A glass fiber biaxial fabric

Abstract

The utility model discloses a kind of glass fiber biaxial fabrics, including the main fiber layer one formed by parallelly laying glass fiber in the fabric front, the reinforcing layer one and the reinforcing layer two for strengthening structure in the middle two layers, the main fiber layer two formed by parallelly laying glass fiber in the fabric back;Four layers of warp low-elasticity polyester filament warp knitting into a structure whole by sewing and binding, and color polyester thread sewing is formed at the two end edge positions of fabric Identification line.

Description

Technical Field

[0001] This utility model belongs to the field of industrial textiles and relates to a glass fiber biaxial fabric. Background Technology

[0002] Biaxial (±45°) fabric is a key material in wind turbine blade manufacturing, primarily used to withstand shear and torsional loads. Currently, blades are trending towards greater length and lighter weight, especially offshore wind turbine blades, which place extremely high demands on the specific strength and specific modulus of the materials. Traditional biaxial fabrics have similar yarn specifications and densities, which are relatively high, hindering the precise design of lightweight blades. Therefore, designing a glass fiber biaxial fabric to address these issues is particularly necessary. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a glass fiber biaxial fabric.

[0004] To achieve the above objectives, the technical solution of this utility model is: a glass fiber biaxial fabric, comprising a main fiber layer 1 formed by parallel laying of glass fibers on the front side of the fabric, two middle layers for reinforcing the structure, a reinforcing layer 1 and a reinforcing layer 2, and a main fiber layer 2 formed by parallel laying of glass fibers on the back side of the fabric; the four layers are bound together by looping and sewing of low-elastic polyester yarn to form a structural whole, and colored polyester thread is sewn to form identification lines at both ends of the fabric edge.

[0005] The yarn specifications for both the first and second main fiber layers are glass fiber untwisted rovings, with 300TEX and 600TEX glass fiber yarns laid in parallel with alternating intervals, a laying density of 10-13 yarns / inch, and a single layer unit weight of 260-340 grams per square meter.

[0006] The first main fiber layer is laid at a positive angle of 45 degrees, and the second main fiber layer is laid at a negative angle of 45 degrees.

[0007] Both the first and second reinforcing layers are made of 68TEX glass fiber yarn, which is laid in parallel with each yarn evenly spaced, with a spacing of 3-4 cm between the yarns. The weight of a single layer is 1.8-2.2 grams per square meter.

[0008] The first reinforcing layer is laid at a 0-degree angle, and the second reinforcing layer is laid at a 90-degree angle.

[0009] The binding thread density is 2-3 threads / cm.

[0010] The colored polyester thread is a colored low-elastic polyester thread, and it is made using a longitudinal stitching method.

[0011] The glass fiber roving is an epoxy yarn, and it is made of one of the following: ordinary glass fiber, high modulus glass fiber, or ultra-high modulus glass fiber.

[0012] By adopting the above technical solution, the beneficial effects of this utility model are: 1. By using a four-layer structure consisting of main fiber layer one, reinforcement layer one, reinforcement layer two, and main fiber layer two, and laying out yarns of different densities, the overall weight of the fabric is reduced while improving the structural uniformity, permeability, and mechanical properties. The low-density fabric design is the foundation for achieving lightweighting.

[0013] 2. Sewing positioning marking lines helps to accurately position the fabric during the later layering process, effectively improving production efficiency and product consistency. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; In the figure, 1 is the first main fiber layer; 2 is the first reinforcing layer; 3 is the second reinforcing layer; and 4 is the second main fiber layer. Detailed Implementation

[0015] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0016] like Figure 1 As shown, this glass fiber biaxial fabric includes a main fiber layer 1 formed by parallel laying of glass fibers on the front side of the fabric, two middle reinforcing layers 2 and 3 for strengthening the structure, and a main fiber layer 4 formed by parallel laying of glass fibers on the back side of the fabric. The four layers are bound together by looping and sewing of low-elastic polyester yarns to form a single structural unit, which is a technique used in the prior art to make it a single structural unit. The binding thread density is 2-3 threads / cm. Colored polyester thread is sewn into the edges of both ends of the fabric to form identification lines.

