Super-wear-resistant, long-service-life, high-flexibility, light-weight and negative-pressure-resistant rubber refueling hose and preparation method thereof

Abstract

The invention discloses a super-wear-resistant, long-service-life, high-flexibility, light-weight and negative-pressure-resistant rubber refueling hose and a preparation method thereof. The invention discloses a super-wear-resistant, long-service-life, high-flexibility, light-weight and negative-pressure-resistant rubber refueling hose. The negative-pressure-resistant rubber refueling hose sequentially comprises an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber woven layer, an outer rubber layer, a transition layer and a wear-resistant protective layer from inside to outside. Or the inner rubber layer, the spiral steel wire layer, the middle rubber layer, the fiber woven layer, the outer rubber layer and the wear-resistant protective layer are sequentially arranged from inside to outside; the spiral steel wire layer is formed by spirally winding a steel wire; the fiber woven layer is formed by weaving one or more of aramid fibers, polyester fibers and vinylon fibers; and the wear-resistant protective layer is made of an ultra-high molecular weight polyethylene film. The negative-pressure-resistant rubber refueling hose meets the negative-pressure-resistant effect, meanwhile, the negative-pressure-resistant rubber refueling hose is lighter in weight, good in flexibility and excellent in wear resistance and bending fatigue performance, and the service life of the hose can be effectively prolonged.

Description

Technical Field

[0001] This invention belongs to the field of refueling hoses, and relates to a refueling hose and its preparation method, specifically to an ultra-wear-resistant, long-life, highly flexible, lightweight negative pressure resistant rubber refueling hose and its preparation method. Background Technology

[0002] Fueling hoses are generally divided into pre-pump hoses and post-pump hoses. The two ends of the pre-pump hose are connected to the fuel supply system and the fuel pump, respectively. In actual operation, especially under high flow conditions, the fuel supply volume and refueling speed often do not match, and the pre-pump hose is prone to negative pressure. Therefore, the pre-pump hose needs to have the ability to resist negative pressure.

[0003] To achieve negative pressure resistance in the pre-pump hose, a multi-layer, high-coverage fiber-reinforced structure with a wall thickness of 7mm or more, or a steel wire braided structure, is typically used to meet the hose's negative pressure resistance requirements. However, using a multi-layer, high-coverage fiber-reinforced structure requires the addition of adhesive to ensure the bonding strength between the layers, which is not environmentally friendly during production. Furthermore, this type of hose has a large bending radius and poor flexibility. On the other hand, steel wire braided hoses are rigid but lack flexibility and are typically heavy, failing to achieve weight reduction.

[0004] Another problem encountered during the use of hoses is their insufficient wear resistance. Because these refueling hoses have a large diameter and are heavy, they are difficult to move. Therefore, workers usually drag the hoses to the fixed refueling point during refueling. As we all know, the ground of refueling sites is generally treated with anti-slip measures and has a rough texture with large particles. Dragging the hoses will cause certain damage, which will greatly reduce the service life of the hoses. Summary of the Invention

[0005] The purpose of this invention is to solve the key problems of traditional pre-pump rubber refueling hoses on the market, such as poor wear resistance, short service life, heavy weight and mutual restriction between anti-negative pressure performance, and to provide an ultra-wear-resistant, long-life, highly flexible, lightweight anti-negative pressure rubber refueling hose and its preparation method.

[0006] The objective of this invention is achieved through the following technical solution:

[0007] A super wear-resistant, long-life, highly flexible, and lightweight anti-negative pressure rubber refueling hose, wherein the anti-negative pressure rubber refueling hose comprises, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer; or, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer.

[0008] The thickness of the inner adhesive layer is 2.0 mm to 3.5 mm.

[0009] The inner layer rubber compound used to prepare the inner rubber layer is one or a combination of several of chloroprene rubber, nitrile rubber, nitrile PVC rubber, and HNBR rubber. Nitrile rubber has excellent comprehensive properties such as oil resistance, heat resistance, cold resistance, aging resistance, and chemical corrosion resistance, and it has excellent resistance to non-polar and weakly polar oils and solvents.

[0010] Preferably, the inner rubber material used to prepare the inner rubber layer is nitrile rubber.

[0011] Specifically, the inner layer rubber compound of the prepared inner rubber layer is composed of the following components in parts by weight: 100 parts nitrile rubber, 40-100 parts natural gas semi-reinforcing carbon black, 50-80 parts kaolin, 20-50 parts calcium carbonate, 5-30 parts dioctyl sebacate, 3-7 parts zinc oxide, 0.5-5 parts stearic acid, 4-6 parts antioxidant, 1-3 parts sulfur, and 1-3 parts accelerator; the antioxidant is a combination of antioxidant RD, antioxidant MB, and antioxidant 4010NA in a weight ratio of 1:1:3; the accelerator is a combination of accelerator D and accelerator MBTS in a weight ratio of 1:4.

[0012] The spiral steel wire layer is formed by spirally winding steel wire.

[0013] Preferably, the spiral steel wire layer is formed by winding copper-plated steel wire with a wire diameter of 0.7mm to 1.2mm with a pitch of 15mm to 30mm.

[0014] Preferably, the diameter of the copper-plated steel wire is 0.9 mm.

[0015] The intermediate adhesive layer is made by extrusion or winding processes.

[0016] Preferably, the intermediate adhesive layer is made using a winding process.

[0017] Preferably, the intermediate rubber layer is made of 1 to 2 layers of intermediate rubber sheets through a winding process.

[0018] Preferably, the intermediate adhesive layer is made of two layers of intermediate adhesive sheets through a reverse winding process.

[0019] The thickness of the film is 0.4mm to 1.0mm.

[0020] Preferably, the thickness of the film is 0.5 mm.

[0021] The intermediate rubber compound used to prepare the intermediate layer is the same as the inner rubber compound used to prepare the inner layer.

[0022] The fiber braided layer is woven from one or more of aramid fibers, polyester fibers, and vinylon fibers.

[0023] Preferably, the fiber braided layer is woven using impregnated polyester yarn and a braiding method of 3 to 6 strands per spindle in 48 spindles.

[0024] More preferably, the fiber braided layer is woven using impregnated polyester yarn and a 48-spindle, 4-strand braiding method.

[0025] The impregnated polyester yarn is a 2000D to 4000D impregnated polyester yarn, preferably a 4000D impregnated polyester yarn.

[0026] The impregnation system of the impregnated polyester yarn is an RFL or isocyanate impregnation system.

