Composite multifunctional protective fabric and preparation method thereof

Abstract

The invention discloses a composite multifunctional protective fabric and a preparation method thereof.The composite multifunctional protective fabric is composed of three kinds of warp yarn and two kinds of weft yarn, the three kinds of warp yarn comprise the first warp yarn, the second warp yarn and the third warp yarn, and the two kinds of weft yarn comprise the first weft yarn and the second weft yarn; the warp yarns A, the warp yarns B and the weft yarns A are all composed of aramid fibers, aramid fibers 1313, aramid fibers 1414 and conductive fibers, the warp yarns C are aramid fibers 400D, and the weft yarns B are aramid fibers 200D; the number of the warp yarns A is larger than that of the warp yarns B, and the number of the warp yarns A is the same as that of the weft yarns A. Through an interweaving mode of three kinds of warp yarns and two kinds of weft yarns, the fabric can simultaneously have multiple protection functions of extreme high temperature resistance, permanent flame retardance, ultrahigh strength, excellent chemical corrosion resistance, lasting antistatic property and the like on the premise that a functional after-finishing coating is not needed; the fabric is excellent in performance, durable and suitable for manufacturing high-performance protective clothing in extreme environments such as fire fighting, emergency rescue and special industry.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of textiles, in particular to a composite multifunctional protective fabric and a preparation method thereof. BACKGROUND

[0002] With the increasing complexity of the operating environment in the fields of fire fighting, emergency rescue, special industry and military, unprecedentedly high requirements are put forward for the performance of protective equipment. The operating personnel may simultaneously face multiple coupled threats such as high-temperature flame, deflagration arc, sharp mechanical impact, strong corrosive chemicals and secondary explosion caused by static electricity accumulation. Therefore, it is an urgent demand and a major challenge in the current protective technology field to develop a fabric that can integrate multiple top-level protection functions, and has durable, light and reliable performance.

[0003] At present, the prior art lacks a fabric solution that can be innovatively designed from fiber raw material compatibility, yarn structure to fabric structure, so as to have multiple protection functions such as ultimate high-temperature resistance, permanent flame retardance, ultrahigh strength, excellent chemical corrosion resistance and persistent antistatic property, thereby realizing permanent and multidimensional top-level protection without excessive dependence on functional finishing. SUMMARY

[0004] The present application aims to provide a composite multifunctional protective fabric and a preparation method thereof, to solve the problem in the prior art that there is a lack of special protective fabric having multiple protection functions such as ultimate high-temperature resistance, permanent flame retardance, ultrahigh strength, excellent chemical corrosion resistance and persistent antistatic property.

[0005] To solve the above technical problems, the first solution provided by the present application is a composite multifunctional protective fabric, which is composed of three warp yarns and two weft yarns. The three warp yarns include warp yarn A, warp yarn B and warp yarn C, and the two weft yarns include weft yarn A and weft yarn B. The warp yarn A, the warp yarn B and the weft yarn A are each composed of para-aramid fiber, aramid fiber 1313, aramid fiber 1414 and conductive fiber, the warp yarn C is aramid fiber 400D, and the weft yarn B is aramid fiber 200D. The number of the warp yarn A is greater than the number of the warp yarn B, and the number of the warp yarn A is the same as the number of the weft yarn A.

[0006] In some embodiments, the warp yarn A, the warp yarn B and the weft yarn A are each composed of 50% para-aramid fiber, 38% aramid fiber 1313, 10% aramid fiber 1414 and 2% conductive fiber by weight.

[0007] In some embodiments, the warp yarn A is a strand with a number of 14.8texx2, the warp yarn B is a strand with a number of 11.8texx2, the warp yarn C is aramid fiber filament with a denier of 400D, the weft yarn A is a strand with a number of 14.8texx2, and the weft yarn B is filament with a denier of 200D.

[0008] In some embodiments, the arrangement ratio of the three warp yarns in the composite multifunctional protective fabric is warp yarn A 2 / warp yarn C 1 / warp yarn A 2 / warp yarn B 1; the arrangement ratio of the two weft yarns in the composite multifunctional protective fabric is weft yarn A 1 / weft yarn B 1.

[0009] In some embodiments, the warp density of the composite multifunctional protective fabric is 426 / 10 cm, and the weft density is 366 / 10 cm.

