Acid-resistant and wear-resistant cable sheath material, preparation method thereof and acid-resistant and wear-resistant flat cable

Abstract

The invention discloses an acid-resistant and wear-resistant cable sheath material, a preparation method thereof and an acid-resistant and wear-resistant flat cable. The raw material formula of the acid-resistant and wear-resistant cable sheath material comprises 100 parts of chlorinated polyethylene rubber; 5-10 parts of an acid-base regulator; 5-10 parts of a stabilizer; 3-5 parts of a lubricant; 90 to 120 parts of a filling agent; 5-10 parts of a flame retardant; 1.5 to 3 parts of a main cross-linking agent; 0.5 to 1.5 parts of a cross-linking promoting agent; 1-2 parts of an anti-aging agent; 15-25 parts of a plasticizer; and 3-5 parts of pigment and filler. According to the acid-resistant and wear-resistant cable sheath material, the preparation method thereof and the acid-resistant and wear-resistant flat cable provided by the invention, the formula of the sheath material is improved around the cable use environment, the cable can be used under the acid-resistant and wear-resistant conditions, and meanwhile, the cable adopts a category 5 tinned soft copper conductor, so that the flexibility of the cable is guaranteed, and the cable is convenient to lay.

Description

Technical Field

[0001] The invention belongs to the technical field of cable production, and specifically relates to an acid-resistant and wear-resistant cable sheath material and a preparation method thereof, and an acid-resistant and wear-resistant flat cable. Background Art

[0002] On July 21, 2023, the National Conference on High-Quality Development of Uranium Geological Exploration released ten major achievements in uranium exploration. Among them, the newly discovered China's first single thousand-ton super-large sandstone uranium deposit is located in the northeast of the Ordos Basin. The large sandstone uranium deposit, the Hailijin uranium deposit, is located in the southern part of the Songliao Basin. The southern part of the basin is expected to become China's second 100,000-ton uranium resource base; the Telaobao super-large uranium deposit is located in the northern part of the Ordos Basin and is expected to develop into a world-class giant uranium mineralization belt. The structure of the acid-resistant and wear-resistant flat cable is, from the inside to the outside, a (tin-plated) copper conductor, an insulation layer, and a sheath layer. It has at least the following deficiencies. It is difficult to meet the corrosion requirements of the cable caused by frequent dragging and movement on the uranium mine and the acid solution in the mining liquid environment, and the service life of the cable is relatively short. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide an acid-resistant and wear-resistant cable sheath material and a preparation method thereof, and an acid-resistant and wear-resistant flat cable in view of the above-mentioned deficiencies in the prior art. The formula of the sheath material is improved based on the cable use environment to meet the requirements of the cable being used under acid-resistant and wear-resistant conditions.

[0004] The technical solution adopted to solve the technical problem of the present invention is to provide an acid-resistant and wear-resistant cable sheath material, the raw material formula of which includes:

[0005] 100 parts of chlorinated polyethylene rubber;

[0006] 5-10 parts of acid-base regulator;

[0007] 5-10 parts of stabilizer;

[0008] 3-5 parts of lubricant;

[0009] 90-120 parts of filler;

[0010] 5-10 parts of flame retardant;

[0011] 1.5 to 3 parts of main cross-linking agent;

[0012] 0.5-1.5 parts of promoting cross-linking agent;

[0013] 1-2 parts of antioxidant;

[0014] 15-25 parts of plasticizer;

[0015] 3 to 5 parts of pigment and filler.

[0016] Preferably, the chlorine content of the chlorinated polyethylene rubber is 35 mas% to 40 mas%.

[0017] Preferably, the lubricant is one or more of microcrystalline wax, stearic acid, and stearate.

[0018] Preferably, the filler is calcined kaolin and / or precipitated silica.

[0019] Preferably, the flame retardant is antimony trioxide and / or zinc borate.

[0020] Preferably, the primary cross-linking agent is di-tert-butyl dicumyl peroxide and / or dicumyl peroxide.

