A method for making a deep water airbag with a stable shape

Abstract

The present application belongs to the technical field of air bags, and discloses a deep-water air bag manufacturing method with stable shape. The method adopts overall circular weaving of aramid fiber, and performs shaping treatment through high-temperature and high-pressure shaping process, so that the high-density aramid cloth tube reaches the required shape and size. Then, chemical treatment is performed on the fiber under high-temperature conditions, so that the fiber is permanently deformed, thereby obtaining stable shape and size. The method adopts two components of natural rubber and synthetic rubber, and performs mixing, calendering, extrusion and vulcanization processes to manufacture an overall annular air bag matched with the high-density aramid cloth tube. Then, the overall annular air bag and the high-density aramid cloth tube are compounded together to manufacture a deep-water air bag. The deep-water air bag manufactured through the above method overcomes many defects existing in current processes, so that the quality of each part of the product is uniform, the overall performance is stable, and the product meets the use requirements of high-pressure resistance, low expansion, shape stability and good air tightness.

Description

Technical Field

[0001] This invention belongs to the field of airbag technology, specifically relating to a method for manufacturing a shape-stable deep-sea airbag. Background Technology

[0002] As a component of underwater equipment, the deep-water airbag is mainly installed in the underwater equipment and filled with high-pressure air at a certain pressure. When the underwater equipment is working in a high-pressure underwater environment, the deep-water airbag provides effective support, shock absorption, noise reduction and protection for the underwater equipment.

[0003] The existing manufacturing process for deep-water airbags involves bonding various components together. This significantly reduces the pressure resistance and airtightness of the bonded areas. Furthermore, due to the inherent properties of synthetic fibers and the weaving process, the long filaments of synthetic fibers tend to curl during the weaving process, making them prone to expansion and deformation under stress. As a result, the products currently used in various applications generally suffer from defects such as low pressure resistance, large deformation, rapid pressure drop, and poor dimensional stability. They can only be used in shallow water environments under low pressure conditions. In high-pressure and deep-water environments, they are prone to dents, bursts, deformation, and pressure drops, thus losing their usability. Summary of the Invention

[0004] In view of the problems mentioned in the background art above, the purpose of this invention is to provide a method for manufacturing a deep-sea airbag with a stable shape.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A method for manufacturing a shape-stable deep-water airbag includes the following steps.

[0007] S1. The integral annular airbag is manufactured using integral extrusion and vulcanization processes;

[0008] S2. Using aramid fiber as raw material, a high-density aramid fabric tube is made in an integral circular weave form, and the high-density aramid fabric tube is adapted to the integral annular airbag.

[0009] S3. Insert the entire annular airbag into the high-density aramid fabric tube, and fill the entire annular airbag with gas at a pressure greater than 1MPa. During this process, the entire annular airbag expands and tightens the outer high-density aramid fabric tube.

[0010] S4. Place the high-density aramid fabric tube and the integral ring airbag into the mold, heat it first, then keep it warm, so that the fibers on the high-density aramid fabric tube can be fully stretched.

[0011] S5. After the heat preservation is completed, a chemical treatment agent is applied to the high-density aramid tube, and then it is placed in a high-temperature chamber for constant temperature heating. After the constant temperature heating is completed, it is naturally cooled so that the fibers on the high-density aramid tube are firmly bonded together through physical and chemical action, and finally the high-density aramid tube obtains a stable shape.

[0012] S6. After shaping, maintain the air pressure in the overall annular airbag and place it naturally under pressure for more than 24 hours;

[0013] S7. Release the pressurized gas to restore the entire annular airbag to its natural state and leave it in its natural state for more than 24 hours;

[0014] S8. Performance testing is conducted on the entire structure formed by the high-density aramid fabric tube and the integral annular airbag, namely the deep-water airbag.

[0015] S9. Deep-sea airbags that pass the performance test are qualified products, while deep-sea airbags that fail the performance test are defective products.

[0016] Further specifying, in S1, the raw materials used to make the overall annular airbag are natural rubber and synthetic rubber, totaling two components.

[0017] Further specifying, in S1, before overall extrusion, the material must undergo mixing and calendering processes.

[0018] Further specified, in S3, the gas pressure of the gas filling the integral annular airbag is 1.5 MPa.

