CN109159440B - A kind of three-dimensional hollow composite repair method - Google Patents
A kind of three-dimensional hollow composite repair method Download PDFInfo
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- CN109159440B CN109159440B CN201810796183.0A CN201810796183A CN109159440B CN 109159440 B CN109159440 B CN 109159440B CN 201810796183 A CN201810796183 A CN 201810796183A CN 109159440 B CN109159440 B CN 109159440B
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- dimensional hollow
- repairing
- fabric
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- dimensional
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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
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/04—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements
- B29C73/10—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D using preformed elements using patches sealing on the surface of the article
-
- 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
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
-
- 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
- B29C73/00—Repairing of articles made from plastics or substances in a plastic state, e.g. of articles shaped or produced by using techniques covered by this subclass or subclass B29D
- B29C73/24—Apparatus or accessories not otherwise provided for
- B29C73/26—Apparatus or accessories not otherwise provided for for mechanical pretreatment
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Abstract
The invention discloses a kind of three-dimensional hollow composite repair technologies, it is repaired after being cleared up using three-dimensional hollow fabric material for repairing hollow Fabric composites breakage, flexibility is good before hollow fabric material for repairing resin solidification, standing is good after resin infiltration, mechanical performance is excellent after resin solidification, imparts the good repairing characteristic of hollow fabric.Product structure is with the obvious advantage in terms of product uniformity, unstressed centrality, wave transparent performance, lightweight and repairing intensity without significant change after technical solution of the present invention repairing.And the technical operation is simple, in-orbit repairing can be achieved, and is the ideal repairing method of interlayer composite material.
Description
Technical field
The invention belongs to technical field of composite materials, and in particular to a kind of three-dimensional hollow composite repair method
Background technique
Three-dimensional hollow composite material is a kind of novel interlayer composite material, and the basis for constituting sandwich is the warp on surface layer
Yarn, weft yarn and two surface layers of connection and the Z-direction fiber for forming core.Hollow fabric directly forms three-dimensional whole after resin compounded
Composite material sandwich structure, for cellular material and foamed material, hollow composite material, which has, to be not easy to be layered, can set
Strong, fillable, the pre-buried advantage of meter property and good heat preservation, heat-insulated, soundproof effect, have been widely used for track at present
The fields such as traffic, vehicle mounted square cabin and building materials.
Three-dimensional hollow composite material in use, since various accidents will cause the damage of three-dimensional hollow composite material
Wound.Therefore needing to carry out corresponding repair makes it restore original function and bearing capacity.Traditional processing method, which uses, excavates
Filler and surface layer are injected after damage field.Filling processing will lead to material and integrally increase weight, increase, and due to face in sandwich
Layer is universal relatively thin, and filler is easy to cause surface layer to heave and the inhomogeneities of rigidity, eventually leads to product in repairing area stress
It concentrates；Surface layer reinforcement is difficult to realize three-dimensional hollow composite material and restores original function and bearing capacity, and influences surface quality.
A kind of three-dimensional hollow composite repair method is developed thus, solves three-dimensional hollow composite material in the prior art
The deficiency of repairing technique, it appears particularly important.
Summary of the invention
To solve to repair state after hollow fabric core filled composite material existing in the prior art is damaged in actual condition
Bad technical problem, the present invention provide a kind of three-dimensional hollow composite repair method.
The technical solution adopted by the present invention is that:
A kind of three-dimensional hollow composite repair method, comprising the following steps:
Step 1: the upper surface of the three-dimensional hollow composite material of damaged part layer and intermediate suede being removed through layer, form clear (area)
Domain I；
Step 2: on the basis of removing region I, extending out remove suede through layer around, and clear up suede through layer and upper and lower surface layer
Contact surface, formed remove region II, remove region II include remove region I；
Step 3: repairing three-dimensional hollow fabric is cut on the basis of removing region II；
Step 4: repairing three-dimensional hollow fabric is sufficiently impregnated resin；
Step 5: the hollow fabric after impregnating resin being placed to and is removed in region II；
Step 6: in the upper surface of repairing hollow fabric layer composite thickness compensation layer；It is successively spread in the upper surface of thickness compensation layers
Put release cloth and flat plate mold；
Step 7: solidification demoulding；
Step 8: surface polishing and protective treatment.