[0021] Preferably, the crosslinking-promoting agent is N,N'-m-phenylene bismaleimide and / or triallyl isocyanurate.

[0022] Preferably, the cold-resistant plasticizer is any one or more of dioctyl sebacate, dioctyl azelate, dioctyl adipate, and triethylene glycol diisooctanoate.

[0023] Preferably, the pigment filler is any one of macromolecular red, phthalocyanine blue, macromolecular yellow, and medium-pigment carbon black particles.

[0024] Preferably, the acid-base regulator is any one or more of magnesium oxide, zinc oxide, and calcium oxide;

[0025] The stabilizer is any one or more of a calcium-zinc composite stabilizer, a barium-calcium-zinc composite stabilizer, and a rare earth composite stabilizer;

[0026] The antioxidant is any one or more of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, N-(1,3-dimethyl)butyl-N'-phenyl-p-phenylenediamine and 2-mercaptobenzimidazole.

[0027] The present invention provides a method for preparing an acid-resistant and wear-resistant cable sheath material, comprising the following steps:

[0028] Chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler,

[0029] Flame retardant, main cross-linking agent, cross-linking accelerator, antioxidant, plasticizer, pigment and filler are metered and added to the internal mixer in order for mixing and plasticizing. The mixing and plasticizing temperature reaches 110℃~115℃

[0030] Stabilize for 2 to 5 minutes and discharge the material; then start refining at a temperature below 110°C, filter the rubber, and then start refining again.

[0031] Calendering and cooling to below 35° C., slicing, collecting, weighing, and packaging to obtain the acid-resistant and wear-resistant cable sheath material;

[0032] Or chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer and pigment are metered and added to a kneader in order for mixing and plasticating. The mixing and plasticating temperature reaches 110°C to 115°C and is stabilized for 2 to 5 minutes for discharging. Then, the material is plasticated and granulated at 110 to 80°C, cooled to below 35°C, metered and packaged to obtain the acid-resistant and wear-resistant cable sheath material.

[0033] The present invention provides an acid-resistant and wear-resistant flat cable, comprising at least two cable cores and a flat outer sheath arranged outside the cable cores. The cable core comprises: a conductive core, a polyester tape layer arranged outside the conductive core, and an insulating layer arranged outside the polyester tape layer. The sheath material of the outer sheath is the above-mentioned acid-resistant and wear-resistant cable sheath material.

[0034] Preferably, the conductive core is formed by twisting at least two tinned copper monofilaments with a diameter not exceeding 0.51 mm in multiple layers, and the twisted pitch-diameter ratio is not more than 25 times.

[0035] Preferably, the conductive core is made of Category 5 tinned soft copper conductor.

[0036] Preferably, the insulating layer is made of mixed rubber material, and the tensile strength of the insulation is not less than 6N / mm 2 , elongation is not less than 200%; the tensile strength of the sheath is not less than 12N / mm 2 , elongation is not less than 300%.

[0037] Preferably, the thickness of the insulating layer is 0.8-1.0 mm; the thickness of the outer sheath is 2.0-2.5 mm.

[0038] The present invention provides an acid-resistant and wear-resistant cable sheath material and a preparation method thereof, and an acid-resistant and wear-resistant flat cable. The present invention improves the formula of the sheath material based on the cable use environment to meet the use of the cable under acid-resistant and wear-resistant conditions. At the same time, the cable adopts a five-category tinned soft copper conductor to ensure the softness of the cable and facilitate the laying of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic structural diagram of the acid-resistant and wear-resistant flat cable in Example 2 of the present invention.

