CN212979447U - Novel composite board - Google Patents
Novel composite board Download PDFInfo
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- CN212979447U CN212979447U CN202021786747.1U CN202021786747U CN212979447U CN 212979447 U CN212979447 U CN 212979447U CN 202021786747 U CN202021786747 U CN 202021786747U CN 212979447 U CN212979447 U CN 212979447U
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- 239000002131 composite material Substances 0.000 title claims abstract description 106
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 43
- 239000004416 thermosoftening plastic Substances 0.000 claims abstract description 42
- 239000004744 fabric Substances 0.000 claims abstract description 34
- 229920005989 resin Polymers 0.000 claims abstract description 21
- 239000011347 resin Substances 0.000 claims abstract description 21
- 239000011162 core material Substances 0.000 claims abstract description 20
- 239000012790 adhesive layer Substances 0.000 claims abstract description 11
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 229920001187 thermosetting polymer Polymers 0.000 claims description 17
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 10
- JUPQTSLXMOCDHR-UHFFFAOYSA-N benzene-1,4-diol;bis(4-fluorophenyl)methanone Chemical compound OC1=CC=C(O)C=C1.C1=CC(F)=CC=C1C(=O)C1=CC=C(F)C=C1 JUPQTSLXMOCDHR-UHFFFAOYSA-N 0.000 claims description 10
- 239000003365 glass fiber Substances 0.000 claims description 10
- 229920002530 polyetherether ketone Polymers 0.000 claims description 10
- 239000004760 aramid Substances 0.000 claims description 9
- 229920003235 aromatic polyamide Polymers 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011230 binding agent Substances 0.000 claims description 2
- 229920001652 poly(etherketoneketone) Polymers 0.000 claims description 2
- 229920007790 polymethacrylimide foam Polymers 0.000 claims description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 2
- 229920013730 reactive polymer Polymers 0.000 claims description 2
- 229920005992 thermoplastic resin Polymers 0.000 claims description 2
- 241000264877 Hippospongia communis Species 0.000 description 16
- 239000012815 thermoplastic material Substances 0.000 description 14
- 239000000463 material Substances 0.000 description 10
- 238000000465 moulding Methods 0.000 description 9
- 239000003292 glue Substances 0.000 description 8
- 230000008439 repair process Effects 0.000 description 8
- 229920006231 aramid fiber Polymers 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 239000010410 layer Substances 0.000 description 6
- 239000002313 adhesive film Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000009863 impact test Methods 0.000 description 4
- 239000011159 matrix material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003860 storage Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000004593 Epoxy Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010382 chemical cross-linking Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
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- 238000001746 injection moulding Methods 0.000 description 1
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- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000012783 reinforcing fiber Substances 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The present disclosure provides a novel composite panel, comprising: the thermoplastic composite material skin is formed by integrally covering a fabric and a fiber reinforced thermoplastic composite material, wherein the first surface of the fabric is impregnated with resin, and the second surface of the fabric is not impregnated with resin; an adhesive layer, the second side of the fabric being adjacent to the adhesive layer; and a core material, the adhesive layer being disposed on an upper surface and a lower surface of the core material.
Description
Technical Field
The disclosure relates to the field of composite part manufacturing, in particular to a novel composite board.
Background
The aramid fiber paper honeycomb composite material has excellent performances of light weight, high strength, flame retardance, environmental protection, corrosion resistance, fatigue resistance and the like, and is widely applied to high-end fields of aerospace, rail transit, war industry and the like. Generally, aramid honeycombs are often combined with thermoset composite skins to form sandwich structures, which can significantly reduce product mass. Has the advantages of effectively reducing weight, reducing corrosion, improving noise, damping and the like.
At present, composite materials formed by thermosetting prepregs have a series of defects of long forming period, poor impact toughness, short prepreg storage time, difficult repair of local damage, poor humidity resistance and the like, are difficult to recover, and have high recovery cost.
The thermoplastic material has the remarkable advantages of high toughness, high impact resistance and damage tolerance, humidity and heat resistance, unlimited storage period, short molding period, high production efficiency, easy repair and the like, and can be recycled.
The composite material is compounded with the aramid fiber honeycomb, so that the moisture and heat resistance, the impact resistance and the high damage tolerance of the aramid fiber honeycomb composite board can be effectively improved under the condition that the mechanical property of the product is not influenced, the aramid fiber honeycomb composite board is easy to repair and recycle, and meanwhile, the raw materials are easy to store, and the production efficiency is high.
