Carbon fiber planar triaxial fabric and weaving method thereof

Abstract

The present invention relates to a carbon fiber plane triaxial fabric and a weaving method thereof, comprising a plurality of regular hexagonal units woven from a carbon fiber yarn bundle group, wherein the regular hexagonal unit is evenly divided into three rhombus units; the carbon fiber yarn bundle group comprises a first yarn bundle, a second yarn bundle at a 60° angle with the first yarn bundle, and a third yarn bundle at a ‑60° angle with the first yarn bundle; in the first rhombus unit, the first yarn bundle is located at an upper layer, the second yarn bundle is located at a middle layer, and the third yarn bundle is located at a lower layer; in the second rhombus unit, the second yarn bundle is located at an upper layer, the third yarn bundle is located at a middle layer, and the first yarn bundle is located at a lower layer; in the third rhombus unit, the third yarn bundle is located at an upper layer, the first yarn bundle is located at a middle layer, and the second yarn bundle is located at a lower layer. The present invention is woven along three axial directions, thereby increasing the tear resistance of the carbon fiber fabric, reducing the curvature of the yarn bundle, reducing the deformation of the carbon fiber fabric, and extending the service life of the carbon fiber fabric.

Description

Technical Field

[0001] The invention relates to the field of carbon fiber fabrics, in particular to a carbon fiber plane triaxial fabric and a weaving method thereof. Background Art

[0002] Due to its excellent performance, carbon fiber fabric is widely used in high-end products in the sports field and the aerospace industry. Traditional carbon fiber flat fabric is formed by two groups of mutually perpendicular yarns in two axial directions interwoven on the same surface. It has strong tear resistance only along the direction of the yarn, and its ability to bear loads in most directions is weak. In addition, the warp and weft yarns woven along the two axes have a large curvature. When the fabric is loaded, it deforms greatly, and the friction between the warp and weft yarns is more frequent, which reduces the service life of the carbon fiber fabric. The patterns of existing carbon fiber fabrics are mostly flat, the products are single, and the three-dimensional effect cannot be achieved, which makes it difficult to meet the requirements of some users for three-dimensional patterns. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a carbon fiber planar triaxial fabric and a weaving method thereof, which is woven along three axes, thereby increasing the tear resistance of the carbon fiber fabric, reducing the curvature of the yarn bundle, reducing the deformation of the carbon fiber fabric, and extending the service life of the carbon fiber fabric.

[0004] The present invention is achieved through the following technical scheme, which provides a carbon fiber plane triaxial fabric, comprising a plurality of regular hexagonal units woven from carbon fiber yarn bundles, wherein the regular hexagonal unit is evenly divided into three rhombus units, and the three rhombus units in each regular hexagonal unit are arranged in the same order;

[0005] The carbon fiber yarn bundle group includes a first yarn bundle, a second yarn bundle at an angle of 60° to the first yarn bundle, and a third yarn bundle at an angle of -60° to the first yarn bundle, and the first yarn bundle, the second yarn bundle and the third yarn bundle have the same width;

[0006] The first yarn bundle, the second yarn bundle and the third yarn bundle overlap each other according to their corresponding included angles to form a three-layer structure, wherein the layer located at the front is the upper layer, the layer located at the back is the lower layer, and the layer located between the upper layer and the lower layer is the middle layer;

[0007] In the first rhombus unit, the first yarn bundle is located at the upper layer, the second yarn bundle is located at the middle layer, and the third yarn bundle is located at the lower layer;

[0008] In the second rhombus unit, the second yarn bundle is located at the upper layer, the third yarn bundle is located at the middle layer, and the first yarn bundle is located at the lower layer;

[0009] In the third rhombus unit, the third yarn bundle is located at the upper layer, the first yarn bundle is located at the middle layer, and the second yarn bundle is located at the lower layer.

