CN114248463A - Fiber fabric, jig thereof and manufacturing method thereof - Google Patents

Fiber fabric, jig thereof and manufacturing method thereof Download PDF

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Publication number
CN114248463A
CN114248463A CN202010997527.1A CN202010997527A CN114248463A CN 114248463 A CN114248463 A CN 114248463A CN 202010997527 A CN202010997527 A CN 202010997527A CN 114248463 A CN114248463 A CN 114248463A
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CN
China
Prior art keywords
fiber
axial
grooves
fabric
fiber fabric
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010997527.1A
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Chinese (zh)
Inventor
李小明
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Goldwind Science and Technology Co Ltd
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Jiangsu Goldwind Science and Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Goldwind Science and Technology Co Ltd filed Critical Jiangsu Goldwind Science and Technology Co Ltd
Priority to CN202010997527.1A priority Critical patent/CN114248463A/en
Publication of CN114248463A publication Critical patent/CN114248463A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/202—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres arranged in parallel planes or structures of fibres crossing at substantial angles, e.g. cross-moulding compound [XMC]
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/205—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
    • B29C70/541—Positioning reinforcements in a mould, e.g. using clamping means for the reinforcement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/08—Blades for rotors, stators, fans, turbines or the like, e.g. screw propellers
    • B29L2031/082—Blades, e.g. for helicopters
    • B29L2031/085—Wind turbine blades

Abstract

The present disclosure provides a fiber fabric, a jig thereof and a manufacturing method thereof, wherein the fiber fabric comprises a fiber layer, and the fiber layer comprises: and a plurality of axial fiber bundles arranged at intervals in a width direction of the fiber fabric, the plurality of axial fiber bundles having an axial orientation in an arc shape. According to this disclosed embodiment's fabric, including being the curved tow at least in length direction, when being used for the curved surface structure spare, can match with the shape of curved surface structure spare to the laminating is higher, and product structure performance is better.