In order to remove affected area all, removing region I described in preferred steps 1 at least covers affected area.
In order to improve repair efficiency, described in preferred steps 2 around extend out remove suede through layer size be 10~
100mm.Flared region to one, three-dimensional hollow fabric stretching, extension of repairing space, conducive to repairing three-dimensional hollow fabric and source textile
In conjunction with.
In order to improve repair efficiency, the preferably described repairing three-dimensional hollow fabric is glass fibre hollow fabric, in carbon fiber
One of empty fabric, aramid fiber hollow fabric, glass fibre and carbon fiber hybrid hollow fabric.
In order to improve repair efficiency, material and the three-dimensional hollow that three-dimensional hollow fabric is repaired described in preferred steps 3 are compound
The material of the hollow fabric of material is identical, thickness and consistency of thickness of the three-dimensional hollow composite material suede through layer, length and width dimensions and clear
Except region II is consistent.
In order to improve repair efficiency, resin described in preferred steps 4 is epoxy resin, in phenolic resin, unsaturated-resin
One kind.
In order to improve repair efficiency, the implantation mode that hollow fabric is repaired described in preferred steps 5 is using folding-stretching, extension
Three-dimensional hollow composite material is placed in and removes in region II by mode, and guarantees after fabric rebound that institutional framework is complete, corrugationless.
In order to improve repair efficiency, thickness compensation layers described in preferred steps 6 are flat fabric, the material of flat fabric with
The surface layer of three-dimensional hollow composite material is identical.
In order to improve repair efficiency, protection processing method described in preferred steps 8 is surface lacquer, it is made to return back to original
State.
A kind of application of any of the above-described method for repairing and mending, the method for repairing and mending can be used for three-dimensional hollow composite material, foam
The repairing of interlayer composite material or honeycomb sandwich composite.
Beneficial effects of the present invention:
Repairing three-dimensional hollow fabric of the invention is in soft condition before resin solidification, can pass through folding-extension style
Realize repairing three-dimensional hollow fabric laying and docile inside composite products damaged area；It is repaired in three-dimensional after infiltrating resin
Empty fabric has nature standing, guarantees prosthetic fabric and original structure hollow fabric composite faces gapless, accomplishes seamless
Bonding；
The present invention carries out interior reparation using three-dimensional hollow fabric, and composite material is still multi wall thin-wall construction, product after repairing
No significant difference before performance is relatively destroyed, if its wave transparent performance and weight are without significant change.Fabric construction is consistent with raw material structure,
Excellent in mechanical performance after hollow fabric solidification, nothing is substantially reduced before mechanical property is destroyed compared with structure, and composite material after reparation
Uniformity is guaranteed, is avoided part from tamping loaded rear stress and is concentrated；
Technology mending option of the invention is easy to operate, at low cost, it can be achieved that hollow fabric composite material is in applying working condition
Lower online repairing.
Detailed description of the invention
Fig. 1 is the institutional framework schematic diagram of intact three-dimensional hollow fabric；
Fig. 2 is the three-dimensional hollow Fabric composites local defect structural schematic diagram of embodiment of the present invention 1；
Fig. 3 is the three-dimensional hollow Fabric composites defect processing structural schematic diagram of embodiment of the present invention 1；
Fig. 4 is the three-dimensional hollow Fabric composites fault location suede of embodiment of the present invention 1 through layer processing structure schematic diagram；
Fig. 5 is the structural schematic diagram of the repairing three-dimensional hollow fabric of embodiment of the present invention 1；
Fig. 6 is that the repairing three-dimensional hollow fabric of embodiment of the present invention 1 is placed in schematic diagram；
Fig. 7 is the three-dimensional hollow fabric mend resilient structures schematic diagram of embodiment of the present invention 1；
Fig. 8 is status diagram after the three-dimensional hollow Fabric composites of embodiment of the present invention 1 is repaired；
In figure: 1- hollow fabric upper layer；2- hollow fabric cutting optimal；3- hollow fabric suede is through layer；4- composite material lacks
Fall into place；The removing region I that 5- cleaning fault location upper layer and suede are formed after layer；6- extends out what cleaning fault location suede was formed through layer
Remove region II；7- thickness compensation layers.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, with hollow fabric composite antenna housing part
Irregular destruction occurs, for being repaired using method for repairing and mending of the invention, technical solution of the present invention is carried out clear, complete
Site preparation description.
