CN112029147A - Chemical recovery method of aramid fiber reinforced composite material - Google Patents
Chemical recovery method of aramid fiber reinforced composite material Download PDFInfo
- Publication number
- CN112029147A CN112029147A CN202010710007.8A CN202010710007A CN112029147A CN 112029147 A CN112029147 A CN 112029147A CN 202010710007 A CN202010710007 A CN 202010710007A CN 112029147 A CN112029147 A CN 112029147A
- Authority
- CN
- China
- Prior art keywords
- aramid fiber
- composite material
- resin
- fiber reinforced
- reinforced composite
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
- C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/02—Recovery or working-up of waste materials of solvents, plasticisers or unreacted monomers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/10—Polymers characterised by the presence of specified groups, e.g. terminal or pendant functional groups
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2300/00—Characterised by the use of unspecified polymers
- C08J2300/30—Polymeric waste or recycled polymer
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2333/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2333/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2477/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2477/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino carboxylic acids or of polyamines and polycarboxylic acids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a chemical recovery method of an aramid fiber reinforced composite material, and belongs to the technical field of recovery of aramid fiber composite materials. The method for recycling the aramid fiber comprises the following steps: simultaneously placing the resin-based aramid fiber composite material and the mixed recovery solution in a sealed reaction kettle; reacting for 2-8 h under the conditions of normal pressure and temperature of 80-150 ℃; and cleaning the reacted product to obtain the recovered aramid fiber. The method adopts the composite recovered solvent, improves the degradation capability of the mixed recovered solvent on the resin matrix, and improves the fracture, migration and dissolution efficiency of the high polymer resin; the aramid fiber quality is almost lossless, the residual rate of the recovered fiber resin is below 0.5%, and the performance retention rate of the recovered aramid fiber can be above 95%; the polymer resin is dissolved in the degradation solution, and can be used as an additive for plastics, rubber elastomers or paint for secondary application after being separated by a physical and chemical means; the recovered composite recovery solution can be directly recycled.
Description
Technical Field
The invention relates to the technical field of degradation and recovery of aramid fiber reinforced composite materials, in particular to a chemical recovery method of an aramid fiber reinforced composite material.
Background
Aramid fiber is an important national defense and military material, and the fiber reinforced composite material has excellent performances such as high specific strength, specific modulus, high temperature resistance and the like. With the application and popularization of the aramid fiber resin matrix composite material in the fields of aerospace aviation, military protection, automobile traffic, electromechanics, buildings, sports goods and the like, the problem of waste treatment of leftover materials generated in the production process of the aramid fiber resin matrix composite material and reinforced resin matrix composite materials of which the products have expired is more and more obvious. At present, aramid resin-based composite materials are mostly treated by burning, burying or powder and granular fillers as solid wastes. These treatment methods not only cause environmental pollution, but also cause serious waste of resources. Therefore, recycling aramid composite materials is urgent.
The recovery method of the aramid fiber reinforced resin matrix composite material which is disclosed at present mainly comprises the modes of thermal cracking, inorganic strong acid decomposition, sub/supercritical fluid decomposition, high-temperature and high-pressure dissolution and the like. However, the methods have the problems of high requirements on reaction equipment, harsh reaction conditions, high difficulty in separation of degradation products and post-treatment of degradation liquid, high industrialization cost and the like, and in addition, the performance of the aramid fibers before and after recovery is greatly influenced in part of recovery methods, so that the recycling value of the fibers is difficult to meet. Therefore, the method for recycling the aramid fiber reinforced resin matrix composite material, which is simple, efficient, environment-friendly and low in cost, can promote the development of the recycling industry of the aramid fiber composite material waste, reduce the production cost of the aramid fiber composite material and further promote the large-scale application of the aramid fiber composite material in the civil field.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: aiming at various problems in the recovery method of the aramid fiber reinforced resin matrix composite material, the invention provides a chemical recovery method of the aramid fiber reinforced composite material to solve the problems.
