CN111734718A - Continuous fiber reinforced composite material connecting structure and preparation method thereof - Google Patents
Continuous fiber reinforced composite material connecting structure and preparation method thereof Download PDFInfo
- Publication number
- CN111734718A CN111734718A CN202010751607.9A CN202010751607A CN111734718A CN 111734718 A CN111734718 A CN 111734718A CN 202010751607 A CN202010751607 A CN 202010751607A CN 111734718 A CN111734718 A CN 111734718A
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- CN
- China
- Prior art keywords
- reinforced composite
- fiber reinforced
- continuous fiber
- connecting part
- composite material
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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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Links
- 239000003733 fiber-reinforced composite Substances 0.000 title claims abstract description 37
- 239000000463 material Substances 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims description 6
- 239000003292 glue Substances 0.000 claims abstract description 9
- 239000000853 adhesive Substances 0.000 claims abstract description 8
- 230000001070 adhesive effect Effects 0.000 claims abstract description 8
- 239000000835 fiber Substances 0.000 claims description 12
- 238000001513 hot isostatic pressing Methods 0.000 claims description 7
- 229920005989 resin Polymers 0.000 claims description 6
- 239000011347 resin Substances 0.000 claims description 6
- 229920002748 Basalt fiber Polymers 0.000 claims description 3
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 239000004814 polyurethane Substances 0.000 claims description 3
- 229920002635 polyurethane Polymers 0.000 claims description 3
- 239000011208 reinforced composite material Substances 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000004381 surface treatment Methods 0.000 claims description 3
- 229920001187 thermosetting polymer Polymers 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 claims description 3
- 239000004760 aramid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000002131 composite material Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract 2
- 210000001503 joint Anatomy 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16B1/02—Means for securing elements of mechanisms after operation
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B11/00—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding
- F16B11/006—Connecting constructional elements or machine parts by sticking or pressing them together, e.g. cold pressure welding by gluing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
- F16B2200/99—Fasteners with means for avoiding incorrect assembly or positioning
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention provides a continuous fiber reinforced composite material connecting structure, relates to the technical field of composite material connection, and solves the technical problems that in the prior art, mechanical connection in the composite material connecting structure is not easy to form a smooth appearance and the bearing capacity of adhesive connection is insufficient, wherein the continuous fiber reinforced composite material connecting structure comprises a connecting part I (1), a connecting part II (2) and an intermediate connecting part (3). The invention overcomes the defect that the mechanical connection is not easy to form a smooth appearance, overcomes the defect of low bearing capacity of the glue joint, and has wider application range and better practical effect.
Description
Technical Field
The invention relates to the technical field of composite material connection, in particular to a continuous fiber reinforced composite material connection structure and a preparation method thereof.
Background
The continuous fiber reinforced composite material is more and more widely applied due to excellent performance, relates to the fields of aviation, aerospace, traffic, energy and the like, and gradually develops from a non-bearing structure to a secondary bearing structure and even a main bearing structure.
As structural members, especially for structural members with higher load bearing requirements, the connection structure becomes the key of the composite material. In the prior art, the connecting structure of the composite materials mainly comprises mechanical connection, adhesive connection and mixed connection of the mechanical connection and the adhesive connection, and butt joint and lap joint are two main manifestations. The mechanical connection is not easy to form a smooth appearance, and the mechanical connection part is a stress concentration part; the glue joint bears large load under the influence of the glue joint area, and the anti-peeling strength is low.
Disclosure of Invention
The invention aims to provide a continuous fiber reinforced composite material connecting structure, which is characterized in that a first connecting part and a second connecting part which are made of continuous fiber reinforced composite materials are butted, a connecting groove on the first connecting part and a connecting boss on the second connecting part are butted, and a connecting glue layer is coated on the surface between the connecting groove and the connecting boss, so that the fastening property and the firmness of the two parts are ensured through bolts, and the technical problems that the mechanical connection in the composite material connecting structure in the prior art is not easy to form a smooth appearance and the bearing capacity of the glue connection is insufficient are solved. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention adopts the following technical scheme:
a continuous fiber reinforced composite material connecting structure comprises a first connecting part and a second connecting part, wherein the first connecting part and the second connecting part are both made of continuous fiber reinforced composite materials; wherein:
preferably, a connecting groove is arranged on the first connecting part;
preferably, the second connecting part is provided with a connecting boss corresponding to the connecting groove on the first connecting part;
preferably, the first connecting part and the second connecting part are matched and installed together through the connecting groove and the connecting boss;
preferably, the surfaces of the connecting groove and the connecting boss are coated with adhesive glue layers;
preferably, the first connecting part and the second connecting part are also provided with intermediate connecting pieces on the connecting groove and the connecting boss.
