CN117625049A - Adhesive transferring method in bonding process of composite material - Google Patents
Adhesive transferring method in bonding process of composite material Download PDFInfo
- Publication number
- CN117625049A CN117625049A CN202311648431.4A CN202311648431A CN117625049A CN 117625049 A CN117625049 A CN 117625049A CN 202311648431 A CN202311648431 A CN 202311648431A CN 117625049 A CN117625049 A CN 117625049A
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- China
- Prior art keywords
- adhesive
- adhesive transfer
- transfer plate
- composite
- perforated plate
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- 239000000853 adhesive Substances 0.000 title claims abstract description 113
- 230000001070 adhesive effect Effects 0.000 title claims abstract description 112
- 239000002131 composite material Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 52
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 5
- 230000001680 brushing effect Effects 0.000 claims abstract description 4
- 239000010410 layer Substances 0.000 claims description 16
- 239000012792 core layer Substances 0.000 claims description 9
- 238000007789 sealing Methods 0.000 claims description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 4
- 238000007598 dipping method Methods 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000011347 resin Substances 0.000 claims description 4
- 229920005989 resin Polymers 0.000 claims description 4
- 239000012945 sealing adhesive Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000002932 luster Substances 0.000 claims description 3
- 238000004026 adhesive bonding Methods 0.000 abstract description 5
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 239000012528 membrane Substances 0.000 abstract 1
- 239000011162 core material Substances 0.000 description 9
- 239000002313 adhesive film Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000030279 gene silencing Effects 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 230000001743 silencing effect Effects 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Landscapes
- Laminated Bodies (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of adhesive bonding of composite materials, and discloses an adhesive transferring method in the adhesive bonding process of a composite material, which comprises the following steps: s1, manufacturing an adhesive transfer plate; s2, brushing a preset amount of adhesive on the surface of the adhesive transfer plate, paving the adhesive transfer plate on the surface of the composite material perforated plate, enabling one surface of the adhesive transfer plate containing the adhesive to face the composite material perforated plate, and fixing the periphery of the adhesive transfer plate on the forming die. The problem of current combined material perforated plate glue joint process adopts glued membrane or scribbles the gluing agent, can lead to combined material perforated plate micropore to block up, and the disability rate of spare part is higher is solved.
Description
Technical Field
The invention belongs to the technical field of bonding of composite materials, and particularly relates to an adhesive transfer method in a bonding process of a composite material.
Background
In order to meet the specific functions of the aircraft, some composite parts need to be designed into a special form, such as a "board core gluing" form, a "board gluing" form, and the like. For example: the composite material nacelle acoustic liner is used as a special form of a composite material sandwich structure, and comprises a composite material backboard, a honeycomb core material, a composite material perforated plate (the composite material laminated plate is provided with a through hole structure), a wire mesh and other components, one surface of the perforated plate is bonded with the honeycomb, the other surface of the perforated plate is bonded with the wire mesh due to the specificity of the structural characteristics, the bonding process does not allow adhesive to block micropores on the perforated plate, and if the adhesive film bonding or the adhesive coating bonding is adopted in a conventional mode, the micropores of the perforated plate are blocked, a silencing dead zone is formed, and finally the integral silencing effect of the acoustic liner is greatly reduced.
Disclosure of Invention
The invention provides an adhesive transferring method in the bonding process of a composite material, which solves the problems that the bonding process of the traditional composite material perforated plate adopts an adhesive film or is coated with an adhesive, so that micropores of the composite material perforated plate are blocked, and the rejection rate of parts is high.
The invention provides an adhesive transferring method in a bonding process of a composite material, which comprises the following steps:
s1, manufacturing an adhesive transfer plate;
s2, brushing a preset amount of adhesive on the surface of the adhesive transfer plate, paving the adhesive transfer plate on the surface of the composite material perforated plate, enabling one surface of the adhesive transfer plate containing the adhesive to face the composite material perforated plate, and fixing the periphery of the adhesive transfer plate on the forming die.
Further, the adhesive transfer plate is made of deformable rubber materials, and the thickness of the adhesive transfer plate is smaller than 5mm.
Further, the preset amount of the adhesive specifically includes: 300g/m 2 ～350g/m 2 。
Further, a margin is arranged on one side of the adhesive transfer plate;
when the adhesive transfer plate is paved on the surface of the composite perforated plate, the adhesive transfer plate is attached to the composite perforated plate, and is fixed on the forming die through single-side allowance, so that relative sliding does not occur between the adhesive transfer plate and the composite perforated plate, and the adhesive cannot enter the holes.
Further, before S1, the method further includes:
the surface of the perforated plate of the composite material is sandblasted, the glue nubs and the resin luster on the surface are removed, the surface is wiped clean by dipping absolute ethyl alcohol with gauze, and the surface is aired.
