CN113942249A - Method for repairing woven texture of carbon fiber composite material appearance - Google Patents
Method for repairing woven texture of carbon fiber composite material appearance Download PDFInfo
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- CN113942249A CN113942249A CN202111091086.XA CN202111091086A CN113942249A CN 113942249 A CN113942249 A CN 113942249A CN 202111091086 A CN202111091086 A CN 202111091086A CN 113942249 A CN113942249 A CN 113942249A
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- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 87
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 87
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000002131 composite material Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000011347 resin Substances 0.000 claims abstract description 65
- 229920005989 resin Polymers 0.000 claims abstract description 65
- 239000004744 fabric Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 28
- 239000011248 coating agent Substances 0.000 claims abstract description 14
- 238000000576 coating method Methods 0.000 claims abstract description 14
- 230000007547 defect Effects 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims abstract description 3
- 238000007711 solidification Methods 0.000 claims abstract description 3
- 230000008023 solidification Effects 0.000 claims abstract description 3
- 238000005498 polishing Methods 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 8
- 238000002955 isolation Methods 0.000 claims description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 5
- 244000137852 Petrea volubilis Species 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
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- 230000001680 brushing effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007788 roughening Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- XQUPVDVFXZDTLT-UHFFFAOYSA-N 1-[4-[[4-(2,5-dioxopyrrol-1-yl)phenyl]methyl]phenyl]pyrrole-2,5-dione Chemical compound O=C1C=CC(=O)N1C(C=C1)=CC=C1CC1=CC=C(N2C(C=CC2=O)=O)C=C1 XQUPVDVFXZDTLT-UHFFFAOYSA-N 0.000 description 1
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- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
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- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention relates to a method for repairing woven textures of the appearance of a carbon fiber composite material, which comprises the steps of dividing a repair area on the surface according to appearance defects, preparing resin, carbon fiber prepreg cloth, repair auxiliary materials and a vacuum bag, wherein the resin is the same resin system as the original resin, and the carbon fiber prepreg cloth and the original carbon fiber prepreg cloth are the same in model; sequentially coating a first layer of resin, laying carbon fiber prepreg, coating a second layer of resin and laying a demolding auxiliary material on the repair area, coating the repair area with a vacuum bag, sealing, vacuumizing, heating, pressurizing and curing; and after the solidification is finished, opening the vacuum bag, and removing the demolding auxiliary material to obtain a repaired product. According to the invention, the carbon fiber product part does not need to be replaced, the surface of the carbon fiber product can be directly repaired, and the material waste is avoided; the problem that the texture of the carbon fiber composite material cannot be repaired is solved, the appearance quality of the carbon fiber product is improved, the production yield is improved, and therefore the manufacturing cost of the carbon fiber product is reduced.
Description
Technical Field
The invention belongs to the field of carbon fiber composite materials, and particularly relates to a method for repairing woven textures of the appearance of a carbon fiber composite material.
Background
The carbon fiber composite material becomes a preferable material for various industries due to the advantages of excellent high specific modulus, high specific strength, designability and the like, and more manufacturers compound the carbon fiber composite material with products or directly manufacture the carbon fiber composite material into products so as to achieve the purposes of lighter, firmer and more durable products. However, due to the material properties of the carbon fiber composite material, the product made of the carbon fiber composite material lacks plasticity and ductility. When the product of the carbon fiber composite material cracks due to scratching, collision and the like, the common maintenance mode comprises replacement of damaged parts, if the product is not maintained, the performance of the carbon fiber composite material is greatly influenced, and particularly when the appearance requirement of some products is higher, the maintenance is required, so that the later-stage use and maintenance cost of the product manufactured by the carbon fiber composite material is higher.
In a common composite material product for exterior decoration, carbon fiber prepreg is used on the surface of the composite material product. The carbon fiber prepreg is easy to be distorted and deformed in the process of manufacturing products, so that the appearance of the final product is unqualified. Carbon fibers have strict texture requirements for exterior trim parts (such as automobile exterior trim, doors, tail fins, hoods, etc.), and defects in texture may cause customers to reject returns. At present, aiming at products with certain texture requirements of carbon fiber composite materials, particularly products with high appearance requirements, a common repairing mode is to repair the products by using a repairing agent, the repairing method can solve the problem of common surface defects and ensure certain appearance requirements, but when the defects of texture distortion and inconsistent yarn width occur in the manufacturing process of the carbon fiber products, the method cannot repair the defects. There is a need for a simpler, faster, and less costly repair method.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a method for repairing the woven texture of the appearance of a carbon fiber composite material, which is used for improving the texture repairing efficiency of the existing carbon fiber product and reducing the repairing cost.