Preferably, the intermediate connecting member is a bolt.
Optionally or preferably, the connecting groove and the connecting boss are further provided with bolt holes for mounting bolts.
Optionally or preferably, the reinforcement in the continuous fiber reinforced composite material of the first connecting part and the second connecting part comprises one or more of fibers, aramid fibers, basalt fibers, ultra-high molecular weight polyethylene fibers, glass fibers and the like.
Alternatively or preferably, the matrix resin in the continuous fiber reinforced composite material of the first connecting part and the second connecting part is one of thermosetting resins such as epoxy resin and polyurethane.
Alternatively or preferably, the connecting grooves and the connecting bosses on the first connecting part and the second connecting part can be tenon-and-mortise structures which play the same role.
The invention also provides a preparation method of the continuous fiber reinforced composite material connecting structure, which comprises the following steps:
s1, laying prepreg fibers to a certain thickness, and laying the prepreg fibers to a corresponding structural thickness according to the bearing requirement and the tenon-and-mortise structure size requirement to perform preforming;
s2, placing the preformed part into a mould, introducing high-pressure gas, heating and maintaining the pressure for a certain time, and carrying out hot isostatic pressing on the continuous fiber reinforced composite material;
s3, finally trimming and performing surface treatment to obtain the continuous reinforced composite material mortise-tenon joint structure;
alternatively or preferably, the continuous fiber reinforced composite material mortise-tenon joint structure is prepared by adopting a high-pressure gas hot isostatic pressing one-step forming technology.
Based on the technical scheme, the following technical effects can be generated:
the continuous fiber reinforced composite material connecting structure provided by the embodiment of the invention can be used for connecting the whole composite materials. According to the continuous fiber reinforced composite material connecting structure, the connecting part I and the connecting part II which are made of the continuous fiber reinforced composite material are butted, the connecting groove in the connecting part I and the connecting boss in the connecting part II are coated with the connecting glue layer, the tightness and the firmness of the connecting groove and the connecting boss are ensured through the bolts, and the technical problems that in the composite material connecting structure in the prior art, the mechanical connection is not easy to form a smooth appearance and the adhesive connection bearing capacity is insufficient are solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a split view of the connection structure of the present invention;
FIG. 2 is a colloid-bonded overall view of the bonding structure of the present invention;
FIG. 3 is an overall view of the hybrid connection of the bolt and the adhesive joint of the connection structure of the present invention;
FIG. 4 is a schematic view of high-pressure gas hot isostatic pressing forming of a mortise-tenon structure of a connection fiber reinforced composite material according to the present invention;
in the figure: 1. a first connecting part; 101. a connecting groove; 2. a second connecting part; 201. connecting the bosses; 3. an intermediate connecting member.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
The invention will be further described with reference to the accompanying drawings, but the scope of the invention is not limited to the following.
As shown in fig. 1-3:
the invention provides a continuous fiber reinforced composite material connecting structure, which comprises a connecting part I1 and a connecting part II 2, wherein the connecting part I and the connecting part II are both made of continuous fiber reinforced composite materials; wherein:
a connecting groove 101 is formed in the connecting part I1;
the connecting part II 2 is provided with a connecting boss 201 corresponding to the connecting groove 101 on the connecting part I1;
the first connecting part 1 and the second connecting part 2 are matched and installed together with the connecting boss 201 through the connecting groove 101;
the surfaces of the connecting groove 101 and the connecting boss 201 are coated with adhesive glue layers;
the connecting parts I1 and II 2 are also provided with an intermediate connecting piece 3 on the connecting groove 101 and the connecting boss 201.
In an alternative embodiment, the intermediate connecting member 3 is a bolt.
In an alternative embodiment, bolt holes for installing bolts are further provided on the connection groove 101 and the connection boss 201.
As an alternative embodiment, the reinforcement in the continuous fiber reinforced composite material of the first connecting part 1 and the second connecting part 2 includes one or more of fiber, aramid fiber, basalt fiber, ultra-high molecular weight polyethylene fiber, glass fiber, and the like.
As an alternative embodiment, the matrix resin in the continuous fiber reinforced composite material of the first connecting part 1 and the second connecting part 2 is one of thermosetting resins such as epoxy resin and polyurethane.