In order to solve the technical problems, the invention provides the following technical scheme:
a chemical recovery method of an aramid fiber reinforced composite material is characterized in that the aramid fiber reinforced composite material is recovered by degradation under normal pressure, and comprises the following steps:
step 1: cutting the aramid fiber reinforced composite material into fiber composite material waste materials with equal length, placing the fiber composite material waste materials into a composite recovery solution, and placing the fiber composite material waste materials into a normal-pressure reaction kettle;
step 2: reacting for 2-8 h at the temperature of 80-150 ℃ under normal pressure to ensure that the resin in the short-cut waste is fully contacted with the recovered solution;
and step 3: centrifuging and separating the aramid chopped fibers with the same length which are free in the recovered solution, washing and drying to obtain the high-valued chopped aramid fibers.
And 4, step 4: after the recovered solution is separated by a physical and chemical means, the high molecular resin can be applied to plastics, rubber elastomers or paint for secondary application, and the separated recovered solution can be directly recycled.
Preferably, the aramid fiber reinforced composite material is composed of aramid fibers and resin, wherein the resin base is one or more of polyacrylate resin, polyethylene resin, polypropylene resin, polyvinyl chloride resin, polystyrene resin and phenolic resin.
Preferably, the composite recovery solution consists of a solvent and an auxiliary agent.
Preferably, the mass ratio of the aramid fiber reinforced composite material to the composite recovery solution is 0.01-0.25: 1.
preferably, the physical and chemical separation means of the recovered solution comprises one or more of filtration separation, centrifugal separation, crystallization separation and rectification separation.
Preferably, the solvent of the composite recovery solution comprises one or more of 1-methyl-2-pyrrolidone, N-dimethylformamide, N-dimethylacetamide, amyl acetate, dimethyl sulfoxide, tetrahydrofuran, cyclohexanone, dioxane, trichloroethylene, benzene, toluene, xylene and trimethylbenzene.
Preferably, the auxiliary agent of the composite recovery solution comprises one or no of methanol, ethanol, ethylene glycol, n-butanol, tert-butanol, formic acid, acetic acid, oxalic acid and water.
The invention has the following beneficial effects:
the invention adopts the simplest method to ensure that the molecular configuration of the resin is changed in the degradation solution due to intermolecular force, the molecular chain of the polymer resin is opened or partially broken, migrated and dissolved in the composite recovery solution, thereby separating and recovering the aramid fiber and the modified polymer resin and realizing secondary development and reutilization of resources. The method specifically comprises the following steps:
(1) the composite recovery solvent is adopted, so that the degradation capability of the mixed recovery solvent on a resin matrix is improved, and the fracture, migration and dissolution efficiency of the high polymer resin are improved;
(2) the aramid fiber quality is almost lossless, the residual rate of the recovered fiber resin is below 0.5%, and the performance retention rate of the recovered aramid fiber can be above 95%;
(3) the polymer resin is dissolved in the degradation solution, and can be used as an additive for plastics, rubber elastomers or paint for secondary application after being separated by a physical and chemical means;
(4) the recovered degradation solution can be directly recycled, and has low cost and environmental protection;
in addition, the recovery method of the aramid fiber reinforced composite material has the advantages of mild degradation conditions, simple process operation, no corrosion, less three wastes, environment optimization and the like, and is a method for environment-friendly recovery of the aramid fiber reinforced composite material.
Detailed Description
The following examples are included to provide further detailed description of the present invention and to provide those skilled in the art with a more complete, concise, and exact understanding of the principles and spirit of the invention.
Example 1:
the aramid fiber reinforced composite material is prepared from aramid fibers and polyacrylic resin.
Adding 1 g of aramid fiber composite material chips, 5g of ethylene glycol and 15 g of N, N-dimethylformamide into a three-neck flask, starting a stirrer for stirring, heating the mixture in an oil bath to 140 ℃, starting timing, performing degradation reaction for 60 minutes, cooling, filtering, performing solid-liquid separation, and obtaining solid intermediate carbon fiber and liquid intermediate degradation liquid; washing the obtained solid intermediate product with water, and separating clean aramid fibers after drying; and carrying out reduced pressure distillation on the obtained liquid intermediate product to obtain a degradable reusable high molecular resin polymer and a recovered organic mixed solvent, wherein the residual rate of the aramid fiber resin is 0.3%. The monofilament tensile test is carried out on the aramid fiber recovered from the aramid fiber reinforced composite material waste, the monofilament tensile strength is 103.5CN, and compared with the aramid fiber monofilament tensile strength before degradation of 106.8CN, the strength retention rate is 96.9%.
