CN114131965A - Preparation method of high-temperature-resistant composite gas cylinder - Google Patents
Preparation method of high-temperature-resistant composite gas cylinder Download PDFInfo
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- CN114131965A CN114131965A CN202111404662.1A CN202111404662A CN114131965A CN 114131965 A CN114131965 A CN 114131965A CN 202111404662 A CN202111404662 A CN 202111404662A CN 114131965 A CN114131965 A CN 114131965A
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- 239000002131 composite material Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 24
- 229920001721 polyimide Polymers 0.000 claims abstract description 131
- 238000004804 winding Methods 0.000 claims abstract description 109
- 239000009719 polyimide resin Substances 0.000 claims abstract description 99
- 239000000835 fiber Substances 0.000 claims abstract description 60
- 239000002184 metal Substances 0.000 claims abstract description 38
- 229910052751 metal Inorganic materials 0.000 claims abstract description 38
- 239000004642 Polyimide Substances 0.000 claims abstract description 32
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000010438 heat treatment Methods 0.000 claims abstract description 28
- 238000006068 polycondensation reaction Methods 0.000 claims abstract description 23
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000012046 mixed solvent Substances 0.000 claims abstract description 12
- 229910001069 Ti alloy Inorganic materials 0.000 claims abstract description 7
- 239000003292 glue Substances 0.000 claims description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000009477 glass transition Effects 0.000 claims description 7
- 238000009730 filament winding Methods 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 5
- 239000000853 adhesive Substances 0.000 claims description 5
- 230000001070 adhesive effect Effects 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 4
- 239000004917 carbon fiber Substances 0.000 claims description 4
- 238000000576 coating method Methods 0.000 claims description 4
- 229920006231 aramid fiber Polymers 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 2
- 229920003253 poly(benzobisoxazole) Polymers 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical group C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 6
- 238000004090 dissolution Methods 0.000 abstract description 6
- 238000012545 processing Methods 0.000 abstract description 5
- 238000001556 precipitation Methods 0.000 description 6
- 239000011347 resin Substances 0.000 description 6
- 229920005989 resin Polymers 0.000 description 6
- 239000003822 epoxy resin Substances 0.000 description 4
- 229920000647 polyepoxide Polymers 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 239000004760 aramid Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000008030 elimination Effects 0.000 description 2
- 238000003379 elimination reaction Methods 0.000 description 2
- 238000004046 wet winding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/68—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts by incorporating or moulding on preformed parts, e.g. inserts or layers, e.g. foam blocks
- B29C70/70—Completely encapsulating inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2079/00—Use of polymers having nitrogen, with or without oxygen or carbon only, in the main chain, not provided for in groups B29K2061/00 - B29K2077/00, as moulding material
- B29K2079/08—PI, i.e. polyimides or derivatives thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/712—Containers; Packaging elements or accessories, Packages
- B29L2031/7158—Bottles
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Moulding By Coating Moulds (AREA)
Abstract
The invention discloses a preparation method of a high-temperature-resistant composite material gas cylinder, which is characterized in that a seamless metal lining is made of titanium alloy; selecting polycondensation type polyimide, adding the polycondensation type polyimide into a dimethylacetamide mixed solvent according to a ratio, and fully dissolving the polycondensation type polyimide into the dimethylacetamide mixed solvent in a heating mode to prepare polyimide resin; respectively selecting the thickness of the circumferential fiber winding layer and the thickness of the spiral fiber winding layer through a winding thickness calculation formula, and selecting a longitudinal fiber winding angle through a winding angle calculation formula to complete the winding of the fiber winding layer on the outer side of the metal lining; winding the polyimide resin layer on the outer side of the fiber winding layer to form a winding composite layer on the outer side of the metal lining; the vacuum furnace is adopted for vacuumizing, heating and curing, gas is pumped out, a stepped heating mode is adopted, the curing process is ensured to be uniform, and the porosity of a winding composite layer is reduced. The invention solves the defects of difficult dissolution and difficult processing and forming.
Description
Technical Field
The invention belongs to the technical field of composite materials, and particularly relates to a preparation method of a high-temperature-resistant composite gas cylinder.