As an alternative embodiment, the connection grooves 101 and the connection bosses 201 on the first connection part 1 and the second connection part 2 may be mortise and tenon structures which perform the same function.
The invention also provides a preparation method of the continuous composite material connecting structure, which comprises the following steps;
s1, laying prepreg fibers to a certain thickness, and laying the prepreg fibers to a corresponding structural thickness according to the bearing requirement and the tenon-and-mortise structure size requirement to perform preforming;
s2, placing the preformed part into a mould, introducing high-pressure gas, heating and maintaining the pressure for a certain time, and carrying out hot isostatic pressing on the continuous fiber reinforced composite material;
s3, finally trimming and performing surface treatment to obtain the continuous reinforced composite material mortise-tenon joint structure;
alternatively or preferably, the continuous fiber reinforced composite material mortise-tenon joint structure is prepared by adopting a high-pressure gas hot isostatic pressing one-step forming technology.
Claims (7)
1. A continuous fiber reinforced composite connection structure is characterized in that: the connecting component comprises a first connecting component (1) and a second connecting component (2) which are both made of continuous fiber reinforced composite materials; wherein:
a connecting groove (101) is formed in the connecting part I (1);
the second connecting part (2) is provided with a connecting boss (201) corresponding to the connecting groove (101) on the first connecting part (1);
the first connecting part (1) and the second connecting part (2) are matched and installed together with the connecting boss (201) through the connecting groove (101);
the surfaces of the connecting groove (101) and the connecting boss (201) are coated with adhesive glue layers;
and the connecting part I (1) and the connecting part II (2) are also provided with an intermediate connecting piece (3) on the connecting groove (101) and the connecting boss (201).
2. The continuous fiber reinforced composite connecting structure according to claim 1, wherein: the middle connecting piece (3) is a bolt.
3. The continuous fiber reinforced composite connecting structure according to claim 1, wherein: and bolt holes for mounting bolts are further formed in the connecting groove (101) and the connecting boss (201).
4. The continuous fiber reinforced composite connecting structure according to claim 1, wherein: the reinforcement in the continuous fiber reinforced composite material of the first connecting part (1) and the second connecting part (2) comprises one or more of fibers, aramid fibers, basalt fibers, ultra-high molecular weight polyethylene fibers, glass fibers and the like.
5. The continuous fiber reinforced composite connecting structure according to claim 1, wherein: and the matrix resin in the continuous fiber reinforced composite material of the connecting part I (1) and the connecting part II (2) is one of thermosetting resins such as epoxy resin, polyurethane and the like.
6. The continuous fiber reinforced composite connecting structure according to claim 1, wherein: the connecting grooves (101) and the connecting bosses (201) on the first connecting part (1) and the second connecting part (2) can be of mortise and tenon structures which play the same role.
7. A method for preparing a continuous fiber reinforced composite material connecting structure comprises the following steps:
s1, laying prepreg fibers to a certain thickness, and laying the prepreg fibers to a corresponding structural thickness according to the bearing requirement and the tenon-and-mortise structure size requirement to perform preforming;
s2, placing the preformed part into a mould, introducing high-pressure gas, heating and maintaining the pressure for a certain time, and carrying out hot isostatic pressing on the continuous fiber reinforced composite material;
s3, finally trimming and performing surface treatment to obtain the continuous reinforced composite material mortise-tenon joint structure;
the preparation of the continuous fiber reinforced composite material mortise and tenon joint structure adopts a high-pressure gas hot isostatic pressing one-step forming technology.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010751607.9A CN111734718A (en) | 2020-07-30 | 2020-07-30 | Continuous fiber reinforced composite material connecting structure and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010751607.9A CN111734718A (en) | 2020-07-30 | 2020-07-30 | Continuous fiber reinforced composite material connecting structure and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN111734718A true CN111734718A (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010751607.9A Pending CN111734718A (en) | 2020-07-30 | 2020-07-30 | Continuous fiber reinforced composite material connecting structure and preparation method thereof |