[0040] In the figure: 1. Conductive core; 2. Polyester tape layer; 3. Insulation layer; 4. Outer sheath. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0044] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

[0045] Example 1

[0046] This embodiment provides an acid-resistant and wear-resistant cable sheath material, the raw material formula of which includes:

[0047] 100 parts of chlorinated polyethylene rubber;

[0048] 5 parts of acid-base regulator;

[0049] Stabilizer 10 parts;

[0050] 3 parts of lubricant;

[0051] Filler 110 parts;

[0052] 8 parts of flame retardant;

[0053] 1.5 parts of main cross-linking agent;

[0054] 1 part of cross-linking agent;

[0055] 2 parts of antioxidant;

[0056] 20 parts of plasticizer;

[0057] 3 parts of color and filler.

[0058] Preferably, the chlorine content of the chlorinated polyethylene rubber is 35 mas %.

[0059] Preferably, the lubricant is a stearate and the lubricant is a viscosity adjusting lubricant.

[0060] Preferably, the filler is calcined kaolin, the filler is an acid and alkali resistant filler, and the calcined kaolin is ultrafine high-temperature calcined kaolin.

[0061] Preferably, the flame retardant is antimony trioxide and zinc borate (mass ratio is 4:1).

[0062] Preferably, the primary cross-linking agent is dicumyl peroxide.

[0063] Preferably, the accelerating crosslinking agent is triallyl isocyanurate.

[0064] Preferably, the cold-resistant plasticizer is dioctyl sebacate and dioctyl azelate (mass ratio is 1:1), and the plasticizer is a cold-resistant plasticizer.

[0065] Preferably, the pigment filler is a macromolecular yellow, and the pigment filler is an acid- and alkali-resistant pigment filler.

[0066] Preferably, the acid-base regulator is magnesium oxide, and the magnesium oxide is highly active magnesium oxide;

[0067] The stabilizer is a calcium-zinc composite stabilizer, and the stabilizer is an environmentally friendly stabilizer;

[0068] The antioxidant is 2,2,4-trimethyl-1,2-dihydroquinoline polymer.

[0069] This embodiment provides a method for preparing an acid-resistant and wear-resistant cable sheath material, comprising the following steps:

[0070] Batching → internal mixing → open mixing → rubber filtering → open mixing → calendering and slicing → collecting → weighing → packaging, specifically:

[0071] Chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer, pigment and filler are metered and added to an internal mixer in order for mixing and plasticating, and the mixing and plasticating temperature reaches 110°C to 115°C and is stabilized for 2 to 5 minutes for discharge; then, the material is mixed and plasticated at a temperature below 110°C, the rubber is filtered, the material is mixed and refined again, and the material is calendered and cooled to below 35°C, and then the material is sliced, collected, weighed and packaged to obtain the acid-resistant and wear-resistant cable sheath material;

[0072] Or batching → kneading → extrusion granulation → cooling and sorting → weighing → packaging, specifically:

[0073] Chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer and pigment are metered and added to a kneader in order for mixing and plasticating. The mixing and plasticating temperature reaches 110°C to 115°C and is stabilized for 2 to 5 minutes for discharging. Then, the material is plasticated and granulated at 110 to 80°C, cooled to below 35°C, metered and packaged to obtain the acid-resistant and wear-resistant cable sheath material.

[0074] The present embodiment provides an acid-resistant and wear-resistant flat cable, comprising at least two cable cores and a flat outer sheath arranged outside the cable cores, the cable core comprising: a conductive core, a polyester tape layer arranged outside the conductive core, and an insulating layer arranged outside the polyester tape layer, wherein the sheath material of the outer sheath is the above-mentioned acid-resistant and wear-resistant cable sheath material.

[0075] Preferably, the conductive core is formed by twisting at least two tinned copper monofilaments with a diameter not exceeding 0.51 mm in multiple layers, and the twisted pitch-diameter ratio is not more than 25 times.

[0076] Preferably, the conductive core is made of Category 5 tinned soft copper conductor.

[0077] Preferably, the insulating layer is made of mixed rubber material, and the tensile strength of the insulation is not less than 6N / mm 2 , elongation is not less than 200%; the tensile strength of the sheath is not less than 12N / mm 2 , elongation is not less than 300%.

[0078] Preferably, the thickness of the insulating layer is 0.8 mm; the thickness of the outer sheath is 2.5 mm.

