CN106564198A - Method for bonding foam layer and aluminum alloy skin - Google Patents
Method for bonding foam layer and aluminum alloy skin Download PDFInfo
- Publication number
- CN106564198A CN106564198A CN201510653992.2A CN201510653992A CN106564198A CN 106564198 A CN106564198 A CN 106564198A CN 201510653992 A CN201510653992 A CN 201510653992A CN 106564198 A CN106564198 A CN 106564198A
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- CN
- China
- Prior art keywords
- aluminum alloy
- outer cover
- bonding plane
- alloy outer
- layer
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- 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.)
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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
Abstract
The method belongs to the manufacturing technical field of foam sandwich structure composite material aeronautical parts. According to the swelling problem frequently happening to the surfaces of the aluminum alloy skin foam sandwich structure aeronautical parts, a method for bonding a foam layer and aluminum alloy skin is provided. The method specifically includes the several steps of being to bond the aluminum alloy skin, bonding a foam core, and performing vacuum pumping and pressure maintaining.
Description
Technical field
The invention belongs to foam interlayer structure compound material aviation part manufacturing technology field, is related to the adhering method of a kind of froth bed and aluminum alloy outer cover.
Background technology
Aluminum alloy outer cover foamed sandwich structure class part is used widely on aircaft configuration with advantages such as lightweight, simple structures, the bonding quality and intensity of wherein aluminum alloy outer cover and foam core is the key of constitutional detail manufacture, and common adhesive technology (i.e. material technology description) is：Clean and be dried and treat bonding aluminum alloy outer cover surface and foam wicking surface, the J-241 adhesive of selection is uniformly painted on into aluminium alloy respectively and foam core treats bonding plane, then by both by glued after the alignment of corresponding benchmark, after solidification 24h under the conditions of 25 DEG C of ambient temperature, relative humidity no more than 75%.But the part manufactured by common adhesive technology method occurs the phenomenon that aluminum alloy outer cover surface local produces bulge in installation application process often, causes that part is directly scrapped or army's airplane fault is reprocessed.
The content of the invention
The technical problem of solution
The present invention is primarily directed to the bulge problem that aluminum alloy outer cover foamed sandwich structure aerospace structural component surface Jing often occurs, binding analysis bulge problem Producing reason have found a kind of process for improving aluminum alloy outer cover and foam core glue-joint strength, and can effectively solving aluminum alloy outer cover bulge problem by strength test test and installation application verification.
Technical scheme
In order to solve the technical problem of above-mentioned aluminum alloy outer cover foam sandwich structure part eyelid covering bulge, the present invention is achieved by the following technical solutions：A kind of adhering method of froth bed and aluminum alloy outer cover,
Step one, treat bonding plane with alcohol washes aluminum alloy outer cover, after ethanol volatilization treat on bonding plane, uniformly to brush one layer of J-241 adhesive in aluminum alloy outer cover, then treat bonding plane and brush one layer of J-241 adhesive again to guarantee that glass cloth is impregnated with completely in aluminum alloy outer cover by the paving of one layer of EW100 alkali-free glass cloth；
Step 2, treat bonding plane with alcohol washes foam core, treat that bonding plane uniformly brushes one layer of J-241 adhesive in foam core after ethanol volatilization, then it is glued after alignd above-mentioned ready aluminum alloy outer cover with foam core on the basis of respective edge line, glass cloth when glued on eyelid covering keeps smooth and corrugationless, forms multiple structure；
Step 3, glued good multiple structure is placed on flat plate mold, cover isolating membrane, airfelt, vacuum bag on the multiple structure successively, and mounting vacuum tube mouth, vacuum bag is sealed with sealant tape, the evacuation under conditions of 25 DEG C of ambient temperature, relative humidity are not more than 75%, 0.05MPa is reached, then pressurize 4 hours；
Vacuum bag, airfelt, isolating membrane are removed in release after the completion of step 4, pressurize, by the described multiple structure demoulding.
Beneficial effect
Compared with usual adhesive technology, the enforcement of technical solution of the present invention can effectively improve the glue-joint strength of aluminum alloy outer cover and foam core, thoroughly solve the problems, such as the constitutional detail aluminum alloy outer cover surface bulge.Intensity is improved：Shear strength (meansigma methodss) brings up to 1.78MPa from 1.45MPa, and peel strength value is improved to 16.66N 〃 mm/mm from 11.13N 〃 mm/mm；Trial-production part：Jing inspection surfacings, the bulge without any projection, and through installation part application verification, meet installation use requirement, the part rejection that causes because of eyelid covering bulge problem is thoroughly prevented and army's airplane fault has been reprocessed, effectively increase the workmanship of the constitutional detail, efficiency, apply satisfaction, and save cost.