[0019] Further specifying, in S4, the target temperature for heating is 160°C and the temperature is maintained at 160°C.

[0020] Further restrictions are placed on the heat preservation time, which is 2 hours.

[0021] Further specifying that in S5, firstly, Chemlock adhesive is applied to the high-density aramid fabric tube, and after drying, a layer of neoprene adhesive protective layer is applied.

[0022] Further specifying, in S5, the temperature selected for constant temperature heating is 160℃, and the holding time is 40 minutes.

[0023] Further defining the feature, the overall annular airbag is connected to the valve and inflated / deflated through the valve, and the high-density aramid fabric tube has a through hole at the position corresponding to the valve.

[0024] The beneficial effects of this invention are as follows: Aramid fibers are woven in a circular pattern and shaped using a high-temperature, high-pressure forming process to achieve the required shape and size of the high-density aramid tube. The fibers are then chemically treated at high temperatures to induce permanent deformation, resulting in stable dimensions. A ring-shaped airbag matching the high-density aramid tube is produced using a mixture of natural and synthetic rubber components through compounding, calendering, extrusion, and vulcanization. This ring-shaped airbag is then combined with the high-density aramid tube to create a deep-sea airbag. The deep-sea airbag manufactured using this method overcomes many defects in current manufacturing processes, resulting in uniform quality across all parts of the product, stable overall performance, and meeting the requirements for high pressure resistance, low expansion, shape stability, and good airtightness. Detailed Implementation

[0025] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below through embodiments.

[0026] Embodiment 1 of the present invention,

[0027] A method for manufacturing a shape-stable deep-water airbag includes the following steps.

[0028] S1. Using natural rubber and synthetic rubber as raw materials, the integral ring airbag is made by successively mixing, calendering, integral extrusion and vulcanization processes.

[0029] S2. Using aramid fiber as raw material, a high-density aramid fabric tube is made in an integral circular weave form. The high-density aramid fabric tube is adapted to the integral annular airbag.

[0030] S3. Insert the entire annular airbag into the high-density aramid fabric tube, and fill the entire annular airbag with gas at a pressure of 1.5MPa. During this process, the entire annular airbag expands and tightens the outer high-density aramid fabric tube.

[0031] S4. Place the high-density aramid fabric tube and the integral ring airbag into the mold, first heat to 160℃, then keep at 160℃ for 2 hours to allow the fibers on the high-density aramid fabric tube to fully stretch.

[0032] S5. After the heat preservation is completed, first apply Chemlock adhesive to the high-density aramid tube. After it dries, apply a layer of neoprene adhesive protective layer. Then place it in a high-temperature oven and heat it at a constant temperature of 160℃ for 40 minutes. After the constant temperature heating is completed, let it cool naturally so that the fibers on the high-density aramid tube are firmly bonded together through physical and chemical action, and finally the high-density aramid tube obtains a stable shape.

[0033] S6. After shaping, maintain the air pressure in the overall annular airbag and place it naturally under pressure for more than 24 hours;

[0034] S7. Release the pressurized gas to restore the entire annular airbag to its natural state and leave it in its natural state for more than 24 hours;

[0035] S8. Performance testing is conducted on the entire structure formed by the high-density aramid fabric tube and the integral annular airbag, namely the deep-water airbag.

[0036] S9. Deep-sea airbags that pass the performance test are qualified products, while deep-sea airbags that fail the performance test are defective products.

[0037] In this embodiment, aramid fiber is used as raw material to produce a high-density aramid fabric tube in an integral circular weave form;

[0038] Gas at a pressure of 1.5 MPa is filled into the overall annular airbag to expand the overall annular airbag, thereby tightening the outer high-density aramid tube, standardizing the shape of the high-density aramid tube, and performing high-temperature and high-pressure shaping on the high-density aramid tube at a high temperature of 160℃. This process lasts for 2 hours, which can fully stretch the fibers on the high-density aramid tube.

[0039] The high-density aramid fabric tube is coated with Chemlock adhesive and allowed to dry. Then, a layer of neoprene adhesive is applied as a protective layer. The tube is then placed in a high-temperature oven and heated at a constant temperature of 160°C for 40 minutes. This process is to chemically treat the fiber under high temperature conditions, causing permanent deformation of the limiting components, thereby obtaining stable dimensions.

