CN111113950A - Bag pressing forming process of carbon fiber product - Google Patents
Bag pressing forming process of carbon fiber product Download PDFInfo
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- CN111113950A CN111113950A CN202010004181.0A CN202010004181A CN111113950A CN 111113950 A CN111113950 A CN 111113950A CN 202010004181 A CN202010004181 A CN 202010004181A CN 111113950 A CN111113950 A CN 111113950A
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- carbon fiber
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- bag
- mold body
- silica gel
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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
- B29C70/30—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
- B29C70/345—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 matched moulds
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a bag pressing forming process of a carbon fiber product, and belongs to the technical field of machinery. It has solved prior art and has had the poor problem of stability. The bag pressing forming process of the carbon fiber product comprises the following steps: A. preparing; B. checking; C. die assembly: the mold comprises an upper mold body and a lower mold body, a closed molding cavity is formed between the upper mold body and the lower mold body after the upper mold body and the lower mold body are buckled, carbon fiber cloth components are laid on the inner sides of the upper mold body and the lower mold body, after the carbon fiber cloth components are laid, a silica gel air bag is placed into the mold, a nylon sealing bag is placed into the silica gel air bag, and then the upper mold body and the lower mold body are buckled; D. heating; E. and (5) molding. The bag pressing forming process of the carbon fiber product has high stability.
Description
Technical Field
The invention belongs to the technical field of machinery, and relates to a bag pressing forming process of a carbon fiber product.
Background
The bag-press molding process is one of the earliest and most widely used processes for molding prepregs. The process comprises the steps of laying a fiber prefabricated part in a mold, covering the mold with a soft isolating film, curing the fiber prefabricated part under hot pressing, and forming a component with a certain structure by the material after a required curing period. The bag press forming can be divided into three types, including vacuum bag press forming, pressure bag press forming and autoclave forming.
The vacuum bag pressing method is to spread flexible rubber or plastic film on the prefabricated fiber part to form sealed space between the prefabricated fiber part and the mold, to heat the combined body inside the autoclave or hot box while vacuumizing the sealed space to form negative pressure for curing.
The atmospheric pressure can eliminate air in the resin, reduce air bubbles, remove redundant resin and enable the surface of the product to be more compact. Because the pressure generated by the vacuum bag pressing method is small, the vacuum bag pressing method is only suitable for resin systems with small influence on strength and density by pressure, such as epoxy resin and the like. In the case of phenol resins and the like, low-molecular substances are released during curing, and it is difficult to obtain a product having a dense structure by this method.
Disclosure of Invention
The invention aims to provide a bag-pressing forming process of a carbon fiber product with high stability aiming at the problems in the prior art.
The purpose of the invention can be realized by the following technical scheme:
the bag pressing and forming process of the carbon fiber product is characterized by comprising the following steps of:
A. preparing: selecting a mould matched with the product, and simultaneously preparing a silica gel air bag and a nylon sealing bag matched with the mould, wherein the product is cylindrical;
B. and (4) checking: detecting the die to check whether the die is complete and whether foreign matters exist;
C. die assembly: the mold comprises an upper mold body and a lower mold body, a closed molding cavity is formed between the upper mold body and the lower mold body after the upper mold body and the lower mold body are buckled, carbon fiber cloth components are laid on the inner sides of the upper mold body and the lower mold body, after the carbon fiber cloth components are laid, a silica gel air bag is placed into the mold, a nylon sealing bag is placed into the silica gel air bag, and then the upper mold body and the lower mold body are buckled;
D. heating: heating the die after die assembly, and extruding the carbon fiber cloth component by the silica gel air bag and the nylon envelope;
E. molding: and after the mold is heated for a set time constantly, the carbon fiber cloth assembly is cured and molded, the upper mold body is separated from the lower mold body, and then the silica gel air bag and the nylon sealing bag are taken out, and finally the molded carbon fiber product is obtained.
The forming process creatively implants the nylon sealing bag in the silica gel air bag, so that the two connected bag bodies have enough strength.
And after the carbon fiber cloth assembly is connected with the upper die body and the lower die body, the connected silica gel air bag and the nylon sealing bag are placed into a forming cavity.
After the upper die body and the lower die body are combined, the carbon fiber cloth component is extruded by the silica gel air bag, and the carbon fiber cloth component is in surface contact with the inner side of the die.
And (3) placing the matched die into corresponding heating equipment for heating, and keeping the heated die at the temperature for a set time to stably form a carbon fiber product by the carbon fiber cloth component.
