CN111113742A - Forming method of composite material part - Google Patents
Forming method of composite material part Download PDFInfo
- Publication number
- CN111113742A CN111113742A CN201911377083.5A CN201911377083A CN111113742A CN 111113742 A CN111113742 A CN 111113742A CN 201911377083 A CN201911377083 A CN 201911377083A CN 111113742 A CN111113742 A CN 111113742A
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- CN
- China
- Prior art keywords
- forming
- composite material
- composite
- material part
- microstructure
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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
- B29C33/00—Moulds or cores; Details thereof or accessories therefor
- B29C33/42—Moulds or cores; Details thereof or accessories therefor characterised by the shape of the moulding surface, e.g. ribs or grooves
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B11/00—Making preforms
- B29B11/06—Making preforms by moulding the material
Abstract
The invention provides a forming method of a composite material part, which comprises the following steps: the first step is as follows: manufacturing a micro-structure on the surface of a forming die by using a surface treatment technology; the second step is that: the method comprises the steps of mixing polymer fibers and resin, heating and pressurizing the mixture in a forming die for curing by adopting a composite material forming process to form a composite material part, and directly forming a microstructure on the surface of the composite material part. The forming method improves the adhesive strength of the composite material part by manufacturing the microstructure on the surface of the composite material part; the method combines the curing and forming process of the composite material with the surface pretreatment process before adhesive bonding, saves the surface pretreatment process step of the composite material part, saves the time and cost of the adhesive bonding process, and is suitable for the forming process of various composite materials.
Description
Technical Field
The invention belongs to the field of composite material part manufacturing, and particularly relates to a composite material forming method.
Background
In recent years, with the demand for lightweight in the fields of aerospace, automobiles and the like becoming higher and higher, polymer composite materials are applied more and more widely. The connection technology for polymer composite materials and parts currently mainly comprises: self-piercing Riveting (SPR), Flow drill Riveting (FDS), Adhesive Bonding (Adhesive Bonding), and the like.
SPR is a double-sided joining technique in which rivets are pressed into a joined member using riveting dies located on both sides of a workpiece, and the joined member is locked by plastic deformation generated when the rivets are pressed into a lower plate. Due to the low plasticity of polymer composites, it is often desirable to attach the polymer composites as SPR upper plates. FDS is a single-sided joining technique that softens the material being joined using high-speed rotation of a flow drill screw while screwing the screw into the material to effect a threaded connection. Due to the high temperatures generated during FDS joining, thermal damage to the polymer composite is typically experienced, which in turn affects its mechanical properties. Compared with the two connection modes, the adhesive connection has the advantages that the weight is increased less, the stress distribution is uniform, the mechanical property of the connected part cannot be weakened, the adhesive strength of the original composite material is low, the surface pretreatment is generally required before the gluing, and the time and the cost of the adhesive connection process of the composite material parts are increased.
Therefore, a new method for forming a composite material part is required to solve the above problems.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a method for forming a composite material part, which is used to solve the problems of long time and high cost of the composite material part adhesive bonding process in the prior art.
In order to achieve the above object, the present invention provides a method for forming a composite material part, comprising the steps of: the first step is as follows: manufacturing a micro-structure on the surface of a forming die by using a surface treatment technology; the second step is that: the method comprises the steps of mixing polymer fibers and resin, heating and pressurizing the mixture in a forming die for curing by applying a composite material forming process to form a composite material part, and directly forming a microstructure on the surface of the composite material part.
Preferably, the surface treatment techniques include surface roll forming, micromachining, plasma treatment, laser treatment, etching, and ultrasound-assisted hot pressing.
Preferably, the polymer fiber is one or a combination of several of hybrid long fiber, unidirectional long fiber, fiber woven fabric, short fiber, whisker and particle.
Preferably, the composite molding process includes, but is not limited to, injection molding, cast molding, laminate molding, hybrid compression molding, resin transfer molding, and compression molding.
Preferably, the resin is in particular a thermosetting resin or a thermoplastic resin.
Preferably, microstructures are provided where the composite part requires gluing.
Preferably, the microstructure of the surface of the composite part is determined by the composition, chemistry and adhesive strength of the composite.
As described above, the method for forming a composite material part of the present invention has the following beneficial effects:
(1) the microstructure is manufactured on the surface of the composite material part, so that the adhesive strength of the composite material part is improved;
(2) the curing and molding process of the composite material is combined with the surface pretreatment process before adhesive bonding, so that the surface pretreatment process step of the composite material part is omitted, and the time and the cost of the adhesive bonding process are saved;
(3) is suitable for the molding process of various composite materials.
Drawings
FIG. 1 is a schematic view of a method for forming a composite material part according to the present invention.
FIG. 2 is a schematic view of a composite part according to the present invention.
1 surface microstructure of a mold
2 Upper die
3 parts of composite material
4 lower die
5 part surface microstructure
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The invention relates to a forming method of a composite material part, which comprises the following steps: a method of forming a composite part, comprising the steps of: the first step is as follows: manufacturing a micro-structure on the surface of a forming die by using a surface treatment technology; the second step is that: the method comprises the steps of mixing polymer fibers and resin, placing the mixture into a forming die, heating, pressurizing and curing to form a composite part, and directly forming the microstructure on the surface of the composite part.
The invention combines the curing and forming process of the composite material with the surface pretreatment process before adhesive bonding, saves the surface pretreatment process step of the composite material part, saves the time and the cost of the adhesive bonding process, is suitable for the forming process of various composite materials, manufactures microstructures on the surface of the composite material and can improve the adhesive strength of the composite material part.
