CN110105077A - A kind of technique using rim charge production carbon carbon composite board - Google Patents
A kind of technique using rim charge production carbon carbon composite board Download PDFInfo
- Publication number
- CN110105077A CN110105077A CN201910284823.4A CN201910284823A CN110105077A CN 110105077 A CN110105077 A CN 110105077A CN 201910284823 A CN201910284823 A CN 201910284823A CN 110105077 A CN110105077 A CN 110105077A
- Authority
- CN
- China
- Prior art keywords
- carbon
- carbon fiber
- temperature
- composite board
- rim charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/622—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/62204—Forming processes; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products using waste materials or refuse
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/71—Ceramic products containing macroscopic reinforcing agents
- C04B35/78—Ceramic products containing macroscopic reinforcing agents containing non-metallic materials
- C04B35/80—Fibres, filaments, whiskers, platelets, or the like
- C04B35/83—Carbon fibres in a carbon matrix
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/614—Gas infiltration of green bodies or pre-forms
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/60—Aspects relating to the preparation, properties or mechanical treatment of green bodies or pre-forms
- C04B2235/616—Liquid infiltration of green bodies or pre-forms
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/65—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes
- C04B2235/656—Aspects relating to heat treatments of ceramic bodies such as green ceramics or pre-sintered ceramics, e.g. burning, sintering or melting processes characterised by specific heating conditions during heat treatment
- C04B2235/6567—Treatment time
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Composite Materials (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a kind of techniques using rim charge production carbon carbon composite board, using chopped carbon fiber or carbon fiber 3D braiding precast body as skeleton, soft, the grinding of hard carbon fiber felt rim charge powder is packing material, the carbon/carbon compound material plate as made from molding/vacuum filtration, carbonization, density and high-temperature technology.The present invention is enhancing skeleton with the big tow of chopped carbon fiber or carbon fiber braiding precast body, and it is packing material that powder, which is made, in carbon fiber edge recycling, is dispersed in enhancing skeleton, improves the uniformity of composite board, increase intensity；The porosity of framework material is reduced, the subsequent density period can be reduced, reduces production cost.
Description
Technical field
The present invention relates to carbon carbon composite board preparation fields, specifically, being related specifically to a kind of utilization rim charge production carbon
The technique of carbon composite board.
Background technique
As carbon fibre composite is using more and more extensive, waste is also more and more, the recycling benefit of waste
With the new problem faced at present as industrial circle and society.
Usually, the recycling to carbon fiber waste material there is several methods that, one is burn carbon fiber waste material, utilize its burning
The thermal energy of generation, but this process can discharge a large amount of toxic gases, and the grey branch after simultaneously buried burning causes two to soil
Secondary pollution.Another kind be by carbon fiber waste material or carbon fibre composite waste material by chopping, the methods of pulverize, be made particle,
Fine powder etc. is used, the material through handling in this way, is generally only to be used as building filler, paveio(u)r, cement raw material etc..
Both above-mentioned method had both caused the significant wastage of material, more cause the serious pollution of environment.
To solve the above-mentioned problems, patent CN105016325 gives a kind of chopped Carbon fiber of charcoal felt waste material processing and manufacturing
The method of dimension and charcoal granulate mixture, products obtained therefrom do not wind and do not have unity balling, be evenly distributed.The invention mainly will
Waste material is processed into chopped carbon fiber, is added in synthetic material as reinforcing material, but carbon fiber in removal process again
It is chopped, intensity is seriously destroyed.
Patent CN101062595 discloses a kind of waste scrap in carbon fiber/glass fiber composite material production process
Application and its product, mainly leftover pieces are recycled, novel carbon fiber/glass fibers of machine direction random dispersion are made
Tie up composite sheet.But the invention is limited only to the recycling and reusing to the carbon fiber in the composite material without carbonization high temperature.
Summary of the invention
It is an object of the invention to aiming at the shortcomings in the prior art, provide a kind of utilization rim charge production carbon carbon composite board
Technique, relate generally to soft, hard carbon fiber felt the recycling for cutting rim charge.Production technology is easy, while realizing soft, hard
The recycling and reusing of carbon fiber felt rim charge.