Further, after S2, the method further comprises:
s3, sequentially paving an isolating film, an air-felt and a vacuum bag film on the surface of the adhesive transfer plate, sealing the isolating film, the air-felt and the vacuum bag film on a die by using sealing adhesive tapes, vacuumizing and keeping for a certain time;
removing the vacuum bag film, the ventilated felt, the isolating film and the adhesive transfer plate layer by layer;
further, after S3, the method further includes:
s4, volatilizing the solvent in the adhesive on the surface of the perforated plate of the composite material completely;
s5, combining and fixing the composite perforated plate and the honeycomb core layer by using an adhesive.
Further, after S5, the method further includes:
the surface of the honeycomb core layer is covered with a layer of polytetrafluoroethylene varnished cloth and a layer of airfelt, and the honeycomb core layer is sealed by a vacuum bag film and then sent into an oven for vacuumizing, heating and curing.
According to the technical scheme, the specific adhesive transfer plate and the process method are adopted, the adhesive is transferred to the perforated plate, holes are not blocked, and the rejection rate of parts is reduced.
Drawings
FIG. 1 is a schematic diagram of an adhesive transfer method in a bonding process of a composite material according to an embodiment of the present invention;
the device comprises a 1-forming die, a 2-composite perforated plate, a 3-adhesive transfer plate, an adhesive in a black area, a 4-isolating film, a 5-airfelt and a 6-vacuum bag film.
Detailed Description
The technical scheme of the invention is described in detail below with reference to the accompanying drawings.
The embodiment of the invention provides an adhesive transferring method in the bonding process of a composite material, as shown in fig. 1, an adhesive is adopted for bonding a perforated plate and a honeycomb core (or other structures), the prepared adhesive is transferred to the surface of the perforated plate in a transfer printing mode as required, holes cannot be blocked, and the situation that the adhesive flows into the perforated plate is found, the perforated plate is cleaned in time is found, and the method specifically comprises the following steps:
manufacturing an adhesive transfer plate (deformable, with the thickness smaller than 5mm, made of rubber materials and made of a non-porous flat plate) according to the size of the perforated plate made of the composite material, wherein the adhesive transfer plate is more than a single side of the perforated plate by about 20mm and is used for fixing the adhesive transfer plate;
coating a certain amount of adhesive on the surface of the adhesive transfer plate;
the adhesive transfer plate is paved on the surface of the perforated plate, the adhesive containing surface faces the perforated plate, the adhesive transfer plate is attached to the perforated plate in the working procedure, and the adhesive transfer plate is fixed on the forming die through the allowance area;
then sequentially paving an isolating film, an air felt and a vacuum bag film on the surface of the adhesive transfer plate, and sealing on a die by using a sealing adhesive tape, wherein the specific view is shown in figure 1;
vacuum degree is 0.04-0.06 MPa, and a certain time is kept;
and the auxiliary materials are removed layer by layer, so that the relative sliding between the adhesive transfer plate and the composite material perforated plate is avoided, and the adhesive cannot enter the holes.
Through vacuum pressure, the adhesive on the adhesive transfer plate is transferred to the composite material perforated plate, the adhesive is not adhered to the through hole area of the perforated plate, so that the transfer of the adhesive is realized, and micropores of the perforated plate are not blocked.
The invention provides an adhesive transferring method in a bonding process of a composite material, which comprises the following steps:
s1, manufacturing an adhesive transfer plate;
s2, brushing a preset amount of adhesive on the surface of the adhesive transfer plate, paving the adhesive transfer plate on the surface of the composite material perforated plate, enabling one surface of the adhesive transfer plate containing the adhesive to face the composite material perforated plate, and fixing the periphery of the adhesive transfer plate on the forming die.
The adhesive transfer plate is made of deformable rubber materials, and the thickness of the adhesive transfer plate is smaller than 5mm.
The preset amount of the adhesive is specifically as follows: 300g/m 2 ～350g/m 2 。
The adhesive transfer plate is provided with a margin on one side;
when the adhesive transfer plate is paved on the surface of the composite perforated plate, the adhesive transfer plate is attached to the composite perforated plate, and is fixed on the forming die through single-side allowance, so that relative sliding does not occur between the adhesive transfer plate and the composite perforated plate, and the adhesive cannot enter the holes.
Prior to S1, the method further comprises:
the surface of the perforated plate of the composite material is sandblasted, the glue nubs and the resin luster on the surface are removed, the surface is wiped clean by dipping absolute ethyl alcohol with gauze, and the surface is aired.
After S2, the method further comprises:
s3, sequentially paving an isolating film, an air-felt and a vacuum bag film on the surface of the adhesive transfer plate, sealing the isolating film, the air-felt and the vacuum bag film on a die by using sealing adhesive tapes, vacuumizing and keeping for a certain time;
removing the vacuum bag film, the ventilated felt, the isolating film and the adhesive transfer plate layer by layer;
after S3, the method further comprises:
s4, volatilizing the solvent in the adhesive on the surface of the perforated plate of the composite material completely;
s5, combining and fixing the composite perforated plate and the honeycomb core layer by using an adhesive.
