Bionic scale composite protective fabric and preparation method thereof

Abstract

The invention discloses a bionic scale composite protective fabric and a preparation method thereof, the preparation method comprises the following steps: weaving a plurality of fabrics with weft tubular bulge structures, and arranging the tubular bulge structures in a staggered manner; cutting off one end of the tubular bulge structure to form a staggered and overlapped integrated bionic scale structure, so as to obtain the bionic scale composite protective fabric. According to the design of the bionic fabric, the fish scale part and the fabric base body are integrally formed, and the problem that a scale structure is prone to falling off in a traditional pasting method is solved. After the scale part of the fabric is compounded with the hard scale, stress can be quickly dispersed when the fabric is subjected to external impact force, and the protection performance is effectively improved. In addition, the structure keeps high flexibility and air permeability, excellent comfort and portability are provided for a wearer, and the protective clothing is suitable for the field of various personal protective equipment.

Description

Technical Field

[0001] The present invention belongs to the technical field of protective fabrics, and particularly relates to a bionic scale composite protective fabric and a preparation method thereof. Background Art

[0002] Most traditional bulletproof and stab-resistant materials are mainly made of metals or hard materials. Although they have good protective performance, they are lacking in terms of comfort and flexibility. Flexible protective fabrics have problems such as a large number of layers, poor puncture resistance against sharp objects, and at the same time, too many layers will cause problems of decreased flexibility and increased cost. Fishes such as alligator gars in nature have both hard scales and sufficient flexibility, achieving the unity of protection and flexibility.

[0003] Developing a bionic scale composite protective fabric, adopting an innovative fabric structure design and weaving method to form a fabric with high protective performance, while ensuring its comfort and flexibility, and better meeting the requirements of modern personal protective equipment, is a technical problem to be solved. Summary of the Invention

[0004] The purpose of this part is to outline some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments.

[0005] As one aspect of the present invention, the present invention provides a preparation method of a bionic scale composite protective fabric, which includes: first weaving a plurality of fabrics with a weft tubular protrusion structure, and the tubular protrusion structures are arranged staggeredly; cutting one end of the tubular protrusion structure to form an integrated bionic scale structure with staggered overlap, and obtaining the bionic scale composite protective fabric.

[0006] As a preferred scheme of the preparation method of the bionic scale composite protective fabric described in the present invention: the plurality of fabrics with a weft tubular protrusion structure include Region 1, Region 2 and Region 3, and each Region 1 and Region 2 are separated by Region 3, and Region 1 and Region 2 are arranged alternately and repeatedly; both Region 1 and Region 2 are composed of a plurality of weft tubular protrusion structures and ground tissues arranged at intervals, the tubular protrusion structures in Region 1 and the tubular protrusion structures in Region 2 are arranged staggeredly, and after cutting one end of the tubular protrusion structure, the tubular protrusion structures in Region 1 and the tubular protrusion structures in Region 2 overlap each other; Region 3 is a ground tissue.

[0007] As a preferred scheme of the preparation method of the bionic scale composite protective fabric described in the present invention: both Region 1 and Region 2 are woven with a plain weave.

[0008] As a preferred embodiment of the preparation method of the bionic scale composite protective fabric described in the present invention: in the warping process during the weaving of the bionic scale composite protective fabric, 3 warp beams are used. The warp yarns corresponding to the tubular protrusion structures in region 1 are on the first warp beam, the warp yarns corresponding to the tubular protrusion structures in region 2 are on the second warp beam, and the warp yarns corresponding to the remaining ground tissues are on the third warp beam; wherein, the lengths of the warp yarns on the first warp beam and the second warp beam are greater than the length of the warp yarns on the third warp beam.

[0009] As a preferred embodiment of the preparation method of the bionic scale composite protective fabric described in the present invention: in the warp threading process during the weaving of the bionic scale composite protective fabric, a variable number of warp threads per reed is adopted. Among them, in the integrated bionic scale structure with dislocation and overlap, the number of warp threads inserted into the reed at the overlapping part is 4 threads per reed, and the rest is 2 threads per reed.

[0010] As a preferred embodiment of the preparation method of the bionic scale composite protective fabric described in the present invention: when weaving region 3, a plain weave is adopted, and the weft yarn runs through the entire fabric surface and interweaves with all warp yarns to form the ground tissue.

