Inorganic fiber composite yarn mixed fabric, processing method and application thereof

Abstract

This invention provides an inorganic fiber composite yarn blended fabric, its processing method, and its application. It utilizes core-spun composite yarn prepared by coaxial spinning and vortex spinning processes as the weft yarn, and cross-wound composite yarn prepared by friction spinning and hollow spindle wrapping techniques as the warp yarn. The fabric is then woven using a machine weaving process to obtain the inorganic fiber composite yarn blended fabric. This invention solves the technical problems of poor durability, easy bending and core leakage, and numerous burrs in inorganic fiber composite yarns and fabrics. The processing method of this invention has high production efficiency, and the prepared inorganic fiber composite yarn blended fabric is burr-free, more durable, and suitable for the manufacture of high-quality and functional textiles.

Description

Technical Field

[0001] This invention relates to the field of textile technology, and in particular to an inorganic fiber composite yarn blended fabric, its processing method, and its application. Background Technology

[0002] Inorganic fibers include basalt fiber, alumina fiber, carbon fiber, inorganic alkali-resistant glass fiber, quartz fiber, and ceramic fiber, all sharing common characteristics such as high temperature resistance and corrosion resistance. Basalt, formed from cooled volcanic magma, is a naturally occurring and relatively abundant raw material. However, basalt fiber production is challenging, involving numerous steps including raw material preparation, melting, and fiber drawing. Basalt fiber, an inorganic material, possesses excellent properties such as lightweight, high strength, high temperature resistance, corrosion resistance, oxidation resistance, impact resistance, radiation protection, heat and sound insulation, non-magnetism, and wave transmission. However, basalt fiber is also rigid, brittle, and has low elongation at break and low elasticity. Yarns and fabrics made from it tend to be stiff, have many burrs, and cause significant itching. Furthermore, basalt fibers are prone to breakage and loss during bending, friction, and rubbing, exhibiting low stability. Basalt fiber is particularly brittle and has poor abrasion resistance, making it prone to breakage during yarn spinning and burr formation during subsequent processing and weaving. This significantly reduces weaving efficiency and the wearability of the finished fabric products. Therefore, achieving the desired heat insulation, fire resistance, flexibility, abrasion resistance, and skin-friendly comfort in basalt fiber yarn and fabric products simultaneously and efficiently is not only an urgent market demand but also a technically challenging task.

[0003] Patent CN104191737B discloses a method for preparing a special composite fabric based on flame-retardant basalt fiber. The method involves weaving basalt fiber into a plain or twill weave fabric, which is then combined with other fabrics using an organic adhesive. This invention solves the problem of basalt fiber irritating the skin and making it unwearable, achieving flame retardancy, heat insulation, wear resistance, and radiation protection. However, the special composite fabric prepared by this invention only uses an organic adhesive for coating, which can lead to the basalt fiber easily slipping off. Furthermore, the processing stability of the special composite fabric is extremely poor, resulting in low production efficiency and limited applications. Patent CN102154753A discloses a basalt core-spun yarn, which directly core-spun basalt fiber into yarn. However, because the basalt fiber can still break inside the yarn during subsequent fabric use, there is still a risk of it detaching and spreading to the yarn or fabric surface.

[0004] Therefore, to completely overcome the risks of basalt fiber breakage and exposure after repeated bending of basalt fiber core-spun composite yarn and its fabric, as well as the problems of poor stability, low uniformity and strength, and to fully and efficiently achieve the heat insulation, fireproof, flexibility, wear resistance and skin-friendly comfort properties of basalt fiber composite yarn and its fabric, it is necessary to carry out systematic collaborative innovation in processes such as basalt fiber filament treatment, filament core-spun composite spinning and twisting, and mixed weaving.

[0005] In view of this, it is necessary to create a new processing method that is universally applicable to the blending of high-stiffness brittle inorganic fiber composite yarns into fabrics in order to solve the above problems. Summary of the Invention

[0006] In view of the shortcomings of the prior art, the purpose of this invention is to provide an inorganic fiber composite yarn blended fabric with good uniformity, strength and softness and strong processing stability, as well as its processing method and application.

[0007] To achieve the above objectives, the present invention provides a method for processing inorganic fiber composite yarn blended fabric, comprising the following steps:

[0008] Step 1: Twist the inorganic fiber multifilament to obtain inorganic fiber initial twisted yarn. Use the inorganic fiber initial twisted yarn as the core yarn of coaxial spinning and place it on the inner shaft of the coaxial needle of the wet spinning equipment. Place the organic spinning solution on the outer shaft of the coaxial needle. The inorganic fiber initial twisted yarn passes through the inner shaft of the coaxial needle and is pulled out by the winding device. The organic spinning solution is extruded through the outer shaft of the coaxial spinning needle and solidified in the coagulation bath to form an inorganic-organic composite initial spun covered yarn.

[0009] Step 2: After the short fibers are combed through the carding process, they are bundled through the trumpet mouth to obtain the raw sliver; the raw sliver is then drawn through two drawing processes to obtain the finished sliver. The initial spun covered yarn prepared in Step 1 is used as the core yarn, and the finished sliver is used as the outer covering fiber. The vortex spinning process is used to prepare the vortex core-spun composite yarn.

[0010] Step 3: Twist the eddy current core-spun composite yarn prepared in Step 2 using a twisting machine to obtain ply yarn A;

[0011] Step 4: Feed the high-rigidity and brittle inorganic fiber filaments and the flexible and wear-resistant organic filaments alternately and parallel into the front nip of the ring spinning machine, and twist them in the forward direction to obtain the inorganic-organic composite twisted initial twisted composite yarn.

[0012] Step 5: The initial twisted composite yarn obtained in Step 4 is fed into the friction spinning wedge zone composed of a pair of friction rollers under constant tension. At the same time, the outer short fiber sliver enters the friction spinning roller drafting mechanism through the feed roller nip composed of the feed roller and the feed rubber roller. Under the action of the suction force and rotational friction force of the friction roller, the outer short fiber sliver is condensed and orderly wrapped around the outer layer of the initial twisted composite yarn to form a friction core-spun composite yarn with a core-sheath structure.

[0013] Step 6: The friction core-spun composite yarn with the core-sheath structure described in Step 5 is output from the front roller through the drafting device and passes through the upper and lower hollow spindles respectively. The rotation of the upper and lower hollow spindles causes the wrapped filaments wound on the hollow spindles to unwind, thereby covering the wrapped filaments with the core-sheath structure of the friction core-spun composite yarn in Step 5. By wrapping in the forward and reverse directions in sequence, a cross-wound composite yarn is obtained. The cross-wound composite yarn is wound onto a parallel bobbin to form a parallel bobbin package.