The composite material skin used by the prior aramid fiber honeycomb composite board is a thermosetting fiber composite material which can provide better mechanical property, but has a series of defects of long forming period, poor impact toughness, short prepreg storage time, difficult repair of local damage, poor moisture and heat resistance and the like, is difficult to recover, and has higher recovery cost.
Although the current thermoplastic composite material has the remarkable advantages of high toughness, high impact resistance and damage tolerance, humidity and heat resistance, infinite storage period, short molding period, high production efficiency, easy repair and the like, the thermoplastic composite material can be recycled. But the material is not easy to be compounded and bonded with other materials (such as thermosetting materials, metal materials and the like). Therefore, at present, thermoplastic composite materials are generally used alone or assembled with other materials, but almost no fiber reinforced thermoplastic composite materials or thermoplastic materials are used in sandwich composite structures (such as aramid fiber honeycombs, aluminum honeycombs, foams and the like).
In addition, the problem of composite bonding of thermoplastic materials or thermoplastic composite materials and other materials is a barrier which limits the wide application of the thermoplastic materials or thermoplastic composite materials and is a big problem which needs to be solved by breakthrough in the prior art.
Disclosure of Invention
According to the composite sandwich structure, the thermoplastic composite material skin is used as the surface layer of the composite board, so that the problems of poor impact resistance, low damage tolerance, poor humidity resistance, difficult repair and difficult recovery of the conventional thermosetting composite material skin composite sandwich structure are effectively solved under the condition of ensuring the mechanical property requirement. Therefore, the sandwich structure can be better applied under a severer condition, and the lightweight design and development of high-end equipment are promoted.
The method can effectively solve the problem of composite bonding of the thermoplastic material or the thermoplastic composite material and the core material by adopting a novel composite process method.
In order to solve at least one of the above technical problems, the present disclosure provides a novel composite panel, including:
the thermoplastic composite material skin is formed by integrally covering a fabric and a thermoplastic composite material, wherein the first side of the fabric is impregnated with resin, and the second side of the fabric is not impregnated with resin;
an adhesive layer, the second side of the fabric being adjacent to the adhesive layer; and
and a core material, wherein the adhesive layers are arranged on the upper surface and the lower surface of the core material.
In a preferred embodiment, in a thermoplastic composite skin, a fabric is treated, a portion of which is embedded in the thermoplastic material, thermoplastic composite board (or prepreg, etc.), and a portion of which is exposed at the skin surface.
In a preferred embodiment, a prepreg layer is further included between the fabric and the core material. Thereby obtaining better mechanical property.
In a preferred embodiment, the fabric is selected from one or more of glass fibre, carbon fibre or aramid.
The thermoplastic material is environment-friendly, has excellent anti-corrosion performance, elasticity and impact resistance, and can enhance the anti-corrosion performance and the impact resistance of the thermoplastic composite material.
As used herein, the term "thermoplastic composite" refers to a composite made from a thermoplastic material as a matrix and various fibers as reinforcement.
In contrast to thermoset composites, the one-step curing process of thermoplastics does not require catalysts, ovens, or autoclaves. This rapid cure cycle is responsible for the application of thermoplastic composites in mass production processes such as injection molding. Thermoplastic polymers do not undergo chemical crosslinking after curing and can therefore be remelted and reformed. This provides unique post-forming capability and addresses the disadvantage of thermoset composites that cannot be recycled. In fact, many believe that its recyclability is critical to future growth.
Generally, the heat resistance of thermoplastic composites is around 100 ℃. The service temperature of the thermoplastic material reinforced by the glass fiber can be greatly improved. The water resistance and dielectric properties of thermoplastic composites are generally superior to those of thermoset composites. Moreover, the thermoplastic material has better processing performance than the thermosetting material, can be molded for many times, can recycle waste materials and the like.
Preferably, the thermoplastic composite is a fiber reinforced thermoplastic composite.
In a preferred embodiment, the core material is selected from one or more of aramid honeycomb, aluminum honeycomb, PMI foam.
In a preferred embodiment, the resin is selected from one or more of the thermoplastic resins PPS, PEEK, PEKK, PC, PET, TPU, PA6, PA66, PP, PE.
In a preferred embodiment, the binder is one or more of a thermosetting resin, a reactive polymer.
The present disclosure also provides a method for preparing a novel composite board, which includes:
impregnating resin on the first surface of the fabric, and then coating the first surface of the fabric and the thermoplastic composite material into a whole to prepare a thermoplastic composite material skin capable of being glued;
arranging adhesive layers, preferably adhesive films, on the upper surface and the lower surface of the cut core material;
the second surface of the fabric is not impregnated with resin and is coated on the adhesive layers of the upper surface and the lower surface of the core material respectively;
and (3) applying pressure and temperature to carry out curing molding, and demoulding to obtain the novel composite board with the surface being the thermoplastic composite material skin.