[0010] Each regular hexagonal unit of the present invention is woven from a group of carbon fiber yarn bundles, and the six edges of each regular hexagonal unit are connected to six regular hexagonal units distributed along the circumferential direction, and the edges of the regular hexagonal units overlap each other. The regular hexagonal unit is evenly divided into three rhombus units with completely equal shapes and sizes, and the three rhombus units in each regular hexagonal unit are arranged in the same order, that is, the directions and angles of the rhombus units at the same position in each regular hexagonal unit are exactly the same.

[0011] The carbon fiber yarn bundle group includes a first yarn bundle, a second yarn bundle forming an angle of 60° with the first yarn bundle, and a third yarn bundle forming an angle of -60° with the first yarn bundle. The widths of the first yarn bundle, the second yarn bundle and the third yarn bundle are equal. The first yarn bundle, the second yarn bundle and the third yarn bundle are woven together to form a rhombus unit. Every three rhombus units constitute a regular hexagonal unit. The thickness of each regular hexagonal unit is the superimposed thickness of the first yarn bundle, the second yarn bundle and the third yarn bundle after weaving.

[0012] In the first rhombus unit, the first yarn bundle is pressed on the second yarn bundle, and the first yarn bundle presses two parallel and adjacent second yarn bundles, and the two second yarn bundles each occupy half of the rhombus unit, and the second yarn bundle is pressed on the third yarn bundle;

[0013] In the second rhombus unit, the second yarn bundle is pressed on the third yarn bundle, and the second yarn bundle presses two parallel and adjacent third yarn bundles, and the two third yarn bundles each occupy half of the rhombus unit, and the third yarn bundle is pressed on the first yarn bundle;

[0014] In the third rhombus unit, the third yarn bundle is pressed on the first yarn bundle, and the third yarn bundle presses two parallel and adjacent first yarn bundles, and the two first yarn bundles each occupy half of the rhombus unit, and the first yarn bundle is pressed on the second yarn bundle.

[0015] That is, the first yarn bundle passes from above the second yarn bundle and the third yarn bundle to between the second yarn bundle and the third yarn bundle, then passes under the second yarn bundle and the third yarn bundle, then passes between the second yarn bundle and the third yarn bundle, and then passes out to above the second yarn bundle and the third yarn bundle, and the weaving is circulated in sequence;

[0016] The second yarn bundle passes from above the first yarn bundle and the third yarn bundle to between the first yarn bundle and the third yarn bundle, then passes under the first yarn bundle and the third yarn bundle, then passes between the first yarn bundle and the third yarn bundle, and then passes out to above the first yarn bundle and the third yarn bundle, and the weaving is circulated in sequence;

[0017] The third yarn bundle passes from above the first yarn bundle and the second yarn bundle into between the first yarn bundle and the second yarn bundle, then passes under the first yarn bundle and the second yarn bundle, then passes between the first yarn bundle and the second yarn bundle, and then passes out to above the first yarn bundle and the second yarn bundle, and the weaving is circulated in sequence;

[0018] The first yarn bundle, the second yarn bundle and the third yarn bundle are woven in a cyclic order of upper, middle, lower, middle and upper, respectively, so as to weave a carbon fiber fabric with a three-dimensional effect.

[0019] Preferably, the first yarn bundle, the second yarn bundle and the third yarn bundle are all 3k-24k, and 1k is 1000 carbon fiber monofilaments. In the field of carbon fiber utilization, k is usually used to represent the number of carbon fiber monofilaments, 1k is 1000 carbon fiber monofilaments, and the commonly used carbon fiber specifications are 1k, 3k, 6k, 12k, 24k, and 48k. The first yarn bundle, the second yarn bundle and the third yarn bundle are all flat belts composed of carbon fibers between 3k and 24k, and the specifications of the carbon fibers can be selected according to actual needs.

