Floating type hose and preparation method thereof

Abstract

The invention provides a floating hose and a preparation method thereof, and belongs to the technical field of floating hoses, the floating hose comprises an inner rubber layer and an outer structural layer, the inner rubber layer comprises the following components in parts by weight: 100 parts of nitrile rubber, 38-42 parts of porous organic filler, 3-6 parts of an antioxidant, 2-3 parts of a vulcanizing agent, 1.5-2.5 parts of an emulsifier and 0.8-1.2 parts of a vulcanizing agent; wherein the porous organic filler is prepared by modifying porous talcum powder with tetraethoxysilane and then compounding with carboxy nitrile rubber. According to the floating hose provided by the invention, the inner rubber layer has relatively high wear resistance and relatively strong adhesive property, so that the problems encountered during production of the floating hose are solved, and experience is accumulated for preparation of similar products.

Description

Technical Field

[0001] The present invention belongs to the technical field of floating pipes, and particularly relates to a floating hose and a preparation method thereof. Background Art

[0002] The floating hose is an indispensable part of the offshore floating transportation system. In the offshore environment, the hose needs to bear various loads such as internal friction, tensile load, torsional load, and bending load. The selection of the pipe body material is of great significance for the service life of the hose and ensuring the safety of external transportation.

[0003] The multi-layer structure of the floating hose is in a vulcanized form, that is, the layers are bonded together and relatively have no slip. From the inside to the outside, they are an inner rubber layer, a first reinforcing layer, a middle rubber layer, a second reinforcing layer, and an outer rubber layer. In the preparation of the inner rubber layer, nitrile rubber (NBR) with excellent oil resistance is commonly used as the main rubber material. By adding inorganic fillers, the material cost can be reduced, the hardness of the rubber layer can be increased, the wear resistance can be improved, and the physical properties of the rubber matrix can be improved. However, due to the limited fluidity and penetration ability of nitrile rubber, and the surface of the filler has a certain inertness, it is difficult for the filler particles to be evenly dispersed, resulting in local agglomeration, causing stress concentration. When bearing external forces, the bonding strength between the inner rubber layer and the outer layer structure of the floating hose is reduced, and delamination and detachment are likely to occur, affecting the integrity and service life of the floating hose. Summary of the Invention

[0004] To solve the problems in the background art, the present invention provides a floating hose and a preparation method thereof, which can effectively solve the dispersion problem of the filler. The prepared floating hose has high wear resistance and strong bonding performance.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A floating hose, the structure of which includes an inner rubber layer and an external structure layer. The inner rubber layer includes the following components in parts by weight: 100 parts of nitrile rubber, 38 - 42 parts of porous organic filler, 3 - 6 parts of antioxidant, 2 - 3 parts of vulcanization aid, 1.5 - 2.5 parts of emulsifier, and 0.8 - 1.2 parts of vulcanizing agent. The porous organic filler is prepared by modifying porous talc powder with tetraethyl orthosilicate and then compounding carboxyl nitrile rubber.

[0007] Further, the preparation of the porous organic filler includes the following content:

[0008] A1. Pour 10 parts of talc powder with a particle size range of 1000 - 2000 mesh into a hydrochloric acid solution with a mass concentration of 3 - 4 mol / L, soak for 3 - 5 h, filter, and dry to obtain porous talc powder particles;

[0009] A2. Porous talc particles and 2-3 parts of ethyl orthosilicate were added to 40-60 parts of an 80-90% ethanol aqueous solution, uniformly dispersed, heated to 40-60°C, and stirred under vacuum for 30-60 minutes. Then, 4-6 parts of 0.5-1 mol / L ammonia solution were added dropwise. After the addition was complete, the mixture was stirred for 2-3 hours, filtered, and dried to obtain a modified porous filler.

[0010] A3. At 50-70°C, add carboxylated nitrile rubber to dichloromethane to prepare a carboxylated nitrile rubber solution with a mass solubility of 8-12%. Add the modified porous filler to the carboxylated nitrile rubber solution, stir under vacuum for 2-3 hours, filter, and dry to obtain a porous organic filler.

[0011] Furthermore, the antioxidant is one of antioxidant 1076 and antioxidant 1024, or a mixture of the two.

[0012] Furthermore, the vulcanizing agent is sulfur.