Embodiment 1
Refering to fig. 1 to Fig. 8, hollow fabric composite antenna housing characteristic size is 2000mm*2000mm, is locally occurred not
Regular destruction, maximum damage field are long * wide=20mm*10mm, thickness of composite material 10mm, and upper and lower surface thickness is respectively
1mm.For the operating condition, sectional repair is carried out to composite failure region.Steps are as follows for specific repairing:
Step 1: the upper surface of the three-dimensional hollow composite material of damaged part layer 1 and intermediate suede being removed through layer 3, remove region
I size is long 30mm, width 20mm, edge rounded corner；
Step 2: on the basis of removing region I, extending out remove suede through layer 3 around, and clear up suede through layer and upper and lower surface layer
Contact surface, all directions, which extend out, removes suede through layer having a size of 15mm, and being formed and removing the size of region II is long 60mm, width 50mm；
Step 3: repairing three-dimensional hollow fabric, the thickness of cut three-dimensional hollow fabric are cut on the basis of removing region II
For 8mm, a length of 60mm, width 50mm, material is identical with three-dimensional hollow textile material as antenna house；
Step 4: repairing three-dimensional hollow fabric is sufficiently impregnated epoxy resin；
Step 5: the three-dimensional hollow fabric of impregnating resin being placed in using folding-extension style and is removed in region II, is unfolded
The lower upper surface of hollow fabric docile surface layer above and below three-dimensional hollow composite material after hollow fabric is smooth and springs back is repaired,
Guarantee after fabric rebound that institutional framework is complete, corrugationless；
Step 6: repairing three-dimensional hollow fabric upper layer composite thickness compensation layer 7, reinforcement used in thickness compensation layers is
Common plane fabric, matrix are epoxy resin；Layer surface successively laying release cloth and flat plate mold are being compensated, is guaranteeing table after repairing
Face is smooth；
Step 7: flat plate mold and release cloth are removed after solidification；
Step 8: manual grinding surface, spray painting make it return back to original state.
Using the mending option, the repairing of hollow fabric composite material replaceability is only locally carried out to antenna house, so that antenna
It covers on and macroscopically changes without obvious electrical property, the wave transmission rate of different frequency range exists under two kinds of polarization modes after antenna house repairing
90% or more, preferably meet requirement of the antenna house to electrical property.Using the repairing method in guarantee radome electrical property energy and again
In the case that amount is without significant change, since local surface layer is thickeied because of repairing, nothing is substantially reduced before mechanical property is relatively repaired, even
There is a degree of promotion in part mechanics parameter.The wave transparent performance and mechanical property for repairing the irdome day after tomorrow are shown in Table 1 and table 2.
The wave transparent performance of the repairing irdome day after tomorrow of table 1
| Wave transmission rate/% after antenna house repairing | |
| 0.8~2.0GHz of vertical polarization | 96% |
| 2.0~4.0GHz of vertical polarization | 93% |
| 0.8~2.0GHz of horizontal polarization | 95% |
| 2.0~4.0GHz of horizontal polarization | 94% |
The mechanical property of the repairing irdome day after tomorrow of table 2
Claims (10)
1. a kind of three-dimensional hollow composite repair method, which comprises the following steps:
Step 1: the upper surface of the three-dimensional hollow composite material of damaged part layer and intermediate suede being removed through layer, is formed and removes region I；
Step 2: on the basis of removing region I, extending out remove suede through layer around, and clear up suede connecing through layer and upper and lower surface layer
Contacting surface forms and removes region II, and removing region II includes to remove region I；
Step 3: repairing three-dimensional hollow fabric is cut on the basis of removing region II；
Step 4: repairing three-dimensional hollow fabric is sufficiently impregnated resin；
Step 5: the repairing three-dimensional hollow fabric after impregnating resin being placed to and is removed in region II；
Step 6: in the upper surface of repairing three-dimensional hollow fabric layer composite thickness compensation layer；It is successively spread in the upper surface of thickness compensation layers
Put release cloth and flat plate mold；
Step 7: solidification demoulding；
Step 8: surface polishing and protective treatment.
