CN110509645B - High positive buoyancy characteristic light high-rigidity releasable functional composite material detachable plate - Google Patents
High positive buoyancy characteristic light high-rigidity releasable functional composite material detachable plate Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/30—Layered products comprising a layer of synthetic resin comprising vinyl (co)polymers; comprising acrylic (co)polymers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B19/00—Arrangements or adaptations of ports, doors, windows, port-holes, or other openings or covers
- B63B19/12—Hatches; Hatchways
- B63B19/14—Hatch covers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/02—Organic
- B32B2266/0214—Materials belonging to B32B27/00
- B32B2266/0221—Vinyl resin
- B32B2266/0235—Vinyl halide, e.g. PVC, PVDC, PVF, PVDF
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/10—Properties of the layers or laminate having particular acoustical properties
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/70—Other properties
- B32B2307/718—Weight, e.g. weight per square meter
Abstract
The invention belongs to the technical field of composite material hatch cover plates for life raft systems of underwater vehicles, and particularly relates to a high-positive-buoyancy-property light high-rigidity releasable functional composite material detachable plate. The glass fiber reinforced plastic composite material skin is a glass fiber reinforced plastic composite material, and the glass fiber reinforced plastic composite material adopts a hand lay-up forming process or a vacuum forming process; the composite material also comprises a functional core material coated by a fiber reinforced composite material skin; the functional core material comprises a first core material layer, a second core material layer and a third core material layer which are sequentially bonded by epoxy glue or high-strength resin; and any two or three of a sound absorption core material, an anti-sound type PVC foam core material or a sound transmission type buoyancy core material, wherein at least one of the two or three is the sound absorption core material. The invention can be used for designing and manufacturing the cover plate of the lifesaving ball valve system of the underwater vehicle, and has the advantages of light weight, high rigidity, corrosion resistance, positive buoyancy and good stealth.
Description
Technical Field
The invention belongs to the technical field of composite material hatch cover plates for life raft systems of underwater vehicles, and particularly relates to a high-positive-buoyancy-property light high-rigidity releasable functional composite material detachable plate.
Background
For protection ofThe life raft container can smoothly enter and exit the submarine body when the underwater vehicle fails, the integrity and the use functional characteristic requirements of the superstructure structure are ensured under the normal navigation condition, and the light high-rigidity detachable plate made of the releasable functional composite material is designed. The detachable plate is positioned right above an outlet of a submarine life raft container, and belongs to the field of outfitting of submarine superstructure. Under normal conditions, the detachable plate is firmly connected with the automatic unlocking structure and used as a hatch cover, so that the normal walking of a sailor is guaranteed; under the unexpected accident condition of submarine, all equipment in the life raft container containing container are popped out of the cabin fast under the effect of the ejection mechanism at the bottom of the life raft container, and in addition, the life-saving ball valve container floats upwards rapidly due to the self positive buoyancy characteristic, at the moment, the automatic unlocking mechanism firmly connected with the composite material detachable plate is loosened, so that the composite material detachable plate floats upwards together with the unlocking structure connecting component under the effect of the self positive buoyancy, and before the life raft is ejected by the ejection device, the detachable plate is enabled to break away from the constraint of the automatic unlocking mechanism in advance and break away from the deck, and the life raft container is enabled to float upwards rapidly. Although the existing composite material detachable plate has good strength, rigidity and acoustic characteristics, the density of the sound absorption core material is equivalent to that of water, and the density of the composite material skin is greater than that of water, so that the automatic unlocking mechanism connecting piece cannot be taken away by the detachable plate under the positive buoyancy characteristic of the detachable plate, and the life-saving ball valve is impacted with the detachable plate under the high-speed ejection effect to influence the strength and the sealing characteristic of the ball valve. In addition, the traditional composite material detachable plate is finished by adopting a hand pasting process, so that the structural uniformity of the shell plate is poor, the sound transmission performance is greatly influenced, and in addition, the structural strength and the rigidity characteristic of the plate body are low due to the hand pasting forming process. From the design point of view, in order to meet the requirement of positive buoyancy property of the composite material detachable plate, the reduction of the density of the core material is the most effective way, but at present, the density of the sound absorption core material which can meet the strength and rigidity properties of the detachable plate in the working environment is generally 1.0g/cm with water3The density of the core material is equivalent, the requirement of the positive buoyancy of the detachable plate cannot be met, therefore, the core material with other functional characteristics can only be selected, such as a PVC foam core material with an anti-sound function or a buoyancy core material with a sound transmission function, and the density of the PVC foam core material meeting the strength and rigidity characteristics of the detachable plateThe degree range is 0.25g/cm3~0.4g/cm3Much lower than the density of water; and the density of the buoyancy core material is 0.4g/cm3Left and right, also much less than the density of water; obviously, both of them can be used as the core material for the composite material detachable plate with the positive buoyancy functional characteristic, but the sound absorption functional characteristic of the detachable plate can not be realized.