In order to achieve the purpose, the invention adopts the technical scheme that:
a method for repairing the woven texture of the appearance of a carbon fiber composite material comprises
S1, repair preparation stage:
(1) according to the defects of the appearance of the product to be repaired, a repairing area needing to be repaired is divided on the surface of the carbon fiber composite material,
(2) preparing resin, carbon fiber prepreg, repair auxiliary material and a vacuum bag, wherein the resin is in the same resin system with the resin used by the product to be repaired, the carbon fiber prepreg is the same as the original carbon fiber prepreg on the surface of the product to be repaired in model, and the carbon fiber prepreg, the repair auxiliary material and the vacuum bag are all cut to a set shape;
s2, repairing operation stage:
sequentially coating a first layer of resin, laying carbon fiber prepreg, coating a second layer of resin and laying a demolding auxiliary material on the repair area, coating a product to be repaired with a vacuum bag, sealing, vacuumizing the vacuum bag, and heating and pressurizing the vacuum bag to cure the product to be repaired;
s3, post-repair treatment stage:
and after the solidification is finished, opening the vacuum bag, and removing the demolding auxiliary material to obtain a repaired product.
Preferably, when the vacuum bag is vacuumized, the negative pressure in the vacuum bag is pumped to be less than-0.095 MPa.
Preferably, the vacuum bag is provided with a connecting port, and in the repair operation stage, a vacuum extractor is connected to the connecting port, and the sealing joint of the vacuum bag is sealed by sealing cement.
Preferably, after the repaired product is obtained, the excess resin flash on the surface of the product is removed.
Preferably, the dividing of the repair area comprises: and searching the boundary of the texture region containing the texture defects, wherein the boundary is positioned at a joint line of the product to be detected or a position where texture splicing and bending occur, and defining the whole range in the boundary of the texture region as a repair region.
Further preferably, when dividing the repair area, if the defect extends across the boundaries of the plurality of texture areas, each texture area is determined as a repair area and is repaired separately.
Preferably, in S1, the repair area surface is pre-treated: and (3) roughly polishing the divided repair area, comprising: and (3) polishing the repair area to the surface of the repair area by using 120-400-mesh sand paper in a mechanical and/or manual mode until the dyne value of the repair area is not less than 30.
Further preferably, cleaning the abraded repair area prior to applying the first layer of resin comprises: and blowing the polished repair area by using compressed air, wiping the repair area by using dust-free cloth stained with alcohol, and standing and airing the repair area.
Preferably, in the repair preparation stage, the carbon fiber prepreg is cut to have a shape and a size that are consistent with those of the repair area.
Preferably, the demolding auxiliary material comprises demolding cloth, an isolating film and an air felt, and the cut demolding cloth, the isolating film and the air felt can completely cover the cut carbon fiber prepreg cloth.
Further preferably, a release fabric is laid flat and without overlap on the second layer of resin and covers it completely, an isolation film is laid flat and without overlap on the release fabric, and an airfelt is laid flat and without overlap on the isolation film.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
according to the invention, the carbon fiber product part does not need to be replaced, the surface of the carbon fiber product can be directly repaired, and the waste of materials is avoided; the problem that the texture of the carbon fiber composite material cannot be repaired is solved, the appearance quality of the carbon fiber product is improved, and the yield of production is improved, so that the manufacturing cost of the carbon fiber product is reduced; the repairing process is simple and clear, the repairing efficiency is improved, and the production efficiency of products is improved.
Drawings
Fig. 1 is a schematic structural diagram of the vacuum bag for sealing and wrapping a product to be repaired with the product in this embodiment.
In the above drawings: 1. producing a product; 2. a first layer of resin; 3. carbon fiber prepreg cloth; 4. a second layer of resin; 5. demolding the cloth; 6. an isolation film; 7. an air-permeable felt; 8. vacuum bag; 9. and (5) sealing the daub.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A method for repairing the woven texture of the appearance of a carbon fiber composite material comprises a repair preparation stage, a repair operation stage and a repair post-treatment stage which are sequentially carried out, wherein a product to be repaired is moved to each station to be respectively carried out corresponding operation, the original texture area is completely covered by the method, new textures are formed, and therefore repair is completed.
