Manufacturing method of multi-layer woven glass fiber material

Abstract

The invention provides a manufacturing method of a multi-layer woven glass fiber material, which enables the laminated multi-layer glass fiber material to have high bending strength and meet the requirements of products on performance. A single-layer woven glass fiber material is cut to obtain a plurality of N single-layer materials with the same shape, N is a natural number larger than or equal to 4, then the N layers of materials are arranged in a stacked mode from bottom to top, the deflection angle between every two layers of materials is 90 degrees / (N-1), and then the stacked composite material is heated, hot-pressed and formed through a mold to obtain the multi-layer woven glass fiber material.

Description

Technical Field

[0001] The present invention relates to the technical field of braided fiber composites, and specifically to a manufacturing method of a multi-layer braided glass fiber material. Background Art

[0002] When the existing texture-like glass fiber materials are manufactured, according to the preset thickness of the composite material, single-layer glass fibers are stacked at 90° and then pressed. In actual use, the bending strength after stacking and pressing cannot be relatively greatly improved on the basis of the single-layer glass fiber material. Therefore, when a product with a relatively large bending strength is required, more expensive composite materials are often needed for replacement, which will increase the manufacturing cost. In view of this, it is urgent to develop a composite material with high bending strength on the basis of glass fiber materials. Summary of the Invention

[0003] In view of the above problems, the present invention provides a manufacturing method of a multi-layer braided glass fiber material, which enables the multi-layer glass fiber material after stacking and pressing to have high bending strength and meet the performance requirements of products.

[0004] A manufacturing method of a multi-layer braided glass fiber material, characterized in that: several single-layer materials with the same shape are obtained by cutting a single-layer braided glass fiber material, and the number of single-layer materials is N, where N is a natural number greater than or equal to 4. Then, the N layers of materials are stacked from bottom to top, and the deflection angle between each layer of materials is 90° / (N - 1). Then, the stacked composite material is heated and hot-pressed through a mold to obtain a multi-layer braided glass fiber material.

[0005] It is further characterized in that:

[0006] The single-layer material is a rectangular material, and when the materials are stacked, the deflection is carried out with the rectangular center of the material;

[0007] Preferably, the single-layer material is a square material, and when the materials are stacked, the deflection is carried out with the square center of the material. The deflection direction of each group of upper-layer materials relative to the lower-layer materials is the same, both clockwise or counterclockwise deflection, which ensures that after all the single-layer materials are deflected, the top-layer material and the bottom-layer material are deflected by 90°;

[0008] The multi-layer braided glass fiber material obtained by heating and hot-pressing through a mold is cut to obtain N layers of stacked finished braided glass fiber materials for standby;

[0009] When N = 4, the deflection angle between each layer of materials is 30°;

[0010] When N = 5, the deflection angle between each layer of materials is 22.5°;

[0011] When N = 6, the deflection angle between each layer of materials is 18°;

[0012] When N = 7, the deflection angle between each layer of material is 15°.

[0013] A multi-layer woven fiberglass material, characterized in that: it is obtained by laminating N layers of single-layer woven fiberglass materials with the same shape, the same material, and the same thickness. When laminating, the upper single-layer woven fiberglass material is deflected 90° / (N - 1) with respect to the adjacent lower single-layer woven fiberglass material around its plane geometric center, and the finally laminated N layers of materials are formed into a shape by heating and hot pressing with a mold.

[0014] It is further characterized in that:

[0015] Each layer of single-layer woven fiberglass material is a square-shaped structure;

[0016] The multi-layer woven fiberglass material obtained by heating and hot pressing with a mold is cut to obtain N layers of stacked finished woven fiberglass materials for standby.

[0017] After adopting the present invention, each layer of single-layer woven fiberglass material in the N-layer woven fiberglass material is deflected 90° / (N - 1) with respect to the lower single-layer woven fiberglass material, and the finally laminated N layers of materials are formed into a shape by heating and hot pressing with a mold to obtain a multi-layer woven fiberglass material with N layers of laminated materials in the central area, which has high bending strength and meets the performance requirements of the product. Brief Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the single-sided woven fiberglass material adopted by the present invention;

[0019] Figure 2 It is a schematic diagram of the deflection lamination of the specific embodiment of the present invention;

[0020] Figure 3 It is a test data diagram of a comparative product with 5 layers of 90°-direction deflection weaving;

[0021] Figure 4 It is a test data diagram of a specific embodiment with 5 layers of 22.5°-direction deflection weaving;

[0022] The names corresponding to the serial numbers in the figure are as follows:

[0023] Single-layer woven fiberglass material 10. Detailed Description of the Invention

[0024] A manufacturing method of a multi-layer woven fiberglass material: cut a single-layer woven fiberglass material to obtain several N pieces of single-layer materials with the same shape, where N is a natural number greater than or equal to 4. Then stack the N layers of materials from bottom to top, and the deflection angle between each layer of materials is 90° / (N - 1). Then heat and hot press the laminated composite material with a mold to obtain a multi-layer woven fiberglass material.

