TWM586669U - Multi-layered composite material structure - Google Patents

Abstract

This creation system discloses a composite multilayer structure. The composite multilayer structure includes a core layer that is a foam or honeycomb structure, and the composite multilayer structure includes the upper surface and the lower surface of the core layer, respectively. A first glue layer, a fiber material layer, a second glue layer, and a metal material layer are stacked, wherein the fiber material layer includes a fiber network structure, which is composed of a discontinuous plurality of fiber filaments. Non-directional distribution and intertwined with each other. In this way, compared with the conventional technology, the composite multi-layer structure of this creation can simultaneously possess the characteristics of light weight, high rigidity, fire resistance, heat insulation, abrasion resistance, and impact resistance.

Description

Composite multilayer structure

This creation is about a composite material, in particular, a multilayer structure of composite material that has the characteristics of light weight, high rigidity, fire resistance, heat insulation, abrasion resistance, and impact resistance.

According to the fact, metal materials are widely used as vehicles for automobiles, aircrafts, ships, and other vehicles. Other electronic equipment housings, sports equipment, and decorative materials can also be used in metal materials. It can be seen that metal materials are used in various fields. It is one of the indispensable important materials.

However, with the development of modern industry and technology, more and more structural devices have been required to be lightweight in order to meet the needs of the consumer or achieve better performance. For example, the inner structure of the bumper used in most cars is made of metal materials. Although it has the effect of impact resistance and fire prevention under a certain thickness, it also relatively increases the weight of the bumper, which will indirectly affect the car. Fuel consumption and acceleration performance.

As for the example of the bumper, if the materials used in its internal structure can be improved or changed so that the bumper can still be lightweight with impact resistance and fire protection, it will improve the performance of the car. Therefore, this creation is to develop a composite multilayer structure to meet the above needs.

In view of the problems of the above-mentioned conventional techniques, the purpose of this creation is to provide a composite material multilayer structure that can simultaneously possess the characteristics of light weight, high rigidity, fire resistance, heat insulation, abrasion resistance, impact resistance, and the manufacturing method thereof.

According to the purpose of this creation, a composite material multilayer structure is proposed, which includes: a core layer, which is a foam or honeycomb structure; two first glue layers, one side of each of the first glue layers is respectively connected to the core layer. Upper surface and lower surface; two fiber material layers, one side of each of the fiber material layers is connected to the opposite side of each of the first adhesive layers and the core layer, wherein the fiber material layer includes an adhesive resin structure And a fibrous web structure, the fibrous web structure is covered by the adhesive resin structure, and the fibrous web structure is formed by a plurality of discontinuous fiber filaments which are distributed non-directionally and are entangled with each other, and each of the fiber filaments is The distance is filled with the adhesive resin structure, and the average length of the plurality of fiber filaments is greater than or equal to 35 mm; two second glue layers, one side of each of the second glue layers is respectively connected with the fiber material layer and the The other side of the first glue layer is connected to the other side; and two metal material layers, one side of each of the metal material layers is respectively connected to the opposite side of the second glue layer connected to the fiber material layer.

According to the above technical features, the thickness of the core layer is 15 mm, the thickness of the fiber material layer is 1 mm to 5 mm, and the thickness of the metal material layer is 1 mm to 5 mm.

According to the above technical features, the thickness of the core layer is 15 mm, the thickness of the fiber material layer is 1 mm, and the thickness of the metal material layer is 1 mm.

According to the above technical features, the average length of the plurality of fiber filaments is greater than or equal to 100 mm and less than 500 mm.

According to the above technical features, the average length of the plurality of fiber filaments is greater than 100 mm and less than or equal to 500 mm.

According to the above technical features, each of the fiber filaments includes a plurality of fibers, and the adhesive resin structure is filled with a space between the plurality of fibers to cover the fibers.

According to the above technical features, at least one of the plurality of fibers is formed into two independent piles.

According to the above technical features, the piles are non-directionally distributed.

According to the above technical features, at least one of the fiber strands of the fiber web structure and at least one of the fiber strands of the other fiber strand are intertwined with each other to form a non-directional distribution.

