CN114770981B - Preparation method of scratch-resistant and wear-resistant carbon fiber - Google Patents
Preparation method of scratch-resistant and wear-resistant carbon fiber Download PDFInfo
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- CN114770981B CN114770981B CN202210486597.XA CN202210486597A CN114770981B CN 114770981 B CN114770981 B CN 114770981B CN 202210486597 A CN202210486597 A CN 202210486597A CN 114770981 B CN114770981 B CN 114770981B
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 112
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 112
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 101
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 230000003678 scratch resistant effect Effects 0.000 title claims abstract description 12
- 239000004744 fabric Substances 0.000 claims abstract description 53
- 239000002131 composite material Substances 0.000 claims abstract description 38
- 229920005989 resin Polymers 0.000 claims abstract description 31
- 239000011347 resin Substances 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 24
- 239000011248 coating agent Substances 0.000 claims abstract description 22
- 238000000576 coating method Methods 0.000 claims abstract description 22
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 238000000227 grinding Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 238000005520 cutting process Methods 0.000 claims abstract description 8
- 239000003365 glass fiber Substances 0.000 claims abstract description 8
- 238000010422 painting Methods 0.000 claims abstract description 8
- 238000013329 compounding Methods 0.000 claims abstract description 4
- 239000003822 epoxy resin Substances 0.000 claims description 30
- 229920000647 polyepoxide Polymers 0.000 claims description 30
- 239000000843 powder Substances 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 5
- 239000003054 catalyst Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000011259 mixed solution Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 229920005749 polyurethane resin Polymers 0.000 claims description 4
- 238000007731 hot pressing Methods 0.000 claims description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 2
- 238000000498 ball milling Methods 0.000 claims description 2
- 239000004202 carbamide Substances 0.000 claims description 2
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 claims description 2
- 239000011812 mixed powder Substances 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000000926 separation method Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 33
- 239000011159 matrix material Substances 0.000 abstract description 25
- 239000000835 fiber Substances 0.000 abstract description 17
- IZXIZTKNFFYFOF-UHFFFAOYSA-N 2-Oxazolidone Chemical group O=C1NCCO1 IZXIZTKNFFYFOF-UHFFFAOYSA-N 0.000 description 15
- 230000008569 process Effects 0.000 description 14
- 239000010410 layer Substances 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 229910021423 nanocrystalline silicon Inorganic materials 0.000 description 7
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 6
- 229910052739 hydrogen Inorganic materials 0.000 description 6
- 239000001257 hydrogen Substances 0.000 description 6
- 238000005245 sintering Methods 0.000 description 6
- 238000004132 cross linking Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005266 casting Methods 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000009477 glass transition Effects 0.000 description 3
- 125000000623 heterocyclic group Chemical group 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 239000002086 nanomaterial Substances 0.000 description 3
- 239000002135 nanosheet Substances 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000005476 size effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000003335 steric effect Effects 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- -1 oxazolidinone compound Chemical class 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/546—Measures for feeding or distributing the matrix material in the reinforcing structure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/06—Fibrous reinforcements only
- B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M11/00—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising
- D06M11/73—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof
- D06M11/74—Treating fibres, threads, yarns, fabrics or fibrous goods made from such materials, with inorganic substances or complexes thereof; Such treatment combined with mechanical treatment, e.g. mercerising with carbon or compounds thereof with carbon or graphite; with carbides; with graphitic acids or their salts
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0002—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate
- D06N3/0015—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the substrate using fibres of specified chemical or physical nature, e.g. natural silk
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/007—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by mechanical or physical treatments
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- D06M2101/00—Chemical constitution of the fibres, threads, yarns, fabrics or fibrous goods made from such materials, to be treated
- D06M2101/40—Fibres of carbon
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
- D06N2211/26—Vehicles, transportation
- D06N2211/263—Cars
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention belongs to the technical field of carbon fibers, and discloses a preparation method of scratch-resistant and wear-resistant carbon fibers, which comprises the following steps of S1: the method comprises the steps of compounding carbon fiber cloth, glass fiber cloth and carbon fiber yarns, then cutting the carbon fiber cloth into a required shape, and then presoaking the carbon fiber cloth in slurry; s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die; s3, coating flexible resin on the die paved with the carbon fiber cloth; s4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank; s5, surface grinding and painting an art designer to enable the surface to be smooth. The carbon fiber composite material is a mixed structural material combining rigid and brittle materials into a whole, the rigidity and brittleness of a single material are coordinated, and meanwhile, the flexible resin prepared by the method can enter a matrix resin network under the introduction of slurry, so that the bonding force between fibers and a matrix interface is improved.