[0014] Step 7: The doubling bobbin winding device obtained in step 6 is used on a ring spinning machine for reverse twisting to obtain ply B;

[0015] Step 8: Using a weaving process, the ply yarn B prepared in step 7 is used as the warp yarn and the ply yarn A prepared in step 3 is used as the weft yarn to weave and obtain an inorganic fiber composite yarn blended fabric.

[0016] As a further improvement of the present invention, in step 1, the inorganic fiber multifilament is composed of 10 to 300 inorganic fibers, the diameter of a single inorganic fiber is 7 to 11 μm, and the twist is 20 to 50 twists / 10cm; the inorganic fiber is one of basalt fiber, alumina fiber, carbon fiber, inorganic alkali-resistant glass fiber, quartz fiber, and ceramic fiber; the inorganic fiber accounts for 30 to 70% of the mass of the initial spun covered yarn.

[0017] Furthermore, the preparation method of the organic spinning solution is as follows: the polymer is added to the solvent and stirred at a speed of 100-1000 rpm for 1-30 hours to prepare the spinning solution; the polymer is one or more of cellulose acetate, polyurethane, polyacrylic acid, polyvinylidene fluoride, polyacrylonitrile, polymethacrylic acid, polyacrylaldehyde, polyacrylamide, polyimide, hydroxyl polyacrylate, polyacrylate butadiene nitrile, polystyrene, and polytetrafluoroethylene; the solvent is one or two of N,N-dimethylacetamide and tetrahydrofuran; the mass of the polymer in the organic spinning solution is 7-30 wt%; and the coagulation bath is water.

[0018] As a further improvement of the present invention, in step 2, the short fiber is one or more of cotton fiber, seaweed fiber, flame-retardant aramid fiber, flame-retardant viscose fiber, flame-retardant acrylic fiber, flame-retardant polyester fiber, and flame-retardant nylon fiber, and the sliver weight is 15-20 g / 5m; in the vortex spinning process, the feed ratio is controlled at 0.85-0.98, the draft ratio is 210-230, the nozzle air pressure is controlled at 0.4-0.6 MPa, and the nozzle outlet pressure is 0.2-0.3 MPa; in the prepared vortex core-spun composite yarn, the initial spun covering yarn accounts for 20-60% of the mass of the vortex core-spun composite yarn; and the count of the vortex core-spun composite yarn is 10-30s.

[0019] As a further improvement of the present invention, in step 3, the twisting machine used for twisting has a speed of 20 to 50 r / min, a twist direction of Z twist, and a twist degree of 10 to 40 twists / 10cm.

[0020] As a further improvement of the present invention, in step 4, the high-rigidity brittle inorganic fiber filament is one or more of basalt filament, carbon fiber filament, glass fiber filament, and boron fiber filament; the flexible and wear-resistant organic filament is one or more of ultra-high molecular weight polyethylene filament, aramid filament, polyester filament, and nylon filament; the twist of the flexible and wear-resistant organic filament and the high-rigidity brittle inorganic fiber filament is 10 to 40 twists / 10cm, and the forward twist direction is Z twist.

[0021] As a further improvement of the present invention, in step 5, the outer short fiber strip is one or more of polyimide fiber, aramid 1414 fiber, flame-retardant blended fiber and aramid sulfone fiber; the relevant parameters of friction spinning are: combing roller speed of 3800 r / min; friction roller speed of 3500 r / min; feeding speed of 0.5 m / min; output speed of 10.0 m / min; and winding speed of 12 m / min.

[0022] As a further improvement of the present invention, in step 6, the filament wrapped in the hollow spindle is one or more of aramid filament, ultra-high molecular weight polyethylene filament, and polyester filament; the rotation speed of the upper hollow spindle is 2000 r / min, the rotation speed of the lower hollow spindle is 4000 r / min, and the output roller speed is 5 m / min.

[0023] As a further improvement of the present invention, in step 8, the warp density of the inorganic fiber composite yarn blended fabric is 100-140 threads / 10cm, and the weft density is 120-160 threads / 10cm.

[0024] The present invention also provides an inorganic fiber composite yarn blended fabric, which is obtained by the above-mentioned inorganic fiber composite yarn blended fabric processing method.

[0025] The inorganic fiber composite yarn blended fabric is used for tents, bed sheets, sofa covers, fire suits, fire blankets, fire extinguishing blankets, and fireproof curtains.

[0026] The beneficial effects of this invention are:

[0027] (1) The inorganic fiber composite yarn blended fabric, its processing method, and its application provided by this invention involve preparing weft yarns using coaxial spinning and vortex spinning processes, preparing warp yarns using friction spinning and hollow spindle wrapping techniques, and then weaving the fabric using machine weaving processes to obtain the inorganic fiber composite yarn blended fabric. The processing method of this invention has high production efficiency, and the prepared inorganic fiber composite yarn blended fabric has superior performance, making it suitable for the manufacture of high-quality and functional textiles.

[0028] (2) The inorganic fiber composite yarn blended fabric prepared by this invention has a core-spun weft yarn with uniform evenness. The initial twisted covered yarn is prepared by coaxial spinning technology. The flow rates of the core yarn and spinning solution can be controlled separately to achieve precise control of the fiber diameter, thereby obtaining a more uniform initial twisted covered yarn. Due to the high rigidity of the high-stiffness brittle inorganic fiber, it is difficult to effectively cover the inorganic fiber by ordinary processing methods. The coaxial spinning technology has a better covering effect on the inorganic fiber, with no leakage of yarn. Furthermore, since the coaxial spinning technology can achieve fiber stretching, the organic spinning solution will be stretched by traction force during extrusion. The organic spinning solution can obtain initial twisted covered yarn with corresponding characteristics by using functional materials. This completely solves the problems of risk of breakage and exposure of the internal basalt and other inorganic fibers after multiple bending of the core-spun composite yarn and its fabric, poor stability, low uniformity and strength. It enhances the processability of high-stiffness brittle inorganic fibers in yarn and fabric and expands the application range.

[0029] (3) The use of vortex spinning to prepare inorganic fiber core-spun composite yarn allows for more uniform fiber distribution during the coating process, resulting in denser and more elastic yarns and fabrics during processing, thereby improving fiber strength and durability. Vortex spinning enables continuous production with high efficiency, making it suitable for large-scale production.