Description

Fiber fabric, jig thereof and manufacturing method thereof
Technical Field
The present disclosure relates to the field of material technology, and in particular, to a fiber fabric, a jig for the fiber fabric, and a method for manufacturing the fiber fabric.
Background
The reinforcing materials such as glass fiber and carbon fiber are commonly used for structural composite material products to provide mechanical strength and rigidity required by structural members, when the reinforcing materials are usually used as structural member fabrics, the materials are woven at the angles in the directions such as unidirectional direction, biaxial direction, triaxial direction, tetraaxial direction and the like, and are called as preset-direction fabrics, and the common point is that the fibers are linear, so that the fabric direction is consistent with the bearing force direction, and the optimal effect is achieved. As shown in fig. 1, the conventional uniaxial fabric may include a plurality of yarn bundles 1 arranged parallel to each other, each yarn bundle 1 linearly extending in a 0 degree direction, and the plurality of yarn bundles 1 may be bound and fixed by a binding yarn 2. However, for large irregular composite structures, the linear fiber fabric does not match the shape of the target product, making the lay-up operation difficult.
Disclosure of Invention
It is an object of the present disclosure to provide a fabric having a curvature that matches the shape of the target article.
According to an aspect of the present disclosure, there is provided a fiber fabric including a fiber layer including: and a plurality of axial fiber bundles arranged at intervals in a width direction of the fiber fabric, the plurality of axial fiber bundles having an axial orientation in an arc shape.
Alternatively, the arc of axial orientation of the plurality of axial fiber bundles may be different.
Alternatively, the axial fiber bundles may be curved in the height direction of the fiber fabric.
Alternatively, the width direction of the fiber fabric may have a curvature.
Alternatively, the fibre fabric may comprise a plurality of fibre layers on top of each other.
Alternatively, the axial orientation of the axial fiber bundles in adjacent two of the plurality of fiber layers may be different.
Optionally, the fiber layer may further include a binding wire binding a plurality of axial fiber bundles together.
Another aspect of the present disclosure provides a curved surface structural member, the curved surface structural member uses as above the fiber fabric as a skeleton, the fiber fabric has a radian matched with the curved surface structural member.
Alternatively, the curved structure may be a blade of a wind turbine.
Another aspect of the present disclosure provides a jig for a fiber fabric, which may include: a main body; and a guide mechanism, the guide mechanism comprising: a plurality of grooves formed on the body to be spaced apart from each other, each of the plurality of grooves being arc-shaped in a length direction to form an arc-shaped groove.
Alternatively, the curvature of the plurality of grooves in the length direction may be different.
Alternatively, the grooves may differ in groove depth in the length direction.
Optionally, the plurality of grooves have different groove depths on the same cross section perpendicular to the length direction of the grooves, so that the plurality of grooves are arranged in an arc shape.
Optionally, the jig may include a plurality of guide mechanisms, and the length directions of the grooves in the plurality of guide mechanisms may be different.
Optionally, the jig may further include: and binding holes or binding grooves arranged in a direction perpendicular to a length direction of the groove.
Another aspect of the present disclosure provides a method for manufacturing a fiber fabric, in which the jig is used to manufacture the fiber fabric, the method including: respectively placing a plurality of axial fiber bundles in a plurality of grooves of a guide mechanism, and applying tension to make the axial fiber bundles attach to the grooves in an arc shape; the plurality of axial fiber bundles are bound together by binding wires to form a fiber layer.
According to this disclosed embodiment's fabric, including being the curved tow at least in length direction, when being used for the curved surface structure spare, can match with the shape of curved surface structure spare to the laminating is higher, and product structure performance is better.
Drawings
The above and/or other objects and advantages of the present disclosure will become more apparent from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic representation of a conventional fiber fabric.
Fig. 2 is a top view of a fiber layer of a fiber fabric according to an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic view of a jig for manufacturing a fiber fabric according to an exemplary embodiment of the present disclosure.
Fig. 4 is a left side view of a jig for manufacturing a fiber fabric according to another exemplary embodiment of the present disclosure.
FIG. 5 is a schematic view of a blade according to an exemplary embodiment of the present disclosure.
The reference numbers illustrate:
1: a bundle of yarns; 2: binding yarns; 100: a fibrous layer; 101: an axial fiber bundle; 102: binding wires; 200: a jig; 201: a main body; 202: a trench; 203: a binding groove; 300: a blade; 301: a trailing edge; 302: the blade tip is swept backward.
Detailed Description
Hereinafter, a fiber fabric, a jig thereof, and a manufacturing method thereof according to exemplary embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. Like reference numerals refer to like parts throughout the drawings.
It will be understood that the use of the terms first, second, etc. may not denote any order or importance, but rather the terms first, second, etc. may be used to distinguish one element from another.