[0011] As a preferred embodiment of the preparation method of the bionic scale composite protective fabric described in the present invention: when weaving region 1, the method of passing the warp and cutting the weft is adopted: first, the tubular protrusion structure in region 1 is woven. At this time, only the warp yarns corresponding to the tubular protrusion structure are interwoven with the weft yarn, and each tubular protrusion structure is provided with a separate weft yarn to interweave with its corresponding warp yarn;

[0012] When weaving the tubular protrusion structure, beating-up is carried out using a variable stroke beating-up process: after each weft yarn is woven in, the cloth fell is advanced accordingly, and at this time, the beating-up stroke should be decreased by the distance of one weft yarn accordingly, and so on until the required length of the tubular protrusion structure is completed, thereby completing the weaving of the tubular protrusion structure;

[0013] Then, the ground tissue in region 1 is woven. At this time, the warp yarns corresponding to the tubular protrusion structures in region 1 do not participate in the weaving, and the remaining warp yarns are interwoven with the weft yarn to form the ground tissue;

[0014] Finally, beating-up with a large stroke is adopted to beat the end of the tubular protrusion structure to the cloth fell of the ground tissue, thereby joining the tubular protrusion structure and the ground tissue together to complete the weaving of region 1;

[0015] The weaving of region 2 is completed by the same method as that of region 1.

[0016] As a preferred embodiment of the preparation method of the bionic scale composite protective fabric described in the present invention: it further includes pasting a hard surface layer on the bionic scale structure to form a hard scale layer.

[0017] As a preferred embodiment of the preparation method of the bionic scale composite protective fabric described in the present invention: the hard scale layer includes a carbon fiber board, an aluminum plate, a ceramic plate or a resin material.

[0018] Beneficial effects of the present invention: The present invention develops a bionic scale composite protective fabric, which is composed of a hard scale and a fabric with a fish scale structure. The fabric with a fish scale structure simulates the natural arrangement of alligator gar scales and is woven with aramid fibers. First, an interlaced tubular fabric is woven, and an integrated scale structure with staggered overlap is formed by cutting one end. The design of the bionic fabric of the present invention realizes the integrated molding of the fish scale part and the fabric matrix, avoiding the problem that the scale structure is easy to fall off by the traditional pasting method. After the scale part of the fabric is compounded with the hard scale, the fabric can quickly disperse stress when subjected to external impact force, effectively improving the protective performance. In addition, this structure maintains high flexibility and breathability, providing excellent comfort and portability for the wearer, and is applicable to various personal protective equipment fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Among them:

[0020] Figure 1 It is a schematic diagram of the fabric of the present invention with a weft tubular convex structure.

[0021] Figure 2 It is a top view of the fabric of the present invention with a weft tubular convex structure.

[0022] Figure 3 It is a physical diagram of the fabric of the present invention with a weft tubular convex structure.

[0023] Figure 4 It is a top view of the bionic scale composite protective fabric of the present invention.

[0024] Figure 5 It is the bionic scale composite protective fabric diagram (a) of the present invention and the bionic scale composite protective fabric diagram (b) pasted with a hard surface layer.

[0025] Figure 6 It is a diagram of the cone penetration performance test result of the bionic scale fabric of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the following will make a detailed description of the specific embodiments of the present invention in conjunction with specific embodiments.

[0027] Example 1:

[0028] The preparation method of the bionic scale composite protective fabric of the present invention is as follows: First, several fabrics with a weft tubular protrusion structure are woven, and they are arranged alternately between every two rows of weft tubular protrusion structures; one end of the tubular protrusion structure is cut open to form an integrated bionic scale structure with staggered overlap, and the bionic scale composite protective fabric is obtained.

[0029] Specifically, several fabrics with a weft tubular protrusion structure include three regions, and each region 1 and region 2 are separated by region 3, and region 1 and region 2 are arranged alternately and repeatedly; region 1 includes a row of weft-spaced tubular protrusion structures and a ground tissue, and the ground tissue is woven by a plain weave; region 2 includes a row of weft-spaced tubular protrusion structures and a ground tissue, and the tubular protrusion structures in region 1 and the tubular protrusion structures in region 2 are arranged alternately in the warp direction, so that after one end of the tubular protrusion structure is cut open, the tubular protrusion structures in region 1 and the tubular protrusion structures in region 2 overlap each other; region 3 is a ground tissue and is woven by a double plain weave.

[0030] The specific weaving method of the bionic scale composite protective fabric of the present invention is as follows:

[0031] 1. Warping process: 3 warp beams are used. When warping, the warp yarns are divided into 3 parts. Among them, the warp yarns corresponding to the tubular protrusion structures in region 1 are separately on a warp beam 1, and the warp yarns corresponding to the tubular protrusion structures in region 2 are separately on a warp beam 2; the ground warp part corresponding to the ground tissue is separately on a warp beam 3. Among them, the warp yarn lengths of warp beam 1 and warp beam 2 are significantly longer than the warp yarn length of warp beam 3. Such a process can ensure the separate control of the warp yarn tensions of each warp beam.