According to the above technical features, at least one of the piles of the fiber web structure and at least one of the fiber strands and at least one of the other fiber strands of the fiber web are intertwined with each other to form a non-directional distribution.

According to the above technical features, at least one of the piles of the fiber web structure and at least one of the piles of the other fiber filaments are intertwined with each other to form a non-directional distribution.

According to the above technical features, the fiber filaments can be carbon fibers or glass fibers.

According to the above technical features, the adhesive resin structure may be composed of a thermosetting resin or a thermoplastic resin.

According to the above technical features, the adhesive resin structure may further include a solid filler, the solid filler is selected from the group consisting of calcium carbonate, magnesium oxide, zinc stearate, and aluminum hydroxide. (Aluminum hydroxide), Antimony oxide, Polybrominated diphenyl ethers, polybrominated biphenyls, tetrabromobisphenol A, hexabromocyclodeca At least one of the group consisting of dioxane (Hexabromocyclododecane) and N, N-dimethylaniline (N, N-Dimethylaniline).

According to the above technical characteristics, the diameter of the fiber filament is preferably between 3 μm and 30 μm.

According to the above technical features, the total fiber content in the fiber material layer accounts for 5% to 30% by weight of the fiber material layer.

According to the above technical features, the core layer is made of Polyurethane, Polyvinyl Chloride, polyethylene terephthalate, acrylic, aluminum, paper or fiber.

According to the purpose of this creation, a method of manufacturing a composite material multilayer structure is further proposed, which is suitable for manufacturing the composite material multilayer structure as described above. The manufacturing method of the composite material multilayer structure includes the following steps: a material supply step: providing The core layer, the two fiber material layers, the two metal material layers, and the resin material; a first bonding step: uniformly coating a resin material on one surface of the core layer to form the first glue layer, and One of the fiber material layers is attached to the first adhesive layer, and then a resin material is applied to the fiber material layer to form the second adhesive layer, and then one of the metal material layers is attached to the second adhesive layer. Layer to form a semi-finished structure; a second bonding step: flip the semi-finished structure and apply a resin material uniformly to the opposite surface of the core layer to form the first glue layer, and then another fiber A material layer is attached to the first glue layer, then a resin material is applied to the fiber material layer to form the second glue layer, and then another metal material layer is attached to the second glue layer; A forming step: applying pressure to the two metal material layers at opposite ends so that the core layer, the two first glue layers, the two fiber material layers, the two second glue layers, and the Two metal material layers are formed into the composite material Multi-layered structure. The molding step is not limited, and examples include hot-press molding, vacuum pressure molding, and vacuum resin injection molding.

As mentioned above, the composite multilayer structure of this creation is mainly composed of a core layer, a fiber material layer, and a metal material layer, and the core layer is made of polyurethane, polyvinyl chloride, or paper and other materials in a foam or honeycomb shape. , Used in the structure to have buffering and other functions; the plurality of fiber filaments of the fiber material layer are entangled with each other to form a non-directional distribution, so the fiber material layer tear strength, bending strength and bending modulus in all directions It can reach uniformity and can resist destructive forces from all directions. The metal material layer can be made of aluminum and other materials. As the outermost layer of the structure, it can have functions such as fire resistance and impact resistance. Compared with the conventional structure made of metal materials, In addition to the characteristics of high rigidity, fire resistance, heat insulation, abrasion resistance, and impact resistance, this creation also reduces the weight of the overall structure due to the material characteristics of the core layer and the fiber material layer to achieve lightweight. Purpose.

