CN110267508B - Self-rolling type shielding sleeve and preparation method thereof - Google Patents
Self-rolling type shielding sleeve and preparation method thereof Download PDFInfo
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- CN110267508B CN110267508B CN201910545013.XA CN201910545013A CN110267508B CN 110267508 B CN110267508 B CN 110267508B CN 201910545013 A CN201910545013 A CN 201910545013A CN 110267508 B CN110267508 B CN 110267508B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
- G02B6/4439—Auxiliary devices
- G02B6/4459—Ducts; Conduits; Hollow tubes for air blown fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/02—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients
- H01B9/024—Power cables with screens or conductive layers, e.g. for avoiding large potential gradients composed of braided metal wire
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K9/00—Screening of apparatus or components against electric or magnetic fields
- H05K9/0073—Shielding materials
- H05K9/0098—Shielding materials for shielding electrical cables
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Abstract
The invention relates to a self-rolling type shielding sleeve which is prepared by rolling and shaping a sheet-shaped woven fabric; the woven fabric has two free edges extending along a longitudinal axis, and is self-curled into a curled state in which the two free edges overlap each other without an external force, the two free edges can be switched to an open state under the external force, and the knitted fabric is restored to the curled state after the external force is removed; the woven fabric is made of warp yarns and weft yarns; the warp yarns are core-spun yarns containing organic fibers and metal wires and/or metal wire plying; the weft yarns comprise core spun yarns and thermoplastic organic fibers. The invention also relates to a preparation method of the sleeve. The sleeve has the following advantages: the weight is light; the weaving performance is good; is not easy to break; the product has excellent puncture strength, light aging resistance, high temperature resistance, scratch and abrasion resistance, mildew and water resistance and other performances; the protective film is particularly suitable for effectively protecting tubular objects such as cables, optical cables and the like under severe working conditions such as high temperature, high irradiation intensity, electromagnetic signal interference and the like.
Description
Technical Field
The invention relates to the technical field of new materials, in particular to a self-rolling type shielding sleeve and a preparation method thereof.
Background
The woven protective sleeve is widely applied to protection of tubular objects, such as wire harnesses, cables and the like in the fields of automobiles, ships, aerospace and the like. Currently, there are two types of such protective sleeves: (1) a closed sleeve woven by fibers, and (2) an open sleeve woven by fibers. When a protected object breaks down or needs to be overhauled, the first sleeve is inconvenient to disassemble and assemble. The second type of sleeve avoids this disadvantage. Chinese patent ZL201220377807.3 discloses a self-adhesive sleeve, which adopts unwoven multifilament to replace the thread gluing rough surface of the existing sleeve, realizes the coating of an object by forming bonding between the multifilament and the thread gluing hook surface, does not need to arrange the thread gluing rough surface on the sleeve main body, and reduces the weaving process; chinese patent ZL201120438767.4 discloses a self-rolling type sleeve, i.e. self-rolling in the radial direction of the sleeve to partially overlap each other, and can be opened by external force, which only serves to protect the cable and facilitate construction, but does not have stab-resistant and shielding properties. At present, the number of wire harnesses in machines in various fields is gradually huge, a protective sleeve with a shielding function is urgently needed to prevent signals from interfering with each other, a Chinese patent ZL201310584056.1 adopts PET monofilament, PA monofilament or PPS monofilament and metal wire stranded warp and weft to be woven into a self-rolling sleeve, the sleeve has a shielding function, but after the adopted plastic fiber wire and the metal wire are stranded and woven, the weight of the sleeve is large, in addition, the breaking strength of the metal wire is low, and the sleeve is easy to break in the weaving process; moreover, after the casing product is formed, the casing product is easily punctured by a hard object, and the protected object is damaged.
Disclosure of Invention
In order to solve the above problem, a first aspect of the present invention provides a self-rolling type shielding sleeve, characterized in that:
the self-rolling shielding sleeve is made by rolling and shaping a sheet-shaped woven fabric;
said woven fabric having first and second opposite free edges extending along a longitudinal axis of said sleeve and being self-curled in a curled condition in which said first and second free edges overlap one another in the absence of an external force, said first and second free edges being transformable from said overlapped curled condition to an open condition in which they are spaced apart from one another by the application of an external force, and said first and second free edges returning to said curled condition upon removal of the external force;
the woven fabric is prepared by warp and weft through warp and weft weaving;
the warp yarn is (a) a first core spun yarn comprising a first organic fiber and a first metal wire and/or (b) a metal wire ply formed from a third metal wire;
the weft yarn comprises (c) a second core-spun yarn comprising second organic fibers and second metal filaments and (d) thermoplastic organic fibers.
A second aspect of the present invention provides a method of manufacturing the self-rolling shield sleeve of the first aspect of the present invention, the method comprising the steps of: (1) providing the woven fabric; (2) and (3) curling the woven fabric at the plasticizing temperature of the thermoplastic organic fibers in the weft yarns, and then cooling and setting to obtain the self-rolling type shielding sleeve.