[0079] Supplement the experimental data corresponding to the beneficial effects of the technical solution of this embodiment.

[0080] The present embodiment provides an acid-resistant and wear-resistant cable sheath material and a preparation method thereof, and an acid-resistant and wear-resistant flat cable. The present embodiment improves the sheath material formula based on the cable use environment to meet the cable's use under acid-resistant and wear-resistant conditions. At the same time, the cable uses Category 5 tinned soft copper conductors to ensure the cable's softness and facilitate cable laying.

[0081] The sheath material in this embodiment is made into a sheath, and the sheath is subjected to a sulfuric acid resistance test. The sulfuric acid resistance test is specifically to immerse the sheath in a sulfuric acid solution with a concentration of 35mas% at 90°C for 24 hours, and then to perform acid-resistant tensile strength and acid-resistant elongation at break tests. The detection method of the inspection items is based on GB / T 2951.11.

[0082]

[0083] Example 2

[0084] This embodiment provides an acid-resistant and wear-resistant cable sheath material, the raw material formula of which includes:

[0085] 100 parts of chlorinated polyethylene rubber;

[0086] 10 parts of acid-base regulator;

[0087] 5 parts of stabilizer;

[0088] 4 parts of lubricant;

[0089] Filler 90 parts;

[0090] Flame retardant 10 parts;

[0091] 2 parts of main cross-linking agent;

[0092] 1.5 parts of promoting cross-linking agent;

[0093] 1.5 parts of antioxidant;

[0094] 25 parts of plasticizer;

[0095] 4 parts of color and filler.

[0096] Preferably, the chlorine content of the chlorinated polyethylene rubber is 38 mas %.

[0097] Preferably, the lubricant is microcrystalline wax and the lubricant is a viscosity adjusting lubricant.

[0098] Preferably, the filler is calcined kaolin and precipitated silica (mass ratio is 3:1), the filler is an acid and alkali resistant filler, and the calcined kaolin is ultrafine high temperature calcined kaolin.

[0099] Preferably, the flame retardant is antimony trioxide.

[0100] Preferably, the primary crosslinking agent is di-tert-butyl dicumyl peroxide.

[0101] Preferably, the cross-linking promoting agent is N,N'-m-phenylene bismaleimide.

[0102] Preferably, the cold-resistant plasticizer is triethylene glycol diisooctanoate, and the plasticizer is a cold-resistant plasticizer.

[0103] Preferably, the pigment is phthalocyanine blue, and the pigment is an acid- and alkali-resistant pigment.

[0104] Preferably, the acid-base regulator is magnesium oxide and zinc oxide (mass ratio 7:3), and the magnesium oxide is highly active magnesium oxide;

[0105] The stabilizer is a barium-calcium-zinc composite stabilizer, and the stabilizer is an environmentally friendly stabilizer;

[0106] The antioxidant is 2,2,4-trimethyl-1,2-dihydroquinoline polymer and 2-mercaptobenzimidazole (mass ratio 2:1).

[0107] This embodiment provides a method for preparing an acid-resistant and wear-resistant cable sheath material, comprising the following steps:

[0108] Mixing ingredients → internal mixing → open mixing → rubber filtering → open mixing → calendering and slicing → collecting slices → weighing → packaging.

[0109] Chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer, pigment and filler are metered and added into internal mixer in order for mixing and plasticating. The mixing and plasticating temperature reaches 110-115°C and stabilizes for 3 minutes for discharging. Then, the material is mixed and plasticated at a temperature below 110°C, the rubber is filtered, the material is mixed again, the material is calendered and cooled to below 35°C, sliced, collected, weighed and packaged, to obtain the acid-resistant and wear-resistant cable sheath material.

[0110] The present embodiment provides an acid-resistant and wear-resistant flat cable, comprising at least two cable cores and a flat outer sheath arranged outside the cable cores, the cable core comprising: a conductive core, a polyester tape layer arranged outside the conductive core, and an insulating layer arranged outside the polyester tape layer, wherein the sheath material of the outer sheath is the above-mentioned acid-resistant and wear-resistant cable sheath material.