In a preferred embodiment, the core composite forming pressure is 0.1-0.5MPa, preferably 0.3 MPa.
In a preferred embodiment, the temperature is 60 to 150 ℃, preferably 120 ℃.
In a preferred embodiment, the consolidation forming is selected from one or more of vacuum bagging, autoclave forming and hot press forming.
Compared with the prior art, the composite board effectively solves the problems of poor impact resistance, poor humidity resistance, low damage tolerance, difficult repair and difficult recovery of the prior art under the condition of ensuring excellent performances of light weight, high strength, fatigue resistance and the like of the novel composite board. When the thermosetting composite material is impacted, the matrix resin is easy to crack and damage, and even the reinforced fiber is easy to break. And the delamination, the package and the like are invalid due to partial defect damage in a high-temperature and high-humidity environment. When the thermoplastic material or the thermoplastic composite material is impacted, plastic deformation can occur, and the problems of matrix fracture damage, layering, package and the like of the thermosetting composite material can not occur.
The thermoplastic material and the thermoplastic composite material have smooth surfaces and low surface energy, common adhesives are difficult to bond, and when the adhesives are used for bonding plastics, thermosetting resin and metal materials, failure can occur on the bonding surfaces of the thermosetting composite material and the metal material. The present disclosure provides a new thermoplastic composite skin, which is effectively cemented with other materials through a fabric transition layer; one part of the fabric is embedded into the thermoplastic composite material, and the other part of the fabric is provided with a bonding part which can realize the bonding of common structural adhesive to form a complex, thereby realizing the adhesive bonding of the thermoplastic composite material and other materials.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the principles of the disclosure.
Fig. 1 shows a schematic view of an exemplary embodiment of the novel composite panel of the present disclosure.
Reference numerals
1. A thermoplastic composite skin;
2. a fabric;
3. bondlines/(and/or prepreg layers);
4. a core material.
Detailed Description
The present disclosure will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are for purposes of illustration only and are not to be construed as limitations of the present disclosure. It should be further noted that, for the convenience of description, only the portions relevant to the present disclosure are shown in the drawings.
It should be noted that the embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict. The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Examples
Example 1
Impregnating PC resin on one surface of the grid fabric glass fiber, and then coating the grid fabric glass fiber and the PC thermoplastic material into a whole to prepare a PC thermoplastic composite material skin capable of being glued;
placing a PC thermoplastic composite material skin on a mould, wherein the outer surface of the PC thermoplastic composite material skin faces to the mould surface, and isolating the mould surface by using an isolation film; applying a glue layer, preferably laying a glue film, on the exposed surface of the fabric without resin impregnation serving as a glue joint surface;
laying the cut aramid fiber honeycomb core material on the adhesive film;
laying the cut adhesive film on a core material;
laying another thermoplastic composite material skin, taking the exposed surface of the fabric without impregnated resin as a gluing surface, taking the outer surface of the fabric facing outwards, and isolating the surface of the mould by using an isolating film;
and (3) applying 0.3MPa pressure (preferably core material composite molding pressure) and the glue film curing temperature of 120 ℃ (preferably prepreg) to perform curing molding (autoclave molding), and demolding to obtain the novel composite board with the surface being the PC composite material skin.
Example 2
Soaking PEEK resin on one surface of the grid fabric carbon fiber, and then combining the grid fabric carbon fiber and a PEEK plate into a whole to prepare a PEEK composite material skin capable of being glued;
placing a PEEK composite material skin on a mold, wherein the outer surface of the PEEK composite material skin faces the mold surface, and isolating the PEEK composite material skin from the mold surface by using an isolation film; applying a glue layer, preferably laying a glue film, on the exposed surface of the fabric without resin impregnation serving as a glue joint surface;
then laying a prepreg (reinforcing fiber: glass fiber; resin is epoxy resin);
laying the cut core aluminum honeycomb on a prepreg;
laying the cut prepreg on a core material;
laying an adhesive film on the prepreg layer;
laying another PEEK composite material skin, taking the exposed surface of the fabric without resin impregnation as a glue joint surface, and isolating the surface of the mold by an isolating film, wherein the exposed surface of the fabric is downward;
and applying the pressure of 0.3MPa (preferably the composite molding pressure of the core material) and the curing temperature of the adhesive film of 130 ℃ (preferably the curing temperature of the prepreg) to perform curing molding (hot press molding), and demolding after the completion to obtain the novel composite board with the surface being the PEEK composite skin.