[0020] Preferably, the three diamond units in each regular hexagonal unit are arranged in clockwise order. The regular hexagonal unit of this solution is arranged in clockwise order only when it is along the main view direction, that is, the first yarn bundle, the second yarn bundle and the third yarn bundle in the diamond unit are arranged in clockwise order; when the regular hexagonal unit is along the rear view direction, the three diamond units in each regular hexagonal unit are arranged in counterclockwise order, that is, the first yarn bundle, the second yarn bundle and the third yarn bundle in the diamond unit are arranged in counterclockwise order, so that the direction of the woven three-dimensional pattern is more in line with the aesthetic taste of the public, making users feel more comfortable.

[0021] A method for weaving a carbon fiber planar triaxial fabric comprises the following steps:

[0022] Step 1: Place a plurality of first yarn bundles that are parallel to each other and closely arranged on a plane; Press a plurality of second yarn bundles that are parallel to each other and closely arranged and that form an angle of 60° with the first yarn bundle on the first yarn bundle; Press a plurality of third yarn bundles that are parallel to each other and closely arranged and that form an angle of -60° with the first yarn bundle on the second yarn bundle;

[0023] Step 2: Fix one end of the third yarn bundle located on the uppermost layer to the second yarn bundle and the first yarn bundle to prevent the angles among the first yarn bundle, the second yarn bundle and the third yarn bundle from changing;

[0024] Step 3: Starting from the first third yarn bundle, pass the third yarn bundle from above the first yarn bundle and the second yarn bundle into between the first yarn bundle and the second yarn bundle, then pass it under the first yarn bundle and the second yarn bundle, then pass it between the first yarn bundle and the second yarn bundle, and then pass it out to above the first yarn bundle and the second yarn bundle;

[0025] Step 4: Repeat step 3 in sequence according to the arrangement order of the third yarn bundles, so that each third yarn bundle is woven in the cyclic order of upper, middle, lower, middle, and upper in step 3, thereby weaving a carbon fiber fabric with a three-dimensional effect.

[0026] The beneficial effects of the present invention are as follows: the present invention is woven along three axes. Compared with the carbon fiber fabric woven along two axes, the carbon fiber fabric woven along two axes has a stronger tear resistance only on two axes, while the triaxial fabric of the present invention is a fabric formed by three groups of yarns interwoven at an angle of 60 degrees in the same plane, so it has good fabric structure stability and mechanical properties with the same force in all directions, so that the force acting on the fabric is dispersed on three axes, greatly enhancing the load-bearing capacity of the carbon fiber fabric, increasing the performance indicators such as the bursting strength, tearing strength and breaking strength of the carbon fiber fabric, and having uniform force in any direction, and having better resistance to oblique stretching, flexibility and fatigue resistance. In addition, the carbon fiber yarn bundles of the present invention are all woven and superimposed on each other along a straight line, which maintains the straightness of the yarn bundle to the greatest extent, avoids the weaving technique of the yarn bundle tortuosity, reduces the curvature of the yarn bundle, thereby reducing the deformation of the yarn bundle from the bent state to the straight state, and reduces the deformation of the carbon fiber fabric, thereby reducing the mutual friction of the carbon fiber fabric during deformation, reducing the wear of the carbon fiber fabric, and extending the service life of the carbon fiber fabric. At the same time, the carbon fiber fabric of the present invention is woven in three axial directions, so that the carbon fiber plane fabric of the present invention presents a three-dimensional effect, further expanding the selection range of carbon fiber fabrics for users. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is the actual effect diagram of the present invention;

[0029] As shown in the figure:

[0030] 1. The first yarn bundle, 2. The second yarn bundle, 3. The third yarn bundle. DETAILED DESCRIPTION

[0031] In order to clearly illustrate the technical features of this solution, this solution is described below through a specific implementation method.