[0030] In the vortex spinning process, organic fibers are uniformly mixed by the vortex, resulting in a core-spun composite yarn with good evenness, in which organic fibers wrap inorganic fibers. Furthermore, the inorganic fibers in the core are subjected to stretching and compression, making the arrangement of inorganic fibers more orderly, improving fiber strength, and obtaining a stable core-spun composite yarn.

[0031] The structure of core-spun yarn is prepared by vortex spinning of composite yarn of inorganic fibers such as basalt as core yarn and organic short fibers as outer fibers. Due to the softness, high strength, flame retardancy and wear resistance of short fibers, combined with the high temperature fire resistance of inorganic fibers such as basalt, the hairiness and evenness of core-spun yarn are optimized and the quality and processability of inorganic fiber fabrics are improved through reasonable design of structure and composition.

[0032] (4) By employing a twisting and combining process for yarn processing, the composite yarn can be made more compact, strong, and soft, thereby improving the stability and durability of the yarn, reducing problems such as yarn breakage, pilling, and fuzzing, and improving the strength and abrasion resistance of the composite single yarn. The appropriate amount of twisting in this invention can make the yarn softer, making it more suitable for use in clothing and other close-fitting garments.

[0033] (5) By combining friction spinning and hollow spindle wrapping technology, the spun yarn has a good effect of multi-level wrapping of inorganic fiber core yarn, while reducing the hairy defects of friction composite core-spun yarn and improving the wear resistance of basalt and other inorganic fiber composite yarn blended fabrics.

[0034] The warp yarn prepared by this invention is produced by ring spinning, which involves combining and twisting a wear-resistant organic filament with a high-rigidity brittle inorganic fiber filament. This enhances the strength and wear resistance of the high-rigidity brittle inorganic fiber yarn while preserving the properties of the inorganic fiber filament, and also improves the spinnability for subsequent processing. Through hollow spindle spinning technology, the outer organic filament yarn can be uniformly and untwistedly wrapped around the outer layer of the yarn by utilizing the rotation of the twister. Furthermore, by rotating the upper and lower hollow spindles in different twist directions, cross-wound yarn can be produced, thereby improving the wear resistance and durability of the yarn. Compared with the short fiber core-spun yarn spun by friction spinning, the spun cross-wound yarn has significantly less hairiness and increased evenness, eliminating the defects of excessive hairiness and poor evenness in friction-spun yarn.

[0035] (6) This invention can be mass-produced using traditional simple ring spinning, friction spinning and hollow spindle spinning technologies. By covering short fibers and wrapping flexible filaments, it improves the defects of high-rigidity and brittle inorganic fiber filaments, such as easy breakage and burrs in weaving, and the inability of pure friction spinning to improve yarn strength and wear resistance.

[0036] (7) The processing method of the present invention has high production efficiency. It adopts coaxial spinning technology and vortex spinning process to achieve continuous production and has high production efficiency. Moreover, the twisting process equipment can achieve automated production and the whole process works together to improve the efficiency of the entire production process.

[0037] (8) The inorganic fiber composite yarn blended fabric prepared by the present invention is of better quality. The optimization in the preparation of the initial twisted covered yarn and the processing of the core-spun yarn makes the inorganic fiber composite yarn blended fabric have better uniformity, strength and softness, and is more suitable for the manufacture of high-quality and functional textiles, such as high-end clothing and home furnishings, outdoor products, fire protection products, etc. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of a coaxial spinning device.

[0039] Figure 2 This is a schematic diagram of a vortex spinning core-spun device.

[0040] Figure 3 This diagram illustrates the twisting of high-rigidity, brittle inorganic fiber filaments pretreated by ring spinning with flexible, wear-resistant organic filaments.

[0041] Figure 4 A schematic diagram of an apparatus for coating short friction-spun fibers with untwisted composite yarns.

[0042] Figure 5 This is a schematic diagram of the yarn wrapping device in hollow spindle spinning technology.

[0043] Figure 6 This is a flowchart for preparing inorganic fiber composite yarn blended fabric.

[0044] Figure 7 This is a photograph of the warp yarn prepared in Example 1.

[0045] Figure 8 This is a photograph of the inorganic fiber composite yarn blended fabric prepared in Example 1.

[0046] Figure Labels

[0047] 1-Extrusion bar; 2-Organic spinning solution; 3-Core yarn tube; 4-Nozzle; 5-Coagulation bath; 6-First guide roller; 7-Second guide roller; 8-Wrapping roller; 9-Filament bobbin; 10-Roving bobbin; 11-Flagging end; 12-Back roller; 13-Middle back roller; 14-Middle front roller; 15-Front roller; 16-Vortex chamber; 17-Lead roller; 18-Electronic yarn clearer; 19-Bobbin; 20-First fixed yarn guide device; 21-Second fixed yarn guide device; 22-Front roller; 23-Front skin roller; 24-Yarn guide hook; 25-Bobbin tube Support frame; 26-Steel wire traveler; 27-Steel ring; 28-Groove cylinder; 29-Yarn guide hole; 30-Yarn guide traverse device; 31-Card roller; 32-Roller drafting mechanism; 33-First yarn guide roller; 34-Second yarn guide roller; 35-Friction roller; 36-Tensioner; 37-Yarn guide hole; 38-Initial twist composite yarn; 39-Friction spinning support frame; 40-Front roller; 41-Front roller; 42-Upper hollow spindle; 43-Twisting device; 44-Lower hollow spindle; 45-Output roller; 46-Yarn guide traverse device; 47-Yarn guide hole; 48-Cone yarn. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0049] It should also be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0050] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0051] This invention provides a method for processing inorganic fiber composite yarn blended fabric, comprising the following steps:

[0052] Step 1: Twist the inorganic fiber multifilament to obtain inorganic fiber pre-twisted yarn. Use the inorganic fiber pre-twisted yarn as the core yarn for coaxial spinning, placing it on the inner shaft of the coaxial needle in a wet spinning device. The organic spinning solution 2 is placed on the outer shaft of the coaxial needle. The inorganic fiber pre-twisted yarn passes through the inner shaft of the coaxial needle and is drawn out by a winding device. The organic spinning solution 2 is extruded through the outer shaft of the coaxial spinning needle and solidified in the coagulation bath 5 to form an inorganic-organic composite pre-spun covered yarn. A schematic diagram of the coaxial spinning device is shown below. Figure 1 As shown.