[0032] 2. Harnessing process:

[0033] The harness configuration adopts the direct warping method, and a total of 8 harnesses are used to meet the weaving requirements. Harnesses 1, 2, 5, and 6 are used as the ground tissue weaving system, and harnesses 3, 4, 7, and 8 are used as the weaving system of the tubular protrusion structures, and they are woven alternately. By adopting an alternating and interspersed warp yarn arrangement method, the warp yarns are respectively used as the warp yarn systems of the upper and lower layers of the fabric. This arrangement method can ensure the seamless docking at the junction of the upper and lower layers of the fabric, and further effectively prevent the phenomenon of a loose structure at the edge of the fabric in the unfolded state. The fabric is harnessed in the order of (1, 4, 2, 3)×4, (1, 4, 2, 3, 5, 8, 6, 7)×4, (5, 8, 6, 7)×4, (7, 6, 8, 5)×4, (7, 6, 8, 5, 3, 2, 4, 1)×4, (3, 2, 4, 1)×4, forming a large weave repeat, which includes 4 repeats in total.

[0034] 3. Reed threading process: The variable dent reed threading is adopted. The denting of the overlapping part where the integrated bionic scale structure with staggered overlap overlaps is 4 ends per dent, and the rest are 2 ends per dent.

[0035] 4. Weaving process: When weaving in area 3, a plain double weave is adopted, and the weft yarn runs through the entire fabric surface and interweaves with all warp yarns to form the fabric surface.

[0036] When weaving in area 1, first weave the tubular convex structure in area 1. At this time, all other warp yarns remain stationary, and only the warp yarns corresponding to the tubular convex structure interweave with the weft yarn. The weave is a plain weave, and each tubular convex structure is provided with a separate weft yarn to interweave with its corresponding warp yarn. That is, the tubular convex structure part adopts the technique of passing the warp and cutting the weft. The number of shuttles required is corresponding to the number of tubular convex structures formed. Among them, the beating-up of the tubular convex structure part adopts the variable stroke beating-up process, that is, after each weft yarn is woven in, the fell of the cloth will move forward accordingly, and at this time, the beating-up stroke should be decreased by the distance of one weft yarn accordingly, and so on until the required length of the tubular convex structure is completed, thus completing the weaving of the tubular convex structure; then weave the ground weave in area 1. The warp yarns corresponding to the tubular convex structure in area 1 are in the upper layer and do not participate in the weaving. The remaining warp yarns interweave with the weft yarn to form the ground weave, and then adopt a large stroke beating-up to beat the end of the tubular convex structure to the fell of the ground weave, connecting the tubular convex structure and the ground weave together, thus completing the weaving of area 1.

[0037] Weave area 2 in the same way as area 1, except that the warp yarns of the tubular convex structure are rotated, thus completing the weaving of area 2.

[0038] Finally, cut one end of each woven tubular convex structure and flatten it to form scales. Since the tubular convex structures in area 1 and area 2 overlap each other after being cut at one end, an interlaced scale-like fabric is formed after unfolding.

[0039] In summary, the present invention makes a bionic design by referring to the scale structure of the alligator gar, uses a fabric with an interlaced tubular convex structure as a template, cuts one end of the tubular convex structure to form surface protruding scales that overlap each other, and the other end of the scale is integral with the fabric.

[0040] Perform a cone puncture performance test on the bionic scale fabric of the present invention, as Figure 6 shown. Figure 6 To test the anti-puncture performance of the fabric using a conical head, as can be seen from Figure 6 it, the peak load for a common single-layer fabric to be punctured is 39 N, the peak load for a double-layer fabric to be punctured is 64 N, and the peak load for the scale armor fabric to be punctured is 219 N. It can be seen that the scale armor fabric has excellent anti-puncture performance.

[0041] Flexibility performance test of the bionic scale fabric:

[0042] Flexibility is judged by the hanging angle and bending stiffness, and the reference standard is GB / T 18318-200 "Determination of Fabric Bending Length of Textiles". The specimen is placed on a smooth tabletop along the horizontal or vertical direction. One side of the tabletop is fixed with a heavy object, and a certain force is applied to the other side and maintained for a period of time. After the specimen is stable, take a photo and use an electronic protractor measuring tool to measure the projection angle α. The larger α is, the better the flexibility. After measurement, the projection angle α is 45°. It shows that the bionic fabric has good flexible performance.