100‧‧‧ composite multilayer structure

10‧‧‧ core layer

20‧‧‧ the first adhesive layer

30‧‧‧fiber material layer

31‧‧‧Adhesive resin structure

32‧‧‧fiber web structure

40‧‧‧Second glue layer

50‧‧‧ metal material layer

S1‧‧‧ Provide material steps

S2‧‧‧First Laminating Step

S3‧‧‧Second Laminating Step

S4‧‧‧Forming steps

10a‧‧‧first resin layer

20a‧‧‧Second resin layer

30a‧‧‧mixed layer

301a‧‧‧Adhesive resin layer

302a‧‧‧fibril web structure

P1a‧‧‧The first plastic film

P2a‧‧‧Second plastic film

S1a‧‧‧ Provide material steps

S2a‧‧‧ Laminating steps

S3a‧‧‧Compression step

S4a‧‧‧Removal step

S5a‧‧‧Hot pressing step

FIG. 1 is a first schematic diagram of the first embodiment of the composite material multilayer structure of the creation.

FIG. 2 is a second schematic diagram of the first embodiment of the composite multilayer structure of the creation.

FIG. 3 is a schematic diagram of a second embodiment of the composite multilayer structure of the present invention.

Figure 4 is a flowchart of the manufacturing method of the composite multilayer structure of the creation.

Figure 5 is a schematic diagram of the manufacturing method of the composite multilayer structure of this creation.

Figure 6 is a schematic diagram of the materials used to make the original web structure.

Figure 7 is a flow chart of the manufacturing method of the created fiber web structure.

Figure 8 is a flowchart of the manufacturing method of the created fiber web structure.

In order to help the examiners understand the technical characteristics, content and advantages of this creation and the effects that it can achieve, we hereby combine this creation with the drawings and explain it in the form of examples in detail below. The drawings used in it are The main purpose is only for the purpose of illustration and supplementary instructions. It may not be the actual proportion and precise configuration after the implementation of the creation. Therefore, the proportion and configuration relationship of the attached drawings should not be interpreted and limited to the scope of rights of the actual implementation of the creation. He Xianming.

Please refer to FIG. 1, which is a first schematic diagram of the first embodiment of the composite multilayer structure of the present invention. As shown in the figure, the composite material multi-layer structure 100 of this creation includes a core layer 10, two first glue layers 20, two fiber material layers 30, two second glue layers 40, and two metal material layers 50.

In this embodiment, the core layer 10 may have a foamed structure. For example, the core layer 10 may be made of Polyurethane (PU), Polyvinyl Chloride (PVC), or polyethylene terephthalate. PET), acrylic and other materials. The first adhesive layer 20 and the second adhesive layer 40 can be made of resin or other adhesive materials. The metal material layer 50 may be aluminum, for example, but is not limited thereto.

The fiber material layer 30 includes an adhesive resin structure 31 and a fiber network structure 32. The fiber web structure 32 is covered by the adhesive resin structure 31, and the fiber web structure 32 is formed by a plurality of discontinuous fiber filaments which are distributed non-directionally and are entangled with each other. Filled with the adhesive resin structure 31, wherein the average length of the plurality of fiber filaments is greater than or equal to 35 mm and less than or equal to a predetermined average length to form the aforementioned "unconnected Continued ", for example, the average length is greater than or equal to 250mm and less than 500mm; the average length is greater than 250mm and less than or equal to 500mm, preferably, the length of each fiber filament is greater than or equal to 35mm and less than or equal to 500mm .

In the above, the plurality of fiber filaments are entangled with each other to form a non-directional distribution. The non-directional distribution means that the fiber network structure 32 is projected on a two-dimensional plane (not shown in the figure), and the plurality of fiber filaments are projected. The projections on the two-dimensional plane extend in random or random directions. Since the plurality of fiber filaments are intertwined with each other to form a non-directional distribution, and the average length of the plurality of fiber filaments is greater than or equal to 35 mm, the physical properties of the fiber material layer 30 are uniform in all directions, in other words, the fiber material layer 30 The tear strength, flexural strength, and flexural modulus in all directions can be uniform, which can resist the destructive force from all directions.

Further, the fiber filament may include a single fiber or a plurality of fibers, for example, the fiber filament may include one of the fibers or one hundred of the fibers or between one and one hundred of the fibers. In the embodiment where the fiber filaments include a plurality of the fibers, the fiber filaments are not covered with a slurry, and the adhesive resin structure 31 is capable of infiltrating and filling the space between the plurality of fibers to cover the fibers. As a result, the fiber material layer 30 is further strengthened. In addition, at least one of the plurality of fibers in the fiber filaments forms two independent piles, the two piles are non-directionally distributed, and the adhesive resin structure 31 also covers the piles, thus strengthening The tear strength, flexural strength, and flexural modulus of the fiber material layer 30 in all directions were uniform. Preferably, the plurality of fibers have a plurality of the piles.