[0053] Specifically, 10 to 300 inorganic fibers are twisted to obtain inorganic fiber filaments, wherein the diameter of a single inorganic fiber is 7 to 11 μm and the twist is 20 to 50 twists / 10 cm. The inorganic fiber filaments are placed on the core yarn tube 3 of the coaxial spinning machine as the core yarn, and placed on the inner shaft of the coaxial needle of the wet spinning equipment. The organic spinning solution 2 is placed on the outer shaft of the coaxial needle. The inorganic fiber filaments are drawn out by the winding roller 8 through the first guide roller 6 and the second guide roller 7. The spinning solution 2 is extruded from the outer shaft nozzle 4 of the coaxial spinning needle through the extrusion rod 1 of the wet spinning equipment and solidified in the coagulation bath 5 to form an inorganic-organic composite filament. The coagulation bath 5 is water. The inorganic fibers account for 30 to 70% of the mass of the filament.

[0054] The preparation method of organic spinning solution 2 is as follows: the polymer is added to the solvent and stirred at a speed of 100-1000 rpm for 1-30 hours to prepare organic spinning solution 2.

[0055] The polymer is preferably one or more of cellulose acetate, polyurethane, polyacrylic acid, polyvinylidene fluoride, polyacrylonitrile, polymethacrylic acid, polyacrylaldehyde, polyacrylamide, polyimide, hydroxyl polyacrylate, polyacrylate butadiene nitrile, polystyrene, and polytetrafluoroethylene.

[0056] More preferably, the polymer is polyurethane.

[0057] The solvent is preferably one or two of N,N-dimethylacetamide and tetrahydrofuran.

[0058] More preferably, the solvent is prepared by mixing N,N-dimethylacetamide and tetrahydrofuran in a mass ratio of (1-5):1.

[0059] The polymer in organic spinning solution 2 is preferably 7-30 wt%.

[0060] Step 2: After the short fibers are carded, they are bundled through the trumpet 11 to obtain a raw sliver. The raw sliver is then drawn twice to obtain a finished sliver. The initial spun covered yarn prepared in Step 1 is used as the core yarn, and the finished sliver is used as the outer covering fiber. A vortex spinning process is then used to prepare a vortex core-spun composite yarn. A schematic diagram of the vortex spinning core-spun device is shown below. Figure 2 As shown.

[0061] Specifically, after the short fibers are carded, they are bundled through the trumpet 11 to obtain a sliver. The short fibers are preferably one or more of cotton fiber, seaweed fiber, flame-retardant aramid fiber, flame-retardant viscose fiber, flame-retardant acrylic fiber, flame-retardant polyester fiber, and flame-retardant nylon fiber. The sliver is then drawn twice to obtain a finished sliver with a basis weight of 15-20 g / 5m. The initial spun covered yarn prepared in step 1 is then placed on the filament bobbin 9 as the core yarn, and the finished sliver is used as the outer covering fiber. The outer covering fiber is placed on the roving bobbin 10, unwound from the roving bobbin 10, passes through the bell mouth 11, and is drafted by a four-roller drafting mechanism consisting of a back roller 12, a middle back roller 13, a middle front roller 14, and a front roller 15. The initial spun covering filament is then unwound from the filament bobbin 9 and fed into the front roller 15. Finally, together with the drafted roving, it passes through the vortex chamber 16 to form a core-spun yarn, which is then wound onto the yarn bobbin 19 via the lead-out roller 17 and an electronic yarn clearer 18. In the vortex spinning process, the feed ratio is controlled at 0.85–0.98, the draft ratio at 210–230, the nozzle air pressure at 0.4–0.6 MPa, and the nozzle lead-out pressure at 0.2–0.3 MPa. The initial spun covering filament accounts for 20–60% of the mass of the prepared vortex core-spun composite yarn. The yarn count is 10–30s.

[0062] More preferably, the short fiber is prepared by mixing cotton fiber and flame-retardant aramid fiber in a mass ratio of 1:(0.5-3).

[0063] Step 3: Twist the eddy core-spun composite yarn prepared in Step 2 using a twisting machine to obtain ply yarn A.

[0064] Specifically, the eddy current core-spun composite yarn prepared in step 2 is twisted using a twisting machine. The twisting machine speed is 20-50 r / min, the twist direction is Z twist, and the twist degree is 10-40 twists / 10cm to obtain strand A.

[0065] Step 4: Feed the high-stiffness, brittle inorganic fiber filaments and the flexible, abrasion-resistant organic filaments alternately and parallel into the front nip of the ring spinning machine, and twist them in the forward direction to obtain the initial twisted composite yarn of inorganic and organic composite. A schematic diagram of the twisting process between the high-stiffness, brittle inorganic fiber filaments and the flexible, abrasion-resistant organic filaments in the ring spinning pretreatment is shown below. Figure 3 As shown.

[0066] Specifically, at least one flexible and wear-resistant organic filament unwound from a flexible and wear-resistant organic filament package is output from the front nip of the ring spinning machine, which is composed of the front roller 22 and the front slip roller 23, through the first fixed guide device 20. Meanwhile, a high-rigidity and brittle inorganic fiber filament unwound from another bobbin package is fed into the front nip of the ring spinning machine, which is composed of the front roller 22 and the front slip roller 23, through the second fixed guide device 21. The flexible and wear-resistant organic filament and the high-rigidity and brittle inorganic fiber filament are then twisted into yarn through the speed difference between the rotation of the wire ring 26 on the ring 27 and the yarn tube on the bobbin support frame 25 via the guide hook 24. The flexible and wear-resistant organic filaments output from the front jaws are forward twisted with the high-rigidity and brittle inorganic fiber filaments to form an inorganic-organic composite twisted initial twisted composite filament, which is then wound into a bobbin for later use.

[0067] The high-rigidity brittle inorganic fiber filament is one or more of basalt filament, carbon fiber filament, glass fiber filament, and boron fiber filament; the flexible and wear-resistant organic filament is one or more of ultra-high molecular weight polyethylene filament, aramid filament, polyester filament, and nylon filament; the twist of the flexible and wear-resistant organic filament and the high-rigidity brittle inorganic fiber filament is 10 to 40 twists / 10cm, and the forward twist direction is Z twist.

[0068] Step 5: The untwisted composite yarn obtained in Step 4 is fed into the friction spinning wedge zone composed of a pair of friction rollers 35 under constant tension. Simultaneously, the outer short fiber sliver enters the friction spinning roller drafting mechanism via the feed roller nip consisting of the feed roller and the feed rubber roller. Under the action of the suction force and rotational friction of the friction rollers 35, the outer short fiber sliver agglomerates and orderly coats the outer layer of the untwisted composite yarn, forming a core-sheath structure friction-spun core-wrapped composite yarn. A schematic diagram of the device for coating the untwisted composite yarn with friction-spun short fibers is shown below. Figure 4 As shown.