[0025] In specific implementation, the single-layer material is a square-shaped material. When the materials are stacked, they are deflected around the center of the square of the material. The deflection direction of each upper-layer material relative to the lower-layer material is the same, either clockwise or counterclockwise deflection, ensuring that after all single-layer materials are deflected, the topmost material and the bottommost material are deflected by 90°.

[0026] The multi-layer woven fiberglass material obtained by hot pressing and forming through a mold is cut to obtain N layers of stacked finished woven fiberglass materials for standby.

[0027] When N = 4, the deflection angle between each layer of materials is 30°.

[0028] When N = 5, the deflection angle between each layer of materials is 22.5°.

[0029] When N = 6, the deflection angle between each layer of materials is 18°.

[0030] When N = 7, the deflection angle between each layer of materials is 15°.

[0031] A multi-layer woven fiberglass material, see Figure 1 and Figure 2 : It is obtained by stacking 5 layers of single-layer woven fiberglass materials 10 with the same shape, the same material, and the same thickness. When stacking, the upper single-layer woven fiberglass material 10 is deflected by 22.5° around its plane geometric center relative to the adjacent lower single-layer woven fiberglass material 10, and the finally stacked 5 layers of materials are hot pressed and formed through a mold.

[0032] Each single-layer woven fiberglass material 10 has a square-shaped structure.

[0033] The multi-layer woven fiberglass material obtained by hot pressing and forming through a mold is cut to obtain 5 layers of stacked finished woven fiberglass materials for standby.

[0034] The specific embodiment is the material obtained by stacking 5 layers of single-layer woven fiberglass materials 10 with a 22.5° deflection for each layer.

[0035] The comparative material is the material obtained by stacking 5 layers of the same single-layer woven fiberglass materials 10 with a 90° deflection for each layer.

[0036] The bending test of the comparative material of the specific embodiment is carried out through the existing universal material testing machine of model XUANXI XL-20A. The test conditions are all temperature 23 ± 1°C, humidity 50 ± 5%, the selected test specimen size is 80mm X 10mm, the diameter of the pressure bar is 6mm, the lower span is 20mm, the test speed is 1mm / min, and the test data of the comparative product woven with a 90° direction deflection are shown in Figure 3, the bending stress value is approximately 240 MPa; the test data of the specific embodiment of the 22.5° directional deflection weaving can be seen in Figure 4 , the bending stress value is approximately 400 MPa; that is, by using the same weaving substrate, the bending stress value of the bending strength can be greatly improved by changing the deflection angle of the weaving substrate.

[0037] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claimed invention.

[0038] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A method for manufacturing a multi-layer woven glass fiber material, characterized in that: A single-layer woven glass fiber material is cut to obtain a number of N single-layer materials of the same shape, where N is a natural number ≥ 4. The N layers of material are then stacked from bottom to top, and the deflection angle between each layer of material is 90° / (N-1). The stacked composite material is then heated and hot-pressed through a mold to obtain a multi-layer woven glass fiber material.

2. The method for manufacturing a multi-layer woven glass fiber material according to claim 1, characterized in that: The single-layer material is a rectangular material. When the material is stacked, it is deflected at the rectangular center of the material.

3. The method for manufacturing a multi-layer woven glass fiber material according to claim 2, characterized in that: The single-layer material is a square-shaped material. When the material is stacked, it is deflected at the center of the square. The deflection direction of each group of upper materials relative to the lower materials is the same, and they are all deflected clockwise or counterclockwise. This ensures that after all single-layer materials are deflected, the uppermost material and the lowermost material are deflected by 90°.

4. The method for manufacturing a multi-layer woven glass fiber material according to claim 3, characterized in that: The multi-layer woven glass fiber material obtained by heating and hot pressing the mold is cut to obtain N layers of superimposed finished woven glass fiber material for standby use.

5. The method for manufacturing a multi-layer woven glass fiber material according to claim 1, characterized in that: When N=4, the deflection angle between each layer of material is 30°.

6. The method for manufacturing a multi-layer woven glass fiber material according to claim 1, characterized in that: When N=5, the deflection angle between each layer of material is 22.5°.

7. The method for manufacturing a multi-layer woven glass fiber material according to claim 6, characterized in that: When N=6, the deflection angle between each layer of material is 18°.

8. The method for manufacturing a multi-layer woven glass fiber material according to claim 1, characterized in that: When N=7, the deflection angle between each layer of material is 15°.

9. A multi-layer woven fiberglass material, characterized in that: It is obtained by stacking N layers of single-layer woven fiberglass materials of the same shape, same material, and same thickness. During stacking, the single-layer woven fiberglass material of the upper layer is deflected 90° / (N-1) by its plane geometric center relative to the adjacent single-layer woven fiberglass material of the lower layer. Finally, the stacked N layers of materials are heated and hot-pressed into shape by a mold.

10. The multi-layer woven glass fiber material according to claim 9, characterized in that: Each single layer of woven fiberglass material is a square shaped structure.

Images