[0017] The yarn specifications for both main fiber layer 1 and main fiber layer 2 are glass fiber untwisted rovings, with 300TEX and 600TEX glass fiber yarns laid in parallel with alternating intervals, and a laying density of 10-13 yarns / inch. The unit weight of a single layer is 260-340 grams per square meter. The laying angle of fiber layer 1 is 45 degrees in the positive direction, and the laying angle of main fiber layer 2 is 45 degrees in the negative direction.

[0018] Both reinforcing layer 1 (2) and reinforcing layer 2 (3) are made of 68TEX glass fiber yarn, which are laid in parallel with each yarn evenly spaced, with a spacing of 3-4 cm between the yarns. The weight of a single layer is 1.8-2.2 grams per square meter. The laying angle of reinforcing layer 1 (2) is 0 degrees, and the laying angle of reinforcing layer 2 (3) is 90 degrees.

[0019] The colored polyester thread is a colored low-elastic polyester thread, which is made using a longitudinal stitching method; longitudinal stitching is performed at designated positions on the edge of the fabric to provide a precise visual reference for automated or manual lay-up.

[0020] Untwisted glass fiber roving is an epoxy-based yarn, made from one of the following: ordinary glass fiber, high-modulus glass fiber, or ultra-high-modulus glass fiber.

[0021] By employing a four-layer structure consisting of main fiber layer 1, reinforcement layer 2, reinforcement layer 3, and main fiber layer 4, and using yarns of different densities for laying, the overall weight of the fabric is reduced while improving the structural uniformity, permeability, and mechanical properties. The low-density fabric design is the foundation for achieving lightweighting.

[0022] Sewing on marking lines helps ensure accurate positioning of the fabric during later layering processes, effectively improving production efficiency and product consistency.

[0023] All of the above components are general standard parts or components known to those skilled in the art. Their structure and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods.

[0024] The above embodiments and figures are not intended to limit the product form and style of this utility model. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of this utility model.

Claims

1. A glass fiber biaxial fabric, characterized in that, The fabric includes a main fiber layer (1) formed by laying glass fibers in parallel on the front side of the fabric, two middle layers (2) and (3) for reinforcing the structure, and a main fiber layer (4) formed by laying glass fibers in parallel on the back side of the fabric. The four layers are bound together by weaving and sewing together with low-elastic polyester yarns to form a structural whole. Colored polyester yarns are sewn and sewn together at the two ends of the fabric to form identification lines.

2. The glass fiber biaxial fabric according to claim 1, characterized in that, The yarn specifications for laying the main fiber layer one (1) and the main fiber layer two (4) are both glass fiber untwisted rovings, with 300TEX glass fiber yarn and 600TEX glass fiber yarn laid in parallel with alternating intervals, the laying density is 10-13 yarns / inch, and the unit weight of a single layer is 260-340 grams per square meter.

3. The glass fiber biaxial fabric according to claim 2, characterized in that, The laying angle of the first main fiber layer (1) is 45 degrees in the positive direction, and the laying angle of the second main fiber layer (4) is 45 degrees in the negative direction.

4. The glass fiber biaxial fabric according to claim 1, characterized in that, The first reinforcing layer (2) and the second reinforcing layer (3) are both 68TEX glass fiber yarns, which are laid in parallel with each yarn evenly spaced, with a spacing of 3-4 cm between the yarns, and a single layer weight of 1.8-2.2 grams per square meter.

5. The glass fiber biaxial fabric according to claim 4, characterized in that, The reinforcing layer one (2) is laid at a 0-degree angle, and the reinforcing layer two (3) is laid at a 90-degree angle.

6. The glass fiber biaxial fabric according to claim 1, characterized in that, The binding thread density is 2-3 threads / cm.

7. The glass fiber biaxial fabric according to claim 1, characterized in that, The colored polyester thread is a colored low-elastic polyester thread, and it is made using a longitudinal stitching method.

8. A glass fiber biaxial fabric according to claim 2, characterized in that, The glass fiber roving is an epoxy yarn, and it is made of one of the following: ordinary glass fiber, high modulus glass fiber, or ultra-high modulus glass fiber.

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