Airbag for deep sea and manufacturing method thereof

Abstract

The invention provides a deep sea airbag and a manufacturing method thereof, and the method comprises the following steps: mixing 90-110 parts by weight of chloroprene rubber, 16-20 parts by weight of TPU, 8-12 parts by weight of coumarone indene resin and 4-6 parts by weight of a reinforcing agent to obtain a colloidal fluid, the reinforcing agent is obtained by mixing 45 to 55 parts by weight of aluminum silicate, 11 to 15 parts by weight of barium stearate, 17 to 21 parts by weight of dibasic lead stearate, 8 to 12 parts by weight of pentaerythritol and 17 to 21 parts by weight of sodium pyrophosphate; coating two surfaces of nylon cloth with the colloid fluid in an inert gas atmosphere at a first preset temperature to obtain a film base material; when the surface temperature of the film base material is reduced to be within the preset temperature range, rolling the film base material through a calender in the environment of the preset temperature range to obtain a capsule film; cutting the airbag body film according to a preset shape and size to obtain an airbag base material; every two to-be-bonded edges of the air bag base material are stacked and bonded through an adhesive in a lap-joint bonding mode, and the air bag for deep sea is manufactured.

Description

Technical Field

[0001] The present invention relates to the technical field of airbag manufacturing, and in particular to a deep-sea airbag and a manufacturing method thereof. Background Art

[0002] During deep-sea diving or exploration activities, airbags can be used to quickly float people and equipment to the surface in case of danger, so as to achieve emergency escape and rescue. This requires that the airbag should be able to quickly prop up in case of danger, and remain intact after propping up so as to continue to float. In the related art, the airbag can be quickly propped up by detonating gunpowder to generate gas. However, the instantaneous pressure burst and instantaneous temperature burst when the gunpowder is detonated may damage the airbag body or connecting parts. Therefore, the airbag used must not only have no leakage holes itself, but also be able to withstand the impact of the gunpowder detonation and have no leakage holes. How to manufacture deep-sea airbags that meet these requirements is a technical problem that needs to be solved urgently. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a deep-sea airbag and a manufacturing method thereof. The manufactured airbag can withstand the impact of high instantaneous pressure and temperature burst, thereby ensuring the safety needs of emergency escape and rescue as much as possible.

[0004] The technical solution adopted by the present invention is as follows: A method for manufacturing a deep-sea airbag comprises the following steps: S11: mixing the raw materials according to the weight proportions of 90-110 parts of chloroprene rubber, 16-20 parts of TPU, 8-12 parts of coumarone resin, and 4-6 parts of a reinforcing agent to obtain a colloid fluid, wherein the reinforcing agent is obtained by mixing the weight proportions of 45-55 parts of aluminum silicate, 11-15 parts of barium stearate, 17-21 parts of dibasic lead stearate, 8-12 parts of pentaerythritol, and 17-21 parts of sodium pyrophosphate; S12: heating the mixture under an inert gas atmosphere at a first preset temperature. In an environment of degrees, the colloid fluid is applied to both sides of the nylon cloth to obtain a film base material; S13: when the surface temperature of the film base material is reduced to within a preset temperature range, the film base material is rolled by a calender in the environment of the preset temperature range to obtain a capsule film; S14: the capsule film is cut into a predetermined shape and size to obtain an airbag substrate; S15: every two edges of the airbag substrate to be bonded are stacked, and they are bonded by an adhesive in an overlapping bonding manner to produce the deep-sea airbag.

[0005] Furthermore, before step S15, the method further includes: mixing the raw materials according to the weight proportions of 40 to 50 parts of polycaprolactone diol, 38 to 42 parts of silane coupling agent, and 8 to 10 parts of dimethylolbutyric acid, and reacting them for a first preset time in a vacuum environment at a second preset temperature to obtain a modified polyester diol; adding 40 to 50 parts of MDI to 90 to 100 parts of the modified polyester diol, and reacting them for a second preset time in a third preset temperature environment to obtain a rubber; Adhesive base liquid; maintaining the third preset temperature, adding 0.8-1.2 parts of dihydroxymethylpropionic acid, 0.01-0.02 parts of dibutyltin dilaurate, and 14-18 parts of acetone to 65-75 parts of the adhesive base liquid, reacting for the third preset time, naturally cooling to reduce the temperature to room temperature, adding 1-2 parts of triethanolamine, 0.4-0.6 parts of diethyltoluenediamine, and 0.04-0.06 parts of tributyl phosphate, mixing evenly, to obtain the adhesive.

