CN111237105A - Composite structure has oil tank from closing function - Google Patents
Composite structure has oil tank from closing function Download PDFInfo
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- CN111237105A CN111237105A CN202010153785.1A CN202010153785A CN111237105A CN 111237105 A CN111237105 A CN 111237105A CN 202010153785 A CN202010153785 A CN 202010153785A CN 111237105 A CN111237105 A CN 111237105A
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- 238000007789 sealing Methods 0.000 claims abstract description 118
- 230000004888 barrier function Effects 0.000 claims abstract description 59
- 230000001681 protective effect Effects 0.000 claims abstract description 48
- 229920001971 elastomer Polymers 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 29
- 239000005060 rubber Substances 0.000 claims abstract description 29
- 238000001175 rotational moulding Methods 0.000 claims abstract description 11
- 229920000642 polymer Polymers 0.000 claims description 45
- 239000000463 material Substances 0.000 claims description 15
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 10
- 239000004944 Liquid Silicone Rubber Substances 0.000 claims description 10
- 239000004917 carbon fiber Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 229920002379 silicone rubber Polymers 0.000 claims description 10
- -1 dimethyl siloxane Chemical class 0.000 claims description 9
- 229920000098 polyolefin Polymers 0.000 claims description 9
- 239000004952 Polyamide Substances 0.000 claims description 8
- 239000004642 Polyimide Substances 0.000 claims description 8
- 229920002647 polyamide Polymers 0.000 claims description 8
- 229920001721 polyimide Polymers 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 claims description 6
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 claims description 6
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 claims description 6
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 5
- 239000011737 fluorine Substances 0.000 claims description 5
- 229910052731 fluorine Inorganic materials 0.000 claims description 5
- 239000012974 tin catalyst Substances 0.000 claims description 5
- 229920002396 Polyurea Polymers 0.000 claims description 4
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 2
- 239000002828 fuel tank Substances 0.000 claims 10
- 229920001296 polysiloxane Polymers 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 239000000377 silicon dioxide Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 230000000903 blocking effect Effects 0.000 abstract description 4
- 238000005286 illumination Methods 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
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Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0011—Constructional details; Manufacturing or assembly of elements of fuel systems; Materials therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64D—EQUIPMENT FOR FITTING IN OR TO AIRCRAFT; FLIGHT SUITS; PARACHUTES; ARRANGEMENT OR MOUNTING OF POWER PLANTS OR PROPULSION TRANSMISSIONS IN AIRCRAFT
- B64D37/00—Arrangements in connection with fuel supply for power plant
- B64D37/02—Tanks
- B64D37/06—Constructional adaptations thereof
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/34—Silicon-containing compounds
- C08K3/36—Silica
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5415—Silicon-containing compounds containing oxygen containing at least one Si—O bond
- C08K5/5419—Silicon-containing compounds containing oxygen containing at least one Si—O bond containing at least one Si—C bond
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K2015/03032—Manufacturing of fuel tanks
- B60K2015/03046—Manufacturing of fuel tanks made from more than one layer
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Sustainable Development (AREA)
- Aviation & Aerospace Engineering (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an oil tank with a composite structure and a self-sealing function, which comprises a protective framework layer, a self-sealing layer and a barrier layer, wherein the protective framework layer, the self-sealing layer and the barrier layer are sequentially arranged from outside to inside; the self-sealing layer is formed on the inner surface of the protective framework layer by curing liquid rubber through a rotational molding process, and the barrier layer is formed on the inner surface of the self-sealing layer through a rotational molding process; or the self-sealing layer is independently cured and molded by adopting liquid rubber, is tightly attached to the outer surface of the barrier layer through the elasticity of the self-sealing layer, and finally the protective framework layer is molded on the outer surface of the self-sealing layer. The self-sealing layer of the oil tank is not easy to fall off, so that the self-sealing effect is greatly improved; the elastic holes in the protective framework layer and the blocking layer have certain self-contraction characteristics, the size of the elastic hole is smaller than that of the elastic piece, the elastic hole is smooth and has no petal-shaped flanging, and deformation recovery of the elastic hole of the self-sealing layer is less obstructed; the self-sealing layer is arranged between the protective framework layer and the barrier layer, and is not directly subjected to external scraping, impact, illumination and washing of internal oil, so that the service life is longer.
Description
Technical Field
The invention belongs to the field of oil tanks, and particularly relates to an oil tank with a composite structure and a self-sealing function.
Background
The oil tank is one of the core components of motor equipment such as vehicles, airplanes and the like, and is the most basic guarantee of the battle ability in a battlefield. On the battlefield, the safety protection device can be threatened by bullets, explosion fragments, explosion devices and the like at any time, and the safety protection device has great significance for improving the safety protection capability.