[0010] In some embodiments, the fabric width of the composite multifunctional protective fabric is 160-161 cm.

[0011] To solve the above technical problems, the second solution provided by the present application is a preparation method of a composite multifunctional protective fabric, which is used to prepare the composite multifunctional protective fabric in the first solution, and comprises the following steps: S1, a bobbin process: three kinds of warp yarns and two kinds of weft yarns are prepared respectively; wherein the warp yarn A is a 14.8 tex x 2 strand line with a weight ratio of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, the warp yarn B is a 14.8 tex x 2 strand line with a weight ratio of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, the warp yarn C is a filament of aramid 400D, the weft yarn A is a 14.8 tex x 2 strand line with a weight ratio of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, and the weft yarn B is a filament of aramid 200D.

[0012] S2, a warping process: the three kinds of warp yarns are warped, and the total head fraction is 6812, and the uniform speed control of the speed is 400-420 m / min.

[0013] S3, a reeding process: the reeding method of the ground organization is 3 entries, the reeding method of the edge organization is a straight reeding method, 15 reed teeth are reeded on one side, 3 entries are reeded on the warp yarn A, and 4 entries are reeded on the most edge reed; the reed stopper is reeded in the order of 1.2.3.4.5.6; 10 pages of heald frames are used; the ground organization reeding method is 1.2.4.3.1.6.2.3.4.1.2.7.3.1.4.2.3.8.1.3.4.2.1.7.3.2.4.1.3.6.2.1.4.3.2.5, and a cycle is 36 roots.

[0014] S4, a weaving process: the three kinds of warp yarns and the two kinds of weft yarns are woven, the speed is 400 r / min, the back beam is set to 8 / 4 / 2 / 1 (spring 3), the warp stopper is set to -2 / 0, the heald flat time is 290 degrees, the cloth surface tension is 4000 N, and the composite multifunctional protective fabric is obtained.

[0015] In some embodiments, in the S2 warping process, the warping tension is configured with medium tension, the tension is configured with front, middle and rear segmentation method, and the edge tension is increased by 2 scales compared with the front area; the total head fraction of the three warp yarns is 6812, wherein warp yarn A is 4572 parts, the warping upper row number is 152 (front), and the beam number is 30; warp yarn B is 1120 parts, the warping upper row number is 112 (rear), and the beam number is 10; warp yarn C is 1120 parts, the warping upper row number is 112 (rear), and the beam number is 10; the speed control is 400 m / min, and the winding air pressure is 2-2.5 bar.

[0016] In some embodiments, in the S3 reeding process, the head fraction of warp yarn A is 4572, the head fraction of warp yarn B is 1120, and the head fraction of warp yarn C is 1120; the reed number is 13.5 teeth / cm, the reed width is 168.1 cm, the ground weave reeding method is 1.2.4.3.1.6.2.3.4.1.2.7.3.1.4.2.3.8.1.3.4.2.1.7.3.2.4.1.3.6.2.1.4.3.2.5, a total of 36 roots per cycle; the reeding method is 3 reed-in, the edge weave reeding method is 9.10., 15 reed edge 3-in reed warp, the most edge reed 4-in, the warp stopper reeding method is 1.2.3.4.5.6., the waste edge is reserved, and each root harness is reserved; wherein, 1.2.3.9.10. warp yarn A front shaft, 4.5.6.7.8. rear shaft, and 4 warp yarn C, 5.6.7.8. warp yarn B.

[0017] In some embodiments, in the S4 weaving process, the harness frame height from the 1st page to the 10th page is 120 mm, 120 mm, 120 mm, 124 mm, 124 mm, 124 mm, 124 mm, 124 mm, 128 mm, and 128 mm, respectively, and the opening from the 1st page to the 10th page is 130 mm, 120 mm, 110 mm, 100 mm, 90 mm, 80 mm, 70 mm, 60 mm, 50 mm, and 40 mm, respectively.

[0018] The composite multifunctional protective fabric in the foregoing first solution and second solution is suitable for protective equipment in operating environments such as firefighting, emergency rescue, special industry, and military.