Specifically, as shown in fig. 1, the inner surface of the upper mold 2 of the forming mold in the present embodiment forms a mold surface microstructure 1 by a surface treatment technique, wherein the surface treatment technique includes surface roll forming, micromachining, plasma treatment, laser treatment, etching, and ultrasonic-assisted hot pressing; adopting a composite material forming process, mixing polymer fibers and resin, placing the mixture into a space between an upper die 2 and a lower die 4, heating and pressurizing to solidify the mixture to form a composite material part 3, wherein the composite material forming process comprises injection molding, casting molding, laminating molding, mixed compression molding, Resin Transfer Molding (RTM) and compression molding, the polymer fibers are one or a combination of a plurality of mixed long fibers, unidirectional long fibers, fiber woven fabrics, short fibers, whiskers and particles, and the resin is thermosetting resin or thermoplastic resin; after the surface of the composite material part 3 is cured and molded, a part surface microstructure 5 is formed, and the part surface microstructure 5 enables the surface of the composite material part 3 to be a non-smooth surface, so that the adhesive strength of the composite material part 3 can be improved, wherein the mold surface microstructure 1 and the part surface microstructure 5 are not limited to the positions shown in fig. 1 and 2, and the microstructure needs to be processed only at the place where the composite material part 3 needs to be adhered; the specific structure of the mold surface microstructure 1 and the part surface microstructure 5 is determined according to the composition of the composite material part 3, the chemical property of the composite material part 3, and the strength required by the part needing to be glued of the composite material part 3, and the shape of the part comprises, but is not limited to, teeth, pits, grooves and grids.
In conclusion, the forming method of the composite material part improves the adhesive strength of the composite material part by manufacturing the microstructure on the surface of the composite material part; the method combines the curing and forming process of the composite material with the surface pretreatment process before adhesive bonding, saves the surface pretreatment process step of the composite material part, saves the time and cost of the adhesive bonding process, and is suitable for the forming process of various composite materials. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. A method of forming a composite part, comprising the steps of: the first step is as follows: manufacturing a micro-structure on the surface of a forming die by using a surface treatment technology; the second step is that: the method comprises the steps of mixing polymer fibers and resin, heating and pressurizing the mixture in a forming die for curing by applying a composite material forming process to form a composite material part, and directly forming a microstructure on the surface of the composite material part.
2. A method of forming a composite part according to claim 1, wherein: the surface treatment techniques include surface roll forming, micromachining, plasma treatment, laser treatment, etching, and ultrasonic-assisted hot pressing.
3. A method of forming a composite part according to claim 1, wherein: the polymer fiber is one or a combination of a plurality of mixed long fibers, unidirectional long fibers, fiber woven fabrics, short fibers, whiskers and particles.
4. A method of forming a composite part according to claim 1, wherein: the composite material forming process comprises injection molding, casting molding, laminating molding, mixed compression molding, resin transfer molding and compression molding.
5. A method of forming a composite part according to claim 1, wherein: the resin is specifically a thermosetting resin or a thermoplastic resin.
6. A method of forming a composite part according to claim 1, wherein: and arranging a microstructure at the position where the composite material part needs to be glued.
7. A method of forming a composite part according to claim 1, wherein: the microstructure of the surface of the composite part is determined by the composition, chemical properties and adhesive strength of the composite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377083.5A CN111113742A (en) | 2019-12-27 | 2019-12-27 | Forming method of composite material part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911377083.5A CN111113742A (en) | 2019-12-27 | 2019-12-27 | Forming method of composite material part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111113742A true CN111113742A (en) | 2020-05-08 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911377083.5A Pending CN111113742A (en) | 2019-12-27 | 2019-12-27 | Forming method of composite material part |
Country Status (1)
| Country | Link |
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| CN (1) | CN111113742A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373061A (en) * | 2020-10-13 | 2021-02-19 | 航天特种材料及工艺技术研究所 | Composite material member and manufacturing method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995033612A1 (en) * | 1994-06-03 | 1995-12-14 | Reflexite Corporation | A reusable mold for forming a retroreflective structure |
| US5670096A (en) * | 1990-11-15 | 1997-09-23 | Minnesota Mining And Manufacturing Company | Retroreflective article comprising a transparent base sheet and nacreous pigment coating, method for making such a base sheet, and method for making a forming master |
| CN103797051A (en) * | 2011-09-06 | 2014-05-14 | 帝人株式会社 | Molded body with excellent surface designability and composed of fiber-reinforced composite material |
| CN104441408A (en) * | 2013-09-13 | 2015-03-25 | 联想(北京)有限公司 | Shell preparation method and electronic equipment |
-
2019
- 2019-12-27 CN CN201911377083.5A patent/CN111113742A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5670096A (en) * | 1990-11-15 | 1997-09-23 | Minnesota Mining And Manufacturing Company | Retroreflective article comprising a transparent base sheet and nacreous pigment coating, method for making such a base sheet, and method for making a forming master |
| WO1995033612A1 (en) * | 1994-06-03 | 1995-12-14 | Reflexite Corporation | A reusable mold for forming a retroreflective structure |
| CN103797051A (en) * | 2011-09-06 | 2014-05-14 | 帝人株式会社 | Molded body with excellent surface designability and composed of fiber-reinforced composite material |
| CN104441408A (en) * | 2013-09-13 | 2015-03-25 | 联想(北京)有限公司 | Shell preparation method and electronic equipment |
Non-Patent Citations (1)
| Title |
|---|
| 吴智勇等: "《建筑装饰材料》", 31 July 2015, 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112373061A (en) * | 2020-10-13 | 2021-02-19 | 航天特种材料及工艺技术研究所 | Composite material member and manufacturing method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200508 |
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| RJ01 | Rejection of invention patent application after publication |