[0027] When the negative pressure resistant rubber refueling hose comprises, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer, the thickness of the outer rubber layer is 1.0 mm to 2.0 mm; the outer rubber material used to prepare the outer rubber layer is one or a combination of several of the following: neoprene rubber, nitrile rubber, nitrile PVC rubber, HNBR rubber, and natural rubber. Preferably, the outer rubber material used to prepare the outer rubber layer is neoprene rubber.

[0028] Specifically, the outer rubber layer is composed of the following components in parts by weight: 100 parts chloroprene rubber, 1-3 parts stearic acid, 1-3 parts protective wax 654, 2-4 parts antioxidant 4010NA, 1-3 parts antioxidant OCTAMINE, 30-40 parts plasticizer DOS, 40-55 parts carbon black N550, 30-40 parts carbon black N774, 3-4 parts vulcanizing agent STRUKTOL ZIMAG 29 / 43, and 1-3 parts accelerator DM.

[0029] The transition layer rubber compound used to prepare the transition layer is one or a combination of several of EPDM rubber, butadiene rubber, and natural rubber.

[0030] Specifically, the transition layer rubber compound used to prepare the transition layer consists of the following components in parts by weight: 100 parts base material, 3-5.5 parts antioxidant, 60-120 parts carbon black, 10-30 parts silica, 5 parts zinc oxide, 1.5-2 parts stearic acid, 5-20 parts plasticizer, 3-5 parts coupling agent, 5-8 parts binder, 2-5 parts sulfur, and 1-2 parts accelerator; wherein the base material is one or more of EPDM rubber, natural rubber, and butadiene rubber.

[0031] Preferably, the base material is a combination of EPDM rubber and natural rubber, or a combination of EPDM rubber and butadiene rubber, or a combination of EPDM rubber, natural rubber and butadiene rubber; more preferably, the base material is a combination of EPDM rubber and natural rubber in a weight ratio of 1:1, or a combination of EPDM rubber and butadiene rubber in a weight ratio of 1:1, or a combination of EPDM rubber, natural rubber and butadiene rubber in a weight ratio of (1-2):1:(1-2).

[0032] Specifically, the EPDM rubber can be selected from EPDM4045, the natural rubber can be selected from No. 1 smoked sheet rubber, and the butadiene rubber can be selected from butadiene rubber BR9000.

[0033] The antioxidant is one or more of antioxidant RD, antioxidant 4010NA, and protective wax, preferably a combination of antioxidant RD, antioxidant 4010NA and protective wax in a weight ratio of 1.5:(1-2):2.

[0034] The carbon black is one or more of carbon black N550, carbon black N774, and natural gas semi-reinforcing carbon black, preferably carbon black N550.

[0035] The plasticizer is one or more of plasticizer DOTP, plasticizer DOS, and plasticizer TP-90B, preferably plasticizer DOS.

[0036] The accelerator mentioned is accelerator CZ.

[0037] The coupling agent is silicon 69.

[0038] The adhesive is a combination of adhesive A and adhesive RS in a weight ratio of 1:1.5.

[0039] The thickness of the transition layer is 0.2 mm to 0.6 mm.

[0040] When the anti-negative pressure rubber refueling hose consists of an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer from the inside out, the thickness of the outer rubber layer is 1.0mm to 2.0mm; the outer rubber material used to prepare the outer rubber layer is one or a combination of several of EPDM rubber, butadiene rubber, and natural rubber.

[0041] Specifically, the outer rubber layer is composed of the following components in parts by weight: 100 parts base material, 3-5.5 parts antioxidant, 60-120 parts carbon black, 10-30 parts silica, 5 parts zinc oxide, 1.5-2 parts stearic acid, 5-20 parts plasticizer, 3-5 parts coupling agent, 5-8 parts adhesive, 2-5 parts sulfur, and 1-2 parts accelerator; wherein the base material is one or more of EPDM rubber, natural rubber, and butadiene rubber.

[0042] Preferably, the base material is a combination of EPDM rubber and natural rubber, or a combination of EPDM rubber and butadiene rubber, or a combination of EPDM rubber, natural rubber and butadiene rubber; more preferably, the base material is a combination of EPDM rubber and natural rubber in a weight ratio of 1:1, or a combination of EPDM rubber and butadiene rubber in a weight ratio of 1:1, or a combination of EPDM rubber, natural rubber and butadiene rubber in a weight ratio of (1-2):1:(1-2).

[0043] Specifically, the EPDM rubber can be selected from EPDM4045, the natural rubber can be selected from No. 1 smoked sheet rubber, and the butadiene rubber can be selected from butadiene rubber BR9000.

[0044] The antioxidant is one or more of antioxidant RD, antioxidant 4010NA, and protective wax, preferably a combination of antioxidant RD, antioxidant 4010NA and protective wax in a weight ratio of 1.5:(1-2):2.

[0045] The carbon black is one or more of carbon black N550, carbon black N774, and natural gas semi-reinforcing carbon black, preferably carbon black N550.

[0046] The plasticizer is one or more of plasticizer DOTP, plasticizer DOS, and plasticizer TP-90B, preferably plasticizer DOS.

[0047] The accelerator mentioned is accelerator CZ.

[0048] The coupling agent is silicon 69.

[0049] The adhesive is a combination of adhesive A and adhesive RS in a weight ratio of 1:1.5.

[0050] The wear-resistant protective layer is made of ultra-high molecular weight polyethylene (UHMW-PE) film, with a thickness of 0.05 mm to 0.3 mm and a molecular weight of 6,000,000 to 9,500,000.

[0051] Preferably, the thickness of the ultra-high molecular weight polyethylene (UHMW-PE) film is 0.15 mm.

[0052] Another objective of this invention is to provide a method for preparing an ultra-wear-resistant, long-life, highly flexible, and lightweight anti-negative pressure rubber refueling hose. When the anti-negative pressure rubber refueling hose comprises, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer, the method includes the following steps:

[0053] Step (1): Set the temperatures of each zone of the extruder to 60±5℃, 60±5℃, 65±5℃, and 75±5℃ respectively. Feed the inner layer rubber material into the feed port of the extruder, insert the mandrel into the rubber extruder, and extrude the inner layer rubber material under vacuum conditions to obtain an intermediate tube blank containing an inner rubber layer.

[0054] Step (2): Place the intermediate tube blank with the mandrel on the wire winding machine, and wind the wire evenly in a spiral shape to the outside of the inner rubber layer. Set the pitch to 15mm to 30mm, and adjust the winding tension until the wire is embedded in the rubber layer to a depth of 0.3 to 0.5mm to obtain an intermediate tube blank containing a spiral wire layer.

[0055] Step (3): Insert the intermediate tube blank with the mandrel into the medium rubber film winding machine, so that the two layers of medium rubber film are wound evenly in opposite directions to cover the outside of the spiral steel wire layer. Then, insert it into the cloth tape winding machine again to wind and unwind the cloth, so that the medium rubber film and the spiral steel wire layer are tightly bonded to obtain an intermediate tube blank containing the medium rubber layer.