The oil tank is from sealing function is one of the important research direction that improves oil tank safety protection ability at present, and when the oil tank was punctured by the shell fragment, automatic sealing can be realized to the bullet hole on the box promptly, and the incasement fluid can not take place to last to leak, guarantees the maneuvering ability of motor-driven equipment such as vehicle, aircraft, avoids the burning that fluid leakage caused even to explode simultaneously, guarantees personnel and the safety of equipping.
The existing oil tank with the self-sealing function is a metal oil tank with an elastic material layer attached to the surface, and the self-sealing function of the oil tank is realized through the deformation recovery of the elastic material. However, the difference between the cold and hot deformation coefficients of the metal material and the elastic material is large, and the elastic material layer is easy to separate from the metal layer, so that the local self-sealing function of the box body is reduced and even lost. In addition, the oil tank is punctured by the shell fragment, and the metal level can appear breaking away from the open petal form bullet hole of direction to the shell fragment to bullet hole size is greater than the shell fragment size usually, and the elastic material layer around the petal form bullet hole is difficult to resume deformation, is weakened greatly even loses from the closure function. The elastic material layer is attached to the inner side and the outer side of the metal layer and directly subjected to external scraping, impact, illumination and washing of internal oil, the elastic material layer is easy to break and age, and the service life of the oil tank is short. In conclusion, the existing self-sealing functional oil tank has the obvious defects of poor self-sealing effect and short service life.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the oil tank with the composite structure and the self-sealing function, and solves the problems of poor self-sealing effect and short service life of the existing oil tank with the self-sealing function.
The invention is realized by the following technical scheme.
An oil tank with a composite structure and a self-sealing function comprises a protective framework layer, a self-sealing layer and a barrier layer which are sequentially arranged from outside to inside; the self-sealing layer is formed on the inner surface of the protective framework layer by curing liquid rubber through a rotational molding process, and the barrier layer is formed on the inner surface of the self-sealing layer through a rotational molding process; or the self-sealing layer is independently cured and molded by adopting liquid rubber, is tightly attached to the outer surface of the barrier layer through the elasticity of the self-sealing layer, and finally the protective framework layer is molded on the outer surface of the self-sealing layer.
The liquid rubber in the invention can be modified high-adhesiveness liquid rubber, and when the self-sealing layer is made of the modified high-adhesiveness liquid rubber, the self-sealing layer is not easy to fall off from the barrier layer, and the self-sealing layer has no requirement on the hardness of the protective framework layer and the barrier layer. The modified high-adhesiveness liquid rubber is preferably dealcoholized condensed type liquid silicone rubber which comprises 20-25% of dimethyl siloxane, 30-40% of silicon dioxide powder, 30-40% of dimethyl siloxane and 5-10% of organic tin catalyst.
The liquid rubber in the invention can also be common liquid rubber, a self-sealing layer formed by common liquid rubber is easy to separate from the protective framework layer and the barrier layer, the hardness of the barrier layer needs to be greater than that of the self-sealing layer, and the self-sealing layer is tightly attached to the outer surface of the barrier layer through the support of the barrier layer and the elasticity of the self-sealing layer.
The liquid rubber of the self-sealing layer meets the requirements that the tearing strength is more than or equal to 0.5kN/m and the elongation at break is more than or equal to 100 percent.
The number of the self-sealing layers is more than or equal to 1, and the thickness of the self-sealing layers is more than or equal to 2 mm.
The protective framework layer is made of high molecular polymer or reinforced high molecular polymer. The high molecular polymer used as the protective skeleton layer is specifically one or a mixture of any combination of polyolefin, polyamide, polyimide, fluorine-containing polymer and acrylonitrile-butadiene-styrene copolymer. The reinforced high molecular polymer used as the protective skeleton layer is a reinforced high molecular polymer obtained by improving the crosslinking degree of the high molecular polymer, such as crosslinked polyethylene; or a high molecular polymer reinforced by glass fibers or carbon fibers.
In the invention, in order to further improve the protection performance of the protection framework layer, polyurea, carbon fiber or a mixture thereof is coated on the outer surface of the protection framework layer.
The barrier layer has an oil-resistant function, and the barrier layer is made of an oil-resistant high-molecular polymer or reinforced high-molecular polymer. The high molecular polymer used as the barrier layer is specifically one of polyolefin, polyamide, polyimide, fluorine-containing polymer and acrylonitrile-butadiene-styrene copolymer or a mixture of any combination thereof. The reinforced high molecular polymer as the barrier layer is a reinforced high molecular polymer obtained by increasing the crosslinking degree of the high molecular polymer, such as crosslinked polyethylene; or a high molecular polymer reinforced by glass fibers or carbon fibers.