The shielding function of the self-rolling type shielding sleeve is realized by the core-spun yarn containing the organic fiber and the metal wire, or the metal wire plying and the core-spun yarn containing the organic fiber and the metal wire are jointly realized. Compared with the sleeve woven by pure metal wires and the sleeve woven by combining metal fibers and organic fibers, the sleeve woven by the core-spun yarns has the following advantages: the metal network can be formed, so that the shielding effect which is the same as that of a pure metal net and a metal net formed by stranding and weaving metal fibers and organic fibers is achieved, and meanwhile, the weight of the self-rolling type shielding sleeve is greatly reduced; (2) the weaving performance of the weft containing the metal wires is improved, and the weft is not easy to break; (3) the puncture resistance is high. In addition, the self-rolling type shielding sleeve also has the following advantages: (4) the light aging resistance and/or the high temperature resistance are excellent; (5) the mildew-proof and waterproof performance is good; (6) the scratch and abrasion resistance is excellent; (7) the structure is simple, the mounting and the dismounting can be realized quickly, and the sleeve and the protected object therein can be conveniently mounted and overhauled without tools; (8) the industrial production is easy; (9) the protective film is particularly suitable for effectively protecting tubular objects such as cables, optical cables and the like under severe working conditions such as high temperature, high irradiation intensity, electromagnetic signal interference and the like.
Drawings
Fig. 1 is a schematic view of a core spun yarn comprising an organic fiber and a metal wire, wherein 11 represents the organic fiber and 12 represents the metal wire.
Fig. 2 is a schematic drawing of the wire stranding, with 13 representing a third wire.
FIG. 3 is a schematic view of one embodiment of a woven fabric used in the self-rolling shielding sleeve of the present invention, wherein the woven fabric is in a fully deployed state.
Fig. 4 is an embodiment of a woven fabric used for the self-rolling type shielding bushing of the present invention, which is self-rolled into a bushing without an external force.
Fig. 5 is a cross-sectional view of one embodiment of the self-rolling shielding sleeve of the present invention, showing the angle that the mutually overlapping portions occupy on the circumference of the sleeve being 180 degrees.
Fig. 6 is a photograph of a self-rolling type shielding sleeve prepared in example 1 of the present invention.
In the drawings, 1 denotes a first free edge; 2 denotes a second free edge, 3 denotes a sign line; 11 represents an organic fiber; 12 represents a metal wire contained in the core yarn; 13 represents the wire in the wire strand; the arrow direction indicates the warp direction; the angle theta is the angle occupied by the overlapped part of the first free edge and the second free edge on the circumference of the sleeve; m represents the position of the marker line in the cross-sectional view.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described more clearly and completely in conjunction with the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
As described above, the first aspect of the present invention provides a self-rolling type shield sleeve. The self-rolling type shielding sleeve is made by rolling and shaping a sheet-shaped woven fabric. The woven fabric has opposite first and second free edges 1, 2 (see fig. 3) extending along the longitudinal axis of the sleeve and is self-curled in a curled condition in which the first and second free edges overlap one another in the absence of an external force, the first and second free edges being transformable from the mutually overlapping curled condition to an open condition in which they are spaced apart from one another by the application of an external force, and the first and second free edges returning to the curled condition after the external force is removed. The warp direction is the axial of following formula of rolling up shielding sleeve certainly, in order to follow the sleeve pipe circumferencial direction is the woof direction, it utilizes the warp along the warp direction and the woof along the woof direction to weave the fabric and make through the longitude and latitude weaving. The warp yarn may be (a) a first core wrap yarn comprising a first organic fiber and a first metal filament and/or (b) a metal filament ply formed from a third metal filament. The weft yarn comprises (c) a second core-spun yarn comprising second organic fibers and metal filaments and (d) thermoplastic organic fibers.
The core spun yarn has a meaning generally understood by those skilled in the art, and may include an organic fiber 11 and a metal filament 12 wound around the organic fiber 11 as shown in fig. 1. The wire strands have the meaning commonly understood by those skilled in the art and may comprise wires 13 forming the wire strands, as shown in fig. 2.
The shielding function of the self-rolling type shielding sleeve is realized by the covering yarn containing the organic fiber and the metal wire, or the combination of the metal wire ply and the covering yarn containing the organic fiber and the metal wire. The inventor finds that the sleeve braided by the covering yarn has the following advantages compared with the sleeve braided by pure metal wires and braided by plying metal fibers and organic fibers: the metal network can be formed, so that the shielding effect which is the same as that of a pure metal net and a metal net formed by stranding and weaving metal fibers and organic fibers is achieved, and meanwhile, the weight of the self-rolling type shielding sleeve is greatly reduced; the problems of poor weaving performance, easy breakage in the weaving process and the like existing when the metal wire is used as the weft are avoided, and after the core-spun yarn is woven into the sleeve, the main force bearing part is the organic fiber weaving part, so that the weaving performance of the weft containing the metal wire is improved, and the core-spun yarn fabric can prevent hard objects from being pierced, so that the protected objects are not damaged.
In the present invention, the first organic fiber and the second organic fiber may be the same as or different from each other. In some preferred embodiments, the first organic fiber and/or the second organic fiber is selected from the group consisting of polyimide fibers, aramid fibers, polybenzoxazole fibers.