[0056] Step (4): Insert the intermediate tube blank with the mandrel into the braiding machine to braid the reinforcing layer and obtain an intermediate tube blank containing the braided layer.

[0057] Step (5): Set the temperatures of each zone of the extruder to 40±5℃, 40±5℃, 50±5℃, and 55±5℃ respectively. Feed the outer layer rubber material into the feed port of the extruder, insert the intermediate tube blank with the mandrel into the rubber extruder, and extrude the outer layer rubber material under vacuum conditions to obtain an intermediate tube blank containing the outer rubber layer.

[0058] Step (6): Set the temperatures of each zone of the extruder to 50±5℃, 60±5℃, 50±5℃, and 70±5℃ respectively. Feed the transition layer rubber into the feed port of the extruder, insert the intermediate tube blank with the mandrel into the rubber extruder, and extrude the transition layer rubber under vacuum conditions to obtain an intermediate tube blank containing the transition layer.

[0059] Step (7): Insert the intermediate tube blank with the mandrel into the film winding machine, and wind the ultra-high molecular weight polyethylene film to the outside of the transition adhesive layer. The winding overlap rate is 50%, and a final tube blank containing a wear-resistant protective layer is obtained.

[0060] Step (8): Place the end tube blank with the mandrel on the winding and unwinding machine and wrap the water-coated cloth around the end tube blank;

[0061] Step (9): The final pipe blank wrapped with water-coated cloth is subjected to high-temperature steam vulcanization, and the cloth is unwrapped to obtain a negative pressure resistant rubber refueling hose.

[0062] In step (1), the vacuum condition is a vacuum degree ≤ 40 kPa.

[0063] Step (3), preferably, insert the nylon tape into the nylon tape winding machine and use the nylon tape to wrap and unwrap the fabric.

[0064] In step (5), the vacuum condition is a vacuum degree ≤ 40 kPa.

[0065] In step (6), the vacuum condition is a vacuum degree ≤ 40 kPa.

[0066] In step (8), the water-coated fabric is a nylon water-coated fabric.

[0067] In step (9), the vulcanization temperature is 150℃±3℃ and the vulcanization time is 60±5min.

[0068] Another objective of this invention is to provide a method for preparing an ultra-wear-resistant, long-life, highly flexible, and lightweight anti-negative pressure rubber refueling hose. The method, comprising, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer, includes the following steps:

[0069] Step (1): Set the temperatures of each zone of the extruder to 60±5℃, 60±5℃, 65±5℃, and 75±5℃ respectively. Feed the inner layer rubber material into the feed port of the extruder, insert the mandrel into the rubber extruder, and extrude the inner layer rubber material under vacuum conditions to obtain an intermediate tube blank containing an inner rubber layer.

[0070] Step (2): Place the intermediate tube blank with the mandrel on the wire winding machine, and wind the wire evenly in a spiral shape to the outside of the inner rubber layer. Set the pitch to 15mm to 30mm, and adjust the winding tension until the wire is embedded in the rubber layer to a depth of 0.3 to 0.5mm to obtain an intermediate tube blank containing a spiral wire layer.

[0071] Step (3): Insert the intermediate tube blank with the mandrel into the medium rubber film winding machine, so that the two layers of medium rubber film are wound evenly in opposite directions to cover the outside of the spiral steel wire layer. Then, insert it into the cloth tape winding machine again to wind and unwind the cloth, so that the medium rubber film and the spiral steel wire layer are tightly bonded to obtain an intermediate tube blank containing the medium rubber layer.

[0072] Step (4): Insert the intermediate tube blank with the mandrel into the braiding machine to braid the reinforcing layer and obtain an intermediate tube blank containing the braided layer.

[0073] Step (5): Set the temperatures of each zone of the extruder to 50±5℃, 60±5℃, 50±5℃, and 70±5℃ respectively. Feed the outer layer rubber material into the feed port of the extruder, insert the intermediate tube blank with the mandrel into the rubber extruder, and extrude the outer layer rubber material under vacuum conditions to obtain an intermediate tube blank containing the outer rubber layer.

[0074] Step (6): Insert the intermediate tube blank with the mandrel into the film winding machine, and wind the ultra-high molecular weight polyethylene film to the outside of the transition adhesive layer. The winding overlap rate is 50%, and a final tube blank containing a wear-resistant protective layer is obtained.

[0075] Step (7): Place the end tube blank with the mandrel on the winding and unwinding machine, and wrap the water-coated cloth around the end tube blank;

[0076] Step (8): The final pipe blank wrapped with water-coated cloth is subjected to high-temperature steam vulcanization and the cloth is unwrapped to obtain an ultra-wear-resistant, high burst strength, lightweight negative pressure resistant rubber refueling hose.

[0077] In step (1), the vacuum condition is a vacuum degree ≤ 40 kPa.

[0078] Step (3), preferably, insert the nylon tape into the nylon tape winding machine and use the nylon tape to wrap and unwrap the fabric.

[0079] In step (5), the vacuum condition is a vacuum degree ≤ 40 kPa.

[0080] In step (7), the water-coated fabric is a nylon water-coated fabric.

[0081] In step (8), the vulcanization temperature is 150℃±3℃ and the vulcanization time is 60±5min.

[0082] The beneficial effects of this invention are:

[0083] This invention provides an anti-negative pressure rubber refueling hose that achieves the desired anti-negative pressure effect while also being lighter, more flexible, and exhibiting excellent wear resistance and flexural fatigue resistance, effectively extending the hose's service life. Specifically:

[0084] This invention presents an anti-negative pressure rubber refueling hose that abandons the traditional approach of increasing the number of reinforcing layers and increasing the hose wall thickness to achieve anti-negative pressure function. Instead, it innovatively employs a "spiral-wound steel wire + only one layer of fiber braiding" method to achieve the ideal anti-negative pressure effect. Extensive testing has verified the designed hose structure and process parameters, enabling the product to meet anti-negative pressure requirements while also being lighter and more flexible, with a weight not exceeding 2.0 kg / m and a minimum bending radius of less than 300 mm. Furthermore, the inner side of the hose remains smooth and wrinkle-free during bending.