The invention has the beneficial technical effects that: the self-sealing layer of the oil tank is not easy to fall off, and the self-sealing effect is greatly improved; the elastic holes in the protective framework layer and the blocking layer have certain self-contraction characteristics, the size of the elastic hole is smaller than that of the elastic piece, the elastic hole is smooth and has no petal-shaped flanging, and deformation recovery of the elastic hole of the self-sealing layer is less obstructed; the self-sealing layer is arranged between the protective framework layer and the barrier layer, and is not directly subjected to external scraping, impact, illumination and washing of internal oil, so that the service life is longer; the oil tank has at least two layers which can be integrally and seamlessly formed, and the integral strength of the oil tank is greatly improved.
Drawings
Fig. 1 is a schematic diagram of an oil tank with a composite structure and a self-sealing function.
Detailed Description
The present invention will be described in detail with reference to fig. 1 and the embodiments.
The oil tank with the composite structure and the self-sealing function as shown in fig. 1 comprises a protective framework layer 1, a self-sealing layer 2 and a barrier layer 3 which are sequentially arranged from outside to inside; the self-sealing layer 2 is formed by solidifying liquid rubber on the inner surface of the protective framework layer 1 through a rotational molding process, and the barrier layer 3 is formed on the inner surface of the self-sealing layer 2 through a rotational molding process; or the self-sealing layer is independently cured and formed by adopting liquid rubber, is tightly attached to the outer surface of the barrier layer 3 through the elasticity of the self-sealing layer, and finally the protective framework layer 1 is formed on the outer surface of the self-sealing layer 2.
When the self-sealing layer 2 is made of modified high-adhesiveness liquid rubber, the self-sealing layer 2 is not easy to separate from the protective framework layer 1 and the barrier layer 3, and the requirements on the hardness of the protective framework layer 1 and the barrier layer 3 are avoided. The modified high-adhesiveness liquid rubber is preferably dealcoholized condensed type liquid silicone rubber which contains 20-25% of dimethyl siloxane, 30-40% of silicon dioxide powder, 30-40% of dimethyl siloxane and 5-10% of organic tin catalyst. When the material of the self-sealing layer 2 is common liquid rubber, the self-sealing layer 2 is easily separated from the protective framework layer 1 and the barrier layer 3, the hardness of the barrier layer 3 needs to be greater than that of the self-sealing layer 2, the self-sealing layer 2 is tightly attached to the outer surface of the barrier layer 3 through the support of the barrier layer 3 and the elasticity of the self-sealing layer 2, and the self-sealing effect is prevented from being influenced by the falling of the self-sealing layer 2. The liquid rubber of the self-sealing layer (2) meets the requirements that the tearing strength is more than or equal to 0.5kN/m and the elongation at break is more than or equal to 100 percent.
The number of the layers of the self-sealing layer 2 is more than or equal to 1, and the thickness of the self-sealing layer 2 is more than or equal to 2 mm.
The material of the protective framework layer 1 is high molecular polymer or reinforced high molecular polymer. The high molecular polymer used as the protective skeleton layer 1 is specifically one of polyolefin, polyamide, polyimide, fluorine-containing polymer, acrylonitrile-butadiene-styrene copolymer or a mixture of any combination thereof. The reinforced high molecular polymer as the protective skeleton layer 1 is a reinforced high molecular polymer obtained by increasing the crosslinking degree of the high molecular polymer, such as crosslinked polyethylene; or a high molecular polymer reinforced by glass fibers or carbon fibers. In order to further improve the protection performance of the protection framework layer 1, polyurea, carbon fiber or a mixture thereof is coated on the outer surface of the protection framework layer 1, and a foaming layer is formed on the inner surface of the protection framework layer 1, wherein the foaming layer is made of foamed polyethylene or foamed polyurethane.
The barrier layer 3 has an oil-resistant function, and the material of the barrier layer 3 is an oil-resistant high molecular polymer or reinforced high molecular polymer. The polymer used as the barrier layer 3 is specifically one of polyolefin, polyamide, polyimide, fluoropolymer, acrylonitrile-butadiene-styrene copolymer, or a mixture of any combination thereof. The reinforced high molecular polymer as the barrier layer 3 is a reinforced high molecular polymer obtained by increasing the crosslinking degree of the high molecular polymer, such as crosslinked polyethylene; or a high molecular polymer reinforced by glass fibers or carbon fibers. The inner surface of the barrier layer 3 may also be lined with a layer of erosion resistant material.