As shown in fig. 2, the fiber fabric of the exemplary embodiment of the present disclosure may include a fiber layer 100, the fiber layer 100 including: the plurality of axial fiber bundles 101 are arranged at intervals from each other in the first direction (y direction in fig. 2), and the axial orientation of the plurality of axial fiber bundles 101 (i.e., the length direction of the fiber fabric, x direction in fig. 2) is arc-shaped.
Compared with the conventional fiber fabric comprising the yarn bundles 1 in a linear shape, the fiber fabric according to the exemplary embodiment of the present disclosure has the fiber bundles 101 in an arc shape at least in the length direction so as to be more conformable to a curved structural member when used for the curved structural member, facilitating the laying.
According to the fiber fabric of the present disclosure, the axial fiber bundles 101 may also be referred to as yarn bundles, and each yarn bundle 101 may be bound together by one or more yarns, which may be typically glass fibers or carbon fibers, etc.
The plurality of axial fiber bundles 101 may be coaxially aligned, i.e., the plurality of axial fiber bundles in the fiber layer may have the same orientation and curvature. The present disclosure is not so limited and the camber of the axial orientation of the plurality of axial fiber bundles may also be different.
The axial fiber bundle 101 may have an arc shape in the second direction, which is the height direction (z direction in fig. 3) of the fiber fabric, so that the axial fiber bundle 101 has a curvature in both the longitudinal direction and the height direction, and the axial fiber bundle 101 has a three-dimensional curved structure.
Further, the first direction may also be a non-linear/non-linear direction. That is, the first direction has a curvature such that the plurality of axial fiber bundles are arranged spaced apart from each other along the first direction having a curvature. Therefore, the entire fiber fabric is in a three-dimensional arc shape, and has arcs in the longitudinal direction, the height direction, and the width direction of the fiber fabric.
According to the embodiment of the present disclosure, the axial fiber bundles are arranged so that the fiber fabric has an arc shape in at least one of a length direction, a width direction and a height direction of the fiber fabric to match the shape of the curved structural member.
The fiber web may include a plurality of fiber layers 100 stacked on top of one another to form a pre-formed fiber web. Therein, the axial orientation of the axial fiber bundles 101 in two adjacent fiber layers of the plurality of fiber layers 100 may be the same, i.e. forming a uniaxial fiber fabric. The disclosure is not limited thereto, and the axial orientation of the axial fiber bundles 101 in two adjacent fiber layers of the plurality of fiber layers 100 may also be different, so that different axial fiber fabrics such as biaxial, triaxial, tetraaxial, etc. may be formed. For example, in another embodiment, the fiber fabric may include at least three fiber layers 100, wherein the axial orientation of the axial fiber bundles 101 in one fiber layer is 0 degrees, the axial orientation of the axial fiber bundles in one fiber layer stacked above it is +45 degrees, and the axial orientation of the axial fiber bundles 101 in another fiber layer stacked below it is-45 degrees. The yarn bundles 101 in at least 0 degree direction may be arranged in an arc along the axial direction, and the arcs of each yarn bundle 101 may be different from each other.
The fabric according to the present disclosure may further include an inlay yarn (not shown) which may be arranged in a direction substantially perpendicular to the axial fiber bundles 101 for weaving with the yarn bundles into a net structure and securing the yarn bundle spacing effect.
The fiber fabric according to the present disclosure may further include a binding thread 102 binding the plurality of axial fiber bundles 101 and the padding yarn together, the binding thread 102 may connect the plurality of axial fiber bundles 101 together in a direction substantially perpendicular to the axial fiber bundles 101, and the binding thread 102 may adopt various common knitting patterns. For example, as shown in fig. 1, a short diagonal binding wire 1.
Another aspect of the present disclosure provides a jig for assisting in manufacturing the fiber fabric as described above, as shown in fig. 3, in an embodiment, the jig 200 may include a main body 201 and a guide mechanism, and the guide mechanism may include: a plurality of grooves 202 formed on the body 201 at intervals, each groove 202 of the plurality of grooves 202 having an arc shape in a length direction (x direction of fig. 3) to form an arc-shaped groove.
The jig 200 may further include a binding groove 203 arranged in a direction (y direction of fig. 3) perpendicular to the length direction of the groove 202. The present disclosure is not limited thereto and a closed binding hole (not shown) may be formed instead of the binding groove 203 having an opening as long as the binding wire 102 can be disposed.
When the jig 200 is used to manufacture the fiber fabric, the grooves 202 on the jig 200 can be used to control and realize the arc arrangement of the axial fiber bundles 101. Specifically, the plurality of axial fiber bundles 101 may be respectively placed in the plurality of grooves 202 of the guiding mechanism, and tension is applied to make the axial fiber bundles 101 in an arc shape to fit with the groove bottoms of the grooves 202; then, the plurality of axial fiber bundles 101 are bound together with the binding wires 102 to form the fiber layer 100. Of course, the above operations may also be repeated to form multiple layers of the fiber layer 100. After the weaving of the fabric is completed, the fabric is taken out of the jig 200, and is wound and packaged.
According to the present disclosure, the jig 200 may be made of a hard material, and when the axial fiber bundle 101 is under tension, the jig 200 is not deformed, thereby ensuring its guiding function.
