CN109203519A - Siding reinforcement co-curing forming technique - Google Patents
Siding reinforcement co-curing forming technique Download PDFInfo
- Publication number
- CN109203519A CN109203519A CN201810915822.0A CN201810915822A CN109203519A CN 109203519 A CN109203519 A CN 109203519A CN 201810915822 A CN201810915822 A CN 201810915822A CN 109203519 A CN109203519 A CN 109203519A
- Authority
- CN
- China
- Prior art keywords
- siding
- reinforcement
- forming technique
- curing
- vacuum
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000002787 reinforcement Effects 0.000 title claims abstract description 23
- 239000003292 glue Substances 0.000 claims abstract description 29
- 238000000465 moulding Methods 0.000 claims abstract description 25
- 239000000463 material Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims description 29
- 239000011347 resin Substances 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000004744 fabric Substances 0.000 claims description 9
- 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 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 238000007654 immersion Methods 0.000 claims description 3
- 229920003192 poly(bis maleimide) Polymers 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 18
- 238000004519 manufacturing process Methods 0.000 abstract description 15
- 239000000835 fiber Substances 0.000 abstract description 11
- 239000002131 composite material Substances 0.000 abstract description 9
- 230000008676 import Effects 0.000 abstract description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 4
- 239000000084 colloidal system Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012761 high-performance material Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000001721 transfer moulding Methods 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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
- B29C70/443—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding and impregnating by vacuum or injection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2007/00—Flat articles, e.g. films or sheets
- B29L2007/002—Panels; Plates; Sheets
Abstract
The present invention relates to carbon fibre composite complexity Material Stiffened Panel preparation technical fields, are that a kind of inexpensive co-curing vacuum of complicated siding reinforcement imports forming technique specifically.1, siding reinforcement co-curing forming technique, it is characterised in that: the following steps are included: step 1: the recess prepreg laying on molding die goes out rib, and pre-compacted；Step 2: in the surface laying covering of molding die, and being bonded covering with rib, obtain precast body；Step 3: step 2 being obtained into precast body and is packed into vacuum bag, and imports the injecting glue for completing precast body in vacuum, then curing molding.The present invention improves the production technology of siding reinforcement, it realizes and imports the structure that forming technique processes complicated siding reinforcement using vacuum, improve production efficiency, reduce the process costs of equipment cost and production, further, quality, mechanical property, the reliability of product are all guaranteed.
Description
Technical field
The present invention relates to carbon fibre composite complexity Material Stiffened Panel preparation technical fields, are a kind of complexity specifically
The inexpensive co-curing vacuum of siding reinforcement imports forming technique.
Background technique
Carbon fibre composite is widely used in aerospace, rail traffic, new as a kind of novel high performance material
The high-tech areas such as energy automobile.Currently, the moulding process for preparing carbon fibre composite plate mainly have prepreg-autoclave at
Type technique, die press technology for forming, manual pasting forming process, resin transfer molding technique, vacuum guiding and forming technique etc..
Vacuum guiding and forming technique (Vacuum Assisted Resin Infusion) abbreviation VARI moulding process, is one
Kind low cost composite material large-scale product forming technique, it be under vacuum conditions (atmospheric pressure) exclude fiber in advance at
Gas in type body realizes the dipping to preform, and in certain cure profile condition by the flowing of resin, infiltration
Lower carry out curing molding, forms the process of certain resin/fiber ratio.
During the conventional molding resin penetration process of VARI, resin is under the action of vacuum pressure, from glue feeding channel
Import vacuum bag in precast body and infiltrate precast body.Not plus the composite product thickness fluctuation of resin flowing control is big, fine
Tie up that volume fraction is low, be embodied in it is partially thick near glue feeding channel, plastic emitting passage proximate it is partially thin.In addition, being tied for complexity
Structure, simply using VARI technique, to be easy to appear resin suction uneven, and the defects of poor glue occurs in part.Which also limits its
Application on complicated aerospace component.