S1, repair preparation stage:
(1) according to the defects of the appearance of the product to be repaired, a repairing area needing to be repaired is marked off on the surface of the carbon fiber composite material. The division of the repair area includes: observing the texture of the original carbon fiber prepreg cloth of the product to be repaired, dividing different texture areas according to the difference of the texture, searching the boundary of the texture area containing the texture defects, wherein the boundary is positioned at the joint line of the product to be repaired or the joint and bending positions of the texture, and dividing the whole range in the boundary of the texture area into the repair area. When dividing, if the defect extends across the boundaries of a plurality of texture regions, each texture region is determined as a repair region and repaired separately. The normal area which does not need to be repaired needs to be protected and shielded, and in the embodiment, the normal area is covered by a protective film, paper, an adhesive tape and the like, so that pollution is avoided.
(2) Preparing resin, carbon fiber prepreg, repair auxiliary material and a vacuum bag.
The resins commonly used are classified into different systems, such as epoxy systems, phenolic systems, unsaturated polyester systems, bismaleimide systems, etc., each of which contains a different type of resin. The selected resin and the resin used for the product to be repaired are the same resin system during manufacturing, the curing system is close to that of the selected resin, but the specific types of the resins can be the same or different. The resin comprises a plurality of components, the components are stored separately during storage and are prepared on site only when used, so as to ensure good performance, and the prepared resin is used up within about 60min (the time is different for different resins), and the resin needs to be prepared again after the time is exceeded. The resin with different models comprises different components and the mixture ratio of the components, and after the resin is selected, the resin is blended according to the process requirement of the resin with the model. During the preparation, the mixture is prepared at 25 +/-5 ℃, and after the resin is prepared, the mixture is stored at 25 +/-5 ℃. The resin needs to be vacuumed debubbled before use: and (3) putting the blended resin into a vacuum box, starting a vacuum pump to vacuumize, closing the vacuum pump after 15min, and opening the vacuum box to take out the resin to complete vacuum defoaming of the resin.
The model of the selected carbon fiber prepreg is the same as that of the original carbon fiber prepreg on the surface of the product to be repaired (the model is the same, namely the carbon fiber precursors used by the carbon fiber prepreg are consistent, the fiber tows are consistent, and the fiber weaving modes are consistent, such as 3k twill, 3k plain weave and the like), when the carbon fiber prepreg is used, the original distorted carbon fiber prepreg on the surface of the product to be repaired is covered, and then a layer is made again to repair the appearance of the product. And cutting the selected carbon fiber prepreg, and cutting the shape and the size of the carbon fiber prepreg to be consistent with those of the repair area to be repaired, so that the carbon fiber prepreg is just matched with the repair area.
The demolding auxiliary material is arranged between the carbon fiber prepreg cloth and the vacuum bag to help demolding, comprises demolding cloth, an isolating film and an air felt, and ensures that various auxiliary materials covered on the surface of a product are easy to tear off when the product is repaired by the demolding cloth, so that demolding is facilitated; the isolating film isolates the resin from the air-permeable felt and the vacuum bag, so that the demoulding is convenient, and the resin content on the surface of the product can be improved to ensure that the surface of the product is smooth; the air-permeable felt is woven by a polyester non-woven material, is a felt-shaped material with high porosity, can ensure smooth airflow on the surface of a product, has higher vacuum degree and good absorption performance, and can absorb extra resin or be used as a medium in a vacuum process. And cutting the selected demolding cloth, the isolating film and the air felt to enable the demolding cloth, the isolating film and the air felt to completely cover the cut carbon fiber prepreg cloth, wherein the edges of the carbon fiber prepreg cloth after the covering can exceed the edges of the carbon fiber prepreg cloth by 3-5mm, so that the carbon fiber prepreg cloth and resin are prevented from being exposed to the outside during repair to cause appearance repair flaws and influence on the effect.
And selecting a vacuum bag for wrapping the product ready to be repaired and vacuumizing, wherein a connecting hole for connecting a vacuumizing device is formed in the vacuum bag, and cutting the vacuum bag to completely wrap the product to be repaired and the demolding auxiliary material.