It is particularly worth noting that at least one of the fiber strands of the fiber web structure 32 and at least one of the fiber strands of the other fiber strand are intertwined with each other to form a non-directional distribution. At least one of the fiber webs 32 and at least one of the fiber filaments Each of the piles and at least one of the fibers of the other fiber yarn are entangled with each other to form a non-directional distribution; more preferably, at least one of the fibers of the fiber web structure 32 is at least one of the fibers The fleece and at least one of the piles of the other fiber filaments are intertwined with each other to form a non-directional distribution. In this way, the porosity of the fiber web structure 32 is reduced, and the tear strength, flexural strength, and flexural modulus of the fibrous material layer 30 in all directions are enhanced again and can be uniform.

Among the above, the fiber yarn or the fiber may preferably be carbon fiber, glass fiber or recycled fiber, and the diameter of the fiber yarn is between 3 μm and 30 μm; in the embodiment where the fiber yarn or the fiber system is carbon fiber The diameter of the carbon fiber is between 3 μm and 8 μm. In the embodiment where the fiber filament or the fiber is a glass fiber, the diameter of the glass fiber is between 20 μm and 35 μm. In addition, the total fiber content in the fiber material layer 30 may be between 5% and 30% of the weight percentage in the fiber material layer 30.

In the above, the adhesive resin structure 31 may be composed of a thermosetting resin or a thermoplastic resin; further, the adhesive resin structure 31 may include a solid filler, the solid filler is selected from the group consisting of calcium carbonate, Magnesium oxide, zinc stearate, aluminum hydroxide, antimony oxide, polybrominated diphenyl ethers, polybrominated biphenyls, tetrabromo At least one of the group consisting of bisphenol A (tetrabromobisphenol A), hexabromocyclododecane (Hexabromocyclododecane), and N, N-Dimethylaniline.

Please refer to FIG. 2 together, which is a second schematic diagram of the first embodiment of the composite material multilayer structure of this creation. As shown in the figure, one surface of each of the first adhesive layers 20 is respectively connected to the upper surface and the lower surface of the core layer 10; one surface of each of the fiber material layers 30 is respectively connected to each of the first layers. The opposite side of an adhesive layer 20 connected to the core layer 10; one side of each of the second adhesive layers 40 is respectively connected to the opposite other side of each of the fiber material layers 30 and the first adhesive layer 20; One side of the metal material layer 50 is connected to the opposite side of each of the second adhesive layers 40 and the fiber material layer 30 respectively. Wherein, the core layer 10, the two first glue layers 20, the two fiber material layers 30, the two second glue layers 40, and the two metal material layers 50 can form the composite material multi-layer structure through a forming method. 100.

In the above, the thickness of the core layer 10 is preferably 15 mm; the thickness of the fibrous material layer 30 is preferably 1 mm to 5 mm, most preferably 1 mm; and the thickness of the metal material layer 50 is preferably 1 mm to 5 mm, most preferably It is 1mm. Wherein, the thickness ratios of the fiber material layer 30 and the metal material layer 50 to the overall structure can be adjusted according to requirements, and are not limited by the above-mentioned examples of the structure.

Specifically, the composite multilayer structure 100 is mainly composed of the core layer 10, the fiber material layer 30, and the metal material layer 50, and the core layer 10 is made of a material such as polyurethane, polyvinyl chloride, or paper. Foamed or honeycomb-shaped, used for buffering and other functions in the structure; the plurality of fiber filaments of the fiber material layer 30 are intertwined with each other to form a non-directional distribution, so the fiber material layer has tear strength and bending resistance in all directions The strength and flexural modulus can be uniform, which can resist the destructive force from all directions; the metal material layer 50 can be made of aluminum and other materials, and the outermost layer of the structure can have functions such as fire resistance and impact resistance; Structures made of metallic materials. In addition to the characteristics of high rigidity, fire resistance, heat insulation, abrasion resistance, and impact resistance, the overall structure is made by the material characteristics of the core layer 10 and the fiber material layer 30. The weight can be reduced to achieve the purpose of light weight.