Siding reinforced structure is a kind of relatively common structure type of aerospace field, traditional carbon fibre composite
Siding reinforced structure is all made of the laggard solidification of hot-press tank molding of prepreg laying, and process costs are expensive, and are easy to become there are rib
The problems such as shape, laying low efficiency.
Summary of the invention
In view of the deficiencies of the prior art, the present invention improves the production technology of siding reinforcement, realizes using true
Sky imports the structure that forming technique processes complicated siding reinforcement, improves production efficiency, reduces the work of equipment cost and production
Skill cost, further, quality, mechanical property, the reliability of product are all guaranteed.
Technical scheme is as follows:
Siding reinforcement co-curing forming technique, it is characterised in that: the following steps are included:
Step 1: the recess prepreg laying on molding die goes out rib, and pre-compacted；
Step 2: in the surface laying covering of molding die, and being bonded covering with rib, obtain precast body；
Step 3: step 2 being obtained into precast body and molding die is packed into vacuum bag, and is imported by vacuum and completes precast body
Injecting glue, then curing molding.
Further, the end of the covering in the step 2 is additionally provided with end frame, and the end frame uses prepreg laying
Preparation.
Further, the covering in the step 2 is dry state fabric.
Further, at least one side of the dry state fabric is coated with setting agent.
Further, the resin of the resin of the prepreg and injecting glue is identical resin.
Further, glue used in the injecting glue in the step 3 is matched by resin and curing agent, and has been matched
Glue after passes through vacuum defoamation.
Further, 0.5 ~ 2 hour time of the vacuum defoamation.
Further, the end frame is spread using multiple the 0 ° unidirectional pre-immersion materials cut by isotropism
It puts, precompressed and is cut after laying.
Further, the resin of the prepreg is epoxy resin or bismaleimide resin.
The invention has the benefit that
The present invention imports the structure that forming technique processes complicated siding reinforcement using vacuum, improves production efficiency, reduces and set
The process costs of standby cost and production, further, quality, mechanical property, the reliability of product are all guaranteed.
Detailed description of the invention
Fig. 1 is production technology flow chart of the invention.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Flow chart as shown in Figure 1, siding reinforcement co-curing forming technique, it is characterised in that: the following steps are included:
Step 1: the recess prepreg laying on molding die goes out rib, and pre-compacted；
Step 2: in the surface laying covering of molding die, and being bonded covering with rib, obtain precast body；
Step 3: step 2 is obtained into precast body and molding die and is packed into vacuum bag, after vacuum bag encapsulation, to system into
Row vacuumizes, and vacuum degree is not less than -0.095MPa；System vacuum penetration inspection is carried out simultaneously, and is imported and completed in advance by vacuum
The injecting glue of body processed, then curing molding.
Exist to overcome autoclave process in the prior art at high cost and directly adopt the processing of vacuum leading-in technique
Product defects, the present invention improves the production technology of siding reinforcement class product, in advance using prepreg in shaping mould
The recess laying of tool goes out rib, and carries out pre-compacted, and in order to guarantee the effect of pre-compacted, operator can use idler wheel rolling
Beading item reduces fiber rebound, improves fiber volume fraction and the thickness uniformity between composite material, reduces porosity, also
Molding die and rib can be put into vacuum bag in the process of rib, periodically carry out vacuumizing heating pre-compacted and
Sizing, can further guarantee the dimensional accuracy of product；Then in molding die surface laying covering, finally by precast body and
Molding die is packed into vacuum bag, beats vacuum bag, vacuum bag is avoided to build bridge, the pleated portions that so-called i.e. vacuum bagging skin of building bridge is formed
Position, will guarantee that vacuum bag without arch formation, if vacuum bag is built bridge, will lead to local resin pocket in process of production,
Molding building thickness is overproof, influences the quality of product, and can also have an impact to the vacuum degree of vacuum bag, carries out injecting glue, due to
Rib position is completed the process using prepreg, and during injecting glue, the colloid of injection only flows on covering, not will receive
The influence of rib shape, overcome directly adopt vacuum bag injecting glue form existing colloid can not complete wetting rib the problem of,
It ensure that the quality of product.