Technical problem solved by the invention can be realized using following technical scheme:
A kind of technique using rim charge production carbon carbon composite board, includes the following steps:
1) soft carbon fiber felt is chopped into fritter, and is ground into carbon fiber powder, fineness is 50~500 mesh；
2) carbon fiber felt of hard is ground into particle, and is ground into carbon fiber powder, fineness is 50~500 mesh；
3) the big tow of chopped carbon fiber that the carbon fiber powder for producing step 1) and step 2) and length are 30~150mm
It is added in binder and ethyl alcohol, is sufficiently mixed by Vibratory Mixing, so that slurry is uniformly dispersed, slurry is then injected into mould
In tool simultaneously, vacuum filtration drying is carried out；
4) it is molded, concrete technology flow process is as follows:
A) slurry that step 3) processing is completed is put into togerther platen-press together with mold and carries out hot-press solidifying；
B) press temperature is risen to 115~130 DEG C from room temperature, heating power is 60~90kw, and at 130~140 DEG C
At a temperature of keep the temperature 1~3h；
C) add 0.5~1MPa of first pressing；145~155 DEG C are warming up to, heating power is 60~90kw, and at 155~160 DEG C
At a temperature of keep the temperature 0.5~1h；
D) be continuously heating to 165~170 DEG C, heating power is 60~90kw, and 170~180 DEG C at a temperature of keep the temperature 1
~1.5h；
E) it is forced into 5~10MPa stage by stage, powers off subsequent continuation of insurance and release after 1~3h is pressed to demould；
5) carbonization treatment is carried out to the carbon carbon composite board after demoulding, the temperature of the carbonization is 800~1200 DEG C, carbonization
Time be 8~10h；
6) density processing is carried out to the carbon carbon composite board after carbonization, density is using liquid phase impregnation and vapor deposition work
Skill combines.
7) high-temperature process is carried out to the carbon carbon composite board after density, the high-temperature temperature is 1800~2200 DEG C, high temperature
Time is 8~10h.
Further, the step 3) has following replacement technique:
The carbon fiber powder that step 1) and step 2) are produced is added in binder and ethyl alcohol, after being sufficiently mixed uniformly,
The injection of gained slurry is placed in the mold of carbon fiber braiding plate precast body, then carries out vacuum filtration drying.
Further, the binder includes epoxy resin, furane resins, phenolic resin and pitch.
Further, the density of the carbon fiber braiding plate precast body is 0.3~0.7g/m3。
Compared with prior art, the beneficial effects of the present invention are:
The present invention relates to one kind using chopped carbon fiber or carbon fiber 3D braiding precast body as skeleton, soft, hard carbon fiber felt
The powder of rim charge grinding is packing material, and carbon/carbon as made from molding/vacuum filtration, carbonization, density and high-temperature technology is compound
Material plate.
Production technology provided by the invention can be easy to be quick, at low cost, effectively realizes carbon/carbon compound material production process
The recycling of middle rim charge can make outstanding contributions for carbon fibre composite application field.
Specific embodiment
To be easy to understand the technical means, the creative features, the aims and the efficiencies achieved by the present invention, below with reference to
Specific embodiment, the present invention is further explained.
Embodiment 1
A kind of technique using rim charge production carbon carbon composite board, includes the following steps:
1) soft carbon fiber felt is chopped into fritter, and is ground into carbon fiber powder, fineness is 50~500 mesh；
2) carbon fiber felt of hard is ground into particle, and is ground into carbon fiber powder, fineness is 50~500 mesh；
3) the big tow of chopped carbon fiber that the carbon fiber powder for producing step 1) and step 2) and length are 30~150mm
It is added in binder and ethyl alcohol, is sufficiently mixed by Vibratory Mixing, so that slurry is uniformly dispersed, slurry is then injected into mould
In tool simultaneously, vacuum filtration drying is carried out；
4) it is molded, concrete technology flow process is as follows:
A) slurry that step 3) processing is completed is put into togerther platen-press together with mold and carries out hot-press solidifying；
B) press temperature is risen to 115~130 DEG C from room temperature, heating power is 60~90kw, and at 130~140 DEG C
At a temperature of keep the temperature 1~3h；
C) add 0.5~1MPa of first pressing；145~155 DEG C are warming up to, heating power is 60~90kw, and at 155~160 DEG C
At a temperature of keep the temperature 0.5~1h；
D) be continuously heating to 165~170 DEG C, heating power is 60~90kw, and 170~180 DEG C at a temperature of keep the temperature 1
~1.5h；
E) it is forced into 5~10MPa stage by stage, powers off subsequent continuation of insurance and release after 1~3h is pressed to demould；
5) carbonization treatment is carried out to the carbon carbon composite board after demoulding, the temperature of the carbonization is 800~1200 DEG C, carbonization
Time be 8~10h；
6) density processing is carried out to the carbon carbon composite board after carbonization, density is using liquid phase impregnation and vapor deposition work
Skill combines.