In the above bag-press forming process for carbon fiber products, in the step B, if the mold is detected to be incomplete, the mold needs to be replaced.
In the above bag-pressing forming process of carbon fiber products, if a foreign matter is detected in the mold in the step B, the cleaning process is required to be performed in time.
The quality of the product can only be guaranteed by the complete and clean die.
In the bag-press molding process of the carbon fiber product, the inside of the mold is uniformly coated with a release agent after the step B.
The formed product can be stably separated from the mold through the mold release agent.
In the bag-pressing forming process of the carbon fiber product, the release agent is a water-based release agent, and the water-based release agent is uniformly coated on the inner side of the mold after the mold is heated to 30-60 ℃.
In the bag pressing and forming process of the carbon fiber product, the adhesive tape is adhered to the inner side of the mold after the water-based release agent is coated, and the release agent is coated to meet the requirement after the adhesive tape is easily torn off manually.
In the bag pressing and forming process of the carbon fiber product, the carbon fiber cloth component comprises an inner layer, a middle layer and an outer layer, the inner layer is in contact with the inner side surface of the mold, the outer layer is located on the side part of the inner layer, the middle layer is located between the inner layer and the outer layer, the inner layer is carbon fiber cloth, the middle layer is square cloth, and the outer layer is glass cloth.
The structure not only ensures the strength of the product, but also properly reduces the cost.
In the bag-pressing forming process of the carbon fiber product, the inner layer is 3K carbon fiber cloth.
In the bag-pressing forming process of the carbon fiber product, the outer layer is 18 # glass cloth.
In the bag pressing and forming process of the carbon fiber product, the initial temperature of the mold is 120-140 ℃, after mold closing, the mold is pressurized, the pressure value in a forming cavity is kept to be 3-5 Mpa, pressure is released after 3-5 minutes, the mold is kept warm for 30-45 minutes, the mold is opened after the mold is cooled to 80-95 ℃, and after the formed carbon fiber product is taken out, the mold is cleaned and a proper amount of mold release agent is wiped.
Compared with the prior art, this bag pressure forming technology of carbon fiber product is because the nylon envelope inlays in the silica gel air bag, can not only guarantee two bag body intensity like this, but also can make the stable contact between carbon cloth subassembly and the silica gel air bag, and its stability is than higher.
Meanwhile, the carbon fiber cloth component adopts a three-layer structure, so that the strength of the carbon fiber cloth component is effectively improved, the cost is properly reduced, and the carbon fiber cloth component has high practical value.
Detailed Description
Example one
The bag pressing forming process of the carbon fiber product comprises the following steps:
A. preparing: and selecting a mould matched with the product, and preparing a silica gel air bag and a nylon envelope matched with the mould.
B. And (4) checking: the mold is inspected to see if it is intact and has foreign matter.
And in the step B, if the mould is detected to be incomplete, the mould needs to be replaced.
And in the step B, if the foreign matters in the die are detected, the cleaning treatment is required to be carried out in time.
And B, uniformly coating a release agent on the inner side of the die after the step B.
The release agent is a water-based release agent, and the water-based release agent is uniformly coated on the inner side of the mold after the mold is heated to 30 ℃.
After the water-based release agent is coated, the adhesive tape is adhered to the inner side of the mold, and the release agent is coated to meet the requirement as the hand feeling is easy when the adhesive tape is manually torn off.
C. Die assembly: the mould includes die body and lower die body, goes up die body and forms confined shaping chamber between the two behind the die body lock, lays the carbon fiber cloth subassembly at last die body and lower die body inboard, treats that the carbon fiber cloth subassembly is laid and accomplishes the back, puts into the mould with the silica gel air pocket in, and the nylon envelope is put into the silica gel air pocket simultaneously in, then will go up die body and lower die body lock.
In this embodiment, the carbon fiber product is cylindrical, and the silica gel air bag is of an integrated structure.
When the carbon fiber product is the dysmorphism structure, the silica gel air pocket can adopt the sectional type structure, is convenient for like this between silica gel air pocket and the nylon air pocket be connected, also can conveniently demold simultaneously.
In this embodiment, the side of the cylindrical carbon fiber product to be molded has a circular tube communicating with it. Therefore, an auxiliary forming cavity matched with the circular tube is also arranged between the upper die body and the lower die body after the upper die body and the lower die body are buckled. In the step C, an additional carbon fiber cloth component is required to be laid at the auxiliary forming cavity, and the carbon fiber component is laid to form a structure matched with the circular tube.