[0019] The beneficial effects of this invention are as follows: Unlike existing technologies, this invention organically combines the extreme temperature and corrosion resistance of aramid fiber, the durable flame retardancy of aramid 1313, the high strength of aramid 1414, and the durable antistatic ability of conductive fibers through the interlacing of three warp yarns and two weft yarns. This allows the fabric to simultaneously possess multiple protective functions, including extreme high-temperature resistance, permanent flame retardancy, ultra-high strength, excellent chemical corrosion resistance, and durable antistatic properties, without the need for functional finishing coatings. This composite multifunctional protective fabric boasts superior performance and durability, making it particularly suitable for manufacturing high-performance protective clothing for extremely complex and dangerous environments such as firefighting, emergency rescue, special industries, and military fields. Attached Figure Description

[0020] Figure 1 This is a diagram of the fabrication process in the preparation method of the composite multifunctional protective fabric of Embodiment 1 of the present invention; Figure 2 This is a pattern diagram from the preparation method of the composite multifunctional protective fabric in Embodiment 1 of the present invention. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the invention, are intended to cover non-exclusive inclusion.

[0023] In this invention, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0024] Existing high-end protective fabrics, such as aramid fabrics, while possessing good flame retardancy and heat resistance, still exhibit insufficient protective performance in extreme high-temperature and highly corrosive environments. Furthermore, their functionality is limited, making it difficult to simultaneously meet multiple requirements such as high strength and permanent antistatic properties. In addition, the functions of conventional fabrics are mostly achieved through post-treatment coatings, which suffer from poor durability and a stiff feel.

[0025] To address the aforementioned problems, the first solution provided by this invention is a composite multifunctional protective fabric. This composite multifunctional protective fabric consists of three warp yarns and two weft yarns. The three warp yarns include warp yarn A, warp yarn B, and warp yarn C, and the two weft yarns include weft yarn A and weft yarn B. Warp yarn A, warp yarn B, and weft yarn A are all composed of polytetrafluoroethylene (PTFE fiber), aramid 1313 (meta-aramid fiber), aramid 1414 (para-aramid fiber), and conductive fiber. Warp yarn C is aramid 400D, and weft yarn B is aramid 200D. The yarn number of warp yarn A is greater than that of warp yarn B, and the yarn number of warp yarn A is the same as that of weft yarn A. In some embodiments, warp yarn A, warp yarn B, and weft yarn A are all composed of 50% polytetrafluoroethylene, 38% aramid 1313, 10% aramid 1414, and 2% conductive fiber by weight.

[0026] The principle behind the composite multifunctional protective fabric designed in this invention is as follows: 1) This invention combines the advantages of each component by adjusting the proportion of polyvinyl chloride, aramid 1313, aramid 1414 and conductive fiber. This results in a multi-protective fabric that combines the extreme temperature and corrosion resistance of polyvinyl chloride, the long-lasting flame retardancy of aramid 1313, the high strength of aramid 1414 and the long-lasting antistatic ability of conductive fiber. This makes up for the disadvantages of each single component and achieves an integrated multi-protective function fabric.

[0027] 2) In this invention, for three different warp yarns, blended yarns composed of methylene, aramid 1313, aramid 1414 and conductive fibers of different numbers are interwoven. For two different weft yarns, blended yarns composed of methylene, aramid 1313, aramid 1414 and conductive fibers are interwoven with aramid 400D. From the perspective of structural design, this further enhances the fusion of the advantages of methylene, aramid 1313, aramid 1414 and conductive fibers.

[0028] 3) This invention achieves a paradigm shift in protective fabrics through synergistic innovation in materials, structure, and processes. Its pioneering "methylene blue / biaramid / conductive fiber" quaternary composite system chemically bonds extreme temperature resistance, ultra-high strength, and permanent antistatic properties at the fiber's origin. This fundamentally surpasses the limitations of traditional fabrics that rely on functional layering or finishing coatings. This technology produces a durable, lightweight, and reliable integrated protective system, providing a revolutionary material basis for addressing extremely complex threats in fire protection, special industries, and the military.

[0029] In some embodiments, warp yarn A is a 14.8tex×2 ply yarn, warp yarn B is an 11.8tex×2 ply yarn, warp yarn C is a 400D denier aramid filament, weft yarn A is a 14.8tex×2 ply yarn, and weft yarn B is a 200D denier filament.