[0085] This invention uses copper-plated steel wire with a diameter of 0.7–1.2 mm and prepares the spiral steel wire layer through a spiral winding process, successfully replacing the traditional multi-layer fiber-reinforced structure or steel wire braided structure. This not only facilitates the lightweighting of the hose but also eliminates the need for adhesives during production, meeting increasingly stringent environmental protection requirements. The 15 mm–30 mm pitch design achieves an optimal balance between the amount of steel wire used and the final hose's resistance to negative pressure, collapse, and bending flexibility. Specifically, the lowest possible steel wire winding density ensures excellent resistance to negative pressure, collapse, and bending flexibility. Furthermore, the inner and middle layers use the same compound rubber, which, after vulcanization and cross-linking, does not form a traditional adhesive interface. Instead, it effectively promotes the complete fusion and interpenetration of the two rubber layers, tightly binding the spiral steel wire within to form a unified structure. This has beneficial effects on the hose's flexibility, fatigue resistance, and service life.

[0086] Furthermore, this invention innovatively incorporates a wear-resistant protective layer on the outermost layer of the hose. This layer is made of ultra-high molecular weight polyethylene film, which possesses a very long and tightly packed molecular chain structure. The molecules are linked by carbon-carbon single bonds, forming a stable and highly ordered crystalline structure, significantly enhancing its wear resistance. Simultaneously, its extremely low coefficient of friction effectively reduces frictional resistance, contributing to excellent wear resistance. The molecular structure of this material also gives it excellent oil and weather resistance, meeting the operating conditions of the product. However, this material exhibits poor adhesion to polar rubber but good adhesion to non-polar rubber. Therefore, this invention effectively ensures the adhesion between the wear-resistant protective layer and its contact surface by introducing a non-polar transition layer or directly designing the transition layer material as the outer adhesive layer material. During hose vulcanization, this material also melts and reshapes, forming a dense, uniform, and highly bonded protective layer on the hose surface, thus achieving the ultra-wear-resistant and long-life performance goals of this invention. Moreover, the density of this material is only 0.9 g / cm³. 3 The left and right sides also contribute to the lightweighting of the product of this invention.

[0087] This invention relates to an anti-negative pressure rubber refueling hose. Through various innovative structural designs, it introduces ultra-high molecular weight polyethylene (UHMW-PE) into the rubber refueling hose for the first time. The special design solves the adhesion problem between UHMW-PE and the hose contact surface, achieving the functions of ultra-wear-resistant, long-life, highly flexible, lightweight, and anti-negative pressure refueling hose before the pump. It completely solves the limitations and problems of traditional pre-pump refueling hoses. Detailed Implementation

[0088] The technical solution of the present invention will be further described below through specific embodiments.

[0089] Example 1

[0090] A super wear-resistant, long-life, highly flexible, and lightweight anti-negative pressure rubber refueling hose is provided. The anti-negative pressure rubber refueling hose consists of, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer.

[0091] The thickness of the inner adhesive layer is 3.0 mm.

[0092] The inner layer rubber compound used to prepare the inner rubber layer consists of the following components in parts by weight: 100 parts nitrile rubber KRYNAC2865C, 70 parts natural gas semi-reinforcing carbon black, 50 parts kaolin, 20 parts calcium carbonate, 10 parts dioctyl sebacate, 5 parts zinc oxide, 1 part stearic acid, 1 part antioxidant RD, 1 part antioxidant MB, 3 parts antioxidant 4010NA, 3 parts sulfur, 0.3 parts accelerator D, and 1.2 parts accelerator MBTS.

[0093] The spiral steel wire layer is made of copper-plated steel wire with a diameter of 0.9mm and a pitch of 25mm, through a winding process.

[0094] The intermediate rubber compound used to prepare the intermediate layer is the same as the inner rubber compound used to prepare the inner layer. The intermediate layer is made by reverse winding two 0.5mm thick intermediate rubber sheets.

[0095] The fiber braided layer is made of 4000D isocyanate impregnated polyester yarn, woven using a 48-spindle, 4-strand braiding method.

[0096] The outer rubber compound used to prepare the outer layer consists of the following components in parts by weight: 100 parts chloroprene rubber DCR-30, 1 part stearic acid, 2 parts protective wax 654, 2 parts antioxidant 4010NA, 2 parts antioxidant OCTAMINE, 30 parts plasticizer DOS, 55 parts carbon black 550, 40 parts carbon black 774, 4 parts vulcanizing agent STRUKTOL ZIMAG 29 / 43, and 1 part accelerator DM.

[0097] The thickness of the outer adhesive layer is 1.2 mm.

[0098] The transition layer compound is composed of the following components in parts by weight: 50 parts EPDM rubber, 50 parts natural rubber, 1.5 parts antioxidant RD, 1 part antioxidant 4010NA, 2 parts protective wax 654, 70 parts carbon black N550, 20 parts silica, 5 parts zinc oxide, 1.5 parts stearic acid, 15 parts plasticizer DOS, 4 parts coupling agent silicone 69, 2 parts adhesive A, 2 parts adhesive RS, 2.5 parts sulfur, and 1.5 parts accelerator CZ.

[0099] The thickness of the transition layer is 0.4 mm.

[0100] The wear-resistant protective layer is made of ultra-high molecular weight polyethylene (UHMW-PE) film with a molecular weight of 9.2 million and a film thickness of 0.15 mm.

[0101] The preparation method of the ultra-wear-resistant, long-life, highly flexible, lightweight negative pressure resistant rubber refueling hose described in this embodiment includes the following steps:

[0102] Step (1): Set the temperatures of each zone of the extruder to 60±5℃, 60±5℃, 65±5℃, and 75±5℃ respectively. Feed the inner layer rubber material into the feed port of the extruder, insert the mandrel into the rubber extruder, and extrude the inner layer rubber material under vacuum conditions (vacuum degree ≤40KPa) to obtain an intermediate tube blank containing an inner rubber layer.

[0103] Step (2): Place the intermediate tube blank with mandrel on the wire winding machine, and wind the wire evenly in a spiral shape to the outside of the inner rubber layer. Set the pitch to 25mm and adjust the winding tension until the wire is embedded in the rubber layer to a depth of 0.3mm to obtain an intermediate tube blank containing a spiral wire layer.

[0104] Step (3): Insert the intermediate tube blank with the mandrel into the medium rubber film winding machine, so that the two layers of medium rubber film are wound evenly in opposite directions to cover the spiral steel wire layer. Then, insert it into the cloth tape winding machine again and use nylon cloth tape to wrap and unwrap the cloth, so that the medium rubber film and the spiral steel wire layer form a tight fit, and obtain an intermediate tube blank containing the medium rubber layer.

[0105] Step (4): Insert the intermediate tube blank with the mandrel into the braiding machine to braid the reinforcing layer and obtain an intermediate tube blank containing the braided layer.