The self-sealing layer 2 adopts the self-sealing working principle: after the shell fragment punctures from sealing layer 2, do not form circular broken hole, only form diffusion form crackle to take place great elastic deformation, elastic deformation resumes after the shell fragment breaks away from sealing layer 2, consequently from sealing layer 2 has from the sealing function, can prevent effectively that incasement fluid from leaking. In addition, the elastic holes in the protective framework layer 1 and the blocking layer 3 have certain self-contraction characteristics, the size of the elastic hole is smaller than that of the elastic sheet, and the elastic hole is smooth and has no petal-shaped flanging, so that deformation recovery of the elastic hole in the self-blocking layer 2 is less obstructed.
The self-sealing layer 2 is arranged between the protective framework layer 1 and the barrier layer 3, and is not directly subjected to external scraping, impact, illumination and washing of internal oil, so that the service life is longer.
The first embodiment is as follows: the material of the protective framework layer of the oil tank with the self-sealing function is specifically polyolefin with the crosslinking degree of more than 60%, the self-sealing layer is made of common liquid rubber with the tear strength of more than or equal to 5kN/m and the elongation at break of more than or equal to 200%, and the material of the barrier layer is polyamide.
In the embodiment, the plastic composite material is formed by adopting a rotational molding process, polyolefin with the crosslinking degree of more than 60% is added into a rotational molding die for the first time to form a protective framework layer, common liquid rubber with the tearing strength of more than or equal to 5kN/m and the elongation at break of more than or equal to 200% is added for the second time to form a self-sealing layer on the inner surface of the protective framework layer, polyamide is added for the third time to form a barrier layer on the inner surface of the self-sealing layer. In the embodiment, the protective framework layer, the self-sealing layer and the blocking layer of the oil tank are integrally formed in a seamless mode, so that the overall strength of the self-sealing oil tank is improved. To the protection casing layer, from sealing layer and the barrier layer of different thickness, carried out from the effect verification of sealing, the test data as follows:
example two: the material of the oil tank protective framework layer with the self-sealing function is specifically glass fiber reinforced plastic, the self-sealing layer is made of dealcoholized condensed type liquid silicone rubber with the tear strength of more than or equal to 5kN/m and the elongation at break of more than or equal to 200 percent, and the material of the barrier layer is polyimide; wherein, the dealcoholization condensation type liquid silicone rubber comprises 24 percent of dimethyl siloxane, 40 percent of silicon dioxide powder, 30 percent of dimethyl silicone polymer, 5.5 percent of organic tin catalyst and 0.5 percent of impurity.
In the hand pasting forming of the protective framework layer, the protective framework layer is used as a rotational molding die, dealcoholized condensed type liquid silicone rubber with the tear strength of more than or equal to 5kN/m and the elongation at break of more than or equal to 200% is added, a self-sealing layer is formed on the inner surface of the protective framework layer, and then polyimide is added, so that a barrier layer is formed on the inner surface of the self-sealing layer. In the embodiment, the protective framework layer, the self-sealing layer and the barrier layer of the oil tank are integrally formed in a seamless mode, so that the overall strength of the self-sealing oil tank is improved; meanwhile, the dealcoholized condensed type liquid silicone rubber is modified high-adhesiveness liquid rubber, and the self-sealing layer of the oil tank is not easy to fall off, so that the self-sealing effect is greatly improved. To the protection casing layer, from sealing layer and the barrier layer of different thickness, carried out from the effect verification of sealing, the test data as follows:
example three: the material of the oil tank protective framework layer with the self-sealing function is specifically glass fiber reinforced plastic, the self-sealing layer is made of dealcoholized condensed type liquid silicone rubber with the tear strength of more than or equal to 5kN/m and the elongation at break of more than or equal to 200 percent, and the material of the barrier layer is glass fiber reinforced plastic; wherein, the dealcoholization condensation type liquid silicone rubber comprises 20.5 percent of dimethyl siloxane, 30 percent of silicon dioxide powder, 39 percent of polydimethylsiloxane, 10 percent of organic tin catalyst and 0.5 percent of impurity.
