CN111185462B - Recycling method of carbon fiber reinforced epoxy resin matrix composite material - Google Patents
Recycling method of carbon fiber reinforced epoxy resin matrix composite material Download PDFInfo
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- CN111185462B CN111185462B CN202010047956.2A CN202010047956A CN111185462B CN 111185462 B CN111185462 B CN 111185462B CN 202010047956 A CN202010047956 A CN 202010047956A CN 111185462 B CN111185462 B CN 111185462B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
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Abstract
The invention relates to a recycling method of a carbon fiber reinforced epoxy resin matrix composite material, which comprises the steps of waste pretreatment, waste sorting, anaerobic carbonization, carbonized material treatment, high-temperature activation, activated material treatment and the like. The recycling method of the carbon fiber reinforced epoxy resin matrix composite material has low requirement on treatment equipment, high recycling rate and high separation degree of recycled materials, and is convenient for recycling waste materials.
Description
Technical Field
The invention belongs to the field of composite materials, relates to a recycling method of a carbon fiber reinforced epoxy resin matrix composite material, and particularly relates to a method for recycling processing leftover materials and product waste materials of the carbon fiber reinforced epoxy resin matrix composite material and realizing full recycling of carbon fibers and a matrix.
Background
The carbon fiber is a new material with excellent mechanical property, the specific gravity of the carbon fiber is less than 1/4 of steel, but the tensile strength of the carbon fiber is generally more than 3500Mpa, which is 7-9 times of that of the steel, and the tensile elastic modulus of the carbon fiber is 23000-43000 Mpa which is also higher than that of the steel. The resin-based composite material using the carbon fiber as the reinforcing framework is widely applied to the aerospace field, the sports field, the industrial fields of automobiles, wind power, electronic appliances, medical appliances and the like by virtue of excellent performances of corrosion resistance, fatigue resistance, high specific strength, high specific modulus, good designability and the like.
Due to the wide application of carbon fiber reinforced resin matrix composite products, the amount of waste products of the carbon fiber resin matrix composite and leftover materials produced and processed is increasing day by day. According to statistics, the carbon fiber composite material products can reach 5 ten thousand tons in the world in 2020, wherein the carbon fiber waste is more than 2.5 ten thousand tons. Huge composite waste not only causes huge waste of material resources, but also brings adverse effects to living environment. Therefore, the problem of recycling the waste of the carbon fiber resin-based composite material, disposing and reusing the waste and prolonging the use value of the carbon fiber resin-based composite material has become a hot point of research in recent years.
At present, the treatment method of the carbon fiber composite material waste can be divided into physical recovery, energy recovery and chemical recovery. Because of the defects of low utilization value, environmental pollution and the like of the former two methods, the existing recovery treatment method of the materials is mainly a chemical recovery method. At present, a plurality of chemical recovery methods are disclosed in China, and carbon fibers are separated from a composite material by using a supercritical solution dissolving method, inorganic strong acid decomposition, high-temperature cracking and other methods, so that the carbon fibers are only reused. Such as CN03132542.4, which is a product of Hardgman, the carbon fiber is obtained by decomposing and recycling the epoxy resin with strong nitric acid. The technical scheme includes that CN 102391543A of national institute of technology and engineering institute of technology utilizes acid liquor to reflux, organic solution is dissolved in oxidant, acetone is dissolved, and the like to obtain carbon fiber, and CN 102181071A utilizes supercritical CO2 composite liquid prepared by strong acid to dissolve and obtain carbon fiber. However, the method only recovers carbon fibers from epoxy resin and other composite materials, the liquid for dissolving the resin is not easy to separate, new pollution or new problems are caused, and meanwhile, the strong acid solution has the characteristics of high requirements on equipment, high requirements on operation safety coefficient and the like, so that the popularization of the method is influenced. Beijing glass fiber reinforced plastic institute composite Co., Ltd. [ CN 104513406A ] adopts a fluidized bed process to facilitate the waste carbon fiber reinforced resin composite material to be placed in hot air to realize resin oxidative decomposition, thereby obtaining carbon fibers. [ CN 103665430A ] of Shanghai transportation university puts waste carbon fiber composite material into nitrogen atmosphere with oxygen content of 3-20 vol% to burn, and utilizes micro-oxygen pyrolysis method to oxidize and eliminate resin to obtain carbon fiber. China CN 103665427A of Shanghai university of transportation puts the waste carbon fiber composite material into a furnace chamber in an oxygen-free environment, and the temperature reaches 350-900 ℃ to generate a thermal cracking reaction to eliminate resin carbon to obtain carbon fiber. The process is simple to operate, but the surface of the recycled carbon fiber is easy to form carbon. The carbonized carbon fibers will seriously affect the recycling performance of the recycled carbon fibers after subsequent cutting or crushing processing