Background
Since the application of the composite material gas cylinder in the sixties of the twentieth century, the composite material gas cylinder is widely applied to the existing space vehicles, and plays an important role in improving the carrying capacity of the space vehicles. At present, missiles, airplanes and aero-engines have higher and higher requirements on the high temperature resistance of gas cylinders, and the research and development of composite material gas cylinders for storing high-temperature and high-pressure gas in an aircraft solid attitude control power system is a technical difficulty. The composite layer of the composite material gas cylinder is formed by combining fibers and resin and wrapping the fibers and the resin outside a metal lining in a winding mode, the carbon fibers can resist the high temperature of 1500 ℃, the metal lining can be formed by selecting high-temperature-resistant steel materials or titanium alloys, the process is mature, and the maximum temperature resistance of the gas cylinder is mainly influenced by a resin system.
At present, a common resin system of a composite material gas cylinder is an epoxy resin system, the highest tolerable temperature of the epoxy resin is 150-200 ℃, and the tolerable temperature of a high-temperature gas cylinder for aviation, aerospace and missile is required to be more than 300 ℃, so that the epoxy resin-based composite material cannot meet the high-temperature requirement. Polyimide resin which can replace epoxy resin matrix composite materials in the prior art can resist the high temperature of more than 300 ℃, but the polyimide resin has the defects of difficult dissolution and difficult processing and forming, and can not be directly applied to a fiber winding process.
Disclosure of Invention
Aiming at the problems, the invention makes up the defects of the prior art and provides a preparation method of a high-temperature-resistant composite material gas cylinder, which can solve the problems of difficult dissolution and difficult processing and forming of polyimide resin; the invention solves the defects of insolubility, infusibility and difficult processing and forming by modifying the polyimide resin, realizes the elimination of a complex autoclave forming process in the wet winding process of the polyimide resin, and achieves the aim of optimizing and simplifying the gas cylinder preparation process.
In order to achieve the purpose, the invention adopts the following technical scheme.
The invention relates to a preparation method of a high-temperature-resistant composite gas cylinder, which comprises the following steps:
1) preparing a metal lining: the seamless metal lining is made of steel or titanium alloy materials;
2) preparing polyimide resin: selecting polycondensation type polyimide, adding the polycondensation type polyimide into a dimethylacetamide mixed solvent according to a ratio, and fully dissolving the polycondensation type polyimide into the dimethylacetamide mixed solvent in a heating mode to prepare polyimide resin; adding alcohol into the prepared polyimide resin, and uniformly stirring, wherein the density of the alcohol and the polyimide resin after uniform proportioning is 0.896g/mm3(ii) a The Tg temperature of the prepared polyimide resin is 460-480 ℃, and the Tg is the glass transition temperature;
3) winding: firstly, respectively selecting the thickness of a circumferential fiber winding layer and the thickness of a spiral fiber winding layer through a winding thickness calculation formula, and selecting a longitudinal fiber winding angle through a winding angle calculation formula to complete the winding of the fiber winding layer on the outer side of the metal lining; then, winding a polyimide resin layer on the outer side of the fiber winding layer to form a winding composite layer on the outer side of the metal lining; a brushing mode is adopted in the winding process of the polyimide resin layer;
the winding thickness calculation formula is as follows:
the winding angle calculation formula is as follows:
in the formula: h isθIs the thickness h of the circumferential fiber winding layerαFor the thickness, sigma, of the spiral filament winding layerfbIs the tensile strength, V, of the fiberfIs the fiber volume content, PbIs the burst pressure, P, of the gas cylinderb1The burst pressure of the metal lining is adopted, alpha is a longitudinal fiber winding angle, R is the radius of the metal lining, D is the nozzle diameter of the gas cylinder, and D is the outer diameter of the gas cylinder;
4) and (3) curing: the vacuum furnace is adopted for vacuumizing, heating and curing, gas is pumped out, a stepped heating mode is adopted, the curing process is ensured to be uniform, and the porosity of a winding composite layer is reduced.
In a preferred embodiment of the present invention, the mass of the polycondensation polyimide is 40% of the mass of the polyimide resin to be produced.
In another preferred embodiment of the present invention, the fibers in the winding composite layer are carbon fibers, aramid fibers or PBO high-strength fibers.