[0013] Furthermore, the vulcanization aid is one or a mixture of two or more of triallyl isocyanurate, N,N-m-phenylene bismaleimide and triallyl cyanurate.

[0014] Furthermore, the emulsifier is one or a mixture of two or more of sodium dodecylbenzenesulfonate, sodium lauryl sulfate and fatty alcohol polyoxyethylene ether.

[0015] A method for preparing a floating hose comprises the following steps:

[0016] Insert one end of the tube core into the inner tube blank, and introduce air source into the other end to make the inner tube blank bulge. Control the air pressure to 8-12Kgf / cm 2 The raw materials of the inner rubber layer are plasticized on a rubber mixer. After mixing, the prepared inner rubber layer film is filled into the inner tube blank to form an inner rubber layer blank. The steel belt is wrapped around the inner rubber layer blank, and then wrapped with the outer rubber layer film to form an outer structural layer blank. The outer structural layer blank is tightly wrapped with a wetted water-wrapped cloth and vulcanized. After vulcanization is completed, a floating hose is obtained.

[0017] This application has the following beneficial effects:

[0018] 1. The present invention provides a floating hose and a preparation method thereof. The inner rubber layer of the floating hose has high wear resistance and strong bonding properties, overcoming the difficulties encountered in the production of floating hoses and accumulating experience for the preparation of similar products.

[0019] 2. The porous organic filler provided by the present invention first soaks talcum powder in a hydrochloric acid solution to endow it with a porous structure and a large specific surface area, which can increase the effective contact area between talcum powder and the colloidal material, thereby improving the bonding effect between the two and enhancing the bonding performance of the adhesive layer.

[0020] 3. By introducing tetraethyl orthosilicate, a large number of hydroxyl groups are formed in the pores of talcum powder, which is beneficial to improving the compatibility of talcum powder in the rubber matrix material, enhancing the uniform dispersion ability and reinforcing effect of talcum powder, thereby improving the wear resistance of the adhesive layer material and reducing the adverse effect of the addition of talcum powder on the bonding performance of the adhesive layer material. Finally, by adding carboxyl nitrile rubber, it can combine with the porous organic filler to form a strong adsorption effect on it, thereby effectively filling and wrapping the pores, enhancing the interaction between the porous organic filler and the rubber matrix, forming a core-shell structure with talcum powder as the hard core and carboxyl nitrile rubber as the soft shell, and realizing uniform stress transfer at the bonding interface, thus significantly improving the overall bonding performance of the adhesive layer material. Specific Embodiments

[0021] The following further elaborates on the present application with reference to embodiments.

[0022] The raw materials of the embodiments and comparative examples of the present application are all commercially available as normal, unless otherwise specified.

[0023] Example 1

[0024] A floating hose, whose structure includes an inner rubber layer and an external structure layer. The specific preparation method is as follows: Insert one end of the tube core into the inner tube blank, and introduce a gas source into the other end to inflate the inner tube blank, controlling the air pressure at 10Kgf / cm 2 , Plasticize 100 parts of nitrile rubber, 40 parts of porous organic filler, 4.5 parts of antioxidant, 2.5 parts of vulcanization aid triallyl isocyanurate, 2 parts of sodium dodecylbenzenesulfonate and 1 part of sulfur, the raw materials of the inner rubber layer on a rubber mill. After mixing, fill the prepared inner rubber layer film into the inner tube blank to form an inner rubber layer blank. Wind the steel belt around the inner rubber layer blank, and then wrap the outer rubber layer film to form an external structure layer blank. Wrap the external structure layer blank tightly with a wet water cloth and conduct vulcanization at a vulcanization temperature of 150°C and a vulcanization pressure of 15MPa for 10 minutes. After vulcanization is completed, a floating hose is obtained.

[0025] The preparation of the porous organic filler includes the following steps:

[0026] A1. Pour 10 parts of talcum powder with a particle size of 1500 mesh into a hydrochloric acid solution with a mass concentration of 3.5mol / L, soak for 4h, filter, and dry to obtain porous talcum powder particles;

[0027] A2. Add the porous talcum powder particles and 2.5 parts of tetraethyl orthosilicate to 50 parts of an ethanol aqueous solution with a mass fraction of 85%, disperse evenly, heat to 50 °C, stir under vacuum for 45 min, then dropwise add 5 parts of 0.8 mol / L ammonia water. After the addition is complete, stir for 2.5 h, filter, and dry to obtain the modified porous filler.