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for recycling a carbon fiber reinforced resin matrix composite material and realizing the reutilization of both carbon fibers and a resin matrix, thereby really realizing the purposes of resource saving and environmental protection. In order to achieve the purpose, the recycling method designed by the invention adopts the following technical scheme:
(1) pre-treating, namely cutting waste materials or leftover materials of the carbon fiber reinforced epoxy resin matrix composite material into sections, and soaking and cleaning; carrying out primary surface cleaning work;
(2) classifying the waste materials, namely classifying the cleaned waste materials or leftover materials according to the fiber form, putting the waste materials or leftover materials into a container II, and putting the waste materials or leftover materials into a carbonization furnace;
(3) anaerobic carbonization treatment, namely vacuumizing a carbonization furnace to be less than or equal to 4000Pa, filling argon to normal pressure to be used as protective gas, and then executing a heating process to finish an anaerobic carbonization procedure;
(4) carbonizing material treatment, namely manually classifying and cleaning the waste materials or leftover materials subjected to anaerobic carbonization, classifying the waste materials or leftover materials into carbon fibers and resin carbon, collecting the separated resin carbon, filling the separated resin carbon into the bottom layer of a container III, and collecting the separated carbon fibers to be filled into the upper part of the container III;
(5) high-temperature activation treatment, namely putting the container III filled with the carbon fibers and the resin carbon into a high-temperature treatment furnace, vacuumizing the high-temperature treatment furnace to be less than or equal to 4000Pa, then filling argon to normal pressure to be used as protective gas, and finally executing a heating process of the high-temperature treatment to finish the high-temperature activation process;
(6) the method comprises the following steps of (1) activating material treatment, namely separating and cleaning the activated material subjected to high-temperature activation treatment, placing the activated material in a stirring container containing pure water, further separating carbon fibers and resin carbon particles by stirring, and finally fishing up the carbon fibers by using a tool with a brush to realize complete separation of the carbon fibers and the resin carbon particles so as to obtain relatively complete carbon fiber yarns; the carbon fiber yarns can be directly used as chopped carbon fiber yarns and used as raw materials of short fiber carbon/carbon heat-preservation felts;
(7) the resin carbon that will wash the completion filters out from the pure water, dries, utilizes screen cloth instrument according to the categorised collection of particle size, and this type of resin carbon all has higher specific surface area after high temperature activation handles, can regard as adsorption material active carbon particle to use.
Further, in the step (1), the cut waste materials or leftover materials are filled in the container I, the container I is soaked and washed by purified water, and then the container I is washed by fresh purified water, so that the container I needs to be soaked and washed by flowing water for not less than 2 hours to achieve the washing effect.
Further, the fibers in the step (2) are classified according to fiber forms, and the main forms of the fibers include plain carbon cloth fibers, twill carbon cloth fibers, non-woven carbon cloth fibers and filament fibers, the fiber directions of the fiber wastes in the above forms are consistent as much as possible when the fiber wastes are placed, and the fibers in the same fiber form are treated simultaneously.
Further, the process temperature of the anaerobic carbonization treatment in the step (3) is 600-900 ℃, and the heating rate of the carbonization furnace is 50-100 ℃/h.
Further, the process temperature of the high-temperature activation treatment in the step (5) is not lower than 2000 ℃, and the heat preservation is not lower than 4 hours at 2000 ℃.
Further, the stirring speed of the stirring container in the step (6) is not lower than 30 r/min, and the stirring time is not lower than 5 min.
Further, the temperature of the drying process in the step (7) is 100-350 ℃.
Furthermore, the container I is composed of a stainless steel groove and a charging frame, the stainless steel groove is provided with a water inlet interface and a water outlet interface, the charging frame is formed by welding stainless steel meshes, and the charging frame is provided with a lifting lug.