Example 2:
the aramid fiber reinforced composite material is prepared from aramid fibers and polyethylene resin.
Adding 1 g of aramid fiber composite material fragments, 5g of oxalic acid and 15 g of 1-methyl-2-pyrrolidone into a three-neck flask, starting a stirrer for stirring, heating the mixture in an oil bath to 140 ℃, starting timing, performing degradation reaction for 180 minutes, cooling, filtering, performing solid-liquid separation, and obtaining a solid intermediate product, namely carbon fiber and a liquid intermediate product degradation solution; washing the obtained solid intermediate product with water, and separating clean aramid fibers after drying; and carrying out reduced pressure distillation on the obtained liquid intermediate product to obtain a degradable reusable high molecular resin polymer and a recovered organic mixed solvent, wherein the residual rate of the aramid fiber resin is 0.2%.
Example 3:
the aramid fiber reinforced composite material is prepared from aramid fibers and phenolic resin.
Adding 1 g of aramid fiber composite material fragments, 5g of acetic acid and 5g of dimethylbenzene mixture into a three-neck flask, starting a stirrer for stirring, heating the mixture to 120 ℃ in an oil bath, starting timing, carrying out degradation reaction for 60 minutes, cooling, filtering, carrying out solid-liquid separation, and obtaining solid intermediate carbon fiber and liquid intermediate degradation liquid; washing the obtained solid intermediate product with water, and separating clean aramid fibers after drying; and carrying out reduced pressure distillation on the obtained liquid intermediate product to obtain a degradable reusable high molecular resin polymer and a recovered organic mixed solvent, wherein the residual rate of the aramid fiber resin is 0.2%.
Example 4:
the aramid fiber reinforced composite material is prepared from aramid fibers, polyacrylic resin and polyvinyl resin.
Adding 1 g of aramid fiber composite material chips and 10 g of trimethylbenzene mixture into a three-neck flask, starting a stirrer for stirring, heating the mixture in an oil bath to 120 ℃, starting timing, carrying out degradation reaction for 140 minutes, cooling, filtering, carrying out solid-liquid separation, and obtaining a solid intermediate product, namely carbon fiber and a liquid intermediate product degradation solution; washing the obtained solid intermediate product with water, and separating clean aramid fibers after drying; and carrying out reduced pressure distillation on the obtained liquid intermediate product to obtain a degradable reusable high molecular resin polymer and a recovered organic mixed solvent, wherein the residual rate of the aramid fiber resin is 0.4%.
Example 5:
the aramid fiber reinforced composite material is prepared from aramid fibers, polyacrylic resin and phenolic resin.
Adding 1 g of aramid fiber composite material fragments and 10 g of dimethyl sulfoxide into a three-neck flask, starting a stirrer for stirring, heating the mixture in an oil bath to 140 ℃, starting timing, performing degradation reaction for 15 minutes, cooling, filtering, performing solid-liquid separation, and obtaining a solid intermediate product, namely carbon fiber and a liquid intermediate product degradation solution; washing the obtained solid intermediate product with water, and separating clean aramid fibers after drying; and carrying out reduced pressure distillation on the obtained liquid intermediate product to obtain a degradable reusable high molecular resin polymer and a recovered organic mixed solvent, wherein the residual rate of the aramid fiber resin is 0.2%.
Example 6:
the aramid fiber reinforced composite material is prepared from aramid fibers, polyacrylic resin and polyvinyl resin.