7) high-temperature process is carried out to the carbon carbon composite board after density, the high-temperature temperature is 1800~2200 DEG C, high temperature
Time is 8~10h.
Embodiment 2
A kind of technique using rim charge production carbon carbon composite board, includes the following steps:
1) soft carbon fiber felt is chopped into fritter, and is ground into carbon fiber powder, fineness is 50~500 mesh；
2) carbon fiber felt of hard is ground into particle, and is ground into carbon fiber powder, fineness is 50~500 mesh；
3) carbon fiber powder that step 1) and step 2) are produced is added in binder and ethyl alcohol, is sufficiently mixed uniformly
Afterwards, the injection of gained slurry is placed in the mold of carbon fiber braiding plate precast body (the carbon fiber braiding plate precast body
Density is 0.3~0.7g/m3), then carry out vacuum filtration drying.
4) it is molded, concrete technology flow process is as follows:
A) slurry that step 3) processing is completed is put into togerther platen-press together with mold and carries out hot-press solidifying；
B) press temperature is risen to 115~130 DEG C from room temperature, heating power is 60~90kw, and at 130~140 DEG C
At a temperature of keep the temperature 1~3h；
C) add 0.5~1MPa of first pressing；145~155 DEG C are warming up to, heating power is 60~90kw, and at 155~160 DEG C
At a temperature of keep the temperature 0.5~1h；
D) be continuously heating to 165~170 DEG C, heating power is 60~90kw, and 170~180 DEG C at a temperature of keep the temperature 1
~1.5h；
E) it is forced into 5~10MPa stage by stage, powers off subsequent continuation of insurance and release after 1~3h is pressed to demould；
5) carbonization treatment is carried out to the carbon carbon composite board after demoulding, the temperature of the carbonization is 800~1200 DEG C, carbonization
Time be 8~10h；
6) density processing is carried out to the carbon carbon composite board after carbonization, density is using liquid phase impregnation and vapor deposition work
Skill combines.
7) high-temperature process is carried out to the carbon carbon composite board after density, the high-temperature temperature is 1800~2200 DEG C, high temperature
Time is 8~10h.
In the above-described embodiments, the binder includes epoxy resin, furane resins, phenolic resin and pitch.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (4)
1. a kind of technique using rim charge production carbon carbon composite board, which comprises the steps of:
1) soft carbon fiber felt is chopped into fritter, and is ground into carbon fiber powder, fineness is 50~500 mesh；
2) carbon fiber felt of hard is ground into particle, and is ground into carbon fiber powder, fineness is 50~500 mesh；
3) the big tow of chopped carbon fiber that the carbon fiber powder for producing step 1) and step 2) and length are 30~150mm is added
It into binder and ethyl alcohol, is sufficiently mixed by Vibratory Mixing, so that slurry is uniformly dispersed, then slurry is injected into mold
And carry out vacuum filtration drying；
4) it is molded, concrete technology flow process is as follows:
A) slurry that step 3) processing is completed is put into togerther platen-press together with mold and carries out hot-press solidifying；
B) press temperature is risen to 115~130 DEG C from room temperature, heating power is 60~90kw, and in 130~140 DEG C of temperature
Degree is lower to keep the temperature 1~3h；
C) add 0.5~1MPa of first pressing；145~155 DEG C are warming up to, heating power is 60~90kw, and in 155~160 DEG C of temperature
Degree is lower to keep the temperature 0.5~1h；
D) be continuously heating to 165~170 DEG C, heating power is 60~90kw, and 170~180 DEG C at a temperature of heat preservation 1~
1.5h；
E) it is forced into 5~10MPa stage by stage, powers off subsequent continuation of insurance and release after 1~3h is pressed to demould；
5) carbonization treatment is carried out to the carbon carbon composite board after demoulding, the temperature of the carbonization is 800~1200 DEG C, carbonization when
Between be 8~10h；
6) density processing is carried out to the carbon carbon composite board after carbonization, density uses liquid phase impregnation and gas-phase deposition phase
In conjunction with.