In fig. 3, the jig 200 is shown to include four grooves 202 and three binding grooves 203, the grooves 202 and the binding grooves 203 are arc-shaped grooves, the bottoms of which are arc-shaped, for example, approximately semicircular, and the number of the grooves 202 is the same as the number of the axial fiber bundles 101 to be manufactured, but the disclosure is not limited thereto, and the number of the grooves 202 and the binding grooves 203 can be selected as required. In fig. 3, only the grooves 202 extending in the x direction in the longitudinal direction are shown, and a uniaxial fiber fabric can be produced by using the jig 200. However, the disclosure is not limited thereto, and as described above, in order to manufacture the different-direction axial fiber fabric, the jig 200 may further include a plurality of guide mechanisms, the length directions of the grooves in the plurality of guide mechanisms are different, for example, in addition to the groove 202 opened along the 0 degree direction in fig. 2, grooves opened along other directions (for example, at +45 degrees, -45 degrees from the x direction, etc.) may also be included. According to an embodiment of the present disclosure, the binding groove 203 described above may also be used as a groove for arranging the axial fiber bundle 101.
Fig. 2 can be seen as a top view of the axial fiber bundle 101 and the binding wire 102 arranged in the jig 200 in fig. 3, the axial fiber bundle 101 running in line with the groove 202 and having an arc shape in the length direction of the groove 202. The curvature of the plurality of grooves 202 in the length direction is uniform as shown in fig. 2, but the present disclosure is not limited thereto, and the curvature of the plurality of grooves 202 in the length direction may be different.
In addition, the groove depth of the groove 202 may be the same in the length direction of the groove 202. The disclosure is not limited thereto, and alternatively, the groove depth of the groove 202 may be different in the length direction of the groove 202, so that the axial fiber bundle 101 arranged in the groove 202 has a certain curvature in both the length direction and the height direction, and has a three-dimensional curved structure.
In another embodiment, the plurality of grooves 202 may also have different groove depths in the same cross section perpendicular to the length direction of the grooves 202, such that the plurality of grooves 202 are also arranged in an arc shape in the width direction. For example, fig. 4 may be regarded as a left side view of fig. 3 (i.e., viewed along the extending direction of the grooves 202), as shown in fig. 4, the groove depths of 8 grooves 202 are different on the same cross section perpendicular to the length direction of the grooves 202, so that 8 axial fiber bundles 101 are arranged at intervals along the direction of an imaginary line having a certain curvature after being arranged in the 8 grooves 202.
For a curved structural member, the material directions of some parts of the curved structural member need to be arranged in a three-dimensional curve direction, for example, as shown in fig. 5, the blade 300 of the wind turbine generator system needs to be turned (bent) at the position when laying the uniaxial cloth at the position because the trailing edge 301 of the blade near the maximum chord length is in a fish-belly shape, the laying operation at the position is difficult because the conventional uniaxial cloth comprises fibers in a linear shape, and in addition, the unidirectional cloth laying needs to be turned for the swept blade tip and the pre-twisted swept blade tip. Here, the swept wing refers to a wing in which both the leading edge and the trailing edge of the blade are swept backward.
The curved structure according to an exemplary embodiment of yet another aspect of the present disclosure includes the fiber fabric as described above, for example, the curved structure may have the fiber fabric as described above as a skeleton, the fiber fabric having a curvature matching the curved structure.
In an embodiment, the curved structural member may be a blade 300 of a wind turbine generator system, and the blade 300 is bent at the trailing edge 301 and the tip sweep 302, that is, the trailing edge 301 and the tip sweep 302 of the blade 300 form a curved bending portion, so that the fiber fabric at the trailing edge 301 and the tip sweep 302 may be the fiber fabric described above, that is, the fiber fabric with the arc structure described above is laid. When the method is particularly applied to the blades, the fiber fabric can be manufactured by weaving a section of arc fiber fabric and then splicing/transitioning to a common unidirectional fabric. According to the present disclosure, the use of an arc-wise fabric for the manufacture of blades has the advantages of: the laying is convenient, the quality problems of laying folds, inconsistency of yarn direction and design, hanging of laying layers, clearance between the laying layers and the surface of a mold and the like are not easy to cause, so that the structural performance of a product is ensured, and the laying time is shortened.
According to the fiber fabric of the embodiment of the disclosure, the fiber bundle 101 which is arc-shaped in at least one direction (for example, length direction) can be laid in a three-dimensional following bending mode when being used for a curved structural member, and is more fit with the curved structural member.
The fiber fabric can be at least applied to the blades of the wind generating set, mechanical strength and rigidity required by the blades are provided, the fiber fabric can be matched with the shape of the curved surface part of the blades, the layering attaching degree is high, no gap is formed, the fiber fabric is suspended, and the structural performance of the blades is guaranteed.
The above description is only a preferred embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and any changes or substitutions (e.g., combinations of features in different embodiments of the present disclosure) that can be easily conceived by a person skilled in the art within the technical scope of the present disclosure should be included in the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (16)