Adding 1 g of aramid fiber composite material chips and 10 g of amyl acetate into a three-neck flask, starting a stirrer for stirring, heating the mixture in an oil bath to 140 ℃, starting timing, carrying out degradation reaction for 30 minutes, cooling, filtering, carrying out solid-liquid separation, and obtaining a solid intermediate product, namely carbon fiber and a liquid intermediate product degradation solution; washing the obtained solid intermediate product with water, and separating clean aramid fibers after drying; and carrying out reduced pressure distillation on the obtained liquid intermediate product to obtain a degradable reusable high molecular resin polymer and a recovered organic mixed solvent, wherein the residual rate of the aramid fiber resin is 0.3%.
Example 7:
the aramid fiber reinforced composite material is prepared from aramid fibers and polyethylene resin.
Adding 1 g of aramid fiber composite material chips and 10 g of dimethylbenzene into a three-neck flask, starting a stirrer for stirring, heating the three-neck flask to 120 ℃ in an oil bath, timing, performing degradation reaction for 5min, cooling, filtering, performing solid-liquid separation, and obtaining a solid intermediate product, namely carbon fiber and a liquid intermediate product degradation liquid; washing the obtained solid intermediate product with water, and separating clean aramid fibers after drying; and carrying out reduced pressure distillation on the obtained liquid intermediate product to obtain a degradable reusable high molecular resin polymer and a recovered organic mixed solvent, wherein the residual rate of the aramid fiber resin is 0.3%.
Example 8: the rest was the same as in example 1, except that 15 g of ethylene glycol and 5g of tetrahydrofuran were used as the degradation solution.
Example 9: the procedure of example 1 was repeated, except that 15 g of ethylene glycol and 5g of methyl ethyl ketone were used as the degradation solution.
Example 10: the rest was the same as example 2 except that the degradation solution was 5g of ethylene glycol and 5g of xylene.
Example 11: the rest was the same as in example 2 except that the degradation solution was 5g of toluene and 5g of dimethyl sulfoxide.
Example 12: the remainder was the same as in example 2 except that the degradation solution was 5g of oxalic acid and 5g of xylene.
The degradation solution in the above embodiment may be equally replaced with one or more of 1-methyl-2-pyrrolidone, N-dimethylformamide, N-dimethylacetamide, amyl acetate, dimethyl sulfoxide, tetrahydrofuran, cyclohexanone, dioxane, trichloroethylene, benzene, toluene, xylene, trimethylbenzene, methanol, ethanol, ethylene glycol, N-butanol, t-butanol, formic acid, acetic acid, oxalic acid, and water. The dosage of the aramid fiber reinforced composite material needs to meet the requirement that the mass ratio of the aramid fiber reinforced composite material to the organic solvent is 0.01-0.25: 1.
in conclusion, the invention adopts the simplest method to ensure that the molecular configuration of the resin is changed in the degradation solution due to intermolecular force, the molecular chain of the polymer resin is opened or partially broken, migrated and dissolved in the degradation solution, thereby separating and recovering the aramid fiber and the modified polymer resin, and realizing secondary development and reuse of resources.
Selectively preparing the degradation capability of the degradation solution according to the physicochemical properties of the resin in the composite material, and improving the fracture, migration and dissolution efficiency of the high polymer resin; the aramid fiber quality is almost lossless, the residual rate of the recovered fiber resin is below 0.5%, and the performance retention rate of the recovered aramid fiber can be above 95%; the polymer resin is dissolved in the degradation solution, and can be used as an additive for plastics, rubber elastomers or paint for secondary application after being separated by a physical and chemical means; the recovered degradation solution can be directly recycled; the recovery method of the aramid fiber reinforced composite material has the advantages of mild degradation conditions, simple process operation, no corrosion, less three wastes, environment optimization and the like, and is a method for environment-friendly recovery of the aramid fiber reinforced composite material.
The above embodiments are only for illustrating the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical scheme according to the technical idea proposed by the present invention falls within the protection scope of the present invention; the technology not related to the invention can be realized by the prior art.
Claims (7)
1. A chemical recovery method of an aramid fiber reinforced composite material is characterized in that the aramid fiber reinforced composite material is recovered by degradation under normal pressure, and comprises the following steps:
step 1: cutting the aramid fiber reinforced composite material into fiber composite material waste materials with equal length, placing the fiber composite material waste materials into a composite recovery solution, and placing the fiber composite material waste materials into a normal-pressure reaction kettle;
step 2: reacting for 2-8 h at the temperature of 80-150 ℃ under normal pressure to ensure that the resin in the short-cut waste is fully contacted with the recovered solution;
and step 3: centrifuging and separating the aramid chopped fibers with the same length which are free in the recovered solution, washing and drying to obtain the high-valued chopped aramid fibers.