As another preferred scheme of the invention, the polyimide resin adhesive is preheated by adopting water bath heating in the winding process, and the preheating temperature is 40 ℃; pouring the polyimide resin glue heated in the water bath into a glue tank, wherein the glue tank needs to be heated, and the heating temperature of the glue tank is set to be 40 ℃.
In another preferred embodiment of the present invention, a painting method is adopted to increase the gel content of the polyimide resin during the winding process of the polyimide resin layer, and the content of the wound polyimide resin is 22% to 28%.
The invention has the beneficial effects that:
according to the preparation method of the high-temperature-resistant composite gas cylinder, the polyimide resin is modified through the polyimide resin preparation process in the step 2), and the defects that the polyimide resin is difficult to dissolve and process and form are overcome; through the curing mode of the step 4), the polyimide resin realizes the elimination of a complex autoclave forming process in the wet winding process, and achieves the purpose of optimizing and simplifying the gas cylinder preparation process.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more apparent, the present invention is further described in detail below with reference to specific embodiments. It should be understood that the detailed description and specific examples, while indicating the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
The invention discloses a preparation method of a high-temperature-resistant composite gas cylinder, which comprises the following steps:
1) preparing a metal lining: the seamless metal lining is made of steel or titanium alloy materials;
2) preparing polyimide resin: selecting polycondensation type polyimide, and adding the polycondensation type polyimide into a dimethylacetamide mixed solvent according to a ratio, wherein the mass of the polycondensation type polyimide is 40% of that of the prepared polyimide resin; fully dissolving the polycondensation polyimide into a dimethylacetamide mixed solvent by a heating mode to prepare polyimide resin; adding alcohol into the prepared polyimide resin, and uniformly stirring, wherein the density of the alcohol and the polyimide resin after uniform proportioning is 0.896g/mm3(ii) a The alcohol can improve the dissolution property of the polyimide and reduce the precipitation of the polyimide; the Tg of the prepared polyimide resin is 460-480 ℃, and the Tg is the glass transition temperature, so that the requirement of a high-temperature 420-DEG use environment of the gas cylinder can be met;
3) winding: firstly, the thickness of a circumferential fiber winding layer and the thickness of a spiral fiber winding layer are respectively selected through a winding thickness calculation formula, a longitudinal fiber winding angle is selected through a winding angle calculation formula, and the fiber winding layer is wound on the outer side of the metal lining, so that the metal lining can bear large internal pressure load with minimum mass and generate small deformation; then, winding a polyimide resin layer on the outer side of the fiber winding layer to form a winding composite layer on the outer side of the metal lining; the coating method is adopted in the winding process of the polyimide resin layer to improve the gel content of the polyimide resin, and the content of the wound polyimide resin is 22-28%; the fibers in the winding composite layer are carbon fibers; preheating the polyimide resin adhesive by adopting water bath heating in the winding process, wherein the preheating temperature is 40 ℃; pouring the polyimide resin glue heated in the water bath into a glue groove, wherein the glue groove needs to be heated, and the heating temperature of the glue groove is set to be 40 ℃;
the winding thickness calculation formula is as follows:
the winding angle calculation formula is as follows:
in the formula: h isθIs a circumferential fiberThickness of filament winding layer hαFor the thickness, sigma, of the spiral filament winding layerfbIs the tensile strength, V, of the fiberfIs the fiber volume content, PbIs the burst pressure, P, of the gas cylinderb1The burst pressure of the metal lining is adopted, alpha is a longitudinal fiber winding angle, R is the radius of the metal lining, D is the nozzle diameter of the gas cylinder, and D is the outer diameter of the gas cylinder;
4) and (3) curing: the polyimide resin is cured by a vacuum furnace, and gas is generated in the curing process of the polyimide resin; therefore, the vacuum pumping heating reinforcement mode is adopted, gas is pumped out, the step heating mode is adopted, the curing process is ensured to be uniform, and the porosity of the winding composite layer is reduced.
Specifically, the method improves the solubility of polyimide in a solvent by adjusting a polyimide resin glue preparation process, and improves the polyimide resin content of the gas cylinder by controlling the glue solution precipitation of the polyimide resin during winding and the like.