Comparative example 1 is a glass fiber phenolic aramid honeycomb composite panel.
Comparative example 2 is a glass fiber epoxy aramid honeycomb composite panel.
Impact resistance test
Impact of falling ball: the steel ball has a diameter of 50mm and a weight of 500 g. The steel ball impacts the surface of the sample from a 2000mm high altitude free fall, the depth of impact forming depression is measured, the experiment is repeated 3 times for each sample, and the average value is recorded.
The composite panels thus obtained were subjected to a falling ball impact test, and the results are shown in table 1 below.
Comparative example 1 is a ball drop impact test of a glass fiber phenolic aramid honeycomb composite panel.
Comparative example 2 is a falling ball impact test of a glass fiber epoxy aramid honeycomb composite panel.
TABLE 1 falling ball impact test Performance of composite boards
As can be seen from table 1, the composite boards obtained in comparative examples 1 and 2 have significant pits and are also subject to adhesive delamination when the composite boards are impacted by falling balls, while the composite boards obtained in example 1 and comparative examples 1 and 2 use thermosetting composite materials.
The novel composite board disclosed by the invention has excellent performances of light weight, high strength, fatigue resistance and the like, and effectively solves the problems of poor impact resistance, poor humidity resistance, low damage tolerance, difficulty in repair and difficulty in recovery in the prior art. When the thermoplastic material or the thermoplastic composite material is impacted, plastic deformation can occur, and the problems of matrix fracture damage, layering, package and the like of the thermosetting composite material can not occur. The process technology has simple and quick operation process and low requirement on operators, and can realize high-efficiency, low-cost and high-quality batch production.
In the description herein, reference to the description of the terms "one embodiment/mode," "some embodiments/modes," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/mode or example is included in at least one embodiment/mode or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to be the same embodiment/mode or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/aspects or examples and features of the various embodiments/aspects or examples described in this specification can be combined and combined by one skilled in the art without conflicting therewith.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
It will be understood by those skilled in the art that the foregoing embodiments are merely for clarity of illustration of the disclosure and are not intended to limit the scope of the disclosure. Other variations or modifications may occur to those skilled in the art, based on the foregoing disclosure, and are still within the scope of the present disclosure.
Claims (7)
1. A novel composite panel, comprising:
the thermoplastic composite material skin is formed by integrally covering a fabric and a thermoplastic composite material, wherein the first side of the fabric is impregnated with resin, and the second side of the fabric is not impregnated with resin;
an adhesive layer, the second side of the fabric being adjacent to the adhesive layer; and
and a core material, wherein the adhesive layers are arranged on the upper surface and the lower surface of the core material.
2. The novel composite panel according to claim 1, wherein a portion of the fabric is embedded in a thermoplastic or thermoplastic composite skin.
3. The novel composite board according to claim 1, wherein the fabric is selected from one of glass fiber, carbon fiber or aramid.
4. The novel composite board according to claim 1, wherein the core material is selected from one of aramid honeycomb, aluminum honeycomb, PMI foam.
5. The novel composite board according to claim 1, wherein the resin is selected from one of thermoplastic resins PPS, PEEK, PEKK, PC, PET, TPU, PA6, PA66, PP, PE.
6. The novel composite board according to claim 1, wherein the binder is selected from one of a thermosetting resin and a reactive polymer.
7. The novel composite panel according to claim 1, wherein the thermoplastic composite material is a fiber reinforced thermoplastic composite material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786747.1U CN212979447U (en) | 2020-08-24 | 2020-08-24 | Novel composite board |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021786747.1U CN212979447U (en) | 2020-08-24 | 2020-08-24 | Novel composite board |
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| Publication Number | Publication Date |
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| CN212979447U true CN212979447U (en) | 2021-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844946A (en) * | 2020-08-24 | 2020-10-30 | 上海骏赐投资管理中心(有限合伙) | Novel composite board and preparation method thereof |
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- 2020-08-24 CN CN202021786747.1U patent/CN212979447U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111844946A (en) * | 2020-08-24 | 2020-10-30 | 上海骏赐投资管理中心(有限合伙) | Novel composite board and preparation method thereof |
| WO2022041358A1 (en) * | 2020-08-24 | 2022-03-03 | 上海骏赐投资管理中心(有限合伙) | Novel composite panel and production method therefor |
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