[0006] Optionally, the thickness of the nylon cloth is 0.5-1 mm, the thickness of the colloid fluid coated on each side of the nylon cloth is 1.25-2.5 mm, and the thickness of the capsule film after rolling is 2.5-6 mm.

[0007] Optionally, the first preset temperature is 130-170°C.

[0008] Optionally, the preset temperature range is between 25°C and 90°C.

[0009] Optionally, the second preset temperature is 200-220° C., and the first preset time is 8-12 hours.

[0010] Optionally, the third preset temperature is 75-85° C., and the second preset time is 1.5-2.5 hours.

[0011] Optionally, the third preset time is 2.5~3.5h.

[0012] A deep-sea airbag is manufactured by the manufacturing method of the deep-sea airbag.

[0013] Beneficial effects of the present invention: The airbag body and joints manufactured by the present invention have good impact resistance and can withstand the impact of high instantaneous pressure and temperature bursts, thereby ensuring the safety requirements of emergency escape and rescue as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a flow chart of the method for manufacturing a deep-sea airbag.

[0015] Figure 2 The present invention is a flow chart of a method for producing the adhesive of the present invention. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] like Figure 1 As shown, the method for manufacturing a deep-sea airbag of the present invention comprises the following steps S11 to S15: S11: The raw materials are mixed according to the weight proportions of 90-110 parts of chloroprene rubber, 16-20 parts of TPU (thermoplastic polyurethane rubber), 8-12 parts of coumarone resin and 4-6 parts of reinforcing agent to obtain a colloidal fluid, wherein the reinforcing agent is mixed according to the weight proportions of 45-55 parts of aluminum silicate, 11-15 parts of barium stearate, 17-21 parts of dibasic lead stearate, 8-12 parts of pentaerythritol and 17-21 parts of sodium pyrophosphate.

[0018] S12: In an inert gas atmosphere and a first preset temperature environment, a colloid fluid is applied to both sides of the nylon cloth to obtain a film base material.

[0019] S13: When the surface temperature of the film base material drops to within a preset temperature range, the film base material is rolled by a calender in an environment within the preset temperature range to obtain a capsule film.

[0020] S14: Cutting the airbag film into a predetermined shape and size to obtain an airbag substrate.

[0021] S15: stacking each two edges of the airbag substrate to be bonded, and bonding them by overlapping bonding with an adhesive to produce a deep-sea airbag.

[0022] Before step S5, the adhesive may be manufactured, such as Figure 2 As shown, the method for manufacturing the adhesive of the present invention comprises the following steps S21 to S23: S21: Mix the raw materials according to the weight proportions of 40-50 parts of polycaprolactone diol, 38-42 parts of silane coupling agent and 8-10 parts of dimethylolbutyric acid, and react them at a second preset temperature and in a vacuum environment for a first preset time to obtain a modified polyester diol.

[0023] S22: adding 40-50 parts of MDI (diphenylmethane diisocyanate) to 90-100 parts of modified polyester diol, and reacting for a second preset time in an environment of a third preset temperature to obtain an adhesive base liquid.

[0024] S23: Maintaining the third preset temperature, adding 0.8-1.2 parts of dihydroxymethylpropionic acid, 0.01-0.02 parts of dibutyltin dilaurate, and 14-18 parts of acetone to 65-75 parts of the adhesive base liquid, reacting for the third preset time, naturally cooling and lowering the temperature to room temperature, adding 1-2 parts of triethanolamine, 0.4-0.6 parts of diethyltoluenediamine, and 0.04-0.06 parts of tributyl phosphate, mixing evenly, and obtaining an adhesive.

[0025] Optionally, the thickness of the nylon cloth is 0.5-1 mm, the thickness of the colloid fluid coated on each side of the nylon cloth is 1.25-2.5 mm, and the thickness of the capsule film after rolling is 2.5-6 mm.

[0026] Optionally, the first preset temperature is 130-170°C.

[0027] Optionally, the preset temperature range is between 25°C and 90°C.

[0028] Optionally, the second preset temperature is 200-220° C., and the first preset time is 8-12 hours.

[0029] Optionally, the third preset temperature is 75-85° C., and the second preset time is 1.5-2.5 hours.

[0030] Optionally, the third preset time is 2.5~3.5h.

[0031] Preferably, the room temperature mentioned in step S23 is 15-30°C.