After S5, the method further comprises:
the surface of the honeycomb core layer is covered with a layer of polytetrafluoroethylene varnished cloth and a layer of airfelt, and the honeycomb core layer is sealed by a vacuum bag film and then sent into an oven for vacuumizing, heating and curing.
Specifically, the bonding process of the composite material air inlet channel acoustic liner plate core (honeycomb core and perforated plate) comprises the following specific steps:
(1) Cementing surface treatment
The surface of the perforated plate in the cementing area of the honeycomb core is treated in a sand blasting mode, the glue nubs and the resin gloss on the surface are thoroughly removed, the surface is wiped clean by dipping absolute ethyl alcohol with gauze, and the surface is aired.
(2) Adhesive transfer
Firstly, an adhesive transfer plate is manufactured, the prepared adhesive is transferred to the surface of a perforated plate according to the requirement of the step 3, and micropores of the perforated plate are checked to be unblocked. The honeycomb core and the perforated plate are glued by F.JN-2-39 adhesive;
(3) And combining and fixing the honeycomb core and the perforated plate after the solvent in the adhesive volatilizes completely.
(4) Covering a layer of domestic polytetrafluoroethylene varnished cloth and a layer of airfelt on the surface of the honeycomb core, sealing by a vacuum bag film, and then feeding into an oven for vacuumizing, heating and curing.
According to the technical scheme, the specific adhesive transfer plate and the process method are adopted, the adhesive is transferred to the perforated plate, holes are not blocked, and the rejection rate of parts is reduced.
Claims (8)
1. A method of transferring adhesive during bonding of a composite material, the method comprising:
s1, manufacturing an adhesive transfer plate;
s2, brushing a preset amount of adhesive on the surface of the adhesive transfer plate, paving the adhesive transfer plate on the surface of the composite material perforated plate, enabling one surface of the adhesive transfer plate containing the adhesive to face the composite material perforated plate, and fixing the periphery of the adhesive transfer plate on the forming die.
2. The method for transferring adhesive in a bonding process of composite materials according to claim 1, wherein the adhesive transfer plate is made of deformable rubber material, and has a thickness of less than 5mm.
3. The method for transferring adhesive in a bonding process of composite materials according to claim 1, wherein the predetermined amount of adhesive is specifically: 300g/m 2 ～350g/m 2 。
4. The adhesive transfer method for a composite material bonding process according to claim 1, wherein the adhesive transfer plate is provided with a margin on one side;
when the adhesive transfer plate is paved on the surface of the composite perforated plate, the adhesive transfer plate is attached to the composite perforated plate, and is fixed on the forming die through single-side allowance, so that relative sliding does not occur between the adhesive transfer plate and the composite perforated plate, and the adhesive cannot enter the holes.
5. The method of adhesive transfer for composite bonding according to claim 1, wherein prior to S1, the method further comprises:
the surface of the perforated plate of the composite material is sandblasted, the glue nubs and the resin luster on the surface are removed, the surface is wiped clean by dipping absolute ethyl alcohol with gauze, and the surface is aired.
6. The method of adhesive transfer for composite bonding according to claim 1, wherein after S2, the method further comprises:
s3, sequentially paving an isolating film, an air-felt and a vacuum bag film on the surface of the adhesive transfer plate, sealing the isolating film, the air-felt and the vacuum bag film on a die by using sealing adhesive tapes, vacuumizing and keeping for a certain time;
and removing the vacuum bag film, the airfelt, the isolating film and the adhesive transfer plate layer by layer.
7. The method of adhesive transfer for composite bonding according to claim 6, wherein after S3, the method further comprises:
s4, volatilizing the solvent in the adhesive on the surface of the perforated plate of the composite material completely;
s5, combining and fixing the composite perforated plate and the honeycomb core layer by using an adhesive.
8. The method of adhesive transfer for composite bonding according to claim 7, wherein after S5, the method further comprises:
the surface of the honeycomb core layer is covered with a layer of polytetrafluoroethylene varnished cloth and a layer of airfelt, and the honeycomb core layer is sealed by a vacuum bag film and then sent into an oven for vacuumizing, heating and curing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311648431.4A CN117625049A (en) | 2023-12-04 | 2023-12-04 | Adhesive transferring method in bonding process of composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311648431.4A CN117625049A (en) | 2023-12-04 | 2023-12-04 | Adhesive transferring method in bonding process of composite material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117625049A true CN117625049A (en) | 2024-03-01 |
Family
ID=90016110
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311648431.4A Pending CN117625049A (en) | 2023-12-04 | 2023-12-04 | Adhesive transferring method in bonding process of composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117625049A (en) |
-
2023
- 2023-12-04 CN CN202311648431.4A patent/CN117625049A/en active Pending
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