Please refer to FIG. 3 together, which is a schematic diagram of the second embodiment of the multilayer structure of the composite material for this creation. This second embodiment is different from the first embodiment in that the core layer 10 is a honeycomb structure, and it is preferably made of aluminum, paper, or fiber.

Based on the above, this creation also provides a method for manufacturing a multilayer structure of composite materials. Please refer to FIG. 4 and FIG. 5 at the same time. The manufacturing method of the composite material multilayer structure includes at least the following process steps: a material supply step S1: providing the core layer 10, the two fiber material layers 30, the two metal material layers 50, and a resin material.

A first bonding step S2: uniformly coating a resin material on a surface of the core layer 10 to form the first adhesive layer 20, and attaching one of the fiber material layers 30 to the first adhesive layer 20, A resin material is coated on the fiber material layer 30 to form the second glue layer 40, and then one of the metal material layers 50 is attached to the second glue layer 40 to form a semi-finished structure.

A second bonding step S3: the semi-finished product structure is reversed, and the resin material is evenly coated on the opposite surface of the core layer 10 to form the first adhesive layer 20, and then another fiber material layer 30 is pasted The first adhesive layer 20 is attached, and then a resin material is applied to the fiber material layer 30 to form the second adhesive layer 40, and then another metal material layer 50 is attached to the second adhesive layer 40.

A forming step S4: applying pressure on the two metal material layers 50 at opposite ends so that the core layer 10, the two first adhesive layers 20, the two fiber material layers 30, and the two first The two adhesive layers 40 and the two metal material layers 50 are formed into the composite material multilayer structure 100. The molding step is not limited, and examples include hot-press molding, vacuum pressure molding, and vacuum resin injection molding.

Please refer to the following Table 1, which is the result of comparing the flexural strength and tensile strength of the five structural patterns of the composite multilayer structure 100 with the conventional comparative example 1 of this creation.

First of all, in Table 1, the overall structure of Comparative Example 1 is made of metal materials as in the conventional technology; Examples 1 to 5 are the composite multilayer structures 100 of this creation, and The core layer 10 is a fixed thickness condition, and only the thickness ratio of the fiber material layer 30 and the metal material layer 50 to the overall structural thickness is calculated. The thickness ratio of the fiber material layer 30 and the metal material layer 50 of the first embodiment is calculated. It is 1: 9. The thickness ratio of the fibrous material layer 30 and the metal material layer 50 in the second embodiment is 3: 7, and the thickness ratio of the fibrous material layer 30 and the metal material layer 50 in the third embodiment is 5 : 5, the thickness ratio of the fiber material layer 30 and the metal material layer 50 in the fourth embodiment is 7: 3, and the thickness ratio of the fiber material layer 30 and the metal material layer 50 in the fifth embodiment is 9: 1 .

As can be seen from Table 1, in the first embodiment to the fifth embodiment of the composite multilayer structure 100 of the fibrous material layer 30 with various thickness ratios, the bending strengths of the composite materials are 186.2Mpa, 201.7Mpa, 238.4Mpa, 270Mpa, respectively. And 306.6Mpa, the data results are better than the flexural strength of the comparative example of 175Mpa; and the tensile strength of Examples 1 to 5 The values are 222.9Mpa, 271.4Mpa, 326.3Mpa, 389.1Mpa, and 461.5Mpa. The data results are also better than the tensile strength of the comparative example of 200.8Mpa. In addition, it is obvious that the thickness of the fiber material layer 30 The higher the ratio, the better the bending strength and tensile strength of the composite multilayer structure 100. In summary, when the composite multilayer structure 100 of this creation is pursuing lightweight characteristics, the flexural strength and tensile strength of the composite multilayer structure 100 can also be better than the conventional technology using only metal materials. Maintain or improve the quality and strength of the overall structure.