[0030] In some embodiments, the arrangement ratio of the three warp yarns in the composite multifunctional protective fabric is warp yarn A2 / warp yarn C1 / warp yarn A2 / warp yarn B1; the arrangement ratio of the two warp yarns in the composite multifunctional protective fabric is weft yarn A1 / weft yarn B1.

[0031] In some implementations, the composite multifunctional protective fabric has a warp density of 426 threads / 10cm and a weft density of 366 threads / 10cm.

[0032] In some implementations, the fabric width of the composite multifunctional protective fabric is 160~161cm.

[0033] The second solution provided by this invention is a method for preparing a composite multifunctional protective fabric. This method is used to prepare the composite multifunctional protective fabric in the aforementioned first solution, and includes the following steps: S1 Winding Process: Prepare three types of warp yarns and two types of weft yarns respectively; among them, warp yarn A is a 14.8tex×2 ply yarn with a weight ratio of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, warp yarn B is a 14.8tex×2 ply yarn with a weight ratio of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, warp yarn C is an aramid 400D filament, weft yarn A is a 14.8tex×2 ply yarn with a weight ratio of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, and weft yarn B is an aramid 200D filament.

[0034] S2 Warping Process: Warping of three types of warp yarns, with a total of 6812 warp ends, and a machine speed controlled at a constant 400-420 m / min. In this process, the warping tension is configured at a medium tension, using a front, middle, and back segmented tension configuration, with the edge tension increasing by two increments compared to the front section. The total number of warp ends for the three types of warp yarns is 6812, of which warp yarn A has 4572 ends, with 152 warp rows (front) and 30 warp beams; warp yarn B has 1120 ends, with 112 warp rows (back) and 10 warp beams; and warp yarn C has 1120 ends, with 112 warp rows (back) and 10 warp beams. The machine speed is controlled at 400 m / min, and the winding air pressure is 2-2.5 bar to ensure uniform warp beam length and warp yarn tension.

[0035] In the warping process, tension, arrangement, and winding are all uniform. The tension is configured using a segmented method, with appropriate weight added to the selvage yarn. Therefore, the following measures are taken in the warping process: 1. Tension control: Medium tension is used to prevent small loops. The tension is configured in sections of front, middle and back, and the tension at the edge is increased by 2 scales compared to the front section to accommodate the phenomenon of loose edges in the sizing.

[0036] 2. Control the vehicle speed at a relatively low level of 400-420 meters per minute. The speed must be kept stable to reduce feathers and stray hairs.

[0037] 3. Equipment Control: ① The positions of the yarn guides on the warping bobbins and the tension frames should correspond, and tension frames should be aligned in the same row and column; ② Clean the yarn passages, yarn guides, yarn guide nozzles, and all rollers at the head of the machine to prevent the yarn from developing fuzz in the warping path; ③ Ensure the bobbin supports are aligned vertically and horizontally; ④ Avoid damage or grooving in all passage areas. The above processes are designed to reduce fuzz and small loops.

[0038] 4. Operation Control: ① Before starting the machine, thoroughly clean all yarn channels and the machine head. During operation, clean regularly to prevent lint accumulation and the introduction of fly lint. Clean any lint accumulated in the telescopic reed immediately, and clean any lint accumulated under the yarn surface in the telescopic reed once per warp. ② During operation, patrol regularly to observe whether each tension disc rotates smoothly and whether any threads have come loose. ③ In the first 5 meters of operation, strictly align both sides to ensure there is no sparseness or folding, achieving even tension arrangement, winding, and reducing the generation of fly lint and fuzz. ④ Operationally, ensure "even yarn shedding, accurate yarn shedding, smooth yarn shedding, and secure joints" to eliminate yarn twisting and breakage, and improve warp beam quality.

[0039] 5. The yarn at the bottom of the bobbin must be collected completely, without any missing or fallen yarn, and must not be mixed with other yarns. The yarn should be returned to the bobbin in a timely manner, and all returned yarn should be used as weft yarn (on a fixed machine).