Example 2
The invention discloses a preparation method of a high-temperature-resistant composite gas cylinder, which comprises the following steps:
1) preparing a metal lining: the seamless metal lining is made of steel or titanium alloy materials;
2) preparing polyimide resin: selecting polycondensation type polyimide, and adding the polycondensation type polyimide into a dimethylacetamide mixed solvent according to a ratio, wherein the mass of the polycondensation type polyimide is 40% of that of the prepared polyimide resin; fully dissolving the polycondensation polyimide into a dimethylacetamide mixed solvent by a heating mode to prepare polyimide resin; adding alcohol into the prepared polyimide resin, and uniformly stirring, wherein the density of the alcohol and the polyimide resin after uniform proportioning is 0.896g/mm3(ii) a The alcohol can improve the dissolution property of the polyimide and reduce the precipitation of the polyimide; the Tg of the prepared polyimide resin is 460 ℃, and the Tg is the glass transition temperature, so that the requirement of the high-temperature 420 ℃ use environment of the gas cylinder can be met;
3) winding: firstly, the thickness of a circumferential fiber winding layer and the thickness of a spiral fiber winding layer are respectively selected through a winding thickness calculation formula, a longitudinal fiber winding angle is selected through a winding angle calculation formula, and the fiber winding layer is wound on the outer side of the metal lining, so that the metal lining can bear large internal pressure load with minimum mass and generate small deformation; then, winding a polyimide resin layer on the outer side of the fiber winding layer to form a winding composite layer on the outer side of the metal lining; the coating method is adopted in the winding process of the polyimide resin layer to improve the glue content of the polyimide resin, and the wound polyimide resin content is 22%; the fibers in the winding composite layer are aramid fibers; preheating the polyimide resin adhesive by adopting water bath heating in the winding process, wherein the preheating temperature is 40 ℃; pouring the polyimide resin glue heated in the water bath into a glue groove, wherein the glue groove needs to be heated, and the heating temperature of the glue groove is set to be 40 ℃;
the winding thickness calculation formula is as follows:
the winding angle calculation formula is as follows:
in the formula: h isθIs the thickness h of the circumferential fiber winding layerαFor the thickness, sigma, of the spiral filament winding layerfbIs the tensile strength, V, of the fiberfIs the fiber volume content, PbIs the burst pressure, P, of the gas cylinderb1The burst pressure of the metal lining is adopted, alpha is a longitudinal fiber winding angle, R is the radius of the metal lining, D is the nozzle diameter of the gas cylinder, and D is the outer diameter of the gas cylinder;
5) and (3) curing: the polyimide resin is cured by a vacuum furnace, and gas is generated in the curing process of the polyimide resin; therefore, the vacuum pumping heating reinforcement mode is adopted, gas is pumped out, the step heating mode is adopted, the curing process is ensured to be uniform, and the porosity of the winding composite layer is reduced.
Specifically, the method improves the solubility of polyimide in a solvent by adjusting a polyimide resin glue preparation process, and improves the polyimide resin content of the gas cylinder by controlling the glue solution precipitation of the polyimide resin during winding and the like.