Description
Technical Field
The invention belongs to the technical field of carbon fibers, and particularly relates to a preparation method of scratch-resistant and wear-resistant carbon fibers.
Background
In carbon fiber reinforced resin matrix Composites (CFRP), the surface properties of carbon fibers directly affect the interfacial properties of the composites. Due to the limitation of the preparation process, CF presents typical skin-core structural characteristics, is disordered in the interior and has low orientation degree; the ordered surface layer and high orientation degree can lead to further weakening of the interface performance of the composite material. The main defects of the carbon fiber are poor oxidation resistance, obvious oxidation weight loss phenomenon can occur at about 400 ℃ in the air atmosphere, meanwhile, along with the rising of the temperature, the oxidation speed can be increased, and when the fiber is oxidized by 2-5%, the strength can be seriously reduced, and the reduction degree is about half. It is therefore important to improve the oxidation resistance of carbon fibers.
Disclosure of Invention
The invention aims to provide a preparation method of scratch-resistant and wear-resistant carbon fiber, wherein the carbon fiber composite material is a mixed structure material which combines rigid and brittle materials into a whole, the rigidity and brittleness of a single material are coordinated, and meanwhile, the prepared flexible resin can enter a matrix resin network under the introduction of slurry, so that the bonding force between the fiber and a matrix interface is improved.
The technical aim of the invention is realized by the following technical scheme: s1, preparing raw materials: the method comprises the steps of compounding carbon fiber cloth, glass fiber cloth and carbon fiber yarns, then cutting the carbon fiber cloth into a required shape, and then presoaking the carbon fiber cloth in slurry;
s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die;
s3, coating flexible resin on the die paved with the carbon fiber cloth;
S4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank;
s5, surface grinding and painting an art designer to enable the surface to be smooth;
By adopting the technical scheme, the composite carbon fiber cloth is synthesized in such a way that on one hand, the carbon coating on the surface of the carbon fiber can effectively inhibit structural damage of the carbon fiber in the preparation and application processes, even can serve as a sacrificial layer to protect the fiber from corrosion in an extreme oxidation environment, on the other hand, the carbon coating can effectively regulate and control interface performance, increase the fiber pulling mechanism, and finally greatly increase the damage tolerance of the composite material; the carbon fiber composite material is a mixed structural material combining rigid and brittle materials into a whole, and coordinates the rigidity and the brittleness of a single material, which is generated by the structure of the composite material and the influence of the composite material on crack behavior and load distribution; the composite fiber cloth is then immersed into the prepared slurry, the nano material with excellent performance is introduced to the surface of the carbon fiber, so that the high-surface skin-core structure of the carbon fiber can be obviously improved, the specific functionality of the carbon fiber is abundant, the flexible resin prepared in the invention can enter a matrix resin network under the introduction of the slurry, and the material is coated on the surface of the carbon fiber by a sizing method, thereby being beneficial to improving the bonding force between the fiber and a matrix interface.
The invention is further provided with: the composite carbon fiber cloth is formed by sintering a plurality of substances in the carbon fiber cloth, zr 3N4、SiO2、SiB2 and an auxiliary agent.
The invention is further provided with: the composite carbon fiber cloth is prepared through the following steps: s1: mixing Zr 3N4、SiB2 powder and an auxiliary agent in ethanol, adding the mixture into a ball milling tank, and grinding for 2 hours, wherein S2: and (3) alternately laying the mixed powder obtained in the step (S1) and carbon fibers in a crucible, separating the powder from the carbon fibers by placing SiO 2 powder, and hot-pressing at 1400 ℃ for 1h under 15 MPa.