[0032] A carbon fiber plane triaxial fabric, as shown in the figure, comprises a plurality of regular hexagonal units woven from carbon fiber yarn bundles, wherein the regular hexagonal unit is evenly divided into three rhombus units, and the three rhombus units in each regular hexagonal unit are arranged in the same order;

[0033] The carbon fiber yarn bundle group includes a first yarn bundle 1, a second yarn bundle 2 which is 60° at an angle to the first yarn bundle 1, and a third yarn bundle 3 which is -60° at an angle to the first yarn bundle 1, and the widths of the first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 are equal;

[0034] The first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 overlap each other at their corresponding angles to form a three-layer structure, wherein the layer at the front is the upper layer, the layer at the back is the lower layer, and the layer between the upper layer and the lower layer is the middle layer;

[0035] In the first rhombus unit, the first yarn bundle 1 is located at the upper layer, the second yarn bundle 2 is located at the middle layer, and the third yarn bundle 3 is located at the lower layer;

[0036] In the second diamond-shaped unit, the second yarn bundle 2 is located at the upper layer, the third yarn bundle 3 is located at the middle layer, and the first yarn bundle 1 is located at the lower layer;

[0037] In the third rhombus unit, the third yarn bundle 3 is located in the upper layer, the first yarn bundle 1 is located in the middle layer, and the second yarn bundle 2 is located in the lower layer.

[0038] As a preferred solution, the first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 are all 3k-24k, and 1k is 1000 carbon fiber monofilaments. In the field of carbon fiber utilization, k is usually used to represent the number of carbon fiber monofilaments, 1k is 1000 carbon fiber monofilaments, and the commonly used carbon fiber specifications are 1k, 3k, 6k, 12k, 24k, and 48k. The first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 are all flat belts composed of carbon fibers with specifications between 3k and 24k, and the specifications of carbon fibers can be selected according to actual needs.

[0039] As a preferred solution, the three diamond units in each regular hexagonal unit are arranged in clockwise order. In this embodiment, the three diamond units in each regular hexagonal unit are arranged in clockwise order only when the regular hexagonal unit is along the main view direction, that is, the first yarn bundle, the second yarn bundle and the third yarn bundle in the diamond unit are arranged in clockwise order; when the regular hexagonal unit is along the rear view direction, the three diamond units in each regular hexagonal unit are arranged in counterclockwise order, that is, the first yarn bundle, the second yarn bundle and the third yarn bundle in the diamond unit are arranged in counterclockwise order, so that the direction of the woven three-dimensional pattern is more in line with the aesthetic taste of the public, making the user feel more comfortable.

[0040] Each regular hexagonal unit of this embodiment is woven from a carbon fiber yarn bundle, and the six edges of each regular hexagonal unit are connected to six regular hexagonal units distributed along the circumferential direction, and the edges of the regular hexagonal unit overlap each other. The regular hexagonal unit is evenly divided into three rhombus units with completely equal shapes and sizes, and the three rhombus units in each regular hexagonal unit are arranged in the same order, that is, the directions and angles of the rhombus units at the same position in each regular hexagonal unit are exactly the same.

[0041] The carbon fiber yarn bundle group includes a first yarn bundle 1, a second yarn bundle 2 which is at an angle of 60° to the first yarn bundle 1, and a third yarn bundle 3 which is at an angle of -60° to the first yarn bundle 1. The widths of the first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 are equal. The first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 are interlaced and woven to form rhombus units. Every three rhombus units constitute a regular hexagonal unit. The thickness of each regular hexagonal unit is the superimposed thickness of the first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 after weaving.

[0042] In the first rhombus unit, the first yarn bundle 1 is pressed on the second yarn bundle 2, and the first yarn bundle 1 presses two parallel and adjacent second yarn bundles 2, and the two second yarn bundles 2 each occupy half of the rhombus unit, and the second yarn bundle 2 is pressed on the third yarn bundle 3;

[0043] In the second rhombus unit, the second yarn bundle 2 is pressed on the third yarn bundle 3, and the second yarn bundle 2 presses two parallel and adjacent third yarn bundles 3, and the two third yarn bundles 3 each occupy half of the rhombus unit, and the third yarn bundle 3 is pressed on the first yarn bundle 1;

[0044] In the third rhombus unit, the third yarn bundle 3 is pressed on the first yarn bundle 1 , and the third yarn bundle 3 presses two parallel and adjacent first yarn bundles 1 , and the two first yarn bundles 1 each occupy half of the rhombus unit, and the first yarn bundle 1 is pressed on the second yarn bundle 2 .