[0040] S3 reed threading process: The reed threading method for the ground weave is 3-in, and the reed threading method for the edge weave is the forward threading method, with 15 reed teeth on one side threading the edge, 3-in threading per reed threading the warp, and 4-in threading on the outermost reed; the stop warp threading method is 1, 2, 3, 4, 5, 6 forward threading; 10 heddle frames are used; the heddle threading method for the ground weave is 1, 2, 4, 3, 1, 6, 2, 3, 4, 1, 2, 7, 3, 1, 4, 2, 3, 8, 1, 3, 4, 2, 1, 7, 3, 2, 4, 1, 3, 6, 2, 1, 4, 3, 2, 5, for a total of 36 threads per cycle. In this process, the heddles must be evenly arranged and move flexibly; the reed threading process must straighten the yarn and check the quality in a timely manner to prevent incorrect threading or twisting; the heddles, reeds, and reeds must be smooth and free of damage, burrs, and reed paths; the central support must be in a straight line from front to back, and must be smooth and free of burrs.

[0041] In some more specific embodiments, warp A has 4572 heads, warp B has 1120 heads, warp C has 1120 heads, the reed gauge is 13.5 teeth / cm, the reed width is 168.1cm, and the weave pattern is 1.2.4.3.1.6.2.3.4.1.2.7.3.1.4.2.3.8.1.3.4.2.1.7.3.2.4.1.3.6 2.1.4.3.2.5, a total of 36 threads per cycle; the reed threading method is 3 threads, the edge weave threading method is 9.10., 15 reed edges 3 threads threading the first warp, the outermost reed 4 threads threading, the stop warp threading method is 1.2.3.4.5.6., leaving waste edges, each leaving a heald; among them, 1.2.3.9.10. thread the first warp thread on the front axis, 4.5.6.7.8. thread the back axis, and 4. thread the second warp thread on the third warp thread, and 5.6.7.8 thread the third warp thread on the fourth warp thread.

[0042] S4 Weaving Process: Three warp yarns and two weft yarns are woven at a speed of 400 r / min. The back beam is set to 8 / 4 / 2 / 1 (spring 3), the warp stop frame is set to -2 / 0, the heald flattening time is 290 degrees, and the fabric tension is 4000 N, resulting in a composite multifunctional protective fabric. In this process, the heald frame heights from page 1 to page 10 are 120mm, 120mm, 120mm, 124mm, 124mm, 124mm, 124mm, 128mm, and 128mm respectively. The openings from page 1 to page 10 are 130mm, 120mm, 110mm, 100mm, 90mm, 80mm, 70mm, 60mm, 50mm, and 40mm respectively.

[0043] The specific operating procedures for this process include: ① Strictly controlling the removal of warp threads and oil stains to minimize downtime and prevent horizontal obstructions caused by stopping or unpacking. ② Requires timely patrols by the machine operator; cleaning is crucial. Immediately address any fly on the warp yarns to facilitate the timely handling of various yarn fuzz and fly, reducing adhesion and improving shed clarity. ③ Maintain cleanliness of the weft feeder and weft channel to reduce the accumulation of fly in these areas. ④ When warp breaks, the splice length should be controlled between 0.3 and 0.5 cm. Due to the high density of the reed, the knot must be tied in a tight knot. ⑤ When warp breaks or weft breaks occur at the edge support, promptly handle the yarn ends to prevent yarn from being carried into the edge support burr roller and affecting its smooth operation. ⑥ When warp breaks or weft breaks occur at the edge support, promptly handle the yarn ends to prevent yarn from being carried into the edge support burr roller and affecting its smooth operation. ⑦ Knotted yarn should be collected by designated personnel, used exclusively by designated machines, and clearly marked. Other yarns must not be mixed in, and knotted yarn must not be mixed with other products. ⑧ The operator must strictly control the reed path and ensure the reed is threaded correctly.

[0044] In some implementations, the weaving process is performed using a Picanol 2.5-meter rapier loom. In other implementations, the selected equipment can be adapted and adjusted according to actual needs, and no limitation is made here.

[0045] The performance of the composite multifunctional protective fabric of this invention is tested and analyzed through specific embodiments below. Where specific techniques or conditions are not specified in the embodiments, they were performed according to the techniques or conditions described in the literature in this field or according to the product instructions. Reagents or instruments used, unless otherwise specified, are all commercially available conventional products.