7) high-temperature process is carried out to the carbon carbon composite board after density, the high-temperature temperature is 1800~2200 DEG C, high-temperature time
For 8~10h.
2. the technique according to claim 1 using rim charge production carbon carbon composite board, which is characterized in that the step 3)
With following replacement technique:
The carbon fiber powder that step 1) and step 2) are produced is added in binder and ethyl alcohol, after being sufficiently mixed uniformly, by institute
It obtains slurry injection to be placed in the mold of carbon fiber braiding plate precast body, then carries out vacuum filtration drying.
3. the technique according to claim 1 or 2 using rim charge production carbon carbon composite board, which is characterized in that described viscous
Tying agent includes epoxy resin, furane resins, phenolic resin and pitch.
4. the technique according to claim 1 using rim charge production carbon carbon composite board, which is characterized in that the carbon fiber
The density for weaving plate precast body is 0.3~0.7g/m3。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284823.4A CN110105077A (en) | 2019-04-10 | 2019-04-10 | A kind of technique using rim charge production carbon carbon composite board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910284823.4A CN110105077A (en) | 2019-04-10 | 2019-04-10 | A kind of technique using rim charge production carbon carbon composite board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110105077A true CN110105077A (en) | 2019-08-09 |
Family
ID=67484065
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910284823.4A Pending CN110105077A (en) | 2019-04-10 | 2019-04-10 | A kind of technique using rim charge production carbon carbon composite board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110105077A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112571818A (en) * | 2020-12-01 | 2021-03-30 | 西安美兰德新材料有限责任公司 | Composite process for producing carbon-carbon plate by using carbon powder waste |
| CN112592196A (en) * | 2020-12-30 | 2021-04-02 | 青岛高泰新材料有限公司 | Method for manufacturing multilayer high-temperature carbon charging frame |
| CN113072388A (en) * | 2020-01-04 | 2021-07-06 | 陕西美兰德炭素有限责任公司 | Process method for recycling carbon-carbon composite material waste |
| CN114276158A (en) * | 2021-12-29 | 2022-04-05 | 湖南金博碳素股份有限公司 | Preparation method of short carbon fiber composite material |
| CN115160007A (en) * | 2022-06-15 | 2022-10-11 | 浙江德鸿碳纤维复合材料有限公司 | Carbon-carbon composite structure and preparation method thereof |
| CN116655397A (en) * | 2023-07-28 | 2023-08-29 | 浙江德鸿碳纤维复合材料有限公司 | Carbon/carbon composite material based on short carbon fibers and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108395268A (en) * | 2018-04-18 | 2018-08-14 | 保定顺天新材料股份有限公司 | The process that carbon carbon composite recycles |
| CN109384470A (en) * | 2018-11-08 | 2019-02-26 | 中南大学 | A kind of fast preparation method of C/C composite material |
| CN109385523A (en) * | 2017-08-11 | 2019-02-26 | 肯纳金属公司 | Grade powder and sintered hard carbide composition |
-
2019
- 2019-04-10 CN CN201910284823.4A patent/CN110105077A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109385523A (en) * | 2017-08-11 | 2019-02-26 | 肯纳金属公司 | Grade powder and sintered hard carbide composition |
| CN108395268A (en) * | 2018-04-18 | 2018-08-14 | 保定顺天新材料股份有限公司 | The process that carbon carbon composite recycles |
| CN109384470A (en) * | 2018-11-08 | 2019-02-26 | 中南大学 | A kind of fast preparation method of C/C composite material |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072388A (en) * | 2020-01-04 | 2021-07-06 | 陕西美兰德炭素有限责任公司 | Process method for recycling carbon-carbon composite material waste |