[0111] Preferably, the conductive core is formed by twisting at least two tinned copper monofilaments with a diameter not exceeding 0.51 mm in multiple layers, and the twisted pitch-diameter ratio is not more than 25 times.

[0112] Preferably, the conductive core is made of Category 5 tinned soft copper conductor.

[0113] Preferably, the insulating layer is made of mixed rubber material, and the tensile strength of the insulation is not less than 6N / mm 2 , elongation is not less than 200%; the tensile strength of the sheath is not less than 12N / mm 2 , elongation is not less than 300%.

[0114] Preferably, the thickness of the insulating layer is 0.9 mm; the thickness of the outer sheath is 2.3 mm.

[0115] Supplement the experimental data corresponding to the beneficial effects of the technical solution of this embodiment.

[0116] The present embodiment provides an acid-resistant and wear-resistant cable sheath material and a preparation method thereof, and an acid-resistant and wear-resistant flat cable. The present embodiment improves the sheath material formula based on the cable use environment to meet the cable's use under acid-resistant and wear-resistant conditions. At the same time, the cable uses Category 5 tinned soft copper conductors to ensure the cable's softness and facilitate cable laying.

[0117] The sheath material in this embodiment is made into a sheath, and the sheath is subjected to a sulfuric acid resistance test. The sulfuric acid resistance test is specifically to immerse the sheath in a sulfuric acid solution with a concentration of 35mas% at 90°C for 24 hours, and then to perform acid-resistant tensile strength and acid-resistant elongation at break tests. The detection method of the inspection items is based on GB / T 2951.11.

[0118]

[0119]

[0120] Example 3

[0121] This embodiment provides an acid-resistant and wear-resistant cable sheath material, the raw material formula of which includes:

[0122] 100 parts of chlorinated polyethylene rubber;

[0123] 8 parts of acid-base regulator;

[0124] 8 parts of stabilizer;

[0125] 5 parts of lubricant;

[0126] Filler 120 parts;

[0127] 5 parts of flame retardant;

[0128] 3 parts of main cross-linking agent;

[0129] 0.5 part of promoting cross-linking agent;

[0130] 1 part of antioxidant;

[0131] 15 parts of plasticizer;

[0132] 5 parts of color and filler.

[0133] Preferably, the chlorine content of the chlorinated polyethylene rubber is 40 mas %.

[0134] Preferably, the lubricant is stearic acid and stearate (mass ratio is 2:1), and the lubricant is a viscosity regulating lubricant.

[0135] Preferably, the filler is precipitated silica, the filler is an acid and alkali resistant filler, and the calcined kaolin is ultrafine high-temperature calcined kaolin.

[0136] Preferably, the flame retardant is zinc borate.

[0137] Preferably, the main cross-linking agent is di-tert-butyl dicumyl peroxide and dicumyl peroxide (mass ratio is 2:1).

[0138] Preferably, the cross-linking promoting agent is N,N'-m-phenylene bismaleimide and triallyl isocyanurate (mass ratio is 2:1).

[0139] Preferably, the cold-resistant plasticizer is dioctyl adipate.

[0140] Preferably, the pigment is a macromolecular red and the pigment filler is an acid- and alkali-resistant pigment filler.

[0141] Preferably, the acid-base regulator is calcium oxide;

[0142] The stabilizer is a rare earth composite stabilizer, and the stabilizer is an environmentally friendly stabilizer;

[0143] The antioxidant is 2,2,4-trimethyl-1,2-dihydroquinoline polymer and 2-mercaptobenzimidazole (mass ratio 1:1).

[0144] This embodiment provides a method for preparing an acid-resistant and wear-resistant cable sheath material, comprising the following steps:

[0145] Mixing ingredients → internal mixing → open mixing → rubber filtering → open mixing → calendering and slicing → collecting slices → weighing → packaging.