Disclosure of Invention
The invention aims to provide a light high-rigidity releasable functional composite material detachable plate, which can realize the positive buoyancy characteristic of the detachable plate, simultaneously meet the requirement of sound absorption characteristic, and simultaneously have the characteristics of light weight and high rigidity.
In order to achieve the purpose, the invention adopts the following technical scheme.
The high-positive-buoyancy-characteristic light high-rigidity releasable functional composite detachable plate comprises a fiber reinforced composite skin 1, wherein the fiber reinforced composite skin 1 is a glass fiber reinforced plastic composite material, and the glass fiber reinforced plastic composite material adopts a hand lay-up forming process or a vacuum forming process;
the composite material further comprises a functional core material 5 coated by a fiber reinforced composite material skin; the functional core material 5 comprises a first core material layer 2, a second core material layer 3 and a third core material layer 4 which are bonded by epoxy glue in sequence;
the first core material layer 2, the second core material layer 3 and the third core material layer 4 are any two or three of sound absorption core materials, sound reflection type PVC foam core materials or sound transmission type buoyancy core materials, and at least one of the core materials is a sound absorption core material.
The functional core material is an I-shaped sound absorption core material, wherein the first core material layer 2 is a sound transmission type buoyancy core material, the second core material layer 3 is a sound absorption core material, and the third core material layer 4 is a sound reflection type PVC foam core material.
The functional core material is II type sound absorption core material, wherein the first core material layer 2 is sound absorption core material, and the second core material layer 3 and the third core material layer 4 are anti-sound PVC foam core material.
The high positive buoyancy light high-rigidity releasable functional composite material detachable plate is further improved, the first core material layer 2 is a sound absorption core material, and when the second core material layer 3 and the third core material layer 4 are bonded, grooving is carried out on the core material so as to increase a bonding interface and improve bonding strength;
the fiber reinforced composite material skin 1 is made of glass fiber reinforced composite materials, wherein the reinforced fibers are SW220 plain woven fabrics, the resin is 30LV vinyl ester resin fiber reinforced composite material skin 1 is of a variable-thickness structure, specifically, the functional core material slope area skin is thickened, and the thickest part skin of the functional core material is thinned.
In addition to the further improvement of the releasable functional composite material detachable plate with high positive buoyancy, the density of the first core material layer 2 is equal to or less than 0.6g/cm3, and the density of the second core material layer 3 and the third core material layer 4 is equal to or less than 0.6g/cm 3.
The further improvement of the high positive buoyancy characteristic light high rigidity releasable functional composite material detachable plate further comprises a reinforcing rib 8 arranged on the surface of the detachable plate, wherein the reinforcing rib 8 is made of carbon/glass hybrid fiber reinforced composite materials, the hybrid mode is interlayer hybrid or in-plane hybrid, and the reinforced fiber materials can be unidirectional fibers or fabrics.