(3) Surface pretreatment of the repair area: the divided repairing areas are roughly ground, the ground repairing areas are cleaned, a layer of release agent is usually arranged on the surface of a molded product and is taken down from the surface of a mold when the product is demolded, and one purpose of surface roughening is to grind the release agent layer. The repairing area is polished by using sand paper, and the bright surface (surface release agent) of the product is sequentially and completely polished to be rough by using 120-mesh 400-mesh sand paper in a machine and/or manual mode, so that the polishing degree of any position in the repairing area is ensured to be consistent, in the embodiment, the polishing sequence is 120 (mechanical polishing) -240 (manual polishing) -400 (manual polishing), and the polishing is fixed in a transverse and vertical mode. After polishing, whether the surface is rough or not is generally judged by visual observation, and if the requirement is high, a dyne pen can be used for judging the roughening effect, and the dyne value is generally required to be more than 30. Polishing the repair area roughly, blowing the polished repair area by using compressed air, slightly blowing the repair area by using an air gun nozzle at a distance of about 300mm from the surface of the repair area and using the air pressure of 0.6-0.8MPa, and blowing the polished dust and impurities clean; and then, spraying a proper amount of alcohol (wetting the dust-free cloth) on the dust-free cloth by using an alcohol spraying kettle, uniformly wiping the roughened surface of the repair area by using the dust-free cloth stained with the alcohol, ensuring that the repair area is completely wiped cleanly (without dust, oil stain or other dirt), standing for about 2min, and airing.
S2, repairing operation stage:
as shown in fig. 1, various materials are laid on the repaired area of the product 1. First a first layer of resin 2 is applied. And brushing the prepared resin in the repair preparation stage on a repair area by using a brush, wherein the repair area has no missing coating area, and the coating thickness is uniform, namely the resin does not sag. Then carbon fiber prepreg 3 is laid. On the first layer of resin 2, the cut carbon fiber prepreg 3 is laid, and the carbon fiber prepreg 3 is scraped flat with a scraper. A second layer of resin 4 is then applied. And uniformly brushing the prepared resin on the surface of the laid carbon fiber prepreg 3 by using a brush, wherein no coating missing area exists, and the coating thickness is uniform, namely, the resin does not sag. And paving demoulding auxiliary materials. The cut release cloth 5 is laid on the second layer of resin 4 flatly without lap joint and completely covered, then the release cloth 5 is stricken off by a scraper, the cut isolation film 6 is laid on the laid release cloth 5 flatly without lap joint, and the cut air felt 7 is laid on the laid isolation film 6 flatly without lap joint. All materials are laid into a whole block, cannot be spliced and cannot be folded.
The product 1 to be repaired, which is paved with the materials, is covered by a vacuum bag 8, the sealing joint of the vacuum bag 8 is sealed by sealing plaster 9, a vacuum pumping device (such as a vacuum pump) is connected to the connecting port, the vacuum pipe of the vacuum pumping device is directly inserted into the connecting port, then the vacuum pumping is started until the negative pressure in the vacuum pumping device is less than-0.095 MPa, and the vacuum bag 8 is heated and pressurized according to the requirements of a resin curing system to cure the product 1 to be repaired. The bubbles in the carbon fiber prepreg 3 and the resin can be removed by vacuumizing, and the porosity of the product 1 is reduced; the carbon fiber prepreg 3 can be firmly attached to the surface of the product 1 through negative pressure, so that the adhesive force of the carbon fiber prepreg 3 on the surface of the product 1 is improved; the redundant resin can be pumped away by utilizing vacuum, the fiber volume content of the product 1 is improved, and the size accuracy of the product 1 is ensured; can ensure that the resin can uniformly permeate into the fiber, avoids the surface of the product 1 from lacking glue, and is beneficial to the coating of the subsequent product 1.
S3, post-repair treatment stage:
and after the curing is finished, closing the vacuumizing device, opening the vacuum bag, and sequentially removing the demolding auxiliary materials to obtain the repaired product. The repaired product is then further optimized to remove excess resin flash from the surface of the repaired product, typically by hand sanding the flash with 120 grit sandpaper.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A method for repairing the woven texture of the appearance of a carbon fiber composite material is characterized by comprising the following steps: comprises that
S1, repair preparation stage:
(1) according to the defects of the appearance of the product to be repaired, a repairing area needing to be repaired is divided on the surface of the carbon fiber composite material,
(2) preparing resin, carbon fiber prepreg, repair auxiliary material and a vacuum bag, wherein the resin is in the same resin system with the resin used by the product to be repaired, the carbon fiber prepreg is the same as the original carbon fiber prepreg on the surface of the product to be repaired in model, and the carbon fiber prepreg, the repair auxiliary material and the vacuum bag are all cut to a set shape;
s2, repairing operation stage:
sequentially coating a first layer of resin, laying carbon fiber prepreg, coating a second layer of resin and laying a demolding auxiliary material on the repair area, coating a product to be repaired with a vacuum bag, sealing, vacuumizing the vacuum bag, and heating and pressurizing the vacuum bag to cure the product to be repaired;
s3, post-repair treatment stage:
and after the solidification is finished, opening the vacuum bag, and removing the demolding auxiliary material to obtain a repaired product.
2. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 1, wherein: when the vacuum bag is vacuumized, the vacuum bag is vacuumized until the negative pressure in the vacuum bag is less than-0.095 MPa.
3. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 1, wherein: and after the repaired product is obtained, removing the excessive resin flash on the surface of the product.
4. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 1, wherein: the division of the repair area includes: and searching the boundary of the texture region containing the texture defects, wherein the boundary is positioned at a joint line of the product to be detected or a position where texture splicing and bending occur, and defining the whole range in the boundary of the texture region as a repair region.
5. The method for restoring woven texture to the appearance of carbon fiber composite materials according to claim 4, wherein: when dividing the repair area, if the defect extends across the boundaries of the plurality of texture areas, each texture area is determined as a repair area and is repaired separately.
6. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 1, wherein: in S1, the repair area surface is pretreated: and (3) roughly polishing the divided repair area, comprising: and (3) polishing the repair area to the surface of the repair area by using 120-400-mesh sand paper in a mechanical and/or manual mode until the dyne value of the repair area is not less than 30.
7. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 6, wherein: cleaning the sanded repair area prior to applying the first layer of resin, comprising: and blowing the polished repair area by using compressed air, wiping the repair area by using dust-free cloth stained with alcohol, and standing and airing the repair area.
8. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 1, wherein: in the repair preparation stage, the shape and the size of the carbon fiber prepreg are cut to be consistent with those of the repair area.
9. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 1, wherein: the demoulding auxiliary material comprises demoulding cloth, an isolating film and an air felt, and the cut demoulding cloth, the isolating film and the air felt can completely cover the cut carbon fiber prepreg cloth.
10. The method for restoring woven texture to the appearance of carbon fiber composite material according to claim 9, wherein: the release cloth is laid on the second layer of resin in a flat and lap-free manner and completely covers the second layer of resin, the isolation film is laid on the release cloth in a flat and lap-free manner, and the air felt is laid on the isolation film in a flat and lap-free manner.
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| CN202111091086.XA CN113942249A (en) | 2021-09-17 | 2021-09-17 | Method for repairing woven texture of carbon fiber composite material appearance |
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| CN202111091086.XA CN113942249A (en) | 2021-09-17 | 2021-09-17 | Method for repairing woven texture of carbon fiber composite material appearance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115071167A (en) * | 2022-05-11 | 2022-09-20 | 江苏常友环保科技股份有限公司 | Rapid repairing method for epoxy glass fiber reinforced plastic product |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102649342A (en) * | 2011-02-24 | 2012-08-29 | 成都飞机工业（集团）有限责任公司 | Patching and repairing method for local damage of carbon-fiber reinforced resin base laminating plate |
| CN106985416A (en) * | 2017-06-01 | 2017-07-28 | 江苏恒神股份有限公司 | The process of autoclave molding carbon fiber product |
| CN112848417A (en) * | 2020-11-27 | 2021-05-28 | 黄冈格罗夫氢能汽车有限公司 | Crack repair method for carbon fiber composite product of hydrogen fuel cell automobile |
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2021
- 2021-09-17 CN CN202111091086.XA patent/CN113942249A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102649342A (en) * | 2011-02-24 | 2012-08-29 | 成都飞机工业（集团）有限责任公司 | Patching and repairing method for local damage of carbon-fiber reinforced resin base laminating plate |
| CN106985416A (en) * | 2017-06-01 | 2017-07-28 | 江苏恒神股份有限公司 | The process of autoclave molding carbon fiber product |
| CN112848417A (en) * | 2020-11-27 | 2021-05-28 | 黄冈格罗夫氢能汽车有限公司 | Crack repair method for carbon fiber composite product of hydrogen fuel cell automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115071167A (en) * | 2022-05-11 | 2022-09-20 | 江苏常友环保科技股份有限公司 | Rapid repairing method for epoxy glass fiber reinforced plastic product |
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