[0146] Chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer, pigment and filler are metered and added into internal mixer in order for mixing and plasticating. The mixing and plasticating temperature reaches 110-115°C and stabilizes for 3 minutes for discharging. Then, the material is mixed and plasticated at a temperature below 110°C, the rubber is filtered, the material is mixed again, the material is calendered and cooled to below 35°C, sliced, collected, weighed and packaged, to obtain the acid-resistant and wear-resistant cable sheath material.

[0147] The present embodiment provides an acid-resistant and wear-resistant flat cable, comprising at least two cable cores and a flat outer sheath arranged outside the cable cores, the cable core comprising: a conductive core, a polyester tape layer arranged outside the conductive core, and an insulating layer arranged outside the polyester tape layer, wherein the sheath material of the outer sheath is the above-mentioned acid-resistant and wear-resistant cable sheath material.

[0148] Preferably, the conductive core is formed by twisting at least two tinned copper monofilaments with a diameter not exceeding 0.51 mm in multiple layers, and the twisted pitch-diameter ratio is not more than 25 times.

[0149] Preferably, the conductive core is made of Category 5 tinned soft copper conductor.

[0150] Preferably, the insulating layer is made of mixed rubber material, and the tensile strength of the insulation is not less than 6N / mm 2 , elongation is not less than 200%; the tensile strength of the sheath is not less than 12N / mm 2 , elongation is not less than 300%.

[0151] Preferably, the thickness of the insulating layer is 1.0 mm; the thickness of the outer sheath is 2.0 mm.

[0152] Supplement the experimental data corresponding to the beneficial effects of the technical solution of this embodiment.

[0153] The present embodiment provides an acid-resistant and wear-resistant cable sheath material and a preparation method thereof, and an acid-resistant and wear-resistant flat cable. The present embodiment improves the sheath material formula based on the cable use environment to meet the cable's use under acid-resistant and wear-resistant conditions. At the same time, the cable uses Category 5 tinned soft copper conductors to ensure the cable's softness and facilitate cable laying.

[0154] The sheath material in this embodiment is made into a sheath, and the sheath is subjected to a sulfuric acid resistance test. The sulfuric acid resistance test is specifically to immerse the sheath in a sulfuric acid solution with a concentration of 35mas% at 90°C for 24 hours, and then to perform acid-resistant tensile strength and acid-resistant elongation at break tests. The detection method of the inspection items is based on GB / T 2951.11.

[0155]

[0156] Example 4

[0157] This embodiment provides an acid-resistant and wear-resistant cable sheath material, which is different from that in Embodiment 1 in that:

[0158] This embodiment provides an acid-resistant and wear-resistant cable sheath material, the raw material formula of which includes:

[0159] 100 parts of chlorinated polyethylene rubber;

[0160] 5 parts of acid-base regulator;

[0161] Stabilizer 10 parts;

[0162] 3 parts of lubricant;

[0163] Filler 110 parts;

[0164] 8 parts of flame retardant;

[0165] 1.5 parts of main cross-linking agent;

[0166] 1 part of cross-linking agent;

[0167] 2 parts of antioxidant;

[0168] 20 parts of plasticizer;

[0169] 3 parts of color and filler.

[0170] Preferably, the chlorine content of the chlorinated polyethylene rubber is 35 mas %.

[0171] Preferably, the lubricant is a stearate and the lubricant is a viscosity adjusting lubricant.

[0172] Preferably, the filler is calcined kaolin, the filler is an acid and alkali resistant filler, and the calcined kaolin is ultrafine high-temperature calcined kaolin.

[0173] Preferably, the flame retardant is antimony trioxide and zinc borate (mass ratio is 4:1).

[0174] Preferably, the primary cross-linking agent is dicumyl peroxide.

[0175] Preferably, the accelerating crosslinking agent is triallyl isocyanurate.