[0032] Optionally, the stacking depth between two edges of the same airbag substrate or between edges of different airbag substrates is 2-5 cm. Example 1

[0033] Airbag substrate manufacturing: 50 parts of aluminum silicate, 13 parts of barium stearate, 19 parts of dibasic lead stearate, 10 parts of pentaerythritol, and 19 parts of sodium pyrophosphate are mixed to obtain a reinforcing agent. 100 parts of chloroprene rubber, 18 parts of TPU, 10 parts of coumarone resin, and 5 parts of reinforcing agent are mixed to obtain a colloid fluid. In a nitrogen atmosphere and an environment of 150°C, the colloid fluid is applied to both sides of the nylon cloth to obtain a film base material. Among them, the thickness of the nylon cloth is 0.8mm, and the thickness of the colloid fluid applied on each side of the nylon cloth is 2mm. When the surface temperature of the film base material is reduced to between 40°C and 70°C, the film base material is rolled by a calender in an environment of 40°C to 70°C to obtain a capsule film. The thickness of the capsule film after rolling is 4mm. By adopting a suitable calender and setting the calender parameters, the thickness of the colloid fluid on each side of the nylon cloth after rolling is 80% of the original thickness. Finally, the airbag film is cut to obtain the airbag substrate.

[0034] Adhesive preparation: 45 parts of polycaprolactone diol, 40 parts of silane coupling agent, and 9 parts of dimethylolbutyric acid are mixed according to the weight parts, and reacted at 210°C and vacuum environment for 10 hours to obtain modified polyester diol. 45 parts of MDI are added to 95 parts of modified polyester diol, and reacted at 80°C environment for 2 hours to obtain adhesive base liquid. Maintaining 80°C, 1 part of dimethylolpropionic acid, 0.01 part of dibutyltin dilaurate, and 16 parts of acetone are added to 70 parts of adhesive base liquid. After reacting for the third preset time, naturally cool down the temperature to room temperature, add 1.5 parts of triethanolamine, 0.5 parts of diethyltoluenediamine, and 0.05 parts of tributyl phosphate, mix well, and obtain adhesive.

[0035] Manufacturing of finished deep-sea airbags: The airbag substrates are bonded by overlapping with the above-mentioned adhesive. The overlapping depth, i.e., the width of the double-layer overlapping part, is 3 cm. The finished product is obtained after pressing and curing.

[0036] It should be noted that the above-mentioned Example 1 is a preferred embodiment of the present invention. In other embodiments of the present invention, the weight percentages of various materials, various temperatures, dimensions, time data, etc., are not completely the same as those in Example 1, but are all within the corresponding optional range.

[0037] Comparative Example 1

[0038] The difference from Example 1 is that no reinforcing agent is added to the raw materials for kneading to obtain the colloid fluid, and the other embodiments are the same.

[0039] Comparative Example 2

[0040] The difference from Example 1 is that 2 parts of antioxidant are added to the raw materials for mixing to obtain the colloid fluid, and the other implementation methods are the same.

[0041] Comparative Example 3

[0042] The difference from Example 1 is that the adhesive obtained in steps S21 to S23 is replaced by 303 flame retardant super glue produced by a chemical plant, and the other implementation methods are the same.

[0043] The comparison results between the comparative example and embodiment 1 are shown in Table 1 and Table 2.

[0044] Table 1

[0045] Table 2

[0046] It can be seen from Table 1 that the reinforcing agent plays a decisive role in improving the strength of the airbag substrate. The tear strength of the airbag substrate obtained by the method of the embodiment of the present invention is relatively high and remains at a high level at a relatively high temperature. The addition of the antioxidant will reduce the strength of the airbag substrate.

[0047] It can be seen from Table 2 that the adhesive obtained by the method of the embodiment of the present invention has a higher bonding strength and is relatively less affected by temperature rise.

[0048] According to the manufacturing method of deep-sea airbags in the embodiments of the present invention, the airbag body and joints of the manufactured airbags have good impact resistance and can withstand the impact of high instantaneous pressure and temperature bursts, thereby ensuring the safety needs of emergency escape and rescue as much as possible.

[0049] Based on the method for manufacturing a deep-sea airbag in the above-mentioned embodiment, the present invention also proposes a deep-sea airbag.

[0050] The deep-sea airbag of the embodiment of the present invention is manufactured by the manufacturing method of the deep-sea airbag of any of the above embodiments, and can withstand the impact of high instantaneous pressure and temperature bursts, thereby ensuring the safety requirements of emergency escape and rescue as much as possible.

[0051] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0052] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0053] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0055] Any process or method description in a flowchart or otherwise described herein may be understood to represent a module, segment or portion of code that includes one or more executable instructions for implementing the steps of a specific logical function or process, and the scope of the preferred embodiments of the present invention includes alternative implementations in which functions may not be performed in the order shown or discussed, including performing functions in a substantially simultaneous manner or in the reverse order depending on the functions involved, which should be understood by those skilled in the art to which the embodiments of the present invention belong.