In the present invention, the first core-covering yarn and the second core-covering yarn are the same as or different from each other. The first and second core yarns are identical to each other, i.e. the first and second organic fibers are identical to each other and the first and second metal filaments are identical to each other. In the case where the warp yarn contains the first core-covering yarn, the first core-covering yarn and the second core-covering yarn may be different from each other, that is, the first organic fiber is different from the second organic fiber or the first metal wire is different from the second metal wire, or the first organic fiber is different from the second organic fiber and the first metal wire is different from the second metal wire. Of course, the warp yarns may also not comprise the first core-covering yarn, which is to be understood as a special form in which the first core-covering yarn and the second core-covering yarn differ from each other.
In some preferred embodiments, the first organic fiber and/or the second organic fiber may independently be a multifilament fiber. More preferably, the multifilament fibre has a multifilament linear density of 100D to 3000D (e.g. 100, 200, 500, 1000, 2000 or 3000D), such as 500D to 1500D. Alternatively, the multifilament fiber has from 1 to 10 strands (e.g., 1, 2, 5, or 10).
The first metal wire, the second metal wire and the third metal wire may be the same as each other two by two (for example, any two of them are the same as each other, and the other one is different), may be all the same as each other three, or all the three kinds of them are different from each other.
The present invention is not particularly limited in the sectional shape of the first wire, the second wire, and the third wire. In some preferred embodiments, the first, second and third wires are independently circular in cross-sectional shape, more preferably the first, second and third wires are independently 0.01mm to 1.0mm (e.g., 0.1, 0.3, 0.5 or 0.8mm) in diameter with a circular cross-sectional shape; preferably, the diameters of the first wire, the second wire and the third wire, the cross-sectional shapes of which are circular, are independently 0.05mm to 0.5 mm. In some preferred embodiments, the first, second and third wires are independently rectangular in cross-sectional shape, more preferably the first, second and third wires are independently 0.05mm to 0.50mm (e.g., 0.08, 0.1 or 0.3mm) in width; the first, second and third wires, which are rectangular in cross-sectional shape, independently have a thickness of 0.01mm to 0.20mm (e.g., 0.02, 0.04 or 0.08 mm); preferably, the first, second and third wires having a rectangular sectional shape independently have a width of 0.1 to 0.3mm and a thickness of 0.010 to 0.100 mm. More preferably, the number of the first wire and the second wire is independently 1 to 5 (e.g., 1, 2, 3, 4, or 5), and the number of the third wire is 3 to 15 (e.g., 3, 4, 5, 8, 10, or 15). It is further preferred that the first metal wire, the second metal wire and the third metal wire are independently an alloy wire, and more preferably independently an alloy wire selected from the group consisting of a tin-plated copper wire, a tin-plated copper foil wire, a stainless steel wire or an aluminum magnesium wire.
The thermoplastic organic fibers may be monofilament fibers. More preferably, the monofilament fiber has a monofilament diameter of 0.10mm to 1.00mm (e.g., 0.10, 0.20, 0.50, or 1.00 mm); it is also preferable that the number of the thermoplastic organic fibers is 1 to 10 (for example, 1, 2, 5 or 10). It is also preferred that the thermoplastic organic fiber is selected from the group consisting of polyphenylene ether fiber, polyphenylene sulfide fiber, polyether ether ketone fiber, polyethylene fiber, polypropylene fiber, thermoplastic polyimide fiber, nylon fiber and polyester fiber.
In some preferred embodiments, at least one, preferably at least two, more preferably all three of the first organic fibers, the second organic fibers, and the thermoplastic organic fibers comprise polyimide fibers. In some embodiments, the first organic fiber and/or the second organic fiber is a non-thermoplastic polyimide fiber. In some embodiments, the thermoplastic organic fibers are thermoplastic polyimide fibers. In some embodiments, the first organic fiber or the second organic fiber is a non-thermoplastic polyimide fiber and the thermoplastic organic fiber is a thermoplastic polyimide fiber. In some preferred embodiments, the first and second organic fibers are non-thermoplastic polyimide fibers and the thermoplastic organic fibers are thermoplastic polyimide fibers.
The inventor surprisingly found that the use of polyimide fibers in the warp and/or weft yarns can provide the sleeve with radiation resistance and light aging resistance, and also provide the sleeve with high strength and high modulus, thereby having good puncture resistance, which is not provided by the technical scheme of using polyimide fibers in the warp and/or weft yarns but using other high-performance organic fibers. Furthermore, the inventors have found that when polyimide fibers such as non-thermoplastic polyimide fibers are used as the warp yarns, the obtained self-rolling shielding sleeve has high strength and modulus, thereby having excellent puncture resistance, excellent radiation resistance and light aging resistance, and mildew resistance without post-treatment, which cannot be realized even when the weft yarns contain the same amount of polyimide fibers. The present inventors have further found that when polyimide fibers such as thermoplastic polyimide fibers are used as the weft, the resulting self-wound shielding sleeve has excellent high-temperature resistance without post-treatment, which cannot be achieved even when the warp contains the same amount of polyimide fibers. Therefore, the corresponding technical scheme can be selected according to the requirements of specific use environments such as long-term sun exposure environmental conditions or extreme high-temperature environmental conditions.