According to the technical scheme, the composite material is prepared by adopting the hot-pressing sintering method, in order to improve the bonding strength of the carbon fiber and the powder matrix, a thin SiO 2 powder layer is added between the carbon fiber layer and the powder layer, the bonding strength of the fiber layer and the matrix is improved, in the sintering process, as the SiO 2 powder layer is of a loose and porous structure, hole defects are also formed in the carbon fiber, the carbon fiber can be mutually fused after being sintered and fused at a high temperature, the bonding capability is improved, the Zr 3N4 in the composite material can form a compact ZrO 2 oxide layer in the sintering process, the effect of protecting the carbon fiber is achieved in the high-temperature sintering process, the chemical compatibility is improved, and the composite material is placed to react with the matrix.
The invention is further provided with: the auxiliary agent is a mixed solution of 5% of Al 2O3 and 5% of Y 2O3 by mass.
By adopting the technical scheme, sintering aids Al 2O3 and Y 2O3 are uniformly dispersed in the matrix and sintered to form a glass phase.
The invention is further provided with: the slurry is a ternary lamellar structure compound.
The invention is further provided with: the ternary lamellar structure compound is Ti 3C2F2 slurry.
By adopting the technical scheme, ti 3C2F2 is prepared by an acid solution etching method, so that the surface of a sheet layer of the nano-crystalline silicon composite material generally has a certain number of-OH, =O and-F groups, the dispersibility of the nano-crystalline silicon composite material in water or other organic solvents is improved, meanwhile, the main reason is that the 0.5 mu m small-diameter Ti 3C2F2 nano-crystalline silicon composite material is coated on the surface of a carbon fiber due to the different morphology and morphology of the nano-crystalline silicon composite material due to the size effect, so that a plurality of small bulge structures are formed on the surface of the nano-crystalline silicon composite material, the subsequent resin matrix is wetted on the surface of the nano-crystalline silicon composite material, the interface performance is enhanced, and the nano-crystalline silicon composite material is combined with epoxy resin matrix to form a plurality of mechanical tenon-mortise structures which are closely contacted and have high bonding strength in the curing and forming process, and the bonding of two phases with high bonding strength is realized.
Meanwhile, the deposition of the Ti 3C2F2 nano-sheets on the surface of the carbon fiber is directly participated in a cross-linking curing system of the epoxy resin matrix, so that the rigidity of the interface layer of the composite material is obviously enhanced, and further, the uniform and effective transmission of the load is realized. In addition, the introduction of MXene also obviously improves the flame retardant property of the carbon fiber composite material.
The invention is further provided with: the flexible resin is prepared by: s1: firstly, vacuum dehydrating epoxy resin for 2 hours, then adding a catalyst into the dehydrated epoxy resin, stirring for 0.5 hour, slowly dripping polyurethane resin after the catalyst is completely dissolved, and stirring and reacting for 4 hours under the vacuum condition to obtain modified epoxy resin; s2: dicyandiamide, an organic urea accelerator and epoxy resin are mixed in proportion, and after being ground and dispersed by a grinder, the mixed solution and the modified epoxy resin are mixed and stirred for reaction for 1h, so that flexible resin is obtained, and the catalyst is an oxazolidinone compound.
By adopting the technical scheme, the polyurethane resin is used for modifying the epoxy resin to synthesize the material containing the oxazolidone structure, the oxazolidone is in a rigid five-membered heterocyclic structure, so that the steric hindrance effect is generated, and the carbonyl group on the oxazolidone structure and the hydroxyl group in the resin system form a hydrogen bond, so that the glass transition temperature of the epoxy resin is improved; the carbonyl has larger covalent bond energy, so that the heat resistance of the epoxy resin can be improved; the steric hindrance effect of the high-rigidity oxazolidone structure improves the modulus of the resin, increases the cohesive force of the whole material, improves the strength of the material, and also has a certain contribution to the improvement of the performance due to the formation of hydrogen bonds; the linear long-chain structure of the oxazolidone material reduces the crosslinking density in the casting body, releases the internal stress of the curing reaction, absorbs the energy in the impact process and improves the toughness of the epoxy resin system.