[0069] Specifically, the initial twisted composite yarn spool obtained in step 4 is placed on the friction spinning support frame 39. At least one initial twisted composite yarn 38, unwound from the initial twisted composite yarn spool, is led out through the yarn guide hole 37 and, under the control of the tensioner 36, enters the wedge-shaped area of ​​the friction spinning machine composed of a pair of friction rollers 35 with a constant tension. At the same time, the outer short fiber sliver enters the roller drafting mechanism 32 of the friction spinning machine through the feed roller nip composed of the feed roller and the feed rubber roller. The short fiber sliver after being drafted by the roller drafting mechanism enters the carding system of the friction spinning machine. Under the action of the combing roller 31, the fiber sliver is combed into fiber sliver. The fiber sliver is fed into the wedge-shaped area of ​​the friction spinning machine formed by a pair of friction rollers 35 through the fiber feeding channel, where it merges with the initial twisted composite yarn. Under the action of the suction and rotational friction of the friction rollers 35, the fiber sliver is condensed and orderly wrapped around the outer layer of the initial twisted composite yarn, forming a core-sheath structure friction core-wrapped composite yarn. The composite yarn is continuously drawn out through the yarn guide hole 29 of the friction spinning machine, the yarn guide traverse device 30, and the grooved drum 28, and finally wound onto the bobbin to form a yarn package.

[0070] The outer short fiber strip is one or more of polyimide fiber, aramid 1414 fiber, flame-retardant blended fiber, and aramid fiber.

[0071] The relevant parameters of the friction spinning machine are: carding roller speed 3800 r / min; friction roller speed 3500 r / min; feed speed 0.5 m / min; output speed 10.0 m / min; take-up speed 12 m / min.

[0072] Step 6: The friction core-spun composite yarn with the core-sheath structure described in Step 5 is output from the front roller via the drafting device and passes through the upper and lower hollow spindles respectively. The rotation of the upper and lower hollow spindles causes the wrapped filaments wound on the hollow spindles to unwind, thus wrapping the wrapped filaments around the friction core-spun composite yarn with the core-sheath structure from Step 5. This process is repeated in both forward and reverse directions to obtain a cross-wound composite yarn. The cross-wound composite yarn is then wound onto a doubling bobbin to form a doubling bobbin package. A schematic diagram of the yarn wrapping device in hollow spindle spinning technology is shown below. Figure 5 As shown.

[0073] Specifically, the friction core-spun composite yarn with the core-sheath structure described in step 5 is output from the front roller 41 via the drafting device and passes through the upper hollow spindle 42 and the lower hollow spindle 44 respectively. The rotation of the upper and lower hollow spindles causes the wrapped filaments wound on the hollow spindles to unwind, thereby covering the wrapped filaments with the friction core-spun composite yarn with the core-sheath structure in step 5.

[0074] The wrapped filament is unwound from the wrapped filament tube surrounding the upper hollow spindle 42. The friction-wrapped composite yarn of the wrapped filament and the core-sheath structure passes parallel to the upper hollow spindle 42 and enters the rotating twister 43. The twist direction is forward twisting, so that the wrapped filament and the core-sheath composite yarn are wrapped together to form a wrapped composite yarn. Further, the wrapped filament is unwound from the wrapped filament tube surrounding the lower hollow spindle 44. At the same time, the wrapped filament and the wrapped composite yarn pass parallel to the lower hollow spindle 44 and are twisted in the reverse direction to form a cross-wrapped composite yarn. The cross-wrapped composite yarn is output through the output roller 45 and wound onto the bobbin through the yarn guiding device 46 and the yarn guiding hole 47 to form a bobbin 48.

[0075] The filaments wrapped in the hollow spindle are one or more of aramid filaments, ultra-high molecular weight polyethylene filaments, and polyester filaments. The upper hollow spindle 42 rotates at 2000 r / min, the lower hollow spindle 44 rotates at 4000 r / min, and the output roller 45 has a speed of 5 m / min.

[0076] Step 7: The doubling bobbin winding device obtained in step 6 is used on a ring spinning machine for reverse twisting to obtain ply yarn B.

[0077] Specifically, a cross-wound composite yarn unwound from a package of cross-wound composite yarns is output from the front nip of the ring spinning machine via a first fixed guide device 20, consisting of the front roller 22 and the front slip roller 23. Another cross-wound composite yarn unwound from a package of cross-wound composite yarns is fed into the front nip of the ring spinning machine via a second fixed guide device 21, parallel to the first cross-wound basalt composite yarn. The two cross-wound composite yarns are then twisted into yarn via a guide hook 24, using the speed difference between the rotation of the wire ring 26 on the ring 27 and the yarn tube on the bobbin support 25. The twisting is performed in reverse, forming untwisted strands, which are then wound onto bobbins for subsequent weaving.

[0078] Step 8: Using a weaving process, the ply yarn B prepared in step 7 is used as the warp yarn and the ply yarn A prepared in step 3 is used as the weft yarn to weave and obtain an inorganic fiber composite yarn blended fabric.

[0079] The flowchart for preparing inorganic fiber composite yarn blended fabric is as follows: Figure 6 As shown.

[0080] The inorganic fiber composite yarn blended fabric has a warp density of 100-140 threads / 10cm and a weft density of 120-160 threads / 10cm.

[0081] The processing method of the inorganic fiber composite yarn blended fabric provided by the present invention will be described below with reference to specific embodiments.

[0082] Example 1

[0083] Example 1 provides a processing method for inorganic fiber composite yarn blended fabric, the steps of which are as follows:

[0084] Step 1: The basalt fiber multifilament is twisted using a twisting machine. The basalt fiber multifilament consists of 100 basalt fibers, each with a diameter of 8μm. The twisting degree is 30 twists / 10cm to obtain basalt yarn. The basalt yarn is placed on the core yarn tube 3 of the coaxial spinning machine as the core yarn and placed on the inner shaft of the coaxial needle. The organic spinning solution 2 is placed on the outer shaft of the coaxial needle. The basalt yarn passes through the inner shaft of the coaxial needle and is pulled out by the winding roller 8 through the first guide roller 6 and the second guide roller 7. The organic spinning solution 2 is extruded from the nozzle 4 of the coaxial spinning needle through the extrusion rod 1 of the wet spinning equipment and solidified in the coagulation bath 5 to form the initial spun covered yarn. The coagulation bath 5 is water. The basalt yarn accounts for 40% of the mass of the initial spun covered yarn.