2. three-dimensional hollow composite repair method as described in claim 1, which is characterized in that clear (area) described in step 1
Domain I at least covers affected area.
3. three-dimensional hollow composite repair method as described in claim 1, which is characterized in that described in step 2 around
Extending out and removing size of the suede through layer is 10~100mm.
4. three-dimensional hollow composite repair method as described in claim 1, which is characterized in that the repairing three-dimensional hollow is knitted
Object is that glass fibre hollow fabric, carbon fiber hollow fabric, aramid fiber hollow fabric, glass fibre and carbon fiber hybrid are hollow
One of fabric.
5. three-dimensional hollow composite repair method as described in claim 1, which is characterized in that repair three described in step 3
The material for tieing up hollow fabric is identical as the material of the hollow fabric of three-dimensional hollow composite material, thickness and three-dimensional hollow composite material
Consistency of thickness of the suede through layer, length and width dimensions are consistent with region II is removed.
6. three-dimensional hollow composite repair method as described in claim 1, which is characterized in that resin described in step 4 is
One of epoxy resin, phenolic resin, unsaturated-resin.
7. three-dimensional hollow composite repair method as described in claim 1, which is characterized in that in steps of 5, using folding
Repairing three-dimensional hollow fabric after impregnating resin is placed in clear (area) domain II by folded-extension style, and guarantees group after fabric rebound
Knit structural integrity, corrugationless.
8. three-dimensional hollow composite repair method as described in claim 1, which is characterized in that thickness described in step 6 is mended
Repaying layer is flat fabric, and the material of flat fabric is identical as the surface layer of three-dimensional hollow composite material.
9. three-dimensional hollow composite repair method as described in claim 1, it is characterised in that: protection described in step 8
Processing method is surface lacquer, it is made to return back to original state.
10. three-dimensional hollow composite repair method as described in any one of claims 1 to 9, it is characterised in that: the repairing
Method can be used for the repairing of three-dimensional hollow composite material, woven foam sandwich composite material or honeycomb sandwich composite.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810796183.0A CN109159440B (en) | 2018-07-19 | 2018-07-19 | A kind of three-dimensional hollow composite repair method |
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|---|---|---|---|
| CN201810796183.0A CN109159440B (en) | 2018-07-19 | 2018-07-19 | A kind of three-dimensional hollow composite repair method |
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| CN109159440A CN109159440A (en) | 2019-01-08 |
| CN109159440B true CN109159440B (en) | 2019-11-19 |
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| CN201810796183.0A Active CN109159440B (en) | 2018-07-19 | 2018-07-19 | A kind of three-dimensional hollow composite repair method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111517795A (en) * | 2020-04-27 | 2020-08-11 | 西北工业大学 | Thermal protection material structural damage repair patch and preparation and use method thereof |
| CN112366448A (en) * | 2020-10-15 | 2021-02-12 | 航天特种材料及工艺技术研究所 | High-temperature-resistant antenna housing and preparation method thereof |
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| CN103770346B (en) * | 2014-01-07 | 2016-05-04 | 杭州华聚复合材料有限公司 | A kind of restorative procedure of cellular thermoplastic plate |
| CN106515098B (en) * | 2016-10-28 | 2019-01-04 | 中材科技股份有限公司 | A kind of lightweight large scale hollow composite material and preparation method thereof |
| CN106628240A (en) * | 2016-12-14 | 2017-05-10 | 中航通飞研究院有限公司 | Repairing method of airplane composite material foam interlayer structure |
| CN107234819A (en) * | 2017-06-22 | 2017-10-10 | 南京宁镭电子科技有限公司 | A kind of method for repairing and mending of radome |
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Effective date of registration: 20211231 Address after: No.30, anhli, Yuhua West Road, Nanjing, Jiangsu Province, 210000 Patentee after: NANJING FIBERGLASS RESEARCH & DESIGN INSTITUTE Co.,Ltd. Address before: No.99, Tongtian Road, Jiangning Science Park, Nanjing, Jiangsu Province, 210000 Patentee before: SINOMA SCIENCE & TECHNOLOGY Co.,Ltd. |