The beneficial effects of the invention are as follows: .
1. By adopting the technical scheme, the composite carbon fiber cloth is synthesized in such a way that on one hand, the carbon coating on the surface of the carbon fiber can effectively inhibit structural damage of the carbon fiber in the preparation and application processes, even can serve as a sacrificial layer to protect the fiber from corrosion in an extreme oxidation environment, on the other hand, the carbon coating can effectively regulate and control interface performance, increase the fiber pulling mechanism, and finally greatly increase the damage tolerance of the composite material; the carbon fiber composite material is a mixed structural material combining rigid and brittle materials into a whole, and coordinates the rigidity and the brittleness of a single material, which is generated by the structure of the composite material and the influence of the composite material on crack behavior and load distribution; the composite fiber cloth is then immersed into the prepared slurry, the nano material with excellent performance is introduced to the surface of the carbon fiber, so that the high-surface skin-core structure of the carbon fiber can be obviously improved, the specific functionality of the carbon fiber is abundant, the flexible resin prepared in the invention can enter a matrix resin network under the introduction of the slurry, and the material is coated on the surface of the carbon fiber by a sizing method, thereby being beneficial to improving the bonding force between the fiber and a matrix interface.
2. The Ti 3C2F2 nano-sheets are coated on the surface of the carbon fiber due to different morphology and morphology of the carbon fiber by the size effect, so that a plurality of small bulge structures are formed on the surface of the carbon fiber, the subsequent resin matrix is wetted on the surface of the carbon fiber, the interface performance is enhanced, a plurality of mechanical mortise-tenon structures which are closely contacted with the epoxy resin matrix and have high bonding strength are constructed in the curing and forming process, and the bonding of two phases of high bonding strength is realized.
3. The epoxy resin is modified by polyurethane resin to synthesize a material containing an oxazolidone structure, and as the oxazolidone is of a rigid five-membered heterocyclic structure, a steric effect is generated, and a carbonyl group on the oxazolidone structure and a hydroxyl group in a resin system form a hydrogen bond, the glass transition temperature of the epoxy resin is improved; the carbonyl has larger covalent bond energy, so that the heat resistance of the epoxy resin can be improved; the steric hindrance effect of the high-rigidity oxazolidone structure improves the modulus of the resin, increases the cohesive force of the whole material, improves the strength of the material, and also has a certain contribution to the improvement of the performance due to the formation of hydrogen bonds; the linear long-chain structure of the oxazolidone material reduces the crosslinking density in the casting body, releases the internal stress of the curing reaction, absorbs the energy in the impact process and improves the toughness of the epoxy resin system.
Detailed Description
The technical solutions in the embodiments will be clearly and completely described below. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Comparative example 1: a preparation method of scratch-resistant and wear-resistant carbon fiber,
S1, preparing raw materials: cutting carbon fiber cloth, glass fiber cloth and carbon fiber filaments into a required shape, and presoaking the carbon fiber cloth in slurry;
s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die;
s3, coating epoxy resin on the die paved with the carbon fiber cloth;
S4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank;
s5, surface grinding and painting an art designer to enable the surface to be smooth.
Example 1: a preparation method of scratch-resistant and wear-resistant carbon fiber,
S1, preparing raw materials: the method comprises the steps of compounding carbon fiber cloth, glass fiber cloth and carbon fiber yarns, then cutting the carbon fiber cloth into a required shape, and then presoaking the carbon fiber cloth in slurry;
s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die;
s3, coating epoxy resin on the die paved with the carbon fiber cloth;
S4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank;
s5, surface grinding and painting an art designer to enable the surface to be smooth.
Example 2: a preparation method of scratch-resistant and wear-resistant carbon fiber,
S1, preparing raw materials: cutting carbon fiber cloth, glass fiber cloth and carbon fiber filaments into a required shape, and presoaking the carbon fiber cloth in Ti 3C2F2 slurry;
s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die;
s3, coating epoxy resin on the die paved with the carbon fiber cloth;
S4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank;
s5, surface grinding and painting an art designer to enable the surface to be smooth.