In some preferred embodiments, the first organic fibers are non-thermoplastic organic fibers and the second organic fibers are more thermoplastic than the first organic fibers. For example, the first organic fibers are non-thermoplastic organic fibers and the second organic fibers are thermoplastic organic fibers.
In some preferred embodiments, the warp yarns have a weave density of 10 to 60, preferably 20 to 40, strands per inch. In other preferred embodiments, the weft yarns are woven at a density of 10 to 50, preferably 15 to 30, yarns/inch. The inventor finds that the sleeve woven by warps and wefts is particularly excellent in the scratch and abrasion resistance, the water resistance and the puncture resistance when the multifilament linear density of the warps is 500D to 1500D, the weaving density of the warps is 20 to 40 strands/inch, and the weaving density of the wefts is 15 to 30 strands/inch in the preparation process of the self-rolling type shielding sleeve.
In some preferred embodiments, the woven fabric is woven with a maximum clad diameter marker wire for use after crimping into a sleeve. Preferably, the maximum clad diameter marker wire is formed of fibers having a color different from that of the non-marker wire region on the woven fabric. For example, the woven fabric is woven with a crimped maximum wrap diameter marker thread having a differently colored warp yarn designation. More preferably, the closest distance between the marker line and the free edge of the woven fabric in the warp direction is 1/8 times the length of the free edge of the woven fabric in the weft direction. Still more preferably, the marker line is located on the outside of the woven fabric (i.e., the side of the woven fabric that is outside after being crimped into the sleeve); it is further preferred that the marker line is located at the inner end of the woven fabric (i.e. the end of the woven fabric where the first and second free edges overlap and curl inward), for example the woven fabric of figure 1 where the first free edge curls inward of the second free edge after folding away from the plane (i.e. downward) (see figures 3 and 5).
In some preferred embodiments, the woven fabric may be a plain weave structure or a twill weave structure with interlacing warps and wefts.
It is also preferable that the angle θ occupied by the overlapping portions on the circumference of the sleeve is 2 to 360 degrees (e.g., 30, 60, 90, 120, 180, 240, or 360) (see fig. 5). The angle θ that the overlapping portions occupy on the circumference of the sleeve may vary during use depending on how much wire, such as the bundle of cables, is wrapped within the sleeve.
A second aspect of the present invention provides a method of manufacturing the self-rolling shield sleeve of the first aspect of the present invention, the method comprising the steps of: (1) providing the woven fabric; (2) and (3) curling the woven fabric at the plasticizing temperature of the thermoplastic organic fibers in the weft yarns, and then cooling and setting to obtain the self-rolling type shielding sleeve.
In some preferred embodiments, the method further comprises the step of subjecting the woven fabric to a mildewproof treatment and/or a waterproof treatment after the step (1) and before the step (2) and then drying and ironing. The mildewproof treatment and the waterproof treatment may be performed by either one of the treatments or both of the treatments as required. After the mildew-proof and/or waterproof treatment, the woven fabric may be subjected to an ironing process (e.g., by a hot drying roll at 250 ℃) to iron the woven fabric flat. And then, the woven fabric is deformed along the weft yarn direction by using a package device, is shaped into a roll shape and then is cooled and shaped, the shaped wound rolls are at least partially overlapped, the finally obtained roll-shaped woven fabric can be opened and sleeved on a tubular object such as a wire harness and the like to be protected under the action of external force, and the original shape is automatically restored after the external force is cancelled.
In some preferred embodiments, the mold-proof treatment is performed using a mold-proof treatment liquid. More preferably, the solid content of the mildewproof treatment liquid is 5 to 50% by weight (e.g., 5, 10, 15, 20, 25, 30, 35, 40, 45, or 50% by weight). The mildew-proof agent in the mildew-proof treatment liquid can be organosilicon quaternary ammonium salt, phenols (such as phenol), chlorophenols (such as pentachlorophenol) and the like. For example, a mold preventive GN-A626 available from Guangxi shoe materials, Inc. of Dongguan can be used.
In some preferred embodiments, the water repellent treatment is performed using a water repellent treatment liquid. More preferably, the solids content of the water repellent treatment liquid is 20 to 50 wt% (e.g., 25, 30, 35, 40, 45, or 50 wt%). The water repellent treatment liquid used for the water repellent treatment may be, for example, a fluorocarbon-based water repellent treatment liquid or a silicone-based water repellent treatment liquid, and for example, a water repellent GN-F450 available from Guangdong shoe materials Co., Ltd.
In some preferred embodiments, the speed of the woven fabric through the mould proof treatment and/or the water repellent emulsion is from 2 to 10 m/min, for example 2, 5 or 10 m/min.
It is also preferred that the temperature of the drying is 50 to 350 ℃, for example 50, 100, 150, 200, 250, 300 or 350 ℃. It is also preferred that the ironing is performed by hot roll at high temperature, the hot roll temperature being from 200 to 300 ℃, for example 250 ℃; the speed of passage over the hot roll is from 2 to 10 m/min, for example 2, 5 or 10 m/min.