[0106] Step (5): Set the temperatures of each zone of the extruder to 40±5℃, 40±5℃, 50±5℃, and 55±5℃ respectively. Feed the outer layer of rubber into the feed port of the extruder and insert the intermediate tube blank with the mandrel into the rubber extruder. Extrude the outer layer of rubber under vacuum conditions (vacuum degree ≤40KPa) to obtain an intermediate tube blank containing the outer rubber layer.

[0107] Step (6): Set the temperatures of each zone of the extruder to 50±5℃, 60±5℃, 50±5℃, and 70±5℃ respectively. Feed the transition layer rubber into the feed port of the extruder and insert the intermediate tube blank with the mandrel into the rubber extruder. Extrude the transition layer rubber under vacuum conditions (vacuum degree ≤40KPa) to obtain an intermediate tube blank containing the transition layer.

[0108] Step (7): Insert the intermediate tube blank with the mandrel into the film winding machine, and wind the ultra-high molecular weight polyethylene film to the outside of the transition adhesive layer. The winding overlap rate is 50%, and a final tube blank containing a wear-resistant protective layer is obtained.

[0109] Step (8): Place the end tube blank with the mandrel on the winding and unwinding machine, and wrap the end tube blank with nylon water-coated cloth.

[0110] Step (9): The final pipe blank wrapped with water-coated cloth is subjected to high-temperature steam vulcanization at a temperature of 150℃±3℃ and a vulcanization time of 60±5min. After the cloth is removed, an ultra-wear-resistant, long-life, highly flexible, lightweight, and negative pressure-resistant rubber refueling hose is obtained.

[0111] Example 2

[0112] A super wear-resistant, long-life, highly flexible, lightweight anti-negative pressure rubber refueling hose is provided. The anti-negative pressure rubber refueling hose consists of an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer, from the inside out.

[0113] The inner adhesive layer, spiral steel wire layer, middle adhesive layer, fiber braided layer, and wear-resistant protective layer are all the same as in Example 1.

[0114] The outer rubber layer is composed of the following components in parts by weight: 50 parts EPDM rubber, 50 parts natural rubber, 1.5 parts antioxidant RD, 1 part antioxidant 4010NA, 2 parts protective wax 654, 70 parts carbon black N550, 20 parts silica, 5 parts zinc oxide, 1.5 parts stearic acid, 15 parts plasticizer DOS, 4 parts coupling agent silicone 69, 2 parts adhesive A, 2 parts adhesive RS, 2.5 parts sulfur, and 1.5 parts accelerator CZ.

[0115] The thickness of the outer adhesive layer is 1.5 mm.

[0116] The preparation method of the ultra-wear-resistant, long-life, highly flexible, lightweight negative pressure resistant rubber refueling hose described in this embodiment includes the following steps:

[0117] Step (1): Set the temperatures of each zone of the extruder to 60±5℃, 60±5℃, 65±5℃, and 75±5℃ respectively. Feed the inner layer rubber material into the feed port of the extruder, insert the mandrel into the rubber extruder, and extrude the inner layer rubber material under vacuum conditions (vacuum degree ≤40KPa) to obtain an intermediate tube blank containing an inner rubber layer.

[0118] Step (2): Place the intermediate tube blank with mandrel on the wire winding machine, and wind the wire evenly in a spiral shape to the outside of the inner rubber layer. Set the pitch to 25mm and adjust the winding tension until the wire is embedded in the rubber layer to a depth of 0.3mm to obtain an intermediate tube blank containing a spiral wire layer.

[0119] Step (3): Insert the intermediate tube blank with the mandrel into the medium rubber film winding machine, so that the two layers of medium rubber film are wound evenly in opposite directions to cover the spiral steel wire layer. Then, insert it into the cloth tape winding machine again and use nylon cloth tape to wrap and unwrap the cloth, so that the medium rubber film and the spiral steel wire layer form a tight fit, and obtain an intermediate tube blank containing the medium rubber layer.

[0120] Step (4): Insert the intermediate tube blank with the mandrel into the braiding machine to braid the reinforcing layer and obtain an intermediate tube blank containing the braided layer.

[0121] Step (5): Set the temperatures of each zone of the extruder to 50±5℃, 60±5℃, 50±5℃, and 70±5℃ respectively. Feed the outer layer of rubber into the feed port of the extruder and insert the intermediate tube blank with the mandrel into the rubber extruder. Extrude the outer layer of rubber under vacuum conditions (vacuum degree ≤40KPa) to obtain an intermediate tube blank containing the outer rubber layer.

[0122] Step (6): Insert the intermediate tube blank with the mandrel into the film winding machine, and wind the ultra-high molecular weight polyethylene film to the outside of the transition adhesive layer. The winding overlap rate is 50%, and a final tube blank containing a wear-resistant protective layer is obtained.

[0123] Step (7): Place the end tube blank with the mandrel on the winding and unwinding machine, and wrap the end tube blank with nylon water-coated cloth;

[0124] Step (8): The final pipe blank wrapped with water-coated cloth is subjected to high-temperature steam vulcanization at a temperature of 150℃±3℃ and a vulcanization time of 60±5min. After the cloth is removed, an ultra-wear-resistant, long-life, highly flexible, lightweight, and negative pressure-resistant rubber refueling hose is obtained.

[0125] Comparative Example 1

[0126] Referring to the hose of Example 1, only the diameter of the copper-plated steel wire in the spiral steel wire layer is adjusted to 1.7mm, and the rest is the same as the anti-negative pressure rubber oiling hose of Example 1.

[0127] Comparative Example 2

[0128] The hose is the same as that in Example 1, but without the transition layer and wear-resistant protective layer. Otherwise, it is the same as the negative pressure rubber oiling hose in Example 1.

[0129] Comparative Example 3

[0130] The hose is the same as the anti-negative pressure rubber oiling hose of Example 1, except that the transition layer is removed.

[0131] Comparative Example 4

[0132] A single-layer steel wire braided rubber hose has a structure consisting of an inner rubber layer, a steel wire braided layer, and an outer rubber layer from the inside out. The rubber materials of the inner and outer rubber layers are the same as in Example 1. The steel wire braided layer is made of copper-plated steel wire with a diameter of 0.3 mm, braided in a 48-spindle, 14-strand braiding method.

[0133] Comparative Example 5

[0134] The multi-layer fiber-reinforced rubber hose consists of an inner rubber layer, three fiber reinforcement layers, and an outer rubber layer, arranged from the inside out. The rubber material of the inner rubber layer is the same as that of the inner layer in Example 1, and the thickness of the inner rubber layer is 3.0 mm. The rubber material of the outer rubber layer is the same as that of the outer layer in Example 1, and the thickness of the outer rubber layer is 1.2 mm. A mortar is applied between the three fiber reinforcement layers to ensure adhesion between the fiber layers. All three fiber reinforcement layers are made of 4000D polyester yarn and are woven using a braiding method of 48 spindles with 4 strands per spindle. The mortar used between adjacent braided layers is made by mixing and dissolving the outer rubber material of Example 1 with xylene and ethyl acetate in a mass ratio of 1:1:2.