Example 3: a preparation method of scratch-resistant and wear-resistant carbon fiber,
S1, preparing raw materials: cutting carbon fiber cloth, glass fiber cloth and carbon fiber filaments into a required shape, and presoaking the carbon fiber cloth in slurry;
s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die;
s3, coating flexible resin on the die paved with the carbon fiber cloth;
S4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank;
s5, surface grinding and painting an art designer to enable the surface to be smooth.
Example 4: a preparation method of scratch-resistant and wear-resistant carbon fiber,
S1, preparing raw materials: cutting the composite carbon fiber cloth, the glass fiber cloth and the carbon fiber filaments into a required shape, and presoaking the carbon fiber cloth in Ti 3C2F2 slurry;
s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die;
s3, coating flexible resin on the die paved with the carbon fiber cloth;
S4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank;
s5, surface grinding and painting an art designer to enable the surface to be smooth.
Mechanical properties of the carbon fibers prepared in comparative example 1 and examples 1 to 4 were tested to obtain the following data:
table 1 mechanical properties index of comparative examples and carbon fiber products in each example
As can be seen from table 1, in the manner of preparing the automobile parts by adopting the conventional carbon fiber in the comparative example 1, each mechanical index is lower than that of the data in the examples 1 to 4, and compared with the comparative example 1, the main raw material adopted in the example 1 is the composite fiber cloth, because the carbon coating on the surface of the carbon fiber can effectively inhibit the structural damage of the carbon fiber in the preparation and application processes, the carbon fiber can even serve as a sacrificial layer in an extreme oxidation environment to protect the fiber from corrosion, and on the other hand, the carbon coating can effectively regulate and control the interface performance, increase the mechanism of fiber extraction, and finally greatly increase the damage tolerance of the composite material; the carbon fiber composite material is a mixed structural material combining rigid and brittle materials into a whole, the rigidity and the brittleness of a single material are coordinated, compared with comparative example 1, the slurry adopted in example 2 is specially made Ti 3C2F2 slurry, so that the slurry is constructed into a plurality of mechanical tenon-and-mortise structures which are closely contacted with epoxy resin matrix in the curing and forming process and have high bonding strength, the bonding of two phases of high bonding strength is realized, the mechanical properties are high, compared with example 2, after the slurry is replaced by the Ti 3C2F2 slurry only in example 1, In the case of the mechanical data lower than that of the mechanical data of the example 1, compared with the mechanical data of the comparative example 1, the mechanical data of the example 3 is lower than that of the mechanical data of the comparative example 1, because the oxazolidone is in a rigid five-membered heterocyclic structure, the steric effect is generated, and the carbonyl group on the oxazolidone structure and the hydroxyl group in the resin system form a hydrogen bond, so that the glass transition temperature of the epoxy resin is improved; The carbonyl has larger covalent bond energy, so that the heat resistance of the epoxy resin can be improved; the steric hindrance effect of the high-rigidity oxazolidone structure improves the modulus of the resin, increases the cohesive force of the whole material, improves the strength of the material, and also has a certain contribution to the improvement of the performance due to the formation of hydrogen bonds; The presence of the linear long-chain structure of the oxazolidone material reduces the crosslinking density inside the casting body, releases the internal stress of the curing reaction, absorbs the energy in the impact process and improves the toughness of the epoxy resin system, therefore, each data in the example 3 is superior to each data in the comparative example 1, compared with the comparative example 1 and the examples 1-3, the high-surface 'skin-core' structure of the carbon fiber can be obviously improved by introducing the nano material with excellent performance to the surface of the carbon fiber due to the synergistic effect of each substance in the example 4, and the specific functionality thereof is abundant, the flexible resin prepared in the invention can enter the network of the matrix resin under the introduction of the slurry, The surface of the carbon fiber is coated with the material by a sizing method, which is favorable for improving the bonding force between the fiber and the matrix interface, meanwhile, the Ti 3C2F2 nano-sheets form a plurality of small bulge structures on the surface of the composite carbon fiber, which is favorable for wetting the subsequent resin matrix on the surface thereof, the interface performance is enhanced, a plurality of mechanical mortise-tenon structures which are closely contacted with the epoxy resin matrix and have high bonding strength are constructed in the curing and forming process, the bonding of two phases with high bonding strength is realized, in addition, the linear long-chain structure of the oxazolidinone material exists, The crosslinking density in the casting body is reduced, the internal stress of the curing reaction is released, the energy in the impact process is absorbed, and the toughness of the epoxy resin system is improved.