[0085] The organic spinning solution 2 is prepared as follows: polyurethane is added to a solvent prepared by N,N-dimethylacetamide and tetrahydrofuran at a mass ratio of 3:1, and stirred in a magnetic stirrer at a speed of 300 rpm for 24 hours to prepare organic spinning solution 2. The mass of polyurethane in the spinning solution is 9 wt%.

[0086] Step 2: Cotton fiber and flame-retardant aramid fiber are mixed at a mass ratio of 1:0.5 to prepare short fibers. After being combed in the carding process, the fibers are bundled through the trumpet 11 to obtain a raw sliver. The raw sliver is then drawn twice to obtain a finished sliver with a weight of 16.0 g / 5m. The initial spun covered yarn prepared in Step 1 is then placed on the filament bobbin 9 as the core yarn, and the finished sliver is placed on the roving bobbin 10 as the outer covering fiber. The outer covering fiber is unwound from the roving bobbin 10, passes through the trumpet 11, and is drafted by a four-roller drafting mechanism consisting of the back roller 12, the middle back roller 13, the middle front roller 14, and the front roller 15. The basalt core yarn is then unwound from the filament bobbin 9 and fed in by the front roller 15. Together with the drafted roving, it passes through the vortex chamber 16 to form a core-spun yarn. Finally, it is wound onto the yarn bobbin 19 through the lead-out roller 17 and the electronic yarn clearer 18. During the vortex spinning process, the feed ratio was controlled at 0.95, the draft ratio at 220, the nozzle air pressure at 0.5 MPa, and the nozzle outlet pressure at 0.24 MPa. In the prepared vortex core-spun composite yarn, the primary spun covering yarn accounted for 24.5% of the core-spun yarn mass, and the count of the vortex core-spun composite yarn was 12s.

[0087] Step 3: Twist the eddy core-spun composite yarn prepared in Step 2 using a twisting machine. Control the speed of the twisting machine to 40 r / min, the twist direction to be Z twist, and the twist degree to be 20 twists / 10cm to obtain strand A.

[0088] Step 4: At least one aramid filament unwound from the aramid filament package is output from the front nip of the ring spinning machine via the first fixed guide device 20, consisting of the front roller 22 and the front slip roller 23. A basalt filament unwound from another bobbin package is fed into the front nip of the ring spinning machine via the second fixed guide device 21, parallel to the aramid filament. The aramid and basalt filaments are then twisted into yarn via the speed difference between the guide hook 24, the wire ring 26 on the ring 27, and the bobbin on the bobbin support 25. The aramid and basalt filaments output from the front nip are twisted in the forward direction, with a twist of 32T / 10cm and a Z-twist direction, forming a pre-twisted composite yarn. This pre-twisted composite yarn is then wound onto a bobbin for later use.

[0089] Step 5: Place the initial twisted composite yarn spool onto the friction spinning support frame 39. Unwind a single initial twisted composite yarn 38 from the spool and guide it through the yarn guide hole 37. Under the control of the tensioner 36, it enters the friction spinning wedge zone formed by a pair of friction rollers 35 with a constant tension. Simultaneously, the outer flame-retardant short fiber sliver enters the roller drafting mechanism 32 of the friction spinning machine through the feed roller nip consisting of the feed roller and the feed rubber roller. After being drafted by the roller drafting mechanism, the flame-retardant short fiber sliver enters the carding system of the friction spinning machine. In the carding system, the carding roller 31... Under the action of friction, short fiber slivers are combed into loose fibers and fed into a wedge-shaped area composed of a pair of friction rollers 35 through the fiber feeding channel. There, they merge with the initial twisted composite yarn. Under the suction and friction of the friction rollers 35, the flame-retardant fiber slivers are evenly coated onto the surface of the initial twisted composite yarn, forming a friction-core-spun composite yarn with a core-sheath structure. The composite yarn is then continuously drawn out through the guide roller nip, composed of the first guide roller 33 and the second guide roller 34, and sequentially passes through the guide hole 29, the guide traverse device 30, and the grooved drum 28 of the friction spinning machine, finally winding onto the bobbin to form a yarn package. The relevant parameters of the friction spinning machine are: combing roller speed 3800 r / min; friction roller speed 3500 r / min; feeding speed 0.5 m / min; output speed 10.0 m / min; and take-up speed 12 m / min.

[0090] Step 6: The friction-wrapped composite yarn with the core-sheath structure described in Step 5 is output from the front roller 41 via the drafting device and passes through the upper hollow spindle 42 and the lower hollow spindle 44 respectively. The rotation of the upper and lower hollow spindles causes the filaments wound on the hollow spindles to unwind, thereby covering the basalt composite yarn with the core-sheath structure.

[0091] The aramid 1414 filament is unwound from the aramid 1414 filament tube surrounding the upper hollow spindle 42. The aramid 1414 filament and the friction-spun core-coated composite yarn of the core-sheath structure pass parallel to the upper hollow spindle 42 and enter the rotating twister 43. The twist direction is forward twisting, so that the aramid 1414 filament and the friction-spun core-coated composite yarn of the core-sheath structure are wrapped in the forward direction to form a wrapped composite yarn. Further, the aramid 1414 filament is unwound from the aramid 1414 filament tube surrounding the lower hollow spindle 44. At the same time, the aramid 1414 filament and the wrapped composite yarn pass parallel to the lower hollow spindle 44 and are twisted in the reverse direction to wrap the composite yarn in the reverse direction to form a cross-wound composite yarn. The cross-wound composite yarn is output through the output roller 45 and wound onto the bobbin through the yarn guiding device 46 and the yarn guiding hole 47 to form a bobbin 48. The upper hollow spindle 42 rotates at 2000 r / min, the lower hollow spindle 44 rotates at 4000 r / min, and the output roller 45 has a speed of 5 m / min.

[0092] Step 7: One cross-wound composite yarn unwound from the cross-wound composite yarn package is output from the front nip of the ring spinning machine via the first fixed guide device 20, consisting of the front roller 22 and the front slip roller 23. Another cross-wound composite yarn unwound from the other cross-wound composite yarn package is fed into the front nip of the ring spinning machine via the second fixed guide device 21, parallel to the first cross-wound composite yarn. The two cross-wound composite yarns are twisted into yarn via the guide hook 24 and the speed difference between the rotation of the wire ring 26 on the ring 27 and the yarn tube on the bobbin support 25. The twisting direction is reverse twisting, forming untwisted ply B, which is then wound onto the bobbin for subsequent weaving. Figure 7 As shown.