[0028] A3. Under the condition of 60 °C, add carboxyl nitrile rubber to dichloromethane to prepare a carboxyl nitrile rubber solution with a mass concentration of 10%. Add the modified porous filler to the carboxyl nitrile rubber solution, stir under vacuum for 2.5 h, filter, and dry to obtain the porous organic filler.

[0029] Example 2

[0030] A floating hose, whose structure includes an inner rubber layer and an external structure layer. The specific preparation method is as follows: Insert one end of the mandrel into the inner tube blank, and introduce a gas source into the other end to inflate the inner tube blank. Control the air pressure at 10 Kgf / cm 2 , Plasticize 100 parts of nitrile rubber, 40 parts of porous organic filler, 6 parts of antioxidant 1024, 3 parts of N, N - m - phenylene bismaleimide, 2.5 parts of fatty alcohol polyoxyethylene ether, and 0.8 parts of sulfur, which are the raw materials of the inner rubber layer, on a rubber mill. After mixing, fill the prepared inner rubber layer film into the inner tube blank to form an inner rubber layer blank. Wind the steel belt around the inner rubber layer blank, and then wrap the outer rubber layer film to form an external structure layer blank. Wrap the external structure layer blank tightly with a wet water cloth and carry out vulcanization at a vulcanization temperature of 150 °C and a vulcanization pressure of 15 MPa for 10 minutes. After the vulcanization is completed, the floating hose is obtained.

[0031] The preparation of the porous organic filler includes the following steps:

[0032] A1. Pour 10 parts of talcum powder with a particle size range of 2000 mesh into a hydrochloric acid solution with a mass concentration of 4 mol / L, soak for 3 h, filter, and dry to obtain the porous talcum powder particles.

[0033] A2. Add the porous talcum powder particles and 2 parts of tetraethyl orthosilicate to 60 parts of an ethanol aqueous solution with a mass fraction of 80%, disperse evenly, heat to 40 °C, stir under vacuum for 60 min, then dropwise add 6 parts of 1 mol / L ammonia water. After the addition is complete, stir for 2 h, filter, and dry to obtain the modified porous filler.

[0034] A3. Under the condition of 70 °C, add carboxyl nitrile rubber to dichloromethane to prepare a carboxyl nitrile rubber solution with a mass concentration of 12%. Add the modified porous filler to the carboxyl nitrile rubber solution, stir under vacuum for 3 h, filter, and dry to obtain the porous organic filler.

[0035] Example 3

[0036] A floating hose, whose structure includes an inner rubber layer and an external structure layer, and the specific preparation method is as follows: Insert one end of the tube core into the inner tube blank, and introduce air source into the other end to make the inner tube blank bulge, and control the air pressure at 8Kgf / cm 2 , Plasticize 100 parts of nitrile rubber, 38 parts of porous organic filler, 3 parts of antioxidant 1024, 2 parts of N, N-m-phenylene bismaleimide, 1.5 parts of sodium dodecyl sulfate and 0.8 part of sulfur, the raw materials of the inner rubber layer on a rubber mill. After mixing, fill the prepared inner rubber layer film into the inner tube blank to form an inner rubber layer blank. Wind the steel strip around the inner rubber layer blank, and then wrap the outer rubber layer film to form an external structure layer blank. Wrap the external structure layer blank tightly with a wet water cloth and carry out vulcanization. Vulcanize at a vulcanization temperature of 150°C and a vulcanization pressure of 15MPa for 10 minutes. After vulcanization is completed, a floating hose is obtained.

[0037] The preparation of the porous organic filler includes the following contents:

[0038] A1. Pour 10 parts of talcum powder with a particle size of 1000 mesh into a hydrochloric acid solution with a mass concentration of 3mol / L, soak for 3h, filter, and dry to obtain porous talcum powder particles;

[0039] A2. Add the porous talcum powder particles and 2 parts of tetraethyl orthosilicate to 40 parts of an ethanol aqueous solution with a mass fraction of 80%, disperse evenly, heat to 40°C, stir under vacuum for 60min, then dropwise add 4 parts of 0.5mol / L ammonia water, and stir for 2h after dropping, filter, and dry to obtain a modified porous filler;

[0040] A3. At 50°C, add carboxy nitrile rubber to dichloromethane to prepare a carboxy nitrile rubber solution with a mass concentration of 8%. Add the modified porous filler to the carboxy nitrile rubber solution, stir under vacuum for 2h, filter, and dry to obtain a porous organic filler.