In some preferred embodiments, the shaping is performed by heating a woven fabric, then winding the woven fabric into a roll using a winding apparatus, and then cooling; preferably, the temperature of the heating is 50 to 350 ℃ (e.g., 50, 100, 150, 200, 250, 300, or 350 ℃). It is also preferred that the speed of the woven fabric through the packaging apparatus is from 2 to 10 metres per minute (e.g. 2, 5 or 10 metres per minute).
Examples
The technical solutions of the present invention will be illustrated below in the form of examples, but the scope of protection of the present invention is not limited to these examples.
Example 1
The warp yarns are combined by 2 strands of polyimide long fibers and the constant tension of the core-spun yarns of the tinned copper wires, the multifilament linear density of the polyimide long fibers is 300D, the diameter of each tinned copper wire is 0.1mm, and the number of the tinned copper wires is 1.
The weft yarns are 1 polyether-ether-ketone long fiber monofilament with the monofilament diameter of 0.25mm, the other strand is core-spun yarns of polyimide long fibers and tinned copper wires, the multifilament linear density of the polyimide long fibers is 300D, the diameter of the tinned copper wires is 0.1mm, and the number of the tinned copper wires is 1. The weaving density of the warp is 30 strands/inch, the weaving density of the weft is 20 strands/inch, the weft is woven into a plain weave belt-shaped structure of warp and weft, meanwhile, a free edge along the warp direction is woven with 2 strands of white aramid fiber long fibers to form a mark line with the maximum use diameter, and the shortest distance between the mark line and the free edge of the warp is 7 mm.
And (3) sequentially passing the woven ribbon-shaped fabric through a treatment tank with solid content of 40% mildew-proof liquid, a drying hot roller at 250 ℃, a treatment tank with solid content of 40% waterproof treatment liquid and a drying hot roller at 250 ℃ at the speed of 8m/min, and cooling to room temperature to obtain the flat ribbon-shaped fabric.
The above ribbon-like fabric was passed through a winding device at 290 ℃ at a speed of 8m/min, and after cooling to room temperature, a self-wound shielding sleeve was obtained in which the overlapping portion occupied an angle of 90 degrees on the circumference of the sleeve. A photograph of the manufactured self-rolling type shielding sleeve is shown in fig. 6.
The bushing obtained in the embodiment 1 is tested, and the shielding attenuation performance is tested in the frequency range of 10MHz to 1GHz according to GB/T-177337.1-2000; testing the mould resistance according to GJB150.10A-2009; after 168h of heat treatment, the sleeves were tested for scratch and abrasion resistance according to EN6059-302:1997 and EN6059-403: 1997; the water-repellent properties of the sleeves were tested according to EN6059-302:1997 and EN6059-305: 1997; irradiating the sleeve for 200 hours by a xenon arc lamp, testing the strength retention rate of the filament bundle, and obtaining the light aging resistance of the sleeve; inspecting the puncture-proof performance of the casing by adopting a tower drop test, applying 1 joule (J) of energy and inspecting the puncture depth of the casing; the specific test results for the sleeves are shown in table 2.
Example 2
The warp yarns are combined by the constant tension of the covering yarns of 2 strands of aramid long fibers and tinned copper foil yarns, the multifilament linear density of the aramid long fibers is 500D, the width of the tinned copper foil yarns is 0.3mm, the thickness of the tinned copper foil yarns is 0.08mm, and the number of the yarns is 2.
The weft yarns are 1 polyphenylene sulfide long fiber monofilament with the monofilament diameter of 0.5mm, the other one is core-spun yarns of aramid long fibers and tinned copper foil filaments, the multifilament linear density of the aramid long fibers is 500D, the width of the tinned copper foil filaments is 0.3mm, the thickness of the tinned copper foil filaments is 0.08mm, and the number of the filaments is 2. The weaving density of the warp is 30 strands/inch, the weaving density of the weft is 20 strands/inch, a twill weaving band-shaped structure which is woven into warp and weft is woven, meanwhile, a free edge along the warp direction is woven with 2 strands of white aramid fiber long fibers to form a mark line with the maximum using diameter, and the shortest distance between the mark line and the free edge of the warp is 8 mm.
And (3) sequentially passing the woven ribbon-shaped fabric through a treatment tank with 20% of mildew-proof liquid solid content, a drying hot roller at 200 ℃, a treatment tank with 20% of waterproof treatment liquid solid content and a drying hot roller at 200 ℃ at the speed of 5m/min, and cooling to room temperature to obtain the flat ribbon-shaped fabric.
The above ribbon-like fabric was passed through a winding device at 250 c at a speed of 7m/min, and after cooling to room temperature, a self-wound shielding sleeve was obtained in which the overlapping portion occupied an angle of 120 degrees on the circumference of the sleeve.
The casing obtained in example 2 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 3
The warp yarns are combined by 4 strands of polybenzoxazole long fibers and the covering yarns of aluminum-magnesium yarns in constant tension, the multifilament linear density of the polybenzoxazole long fibers is 1000D, the diameter of the aluminum-magnesium yarns is 0.3mm, and the number of the aluminum-magnesium yarns is 2.