The high positive buoyancy characteristic light high-rigidity releasable functional composite material detachable plate is further improved, the reinforcing ribs 8 are made of carbon/glass interlayer hybrid composite materials, reinforcing fibers comprise T700 unidirectional fabric and SW220 plain fabric, resin refers to 350 epoxy resin, SW220 orthogonal fabric is laid on the upper surface layer and the lower surface layer of a reinforcing rib skin, T700 unidirectional fabric is laid in the middle of the reinforcing rib skin, and the reinforcing ribs 8 are made of a vacuum forming process; the reinforcing rib 8 is of an edge thickness structure, and the thickness of the reinforcing rib is gradually reduced in the area close to the lap joint plate.
The detachable plate is further improved by a high positive buoyancy characteristic light high-rigidity releasable functional composite detachable plate, and further comprises a lap plate 6 which is arranged on the edge of the high positive buoyancy characteristic light high-rigidity releasable functional composite detachable plate and is coated by a fiber reinforced composite skin 1, and the lap plate can be releasably and firmly connected to a hatch opening of equipment through an automatic unlocking structure.
The detachable plate is characterized in that the lap joint plate 6 is provided with a connecting hole 7, and the connecting hole 7 is connected with an automatic unlocking structure through a screw and a metal gasket.
The beneficial effects are that:
in order to realize the positive buoyancy characteristic of the detachable plate and simultaneously meet the requirement of the sound absorption characteristic of the detachable plate, the core material of the detachable plate adopts a sandwich structure consisting of at least two core materials, namely, the upper core material and the lower core material are sound transmission type buoyancy core materials, the middle core material adopts a sound absorption core material, or the uppermost layer is a buoyancy core material, the middle layer is a sound absorption core material, the lowermost layer is an anti-sound type PVC foam core material, and the positive buoyancy and sound absorption type characteristic requirements of the detachable plate can be realized by the two schemes. The invention can be used for designing and manufacturing the cover plate of the lifesaving ball valve system of the underwater vehicle, and has the advantages of light weight, high rigidity, corrosion resistance, positive buoyancy and good stealth.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a half sectional view of the present invention;
FIG. 3 is a schematic structural view of example 2;
FIG. 4 is a half sectional view of embodiment 2;
FIG. 5 is a schematic structural view of example 3;
FIG. 6 is a half sectional view of embodiment 2;
wherein the reference numerals include:
1-composite material skin, 2-first core material layer 2, 3-second core material layer, 4-third core material layer, 5-detachable plate round hole, 6-detachable plate lap joint plate, 7-round hole, 8-reinforcing rib and 9-core material for reinforcing rib.
Detailed Description
The invention is described in detail below with reference to specific embodiments.
Example 1:
referring to fig. 1 and 2, the fiber reinforced composite material skin 1 is included, the fiber reinforced composite material skin 1 is a glass fiber reinforced plastic composite material, and the glass fiber reinforced plastic composite material adopts a hand lay-up forming process or a vacuum forming process; the composite material further comprises a functional core material 5 coated by a fiber reinforced composite material skin; the functional core material 5 comprises a first core material layer 2, a second core material layer 3 and a third core material layer 4 which are sequentially bonded by epoxy glue or high-strength resin; in the specific implementation process, the actual shape of the hatch may be regular or irregular, and in this embodiment, the hatch is of a circular-like structure, depending on the hatch structure or shape and other factors.
The fiber reinforced composite material skin 1 is made of a glass fiber reinforced composite material, wherein the reinforced fibers comprise SW220 plain weave fabric, the resin comprises 430LV vinyl ester resin, and the fiber reinforced composite material skin 1 adopts a vacuum forming process; for adapting to actual structure and controlling the demand, fibre reinforced fiber reinforced composite covering 1 adopts the thickness of change design, specifically indicates the regional covering of sandwich structure slope thickening, the regional thickest position covering attenuate of intermediate layer.