The barrier layer of this embodiment is pasted by hand and is formed, closely laminates through the elasticity of self and barrier layer surface after independently solidifying the shaping from the sealing layer, pastes at last at the outer surface hand of sealing layer and forms protection casing layer. In the embodiment, the protective framework layer, the self-sealing layer and the barrier layer of the oil tank are integrally formed in a seamless mode, so that the overall strength of the self-sealing oil tank is improved; meanwhile, the dealcoholized condensed type liquid silicone rubber is modified high-adhesiveness liquid rubber, and the self-sealing layer of the oil tank is not easy to fall off, so that the self-sealing effect is greatly improved. To the protection casing layer, from sealing layer and the barrier layer of different thickness, carried out from the effect verification of sealing, the test data as follows:
example four: the material of the oil tank protective framework layer with the self-sealing function is specifically polyolefin with the crosslinking degree of more than 60%, the self-sealing layer is made of common liquid rubber with the tear strength of more than or equal to 5kN/m and the elongation at break of more than or equal to 200%, and the material of the barrier layer is glass fiber reinforced plastic.
The barrier layer of the embodiment is formed by hand pasting, and the self-sealing layer is tightly attached to the outer surface of the barrier layer through the elasticity of the self-sealing layer after being independently cured and formed; the protective framework layer is a split structure formed by molding, the split structure is respectively tightly attached to the outer surface of the self-sealing layer, and then all the split structures are connected and fixed. The self-sealing layer and the barrier layer of the oil tank in the embodiment are integrally formed in a seamless mode, and the overall strength of the self-sealing oil tank is improved to a certain extent. To the protection casing layer, from sealing layer and the barrier layer of different thickness, carried out from the effect verification of sealing, the test data as follows:
what has been described above is merely a preferred embodiment of the invention, rather than a full embodiment. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (11)
1. An oil tank with a composite structure and a self-sealing function is characterized by comprising a protective framework layer (1), a self-sealing layer (2) and a barrier layer (3) which are sequentially arranged from outside to inside; the self-sealing layer (2) enables liquid rubber to be solidified and formed on the inner surface of the protective framework layer (1) through a rotational molding process, and the barrier layer (3) is formed on the inner surface of the self-sealing layer (2) through the rotational molding process; or the self-sealing layer (2) is independently cured and molded by adopting liquid rubber, is tightly attached to the outer surface of the barrier layer (3) through the elasticity of the self-sealing layer, and finally the protective framework layer (1) is molded on the outer surface of the self-sealing layer (2).
2. The fuel tank with the self-closing function according to claim 1, wherein the material of the self-closing layer (2) is modified high-adhesion liquid rubber.
3. The fuel tank with self-closing function as claimed in claim 2, wherein the modified high-adhesiveness liquid rubber is dealcoholized condensed type liquid silicone rubber comprising dimethyl siloxane 20-25%, silica powder 30-40%, dimethyl silicone 30-40% and organic tin catalyst 5-10%.
4. The fuel tank with the self-closing function according to claim 1, wherein the material of the self-closing layer (2) is common liquid rubber, and the hardness of the barrier layer (3) is greater than that of the self-closing layer (2).
5. The fuel tank with self-closing function according to claim 1, wherein the liquid rubber of the self-closing layer (2) satisfies tear strength of 0.5kN/m or more and elongation at break of 100% or more.
6. The fuel tank with the self-sealing function according to claim 3 or 4, wherein the number of the self-sealing layers (2) is greater than or equal to 1, and the thickness of the self-sealing layers is greater than or equal to 2 mm.
7. The fuel tank with the self-closing function according to claim 1, wherein the protective skeleton layer (1) is made of high polymer or reinforced high polymer.
8. The fuel tank with the self-closing function according to claim 7, wherein the high molecular polymer as the protective skeleton layer (1) is one of polyolefin, polyamide, polyimide, fluorine-containing polymer, acrylonitrile-butadiene-styrene copolymer or a mixture of any combination thereof; the reinforced high molecular polymer as the protective framework layer (1) is a cross-linked high molecular polymer or a high molecular polymer reinforced by glass fiber or carbon fiber.
9. The fuel tank with the self-closing function according to claim 1, wherein the outer surface of the protective skeleton layer (1) is coated with polyurea, carbon fiber or a mixture thereof. The outer surface of the protective framework layer (1) is coated with polyurea, carbon fiber or a mixture thereof.
10. The fuel tank with the self-closing function according to claim 1, wherein the barrier layer (3) has an oil-resistant function, and the material of the barrier layer (3) is an oil-resistant high polymer or reinforced high polymer.
11. A fuel tank with self-closing function according to claim 10, wherein the high molecular polymer as the barrier layer (3) is one of polyolefin, polyamide, polyimide, fluorine-containing polymer, acrylonitrile-butadiene-styrene copolymer or a mixture of any combination thereof; the reinforced high molecular polymer as the barrier layer (3) is a crosslinked high molecular polymer or a high molecular polymer reinforced by glass fiber or carbon fiber.
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| CN111237105B (en) | 2024-06-25 |
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