Furthermore, container II is the cylindric container of graphite or carbon-carbon material, is provided with foraminiferous bung, and the container limit is equipped with the lug hole.
Further, container III is graphite or carbon material, is the cylindric, and the top is provided with foraminiferous bung, utilizes graphite cake or carbon material processing and equipment to form, and two spaces about it is divided into are separated to wherein being equipped with the graphite cake and cut off, are equipped with the hoist and mount breach on the graphite cake cut off, be equipped with the multirow perforation on the graphite cake cut off.
Compared with the prior art, the method for recycling the carbon fiber reinforced epoxy resin matrix composite material has the advantages that (1) the requirement on production equipment is not high, and a high-temperature treatment container using graphite or a carbon/carbon composite material is conventional equipment of manufacturers.
(2) The separation degree of the epoxy resin and the carbon fiber is high, the epoxy resin and the carbon fiber can be classified and utilized, and the waste materials can be recycled and reused;
(3) the damage degree of the recycled carbon fiber is small, and the recycling value is high;
(4) the innovative introduction of the high-temperature activation process can further promote the separation of the carbon fiber and the resin carbon and effectively improve the utilization value of the resin carbon;
(5) the method has simple process, is easy to realize industrialization and is convenient to popularize and utilize.
Drawings
FIG. 1 is a schematic view of the structure of a container I
FIG. 2 is a schematic structural view of a container II
FIG. 3 is a schematic structural view of a graphite barrel cover
FIG. 4 is a schematic view of the structure of a container III
Description of the reference numerals
1 stainless steel groove, 2 charging frames, 11 water inlet interfaces, 12 water outlet interfaces, 21 lifting lugs, 31 open holes, 32 lifting lug holes and 41 graphite plate partitions
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. The technical solutions in the embodiments of the present invention are clearly and completely described, and the described embodiments are only some embodiments, but not all embodiments, of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The first embodiment of the recycling method of the carbon fiber reinforced epoxy resin matrix composite material comprises the following steps:
the method comprises the following steps of (1) preprocessing, cutting waste materials, leftover materials and the like of the carbon fiber reinforced epoxy resin matrix composite material into sections according to specified specifications of 10mm by 50mm, putting the sections into a special container I, soaking the sections by using purified water, and then washing the sections by using fresh purified water, wherein in order to achieve a washing effect, the sections need to be soaked and washed by using flowing water for not less than 2 hours;
classifying the wastes, namely classifying and separately placing the wastes or leftover materials with the cleaned surfaces in a specific container II according to fiber forms, wherein the main forms of the wastes or leftover materials comprise plain carbon cloth fibers, twill carbon cloth fibers, non-woven carbon cloth fibers and filament fibers, the fiber directions of the fiber wastes in the above forms are consistent as much as possible when the wastes are placed, and the fibers in the same fiber form are simultaneously treated and placed in a carbonization furnace;
and (3) performing anaerobic carbonization treatment, performing carbonization operation, firstly vacuumizing a carbonization furnace to less than or equal to 4000Pa, filling argon to normal pressure to be used as protective gas, and then executing a temperature rise process: raising the temperature to 600 ℃ at the room temperature, wherein the heating rate is 50 ℃/h, preserving the heat at 600 ℃ for 4h, and then naturally cooling to finish the oxygen-free carbonization process;
step (4), carbonizing material treatment, namely manually separating and cleaning the carbonized material after carbonization to generally separate the carbonized material into carbon fiber and resin carbon, filling the separated resin carbon into the bottom layer of a container III, and filling the separated carbon fiber into the upper part of the container III;
and (5) high-temperature activation treatment, namely putting the carbon fibers and the resin carbon container III into a high-temperature treatment furnace for high-temperature treatment: firstly, vacuumizing to be less than or equal to 4000Pa, then introducing argon to normal pressure as protective gas, executing a heating process of high-temperature treatment, heating the room temperature to 2000 ℃, preserving the temperature at 2000 ℃ for 4 hours, and then naturally cooling to finish high-temperature activation treatment;
and (6) activating material treatment, namely performing secondary cleaning and separation on the activated material subjected to high-temperature treatment, placing the activated material in a stirring container containing pure water, regulating the stirring speed of the stirring container to 30 revolutions per minute, stirring for 8 minutes, separating carbon fibers from resin carbon particles by stirring, and finally fishing up the carbon fibers by using a tool similar to a hairbrush to realize complete separation of the carbon fibers from the resin carbon, so that relatively complete carbon fiber yarns are obtained. The carbon fiber yarns can be directly used as chopped carbon fiber yarns and used as raw materials of short fiber carbon/carbon heat-preservation felts;
and (7) filtering the cleaned resin carbon from pure water, drying, wherein the temperature of the drying process is 100 ℃, and then classifying and collecting the resin carbon according to the particle size by using a screen tool, the resin carbon has a higher specific surface area after high-temperature activation treatment and can be used as an adsorption material, namely activated carbon particles, and the resin carbon has a higher specific surface area after high-temperature activation treatment and can be used as an adsorption material, namely activated carbon particles.
