阅读说明：本技术 一种单向织物及其经编工艺和应用方法 (Unidirectional fabric and warp knitting process and application method thereof ) 是由 季小强 谈昆伦 张韵 谭建军 巢钦 龚晓龙 于 2019-11-11 设计创作，主要内容包括：本发明涉及单向织物技术领域,具体涉及一种单向织物,包括经纱层和纬纱层,以及用于对经纱层和纬纱层进行捆绑的捆绑纱；捆绑纱所形成的线圈位于经纱层相邻两束经纱之间。通过上述方式,使得经纱层中的每一束经纱均保持其设定的角度,克服了经纱角度偏移问题,编织完成后的织物表面整齐且美观,且内部灌注通道清晰,有效保证了最终产品的力学性能和灌注工艺性能。同时,本发明中还请求保护单向织物的经编工艺和应用方法。(The invention relates to the technical field of unidirectional fabrics, in particular to a unidirectional fabric which comprises a warp yarn layer, a weft yarn layer and binding yarns for binding the warp yarn layer and the weft yarn layer; the loops formed by the binding yarns are positioned between two adjacent warp yarns of the warp yarn layer. Through the mode, each warp in the warp layer keeps the set angle, the problem of warp angle deviation is solved, the woven fabric is neat and attractive in surface, the inner filling channel is clear, and the mechanical property and the filling technological property of a final product are effectively guaranteed. Meanwhile, the invention also claims a warp knitting process and an application method of the unidirectional fabric.)

1. A unidirectional fabric, characterized by comprising a warp layer (1) and a weft layer (2), and binding yarns (3) for binding the warp layer (1) and the weft layer (2);

characterized in that the loops formed by the binding yarns (3) are positioned between two adjacent warp yarns of the warp layer (1).

2. Unidirectional fabric according to claim 1, characterized in that said loops formed by the same yarn of said binding yarn (3) are arranged alternately in two adjacent wales.

3. The unidirectional fabric of claim 2, wherein the loops are closed loop loops, open loop loops, or an alternating combination of open and closed loop loops.

4. Unidirectional fabric according to claim 1, characterized in that said binding yarns (3) form two loops in succession on a cross-section with the same yarn.

5. The unidirectional fabric of claim 4, wherein the loops are open loops or closed loops.

6. Unidirectional fabric according to claim 1, characterized in that the first yarn (3 a) of the binding yarn (3) is located on one side of the warp layer (1) and covers one warp yarn of the warp layer (1) in a reciprocating manner, a turning point (34) in the cycle is located between two adjacent warp yarns of the warp layer (1), and the second yarn (3 b) of the binding yarn (3) binds the turning point (34) to form a loop, so that the first yarn (3 a) is fixed.

7. A unidirectional fabric as claimed in any one of claims 1 to 6, wherein said warp (1) and weft (2) layers are selected from glass, carbon, basalt, aramid, ultra high molecular weight polyethylene, polyamide, polyphenylene sulfide, polyimide, polyester, polypropylene or nylon fibers.

8. Unidirectional fabric according to claim 8, characterized in that the warp (1) and weft (2) layers are of different material.

9. Warp-knitting process of unidirectional fabrics for the production of unidirectional fabrics according to claims 4 or 5, characterized in that the binding yarns (3) have a yarn feed speed of the same yarn in the course which is greater than the yarn feed speed at the stitch.

10. An application method of the unidirectional fabric, which is used for applying the unidirectional fabric in any one of claims 1-6, and is characterized by being used in wind power blades, rail transit equipment and automobile structures.

Technical Field

The invention relates to the technical field of unidirectional fabrics, in particular to a unidirectional fabric, a warp knitting process and an application method thereof.

Background

At present, the conventional unidirectional fabric assembly comprises a warp yarn layer and a weft yarn layer, and the above layers realize the forming of the whole unidirectional fabric through the binding of binding yarns.

In the existing weaving process, the following problems exist:

in research and analysis in the field for many years, no breakthrough progress has been made in the performance of the fabrics, mainly because the binding yarns tend to penetrate through the warp layer, as shown in fig. 1 and 2, and during the penetration process, the penetrated part of the warp layer is deflected at a certain angle relative to the preset 0 ° under the compression of the binding yarns, and the deflection causes the following problems:

A. the cloth surface is uneven;

B. the bulges are easy to bulge;

C. the internal perfusion channel is unclear;

the above problems greatly affect the mechanical properties and the pouring process properties of the final product.

In view of the above situation, the inventor of the present invention has actively researched and innovated based on the practical experience and professional knowledge of the engineering application of such products for many years, and together with the application of the theory, in order to create a unidirectional fabric, the warp knitting process and the application method thereof, so as to make the unidirectional fabric more practical.