| CN112571818A (en) * | 2020-12-01 | 2021-03-30 | 西安美兰德新材料有限责任公司 | Composite process for producing carbon-carbon plate by using carbon powder waste |
| CN112592196A (en) * | 2020-12-30 | 2021-04-02 | 青岛高泰新材料有限公司 | Method for manufacturing multilayer high-temperature carbon charging frame |
| CN112592196B (en) * | 2020-12-30 | 2022-12-20 | 青岛高泰新材料有限公司 | Method for manufacturing multilayer high-temperature carbon charging frame |
| CN114276158A (en) * | 2021-12-29 | 2022-04-05 | 湖南金博碳素股份有限公司 | Preparation method of short carbon fiber composite material |
| CN115160007A (en) * | 2022-06-15 | 2022-10-11 | 浙江德鸿碳纤维复合材料有限公司 | Carbon-carbon composite structure and preparation method thereof |
| CN116655397A (en) * | 2023-07-28 | 2023-08-29 | 浙江德鸿碳纤维复合材料有限公司 | Carbon/carbon composite material based on short carbon fibers and preparation method thereof |
| CN116655397B (en) * | 2023-07-28 | 2023-10-27 | 浙江德鸿碳纤维复合材料有限公司 | Carbon/carbon composite material based on short carbon fibers and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110105077A (en) | A kind of technique using rim charge production carbon carbon composite board | |
| CN103880464B (en) | Preparation process of concrete porous brick prepared from tubular pile residual slurry and waste incineration slag | |
| CN102729311B (en) | Production method of eucalyptus bark shaving boards | |
| CN108585781A (en) | It is suitble to the preparation method of the ceramic water-permeable brick of low temperature fast firing | |
| CN109809829A (en) | Carbon/carbon thermal insulation material method is prepared using carbon fiber preform waste material | |
| CN106365667A (en) | Preparation method of low-density integrated heat preservation felt for high-temperature furnace | |
| CN104446138A (en) | Method for preparing epoxy resin based artificial granite from GFRP waste | |
| CN106675073A (en) | Crushed wood aggregate/spinning waste/plastic waste compound molded product and manufacturing method thereof | |
| CN104386948A (en) | Fast preparation method of graphite composite material with high thermal conductivity | |
| CN106906691B (en) | Light biomass material and preparation method thereof | |
| CN114276158A (en) | Preparation method of short carbon fiber composite material | |
| CN108395268A (en) | The process that carbon carbon composite recycles | |
| CN108821645A (en) | A method of compound resin well cover is prepared using discarded circuit board non-metal powder collaboration polyester resin | |
| CN102614972A (en) | Methods for recovery treatment reutilization of prepreg offcuts | |
| KR100736745B1 (en) | Method of manufacturing unusable glass fiber to construction panel | |
| CN106277971A (en) | A kind of hot-forming alkaline residue building waste sheet material | |
| CN112041285A (en) | Method for producing building aggregates from fly ash and aggregates obtained by this method | |
| CN100528793C (en) | Catalytic gluing carbide slag brick | |
| CN107936603A (en) | A kind of method of waste plastic production 3D printing wire rod | |
| CN106738187A (en) | Wood particulate/weaving dead meal composite coining product and its manufacture method | |
| CN114014618A (en) | Baking-free brick and preparation method thereof | |
| CN112174636A (en) | Preparation method of high-strength environment-friendly brick taking construction waste as raw material | |
| CN112571818A (en) | Composite process for producing carbon-carbon plate by using carbon powder waste | |
| CN102686667B (en) | Waterproof and fireproof zero-carbon ecological board made from powders of waste electronic circuit board and manufacturing process thereof | |
| CN103144222A (en) | Method for preparing composite product by using waste lead-containing glass and waste plastics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190809 |