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| Country | Link |
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| CN (1) | CN111734718A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085226A (en) * | 2021-04-12 | 2021-07-09 | 三一重能股份有限公司 | Mixed material pultrusion plate, wind power blade and wind power generator set |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62222846A (en) * | 1986-03-26 | 1987-09-30 | 工業技術院長 | Manufacture of lint metallic composite material |
| JP2001074199A (en) * | 1999-09-03 | 2001-03-23 | Venture Labo:Kk | Internal pressure vessel made of fiber-reinforced resin compound and connector |
| US20030054131A1 (en) * | 2001-09-19 | 2003-03-20 | Akio Ooshima | Carrier member made of a UV resistant fiber-reinforced composite material and process for producing thereof |
| US20030207155A1 (en) * | 1998-03-27 | 2003-11-06 | Siemens Westinghouse Power Corporation | Hybrid ceramic material composed of insulating and structural ceramic layers |
| KR20050077420A (en) * | 2004-01-28 | 2005-08-02 | 주식회사 건일엔지니어링 | Fiber-reinforced composite bottom plate member for parking lot and construction method of the bottom plate of parking lot using the member |
| WO2012070527A1 (en) * | 2010-11-25 | 2012-05-31 | 株式会社インキュベーション・アライアンス | Novel carbon nanotubes and production method therefor |
| CN103398241A (en) * | 2013-08-08 | 2013-11-20 | 崔�国 | High-pressure flexible rubber hose and joint connecting method thereof |
| CN103925267A (en) * | 2014-03-19 | 2014-07-16 | 刘龙权 | Composite material and metal connection structure and forming method thereof |
| CN204370574U (en) * | 2014-12-26 | 2015-06-03 | 南京工业大学 | Board plug type band enhancement mode wooden construction Tenon node |
| CN207736471U (en) * | 2018-01-16 | 2018-08-17 | 南京林业大学 | Adapt to the height-adjustable solid wood bench of child growth |
| CN111396484A (en) * | 2020-03-24 | 2020-07-10 | 西安联瑞科技实业有限责任公司 | Resin-based fiber composite material plate spring body, manufacturing method thereof and plate spring assembly |
| CN212455075U (en) * | 2020-07-30 | 2021-02-02 | 西南交通大学 | Continuous fiber reinforced composite material connecting structure |
-
2020
- 2020-07-30 CN CN202010751607.9A patent/CN111734718A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62222846A (en) * | 1986-03-26 | 1987-09-30 | 工業技術院長 | Manufacture of lint metallic composite material |
| US20030207155A1 (en) * | 1998-03-27 | 2003-11-06 | Siemens Westinghouse Power Corporation | Hybrid ceramic material composed of insulating and structural ceramic layers |
| JP2001074199A (en) * | 1999-09-03 | 2001-03-23 | Venture Labo:Kk | Internal pressure vessel made of fiber-reinforced resin compound and connector |
| US20030054131A1 (en) * | 2001-09-19 | 2003-03-20 | Akio Ooshima | Carrier member made of a UV resistant fiber-reinforced composite material and process for producing thereof |
| KR20050077420A (en) * | 2004-01-28 | 2005-08-02 | 주식회사 건일엔지니어링 | Fiber-reinforced composite bottom plate member for parking lot and construction method of the bottom plate of parking lot using the member |
| WO2012070527A1 (en) * | 2010-11-25 | 2012-05-31 | 株式会社インキュベーション・アライアンス | Novel carbon nanotubes and production method therefor |
| CN103398241A (en) * | 2013-08-08 | 2013-11-20 | 崔�国 | High-pressure flexible rubber hose and joint connecting method thereof |
| CN103925267A (en) * | 2014-03-19 | 2014-07-16 | 刘龙权 | Composite material and metal connection structure and forming method thereof |
| CN204370574U (en) * | 2014-12-26 | 2015-06-03 | 南京工业大学 | Board plug type band enhancement mode wooden construction Tenon node |
| CN207736471U (en) * | 2018-01-16 | 2018-08-17 | 南京林业大学 | Adapt to the height-adjustable solid wood bench of child growth |
| CN111396484A (en) * | 2020-03-24 | 2020-07-10 | 西安联瑞科技实业有限责任公司 | Resin-based fiber composite material plate spring body, manufacturing method thereof and plate spring assembly |
| CN212455075U (en) * | 2020-07-30 | 2021-02-02 | 西南交通大学 | Continuous fiber reinforced composite material connecting structure |
Non-Patent Citations (1)
| Title |
|---|
| 高佳佳;楚珑晟;马天阳;高朋;: "纤维增强树脂基复合材料连接结构强度与失效分析", 航空制造技术, no. 11, 1 June 2020 (2020-06-01), pages 94 - 101 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113085226A (en) * | 2021-04-12 | 2021-07-09 | 三一重能股份有限公司 | Mixed material pultrusion plate, wind power blade and wind power generator set |
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