Disclosure of Invention

The problem to be solved by the present invention is to provide a unidirectional fabric to solve the problems indicated in the background art. Meanwhile, the invention also claims a warp knitting process and an application method of the unidirectional fabric.

In order to achieve the purpose, the invention adopts the technical scheme that:

a unidirectional fabric comprising a warp layer and a weft layer, and binding yarns for binding the warp and weft layers;

the warp yarn is characterized in that a coil formed by the binding yarns is positioned between two adjacent warp yarns of the warp yarn layer.

Further, the loops formed by the same yarn of the binding yarn are alternately arranged in the adjacent two loop wales.

Further, the coil is a closed coil, an open coil or an open and closed coil.

Furthermore, the same yarn of the binding yarn continuously forms two loops on a cross line.

Further, the coil is an open coil or a closed coil.

Furthermore, a first yarn of the binding yarn is located on one side of the warp layer and covers one warp beam of the warp layer in a reciprocating mode, an inflection point in the circulation is located between two adjacent warp beams of the warp layer, and a second yarn of the binding yarn binds the inflection point to form a coil, so that the first yarn is fixed.

Further, the warp yarn layer and the weft yarn layer are selected from glass fibers, carbon fibers, basalt fibers, aramid fibers, ultra-high molecular weight polyethylene fibers, polyamide fibers, polyphenylene sulfide fibers, polyimide fibers, polyester fibers, polypropylene fibers or nylon fibers.

Furthermore, the warp yarn layer and the weft yarn layer are made of different materials.

The warp knitting process of the unidirectional fabric is used for producing the unidirectional fabric, and the yarn feeding speed of the same yarn of the binding yarn on the row is larger than that of the yarn at the coil.

An application method of a unidirectional fabric is used for applying the unidirectional fabric and is used for wind power blades, rail transit equipment and automobile structures.

Through the technical scheme, the invention has the beneficial effects that:

according to the technical scheme, each warp in the warp layer keeps the set angle, the problem of warp angle deviation is solved, the woven fabric is neat and attractive in surface, the inner filling channel is clear, and the mechanical property and the filling process property of a final product are effectively guaranteed.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic representation of a binding yarn traversing a bundle of warp yarns;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a schematic view of a closed channel structure according to an embodiment;

FIG. 4 is a simplified schematic of FIG. 3;

FIG. 5 is a simplified diagram of an open warp knit in accordance with one embodiment;

FIG. 6 is a simplified diagram of a warp knitting structure with open and closed loops alternately arranged according to one embodiment;

FIG. 7 is a schematic view of an open warp rebinning chain according to the second embodiment;

FIG. 8 is a simplified schematic of FIG. 7;

FIG. 9 is a schematic view of a closed warp rebinning chain according to the second embodiment;

FIG. 10 is a simplified schematic of FIG. 9;

FIG. 11 is a schematic view of a local force analysis of a medium obturator foramen transversum tissue according to an embodiment;

FIG. 12 is a schematic representation of the deformation of the bound warp yarns of FIG. 11;

FIGS. 13 and 14 are schematic views of the binding of a first yarn by a second yarn, showing the loops being closed loops and open loops, respectively;

FIG. 15 is a graph showing the tension of binding yarns formed at different thread feeding speeds for the same thread feeding time;

FIG. 16 is a graph of supply line time versus supply line volume;

FIG. 17 is a view of FIG. 16 at different positions corresponding to different positions of the binding yarns;

FIG. 18 is a graph comparing the transverse sections in the second embodiment at different linear velocities;

reference numerals: warp layer 1, weft layer 2, binding yarn 3, first yarn 3a, second yarn 3b, loop 31, transition 32, cross section 33, inflection point 34.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

In the description of the present invention, it should be noted that the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "oblique", etc. are based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and thus, should not be construed as limiting the present invention, wherein the description "transverse direction" and "longitudinal direction" are directional descriptions recognized by those skilled in the art in the weaving process of the fabric.

A unidirectional fabric comprises a warp yarn layer 1, a weft yarn layer 2 and a binding yarn 3 for binding the warp yarn layer 1 and the weft yarn layer 2; the loops formed by the binding yarns 3 are located between two adjacent warp yarns of the warp layer 1.

Through the mode, each warp in the warp layer 1 keeps the set angle, the problem of angle deviation shown in figures 1 and 2 is solved, the woven fabric is neat and attractive in surface, the inner filling channel is clear, and the mechanical property and the filling technological property of a final product are effectively guaranteed.

In order to explain the present invention more precisely, the present invention is optimized by the following examples, and specific embodiments are described in detail: