High-temperature-resistant tensile curled cable for mobile equipment

Abstract

The invention discloses a high-temperature-resistant tensile curly cable for mobile equipment, which comprises insulated wire cores, a steel wire reinforced core, an inner sheath, a tensile reinforced layer and an outer sheath, and is characterized in that the plurality of insulated wire cores surround the steel wire reinforced core to form a cable core; the inner sheath, the tensile reinforcing layer and the outer sheath are sequentially arranged outside the cable core from inside to outside, both the inner sheath and the outer sheath are formed by extruding chlorinated polyethylene sheath rubber compound materials, and the tensile strength of the inner sheath and the outer sheath is larger than or equal to 15 MPa. The cable has the excellent performance of high flexibility, high temperature resistance, repeated curling and the like, can be used for a long time in a special operation environment, is long in service life, and avoids frequent replacement of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of cables, and in particular to a high temperature resistant and tensile resistant curled cable for mobile equipment. Background Art

[0002] As the main raw material for producing photovoltaic material polysilicon, industrial silicon has experienced rapid development along with the development of the photovoltaic industry. In the process of industrial silicon smelting, there is an important equipment called a ramming machine. The cable that powers the ramming machine needs to be frequently stretched and wound in a high temperature environment due to its special operating environment. There is also a weight of about 200kg on the take-up reel to rotate the take-up reel to recycle the cable, so this cable is in a stretched state for a long time. In this case, the service life of the cable is often short. According to feedback from relevant companies, if the cable is often used for a period of one week to three months, the cable will be missing, bulging, sheath cracking, twisting and deformation, etc. Therefore, it is particularly important to develop a high temperature resistant, tensile and curling cable to meet the needs of the above-mentioned special use environment. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a high-temperature resistant and tensile-resistant curled cable for mobile devices in view of the above-mentioned deficiencies in the prior art. The cable has excellent properties such as high flexibility, high temperature resistance, and repeated curling. It can be used for a long time in special operating environments and has a long service life, avoiding frequent cable replacement.

[0004] The technical solution adopted to solve the technical problem of the present invention is as follows:

[0005] A high temperature resistant tensile-resistant curled cable for mobile equipment comprises an insulating core, a steel wire reinforcement core, an inner sheath, a tensile reinforcement layer and an outer sheath. A plurality of insulating cores are wrapped around the steel wire reinforcement core to form a cable core. The inner sheath, the tensile reinforcement layer and the outer sheath are sequentially arranged outside the cable core from the inside to the outside. The inner sheath and the outer sheath are both extruded from a chlorinated polyethylene sheath mixed rubber material, and the tensile strength thereof is ≥15MPa.

[0006] Preferably, the chlorinated polyethylene sheath rubber compound material comprises the following components in parts by weight:

[0007] 40-45 parts of chlorinated polyethylene powder, 1.5-2.0 parts of DCP vulcanizer, 2-2.5 parts of TAIC crosslinking agent, 0.1-0.3 parts of NA22 accelerator, 0.05-0.15 parts of RD antioxidant, 4-5 parts of magnesium oxide, 1-1.5 parts of paraffin, 8-9 parts of chlorinated paraffin, 13-15 parts of calcium carbonate, 8-9 parts of carbon black, 8-9 parts of semi-reinforcing carbon black, 1-1.5 parts of lead stearate, 0.5-1 parts of acid salt, 2-3 parts of dioctyl phthalate, and 3-4 parts of antimony trioxide.

[0008] Preferably, the insulating core comprises a conductive core and a first insulating layer, wherein the first insulating layer is arranged outside the conductive core, and the first insulating layer is ethylene propylene rubber insulation with a tensile strength of ≥8 MPa.

[0009] Preferably, the conductive core is formed by bundling and then twisting a plurality of copper wires or tinned copper wires.

[0010] Preferably, the elongation of a single copper wire and a tinned copper wire is controlled to be 25±2%.

[0011] Preferably, the steel wire reinforcement core is coated with a second insulation layer, and the second insulation layer is polypropylene insulation.

[0012] Preferably, the tensile reinforcement layer is tensile fiber, which is wrapped around the inner sheath in a woven manner, and the woven density is ≥80%.

[0013] Preferably, the cable further comprises a filling layer, wherein the filling layer is arranged in the gap between the steel wire reinforcement core and the insulating core, and in the gap between the insulating core and the inner sheath.

[0014] Beneficial effects:

[0015] Compared with the prior art, the high-temperature resistant and tensile-resistant curled cable for mobile devices of the present invention has excellent properties such as high flexibility, high-temperature resistance, repeated curling, and tensile resistance. It can be used for a long time in special operating environments, and can effectively ensure that the cable will not be twisted, deformed, or locally bulged during repeated curling. It has a long service life of at least six months, avoiding frequent cable replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The present invention is a schematic structural diagram of a high temperature resistant and tensile resistant curled cable for mobile equipment according to an embodiment of the present invention.

[0017] In the figure: 1-conductive core; 2-first insulating layer; 3-steel wire reinforcement core; 4-filling layer; 5-inner sheath; 6-reinforcement layer; 7-outer sheath; 8-second insulating layer. DETAILED DESCRIPTION

[0018] The following will be combined with the accompanying drawings in the present invention to clearly and completely describe the technical solutions in the invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of the present invention.

[0019] In the description of the present invention, it should be noted that the directions or positional relationships indicated by “upper” and the like are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience and simplification of the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "connect", "set", "install", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] Example 1

[0023] like Figure 1 As shown, this embodiment discloses a high temperature resistant tensile curly cable for mobile equipment (such as a furnace tamping machine), comprising an insulating core, a steel wire reinforcement core 3, an inner sheath 5, a tensile reinforcement layer 6, and an outer sheath 7, wherein:

[0024] A plurality of insulating cores are surrounded by the upper steel wire reinforcement core 3 to form a cable core. That is, the steel wire reinforcement core 3 is located at the center between the plurality of insulating cores. The provision of the steel wire reinforcement core 3 can effectively improve the tensile performance of the cable and ensure that the cable has sufficient tensile strength.

[0025] The inner sheath 5, the tensile reinforcement layer 6, and the outer sheath 7 are sequentially arranged outside the cable core from the inside to the outside, wherein the inner sheath 5 and the outer sheath 7 are both formed by extrusion of a chlorinated polyethylene sheath compound rubber material. The double-layer sheath structure composed of the inner sheath and the outer sheath can ensure the tension of the cable without reducing the overall thickness of the sheath. During repeated bending, slight slippage can occur between the two layers of the sheath to prevent the sheath from being cracked due to excessive tension locally. The chlorinated polyethylene sheath compound rubber material has excellent properties such as high temperature resistance and wear resistance, with a tensile strength of ≥15MPa and a tear strength of ≥7N / mm. It can effectively ensure the regularity of the cable insulation core during repeated curling of the cable under special operating environments such as high temperature, and avoid distortion, deformation, bulging, and the like.

[0026] Specifically, the chlorinated polyethylene sheath rubber compound material comprises the following components in parts by weight:

[0027] 40-45 parts of chlorinated polyethylene powder (chlorine content 35%), DCP vulcanizing agent (i.e. diisopropylbenzene peroxide, chemical formula: C 18 H 22 O2) 1.5-2.0 parts, TAIC crosslinking agent (i.e. triallyl isocyanurate, chemical formula: C 12 H 15 N3O3) 2-2.5 parts, NA22 accelerator (i.e. ethylene thiourea, chemical formula: C3H6N2S) 0.1-0.3 parts, RD antioxidant 0.05-0.15 parts, magnesium oxide 4-5 parts, paraffin 1-1.5 parts, chlorinated paraffin 8-9 parts, calcium carbonate 13-15 parts, carbon black 8-9 parts, semi-reinforced carbon black 8-9 parts, lead stearate 1-1.5 parts, acid salt 0.5-1 parts, dioctyl phthalate 2-3 parts, antimony trioxide 3-4 parts. Among them, by adding carbon black and reinforcing carbon black, the wear resistance of the sheath material can be effectively improved. By selecting DCP vulcanizing agent, TAIC cross-linking agent, and NA22 accelerator to cooperate with the vulcanization of the sheath material, the cable prepared in this way can ensure that the cable can continue to work in a high temperature environment and improve the service life of the cable.

[0028] In this embodiment, the chlorinated polyethylene sheath rubber compound material preferably includes the following components in parts by weight:

[0029] 41 parts of chlorinated polyethylene powder, 1.6 parts of DCP vulcanizer, 2.5 parts of TAIC crosslinking agent, 0.3 parts of NA22 accelerator, 0.1 parts of RD antioxidant, 4 parts of magnesium oxide, 1 part of paraffin, 9 parts of chlorinated paraffin, 13 parts of calcium carbonate, 9 parts of carbon black, 9 parts of semi-reinforcing carbon black, 1.5 parts of lead stearate, 1 part of acid salt, 3 parts of dioctyl phthalate, and 4 parts of antimony trioxide.