The container I used in this embodiment is composed of a stainless steel tank 1 and a charging frame 2, as shown in FIG. 1, the upper end of the stainless steel tank 1 is provided with a water inlet 11, the bottom end is provided with a water outlet 12, the charging frame 2 is formed by welding stainless steel meshes, and the charging frame 2 is provided with a lifting lug 21. And (3) loading the cut materials into a loading frame, then hoisting the loading frame in a stainless steel groove, respectively connecting a water inlet and a water outlet of the stainless steel groove with a water pipe and a circulating pump, circularly supplying water to the stainless steel groove, soaking and cleaning the materials, and hoisting the loading frame out after cleaning.
The structure of the container II used in the embodiment is as shown in fig. 2 and fig. 3, the container II is a charging bucket made of graphite, the upper part of the charging bucket is provided with a lug hole 32, the top end of the charging bucket is a graphite bucket cover, and the bucket cover is provided with a plurality of openings 31.
The structure of the container iii used in this embodiment is as shown in fig. 4, the container iii is a charging barrel made of graphite, a graphite plate partition 41 is arranged in the middle of the container iii, the container iii is divided into an upper layer and a lower layer, the graphite plate partition 41 is provided with a plurality of through holes and a hoisting gap, and a graphite barrel cover identical to the container ii is arranged at the top end of the graphite plate partition.
The process method can realize the recycling of the epoxy resin-based carbon fiber composite material, utilizes a high-temperature pentoxide carbonization mode, efficiently separates two substances of resin and carbon fiber, both the two substances have utilization values, the carbon fiber can be used as a raw material of a chopped fiber carbon thermal insulation material, and the resin carbon can be used as an activated carbon product. The recycling of the epoxy resin-based composite material is realized by the process method.
Example 2
The second embodiment of the recycling method of the carbon fiber reinforced epoxy resin matrix composite material comprises the following steps:
the method comprises the following steps of (1) preprocessing, cutting waste materials, leftover materials and the like of the carbon fiber reinforced epoxy resin matrix composite material into sections according to specified specifications of 10mm by 50mm, putting the sections into a special container I, soaking the sections by using purified water, and then washing the sections by using fresh purified water, wherein in order to achieve a washing effect, the sections need to be soaked and washed by using flowing water for not less than 2 hours;
classifying the wastes, namely classifying and separately placing the wastes or leftover materials with the cleaned surfaces in a specific container II according to fiber forms, wherein the main forms of the wastes or leftover materials comprise plain carbon cloth fibers, twill carbon cloth fibers, non-woven carbon cloth fibers and filament fibers, the fiber directions of the fiber wastes in the above forms are consistent as much as possible when the wastes are placed, and the fibers in the same fiber form are simultaneously treated and placed in a carbonization furnace;
and (3) performing anaerobic carbonization treatment, performing carbonization operation, firstly vacuumizing a carbonization furnace to less than or equal to 4000Pa, filling argon to normal pressure to be used as protective gas, and then executing a temperature rise process: raising the temperature to 750 ℃ at the room temperature, wherein the heating rate is 80 ℃/h, preserving the heat at 750 +/-50 ℃ for 4h, and then naturally cooling to finish the oxygen-free carbonization process;
step (4), carbonizing material treatment, namely manually separating and cleaning the carbonized material after carbonization to generally separate the carbonized material into carbon fiber and resin carbon, filling the separated resin carbon into the bottom layer of a container III, and filling the separated carbon fiber into the upper part of the container III;
and (5) high-temperature activation treatment, namely putting the carbon fibers and the resin carbon container III into a high-temperature treatment furnace for high-temperature treatment: firstly, vacuumizing to be less than or equal to 4000Pa, then introducing argon to normal pressure as protective gas, executing a heating process of high-temperature treatment, heating the room temperature to 2000 ℃, preserving the temperature at 2000 ℃ for 4 hours, and then naturally cooling to finish high-temperature activation treatment;
and (6) activating material treatment, namely performing secondary cleaning and separation on the activated material subjected to high-temperature treatment, placing the activated material in a stirring container containing pure water, regulating the stirring speed of the stirring container to 40 revolutions per minute, stirring for 10 minutes, separating carbon fibers from resin carbon particles by stirring, and finally fishing up the carbon fibers by using a tool similar to a hairbrush to realize complete separation of the carbon fibers from the resin carbon, so that relatively complete carbon fiber yarns are obtained. The carbon fiber yarns can be directly used as chopped carbon fiber yarns and used as raw materials of short fiber carbon/carbon heat-preservation felts;