[0040] Because of the use of integral circular weaving, the fibers are first pre-stretched using high temperature and high pressure, and then chemically treated with chemical agents under high temperature conditions to produce permanent deformation, thus avoiding the defects of existing chemical fiber filaments in woven products, such as curling and easy expansion and deformation under stress.

[0041] The integral annular airbag is made from natural and synthetic rubber through a series of processes including mixing, calendering, integral extrusion, and vulcanization. This process ensures a uniform mass distribution in the integral annular airbag, overcoming the localized quality defects caused by the bonding of multiple components in existing processes. It has the advantages of high pressure resistance, minimal deformation, and good pressure retention.

[0042] Embodiment 2 of the present invention

[0043] Based on Example 1, the overall annular airbag is connected to the valve and inflated and deflated through the valve, and the high-density aramid fabric tube has a through hole at the position corresponding to the valve.

[0044] In this embodiment, the overall annular airbag is filled with high-pressure gas through the valve, thereby providing effective support, shock absorption, noise reduction, and protection for the equipment in deep-water, high-pressure environments.

[0045] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A method for manufacturing a shape-stable deep-water airbag, characterized in that: Includes the following steps, S1. The integral annular airbag is manufactured using integral extrusion and vulcanization processes; S2. Using aramid fiber as raw material, a high-density aramid fabric tube is made in an integral circular weave form, and the high-density aramid fabric tube is adapted to the integral annular airbag. S3. Insert the entire annular airbag into the high-density aramid fabric tube, and fill the entire annular airbag with gas at a pressure greater than 1MPa. During this process, the entire annular airbag expands and tightens the outer high-density aramid fabric tube. S4. Place the high-density aramid fabric tube and the integral ring airbag into the mold, heat it first, then keep it warm, so that the fibers on the high-density aramid fabric tube can be fully stretched. S5. After the heat preservation is completed, a chemical treatment agent is applied to the high-density aramid tube, and then it is placed in a high-temperature chamber for constant temperature heating. After the constant temperature heating is completed, it is naturally cooled so that the fibers on the high-density aramid tube are firmly bonded together through physical and chemical action, and finally the high-density aramid tube obtains a stable shape. S6. After shaping, maintain the air pressure in the overall annular airbag and place it naturally under pressure for more than 24 hours; S7. Release the pressurized gas to restore the entire annular airbag to its natural state and leave it in its natural state for more than 24 hours; S8. Performance testing is conducted on the entire structure formed by the high-density aramid fabric tube and the integral annular airbag, namely the deep-water airbag. S9. Deep-sea airbags that pass the performance test are qualified products, while deep-sea airbags that fail the performance test are defective products.

2. The method for manufacturing a shape-stabilized deep-sea airbag according to claim 1, characterized in that: In S1, the raw materials used to make the overall ring-shaped airbag are natural rubber and synthetic rubber, consisting of two components.

3. The method for manufacturing a shape-stable deep-water airbag according to claim 2, characterized in that: In S1, before the overall extrusion is carried out, the mixture and calendering processes must be performed sequentially.

4. The method for manufacturing a shape-stabilized deep-sea airbag according to claim 1, characterized in that: In step S3, the gas pressure of the gas filling the integral annular airbag is 1.5 MPa.

5. The method for manufacturing a shape-stabilized deep-sea airbag according to claim 1, characterized in that: In step S4, the target temperature for heating is 160°C, and the temperature is maintained at 160°C.

6. The method for manufacturing a shape-stabilized deep-water airbag according to claim 5, characterized in that: The heat preservation time is 2 hours.

7. The method for manufacturing a shape-stabilized deep-sea airbag according to claim 1, characterized in that: In step S5, firstly, Chemlock adhesive is applied to the high-density aramid fabric tube, and after it dries, a layer of neoprene adhesive protective layer is applied.

8. The method for manufacturing a shape-stable deep-water airbag according to claim 7, characterized in that: In S5, the temperature selected for constant temperature heating is 160℃, and the holding time is 40 minutes.

9. The method for manufacturing a shape-stabilized deep-water airbag according to claim 1, characterized in that: The overall annular airbag is connected to the valve and is inflated and deflated through the valve. The high-density aramid fabric tube has a through hole at the position corresponding to the valve.