Carbon fiber axial fabric
Through the three-layer fiber structure design, combined with the carbon fiber layer and the glass fiber frame yarn layer, the problem of insufficient mechanical properties and structural stability of large wind blades on carbon fiber fabrics is solved, and high-performance applications of fabrics are achieved.
Patent Information
- Application Number
- CN202422497369.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-16
- Publication Date
- 2025-08-01
- Estimated Expiration
- 2034-10-16
AI Technical Summary
Existing carbon fiber fabrics are difficult to meet the high-performance needs of large blades on wind blades, especially in terms of mechanical properties and structural stability.
A three-layer fiber structure is adopted, including a carbon fiber layer and two glass fiber skeleton yarn layer arranged oppositely in the opposite direction. The carbon fiber layer is the main structure. The glass fiber yarn layer is arranged as the skeleton yarn layer in the direction of plus or minus 30-60 degrees, and is tied and braided by low-elastic polyester wire to form an integral structure.
It improves the flatness of the fabric and the mechanical properties of the warp direction, enhances structural stability, and improves the unidirectional tensile strength and modulus.
Smart Images
Figure CN223176353U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of textiles and relates to a carbon fiber axial fabric. Background Art
[0002] Carbon fiber composites are increasingly being used in the main beams of blades, which play an advantageous role in reducing the weight of the blades while significantly improving the performance of the blades. As the blade length and power of wind turbines are increasing, the requirements for carbon fiber fabrics are also getting higher and higher. Therefore, it is necessary to design a carbon fiber axial fabric. Summary of the Invention
[0003] The purpose of the utility model is to provide a carbon fiber axial fabric aiming at the above problems existing in the prior art.
[0004] To achieve the above purpose, the technical solution of the utility model is: a carbon fiber axial fabric, characterized in that it includes a carbon fiber layer laid into the main structure in the warp direction, a glass fiber yarn is laid into the first layer on the back of the carbon fiber layer as the first skeleton yarn layer, a glass fiber yarn is laid into the second layer on the back of the carbon fiber layer as the second skeleton yarn layer, and then the above-mentioned carbon fiber layer, the first skeleton yarn layer and the second skeleton yarn layer are bundled and woven by low-elastic polyester filaments to form an integral structure.
[0005] The first skeleton yarn layer is arranged at a positive 30-60 degree direction, and the second skeleton yarn layer is arranged at a negative 30-60 degree direction.
[0006] The carbon fiber layer uses carbon fiber large tows with a unit weight of 500-650 grams per square meter.
[0007] Both the first skeleton yarn layer and the second skeleton yarn layer use glass fiber untwisted fine yarns with a unit weight of 10-15 grams per square meter.
[0008] By adopting the above technical solution, the beneficial effect of the utility model is:
[0009] The utility model adopts a three-layer fiber structure, utilizes the carbon fiber layer as the main structure, and utilizes the first skeleton yarn layer and the second skeleton yarn layer arranged in opposite directions to play a role in stabilizing the structure of the carbon fiber layer, so that the fabric has good flatness and also improves the mechanical properties of the fabric in the warp direction. Brief Description of the Drawings
[0010] Figure 1 It is a structural schematic diagram of the utility model.
[0011] In the figure, 1. carbon fiber layer; 2. first skeleton yarn layer; 3. second skeleton yarn layer. Detailed Description of the Invention
[0012] To further explain the technical solution of the present utility model, the following will elaborate on the present utility model through specific embodiments.
[0013] As Figure 1 shown, this carbon fiber axial fabric includes a carbon fiber layer 1 laid into the main structure in the warp direction, a fiberglass yarn laid into the first layer on the back of the carbon fiber layer 1 as the first skeleton yarn layer 2, a fiberglass yarn laid into the second layer on the back of the carbon fiber layer 1 as the second skeleton yarn layer 3, and then the above-mentioned carbon fiber layer 1, the first skeleton yarn layer 2, and the second skeleton yarn layer 3 are bundled and woven with low-elastic polyester filaments to form an integral structure.
[0014] The first skeleton yarn layer 2 is arranged at a positive 30 - 60 degree direction, and the second skeleton yarn layer 3 is arranged at a negative 30 - 60 degree direction; it plays a role in stabilizing the structure of the carbon fiber layer 1.
[0015] The carbon fiber layer 1 uses carbon fiber large tows, with a unit weight of 500 - 650 grams per square meter.
[0016] Both the first skeleton yarn layer 2 and the second skeleton yarn layer 3 use fiberglass untwisted fine yarns, with a unit weight of 10 - 15 grams per square meter, that is, the unit weights of both the first skeleton yarn layer 2 and the second skeleton yarn layer 3 are within the range of 10 - 15 grams per square meter.
[0017] The present utility model emphasizes the mechanical properties in the warp direction of the fabric. In this embodiment, the carbon fiber layer 1 uses 24k carbon fiber large tows, with a unit weight of 500 - 650 grams per square meter; the weight of this fabric is 580 grams per square meter; after testing, its unidirectional tensile strength can reach 2000 Mpa, and its unidirectional tensile modulus can reach 110 Gpa.
[0018] The above components are all common standard parts or parts known to those skilled in the art, and their structures and principles can all be learned by those skilled in the art through technical manuals or through conventional experimental methods.
[0019] The above embodiments and diagrams do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by those of ordinary skill in the art shall be regarded as not departing from the patent scope of the present utility model.
Claims
1. A carbon fiber axial fabric, characterized in that, It includes a carbon fiber layer (1) laid into the main structure in the warp direction, a fiberglass yarn is laid into the first layer on the back of the carbon fiber layer (1) as the first skeleton yarn layer (2), a fiberglass yarn is laid into the second layer on the back of the carbon fiber layer (1) as the second skeleton yarn layer (3), and then the above-mentioned carbon fiber layer (1), the first skeleton yarn layer (2) and the second skeleton yarn layer (3) are bundled and woven by low-elastic polyester filaments to form an integral structure.
2. The carbon fiber axial fabric according to claim 1, characterized in that, The first skeleton yarn layer (2) is arranged in the positive 30-60 degree direction, and the second skeleton yarn layer (3) is arranged in the negative 30-60 degree direction.
3. The carbon fiber axial fabric according to claim 1, characterized in that, The carbon fiber layer (1) uses a large carbon fiber tow, with a unit weight of 500-650 grams per square meter.
4. A carbon fiber axial fabric according to claim 3, characterized in that, Both the first skeleton yarn layer (2) and the second skeleton yarn layer (3) use untwisted fine fiberglass yarns, with a unit weight of 10-15 grams per square meter.