[0045] That is, the first yarn bundle 1 passes from above the second yarn bundle 2 and the third yarn bundle 3 into between the second yarn bundle 2 and the third yarn bundle 3, then passes under the second yarn bundle 2 and the third yarn bundle 3, then passes between the second yarn bundle 2 and the third yarn bundle 3, then passes out to above the second yarn bundle 2 and the third yarn bundle 3, and the weaving is circulated in sequence;

[0046] The second yarn bundle 2 passes from above the first yarn bundle 1 and the third yarn bundle 3 into between the first yarn bundle 1 and the third yarn bundle 3, then passes under the first yarn bundle 1 and the third yarn bundle 3, then passes between the first yarn bundle 1 and the third yarn bundle 3, then passes out to above the first yarn bundle 1 and the third yarn bundle 3, and the weaving is circulated in sequence;

[0047] The third yarn bundle 3 passes from above the first yarn bundle 1 and the second yarn bundle 2 into between the first yarn bundle 1 and the second yarn bundle 2, then passes under the first yarn bundle 1 and the second yarn bundle 2, then passes between the first yarn bundle 1 and the second yarn bundle 2, and then passes out to above the first yarn bundle 1 and the second yarn bundle 2, and the weaving is circulated in sequence;

[0048] The first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 are woven in a cyclic order of top, middle, bottom, middle and top, respectively, so as to weave a carbon fiber fabric with a three-dimensional effect.

[0049] A method for weaving a carbon fiber planar triaxial fabric comprises the following steps:

[0050] Step 1: Place a plurality of first yarn bundles 1 that are parallel to each other and closely arranged on a plane; press a plurality of second yarn bundles 2 that are parallel to each other and closely arranged at an angle of 60° to the first yarn bundle 1 onto the first yarn bundle 1; press a plurality of third yarn bundles 3 that are parallel to each other and closely arranged at an angle of -60° to the first yarn bundle 1 onto the second yarn bundle 2;

[0051] Step 2: Fix one end of the third yarn bundle 3 located at the top layer on the second yarn bundle 2 and the first yarn bundle 1 to prevent the angles among the first yarn bundle 1, the second yarn bundle 2 and the third yarn bundle 3 from changing;

[0052] Step 3: Starting from the first third yarn bundle 3, the third yarn bundle 3 is passed from above the first yarn bundle 1 and the second yarn bundle 2 into between the first yarn bundle 1 and the second yarn bundle 2, then passed under the first yarn bundle 1 and the second yarn bundle 2, then passed between the first yarn bundle 1 and the second yarn bundle 2, and then passed out to above the first yarn bundle 1 and the second yarn bundle 2;

[0053] Step 4: Repeat step 3 in sequence according to the arrangement order of the third yarn bundles 3, so that each third yarn bundle 3 is woven in the cycle order of upper, middle, lower, middle, and upper in step 3, thereby weaving a carbon fiber fabric with a three-dimensional effect

[0054] The present invention is woven along three axes. Compared with the carbon fiber fabric woven along two axes, the carbon fiber fabric woven along two axes has strong tear resistance only on two axes, while the triaxial fabric of the present invention is a fabric formed by three groups of yarns interwoven at an angle of 60 degrees in the same plane, so it has good fabric structure stability and mechanical properties with the same force in all directions, so that the force acting on the fabric is dispersed on three axes, greatly enhancing the load-bearing capacity of the carbon fiber fabric, increasing the performance indicators such as the bursting strength, tearing strength and breaking strength of the carbon fiber fabric, and having uniform force in any direction, and having better resistance to oblique stretching, flexibility and fatigue resistance. In addition, the carbon fiber yarn bundles of the present invention are all woven and superimposed on each other along a straight line, which maintains the straightness of the yarn bundle to the greatest extent, avoids the weaving technique of the yarn bundle tortuosity, reduces the curvature of the yarn bundle, thereby reducing the deformation of the yarn bundle from the bent state to the straight state, and reduces the deformation of the carbon fiber fabric, thereby reducing the mutual friction of the carbon fiber fabric during deformation, reducing the wear of the carbon fiber fabric, and extending the service life of the carbon fiber fabric. At the same time, the carbon fiber fabric of the present invention is woven in three axial directions, so that the carbon fiber plane fabric of the present invention presents a three-dimensional effect, further expanding the selection range of carbon fiber fabrics for users.