Please refer to FIG. 6 to FIG. 8 together. The manufacturing method provided by the author for the fiber web structure 32 includes the following process steps: a material supply step S1a: providing the first plastic film P1a and the first resin layer 10a. The fibril web structure 302a, the second resin layer 20a, and the second plastic film P2a. The first resin layer 10a is coated on the lower surface of the first plastic film P1a. The second resin layer 20a is Covered on the upper surface of the second plastic film P2a.

A laminating step Sa2: attaching the first resin layer 10a to the upper surface of the fibrous web structure 302a, and attaching the second resin layer 20a to the lower surface of the fibrous web structure 302a.

A pressing step S3a: applying pressure on the upper surface of the first plastic film P1a and the lower surface of the second plastic film P2a, so that a part of the first resin layer 10a forms the adhesive resin layer 301a and covers the The fibrous web structure 302a to form the mixed layer 30a; or a part of the second resin layer 20a to form the adhesive resin layer 301a and cover the fibrous web structure 302a to form the mixed layer 30a; or A part of the first resin layer 10a and a part of the second resin layer 20a are in contact with each other to form the adhesive resin layer 301a and cover the fibrous web structure 302a to form the mixed layer 30a.

Basically, after the aforementioned material supplying step S1a, the laminating step Sa2 and the pressing step S3a are completed, the fiber web structure 32 can be completed. Subsequently, a film removing step S4 can be continued during use. The removing step S4 is to separate the first plastic film P1a from the first resin layer 10a, and separate the second plastic film P2a from the second resin layer 20a to form the fiber web structure 32.

Of course, as described above, when any one of the adhesive resin layer 301a, the first resin layer 10a, and the second resin layer 20a is the thermosetting resin, a hot pressing step S5 can be continued after the film removing step S4. The hot-pressing step S5 is to perform a hot-pressing process on the fiber web structure 32 obtained by performing the stripping step S4, such as any one of the adhesive resin layer 301a, the first resin layer 10a, and the second resin layer 20a. It is a vinyl resin. One hot pressing temperature of the hot pressing process can be set between 110 and 300 degrees Celsius, and one hot pressing pressure of the hot pressing process can be set between 20 kgf / cm ² and 200 kgf / cm. Between ² , the hot pressing time of the hot pressing process can be set between 0.5 minutes and 10 minutes.

The results of Comparative Example 1, Example 1, Example 2 and Example 3 implemented in accordance with the aforementioned method of manufacturing the fiber web structure 32 are shown in Table 2. In Comparative Example 1, Example 1, Example 2, and Example 3, the adhesive resin layer 301a, the first resin layer 10a, and the second resin layer 20a are all vinyl resins, and the heat-pressing temperature is set at Celsius. At 130 degrees, the hot-pressing pressure was set at 150 kgf / cm ² and the hot-pressing time was 2 minutes. The fibril web structure 302a was made of carbon fibers.

In Table 2, the fiber web structure 32 of Example 1 and Comparative Example 1 had the same weight of 4000 g / m ² and the same total fiber content of 30 wt%; the difference between Example 1 and Comparative Example 1 was that The average length of the plurality of fiber filaments used was 35 mm, while Comparative Example 1 used a plurality of the fiber filaments having an average length of 25 mm; since Example 1 used a plurality of the fiber filaments having a longer average length, The phenomenon that the plurality of the fiber filaments, the plurality of the fibers, and the plurality of the piles of each other are intertwined with each other to form a non-directional distribution is larger than that of Comparative Example 1. Therefore, the flexural strength of Example 1 is 225MPa and the flexural modulus is 14GPa Much higher than ISO14125's flexural strength greater than 100MPa and flexural modulus greater than 7GPa, and the flexural strength of 225MPa and flexural modulus of Example 1 of 14GPa are higher than the flexural strength of 150MPa and flexural modulus of Comparative Example 1. Number 8GPa. Therefore, it is sufficient to confirm that the average length of the plurality of fiber filaments is greater than or equal to 35 mm, the plurality of the fiber filaments, the plurality of fibers, and the plurality of piles are entangled with each other to form a non-directional distribution, which can make the fiber web The flexural strength and flexural modulus of the structure 32 are increased.