The weft yarn is 1 thermoplastic polyimide long fiber monofilament with the monofilament diameter of 0.35mm, the other strand is core spun yarn of polybenzoxazole long fiber and aluminum magnesium fiber, the multifilament linear density of the polybenzoxazole long fiber is 1000D, the diameter of the aluminum magnesium fiber is 0.3mm, and the number of the aluminum magnesium fibers is 2. The weaving density of the warp is 30 strands/inch, the weaving density of the weft is 20 strands/inch, the weft is woven into a plain weave belt-shaped structure of warp and weft, meanwhile, a free edge along the warp direction is woven with 2 strands of white aramid fiber long fibers to form a mark line with the maximum use diameter, and the shortest distance between the mark line and the free edge of the warp is 10 mm.
And (3) sequentially passing the woven ribbon-shaped fabric through a treatment tank with 15% of mildew-proof liquid solid content, a drying hot roller at 250 ℃, a treatment tank with 20% of waterproof treatment liquid solid content and a drying hot roller at 250 ℃ at the speed of 3m/min, and cooling to room temperature to obtain the flat ribbon-shaped fabric.
The above ribbon-like fabric was passed through a 320 c winding device at a speed of 9m/min, and after cooling to room temperature, a self-wound shielding sleeve was obtained in which the overlapping portion occupied an angle of 360 degrees on the circumference of the sleeve.
The casing obtained in example 3 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 4
The warp yarns are combined by 6 strands of polyimide long fibers and the constant tension of the core-spun yarns of the tinned copper wires, the multifilament linear density of the polyimide long fibers is 1200D, the diameter of each tinned copper wire is 0.5mm, and the number of the tinned copper wires is 2.
The weft yarns are 1 thermoplastic polyimide long fiber monofilament with the monofilament diameter of 0.20mm, the other strand is core-spun yarns of the polyimide long fibers and the tinned copper wires, the multifilament linear density of the polyimide long fibers is 1200D, the diameter of the tinned copper wires is 0.5mm, and the number of the tinned copper wires is 2. The weaving density of the warp is 30 strands/inch, the weaving density of the weft is 20 strands/inch, the weft is woven into a plain weave belt-shaped structure of warp and weft, meanwhile, a free edge along the warp direction is woven with 2 strands of white aramid fiber long fibers to form a mark line with the maximum use diameter, and the shortest distance between the mark line and the free edge of the warp is 10 mm.
And (3) sequentially passing the woven ribbon-shaped fabric through a treatment tank with 50% of mildew-proof liquid solid content, a drying hot roller at 250 ℃, a treatment tank with 50% of waterproof treatment liquid solid content and a drying hot roller at 250 ℃ at the speed of 9m/min, and cooling to room temperature to obtain the flat ribbon-shaped fabric.
The above ribbon-like fabric was passed through a 320 c winding device at a speed of 9m/min, and after cooling to room temperature, a self-wound shielding sleeve was obtained in which the overlapping portion occupied an angle of 360 degrees on the circumference of the sleeve.
The casing obtained in example 4 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 5
The warps are combined by 4 tinned copper foil wires with constant tension, the width of the tinned copper foil wires is 0.3mm, and the thickness of the tinned copper foil wires is 0.08 mm.
The weft yarns are 3 thermoplastic polyimide long fiber monofilaments with the monofilament diameter of 0.30mm, the other strand is core-spun yarns of the polyimide long fibers and the tinned copper foil yarns, the multifilament linear density of the polyimide long fibers is 500D, the width of the tinned copper foil yarns is 0.3mm, the thickness of the tinned copper foil yarns is 0.08mm, and the number of the multifilament yarns is 4. The weaving density of the warp is 30 strands/inch, the weaving density of the weft is 20 strands/inch, the weft is woven into a plain weave belt-shaped structure of warp and weft, meanwhile, a free edge along the warp direction is woven with 2 strands of white aramid fiber long fibers to form a mark line with the maximum use diameter, and the shortest distance between the mark line and the free edge of the warp is 10 mm.
And (3) sequentially passing the woven ribbon-shaped fabric through a treatment tank with 30% of mildew-proof liquid solid content, a drying hot roller at 280 ℃, a treatment tank with 30% of waterproof treatment liquid solid content and a drying hot roller at 280 ℃ at the speed of 8m/min, and cooling to room temperature to obtain the flat ribbon-shaped fabric.
The above ribbon-like fabric was passed through a 320 c winding device at a speed of 6m/min, and after cooling to room temperature, a self-wound shielding sleeve was obtained in which the overlapping portion occupied an angle of 360 degrees on the circumference of the sleeve.
The casing obtained in example 5 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 6
The warps are combined by 10 tinned copper wires with constant tension, and the diameter of each tinned copper wire is 0.1 mm.
The weft yarns are 1 polyether-ether-ketone long fiber monofilament with the monofilament diameter of 0.45mm, the other strand is core-spun yarns of aramid long fibers and tinned copper wires, the multifilament linear density of the aramid long fibers is 1100D, the diameter of the tinned copper wires is 0.3mm, and the number of the tinned copper wires is 3. The weaving density of the warp is 30 strands/inch, the weaving density of the weft is 20 strands/inch, the twill woven into the warp and the weft is woven into a belt-shaped structure, meanwhile, a free edge along the warp direction is woven with 2 strands of yellow polyimide long fibers to form a mark line with the maximum using diameter, and the shortest distance between the mark line and the free edge of the warp is 7 mm.