[0056] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in combination with these instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in combination with these instruction execution systems, devices or apparatuses. More specific examples (non-exhaustive list) of computer-readable media include the following: an electrical connection with one or more wires (electronic device), a portable computer disk box (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium and then editing, interpreting or processing in other suitable ways if necessary, and then stored in a computer memory.

[0057] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, multiple steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0058] A person skilled in the art may understand that all or part of the steps in the method for implementing the above-mentioned embodiment may be completed by instructing related hardware through a program, and the program may be stored in a computer-readable storage medium, which, when executed, includes one or a combination of the steps of the method embodiment.

[0059] In addition, each functional unit in each embodiment of the present invention may be integrated into a processing module, or each unit may exist physically separately, or two or more units may be integrated into one module. The above-mentioned integrated module may be implemented in the form of hardware or in the form of a software functional module. If the integrated module is implemented in the form of a software functional module and sold or used as an independent product, it may also be stored in a computer-readable storage medium.

[0060] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for manufacturing a deep-sea airbag, characterized in that: The following steps are involved: S11: Mix the raw materials according to the weight proportions of 90-110 parts of chloroprene rubber, 16-20 parts of TPU, 8-12 parts of coumarone resin, and 4-6 parts of reinforcing agent to obtain a colloid fluid, wherein the reinforcing agent is obtained by mixing according to the weight proportions of 45-55 parts of aluminum silicate, 11-15 parts of barium stearate, 17-21 parts of dibasic lead stearate, 8-12 parts of pentaerythritol, and 17-21 parts of sodium pyrophosphate; S12: in an inert gas atmosphere and a first preset temperature environment, applying the colloidal fluid to both sides of the nylon cloth to obtain a film base material; S13: When the surface temperature of the film base material drops to within a preset temperature range, the film base material is rolled by a calender in an environment within the preset temperature range to obtain a capsule film; S14: cutting the airbag film into a predetermined shape and size to obtain an airbag substrate; S15: stacking each two edges of the airbag substrate to be bonded, and bonding them by overlapping bonding with an adhesive to manufacture the deep-sea airbag.

2. The method for manufacturing a deep-sea airbag according to claim 1, characterized in that: Before step S15, the method further includes: The raw materials are mixed according to the weight proportions of 40-50 parts of polycaprolactone diol, 38-42 parts of silane coupling agent, and 8-10 parts of dimethylolbutyric acid, and reacted for a first preset time at a second preset temperature and in a vacuum environment to obtain a modified polyester diol; Adding 40 to 50 parts of MDI to 90 to 100 parts of the modified polyester diol, and reacting for a second preset time in an environment of a third preset temperature to obtain an adhesive base liquid; Maintaining the third preset temperature, adding 0.8-1.2 parts of dihydroxymethylpropionic acid, 0.01-0.02 parts of dibutyltin dilaurate, and 14-18 parts of acetone to 65-75 parts of the adhesive base liquid, reacting for the third preset time, naturally cooling and lowering the temperature to room temperature, adding 1-2 parts of triethanolamine, 0.4-0.6 parts of diethyltoluenediamine, and 0.04-0.06 parts of tributyl phosphate, mixing evenly, to obtain the adhesive.

3. The method for manufacturing a deep-sea airbag according to claim 1 or 2, characterized in that: The thickness of the nylon cloth is 0.5-1 mm, the thickness of the colloid fluid coated on each side of the nylon cloth is 1.25-2.5 mm, and the thickness of the capsule film after rolling is 2.5-6 mm.

4. The method for manufacturing a deep-sea airbag according to claim 1 or 2, characterized in that: The first preset temperature is 130-170°C.

5. The method for manufacturing a deep-sea airbag according to claim 1 or 2, characterized in that: The preset temperature range is between 25°C and 90°C.

6. The method for manufacturing a deep-sea airbag according to claim 2, characterized in that: The second preset temperature is 200-220° C., and the first preset time is 8-12 hours.

7. The method for manufacturing a deep-sea airbag according to claim 2, characterized in that: The third preset temperature is 75-85° C., and the second preset time is 1.5-2.5 hours.

8. The method for manufacturing a deep-sea airbag according to claim 2, characterized in that: The third preset time is 2.5~3.5h.

9. A deep-sea airbag, characterized in that: The deep-sea airbag is manufactured by the manufacturing method of any one of claims 2 to 8.

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