In order to ensure that the interior of the circular tube is provided with a through hole, the carbon fiber assembly at the auxiliary forming cavity protrudes out of the upper die body and the lower die by 5-10 mm.
Certainly, the silica gel air bag also needs to be placed in the auxiliary forming cavity, in order to accurately control the aperture of the circular tube, the metal pipe can be used for replacing the silica gel air bag, the metal pipe can be heated to about 30 ℃ in actual operation, then the carbon fiber cloth with a certain thickness is wound on the surface of the metal pipe with a certain temperature, and then the mold is closed according to the step C of the embodiment.
The carbon fiber cloth component comprises an inner layer, an intermediate layer and an outer layer, the inner layer is in contact with the inner side face of the mold, the outer layer is located on the side portion of the inner layer, the intermediate layer is located between the inner layer and the outer layer, the inner layer is carbon fiber cloth, the intermediate layer is square cloth, and the outer layer is glass cloth.
The inner layer is 3K carbon fiber cloth.
The outer layer is 18-size glass cloth.
D. Heating: and heating the die after die assembly, and extruding the carbon fiber cloth component by the silica gel air bag and the nylon envelope.
E. Molding: and after the mold is heated for a set time constantly, the carbon fiber cloth assembly is cured and molded, the upper mold body is separated from the lower mold body, and then the silica gel air bag and the nylon sealing bag are taken out, and finally the molded carbon fiber product is obtained.
The initial temperature of the mold is 120 ℃, after the mold is closed, the mold is pressurized, the pressure value in a molding cavity is kept to be 3Mpa, the pressure is released after 3 minutes, the mold is kept warm for 30 minutes, the mold is opened after the mold is cooled to 80 ℃, and after a molded carbon fiber product is taken out, the mold is cleaned and a proper amount of release agent is wiped.
The forming process creatively implants the nylon sealing bag in the silica gel air bag, so that the two connected bag bodies have enough strength.
And after the carbon fiber cloth assembly is connected with the upper die body and the lower die body, the connected silica gel air bag and the nylon sealing bag are placed into a forming cavity.
After the upper die body and the lower die body are combined, the carbon fiber cloth component is extruded by the silica gel air bag, and the carbon fiber cloth component is in surface contact with the inner side of the die.
And (3) placing the matched die into corresponding heating equipment for heating, and keeping the heated die at the temperature for a set time to stably form a carbon fiber product by the carbon fiber cloth component.
And taking out the carbon fiber product from the mold, and taking out the silica gel air bag and the nylon sealing bag from the carbon fiber product to obtain a finished product.
Example two
The bag pressing forming process of the carbon fiber product comprises the following steps:
A. preparing: and selecting a mould matched with the product, and preparing a silica gel air bag and a nylon envelope matched with the mould.
B. And (4) checking: the mold is inspected to see if it is intact and has foreign matter.
And in the step B, if the mould is detected to be incomplete, the mould needs to be replaced.
And in the step B, if the foreign matters in the die are detected, the cleaning treatment is required to be carried out in time.
And B, uniformly coating a release agent on the inner side of the die after the step B.
The release agent is a water-based release agent, and the water-based release agent is uniformly coated on the inner side of the mold after the mold is heated to 60 ℃.
After the water-based release agent is coated, the adhesive tape is adhered to the inner side of the mold, and the release agent is coated to meet the requirement as the hand feeling is easy when the adhesive tape is manually torn off.
C. Die assembly: the mould includes die body and lower die body, goes up die body and forms confined shaping chamber between the two behind the die body lock, lays the carbon fiber cloth subassembly at last die body and lower die body inboard, treats that the carbon fiber cloth subassembly is laid and accomplishes the back, puts into the mould with the silica gel air pocket in, and the nylon envelope is put into the silica gel air pocket simultaneously in, then will go up die body and lower die body lock.
In this embodiment, the carbon fiber product is cylindrical, and the silica gel air bag is of an integrated structure.
When the carbon fiber product is the dysmorphism structure, the silica gel air pocket can adopt the sectional type structure, is convenient for like this between silica gel air pocket and the nylon air pocket be connected, also can conveniently demold simultaneously.
The carbon fiber cloth component comprises an inner layer, an intermediate layer and an outer layer, the inner layer is in contact with the inner side face of the mold, the outer layer is located on the side portion of the inner layer, the intermediate layer is located between the inner layer and the outer layer, the inner layer is carbon fiber cloth, the intermediate layer is square cloth, and the outer layer is glass cloth.