[0046] I. Preparation Method Example 1 The specific preparation steps of the composite multifunctional protective fabric prepared in this embodiment are as follows: (1) Winding process: Prepare three types of warp yarns and two types of weft yarns respectively; among them, warp yarn A is a 14.8tex×2 ply yarn with a weight ratio of 50% nylon, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, warp yarn B is a 14.8tex×2 ply yarn with a weight ratio of 50% nylon, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, warp yarn C is 400D aramid filament, weft yarn A is a 14.8tex×2 ply yarn with a weight ratio of 50% nylon, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, and weft yarn B is 200D aramid filament. The arrangement ratio of the three types of warp yarns is warp yarn A 2 / warp yarn C 1 / warp yarn A 2 / warp yarn B 1; the arrangement ratio of the two types of warp yarns in the composite multifunctional protective fabric is weft yarn A 1 / weft yarn B 1.

[0047] (2) Warping process: Warping is performed on the three types of warp yarns. The warping tension is configured with medium tension. The tension is configured in front, middle and back sections, and the edge tension is increased by 2 scales compared with the front section. The total number of warp yarns is 6812. Among them, warp yarn A has 4572 warp yarns, with 152 warp rows (front) and 30 warp beams; warp yarn B has 1120 warp yarns, with 112 warp rows (back) and 10 warp beams; warp yarn C has 1120 warp yarns, with 112 warp rows (back) and 10 warp beams. The machine speed is controlled at 400 meters / minute, and the winding air pressure is 2-2.5 bar.

[0048] (3) Reed threading process: Warp A has 4572 heads, warp B has 1120 heads, warp C has 1120 heads, reed size is 13.5 teeth / cm, reed width is 168.1cm, and the weave pattern is 1.2.4.3.1.6.2.3.4.1.2.7.3.1.4.2.3.8.1.3.4.2.1.7.3.2.4.1.3.6.2 1.4.3.2.5, a total of 36 threads per cycle; the reed threading method is 3 threads, the edge weave threading method is 9.10., 15 reed edges 3 threads thread the first warp, the outermost reed 4 threads, the stop warp threading method is 1.2.3.4.5.6., leave waste edges, each leave a heald; among them, 1.2.3.9.10. thread the first warp thread on the front axis, 4.5.6.7.8. thread the back axis, and 4. thread the second warp thread on the third warp thread, and 5.6.7.8. thread the third warp thread on the fourth warp thread on the fifth warp thread.

[0049] (4) Weaving process: The three warp yarns and two weft yarns are woven using a Picanol rapier 2.5-meter loom. The machine speed is 400r / min, the back beam is set to 8 / 4 / 2 / 1 (spring 3), the warp stop frame is set to -2 / 0, the heddle flattening time is 290 degrees, the fabric tension is 4000N, and the heddle frame heights from page 1 to page 10 are 120mm, 120mm, 120mm, 124mm, 124mm, 124mm, 124mm, 128mm, 128mm respectively. The openings from page 1 to page 10 are 130mm, 120mm, 110mm, 100mm, 90mm, 80mm, 70mm, 60mm, 50mm, 40mm respectively, to obtain a composite multifunctional protective fabric.

[0050] Comparative Example 1 Based on the preparation steps of Example 1, the only difference is that aramid 1414 in warp yarn A, warp yarn B, and weft yarn A is replaced with aramid 1313 (i.e., forming a "aramid / aramid 1313 / conductive fiber" ternary composite system), and the other steps are the same as in Example 1.

[0051] Comparative Example 2 Based on the preparation steps of Example 1, the only difference is that aramid 1313 in warp yarn A, warp yarn B, and weft yarn A is replaced with aramid 1414 (i.e., forming a "aramid / aramid 1414 / conductive fiber" ternary composite system), and the other steps are the same as in Example 1.

[0052] Comparative Example 3 Based on the preparation steps of Example 1, the only difference is that the conductive fiber components in warp yarn A, warp yarn B, and weft yarn A are removed (i.e., a "methylene / bisaramid" ternary composite system is formed), while the other steps are the same as in Example 1.

[0053] Comparative Example 4 The fabric used is a commercially available fireproof clothing material, whose raw material composition includes: 93% meta-aramid + 5% para-aramid + 2% antistatic fiber.

[0054] II. Testing Methods The samples prepared in Example 1 and Comparative Examples 1 to 4 were subjected to strength tests, corrosion resistance tests, flame retardancy tests, and antistatic tests.