Example 3
The invention discloses a preparation method of a high-temperature-resistant composite gas cylinder, which comprises the following steps:
1) preparing a metal lining: the seamless metal lining is made of steel or titanium alloy materials;
2) preparing polyimide resin: selecting polycondensation type polyimide, and adding the polycondensation type polyimide into a dimethylacetamide mixed solvent according to a ratio, wherein the mass of the polycondensation type polyimide is 40% of that of the prepared polyimide resin; fully dissolving the polycondensation polyimide into a dimethylacetamide mixed solvent by a heating mode to prepare polyimide resin; adding alcohol into the prepared polyimide resin, and uniformly stirring, wherein the density of the alcohol and the polyimide resin after uniform proportioning is 0.896g/mm3(ii) a The alcohol can improve the dissolution property of the polyimide and reduce the precipitation of the polyimide; the Tg of the prepared polyimide resin is 480 ℃, and the Tg is the glass transition temperature, so that the requirement of the high-temperature 420 ℃ use environment of the gas cylinder can be met;
3) winding: firstly, the thickness of a circumferential fiber winding layer and the thickness of a spiral fiber winding layer are respectively selected through a winding thickness calculation formula, a longitudinal fiber winding angle is selected through a winding angle calculation formula, and the fiber winding layer is wound on the outer side of the metal lining, so that the metal lining can bear large internal pressure load with minimum mass and generate small deformation; then, winding a polyimide resin layer on the outer side of the fiber winding layer to form a winding composite layer on the outer side of the metal lining; the coating method is adopted in the winding process of the polyimide resin layer to improve the glue content of the polyimide resin, and the content of the wound polyimide resin is 28%; the fibers in the winding composite layer adopt PBO high-strength fibers; preheating the polyimide resin adhesive by adopting water bath heating in the winding process, wherein the preheating temperature is 40 ℃; pouring the polyimide resin glue heated in the water bath into a glue groove, wherein the glue groove needs to be heated, and the heating temperature of the glue groove is set to be 40 ℃;
the winding thickness calculation formula is as follows:
winding angle calculating deviceThe formula is as follows:
in the formula: h isθIs the thickness h of the circumferential fiber winding layerαFor the thickness, sigma, of the spiral filament winding layerfbIs the tensile strength, V, of the fiberfIs the fiber volume content, PbIs the burst pressure, P, of the gas cylinderb1The burst pressure of the metal lining is adopted, alpha is a longitudinal fiber winding angle, R is the radius of the metal lining, D is the nozzle diameter of the gas cylinder, and D is the outer diameter of the gas cylinder;
4) and (3) curing: the polyimide resin is cured by a vacuum furnace, and gas is generated in the curing process of the polyimide resin; therefore, the vacuum pumping heating reinforcement mode is adopted, gas is pumped out, the step heating mode is adopted, the curing process is ensured to be uniform, and the porosity of the winding composite layer is reduced.
Specifically, the method improves the solubility of polyimide in a solvent by adjusting a polyimide resin glue preparation process, and improves the polyimide resin content of the gas cylinder by controlling the glue solution precipitation of the polyimide resin during winding and the like.
The glass transition temperature Tg of the polyimide resin prepared by the preparation method is 460-480 ℃, and the requirement of a high-temperature 420 ℃ use environment can be met; the high-temperature-resistant composite material gas cylinder prepared by the preparation method can meet the requirement of high-pressure gas storage under the high-temperature environment of 400 ℃, greatly expands the application range of the gas cylinder and plays an important role in promoting the military field. Through the preparation process of the polyimide resin, the modification treatment of the polyimide resin is realized, the defect that a thermoplastic material is difficult to form and process is overcome, a resin system integrating excellent processing and forming properties and physical and mechanical properties is formed, the glass transition temperature of the polyimide resin material is obviously improved, and the polyimide resin material can be used at the high temperature of more than 300 ℃ for a long time. The soluble polyimide resin developed by modifying the polyimide resin can lead the polyimide resin to have heat resistance and good solvent by introducing large-volume phenyl groups, and can solve the problem that the resin and the composite material have higher porosity. The soluble polyimide resin developed by modifying the polyimide resin can improve the interlaminar shear strength and the fracture elongation of the polyimide resin wound product and ensure that the gas cylinder can bear high pressure.
It should be understood that the detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can be modified or substituted equally to achieve the same technical effects; as long as the use requirements are met, the method is within the protection scope of the invention.