and (7) filtering the cleaned resin carbon from pure water, drying, wherein the temperature of the drying process is 250 ℃, and then classifying and collecting the resin carbon according to the particle size by using a screen tool, the resin carbon has a higher specific surface area after high-temperature activation treatment and can be used as an adsorption material, namely activated carbon particles, and the resin carbon has a higher specific surface area after high-temperature activation treatment and can be used as an adsorption material, namely activated carbon particles.
The structures of vessel I, vessel II and vessel III used in this example were the same as those of example 1.
The process method can realize the recycling of the epoxy resin-based carbon fiber composite material, utilizes a high-temperature pentoxide carbonization mode, efficiently separates two substances of resin and carbon fiber, both the two substances have utilization values, the carbon fiber can be used as a raw material of a chopped fiber carbon thermal insulation material, and the resin carbon can be used as an activated carbon product. The recycling of the epoxy resin-based composite material is realized by the process method.
Example 3
The third embodiment of the recycling method of the carbon fiber reinforced epoxy resin matrix composite material comprises the following steps:
the method comprises the following steps of (1) preprocessing, cutting waste materials, leftover materials and the like of the carbon fiber reinforced epoxy resin matrix composite material into sections according to specified specifications of 10mm by 50mm, putting the sections into a special container I, soaking the sections by using purified water, and then washing the sections by using fresh purified water, wherein in order to achieve a washing effect, the sections need to be soaked and washed by using flowing water for not less than 2 hours;
classifying the wastes, namely classifying and separately placing the wastes or leftover materials with the cleaned surfaces in a specific container II according to fiber forms, wherein the main forms of the wastes or leftover materials comprise plain carbon cloth fibers, twill carbon cloth fibers, non-woven carbon cloth fibers and filament fibers, the fiber directions of the fiber wastes in the above forms are consistent as much as possible when the wastes are placed, and the fibers in the same fiber form are simultaneously treated and placed in a carbonization furnace;
and (3) performing anaerobic carbonization treatment, performing carbonization operation, firstly vacuumizing a carbonization furnace to less than or equal to 4000Pa, filling argon to normal pressure to be used as protective gas, and then executing a temperature rise process: heating the room temperature to 900 ℃, wherein the heating rate is 100 ℃/h, preserving the heat at 900 ℃ for 4h, and then naturally cooling to finish the oxygen-free carbonization process;
step (4), carbonizing material treatment, namely manually separating and cleaning the carbonized material after carbonization to generally separate the carbonized material into carbon fiber and resin carbon, filling the separated resin carbon into the bottom layer of a container III, and filling the separated carbon fiber into the upper part of the container III;
and (5) high-temperature activation treatment, namely putting the carbon fibers and the resin carbon container III into a high-temperature treatment furnace for high-temperature treatment: firstly, vacuumizing to be less than or equal to 4000Pa, then introducing argon to normal pressure as protective gas, executing a heating process of high-temperature treatment, heating the room temperature to 2000 ℃, preserving the temperature at 2000 ℃ for 4 hours, and then naturally cooling to finish high-temperature activation treatment;
and (6) activating material treatment, namely performing secondary cleaning and separation on the activated material subjected to high-temperature treatment, placing the activated material in a stirring container containing pure water, regulating the stirring speed of the stirring container to 50 revolutions per minute, stirring for 5 minutes, separating carbon fibers from resin carbon particles by stirring, and finally fishing up the carbon fibers by using a tool similar to a hairbrush to realize complete separation of the carbon fibers from the resin carbon, so that relatively complete carbon fiber yarns are obtained. The carbon fiber yarns can be directly used as chopped carbon fiber yarns and used as raw materials of short fiber carbon/carbon heat-preservation felts;
and (7) filtering the cleaned resin carbon from pure water, drying, wherein the temperature of the drying process is 350 ℃, and then classifying and collecting the resin carbon according to the particle size by using a screen tool, the resin carbon has a higher specific surface area after high-temperature activation treatment and can be used as adsorption material activated carbon particles, and the resin carbon has a higher specific surface area after high-temperature activation treatment and can be used as adsorption material activated carbon particles.