[0176] Preferably, the cold-resistant plasticizer is dioctyl sebacate and dioctyl azelate (mass ratio is 1:1), and the plasticizer is a cold-resistant plasticizer.

[0177] Preferably, the pigment filler is medium-pigment carbon black, and the pigment filler is an acid- and alkali-resistant pigment filler.

[0178] Preferably, the acid-base regulator is magnesium oxide, and the magnesium oxide is highly active magnesium oxide;

[0179] The stabilizer is a calcium-zinc composite stabilizer and a barium-calcium-zinc composite stabilizer (mass ratio is 1:3);

[0180] The antioxidant is 2-mercaptobenzimidazole.

[0181] This embodiment provides a method for preparing an acid-resistant and wear-resistant cable sheath material, comprising the following steps:

[0182] Mixing ingredients → internal mixing → open mixing → rubber filtering → open mixing → calendering and slicing → collecting slices → weighing → packaging.

[0183] Chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer, pigment and filler are metered and added into internal mixer in order for mixing and plasticating. The mixing and plasticating temperature reaches 110-115°C and stabilizes for 3 minutes for discharging. Then, the material is mixed and plasticated at a temperature below 110°C, the rubber is filtered, the material is mixed again, the material is calendered and cooled to below 35°C, sliced, collected, weighed and packaged, to obtain the acid-resistant and wear-resistant cable sheath material.

[0184] The present embodiment provides an acid-resistant and wear-resistant flat cable, comprising at least two cable cores and a flat outer sheath arranged outside the cable cores, the cable core comprising: a conductive core, a polyester tape layer arranged outside the conductive core, and an insulating layer arranged outside the polyester tape layer, wherein the sheath material of the outer sheath is the above-mentioned acid-resistant and wear-resistant cable sheath material.

[0185] Preferably, the conductive core is formed by twisting at least two tinned copper monofilaments with a diameter not exceeding 0.51 mm in multiple layers, and the twisted pitch-diameter ratio is not more than 25 times.

[0186] Preferably, the conductive core is made of Category 5 tinned soft copper conductor.

[0187] Preferably, the insulating layer is made of mixed rubber material, and the tensile strength of the insulation is not less than 6N / mm 2 , elongation is not less than 200%; the tensile strength of the sheath is not less than 12N / mm 2 , elongation is not less than 300%.

[0188] Preferably, the thickness of the insulating layer is 0.8 mm; the thickness of the outer sheath is 2.5 mm.

[0189] Supplement the experimental data corresponding to the beneficial effects of the technical solution of this embodiment.

[0190] The present embodiment provides an acid-resistant and wear-resistant cable sheath material and a preparation method thereof, and an acid-resistant and wear-resistant flat cable. The present embodiment improves the sheath material formula based on the cable use environment to meet the cable's use under acid-resistant and wear-resistant conditions. At the same time, the cable uses Category 5 tinned soft copper conductors to ensure the cable's softness and facilitate cable laying.

[0191] The sheath material in this embodiment is made into a sheath, and the sheath is subjected to a sulfuric acid resistance test. The sulfuric acid resistance test is specifically to immerse the sheath in a sulfuric acid solution with a concentration of 35mas% at 90°C for 24 hours, and then to perform acid-resistant tensile strength and acid-resistant elongation at break tests. The detection method of the inspection items is based on GB / T 2951.11.

[0192]

[0193] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those of ordinary skill 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 to be within the scope of protection of the present invention.

Claims

1. An acid-resistant and wear-resistant cable sheath material, It is characterized in that Its raw material formula includes: 100 parts of chlorinated polyethylene rubber; 5-10 parts of acid-base regulator; 5-10 parts of stabilizer; 3-5 parts of lubricant; 90-120 parts of filler; 5-10 parts of flame retardant; 1.5 to 3 parts of main cross-linking agent; 0.5-1.5 parts of promoting cross-linking agent; 1-2 parts of antioxidant; 15-25 parts of plasticizer; 3 to 5 parts of pigment and filler.

2. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The chlorine content of chlorinated polyethylene rubber is 35mas% to 40mas%.

3. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The lubricant is one or more of microcrystalline wax, stearic acid and stearate.

4. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The filler is calcined kaolin and / or precipitated silica.

5. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The flame retardant is antimony trioxide and / or zinc borate.

6. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The main cross-linking agent is di-tert-butyl dicumyl peroxide and / or dicumyl peroxide.

7. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The accelerating crosslinking agent is N,N'-m-phenylene bismaleimide and / or triallyl isocyanurate.

8. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The cold-resistant plasticizer is any one or more of dioctyl sebacate, dioctyl azelate, dioctyl adipate, and triethylene glycol diisooctanoate.

9. The acid-resistant and wear-resistant cable sheath material according to claim 1, It is characterized in that The pigment filler is any one of macromolecular red, phthalocyanine blue, macromolecular yellow and medium pigment carbon black particles.

10. The acid-resistant and wear-resistant cable sheath material according to any one of claims 1 to 9, It is characterized in that The acid-base regulator is any one or more of magnesium oxide, zinc oxide, and calcium oxide; The stabilizer is any one or more of a calcium-zinc composite stabilizer, a barium-calcium-zinc composite stabilizer, and a rare earth composite stabilizer; The antioxidant is any one or more of 2,2,4-trimethyl-1,2-dihydroquinoline polymer, N-(1,3-dimethyl)butyl-N'-phenyl-p-phenylenediamine and 2-mercaptobenzimidazole.

11. A method for preparing the acid-resistant and wear-resistant cable sheath material according to any one of claims 1 to 10, It is characterized in that The following steps are involved: Chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer, pigment and filler are metered and added to an internal mixer in order for mixing and plasticating, and the mixing and plasticating temperature reaches 110°C to 115°C and is stabilized for 2 to 5 minutes for discharge; then, the material is mixed and plasticated at a temperature below 110°C, the rubber is filtered, the material is mixed and refined again, and the material is calendered and cooled to below 35°C, and then the material is sliced, collected, weighed and packaged to obtain the acid-resistant and wear-resistant cable sheath material; Or chlorinated polyethylene rubber, acid-base regulator, stabilizer, lubricant, filler, flame retardant, main cross-linking agent, cross-linking promoter, antioxidant, plasticizer and pigment are metered and added to a kneader in order for mixing and plasticating. The mixing and plasticating temperature reaches 110°C to 115°C and is stabilized for 2 to 5 minutes for discharging. Then, the material is plasticated and granulated at 110 to 80°C, cooled to below 35°C, metered and packaged to obtain the acid-resistant and wear-resistant cable sheath material.

12. An acid-resistant and wear-resistant flat cable, It is characterized in that The invention comprises at least two cable cores and a flat outer sheath arranged outside the cable cores. The cable core comprises: a conductive core, a polyester tape layer arranged outside the conductive core, and an insulating layer arranged outside the polyester tape layer. The sheath material of the outer sheath is the acid-resistant and wear-resistant cable sheath material as described in any one of claims 1 to 10.

13. The acid-resistant and wear-resistant flat cable according to claim 12, It is characterized in that The conductive core is made of at least two tinned copper monofilaments with a diameter not exceeding 0.51mm, which are twisted together in multiple layers, and the twisted pitch diameter ratio is not more than 25 times.

14. The acid-resistant and wear-resistant flat cable according to claim 12, It is characterized in that The conductive core is made of Category 5 tinned soft copper conductor.

15. The acid-resistant and wear-resistant flat cable according to claim 12, It is characterized in that The insulation layer is made of mixed rubber material, and the tensile strength of the insulation is not less than 6N / mm 2 , elongation is not less than 200%; the tensile strength of the sheath is not less than 12N / mm 2 , elongation is not less than 300%.

16. The acid-resistant and wear-resistant flat cable according to claim 12, It is characterized in that The thickness of the insulation layer is 0.8-1.0mm; the thickness of the outer sheath is 2.0-2.5mm.

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