And (3) sequentially passing the woven ribbon-shaped fabric through a treatment tank with 50% of mildew-proof liquid solid content, a drying hot roller at 250 ℃, a treatment tank with 50% of waterproof treatment liquid solid content and a drying hot roller at 250 ℃ at the speed of 9m/min, and cooling to room temperature to obtain the flat ribbon-shaped fabric.
The above-mentioned tape fabric was passed through a winding device at 290 ℃ at a speed of 6m/min, and after cooling to room temperature, a self-wound shielding sleeve was obtained in which the overlapping portion occupied an angle of 90 degrees on the circumference of the sleeve.
The sleeve obtained in example 6 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 7
The warps are combined by 10 tinned copper wires with constant tension, and the diameter of each tinned copper wire is 0.1 mm.
The weft yarns are 2 polyether-ether-ketone long fiber monofilaments with the monofilament diameter of 0.25mm, the other strand is core-spun yarns of aramid long fibers and tinned copper wires, the multifilament linear density of the aramid long fibers is 1100D, the diameter of the tinned copper wires is 0.3mm, and the number of the tinned copper wires is 3. The weaving density of the warp is 30 strands/inch, the weaving density of the weft is 20 strands/inch, the twill woven into the warp and the weft is woven into a belt-shaped structure, meanwhile, a free edge along the warp direction is woven with 2 strands of yellow polyimide long fibers to form a mark line with the maximum using diameter, and the shortest distance between the mark line and the free edge of the warp is 7 mm.
And (3) sequentially passing the woven ribbon-shaped fabric through a treatment tank with 50% of mildew-proof liquid solid content, a drying hot roller at 250 ℃, a treatment tank with 50% of waterproof treatment liquid solid content and a drying hot roller at 250 ℃ at the speed of 9m/min, and cooling to room temperature to obtain the flat ribbon-shaped fabric.
The above-mentioned tape fabric was passed through a winding device at 290 ℃ at a speed of 6m/min, and after cooling to room temperature, a self-wound shielding sleeve was obtained in which the overlapping portion occupied an angle of 90 degrees on the circumference of the sleeve.
The sleeve obtained in example 7 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 8
This is done in substantially the same manner as in example 1, except that the first and second metal wires, which are the same in material, diameter and amount, are used directly for weaving rather than in the form of a core spun yarn.
The sleeve obtained in example 8 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 9
This was carried out in substantially the same manner as in example 6, except that a metal mesh woven from metal wires of which the material, diameter and total mass were the same as the sum of the second metal wires and the third metal wires in example 6 was used in place of the second metal wires and the third metal wires. The sleeve obtained in example 9 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Examples 10 to 11
The procedure was carried out in substantially the same manner as in example 1, except that in examples 10 and 11, polyimide fibers having a multifilament linear density of 50D and 4000D, respectively, were used as the first organic fibers. The sleeves obtained in examples 10 and 11 were tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Example 12
This was carried out in substantially the same manner as in example 1, except that the first wire and the second wire used in example 1 were replaced with stainless steel wires. The sleeve obtained in example 12 was tested according to the test method used in example 1, and the specific test conditions and test results are shown in table 2.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (32)
1. A self-rolling type shielding sleeve is characterized in that:
the self-rolling shielding sleeve is made by rolling and shaping a sheet-shaped woven fabric;
said woven fabric having first and second opposite free edges extending along a longitudinal axis of said sleeve and being self-curled in a curled condition in which said first and second free edges overlap one another in the absence of an external force, said first and second free edges being transformable from said overlapped curled condition to an open condition in which they are spaced apart from one another by the application of an external force, and said first and second free edges returning to said curled condition upon removal of the external force;
the woven fabric is prepared by warp and weft through warp and weft weaving;
the warp yarn is (a) a first core spun yarn comprising a first organic fiber and a first metal wire and/or (b) a metal wire ply formed from a third metal wire;
the weft yarns comprise (c) a second core-spun yarn comprising second organic fibers and second metal filaments and (d) thermoplastic organic fibers;
at least one of the first organic fiber, the second organic fiber, and the thermoplastic organic fiber comprises a polyimide fiber.
2. The self-rolling shielding sleeve according to claim 1, wherein:
the first organic fiber and the second organic fiber are the same as or different from each other;
the first metal wire, the second metal wire and the third metal wire are the same or different in pairs; and/or
The first core-spun yarn and the second core-spun yarn are the same as or different from each other.
3. The self-rolling shielding sleeve according to claim 1, wherein:
the first organic fiber and/or the second organic fiber are independently a multifilament fiber; and/or
The thermoplastic organic fibers are monofilament fibers.
4. The self-rolling shielding sleeve according to claim 3, wherein:
the multifilament fibers have a multifilament linear density of 100D to 3000D and/or a strand count of 1 to 10 strands.