In summary, the invention aims to provide a preparation method of scratch-resistant and wear-resistant carbon fiber, wherein the carbon fiber composite material is a mixed structure material which combines rigid and brittle materials into a whole, so that the rigidity and brittleness of a single material are coordinated, and meanwhile, the prepared flexible resin can enter a matrix resin network under the introduction of slurry, thereby being beneficial to improving the bonding force of the fiber and a matrix interface.
Claims (1)
1. A preparation method of scratch-resistant and wear-resistant carbon fiber is characterized by comprising the following steps:
S1, preparing raw materials: the method comprises the steps of compounding carbon fiber cloth, glass fiber cloth and carbon fiber yarns, then cutting the carbon fiber cloth into a required shape, and then presoaking the carbon fiber cloth in slurry;
s2, coating a release agent on the die, and then paving the carbon fiber cloth prepared in the step S1 in the die;
s3, coating flexible resin on the die paved with the carbon fiber cloth;
S4, placing the die into a vacuum bag for vacuumizing; heating and curing in a vacuum heating tank;
s5, surface grinding and painting an art designer to enable the surface to be smooth;
The composite carbon fiber cloth is prepared through the following steps: s1: mixing Zr 3N4、SiB2 powder and an auxiliary agent in ethanol, adding the mixture into a ball milling tank, and grinding for 2 hours, wherein S2: the mixed powder obtained in the step S1 and carbon fibers are alternately laid in a crucible, siO 2 powder is placed between the powder and the carbon fibers for separation, and hot pressing is carried out for 1h at 1400 ℃ under 15 MPa; the auxiliary agent is a mixed solution of 5% of Al 2O3 and 5% of Y 2O3 by mass fraction;
The slurry is a ternary lamellar structure compound, and the ternary lamellar structure compound is Ti 3C2F2 slurry;
the flexible resin is prepared by: s1: firstly, vacuum dehydrating epoxy resin for 2 hours, then adding a catalyst into the dehydrated epoxy resin, stirring for 0.5 hour, slowly dripping polyurethane resin after the catalyst is completely dissolved, and stirring and reacting for 4 hours under the vacuum condition to obtain modified epoxy resin; s2: mixing dicyandiamide, an organic urea accelerator and epoxy resin in proportion, grinding and dispersing by a grinder, and mixing and stirring the mixed solution and the modified epoxy resin for reaction for 1h to obtain the flexible resin.
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| CN113248746A (en) * | 2021-06-04 | 2021-08-13 | 北京化工大学 | Method for improving high-modulus carbon fiber composite material interface performance |
| CN114181372A (en) * | 2021-12-14 | 2022-03-15 | 中威北化科技有限公司 | High-toughness epoxy resin suitable for RTM (resin transfer molding) rapid curing requirement and synthesis method thereof |
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| CN106349650A (en) * | 2016-08-29 | 2017-01-25 | 江苏恒神股份有限公司 | Epoxy resin composition, preparing method, preparing method of prepreg and preparing method of composite |
| CN113248746A (en) * | 2021-06-04 | 2021-08-13 | 北京化工大学 | Method for improving high-modulus carbon fiber composite material interface performance |
| CN114181372A (en) * | 2021-12-14 | 2022-03-15 | 中威北化科技有限公司 | High-toughness epoxy resin suitable for RTM (resin transfer molding) rapid curing requirement and synthesis method thereof |
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