[0043] The present invention can also form a hard scale layer by pasting a hard surface layer on the scale-like fabric. The hard scale layer can be composed of a carbon fiber board, an aluminum plate, a ceramic plate, a resin composite material, etc. The maximum cone piercing load exhibited by the carbon fiber board composite scale fabric is 312.49 N.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A method for preparing a bionic scale armor composite protective fabric, characterized in that: Firstly, a plurality of fabrics with weft tubular protruding structures are woven, wherein the tubular protruding structures are arranged in a staggered manner; one end of the tubular protruding structure is cut to form an integrated bionic scale armor structure with staggered overlap, thereby obtaining a bionic scale armor composite protective fabric.

2. The method for preparing the bionic scale armor composite protective fabric according to claim 1, characterized in that: The fabrics with the weft tubular protrusion structures include region 1, region 2 and region 3, each region 1 and region 2 are separated by region 3, and region 1 and region 2 are arranged alternately and repeatedly; region 1 and region 2 are composed of a plurality of weft tubular protrusion structures and ground tissues arranged at intervals, the tubular protrusion structure of region 1 and the tubular protrusion structure of region 2 are arranged alternately, and after cutting one end of the tubular protrusion structure, the tubular protrusion structure of region 1 and the tubular protrusion structure of region 2 overlap each other; region 3 is the ground tissue.

3. The method for preparing the bionic scale armor composite protective fabric according to claim 2, characterized in that: Both area 1 and area 2 are woven with plain weave.

4. The method for preparing the bionic scale armor composite protective fabric according to claim 2 or 3, characterized in that: The bionic scale armor composite protective fabric adopts three warp beams in the warping process during weaving, the warp yarns corresponding to the tubular protrusion structure of area 1 are on the first warp beam, the warp yarns corresponding to the tubular protrusion structure of area 2 are on the second warp beam, and the warp yarns corresponding to the remaining ground tissues are on the third warp beam; wherein the warp yarn lengths of the first warp beam and the second warp beam are greater than the warp yarn lengths of the third warp beam.

5. The method for preparing the bionic scale armor composite protective fabric according to claim 2 or 3, characterized in that: The bionic scale armor composite protective fabric adopts a variable reeding number in the warp yarn reeding process during weaving, wherein, in the staggered and overlapping integrated bionic scale armor structure, the number of warp yarn reedings at the overlapping parts is 4 per reed, and the rest is 2 per reed.

6. The method for preparing the bionic scale armor composite protective fabric according to claim 2 or 3, characterized in that: When weaving area 3, a double plain weave is used, and the weft yarn runs through the entire fabric surface and is interwoven with all the warp yarns to form a ground weave.

7. The method for preparing the bionic scale armor composite protective fabric according to claim 2 or 3, characterized in that: When weaving area 1, the method of passing the warp and breaking the weft is adopted: first, the tubular raised structure of area 1 is woven, at which time only the warp yarns corresponding to the tubular raised structure are interwoven with the weft yarns, and each tubular raised structure is provided with a separate weft yarn interwoven with its corresponding warp yarn; The beating-up process for weaving the tubular raised structure adopts a variable-range beating-up process: after each weft yarn is woven in, the cloth fell moves forward accordingly, and the beating-up stroke at this time should be reduced by the distance of one weft yarn, and so on, until the required length of the tubular raised structure is completed, thereby completing the weaving of the tubular raised structure; Then, the ground weave of area 1 is woven, at which time the warp yarns corresponding to the tubular raised structures of area 1 do not participate in weaving, and the remaining warp yarns are interwoven with the weft yarns to form the ground weave; Finally, a large-stroke beating is used to beat the end of the tubular raised structure to the weaving opening of the ground fabric, thereby connecting the tubular raised structure with the ground fabric to complete the weaving of area 1; The weaving of area 2 is completed in the same way as area 1.

8. The method for preparing the bionic scale armor composite protective fabric according to claim 2 or 3, characterized in that: The method also includes adhering a hard surface layer on the bionic scale armor structure to form a hard scale armor layer.

9. The method for preparing the bionic scale armor composite protective fabric according to claim 2 or 3, characterized in that: The hard scale layer comprises a carbon fiber plate, an aluminum plate, a ceramic plate or a resin material.

10. The bionic scale armor composite protective fabric prepared by the method for preparing the bionic scale armor composite protective fabric according to claim 1.

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