Example 2 differs from Comparative Example 1 in that the total fiber content in Example 2 is reduced to 10% by weight and the average length of the plurality of fiber filaments is 35 mm. However, the flexural strength of Example 2 is 188 MPa and the flexural modulus. 9GPa is higher than the flexural strength of 150 MPa and the flexural modulus of 8 GPa in Comparative Example 1. Therefore, it is sufficient to confirm that the fiber web structure 32 uses an average length greater than or equal to 35 mm. A plurality of the fiber filaments can reduce the total fiber content to 10% wt, and can save costs.

Successively, based on Example 2, under the condition that the total fiber content is maintained at 10% by weight, Example 2 uses a plurality of the fiber filaments with an average length of 35 mm, and Example 3 uses an average length of 100 mm. For the plurality of fiber filaments, Example 4 uses a plurality of the fiber filaments with an average length of 250 mm, and Example 5 uses a plurality of the fiber filaments with an average length of 500 mm. Obviously, with the increase of the average length of the plurality of fiber filaments used, the phenomenon that the plurality of fiber filaments, the plurality of fibers, and the plurality of piles are intertwined with each other to form a non-directional distribution becomes more significant. Therefore, the flexural strength and flexural modulus of the fiber web structure 32 are enhanced. Therefore, the flexural strength of Example 3 is 195 MPa and the flexural modulus is 10 GPa. The flexural strength of Example 4 is 210 MPa and the flexural modulus is 12 GPa. The flexural strength of Example 5 is 235 MPa. And the flexural modulus is 15GPa, which is higher than the standard specified by ISO14125, and also higher than the flexural strength and flexural modulus of Comparative Example 1, Example 1 and Example 2.

Since the phenomenon that the plurality of the fiber filaments, the plurality of the fibers, and the plurality of the piles are entangled with each other in a non-directional distribution is very significant in Example 5, only a total fiber content of 10 wt% can be used to make the resistance The flexural modulus (15 GPa in Example 5) is higher than that of Example 1 (14 GPa) and Comparative Example 1 (8 GPa) using a total fiber content of 30 wt%. The bending strength also has similar results, and will not be repeated here. . Therefore, it is enough to prove that the new type has the technical characteristics of increasing the average length of the plurality of fiber filaments and the phenomenon that the heights of each other are entangled with each other to form a non-directional distribution, so that the required total fiber content can be reduced and the bending strength and The flexural modulus achieves the effect of reducing manufacturing costs.

Example 6 differs from Comparative Example 1 in that the total fiber content in Example 6 is reduced to 10% by weight, the average length of the plurality of fiber filaments is 35 mm, and the weight of the fiber web structure 32 is reduced to 1150 g / m ² and The thickness was reduced from 2.0 mm to 0.9 mm in Comparative Example 1, however, the flexural strength of 171 MPa in Example 6 was higher than the flexural strength of 150 MPa in Comparative Example 1. Therefore, it is sufficient to confirm that the fiber web structure 32 uses a plurality of the fiber filaments with an average length of 35 mm or more, and can reduce the total fiber content to 10%, and can reduce the weight of the fiber web structure 32 and the fiber web structure. 32 thickness, in addition to saving costs, can be widely used in thin products.

Example 7 differs from Comparative Example 1 in that the total fiber content in Example 7 is reduced to 5 wt%, the average length of the plurality of fiber filaments is 35 mm, and the weight of the fiber web structure 32 is reduced to 1150 g / m ² and The thickness was reduced from 2.0 mm to 0.9 mm in Comparative Example 1, however, the flexural strength of 160 MPa in Example 7 was higher than the flexural strength of 150 MPa in Comparative Example 1. Therefore, it is enough to confirm that the fiber web structure 32 uses a plurality of the fiber filaments with an average length of 35 mm or more, and can reduce the total fiber content to 5%, and can reduce the weight of the fiber web structure 32 and the fiber web structure. 32 thickness, in addition to saving costs, can be widely used in thin products.