5. The self-rolling shielding sleeve according to claim 4, wherein:
the multifilament fiber has a multifilament linear density of 500D to 1500D.
6. The self-rolling shielding sleeve according to claim 3, wherein:
the first organic fiber and/or the second organic fiber is selected from the group consisting of polyimide fibers, aramid fibers, polybenzoxazole fibers.
7. The self-rolling shielding sleeve according to claim 3, wherein:
the monofilament fiber has a monofilament diameter of 0.10mm to 1.00 mm.
8. The self-rolling shielding sleeve according to claim 3, wherein:
the number of the thermoplastic organic fibers is 1 to 10.
9. The self-rolling shielding sleeve according to claim 3, wherein:
the thermoplastic organic fiber is selected from the group consisting of polyphenylene ether fiber, polyphenylene sulfide fiber, polyether ether ketone fiber, polyethylene fiber, polypropylene fiber, thermoplastic polyimide fiber, nylon fiber, and polyester fiber.
10. The self-rolling shielding sleeve according to any one of claims 1 to 9, wherein:
the cross sections of the first metal wire, the second metal wire and the third metal wire are circular or rectangular; the diameters of the first, second and third wires of circular cross-section are independently 0.01mm to 1.0 mm; the first, second and third wires of rectangular cross section have a width of 0.05mm to 0.50mm and a thickness of 0.01mm to 0.20 mm.
11. The self-rolling shielding sleeve according to any one of claims 1 to 9, wherein:
the number of the first metal wire and the number of the second metal wire are independently 1 to 5, and the number of the third metal wire is 3 to 15.
12. The self-rolling shielding sleeve according to any one of claims 1 to 9, wherein:
the first, second, and third wires are independently alloy wires.
13. The self-rolling shielding sleeve according to any one of claims 1 to 9, wherein:
the first, second and third metal wires are independently alloy wires selected from the group consisting of tin-plated copper wires, stainless steel wires and aluminum magnesium wires.
14. The self-rolling shielding sleeve according to any one of claims 1 to 9, wherein:
the first, second and third wires are independently tinned copper foil wires.
15. The self-rolling shielding sleeve according to any one of claims 1 to 9, wherein:
the first organic fibers are non-thermoplastic organic fibers and the second organic fibers are thermoplastic organic fibers.
16. The self-rolling shielding sleeve according to any one of claims 1 to 9, wherein:
the warp yarns have a weave density of 10 to 60 strands per inch; and/or
The weft yarns have a weave density of 10 to 50 yarns/inch.
17. The self-rolling shielding sleeve according to claim 15, wherein:
the warp yarns have a weave density of 20 to 40 strands per inch; and/or
The weft yarns have a weave density of 15 to 30 yarns/inch.
18. The self-rolling shielding sleeve according to claim 1, wherein:
the woven fabric is woven with a maximum diameter marker thread for use after crimping into a sleeve, the maximum diameter marker thread being formed from fibers having a color that is distinct from non-marker thread regions on the woven fabric.
19. The self-rolling shielding sleeve according to claim 1, wherein:
the woven fabric is of a plain weave structure or a twill weave structure with staggered warps and wefts; and/or
The mutually overlapping portions occupy an angle theta of 2 to 360 degrees on the circumference of the sleeve.
20. A method of manufacturing a self-rolling shielding sleeve according to any one of claims 1 to 19, characterized in that the method comprises the steps of:
(1) providing the woven fabric;
(2) and (3) curling the woven fabric at the plasticizing temperature of the thermoplastic organic fibers in the weft yarns, and then cooling and setting to obtain the self-rolling type shielding sleeve.
21. The method of claim 20, wherein:
the method also comprises the steps of performing mildew-proof treatment and/or waterproof treatment on the woven fabric after the step (1) and before the step (2) and then drying and ironing.
22. The method of claim 21, wherein:
the mildew-proof treatment is carried out by adopting mildew-proof treatment liquid.
23. The method of claim 22, wherein:
the solid content of the mildewproof treatment liquid is 5 to 50 percent by weight.
24. The method of claim 21, wherein:
the waterproof treatment is carried out by adopting waterproof treatment liquid.
25. The method of claim 24, wherein:
the solid content of the water repellent treatment liquid is 20 to 50% by weight.
26. The method of claim 23, wherein:
the speed of the woven fabric passing through the mildew-proof treatment liquid is 2-10 m/min.
27. The method of claim 24, wherein:
the speed of the woven fabric passing through the waterproof treatment liquid is 2 m/min to 10 m/min.
28. The method of claim 21, wherein:
the drying temperature is 50 to 350 DEG oC。
29. The method of claim 21, wherein:
the ironing is carried out by a high-temperature hot roller, and the temperature of the hot roller is 200-300 ℃; the speed of passage over the hot rolls is from 2 to 10 m/min.
30. The method of claim 21, wherein:
the shaping is carried out by: the woven fabric is heated and then cooled after being wound into a roll using a winding device.
31. The method of claim 30, wherein:
the heating temperature is 50 to 350 DEGoC。
32. The method of claim 30, wherein:
the speed of the woven fabric through the packaging device is from 2 m/min to 10 m/min.
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