[0055] Of course, the above description is not limited to the above examples. Technical features not described in the present invention can be achieved by or by using existing technologies, which will not be described here. The above embodiments and drawings are only used to illustrate the technical scheme of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention, and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A method for weaving a carbon fiber planar triaxial fabric, characterized in that: The following steps are involved: Step 1: placing a plurality of first yarn bundles (1) that are parallel to each other and closely arranged on a plane; pressing a plurality of second yarn bundles (2) that are parallel to each other and closely arranged and that form an angle of 60° with the first yarn bundle (1) onto the first yarn bundle (1); pressing a plurality of third yarn bundles (3) that are parallel to each other and closely arranged and that form an angle of -60° with the first yarn bundle (1) onto the second yarn bundle (2); Step 2: fixing one end of the third yarn bundle (3) located at the top layer on the second yarn bundle (2) and the first yarn bundle (1) to prevent the included angles of the first yarn bundle (1), the second yarn bundle (2) and the third yarn bundle (3) from changing; Step 3: Starting from the first third yarn bundle (3), the third yarn bundle (3) is passed from above the first yarn bundle (1) and the second yarn bundle (2) to between the first yarn bundle (1) and the second yarn bundle (2), then passed under the first yarn bundle (1) and the second yarn bundle (2), then passed between the first yarn bundle (1) and the second yarn bundle (2), and then passed out to above the first yarn bundle (1) and the second yarn bundle (2); Step 4: Repeat step 3 in sequence according to the arrangement order of the third yarn bundles (3), so that each third yarn bundle (3) is woven in the cyclic order of upper, middle, lower, middle, upper in step 3, thereby weaving a carbon fiber fabric with a three-dimensional effect; The carbon fiber planar triaxial fabric woven by the weaving method comprises a plurality of hexagonal units woven from a group of carbon fiber yarn bundles, wherein the hexagonal unit is divided into three rhombus units, and the three rhombus units in each hexagonal unit are arranged in the same order; The carbon fiber yarn bundle group comprises a first yarn bundle (1), a second yarn bundle (2) forming an angle of 60° with the first yarn bundle (1), and a third yarn bundle (3) forming an angle of -60° with the first yarn bundle (1), wherein the first yarn bundle (1), the second yarn bundle (2) and the third yarn bundle (3) have the same width; In the first rhombus-shaped unit, the first yarn bundle (1) is located in the upper layer, the second yarn bundle (2) is located in the middle layer, and the third yarn bundle (3) is located in the lower layer; In the second rhombus-shaped unit, the second yarn bundle (2) is located in the upper layer, the third yarn bundle (3) is located in the middle layer, and the first yarn bundle (1) is located in the lower layer; In the third rhombus-shaped unit, the third yarn bundle (3) is located in the upper layer, the first yarn bundle (1) is located in the middle layer, and the second yarn bundle (2) is located in the lower layer.

2. The method for weaving a carbon fiber planar triaxial fabric according to claim 1, characterized in that: The first yarn bundle (1), the second yarn bundle (2) and the third yarn bundle (3) are all 3k-24k, and 1k is 1000 carbon fiber monofilaments.

3. The method for weaving a carbon fiber planar triaxial fabric according to claim 1, characterized in that: The three diamond-shaped units within each hexagonal unit are arranged in clockwise order.

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