And 4, step 4: after the recovered solution is separated by a physical and chemical means, the high molecular resin can be applied to plastics, rubber elastomers or paint for secondary application, and the separated recovered solution can be directly recycled.
2. The chemical recovery method of the aramid fiber reinforced composite material according to claim 1, wherein the aramid fiber reinforced composite material is composed of aramid fibers and resin, wherein the resin base is one or more of polyacrylate resin, polyethylene resin, polypropylene resin, polyvinyl chloride resin, polystyrene resin and phenolic resin.
3. The chemical recovery method of the aramid fiber reinforced composite material as claimed in claim 1, wherein the composite recovery solution is composed of a solvent and an auxiliary agent.
4. The chemical recovery method of the aramid fiber reinforced composite material as claimed in claim 1, wherein the mass ratio of the aramid fiber reinforced composite material to the composite recovery solution is 0.01-0.25: 1.
5. the chemical recovery method of the aramid fiber reinforced composite material as claimed in claim 1, wherein the physical and chemical separation means of the recovery solution comprises one or more of filtration separation, centrifugal separation, crystallization separation and rectification separation.
6. The chemical recovery method of the aramid fiber reinforced composite material as claimed in claim 3, wherein the solvent of the composite recovery solution comprises one or more of 1-methyl-2-pyrrolidone, N-dimethylformamide, N-dimethylacetamide, amyl acetate, dimethylsulfoxide, tetrahydrofuran, cyclohexanone, dioxane, trichloroethylene, benzene, toluene, xylene, and trimethylbenzene.
7. The chemical recovery method of the aramid fiber reinforced composite material as claimed in claim 3, wherein the auxiliary agent of the composite recovery solution comprises one or none of methanol, ethanol, ethylene glycol, n-butanol, t-butanol, formic acid, acetic acid, oxalic acid and water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010710007.8A CN112029147A (en) | 2020-07-22 | 2020-07-22 | Chemical recovery method of aramid fiber reinforced composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010710007.8A CN112029147A (en) | 2020-07-22 | 2020-07-22 | Chemical recovery method of aramid fiber reinforced composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112029147A true CN112029147A (en) | 2020-12-04 |
Family
ID=73582466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010710007.8A Pending CN112029147A (en) | 2020-07-22 | 2020-07-22 | Chemical recovery method of aramid fiber reinforced composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112029147A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802217A (en) * | 2021-09-18 | 2021-12-17 | 株洲时代华先材料科技有限公司 | Meta-aramid fiber waste recovery method and recovery material |
| CN114589836A (en) * | 2022-03-04 | 2022-06-07 | 广东长亨石业有限公司 | Method for extracting fibers from asphalt mixture and measuring mixing amount |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333360A (en) * | 2013-07-10 | 2013-10-02 | 合肥工业大学 | Reinforcement mode based high-performance fiber reinforced resin based composite material recovery method |
| CN109836610A (en) * | 2019-02-28 | 2019-06-04 | 北京化工大学 | The method of aramid fiber is recycled in aramid fiber phenolic resin composite |
| CN109851848A (en) * | 2019-02-21 | 2019-06-07 | 武汉理工大学 | A method of recycling carbon fiber from carbon fiber/phenolic resin composite |
| JP2019104861A (en) * | 2017-12-14 | 2019-06-27 | 埼玉県 | Recycle method of fiber-reinforced resin composite material and system of the same |
| CN111171373A (en) * | 2020-03-09 | 2020-05-19 | 艾达索高新材料芜湖有限公司 | Recovery method of fiber reinforced composite material |
-
2020
- 2020-07-22 CN CN202010710007.8A patent/CN112029147A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103333360A (en) * | 2013-07-10 | 2013-10-02 | 合肥工业大学 | Reinforcement mode based high-performance fiber reinforced resin based composite material recovery method |