[0135] The performance of Examples 1-2 and Comparative Examples 1-5 was examined according to Table 1.

[0136] Table 1. Performance of negative pressure resistant rubber oiling hoses in Examples 1-2 and Comparative Examples 1-5

[0137] Hose performance testing Test methods Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Comparative Example 5 Hose weight per meter (kg / m) Use an electronic scale to weigh the hose; the hose weight per meter should be ≤2.3 kg / m. 1.95 1.87 2.16 1.85 1.93 2.62 2.3 Anti-negative pressure performance Referring to the test method of GB / T5567, take a 1m hose and place a smooth solid ball with a diameter of 0.9 times the inner diameter of the hose inside the hose. Within 60 seconds, reduce the internal pressure of the hose to -0.1MPa and maintain it for 15 minutes. There should be no signs of collapse or dent on the outside of the hose. Tilt the hose and the solid ball should be able to pass through the entire hose smoothly. The hose is free from any collapse, dents, or other abnormalities. When the hose is tilted, a solid ball can pass through the entire hose smoothly. The hose is free from any collapse, dents, or other abnormalities. When the hose is tilted, a solid ball can pass through the entire hose smoothly. The hose is free from any collapse, dents, or other abnormalities. When the hose is tilted, a solid ball can pass through the entire hose smoothly. The hose is free from any collapse, dents, or other abnormalities. When the hose is tilted, a solid ball can pass through the entire hose smoothly. The hose is free from any collapse, dents, or other abnormalities. When the hose is tilted, a solid ball can pass through the entire hose smoothly. The hose is free from any collapse, dents, or other abnormalities. When the hose is tilted, a solid ball can pass through the entire hose smoothly. The hose is free from any collapse, dents, or other abnormalities. When the hose is tilted, a solid ball can pass through the entire hose smoothly. <![CDATA[Wear resistance (mm 3 )]]> <![CDATA[Sample the hose surface for Akron abrasion test, ≤ 130 mm 3 > 20 19 20 116 19 114 121 flexible hose Bending the hose with a bending radius of 300mm, the hose should have no obvious abnormalities such as collapse, bulge, or wrinkles. The hose showed no abnormalities such as collapse, bulging, or wrinkling. The hose showed no abnormalities such as collapse, bulging, or wrinkling. Inner side protrusion of the hose bending radius The hose showed no abnormalities such as collapse, bulging, or wrinkling. The wear-resistant layer inside the bending radius of the hose exhibits fine wrinkles. The hose is difficult to bend to a bending radius of 300mm. The hose is difficult to bend to a bending radius of 300mm. Bending fatigue performance The hose is horizontally fixed on the bending fatigue testing equipment and subjected to bending fatigue testing. The bending radius is 300mm, the bending frequency is 0.2HZ, and the test is performed for 1 million cycles. The hose should not exhibit any abnormal phenomena such as detachment, wrinkles, collapse, or cracking. The hose showed no abnormalities such as gaps, wrinkles, collapses, or cracks. The hose showed no abnormalities such as gaps, wrinkles, collapses, or cracks. During the bending fatigue process of the hose, raised wrinkles appear on the inner side of the bending radius. The hose showed no abnormalities such as gaps, wrinkles, collapses, or cracks. When the bending fatigue reaches 250,000 cycles, the wear-resistant protective layer shows signs of peeling and delamination. When the bending fatigue reaches 800,000 cycles, delamination and bulging occur at the bends of the hose. During bending fatigue, the flexible hose may collapse or bend at the bend.

[0138] This invention, through innovative structural design, effectively solves numerous problems associated with traditional anti-negative pressure rubber refueling hoses, such as low flexibility, heavy weight, inconvenient operation, poor wear resistance, short service life, and environmentally unfriendly production processes. This invention is the first to introduce ultra-high molecular weight polyethylene (UHMW-PE) film material into this type of product. The high wear resistance, high weather resistance, and high solvent resistance of this material significantly reduce the design difficulty of the outer rubber layer formulation for rubber refueling hoses. This allows the functionality of the outer rubber layer to be transferred to the outer wear-resistant protective layer, effectively saving resources and improving efficiency in product development and production, while further enhancing product performance. The application of this material and the production process in this invention can also inspire its promotion and application in other rubber fields.

[0139] Example 1 designs the anti-negative pressure rubber refueling hose as follows: from the inside out, it consists of an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer. Table 1 shows that this hose structure exhibits excellent performance in terms of lightweight, wear resistance, flexibility, and anti-negative pressure, and also demonstrates excellent resistance to bending fatigue. Example 2 designs the transition layer rubber material as the outer rubber layer, directly contacting the wear-resistant protective layer. It also exhibits excellent performance because the ultra-high molecular weight polyethylene film used in the wear-resistant protective layer possesses the functions of a traditional hose outer rubber layer, namely, wear resistance, weather resistance, and chemical solvent resistance. Comparative Example 1 adjusted the diameter of the copper-plated steel wire in the spiral steel wire layer to 1.7mm. While this improved the hose's resistance to negative pressure, the excessively thick wire increased the hose's weight. Furthermore, the wire diameter constituted a large proportion of the hose's wall thickness. During bending, the rubber layer was compressed and deformed, and the steel wire, unable to deform with the rubber layer, protruded, resulting in a ring-shaped bulge on the inner side of the bend. The rubber material between the steel wires was severely compressed, forming wrinkles, which easily led to stress concentration and reduced the hose's lifespan. Comparative Example 2 lacked a wear-resistant protective layer, resulting in a significant decrease in the hose's wear resistance. Comparative Example 3 omitted the transition layer, directly contacting the wear-resistant protective layer. Due to the non-polar nature of ultra-high molecular weight polyethylene, the material's adhesion to the outer rubber layer was poor, easily leading to delamination during use. Comparative Example 4 is a traditional steel wire braided flexible hose. Although the rubber material used in this comparative example is the same as that in Example 1 of this invention, and no problems were found in the performance of the rubber material, the overall weight and flexibility of the hose were significantly reduced. Due to the large number of interlacing points of the steel wires in the steel wire braided structure, the corresponding bending stress is greater. Moreover, the relative displacement and friction between the steel wires during bending generates heat, which easily causes the rubber in contact with the steel wire braided layer to delaminate and separate, forming voids. Comparative Example 5 is a traditional multi-layer fiber-reinforced structure. When there are few fiber layers and the coverage is low, the hose has poor resistance to negative pressure. Therefore, most negative pressure resistant hoses adopt a multi-layer fiber-reinforced structure with a relatively high coverage. At the same time, adhesive is needed to be brushed between the fiber reinforcement layers to improve adhesion and help improve the hose's resistance to negative pressure. However, as can be seen from the test results in Table 1, this type of hose structure is difficult to accommodate a smaller bending radius and is prone to bending and collapse under strong bending.