[0093] Step 8: Using a weaving process, the ply yarn B prepared in step 7 is used as the warp yarn, and the ply yarn A prepared in step 3 is used as the weft yarn for weaving to obtain an inorganic fiber composite yarn blended fabric, such as... Figure 8 As shown. The inorganic fiber composite yarn blended fabric has a warp density of 120 threads / 10cm and a weft density of 140 threads / 10cm.

[0094] Comparative Examples 1-4

[0095] Comparative Examples 1-4 provide a processing method for inorganic fiber composite yarn blended fabrics. Compared with Example 1, the only difference is that in Comparative Example 1, the basalt fiber multifilament was not twisted in step 1, and the basalt multifilament was directly used as the core yarn for coaxial spinning; in Comparative Example 2, the core-spun yarn was not prepared using vortex spinning, but the initial spun covered yarn was directly twisted to obtain ply yarn A; in Comparative Example 3, the core-sheath structure friction core-spun composite yarn was not prepared using friction spinning, but the initial twisted composite yarn was directly cross-wound through hollow spindles; in Comparative Example 4, the core-sheath structure friction core-spun composite yarn was directly twisted to obtain ply yarn B, but the hollow spindles were not used for cross-wound. Other experimental conditions were the same as in Example 1, and will not be repeated here.

[0096] The inorganic fiber composite yarn blended fabrics prepared in Example 1 and Comparative Examples 1-4 were subjected to performance tests, including abrasion resistance test, TPP test and air permeability test.

[0097] 1. Wear resistance test

[0098] The abrasion resistance of inorganic fiber composite yarn blended fabric was tested using a Martindale abrasion tester. The sample was placed in a laboratory environment for more than 8 hours. A sample was cut from a flat area and placed in the instrument. The test was performed according to a predetermined number of times, with the pressure plate on the friction cloth weighing 2.5KG.

[0099] 2. TPP Test

[0100] The TPP value of the inorganic fiber composite yarn blended fabric was tested using a thermal protection performance tester. The sample was placed on the test table for testing, and the time of second-degree burn was recorded after the test.

[0101] According to the formula TPP value (cal / cm) 2 =FT, calculate the TPP value of the sample;

[0102] F: Specified heat source heat flow (2.0 cal / (cm³)) 2 ·s))

[0103] T: Time (s) required to cause a second-degree burn.

[0104] 3. Breathability test

[0105] The air permeability of the inorganic fiber composite yarn blended fabric was tested using an air permeability tester. The sample size was 10*10cm. The pressure difference value was set to 100Pa. The test was repeated ten times on different parts of the sample, and the data were recorded and averaged.

[0106] All tests were conducted under standard laboratory conditions, namely a temperature of 23±5℃ and a humidity of 65±15%RH.

[0107] The performance test results of the inorganic fiber composite yarn blended fabrics prepared in Example 1 and Comparative Examples 1-4 are shown in Table 1.

[0108] Table 1 Performance test results of Example 1 and Comparative Examples 1-4

[0109] serial number Abrasion resistance (times) <![CDATA[TPP value (cal / cm 2 )]]> Breathability (mm / s) Example 1 10600 13.8 901 Comparative Example 1 8680 13.2 890 Comparative Example 2 6700 12.0 850 Comparative Example 3 9700 10.5 790 Comparative Example 4 5697 11.8 820

[0110] As shown in Table 1, in Comparative Example 1, when the basalt multifilament was not twisted and was directly used as the core yarn in coaxial spinning, the abrasion resistance of the fabric decreased. Because the basalt multifilament was not twisted, the cohesion between fibers was weak, making relative slippage more likely and causing breakage. The TPP value and air permeability were slightly reduced. In Comparative Example 2, the core-spun yarn was not prepared using vortex spinning, resulting in a fabric with reduced abrasion resistance. Because the basalt fibers were exposed and in direct contact with the outer surface, they were more prone to brittle breakage and burrs, further reducing the fabric's abrasion resistance. Air permeability was slightly reduced because the lack of vortex spinning to cover the fibers resulted in tight contact between the weft yarns, affecting air permeability. The TPP value decreased because the lack of vortex spinning to cover the flame-retardant fibers reduced thermal protection performance. In Comparative Example 3, the core-spun fabric prepared without friction spinning had the outer filament and basalt filament exposed, lacking affinity. The lack of skin-friendly fiber coating prevents basalt filaments from completely covering the core layer, resulting in decreased abrasion resistance and a significant reduction in TPP value. Similarly, the absence of skin-friendly fire-retardant fibers on the outer layer of friction spinning leads to poorer thermal protection. Reduced breathability is due to the lack of friction-spun fiber coating on the warp yarns, resulting in tighter contact between the warp yarns and reduced air permeability. Comparative Example 4 did not use hollow spindle-wrapped filaments, directly employing a core-sheath structure composite yarn. The resulting fabric exhibited significantly reduced abrasion resistance because the yarn's poor abrasion resistance, due to the absence of abrasion-resistant filaments, resulted in poor fabric abrasion resistance. It also had some impact on the fabric's TPP performance. Since the selected filaments also possess flame-retardant properties, the absence of filaments also negatively affected thermal protection. Simultaneously, the fabric's breathability was also affected; the lack of filament wrapping resulted in a looser yarn structure with more fuzz, smaller gaps in the fabric, and poorer air permeability.

[0111] In summary, the present invention, through the development of combined spinning technologies of friction spinning, ring spinning, hollow spinning, and coaxial wet spinning, produces fabrics with abrasion resistance of 10,000 cycles, while also improving the thermal protection and breathability of the fabrics.