| JP2019104861A (en) * | 2017-12-14 | 2019-06-27 | 埼玉県 | Recycle method of fiber-reinforced resin composite material and system of the same |
| CN109851848A (en) * | 2019-02-21 | 2019-06-07 | 武汉理工大学 | A method of recycling carbon fiber from carbon fiber/phenolic resin composite |
| CN109836610A (en) * | 2019-02-28 | 2019-06-04 | 北京化工大学 | The method of aramid fiber is recycled in aramid fiber phenolic resin composite |
| CN111171373A (en) * | 2020-03-09 | 2020-05-19 | 艾达索高新材料芜湖有限公司 | Recovery method of fiber reinforced composite material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113802217A (en) * | 2021-09-18 | 2021-12-17 | 株洲时代华先材料科技有限公司 | Meta-aramid fiber waste recovery method and recovery material |
| CN113802217B (en) * | 2021-09-18 | 2023-08-15 | 株洲时代华先材料科技有限公司 | Method for recycling meta-aramid fiber waste and reclaimed materials |
| CN114589836A (en) * | 2022-03-04 | 2022-06-07 | 广东长亨石业有限公司 | Method for extracting fibers from asphalt mixture and measuring mixing amount |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2019373610B2 (en) | Porous composite material capable of generating electric arc in microwave field, preparation method therefor, and use thereof | |
| CN102181071B (en) | Method for reclaiming carbon fiber reinforced epoxy resin composite material | |
| CN112029147A (en) | Chemical recovery method of aramid fiber reinforced composite material | |
| CN110218294B (en) | Degradable imine epoxy resin curing agent and preparation method and application thereof | |
| CN107082584A (en) | A kind of carbon fibre reinforced composite castoff regenerative carbon fiber method | |
| CN111171373A (en) | Recovery method of fiber reinforced composite material | |
| CN112961403B (en) | Recovery method of fiber-reinforced epoxy resin composite material | |
| CN104045810A (en) | Diamine addition crosslinking agent and preparation method thereof, as well as composition for preparing thermal reversible crosslinking epoxy resin and composite material of thermal reversible crosslinking epoxy resin | |
| CN111574482A (en) | Method for efficiently catalyzing and synthesizing epoxy bisphenol fluorene | |
| CN102786713A (en) | Resource treating method for oil field and oil sludge | |
| CN114634653A (en) | Method for directionally depolymerizing and recycling retired fan blades | |
| CN102399363B (en) | Method for producing hot melt adhesive by using recovered nylon | |
| CN111196879A (en) | Method for recovering carbon fibers from carbon fiber reinforced thermosetting resin-based composite material | |
| CN111793246A (en) | Normal-pressure solvent recovery method for amine curing epoxy resin-based carbon fiber reinforced composite material | |
| CN114479176A (en) | Method for curing epoxy resin and composite material thereof by DES (data encryption standard) degradation of amine | |
| CN103965137A (en) | Method for refining accelerant M(2-mercaptobenzothiazole) by using non-aqueous polarity method | |
| CN101638396A (en) | Production process for rubber accelerator 2-thiol group benzothiazole | |
| CN112321561A (en) | Method for preparing 1, 3-propane sultone from 3-hydroxypropanesulfonic acid | |
| CN115368400B (en) | Process for recycling organic silicon ring body from silicone rubber series substances | |
| CN109825022B (en) | Reversible crosslinked ethylene propylene diene monomer rubber and preparation method thereof | |
| CN111995796A (en) | Electrical degradation recovery method of carbon fiber reinforced composite material | |
| CN112679797A (en) | Method for recovering carbon fiber reinforced resin matrix composite material by subcritical fluid | |
| CN114149586B (en) | Chain-extended polysulfate and preparation method thereof | |
| CN111848359B (en) | Method for separating phenolic substances in medium and low temperature coal tar | |
| CN114752108B (en) | Method for degrading waste tire rubber into asphalt |
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 |
Application publication date: 20201204 |
|
| RJ01 | Rejection of invention patent application after publication |