[0055] Strength testing methods: The breaking strength test method refers to GB / T 3923.1-2013 "Textiles - Tensile Properties of Fabrics - Part 1: Determination of Breaking Strength and Elongation at Break (Strip Method)", and the breaking strength of the sample is determined; the tearing strength test method refers to GB / T 3917.3-2025 "Textiles - Tear Properties of Fabrics - Part 3: Determination of Tear Strength of Trapezoidal Specimens", and the tearing strength of the sample is determined; the bursting strength test method is B / T 19976-2005, with a steel ball diameter of 38mm and a bursting strength of ≥380N, and the bursting strength of the sample is determined.

[0056] 2) Corrosion resistance test method: Refer to GB / T 1766 immersion test method to determine the fracture strength retention rate of the sample after acid corrosion, 80% H2SO4 corrosion for 24h.

[0057] 3) Flame retardant test method: Refer to GB / T 17591-2025 "Flame Retardant Fabrics" to determine the flame retardant time and afterflame time of the sample.

[0058] 4) Antistatic test method: GB / T 37977.49-2023 "Electrostatics Part 4-9: Standard test methods for specific applications of clothing", determine the surface resistance of the sample.

[0059] III. Statistical Analysis of Test Results The strength test, corrosion resistance test, flame retardant test and antistatic test results of the samples prepared in Example 1 and Comparative Examples 1 to 4 were statistically analyzed, and the results are shown in Table 1.

[0060] Table 1 As can be seen from the data in Table 1: 1) Comparing Example 1 and Comparative Example 4, it can be seen that the composite multifunctional protective fabric prepared in Example 1 has obvious performance advantages over existing commercially available protective clothing. It is a durable, lightweight and reliable integrated multifunctional protective fabric system.

[0061] 2) Comparing Example 1 with Comparative Examples 1-3, it can be seen that when Comparative Example 1 uses only the "methylene / aramid 1313 / conductive fiber" ternary composite system, the overall strength of the composite multifunctional protective fabric is significantly reduced; when Comparative Example 1 uses only the "methylene / aramid 1414 / conductive fiber" ternary composite system, the flame-retardant effect of the composite multifunctional protective fabric is significantly weakened; and in Comparative Example 3, after removing the conductive fiber component, the antistatic ability of the composite multifunctional protective fabric is significantly weakened. It is evident that the replacement or adjustment of the proportion of any component in the "methylene / dual aramid / conductive fiber" quaternary composite system of this invention will significantly affect the comprehensive performance of the composite multifunctional protective fabric. Therefore, it is necessary to strictly control the proportion of nylon raw materials to obtain the multiple protective functions described in the embodiments of this invention.

[0062] It should be noted that all the above embodiments belong to the same inventive concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0063] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A composite multifunctional protective fabric, characterized in that, The composite multifunctional protective fabric consists of three warp yarns and two weft yarns. The three warp yarns include warp yarn A, warp yarn B, and warp yarn C, and the two weft yarns include weft yarn A and weft yarn B. The warp yarn A, warp yarn B, and weft yarn A are all composed of nylon, aramid 1313, aramid 1414 and conductive fibers, the warp yarn C is aramid 400D, and the weft yarn B is aramid 200D; The warp yarn A has a higher number than the warp yarn B, and the warp yarn A has the same number as the weft yarn A.

2. The composite multifunctional protective fabric according to claim 1, characterized in that, The warp yarn A, warp yarn B, and weft yarn A are all composed of 50% aramid fiber, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber by weight.

3. The composite multifunctional protective fabric according to claim 1, characterized in that, The warp yarn A is a 14.8tex×2 ply yarn, the warp yarn B is an 11.8tex×2 ply yarn, the warp yarn C is a 400D aramid filament, the weft yarn A is a 14.8tex×2 ply yarn, and the weft yarn B is a 200D filament.

4. The composite multifunctional protective fabric according to claim 1, characterized in that, The arrangement ratio of the three warp yarns in the composite multifunctional protective fabric is warp yarn A 2 / warp yarn C 1 / warp yarn A 2 / warp yarn B 1; The arrangement ratio of the two warp yarns in the composite multifunctional protective fabric is 1 / 10.