[0140] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A super wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose, characterized in that: The aforementioned anti-negative pressure rubber refueling hose consists of, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer; or, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer. The spiral steel wire layer is formed by spirally winding steel wire; The fiber braided layer is woven from one or more of aramid fibers, polyester fibers, and vinylon fibers; The wear-resistant protective layer is made of ultra-high molecular weight polyethylene film.

2. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1, characterized in that: The thickness of the inner rubber layer is 2.0 mm to 3.5 mm; the inner rubber material used to prepare the inner rubber layer is one or a combination of several of chloroprene rubber, nitrile rubber, nitrile PVC rubber, and HNBR rubber, preferably nitrile rubber.

3. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1 or 2, characterized in that: The inner layer rubber compound used to prepare the inner rubber layer is composed of the following components in parts by weight: 100 parts nitrile rubber, 40-100 parts natural gas semi-reinforcing carbon black, 50-80 parts kaolin, 20-50 parts calcium carbonate, 5-30 parts dioctyl sebacate, 3-7 parts zinc oxide, 0.5-5 parts stearic acid, 4-6 parts antioxidant, 1-3 parts sulfur, and 1-3 parts accelerator; the antioxidant is a combination of antioxidant RD, antioxidant MB, and antioxidant 4010NA in a weight ratio of 1:1:3; the accelerator is a combination of accelerator D and accelerator MBTS in a weight ratio of 1:

4.

4. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1, characterized in that: The spiral steel wire layer is formed by winding copper-plated steel wire with a diameter of 0.7mm to 1.2mm with a pitch of 15mm to 30mm; preferably, the diameter of the copper-plated steel wire is 0.9mm.

5. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1, characterized in that: The intermediate rubber layer is made by extrusion or winding process, preferably by winding process using 1 to 2 layers of intermediate rubber sheet, and more preferably by winding process using 2 layers of intermediate rubber sheet; the thickness of the intermediate rubber sheet is 0.4 mm to 1.0 mm, preferably 0.5 mm; the intermediate rubber material for preparing the intermediate rubber layer is the same as the inner rubber material for preparing the inner rubber layer.

6. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1, characterized in that: The fiber braided layer is woven using impregnated polyester yarn in a braiding method of 3 to 6 strands per spindle of 48 spindles, preferably using impregnated polyester yarn in a braiding method of 4 strands per spindle of 48 spindles; the impregnated polyester yarn is 2000D to 4000D impregnated polyester yarn, preferably 4000D impregnated polyester yarn.

7. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1, characterized in that: The thickness of the outer adhesive layer is 1.0 mm to 2.0 mm; When the negative pressure rubber refueling hose comprises, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer, the outer rubber material used to prepare the outer rubber layer is one or a combination of several of the following: chloroprene rubber, nitrile rubber, nitrile PVC rubber, HNBR rubber, and natural rubber, preferably chloroprene rubber; the transition layer rubber material used to prepare the transition layer is one or a combination of several of the following: ethylene propylene diene monomer (EPDM) rubber, butadiene rubber, and natural rubber; and the thickness of the transition layer is 0.2 mm to 0.6 mm. When the anti-negative pressure rubber refueling hose consists of an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer from the inside out, the outer rubber material used to prepare the outer rubber layer is one or a combination of several of EPDM rubber, butadiene rubber, and natural rubber.

8. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1 or 7, characterized in that: When the aforementioned anti-negative pressure rubber refueling hose consists of, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer, the outer rubber layer is composed of the following components in parts by weight: 100 parts chloroprene rubber, 1-3 parts stearic acid, 1-3 parts protective wax 654, 2-4 parts antioxidant 4010NA, 1-3 parts antioxidant OCTAMINE, 30-40 parts plasticizer DOS, 40-55 parts carbon black N550, 30-40 parts carbon black N774, and 3-4 parts vulcanizing agent STRUKTOL ZIMAG. 29 / 43, 1-3 parts accelerator DM; The transition layer rubber compound for preparing the transition layer is composed of the following components in parts by weight: 100 parts base material, 3-5.5 parts antioxidant, 60-120 parts carbon black, 10-30 parts silica, 5 parts zinc oxide, 1.5-2 parts stearic acid, 5-20 parts plasticizer, 3-5 parts coupling agent, 5-8 parts binder, 2-5 parts sulfur, 1-2 parts accelerator; wherein, the base material is one or more of EPDM rubber, natural rubber, and butadiene rubber; preferably, the base material is a combination of EPDM rubber and natural rubber, or a combination of EPDM rubber and butadiene rubber, or a combination of EPDM rubber, natural rubber, and butadiene rubber; more preferably, the base material is a combination of EPDM rubber and natural rubber in a weight ratio of 1:1, or a combination of EPDM rubber and butadiene rubber in a weight ratio of... The composition is a combination with a weight ratio of 1:1, or a combination of EPDM rubber, natural rubber, and butadiene rubber in a weight ratio of (1-2):1:(1-2); the antioxidant is one or more of antioxidant RD, antioxidant 4010NA, and protective wax, preferably a combination of antioxidant RD, antioxidant 4010NA, and protective wax in a weight ratio of 1.5:(1-2):2; the carbon black is one or more of carbon black N550, carbon black N774, and natural gas semi-reinforcing carbon black, preferably carbon black N550; the plasticizer is one or more of plasticizer DOTP, plasticizer DOS, and plasticizer TP-90B, preferably plasticizer DOS; the accelerator is accelerator CZ; the coupling agent is coupling agent silicone 69; the adhesive is a combination of adhesive A and adhesive RS in a weight ratio of 1:1.