[0041] Example 4

[0042] A floating hose, whose structure includes an inner rubber layer and an external structure layer, and the specific preparation method is as follows: Insert one end of the tube core into the inner tube blank, and introduce air source into the other end to make the inner tube blank bulge, and control the air pressure at 12Kgf / cm 2 , Plasticize 100 parts of nitrile rubber, 42 parts of porous organic filler, 6 parts of antioxidant 1076, 3 parts of triallyl cyanurate, 2.5 parts of fatty alcohol polyoxyethylene ether and 1.2 parts of sulfur, the raw materials of the inner rubber layer on a rubber mill. After mixing, fill the prepared inner rubber layer film into the inner tube blank to form an inner rubber layer blank. Wind the steel strip around the inner rubber layer blank, and then wrap the outer rubber layer film to form an external structure layer blank. Wrap the external structure layer blank tightly with a wet water cloth and carry out vulcanization. Vulcanize at a vulcanization temperature of 150°C and a vulcanization pressure of 15MPa for 10 minutes. After vulcanization is completed, a floating hose is obtained.

[0043] The preparation of the porous organic filler includes the following steps:

[0044] A1. Pour 10 parts of talcum powder with a particle size range of 2000 mesh into a hydrochloric acid solution with a mass concentration of 4 mol / L, soak for 5 h, filter, and dry to obtain porous talcum powder particles;

[0045] A2. Add the porous talcum powder particles and 3 parts of tetraethyl orthosilicate to 60 parts of an ethanol aqueous solution with a mass fraction of 90%, disperse evenly, heat to 60 °C, stir under vacuum for 60 min, then dropwise add 6 parts of 1 mol / L ammonia water, stir for 3 h after dropping, filter, and dry to obtain a modified porous filler;

[0046] A3. At 70 °C, add carboxy nitrile rubber to dichloromethane to prepare a carboxy nitrile rubber solution with a mass concentration of 12%, add the modified porous filler to the carboxy nitrile rubber solution, stir under vacuum for 3 h, filter, and dry to obtain the porous organic filler.

[0047] Example 5

[0048] A floating hose, whose structure includes an inner rubber layer and an outer structural layer. The specific preparation method is as follows: Insert one end of the tube core into the inner tube blank, and introduce a gas source into the other end to inflate the inner tube blank, controlling the air pressure at 8 Kgf / cm 2 , Plasticize 100 parts of nitrile rubber, 42 parts of porous organic filler, 3 parts of antioxidant 1024, 3 parts of N, N-m-phenylene bismaleimide, 2.5 parts of sodium dodecyl sulfate, and 1.2 parts of sulfur, the raw materials of the inner rubber layer, on a rubber mill, and after mixing, fill the prepared inner rubber layer film into the inner tube blank to form an inner rubber layer blank. Wind the steel belt around the inner rubber layer blank, and then wrap the outer rubber layer film to form an outer structural layer blank. Wrap the outer structural layer blank tightly with a wet water cloth and perform vulcanization at a vulcanization temperature of 150 °C and a vulcanization pressure of 15 MPa for 10 minutes. After vulcanization is completed, the floating hose is obtained.

[0049] The preparation of the porous organic filler includes the following steps:

[0050] A1. Pour 10 parts of talcum powder with a particle size range of 2000 mesh into a hydrochloric acid solution with a mass concentration of 3 mol / L, soak for 5 h, filter, and dry to obtain porous talcum powder particles;

[0051] A2. Add the porous talcum powder particles and 2 parts of tetraethyl orthosilicate to 60 parts of an ethanol aqueous solution with a mass fraction of 90%, disperse evenly, heat to 4​​0 °C, stir under vacuum for 30 min, then dropwise add 4 parts of 1 mol / L ammonia water, stir for 3 h after dropping, filter, and dry to obtain a modified porous filler;

[0052] A3. At 50 °C, carboxylated nitrile rubber is added to dichloromethane to prepare a carboxylated nitrile rubber solution with a mass concentration of 8%. The modified porous filler is added to the carboxylated nitrile rubber solution, stirred under vacuum for 3 h, filtered, and dried to obtain a porous organic filler.