The structures of vessel I, vessel II and vessel III used in this example were the same as those of example 1.
The process method can realize the recycling of the epoxy resin-based carbon fiber composite material, utilizes a high-temperature pentoxide carbonization mode, efficiently separates two substances of resin and carbon fiber, both the two substances have utilization values, the carbon fiber can be used as a raw material of a chopped fiber carbon thermal insulation material, and the resin carbon can be used as an activated carbon product. The recycling of the epoxy resin-based composite material is realized by the process method.
The above description is only for the preferred embodiment of the present invention, and should not be taken as limiting the scope of the invention, which is defined by the appended claims and the description of the invention.
Claims (10)
1. The recycling method of the carbon fiber reinforced epoxy resin matrix composite material is characterized by comprising the following steps:
(1) pre-treating, namely cutting waste materials or leftover materials of the carbon fiber reinforced epoxy resin matrix composite material into sections, and soaking and cleaning;
(2) classifying the waste materials, namely classifying the cleaned waste materials or leftover materials according to the fiber form, putting the waste materials or leftover materials into a container II, and putting the waste materials or leftover materials into a carbonization furnace;
(3) anaerobic carbonization treatment, namely vacuumizing a carbonization furnace to be less than or equal to 4000Pa, filling argon to normal pressure to be used as protective gas, and then executing a heating process to finish an anaerobic carbonization procedure;
(4) carbonizing material treatment, namely manually classifying and cleaning the waste materials or leftover materials subjected to anaerobic carbonization treatment into carbon fibers and resin carbon, collecting the separated resin carbon, filling the separated resin carbon into the bottom layer of a container III, and collecting the separated carbon fibers to be filled into the upper part of the container III;
(5) high-temperature activation treatment, namely putting the container III filled with the carbon fibers and the resin carbon into a high-temperature treatment furnace, vacuumizing the high-temperature treatment furnace to be less than or equal to 4000Pa, then filling argon to normal pressure to be used as protective gas, and finally executing a heating process of the high-temperature treatment to finish the high-temperature activation process;
(6) the method comprises the following steps of (1) activating material treatment, namely separating and cleaning the activated material subjected to high-temperature activation treatment, placing the activated material in a stirring container containing pure water, further separating carbon fibers and resin carbon particles by stirring, and finally fishing up the carbon fibers by using a tool with a brush to realize complete separation of the carbon fibers and the resin carbon particles so as to obtain relatively complete carbon fiber yarns;
(7) the washed resin carbon is filtered out from pure water, dried and classified and collected according to particle size by using a screen tool, and the resin carbon has higher specific surface area after being subjected to high-temperature activation treatment and can be used as adsorption material activated carbon particles.
2. The recycling method of carbon fiber reinforced epoxy resin based composite material as claimed in claim 1, wherein in the step (1), the cut waste or leftover material is filled in the container I, and is soaked and washed by purified water, and in order to achieve the washing effect, the container I needs to be soaked and washed by flowing water for not less than 2 hours.
3. The method for recycling carbon fiber reinforced epoxy resin based composite material according to claim 2, wherein said fibers classified by fiber form in step (2) are mainly plain carbon cloth fibers, twill carbon cloth fibers, non-woven carbon cloth fibers and filament fibers, and the fibers of the same fiber form are treated simultaneously.
4. The recycling method of the carbon fiber reinforced epoxy resin-based composite material as claimed in claim 3, wherein the process temperature of the oxygen-free carbonization treatment in the step (3) is 600 ℃ to 900 ℃, and the heating rate of the carbonization furnace is 50 ℃/h to 100 ℃/h.