First core material layer 2, second core material layer 3, third core material layer 4 are perspective buoyancy core material, sound absorbing material and PVC anti-sound material respectively, the recess is seted up to the contact surface on first core material layer 2, second core material layer 3, third core material layer 4 to it is fixed to adopt the epoxy glue that bonding property is good to glue. In the embodiment, the sound absorption material adopts the existing sound absorption core material, and the material density is about 0.97g/cm3The density of the anti-sound type PVC foam is 0.38g/cm3The sound-transmitting buoyancy core material is a high-strength buoyancy core material with the density of about 0.40.38g/cm3The thicknesses of the three core materials are respectively 20mm, 19mm and 19 mm.
The composite material detachable plate is formed in the sequence that firstly, a mould is manufactured; secondly, the first core material layer 2, the second core material layer 3 and the third core material layer 4 are respectively processed and formed, grooving is carried out on the contact surfaces, epoxy glue is used for bonding the core materials until the core materials are completely cured to form the functional core material 5, the fiber fabric on the upper surface of the composite material detachable plate is paved in the mold, then the functional core material 5 is placed on the surface of the fiber fabric of the mold, the fiber fabric on the lower surface of the core material 5 and the surface of the fiber fabric are paved, and finally, one-time vacuum forming is carried out.
And after the composite material detachable plate is formed, grooving and polishing treatment are respectively carried out.
On the premise that a detachable plate of certain type of existing equipment is designed according to embodiment 1 and keeps performance characteristics basically equivalent to the stealth and the like of an original detachable plate, embodiment 1 corresponds to the detachable plate with the water surface weight of 43kg and the underwater weight of-16.18 kg; the original detachable plate model has 66.54kg of water surface weight, 11.98kg of underwater weight, the modulus of the buoyancy core material is about 1GPa, the modulus of the PVC foam core material is about 390MPa, and the modulus of the sound absorption material is about 70MPa, so that the rigidity characteristic and the positive buoyancy characteristic of the detachable plate constructed based on the scheme of the embodiment 1 are far superior to those of the original detachable plate.
Example 2:
referring to fig. 3, 4, and 6, the structure of embodiment 2 is substantially the same as embodiment 1 except that: the detachable plate made of the composite material is square in shape, the surface of the inner wall of the detachable plate is provided with a reinforcing rib 8, and the detachable plate is not provided with a lap plate.
The reinforcing ribs 8 are made of carbon/glass hybrid fiber reinforced composite materials, the hybrid mode is interlayer hybrid or in-plane hybrid, and the reinforced fiber materials can be unidirectional fibers or fabrics. In this embodiment, the reinforcing rib 8 is made of a carbon/glass interlayer hybrid composite material, in which the reinforcing fiber: t700 unidirectional fabric, SW220 plain fabric, resin: 350 of epoxy resin, SW220 orthogonal fabrics are laid on the upper surface layer and the lower surface layer of the reinforcing rib skin, T700 unidirectional cloth is laid in the middle of the reinforcing rib skin, and the reinforcing rib 8 adopts a vacuum forming process; furthermore, the reinforcing ribs 8 are designed with a variable thickness. The core material of the reinforcing rib 8 is made of 9-reflection type PVC foam material, and the reinforcing rib can be manually pasted or vacuum-formed on the surface of the inner wall of the composite material detachable plate flat plate.
The first core material layer 2, the second core material layer 3 and the third core material layer 4 are respectively made of sound absorption materials, sound transmission buoyancy core materials and anti-sound PVC foam materials.
On the premise that the stealth functional characteristics of the detachable plate are basically equivalent to those of the original detachable plate, the weight advantages of the detachable plate in the embodiment 2 are mainly shown in that the weight of the water surface of the detachable plate in the embodiment 1 is 48kg, and the weight of the underwater plate is-18.18 kg; the original detachable plate model is 72.43kg in water surface weight and 9.62kg in underwater weight, and in addition, as the modulus of the buoyancy core material is about 1.2GPa, the modulus of the foam core material is about 300MPa and the modulus of the sound absorption material is about 70MPa, compared with the embodiment 1, the rigidity and the overall strength of the embodiment 2 are greatly improved, the detachable plate model has better capabilities of resisting various damages such as impact, strain and the like, and the performance of the detachable plate model can still be ensured under high-speed navigation and high wind waves.