5. When the anti-negative pressure rubber refueling hose consists of an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer from the inside out, the outer rubber layer is composed of the following components in parts by weight: 100 parts base material, 3-5.5 parts antioxidant, 60-120 parts carbon black, 10-30 parts silica, 5 parts zinc oxide, 1.5-2 parts stearic acid, 5-20 parts plasticizer, 3-5 parts coupling agent, 5-8 parts binder, 2-5 parts sulfur, and 1-2 parts accelerator; wherein the base material is one or more of EPDM rubber, natural rubber, and butadiene rubber; preferably, the base material is a combination of EPDM rubber and natural rubber, or a combination of EPDM rubber and butadiene rubber, or a combination of EPDM rubber, natural rubber, and butadiene rubber; more preferably, the base material is EPDM rubber and natural rubber in a weight ratio of 1:

1. The composition includes, but is not limited to, a combination of EPDM rubber and butadiene rubber in a weight ratio of 1:1, or a combination of EPDM rubber, natural rubber, and butadiene rubber in a weight ratio of (1-2):1:(1-2); the antioxidant is one or more of antioxidant RD, antioxidant 4010NA, and protective wax, preferably a combination of antioxidant RD, antioxidant 4010NA, and protective wax in a weight ratio of 1.5:(1-2):2; the carbon black is one or more of carbon black N550, carbon black N774, and natural gas semi-reinforcing carbon black, preferably carbon black N550; the plasticizer is one or more of plasticizer DOTP, plasticizer DOS, and plasticizer TP-90B, preferably plasticizer DOS; the accelerator is accelerator CZ; the coupling agent is coupling agent silicon 69; and the adhesive is a combination of adhesive A and adhesive RS in a weight ratio of 1:1.

5.

9. The ultra-wear-resistant, long-life, highly flexible, lightweight, negative pressure-resistant rubber refueling hose according to claim 1, characterized in that: The thickness of the ultra-high molecular weight polyethylene film is 0.05 mm to 0.3 mm, preferably 0.15 mm.

10. A method for preparing the ultra-wear-resistant, long-life, highly flexible, lightweight anti-negative pressure rubber refueling hose according to claim 1, wherein the anti-negative pressure rubber refueling hose comprises, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, a transition layer, and a wear-resistant protective layer, comprising the following steps: Step (1): Set the temperatures of each zone of the extruder to 60±5℃, 60±5℃, 65±5℃, and 75±5℃ respectively. Feed the inner layer rubber material into the feed port of the extruder, insert the mandrel into the rubber extruder, and extrude the inner layer rubber material under vacuum conditions to obtain an intermediate tube blank containing an inner rubber layer. Step (2): Place the intermediate tube blank with the mandrel on the wire winding machine, and wind the wire evenly in a spiral shape to the outside of the inner rubber layer. Set the pitch to 15mm to 30mm, and adjust the winding tension until the wire is embedded in the rubber layer to a depth of 0.3 to 0.5mm to obtain an intermediate tube blank containing a spiral wire layer. Step (3): Insert the intermediate tube blank with the mandrel into the medium rubber film winding machine, so that the two layers of medium rubber film are wound evenly in opposite directions to cover the outside of the spiral steel wire layer. Then, insert it into the cloth tape winding machine again to wind and unwind the cloth, so that the medium rubber film and the spiral steel wire layer are tightly bonded to obtain an intermediate tube blank containing the medium rubber layer. Step (4): Insert the intermediate tube blank with the mandrel into the braiding machine to braid the reinforcing layer and obtain an intermediate tube blank containing the braided layer. Step (5): Set the temperatures of each zone of the extruder to 40±5℃, 40±5℃, 50±5℃, and 55±5℃ respectively. Feed the outer layer rubber material into the feed port of the extruder, insert the intermediate tube blank with the mandrel into the rubber extruder, and extrude the outer layer rubber material under vacuum conditions to obtain an intermediate tube blank containing the outer rubber layer. Step (6): Set the temperatures of each zone of the extruder to 50±5℃, 60±5℃, 50±5℃, and 70±5℃ respectively. Feed the transition layer rubber into the feed port of the extruder, insert the intermediate tube blank with the mandrel into the rubber extruder, and extrude the transition layer rubber under vacuum conditions to obtain an intermediate tube blank containing the transition layer. Step (7): Insert the intermediate tube blank with the mandrel into the film winding machine, and wind the ultra-high molecular weight polyethylene film to the outside of the transition adhesive layer. The winding overlap rate is 50%, and a final tube blank containing a wear-resistant protective layer is obtained. Step (8): Place the end tube blank with the mandrel on the winding and unwinding machine and wrap the water-coated cloth around the end tube blank; Step (9): The final pipe blank wrapped with water-coated cloth is subjected to high-temperature steam vulcanization, and the cloth is unwrapped to obtain the anti-negative pressure rubber refueling hose. When the aforementioned anti-negative pressure rubber refueling hose consists of, from the inside out, an inner rubber layer, a spiral steel wire layer, a middle rubber layer, a fiber braided layer, an outer rubber layer, and a wear-resistant protective layer, the following steps are included: Step (1): Set the temperatures of each zone of the extruder to 60±5℃, 60±5℃, 65±5℃, and 75±5℃ respectively. Feed the inner layer rubber material into the feed port of the extruder, insert the mandrel into the rubber extruder, and extrude the inner layer rubber material under vacuum conditions to obtain an intermediate tube blank containing an inner rubber layer. Step (2): Place the intermediate tube blank with the mandrel on the wire winding machine, and wind the wire evenly in a spiral shape to the outside of the inner rubber layer. Set the pitch to 15mm to 30mm, and adjust the winding tension until the wire is embedded in the rubber layer to a depth of 0.3 to 0.5mm to obtain an intermediate tube blank containing a spiral wire layer. Step (3): Insert the intermediate tube blank with the mandrel into the medium rubber film winding machine, so that the two layers of medium rubber film are wound evenly in opposite directions to cover the outside of the spiral steel wire layer. Then, insert it into the cloth tape winding machine again to wind and unwind the cloth, so that the medium rubber film and the spiral steel wire layer are tightly bonded to obtain an intermediate tube blank containing the medium rubber layer. Step (4): Insert the intermediate tube blank with the mandrel into the braiding machine to braid the reinforcing layer and obtain an intermediate tube blank containing the braided layer. Step (5): Set the temperatures of each zone of the extruder to 50±5℃, 60±5℃, 50±5℃, and 70±5℃ respectively. Feed the outer layer rubber material into the feed port of the extruder, insert the intermediate tube blank with the mandrel into the rubber extruder, and extrude the outer layer rubber material under vacuum conditions to obtain an intermediate tube blank containing the outer rubber layer. Step (6): Insert the intermediate tube blank with the mandrel into the film winding machine, and wind the ultra-high molecular weight polyethylene film to the outside of the transition adhesive layer. The winding overlap rate is 50%, and a final tube blank containing a wear-resistant protective layer is obtained. Step (7): Place the end tube blank with the mandrel on the winding and unwinding machine, and wrap the water-coated cloth around the end tube blank; Step (8): The final pipe blank wrapped with water-coated cloth is subjected to high-temperature steam vulcanization and the cloth is unwrapped to obtain an ultra-wear-resistant, high burst strength, lightweight negative pressure resistant rubber refueling hose.