Specific embodiment
A kind of adhering method of froth bed and aluminum alloy outer cover,
Step one, treat bonding plane with alcohol washes aluminum alloy outer cover, after ethanol volatilization treat on bonding plane, uniformly to brush one layer of J-241 adhesive in aluminum alloy outer cover, then treat bonding plane and brush one layer of J-241 adhesive again to guarantee that glass cloth is impregnated with completely in aluminum alloy outer cover by the paving of one layer of EW100 alkali-free glass cloth；
Step 2, treat bonding plane with alcohol washes foam core, treat that bonding plane uniformly brushes one layer of J-241 adhesive in foam core after ethanol volatilization, then it is glued after alignd above-mentioned ready aluminum alloy outer cover with foam core on the basis of respective edge line, glass cloth when glued on eyelid covering keeps smooth and corrugationless, forms multiple structure；
Step 3, glued good multiple structure is placed on flat plate mold, cover isolating membrane, airfelt, vacuum bag on the multiple structure successively, and mounting vacuum tube mouth, vacuum bag is sealed with sealant tape, the evacuation under conditions of 25 DEG C of ambient temperature, relative humidity are not more than 75%, 0.05MPa is reached, then pressurize 4 hours；
Vacuum bag, airfelt, isolating membrane are removed in release after the completion of step 4, pressurize, by the described multiple structure demoulding.
Especially, isolating membrane is have hole isolating membrane.
Claims (2)
1. the adhering method of a kind of froth bed and aluminum alloy outer cover, it is characterised in that：
Step one, treat bonding plane with alcohol washes aluminum alloy outer cover, in aluminum after ethanol volatilization
Alloy eyelid covering treats one layer of J-241 adhesive is uniformly brushed on bonding plane, then by one layer of EW100
Alkali-free glass cloth paving is treated bonding plane in aluminum alloy outer cover and brushes one layer of J-241 adhesive again
Guarantee that glass cloth is impregnated with completely；
Step 2, treat bonding plane with alcohol washes foam core, in foam core after ethanol volatilization
Treat that bonding plane uniformly brushes one layer of J-241 adhesive, then by above-mentioned ready aluminium alloy
Eyelid covering is glued after being alignd on the basis of respective edge line with foam core, glass when glued on eyelid covering
Cloth keeps smooth and corrugationless, forms multiple structure；
Step 3, glued good multiple structure is placed on flat plate mold, in the multiple structure
On cover isolating membrane, airfelt, vacuum bag, and mounting vacuum tube mouth successively, use sealant tape
Sealing vacuum bag, the evacuation under conditions of 25 DEG C of ambient temperature, relative humidity are not more than 75%,
0.05MPa is reached, then pressurize 4 hours；
Vacuum bag, airfelt, isolating membrane are removed in release after the completion of step 4, pressurize, will be described
The multiple structure demoulding.
2. the adhering method of a kind of froth bed according to claim 1 and aluminum alloy outer cover,
It is characterized in that：Described isolating membrane is porous release film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653992.2A CN106564198A (en) | 2015-10-10 | 2015-10-10 | Method for bonding foam layer and aluminum alloy skin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510653992.2A CN106564198A (en) | 2015-10-10 | 2015-10-10 | Method for bonding foam layer and aluminum alloy skin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106564198A true CN106564198A (en) | 2017-04-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510653992.2A Pending CN106564198A (en) | 2015-10-10 | 2015-10-10 | Method for bonding foam layer and aluminum alloy skin |
Country Status (1)
| Country | Link |
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| CN (1) | CN106564198A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142814A (en) * | 2016-07-08 | 2016-11-23 | 陕西飞机工业（集团）有限公司 | A kind of adhering method solving foam plastics core and metal skin delamination |
| CN108819270A (en) * | 2018-05-03 | 2018-11-16 | 上海晋飞碳纤科技股份有限公司 | A kind of core material bonded structure and technique suitable for complex profile |
| CN110802668A (en) * | 2019-09-27 | 2020-02-18 | 江苏亨睿碳纤维科技有限公司 | Foam sandwich composite material part with internal thread positioning metal insert and manufacturing method thereof |
| CN113427792A (en) * | 2021-07-03 | 2021-09-24 | 深圳市方科马新材料有限公司 | Forming method of hard polystyrene foam material skin composite structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106142814A (en) * | 2016-07-08 | 2016-11-23 | 陕西飞机工业（集团）有限公司 | A kind of adhering method solving foam plastics core and metal skin delamination |
| CN108819270A (en) * | 2018-05-03 | 2018-11-16 | 上海晋飞碳纤科技股份有限公司 | A kind of core material bonded structure and technique suitable for complex profile |
| CN110802668A (en) * | 2019-09-27 | 2020-02-18 | 江苏亨睿碳纤维科技有限公司 | Foam sandwich composite material part with internal thread positioning metal insert and manufacturing method thereof |
| CN113427792A (en) * | 2021-07-03 | 2021-09-24 | 深圳市方科马新材料有限公司 | Forming method of hard polystyrene foam material skin composite structure |
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Application publication date: 20170419 |