Claims (5)
1. The preparation method of the high-temperature-resistant composite material gas cylinder is characterized by comprising the following steps of:
1) preparing a metal lining: the seamless metal lining is made of steel or titanium alloy materials;
2) preparing polyimide resin: selecting polycondensation type polyimide, adding the polycondensation type polyimide into a dimethylacetamide mixed solvent according to a ratio, and fully dissolving the polycondensation type polyimide into the dimethylacetamide mixed solvent in a heating mode to prepare polyimide resin; adding alcohol into the prepared polyimide resin, and uniformly stirring, wherein the density of the alcohol and the polyimide resin after uniform proportioning is 0.896g/mm3(ii) a The Tg of the prepared polyimide resin is 460-480 ℃, and the Tg is the glass transition temperature;
3) winding: firstly, respectively selecting the thickness of a circumferential fiber winding layer and the thickness of a spiral fiber winding layer through a winding thickness calculation formula, and selecting a longitudinal fiber winding angle through a winding angle calculation formula to complete the winding of the fiber winding layer on the outer side of the metal lining; then, winding a polyimide resin layer on the outer side of the fiber winding layer to form a winding composite layer on the outer side of the metal lining; a brushing mode is adopted in the winding process of the polyimide resin layer;
the winding thickness calculation formula is as follows:
the winding angle calculation formula is as follows:
in the formula: h isθIs the thickness h of the circumferential fiber winding layerαFor the thickness, sigma, of the spiral filament winding layerfbIs the tensile strength, V, of the fiberfIs the fiber volume content, PbIs the burst pressure, P, of the gas cylinderb1The burst pressure of the metal lining is adopted, alpha is a longitudinal fiber winding angle, R is the radius of the metal lining, D is the nozzle diameter of the gas cylinder, and D is the outer diameter of the gas cylinder;
4) and (3) curing: the vacuum furnace is adopted for vacuumizing, heating and curing, gas is pumped out, a stepped heating mode is adopted, the curing process is ensured to be uniform, and the porosity of a winding composite layer is reduced.
2. The preparation method of the high-temperature-resistant composite material gas cylinder according to claim 1, characterized by comprising the following steps: the mass of the polycondensation type polyimide is 40% of that of the prepared polyimide resin.
3. The preparation method of the high-temperature-resistant composite material gas cylinder according to claim 1, characterized by comprising the following steps: the fiber in the winding composite layer is carbon fiber, aramid fiber or PBO high-strength fiber.
4. The preparation method of the high-temperature-resistant composite material gas cylinder according to claim 1, characterized by comprising the following steps: preheating the polyimide resin adhesive by adopting water bath heating in the winding process, wherein the preheating temperature is 40 ℃; pouring the polyimide resin glue heated in the water bath into a glue tank, wherein the glue tank needs to be heated, and the heating temperature of the glue tank is set to be 40 ℃.
5. The preparation method of the high-temperature-resistant composite material gas cylinder according to claim 1, characterized by comprising the following steps: the coating method is adopted in the winding process of the polyimide resin layer to improve the gel content of the polyimide resin, and the content of the wound polyimide resin is 22-28%.
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| CN202111404662.1A CN114131965A (en) | 2021-11-24 | 2021-11-24 | Preparation method of high-temperature-resistant composite gas cylinder |
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| CN202111404662.1A CN114131965A (en) | 2021-11-24 | 2021-11-24 | Preparation method of high-temperature-resistant composite gas cylinder |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000313069A (en) * | 1999-04-28 | 2000-11-14 | Ihi Aerospace Co Ltd | Manufacture of pressure vessel |
| CN106113525A (en) * | 2016-06-30 | 2016-11-16 | 高海燕 | A kind of polyimide fiber strengthens the preparation method of polymer matrix composites Herba Veronicastri |
| CN112524476A (en) * | 2020-12-18 | 2021-03-19 | 沈阳航天新光集团有限公司 | Design method of high-temperature-resistant high-pressure-resistant carbon fiber polyimide composite gas cylinder |
-
2021
- 2021-11-24 CN CN202111404662.1A patent/CN114131965A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000313069A (en) * | 1999-04-28 | 2000-11-14 | Ihi Aerospace Co Ltd | Manufacture of pressure vessel |
| CN106113525A (en) * | 2016-06-30 | 2016-11-16 | 高海燕 | A kind of polyimide fiber strengthens the preparation method of polymer matrix composites Herba Veronicastri |
| CN112524476A (en) * | 2020-12-18 | 2021-03-19 | 沈阳航天新光集团有限公司 | Design method of high-temperature-resistant high-pressure-resistant carbon fiber polyimide composite gas cylinder |
Non-Patent Citations (1)
| Title |
|---|
| 王祥龙等: "金属内衬复合材料高压气瓶研制技术", 航天制造技术, no. 01, 25 February 2013 (2013-02-25), pages 24 - 26 * |
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