[0053] Comparative Example 1

[0054] The difference between this comparative example and Example 1 is only that in the preparation of the porous organic filler, talcum powder was not treated with hydrochloric acid solution, and the specific content is as follows:

[0055] The preparation of the porous organic filler includes the following content:

[0056] A1. Pour 10 parts of talcum powder with a particle size of 1500 mesh into water, soak for 4 h, filter, and dry to obtain porous talcum powder particles;

[0057] A2. Add the porous talcum powder particles and 2.5 parts of tetraethyl orthosilicate to 50 parts of an ethanol aqueous solution with a mass fraction of 85%, disperse evenly, heat to 50 °C, stir under vacuum for 45 min, then dropwise add 5 parts of 0.8 mol / L ammonia water, stir for 2.5 h after dropping, filter, and dry to obtain a modified porous filler;

[0058] A3. At 60 °C, carboxylated nitrile rubber is added to dichloromethane to prepare a carboxylated nitrile rubber solution with a mass concentration of 10%. The modified porous filler is added to the carboxylated nitrile rubber solution, stirred under vacuum for 2.5 h, filtered, and dried to obtain a porous organic filler.

[0059] Comparative Example 2

[0060] The difference between this comparative example and Example 1 is only that in the preparation of the porous organic filler, tetraethyl orthosilicate was not added, and the specific content is as follows:

[0061] A1. Pour 10 parts of talcum powder with a particle size of 1500 mesh into a hydrochloric acid solution with a mass concentration of 3.5 mol / L, soak for 4 h, filter, and dry to obtain porous talcum powder particles;

[0062] A2. Add the porous talcum powder particles and 2.5 parts of tetraethyl orthosilicate to 50 parts of an ethanol aqueous solution with a mass fraction of 85%, disperse evenly, heat to 50 °C, stir under vacuum for 45 min, then dropwise add 5 parts of 0.8 mol / L ammonia water, stir for 2.5 h after dropping, filter, and dry to obtain a modified porous filler;

[0063] A3. At 60 °C, carboxylated nitrile rubber is added to dichloromethane to prepare a carboxylated nitrile rubber solution with a mass concentration of 10%. The modified porous filler is added to the carboxylated nitrile rubber solution, stirred under vacuum for 2.5 h, filtered, and dried to obtain a porous organic filler.

[0064] Comparative Example 3

[0065] The difference between this comparative example and Example 1 is only that in the preparation of the porous organic filler, carboxylated nitrile rubber is replaced by nitrile rubber, which specifically includes the following:

[0066] A1. Pour 10 parts of talcum powder with a particle size of 1500 mesh into a hydrochloric acid solution with a mass concentration of 3.5 mol / L, soak for 4 h, filter, and dry to obtain porous talcum powder particles;

[0067] A2. Add the porous talcum powder particles and 2.5 parts of tetraethyl orthosilicate to 50 parts of an ethanol aqueous solution with a mass fraction of 85%, disperse evenly, heat to 50 °C, stir under vacuum for 45 min, then dropwise add 5 parts of 0.8 mol / L ammonia water, stir for 2.5 h after dropping, filter, and dry to obtain a modified porous filler;

[0068] A3. At 60 °C, add nitrile rubber to dichloromethane to prepare a nitrile rubber solution with a mass concentration of 10%. Add the modified porous filler to the nitrile rubber solution, stir under vacuum for 2.5 h, filter, and dry to obtain a porous organic filler.

[0069] Comparative Example 4

[0070] The difference between this comparative example and Example 1 is only that in the preparation of the porous organic filler, tetraethyl orthosilicate is not added, and at the same time, carboxylated nitrile rubber is replaced by nitrile rubber.

[0071] Effect Proof

[0072] Perform performance tests on the inner rubber layer materials in Examples 1-5 and Comparative Examples 1-4. Among them, for the bonding performance, refer to GB / T7760-2003 to detect the peel strength of the test material, and for the wear resistance, detect the wear amount of the test material according to the abrasion in accordance with GB / T 9867-2008.