The inner layer is 3K carbon fiber cloth.
The outer layer is 18-size glass cloth.
D. Heating: and heating the die after die assembly, and extruding the carbon fiber cloth component by the silica gel air bag and the nylon envelope.
E. Molding: and after the mold is heated for a set time constantly, the carbon fiber cloth assembly is cured and molded, the upper mold body is separated from the lower mold body, and then the silica gel air bag and the nylon sealing bag are taken out, and finally the molded carbon fiber product is obtained.
The initial temperature of the mold is 140 ℃, after the mold is closed, the mold is pressurized, the pressure value in a molding cavity is kept to be 5Mpa, the pressure is released after 5 minutes, the mold is kept at the temperature for 45 minutes, the mold is opened after the temperature of the mold is reduced to 95 ℃, and after a molded carbon fiber product is taken out, the mold is cleaned and a proper amount of release agent is wiped.
The forming process creatively implants the nylon sealing bag in the silica gel air bag, so that the two connected bag bodies have enough strength.
And after the carbon fiber cloth assembly is connected with the upper die body and the lower die body, the connected silica gel air bag and the nylon sealing bag are placed into a forming cavity.
After the upper die body and the lower die body are combined, the carbon fiber cloth component is extruded by the silica gel air bag, and the carbon fiber cloth component is in surface contact with the inner side of the die.
And (3) placing the matched die into corresponding heating equipment for heating, and keeping the heated die at the temperature for a set time to stably form a carbon fiber product by the carbon fiber cloth component.
And taking out the carbon fiber product from the mold, and taking out the silica gel air bag and the nylon sealing bag from the carbon fiber product to obtain a finished product.
EXAMPLE III
The bag pressing forming process of the carbon fiber product comprises the following steps:
A. preparing: and selecting a mould matched with the product, and preparing a silica gel air bag and a nylon envelope matched with the mould.
B. And (4) checking: the mold is inspected to see if it is intact and has foreign matter.
And in the step B, if the mould is detected to be incomplete, the mould needs to be replaced.
And in the step B, if the foreign matters in the die are detected, the cleaning treatment is required to be carried out in time.
And B, uniformly coating a release agent on the inner side of the die after the step B.
The release agent is a water-based release agent, and the water-based release agent is uniformly coated on the inner side of the mold after the mold is heated to 40 ℃.
After the water-based release agent is coated, the adhesive tape is adhered to the inner side of the mold, and the release agent is coated to meet the requirement as the hand feeling is easy when the adhesive tape is manually torn off.
C. Die assembly: the mould includes die body and lower die body, goes up die body and forms confined shaping chamber between the two behind the die body lock, lays the carbon fiber cloth subassembly at last die body and lower die body inboard, treats that the carbon fiber cloth subassembly is laid and accomplishes the back, puts into the mould with the silica gel air pocket in, and the nylon envelope is put into the silica gel air pocket simultaneously in, then will go up die body and lower die body lock.
In this embodiment, the carbon fiber product is cylindrical, and the silica gel air bag is of an integrated structure.
When the carbon fiber product is the dysmorphism structure, the silica gel air pocket can adopt the sectional type structure, is convenient for like this between silica gel air pocket and the nylon air pocket be connected, also can conveniently demold simultaneously.
The carbon fiber cloth component comprises an inner layer, an intermediate layer and an outer layer, the inner layer is in contact with the inner side face of the mold, the outer layer is located on the side portion of the inner layer, the intermediate layer is located between the inner layer and the outer layer, the inner layer is carbon fiber cloth, the intermediate layer is square cloth, and the outer layer is glass cloth.
The inner layer is 3K carbon fiber cloth.
The outer layer is 18-size glass cloth.
D. Heating: and heating the die after die assembly, and extruding the carbon fiber cloth component by the silica gel air bag and the nylon envelope.
E. Molding: and after the mold is heated for a set time constantly, the carbon fiber cloth assembly is cured and molded, the upper mold body is separated from the lower mold body, and then the silica gel air bag and the nylon sealing bag are taken out, and finally the molded carbon fiber product is obtained.
The initial temperature of the mold is 130 ℃, after the mold is closed, the mold is pressurized, the pressure value in a molding cavity is kept to be 4Mpa, the pressure is released after 4 minutes, the mold is kept warm for 41 minutes, the mold is opened after the mold is cooled to 85 ℃, and after a molded carbon fiber product is taken out, the mold is cleaned and a proper amount of release agent is wiped.