1. A fibrous fabric, characterized in that it comprises a fibrous layer (100), said fibrous layer (100) comprising: a plurality of axial fiber bundles (101) arranged at intervals in a width direction of the fiber fabric, the plurality of axial fiber bundles (101) having an arc-shaped axial orientation.
2. A fabric according to claim 1, wherein the radian of the axial orientation of the plurality of axial tows (101) is different.
3. A fibre fabric according to claim 1, wherein the axial fibre bundles (101) are curved in the height direction of the fibre fabric.
4. The fiber fabric of claim 1, wherein the fiber fabric has a curvature in a width direction.
5. A fibre fabric according to claim 1, characterized in that it comprises a plurality of said fibre layers (100) on top of each other.
6. A fibre fabric according to claim 5, wherein the axial orientation of the axial fibre tows (101) in two adjacent fibre layers (100) of the plurality of fibre layers (100) is different.
7. The fiber fabric of claim 1, wherein the fiber layer (100) further comprises binding threads (102) binding the plurality of axial fiber bundles (101) together.
8. A curved structure, characterized in that the curved structure is a skeleton of a fiber fabric according to any one of claims 1-7, the fiber fabric having a curvature matching the curved structure.
9. The curved structure according to claim 8, wherein the curved structure is a blade (300) of a wind turbine.
10. A jig for a fiber fabric, characterized in that the jig (200) comprises:
a main body (201); and
a guide mechanism, the guide mechanism comprising: a plurality of grooves (202) formed on the body (201) to be spaced apart from each other, each of the plurality of grooves (202) being arc-shaped in a length direction to form an arc-shaped groove.
11. A tool as claimed in claim 10, characterised in that the curvature of the grooves (202) in the length direction is different.
12. A tool as claimed in claim 10, characterised in that the grooves (202) have different groove depths in the length direction.
13. A tool as claimed in claim 10, characterised in that the grooves (202) have different groove depths in the same cross-section perpendicular to the length direction of the grooves (202) so that the grooves (202) are arranged in an arc.
14. A tool as claimed in claim 10, characterised in that the tool (200) comprises a plurality of the guide means, the length direction of the grooves (202) in the plurality of guide means being different.
15. A jig according to claim 10, characterized in that the jig (200) further comprises: a binding hole or a binding groove (203) arranged in a direction perpendicular to a length direction of the groove (202).
16. A method for manufacturing a fiber fabric, characterized in that the jig (200) according to any one of claims 10 to 15 is used for manufacturing the fiber fabric according to any one of claims 1 to 7, and the manufacturing method comprises:
placing the plurality of axial fiber bundles (101) in the plurality of grooves (202) of the guide mechanism respectively, and applying tension to make the axial fiber bundles (101) fit with the grooves (202) in an arc shape;
binding the plurality of axial fiber bundles (101) together with a binding thread (102) forming the fiber layer (100).
CN202010997527.1A 2020-09-21 2020-09-21 Fiber fabric, jig thereof and manufacturing method thereof Pending CN114248463A (en)

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CN202010997527.1A CN114248463A (en) 2020-09-21 2020-09-21 Fiber fabric, jig thereof and manufacturing method thereof

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Application Number Priority Date Filing Date Title
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CN114248463A true CN114248463A (en) 2022-03-29

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