[0073]

[0074]

[0075] Result Analysis

[0076] Analyze Examples 1-5 and Comparative Examples 1-4, and combined with the data in Table 1, it can be seen that the inner rubber layer material of the floating hose prepared by the present invention has high wear resistance and strong bonding performance. The specific analysis is as follows:

[0077] By analyzing Comparative Example 1 and Example 1, in the preparation of the porous organic filler, talc powder is soaked in hydrochloric acid solution to obtain a porous structure and a large specific surface area, which can significantly improve the bonding performance of the inner rubber layer material; by analyzing Comparative Examples 2-4 and Example 1, the addition of tetraethyl orthosilicate is beneficial to improving the compatibility of talc powder in the rubber matrix, enhancing the uniform dispersion ability and strengthening effect of talc powder, thereby improving the wear resistance of the rubber layer material and reducing the adverse effect of the addition of talc powder on the bonding performance of the rubber layer. By adding carboxy nitrile rubber, the wear resistance of the rubber matrix can be enhanced, and at the same time, it can combine with the porous organic filler to significantly improve the overall bonding performance of the rubber layer material.

[0078] In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any appropriate manner without contradiction. To avoid unnecessary repetition, the present invention will not separately describe various possible combination methods.

[0079] Furthermore, any combination can be made between different embodiments of the present invention, as long as it does not violate the idea of the present invention, it should also be regarded as the content disclosed by the present invention.

Claims

1. A floating hose, the structure of which includes an inner rubber layer and an outer structural layer, characterized in that, The inner rubber layer comprises the following components in parts by weight: 100 parts of nitrile rubber, 38 - 42 parts of porous organic filler, 3 - 6 parts of antioxidant, 2 - 3 parts of vulcanization aid, 1.5 - 2.5 parts of emulsifier, and 0.8 - 1.2 parts of vulcanizing agent, wherein the porous organic filler is prepared by modifying porous talc powder with tetraethyl orthosilicate and then compounding with carboxy nitrile rubber.

2. The floating hose according to claim 1, wherein The preparation of the porous organic filler includes the following steps: A1. Pour 10 parts of talc powder with a particle size range of 1000 - 2000 mesh into a hydrochloric acid solution with a mass concentration of 3 - 4 mol / L, soak for 3 - 5 h, filter, and dry to obtain porous talc powder particles; A2. Add the porous talc powder particles and 2 - 3 parts of tetraethyl orthosilicate to 40 - 60 parts of an ethanol aqueous solution with a mass fraction of 80 - 90%, disperse evenly, heat to 40 - 60 °C, stir under vacuum for 30 - 60 min, then dropwise add 4 - 6 parts of 0.5 - 1 mol / L ammonia water, stir for 2 - 3 h after dropping, filter, and dry to obtain the modified porous filler; A3. Under the condition of 50 - 70 °C, add carboxy nitrile rubber to dichloromethane to prepare a carboxy nitrile rubber solution with a mass concentration of 8 - 12%, add the modified porous filler to the carboxy nitrile rubber solution, stir under vacuum for 2 - 3 h, filter, and dry to obtain the porous organic filler.

3. The floating hose according to claim 1, characterized in that, The antioxidant is one or a mixture of two of antioxidant 1076 and antioxidant 1024.

4. The floating hose according to claim 1, characterized in that, The vulcanizing agent is sulfur.

5. The floating hose according to claim 1, characterized in that, The vulcanization aid is one or a mixture of two or more of triallyl isocyanurate, N, N - m - phenylene bismaleimide, and triallyl cyanurate.

6. The floating hose according to claim 1, wherein, The emulsifier is one or a mixture of two or more of sodium dodecyl benzene sulfonate, sodium dodecyl sulfate, and fatty alcohol polyoxyethylene ether.

7. A method for preparing a floating hose, which is used to prepare the floating hose according to any one of claims 1-6, characterized in that, It includes the following steps: insert one end of the die into the inner tube blank, and introduce a gas source into the other end to make the inner tube blank bulge, and control the air pressure at 8 - 12Kgf / cm 2 , plasticize the raw material of the inner rubber layer on a rubber mill, after mixing, fill the prepared inner rubber layer film into the inner tube blank to form an inner rubber layer blank, wind the steel strip around the inner rubber layer blank, and then wrap the outer rubber layer film to form an outer structural layer blank, tightly wrap the outer structural layer blank with a wet water cloth, and carry out vulcanization. After the vulcanization is completed, a floating hose is obtained.

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