Further, the end of the covering in the step 2 is equipped with end frame, and the end frame uses prepreg laying system
Standby, the both ends of complex structural member then hold frame also to carry out laying preparation using prepreg in advance, i.e., in step 3 as held frame if it exists
Injecting glue during, the colloid of injection is only flowed in covering, and flow process not will receive the influence of complex profile, ensure that injecting glue
Reliability.
Further, the covering in the step 2 is dry state fabric, and dry state fabric is the carbon fiber under normal condition
Or carbon fiber preform, it is laid on the surface of molding die.
Further, at least one side of the dry state fabric is coated with setting agent, according to the needs of technique, Wo Menke
All to uniformly spray setting agent in one side or tow sides, spraying setting agent is for protecting the shape of dry state fabric
It holds, avoids the covering in injecting glue process or laid course from irregular change occur, so as to obtain the stable production of quality
Product to produce in batches, and further, the setting agent sprayed must match with resin, and the amount sprayed
It is appropriate, its permeability is not influenced for reference with the dry state fabric after having sprayed, guarantees that colloid can be complete during injecting glue
Infiltrate entire covering.
Further, the resin of the resin of the prepreg and injecting glue is identical resin, guarantees product
Consistency, and be also beneficial to guarantee covering and rib and hold the connection reliability of frame junction.
Further, glue used in the injecting glue in the step 3 is matched by resin and curing agent, and has been matched
Glue after passes through vacuum defoamation.
Further, 0.5 ~ 2 hour time of the vacuum defoamation, configured glue is vacuum-treated, is subtracted
The defect of concentrated voids, can locally occur then to avoid product after injecting glue in bubble in few glue, guarantee product quality, further
, the temperature of fluid reservoir when vacuum defoamation is not less than the permeability of resin, guarantees that resin carries out in the state of compared with low viscosity
Deaeration processing.
Further, the end frame is spread using multiple the 0 ° unidirectional pre-immersion materials cut by isotropism
It puts, precompressed and is cut after laying, i.e., according to 0 °, 45 °, 90 ° and -45 ° progress laying, and precompressed, the producer of above-mentioned end frame
Method can reduce fiber rebound, improve the fiber volume fraction and the thickness uniformity of composite product, reduce voidage.
Further, the resin of the prepreg is epoxy resin or bismaleimide resin.
The invention has the benefit that
The present invention imports the structure that forming technique processes complicated siding reinforcement using vacuum, improves production efficiency, reduces and set
The process costs of standby cost and production, further, quality, mechanical property, the reliability of product are all guaranteed.
Claims (9)
1. siding reinforcement co-curing forming technique, it is characterised in that: the following steps are included:
Step 1: the recess prepreg laying on molding die goes out rib, and pre-compacted；
Step 2: in the surface laying covering of molding die, and being bonded covering with rib, obtain precast body；
Step 3: step 2 being obtained into precast body and molding die is packed into vacuum bag, and is imported by vacuum and completes precast body
Injecting glue, then curing molding.
2. siding reinforcement co-curing forming technique according to claim 1, it is characterised in that: the illiteracy in the step 2
The end of skin is additionally provided with end frame, and the end frame is prepared using prepreg laying.
3. siding reinforcement co-curing forming technique according to claim 1, it is characterised in that: the illiteracy in the step 2
Skin is dry state fabric.
4. siding reinforcement co-curing forming technique according to claim 3, it is characterised in that: the dry state fabric is extremely
It is few to be coated with setting agent on one side.
5. siding reinforcement co-curing forming technique according to claim 1, it is characterised in that: the tree of the prepreg
The resin of rouge and injecting glue is identical resin.
6. siding reinforcement co-curing forming technique according to claim 1, it is characterised in that: the note in the step 3
Glue used in glue is matched by resin and curing agent, and the glue after the completion of proportion passes through vacuum defoamation.
7. siding reinforcement co-curing forming technique according to claim 6, it is characterised in that: the vacuum defoamation when
Between 0.5 ~ 2 hour.