Based on the above, it can be seen that the breakthrough of the previous technology has indeed achieved the desired effect, and it is not easy for those skilled in the art to think about it. Furthermore, this creative application has not been disclosed before, and its features Progressive and practical, showing that it has met the requirements for patent application, and submitted a patent application in accordance with the law. We kindly ask your office to approve this application for a patent for creation, to encourage creativity, and to have a sense of virtue.

The above-mentioned embodiments are only for explaining the technical ideas and characteristics of this creation. The purpose is to enable those who are familiar with this technique to understand the content of this creation and implement it accordingly. When the scope of the patent of this creation cannot be limited, That is, all equal changes or modifications made in accordance with the spirit revealed in this creation should still be covered by the patent of this creation.

Claims (13)

A composite material multilayer structure comprising:
A core layer (10), which is a foam or honeycomb structure;
Two first adhesive layers (20), one surface of each of the first adhesive layers (20) is respectively connected to the upper surface and the lower surface of the core layer (10);
Two fibrous material layers (30), one side of each of the fibrous material layers (30) is respectively connected to the opposite side of each of the first adhesive layer (20) and the core layer (10), wherein the fibrous material layer (30) comprises an adhesive resin structure (31) and a fiber network structure (32), the fiber network structure (32) is covered by the adhesive resin structure (31), and the fiber network structure (32) is composed of A plurality of discontinuous fiber filaments are distributed in a non-directional manner and are intertwined with each other. The distance between each fiber filament is filled with the adhesive resin structure (31), and the average length of the plurality of fiber filaments is greater than or equal to 35mm;
Two second glue layers (40), one side of each of the second glue layers (40) is respectively connected to the opposite side of each of the fiber material layers (30) and the first glue layer (20); and Metal material layers (50), one side of each of the metal material layers (50) is connected to the opposite side of each of the second adhesive layer (40) and the fiber material layer (30), respectively. The composite material multilayer structure according to claim 1, wherein the thickness of the core layer (10) is 15 mm, the thickness of the fiber material layer (30) is 1 mm to 5 mm, and the thickness of the metal material layer (50) is 1 mm to 5mm. The composite material multilayer structure according to claim 2, wherein the thickness of the core layer (10) is 15 mm, the thickness of the fiber material layer (30) is 1 mm, and the thickness of the metal material layer (50) is 1 mm. The composite multilayer structure according to claim 1, wherein the average length of the plurality of fiber filaments is greater than or equal to 100 mm and less than 500 mm. The composite multilayer structure according to claim 1, wherein the average length of the plurality of fiber filaments is greater than 100 mm and less than or equal to 500 mm. The composite material multi-layer structure according to claim 1, wherein each of the fiber filaments includes a plurality of fibers, and the adhesive resin structure (31) covers the distance between the plurality of fibers to cover the fibers. The composite multilayer structure according to claim 6, wherein at least one of the plurality of fibers forms two independent piles. The composite multilayer structure according to claim 7, wherein the piles are non-directionally distributed. The composite multilayer structure according to claim 6, wherein at least one of the fiber strands of the fibrous web structure (32) and at least one of the fiber strands of the other fiber strands are mutually Wound into a non-directional distribution. The composite multilayer structure according to claim 7, wherein at least one of the fiber strands of the fibrous web structure (32), the fleece system, and at least one of the fibers of the other fiber strands are mutually Wound into a non-directional distribution. The composite multilayer structure according to claim 7, wherein at least one of the fiber strands of at least one of the fiber strands of the fibrous web structure (32) and at least one of the fiber strands of the other fiber strands mutually Wound into a non-directional distribution. The composite multilayer structure according to claim 1, wherein the diameter of the fiber filament is between 3 μm and 30 μm. The composite material multilayer structure according to claim 1, wherein the total fiber content in the fiber material layer (30) accounts for 5% to 30% by weight of the fiber material layer (30).