5. The recycling method of the carbon fiber reinforced epoxy resin-based composite material as claimed in claim 4, wherein the process temperature of the high temperature activation treatment in the step (5) is not lower than 2000 ℃, and the heat preservation is not lower than 4h at 2000 ℃.
6. The recycling method of carbon fiber reinforced epoxy resin based composite material as claimed in claim 5, wherein the stirring speed of the stirring vessel in the step (6) is not lower than 30 r/min, and the stirring time is not lower than 5 min.
7. The recycling method of the carbon fiber reinforced epoxy resin-based composite material as claimed in claim 6, wherein the temperature of the drying process in the step (7) is 100-350 ℃.
8. The recycling method of the carbon fiber reinforced epoxy resin based composite material as claimed in claim 2, wherein the container I is composed of a stainless steel tank and a charging frame, the stainless steel tank is provided with a water inlet and a water outlet, the charging frame is formed by welding stainless steel meshes, and the top of the charging frame is provided with a lifting lug.
9. The recycling method of the carbon fiber reinforced epoxy resin-based composite material as claimed in claim 1, wherein the container II is a cylindrical container made of graphite or carbon, and is provided with a cylindrical cover with holes, and the container is provided with lug holes at the edge.
10. The method for recycling carbon fiber reinforced epoxy resin based composite material as claimed in claim 1, wherein the container III is made of graphite or carbon, is cylindrical, has a perforated cylindrical cover at the top, and is formed by processing and assembling graphite plates or carbon, wherein a graphite plate partition is provided to divide the container III into an upper space and a lower space, the graphite plate partition is provided with hoisting notches, and the graphite plate partition is provided with a plurality of rows of perforations.
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| CN113912416B (en) * | 2021-11-10 | 2022-10-11 | 中国航发北京航空材料研究院 | Method for recycling silicon carbide fibers and application |
| CN114226409A (en) * | 2021-12-08 | 2022-03-25 | 江苏安卡新材料科技有限公司 | Fiber recovery process |
| CN115092927B (en) * | 2022-07-15 | 2023-06-20 | 安徽工程大学 | Carbon fiber composite resin-based activated carbon and preparation method thereof |
| CN115448742B (en) * | 2022-08-29 | 2024-03-29 | 湖南圣瓷科技有限公司 | Alumina antistatic ceramic and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005307121A (en) * | 2004-04-26 | 2005-11-04 | Toho Tenax Co Ltd | Reclaimed carbon fiber and method for recovering the same |
| CN102762318A (en) * | 2010-02-10 | 2012-10-31 | Sgl碳股份公司 | Method for producing a molded part from a carbon material using recycled carbon fibers |
| CN103665427A (en) * | 2013-12-11 | 2014-03-26 | 上海交通大学 | Method for recovering carbon fiber by cracking waste carbon fiber composite material |
| CN106957451A (en) * | 2017-04-01 | 2017-07-18 | 北京化工大学 | A kind of method that carbon fiber is reclaimed from discarded carbon fiber resin matrix composite |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3535972B2 (en) * | 1998-05-21 | 2004-06-07 | 株式会社アシックス | Highly conductive carbon fiber and method for producing the same |
| KR101945595B1 (en) * | 2016-08-31 | 2019-02-07 | 재단법인 한국탄소융합기술원 | Activated carbon manufacturing method for recycling waste carbon fiber reinforced plastics and activated carbon by thereof |
-
2020
- 2020-01-16 CN CN202010047956.2A patent/CN111185462B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005307121A (en) * | 2004-04-26 | 2005-11-04 | Toho Tenax Co Ltd | Reclaimed carbon fiber and method for recovering the same |
| CN102762318A (en) * | 2010-02-10 | 2012-10-31 | Sgl碳股份公司 | Method for producing a molded part from a carbon material using recycled carbon fibers |
| CN103665427A (en) * | 2013-12-11 | 2014-03-26 | 上海交通大学 | Method for recovering carbon fiber by cracking waste carbon fiber composite material |
| CN106957451A (en) * | 2017-04-01 | 2017-07-18 | 北京化工大学 | A kind of method that carbon fiber is reclaimed from discarded carbon fiber resin matrix composite |
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