8. siding reinforcement co-curing forming technique according to claim 2, it is characterised in that: the end frame is using cutting
Multiple good 0 ° unidirectional pre-immersion materials precompressed and are cut by isotropism progress laying, after laying.
9. according to claim 1 or siding reinforcement co-curing forming technique described in 5, it is characterised in that: the prepreg
Resin is epoxy resin or bismaleimide resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810915822.0A CN109203519A (en) | 2018-08-13 | 2018-08-13 | Siding reinforcement co-curing forming technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810915822.0A CN109203519A (en) | 2018-08-13 | 2018-08-13 | Siding reinforcement co-curing forming technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109203519A true CN109203519A (en) | 2019-01-15 |
Family
ID=64988382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810915822.0A Pending CN109203519A (en) | 2018-08-13 | 2018-08-13 | Siding reinforcement co-curing forming technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109203519A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941874A (en) * | 2020-07-24 | 2020-11-17 | 中国航空工业集团公司沈阳飞机设计研究所 | Integrated forming method for composite material reinforced pipeline |
| CN112848372A (en) * | 2020-12-31 | 2021-05-28 | 安徽佳力奇先进复合材料科技股份公司 | Distributed heating forming process for composite material |
| CN113478864A (en) * | 2021-07-02 | 2021-10-08 | 南京科技职业学院 | Method for manufacturing double-curved-surface impeller |
| CN113733601A (en) * | 2021-08-24 | 2021-12-03 | 成都飞机工业（集团）有限责任公司 | Flow guiding method for VARI liquid forming composite material reinforced wall plate |
| CN114589980A (en) * | 2022-01-28 | 2022-06-07 | 江苏三强复合材料有限公司 | Structure heat-proof integrated double-faced skin grid structure and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990940A (en) * | 2012-12-05 | 2013-03-27 | 中国商用飞机有限责任公司 | Liquid forming device and liquid forming method for composite material stiffened plate |
| CN104527085A (en) * | 2014-12-05 | 2015-04-22 | 航天特种材料及工艺技术研究所 | Composite multi-closed-chamber thick-walled box beam and integral moulding method |
| CN107521124A (en) * | 2017-07-31 | 2017-12-29 | 江苏恒神股份有限公司 | Carbon fiber dual platen reinforced structure part and its manufacture method |
-
2018
- 2018-08-13 CN CN201810915822.0A patent/CN109203519A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990940A (en) * | 2012-12-05 | 2013-03-27 | 中国商用飞机有限责任公司 | Liquid forming device and liquid forming method for composite material stiffened plate |
| CN104527085A (en) * | 2014-12-05 | 2015-04-22 | 航天特种材料及工艺技术研究所 | Composite multi-closed-chamber thick-walled box beam and integral moulding method |
| CN107521124A (en) * | 2017-07-31 | 2017-12-29 | 江苏恒神股份有限公司 | Carbon fiber dual platen reinforced structure part and its manufacture method |
Non-Patent Citations (1)
| Title |
|---|
| 唐见茂著: "《绿色复合材料》", 31 December 2016, 北京：中国铁道出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111941874A (en) * | 2020-07-24 | 2020-11-17 | 中国航空工业集团公司沈阳飞机设计研究所 | Integrated forming method for composite material reinforced pipeline |
| CN112848372A (en) * | 2020-12-31 | 2021-05-28 | 安徽佳力奇先进复合材料科技股份公司 | Distributed heating forming process for composite material |
| CN113478864A (en) * | 2021-07-02 | 2021-10-08 | 南京科技职业学院 | Method for manufacturing double-curved-surface impeller |
| CN113733601A (en) * | 2021-08-24 | 2021-12-03 | 成都飞机工业（集团）有限责任公司 | Flow guiding method for VARI liquid forming composite material reinforced wall plate |
| CN114589980A (en) * | 2022-01-28 | 2022-06-07 | 江苏三强复合材料有限公司 | Structure heat-proof integrated double-faced skin grid structure and preparation method thereof |
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Application publication date: 20190115 |
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