/PEEK composite material with excellent high-temperature mechanical property and preparation method thereof |
| CN111410758A (en) * | 2020-05-18 | 2020-07-14 | 东华大学 | High-impact interface modified CF/PEEK composite material and preparation method thereof |
| CN112666185A (en) * | 2020-10-27 | 2021-04-16 | 西安交通大学 | Remote crude oil water content measuring device based on microwave transmission method and measuring method thereof |
| CN113307646A (en) * | 2021-06-28 | 2021-08-27 | 湖南兴晟新材料科技有限公司 | High-heat-conductivity and high-purity graphite-based composite material and preparation method thereof |
| CN117362068A (en) * | 2023-10-31 | 2024-01-09 | 昆明理工大学 | Preparation method of spinel-based porous heat-insulating cover plate for aluminum electrolysis |
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| CN111393689A (en) * | 2020-05-18 | 2020-07-10 | 东华大学 | CF/PPS composite material with high impact toughness and preparation method thereof |
| CN111410759A (en) * | 2020-05-18 | 2020-07-14 | 东华大学 | CF/PEEK composite material with excellent high-temperature mechanical property and preparation method thereof |
| CN111410758A (en) * | 2020-05-18 | 2020-07-14 | 东华大学 | High-impact interface modified CF/PEEK composite material and preparation method thereof |
| CN112666185A (en) * | 2020-10-27 | 2021-04-16 | 西安交通大学 | Remote crude oil water content measuring device based on microwave transmission method and measuring method thereof |
| CN113307646A (en) * | 2021-06-28 | 2021-08-27 | 湖南兴晟新材料科技有限公司 | High-heat-conductivity and high-purity graphite-based composite material and preparation method thereof |
| CN117362068A (en) * | 2023-10-31 | 2024-01-09 | 昆明理工大学 | Preparation method of spinel-based porous heat-insulating cover plate for aluminum electrolysis |
| CN117362068B (en) * | 2023-10-31 | 2024-05-03 | 昆明理工大学 | Preparation method of spinel-based porous heat-insulating cover plate for aluminum electrolysis |
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