[0112] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A processing method for an inorganic fiber composite yarn blended fabric, characterized in that, Includes the following steps: Step 1: Twist the inorganic fiber multifilament to obtain inorganic fiber initial twisted yarn. Use the inorganic fiber initial twisted yarn as the core yarn of coaxial spinning and place it on the inner shaft of the coaxial needle of the wet spinning equipment. Place the organic spinning solution on the outer shaft of the coaxial needle. The inorganic fiber initial twisted yarn passes through the inner shaft of the coaxial needle and is pulled out by the winding device. The organic spinning solution is extruded through the outer shaft of the coaxial spinning needle and solidified in the coagulation bath to form an inorganic-organic composite initial spun covered yarn. The twist of the inorganic fiber multifilament is 20~50 twists / 10cm; The polymer in the organic spinning solution is 7-30 wt%; In the primary spun covered yarn, inorganic fibers account for 30-70% of the primary spun covered yarn mass; Step 2: After the short fibers are combed through the carding process, they are bundled through the trumpet mouth to obtain the sliver; The raw sliver is drawn into a sliver through two drawing processes to obtain a sliver. Then, the initial spun covered yarn prepared in step 1 is used as the core yarn and the sliver is used as the outer covering fiber. The vortex spinning process is used to prepare the vortex core-spun composite yarn. In the vortex spinning process, the feed ratio is controlled at 0.85~0.98, the draft ratio is 210~230, the nozzle air pressure is controlled at 0.4~0.6MPa, and the nozzle extraction pressure is 0.2~0.3MPa; the count of the prepared vortex core-spun composite yarn is 10~30s. Step 3: Twist the eddy current core-spun composite yarn prepared in Step 2 using a twisting machine to obtain ply yarn A; Step 4: Feed the high-rigidity and brittle inorganic fiber filaments and the flexible and wear-resistant organic filaments alternately and parallel into the front nip of the ring spinning machine, and twist them in the forward direction to obtain the initial twisted composite yarn of inorganic and organic composite twisting. The twist of the forward twisting is 10~40 twists / 10cm; Step 5: The initial twisted composite yarn obtained in Step 4 is fed into the friction spinning wedge zone composed of a pair of friction rollers under constant tension. At the same time, the outer short fiber sliver enters the friction spinning roller drafting mechanism through the feed roller nip composed of the feed roller and the feed rubber roller. Under the action of the suction force and rotational friction force of the friction roller, the outer short fiber sliver is condensed and orderly wrapped around the outer layer of the initial twisted composite yarn to form a friction core-spun composite yarn with a core-sheath structure. Step 6: The friction core-spun composite yarn with the core-sheath structure described in Step 5 is output from the front roller through the drafting device and passes through the upper and lower hollow spindles respectively. The rotation of the upper and lower hollow spindles causes the wrapped filaments wound on the hollow spindles to unwind, thereby covering the wrapped filaments with the core-sheath structure of the friction core-spun composite yarn in Step 5. By wrapping in the forward and reverse directions in sequence, a cross-wound composite yarn is obtained. The cross-wound composite yarn is wound onto a parallel bobbin to form a parallel bobbin package. The upper hollow ingot rotates at 2000 r / min, and the lower hollow ingot rotates at 4000 r / min; Step 7: The doubling bobbin winding device obtained in step 6 is used on a ring spinning machine for reverse twisting to obtain ply B; Step 8: Using a machine weaving process, the ply yarn B prepared in step 7 is used as the warp yarn and the ply yarn A prepared in step 3 is used as the weft yarn to weave and obtain an inorganic fiber composite yarn blended fabric. The inorganic fiber composite yarn blended fabric has a warp density of 100-140 threads / 10cm and a weft density of 120-160 threads / 10cm.

2. The processing method of the inorganic fiber composite yarn blended fabric according to claim 1, characterized in that, In step 1, the inorganic fiber multifilament consists of 10 to 300 inorganic fibers, with a diameter of 7 to 11 μm for each fiber. The inorganic fiber is one of basalt fiber, alumina fiber, carbon fiber, inorganic alkali-resistant glass fiber, quartz fiber, or ceramic fiber. The organic spinning solution is prepared as follows: the polymer is added to a solvent and stirred at 100 to 1000 rpm for 1 to 30 hours to prepare the organic spinning solution. The polymer is one or more of cellulose acetate, polyurethane, polyacrylic acid, polyvinylidene fluoride, polyacrylonitrile, polymethacrylic acid, polyacrylaldehyde, polyacrylamide, polyimide, hydroxyl polyacrylate, polyacrylate butadiene nitrile, polystyrene, or polytetrafluoroethylene. The solvent is one or two of N,N-dimethylacetamide or tetrahydrofuran. The coagulation bath is water.

3. The processing method of the inorganic fiber composite yarn blended fabric according to claim 1, characterized in that, In step 2, the short fiber is one or more of cotton fiber, seaweed fiber, flame-retardant aramid fiber, flame-retardant viscose fiber, flame-retardant acrylic fiber, flame-retardant polyester fiber, and flame-retardant nylon fiber, and the sliver weight is 15~20g / 5m; the initial spun covering yarn accounts for 20~60% of the mass of the prepared vortex core-spun composite yarn.

4. The processing method of the inorganic fiber composite yarn blended fabric according to claim 1, characterized in that, In step 3, the twisting machine used for twisting has a speed of 20~50 r / min, a twist direction of Z twist, and a twist degree of 10~40 twists / 10cm.

5. The processing method of the inorganic fiber composite yarn blended fabric according to claim 1, characterized in that, In step 4, the high-rigidity brittle inorganic fiber filament is one or more of basalt filament, carbon fiber filament, glass fiber filament, and boron fiber filament; the flexible and wear-resistant organic filament is one or more of ultra-high molecular weight polyethylene filament, aramid filament, polyester filament, and nylon filament; the forward twisting direction is Z-twist.

6. The processing method of the inorganic fiber composite yarn blended fabric according to claim 1, characterized in that, In step 5, the outer short fiber strip is one or more of polyimide fiber, aramid 1414 fiber and aramid sulfone fiber; the relevant parameters for friction spinning are: combing roller speed of 3800 r / min, friction roller speed of 3500 r / min, feed speed of 0.5 m / min, output speed of 10.0 m / min, and take-up speed of 12 m / min.

7. The processing method of the inorganic fiber composite yarn blended fabric according to claim 1, characterized in that, In step 6, the filament wrapped around the hollow spindle is one or more of aramid filament, ultra-high molecular weight polyethylene filament, and polyester filament; the output roller speed is 5 m / min.

8. A blended fabric of inorganic fiber composite yarn, characterized in that, The inorganic fiber composite yarn blended fabric is obtained by the processing method of the inorganic fiber composite yarn blended fabric according to any one of claims 1 to 7.

9. The application of the inorganic fiber composite yarn blended fabric according to claim 8, characterized in that, The inorganic fiber composite yarn blended fabric is used for tents, bed sheets, sofa covers, fire suits, fire blankets, fire extinguishing blankets, and fireproof curtains.

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