The forming process creatively implants the nylon sealing bag in the silica gel air bag, so that the two connected bag bodies have enough strength.
And after the carbon fiber cloth assembly is connected with the upper die body and the lower die body, the connected silica gel air bag and the nylon sealing bag are placed into a forming cavity.
After the upper die body and the lower die body are combined, the carbon fiber cloth component is extruded by the silica gel air bag, and the carbon fiber cloth component is in surface contact with the inner side of the die.
And (3) placing the matched die into corresponding heating equipment for heating, and keeping the heated die at the temperature for a set time to stably form a carbon fiber product by the carbon fiber cloth component.
And taking out the carbon fiber product from the mold, and taking out the silica gel air bag and the nylon sealing bag from the carbon fiber product to obtain a finished product.
Claims (10)
1. The bag pressing and forming process of the carbon fiber product is characterized by comprising the following steps of:
A. preparing: selecting a mould matched with the product, and simultaneously preparing a silica gel air bag and a nylon sealing bag matched with the mould, wherein the product is cylindrical;
B. and (4) checking: detecting the die to check whether the die is complete and whether foreign matters exist;
C. die assembly: the mold comprises an upper mold body and a lower mold body, a closed molding cavity is formed between the upper mold body and the lower mold body after the upper mold body and the lower mold body are buckled, carbon fiber cloth components are laid on the inner sides of the upper mold body and the lower mold body, after the carbon fiber cloth components are laid, a silica gel air bag is placed into the mold, a nylon sealing bag is placed into the silica gel air bag, and then the upper mold body and the lower mold body are buckled;
D. heating: heating the die after die assembly, and extruding the carbon fiber cloth component by the silica gel air bag and the nylon envelope;
E. molding: and after the mold is heated for a set time constantly, the carbon fiber cloth assembly is cured and molded, the upper mold body is separated from the lower mold body, and then the silica gel air bag and the nylon sealing bag are taken out, and finally the molded carbon fiber product is obtained.
2. A bag-and-press molding process for carbon fiber products as claimed in claim 1, wherein the mold needs to be replaced if the mold is detected to be incomplete in the step B.
3. A bag-and-press molding process for carbon fiber products as claimed in claim 2, wherein in the step B, if foreign matter is detected in the mold, cleaning is required in time.
4. A bag-in-press molding process for a carbon fiber product according to claim 3, wherein a release agent is uniformly coated on the inner side of the mold after the step B.
5. A bag-in-press molding process of a carbon fiber product as claimed in claim 4, wherein the mold release agent is a water-based mold release agent, and the mold is heated to 30-60 ° fOAnd C, uniformly coating the water-based release agent on the inner side of the mold.
6. A bag-pressure forming process for carbon fiber products as claimed in claim 5, wherein the adhesive tape is adhered to the inner side of the mold after the application of the aqueous release agent, and the release agent is applied to the mold as evidenced by a light hand feeling when the adhesive tape is manually torn off.
7. A bag-pressing molding process for carbon fiber products as claimed in claim 6, wherein the carbon fiber cloth assembly comprises an inner layer, an intermediate layer and an outer layer, the inner layer is in contact with the inner side surface of the mold, the outer layer is located on the side portion of the inner layer, the intermediate layer is located between the inner layer and the outer layer, the inner layer is carbon fiber cloth, the intermediate layer is checkered cloth, and the outer layer is glass cloth.
8. The bag-pressing molding process of a carbon fiber product as claimed in claim 7, wherein the inner layer is 3K carbon fiber cloth.
9. A bag-and-press molding process of a carbon fiber product as claimed in claim 8, wherein the outer layer is 18-gauge glass cloth.
10. A bag-in-press molding process of a carbon fiber product according to claim 9, wherein the initial temperature of the mold is 120 to 140 ℃OC, after die assembly, pressurizing the die, keeping the pressure value in the forming cavity to be 3-5 Mpa, releasing pressure after 3-5 minutes, keeping the temperature of the die for 30-45 minutes, and cooling the die to 80-95 minutesOAnd C, opening the mold, taking out the molded carbon fiber product, cleaning the mold and wiping a proper amount of release agent.
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CN113405369A (en) * | 2021-06-29 | 2021-09-17 | 东莞市正文机械有限公司 | Carbon fiber cold and hot integrated forming control method |
CN114619681A (en) * | 2022-01-24 | 2022-06-14 | 荆门劲驰汽车配件股份有限公司 | Method for preparing cavity type carbon fiber parts through integral forming |
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