[0030] The method for preparing the chlorinated polyethylene sheath rubber compound material comprises the following steps:

[0031] 1) Mix chlorinated polyethylene powder, DCP vulcanizer, TAIC crosslinking agent, NA22 accelerator, RD antioxidant, magnesium oxide, paraffin, chlorinated paraffin, calcium carbonate, carbon black, semi-reinforced carbon black, lead stearate, acid salt, dioctyl phthalate and antimony trioxide, and add them into an internal mixer;

[0032] 2) Stir for 15 to 20 minutes to ensure uniform mixing, then add to the open mill for primary mixing. The pressure during the primary mixing is controlled at 2 to 2.3 MPa and the temperature is controlled at 80 to 85°C to ensure that the rubber can be wrapped on the roller of the open mill. The time is controlled at 15 to 20 minutes;

[0033] 3) Then, the temperature is increased to 110-115°C within 20-25 minutes, and the pressure is increased to 10-12 MPa, and secondary mixing is performed. The time of the secondary mixing is controlled to be 7-8 minutes. The rubber compound obtained after the secondary mixing is the chlorinated polyethylene sheath mixed rubber material;

[0034] 4) The rubber compound after the secondary mixing is put into a calender to be made into a thin sheet, which is then extruded into an inner sheath and an outer sheath.

[0035] In the process of using the chlorinated polyethylene sheath rubber compound material to extrude the inner sheath 5 and the outer sheath 7, the extrusion temperature of the extruder head is controlled at 70-85°C, the steam pressure of the vulcanization pipeline is controlled at 0.9MPa, the temperature is controlled at 170-180°C, and the inner sheath and the outer sheath are extruded to ensure that the chlorinated polyethylene sheath rubber compound material can be fully vulcanized to obtain the designed performance.

[0036] In this embodiment, the thickness of the inner sheath 5 is 2.5-2.8 mm, and the thickness of the outer sheath 7 is 3.5-3.8 mm.

[0037] In some embodiments, the insulating core includes a conductive core 1 and a first insulating layer 2, wherein the first insulating layer 2 is disposed outside the conductive core 1, the first insulating layer 2 is EPDM rubber insulation, and its tensile strength is ≥8MPa. The thickness of the first insulating layer 2 is 2.6 to 3.0 mm to further improve the tensile performance of the cable.

[0038] In some more specific embodiments, the conductive core 1 adopts a category 5 or 6 super-soft conductor structure, which is formed by bundling and twisting multiple strands of copper wires or tinned copper wires, wherein the single elongation of the copper wire and the tinned copper wire is controlled to be 25±2% to ensure the repeated curling performance of the cable.

[0039] In this embodiment, the number of the conductive cores is three.

[0040] In some embodiments, the steel wire reinforcement core 3 is coated with a second insulating layer 8, and the second insulating layer 8 is polypropylene insulation to prevent the steel wire reinforcement core from damaging the insulating core during repeated bending of the cable.

[0041] In some embodiments, the tensile reinforcement layer 6 is a tensile fiber, preferably a Kevlar tensile fiber or an aramid fiber, which is woven and wrapped around the inner sheath 5, and its weaving density is not less than 80% (i.e. ≥80%), preferably not less than 85%, so as to further improve the tensile performance of the cable. At the same time, it can also wrap the inner sheath well to ensure that no local bulging occurs during repeated curling of the cable.

[0042] In some embodiments, Figure 1 As shown, the cable of this embodiment further includes a filling layer 4, which is arranged in the gap between the steel wire reinforcement core 3 and the insulating core, and in the gap between the insulating core and the inner sheath 5 to ensure the roundness of the cable core.

[0043] Compared with the prior art, the high-temperature resistant and tensile-resistant curled cable for mobile devices of this embodiment has excellent properties such as high flexibility, high-temperature resistance, repeated curling, and tensile resistance. It can be used for a long time in special operating environments, and can effectively ensure that the cable will not be twisted, deformed, or locally bulged during repeated curling. It has a long service life of at least six months, avoiding frequent cable replacement.

[0044] Example 2

[0045] This embodiment discloses a high temperature resistant tensile curly cable for mobile equipment (such as a furnace pounding machine). Compared with the embodiment 1, the difference is that the chlorinated polyethylene sheath rubber compound material includes the following components in parts by weight:

[0046] 45 parts of chlorinated polyethylene powder, 1.8 parts of DCP vulcanizer, 2 parts of TAIC crosslinking agent, 0.2 parts of NA22 accelerator, 5 parts of magnesium oxide, 1 part of paraffin, 8 parts of chlorinated paraffin, 14 parts of calcium carbonate, 8 parts of carbon black, 8 parts of semi-reinforcing carbon black, 1.5 parts of lead stearate, 0.5 parts of acid salt, 2 parts of dioctyl phthalate, and 3 parts of antimony trioxide.

[0047] Example 3

[0048] This embodiment discloses a high temperature resistant tensile curly cable for mobile equipment (such as a furnace pounding machine). Compared with the embodiment 1, the difference is that the chlorinated polyethylene sheath rubber compound material includes the following components in parts by weight:

[0049] 43 parts of chlorinated polyethylene powder, 1.5 parts of DCP vulcanizer, 2 parts of TAIC crosslinking agent, 0.3 parts of NA22 accelerator, 0.1 parts of RD antioxidant, 5 parts of magnesium oxide, 1.5 parts of paraffin, 9 parts of chlorinated paraffin, 15 parts of calcium carbonate, 8 parts of carbon black, 8 parts of semi-reinforcing carbon black, 1 part of lead stearate, 0.6 parts of acid salt, 2 parts of dioctyl phthalate, and 3 parts of antimony trioxide.

[0050] Comparative Example

[0051] This embodiment provides a cable. Compared with Embodiment 1, the difference is that the chlorinated polyethylene sheath compound rubber in the cable of this embodiment includes the following components in parts by weight:

[0052] 45 parts of chlorinated polyethylene powder, 2 parts of DCP vulcanizer, 2.5 parts of TAIC crosslinking agent, 0.3 parts of NA22 accelerator, 0.2 parts of RD antioxidant, 5 parts of magnesium oxide, 1.5 parts of paraffin, 9 parts of chlorinated paraffin, 15 parts of calcium carbonate, 10 parts of carbon black, 1.5 parts of lead stearate, 1 part of acid salt, 3 parts of dioctyl phthalate, and 4 parts of antimony trioxide.

[0053] The chlorinated polyethylene sheathed rubber compound materials and high temperature tensile-resistant curled cables for mobile devices in Examples 1-3 and the chlorinated polyethylene sheathed rubber compound and cables in the comparative example were subjected to tensile and aging performance tests under the same conditions. Compared with the comparative example, Examples 1-3 have higher tensile strength, stronger aging resistance, and can work in high temperature environments for a long time without cracking.

[0054] It is to be understood that the above is only a preferred embodiment of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered as the protection scope of the present invention.

Claims

1. A high temperature resistant and tensile curly cable for mobile equipment, characterized in that: It comprises an insulating wire core, a steel wire reinforcement core (3), an inner sheath (5), a tensile reinforcement layer (6), and an outer sheath (7). A plurality of insulating wire cores are wrapped around the steel wire reinforcement core to form a cable core; The inner sheath, the tensile reinforcement layer and the outer sheath are sequentially arranged outside the cable core from the inside to the outside, wherein the inner sheath and the outer sheath are both extruded from chlorinated polyethylene sheath mixed rubber material, and the tensile strength thereof is ≥15MPa.

2. The high temperature resistant and tensile resistant curled cable for mobile devices according to claim 1, characterized in that: The chlorinated polyethylene sheath rubber compound material comprises the following components in parts by weight: 40-45 parts of chlorinated polyethylene powder, 1.5-2.0 parts of DCP vulcanizer, 2-2.5 parts of TAIC crosslinking agent, 0.1-0.3 parts of NA22 accelerator, 0.05-0.15 parts of RD antioxidant, 4-5 parts of magnesium oxide, 1-1.5 parts of paraffin, 8-9 parts of chlorinated paraffin, 13-15 parts of calcium carbonate, 8-9 parts of carbon black, 8-9 parts of semi-reinforcing carbon black, 1-1.5 parts of lead stearate, 0.5-1 parts of acid salt, 2-3 parts of dioctyl phthalate, and 3-4 parts of antimony trioxide.

3. The high temperature resistant and tensile resistant curled cable for mobile devices according to claim 1, characterized in that: The insulating wire core comprises a conductive wire core (1), a first insulating layer (2), The first insulating layer is arranged outside the conductive wire core, and the first insulating layer is ethylene propylene rubber insulation, and its tensile strength is ≥8MPa.

4. The high temperature resistant and tensile resistant curled cable for mobile devices according to claim 3, characterized in that: The conductive wire core (1) is formed by bundling and then twisting a plurality of copper wires or tinned copper wires.

5. The high temperature resistant and tensile resistant curled cable for mobile devices according to claim 4, characterized in that: The single elongation of copper wire and tinned copper wire is controlled to be 25±2%.

6. The high temperature resistant and tensile resistant curled cable for mobile devices according to claim 3, characterized in that: The steel wire reinforcement core is coated with a second insulation layer (8), and the second insulation layer is polypropylene insulation.

7. The high temperature resistant and tensile resistant curled cable for mobile devices according to claim 3, characterized in that: The tensile reinforcement layer (6) is tensile fiber, which is wrapped around the inner sheath in a woven manner, and its woven density is ≥80%.

8. The high temperature resistant and tensile resistant curled cable for mobile devices according to any one of claims 1 to 7, characterized in that: The cable further comprises a filling layer (4), The filling layer is arranged in the gap between the steel wire reinforcement core and the insulating core, and in the gap between the insulating core and the inner sheath.

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