5. The composite multifunctional protective fabric according to claim 1, characterized in that, The composite multifunctional protective fabric has a warp density of 426 threads / 10cm and a weft density of 366 threads / 10cm.

6. The composite multifunctional protective fabric according to claim 1, characterized in that, The fabric width of the composite multifunctional protective fabric is 160~161cm.

7. A method for preparing a composite multifunctional protective fabric as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1 Winding Process: Prepare three types of warp yarns and two types of weft yarns respectively; wherein, warp yarn A is a 14.8tex×2 ply yarn with a weight percentage of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, warp yarn B is a 14.8tex×2 ply yarn with a weight percentage of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, warp yarn C is an aramid 400D filament, weft yarn A is a 14.8tex×2 ply yarn with a weight percentage of 50% aramid, 38% aramid 1313, 10% aramid 1414 and 2% conductive fiber, and weft yarn B is an aramid 200D filament; S2 Warping process: Warping of the three types of warp yarns, with a total of 6812 heads, and the machine speed is controlled at a constant speed of 400-420 m / min; S3 reed threading process: The reed threading method for the ground weave is 3-in, and the reed threading method for the edge weave is the forward threading method, with 15 reed teeth on one side for threading the edge, 3-in per reed threading the warp yarn, and 4-in for the outermost reed; the stop warp threading method is 1, 2, 3, 4, 5, 6 forward threading; 10 heddle frames are used; the heddle threading method for the ground weave is 1, 2, 4, 3, 1, 6, 2, 3, 4, 1, 2, 7, 3, 1, 4, 2, 3, 8, 1, 3, 4, 2, 1, 7, 3, 2, 4, 1, 3, 6, 2, 1, 4, 3, 2, 5, for a total of 36 threads per cycle; S4 Weaving process: The three warp yarns and two weft yarns are woven at a speed of 400 r / min, the back beam is set to 8 / 4 / 2 / 1 (spring 3), the warp stop frame is set to -2 / 0, the heddle flattening time is 290 degrees, and the fabric tension is 4000N, to obtain the composite multifunctional protective fabric.

8. The method for preparing the composite multifunctional protective fabric according to claim 7, characterized in that, In the S2 warping process, the warping tension is configured with medium tension, and the tension is configured in a front, middle and back segment method, with the edge tension being 2 scales higher than that of the front area. The total number of warp ends for the three types of warp yarns is 6812. Among them, warp yarn A has 4572 ends, with 152 rows of warp ends (front) and 30 warp beams; warp yarn B has 1120 ends, with 112 rows of warp ends (back) and 10 warp beams; and warp yarn C has 1120 ends, with 112 rows of warp ends (back) and 10 warp beams. The vehicle speed is controlled at 400 meters per minute, and the winding air pressure is 2-2.5 bar.

9. The method for preparing the composite multifunctional protective fabric according to claim 7, characterized in that, In the S3 reed threading process, the number of warp yarns A is 4572, the number of warp yarns B is 1120, the number of warp yarns C is 1120, the reed number is 13.5 teeth / cm, the reed width is 168.1cm, and the ground weave threading method is 1.2.4.3.1.6.2.3.4.1.2.7.3.1.4.2.3.8.1.3.4.2.1.7.3.2.4.1.3.6.2.1.4.3.2.5, for a total of 36 yarns per cycle; the reed threading method is 3-in-3, the edge weave threading method is 9.10, 15 reed edges are threaded with 3-in-3 into warp A, the outermost reed is threaded with 4-in-4, the stop warp threading method is 1.2.3.4.5.6, waste edges are reserved, and each retains a heald; Among them, 1, 2, 3, 9, 10 are warp yarns A on the front axis, 4, 5, 6, 7, 8 are warp yarns B on the back axis, and 4 is warp yarn C on the front axis, and 5, 6, 7, 8 are warp yarn B on the back axis.

10. The method for preparing the composite multifunctional protective fabric according to claim 7, characterized in that, In the S4 weaving process, the height of the heald frame from page 1 to page 10 is 120mm, 120mm, 120mm, 124mm, 124mm, 124mm, 124mm, 128mm, 128mm respectively; the opening from page 1 to page 10 is 130mm, 120mm, 110mm, 100mm, 90mm, 80mm, 70mm, 60mm, 50mm, 40mm respectively.

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