Example 3:
referring to fig. 5, the structure of embodiment 3 is substantially the same as embodiment 1 except that: the appearance of the composite material detachable plate is square, and lap plates are arranged on three sides of the composite material detachable plate. In addition, the functional core material 2 is a sound absorption material, and the functional core materials 3 and 4 are both made of sound reflection type PVC foam materials; the fiber reinforced composite material skin 1 is made of a glass fiber reinforced composite material. Wherein the reinforcing fiber: e800 multiaxial fabric, resin: 430LV vinyl resin.
On the premise that the stealth functional characteristics of the detachable plate are basically equivalent to those of the original detachable plate, the weight advantages of the detachable plate in the embodiment 3 are mainly represented by that the weight of the water surface of the detachable plate in the embodiment 1 is 41.25kg, and the weight of the underwater plate is-15.26 kg; the original detachable plate model has the weight of 63.28kg on the water surface and the weight of 12.36kg under water. Compared with the structure of the third embodiment 1 and the structure of the third embodiment 2, on the premise of ensuring the rigidity and the acoustic performance, the strength distribution of the plate surface is more uniform, and the sound absorption and reflection effects are better.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (6)
1. The high-positive-buoyancy-characteristic light high-rigidity releasable functional composite material detachable plate is characterized by comprising a fiber reinforced composite material skin (1), wherein the fiber reinforced composite material skin (1) is a glass fiber reinforced plastic composite material, and the glass fiber reinforced plastic composite material adopts a hand lay-up forming process or a vacuum forming process;
the composite material further comprises a functional core material (5) coated by the fiber reinforced composite material skin; the functional core material (5) comprises a first core material layer (2), a second core material layer (3) and a third core material layer (4) which are bonded by epoxy glue in sequence;
the composite material detachable plate is formed in the sequence that firstly, a mould is manufactured; secondly, respectively processing and forming the first core material layer, the second core material layer and the third core material layer, grooving the contact surfaces, bonding the first core material layer, the second core material layer and the third core material layer by using epoxy glue until the epoxy glue is completely cured to form the functional core material, flatly paving the upper surface fiber fabric of the composite material detachable plate in the mold, then putting the functional core material on the surface of the fiber fabric of the mold, flatly paving the lower surface fiber fabric on the surfaces of the core material and the fiber fabric, and finally carrying out primary vacuum forming;
the carbon/glass hybrid fiber reinforced composite material is adopted as the reinforcing rib (8), the hybrid mode is interlayer hybrid or in-plane hybrid, and the reinforced fiber material is unidirectional fiber or fabric;
the reinforcing ribs (8) are made of carbon/glass interlayer hybrid composite materials, wherein reinforcing fibers comprise T700 unidirectional fabric and SW220 plain weave fabric, resin refers to 350 epoxy resin, SW220 orthogonal fabric is paved on the upper surface layer and the lower surface layer of a composite material reinforcement skin, T700 unidirectional fabric is paved in the middle of the composite material reinforcement skin, and the reinforcing ribs (8) are made by a vacuum forming process; the reinforcing ribs (8) are of variable thickness structures, and the thickness of the reinforcing ribs is gradually reduced in the area close to the lap joint plate;
the fiber reinforced composite material skin (1) is a glass fiber reinforced composite material, wherein the reinforced fibers refer to SW220 plain weave, and the resin refers to 30LV vinyl ester resin; the fiber reinforced composite material skin (1) is of a variable thickness structure, specifically, the skin in a slope region of a functional core material is thickened, and the skin at the thickest part of the functional core material is thinned;
the first core material layer (2), the second core material layer (3) and the third core material layer (4) are any two or three of a sound absorption core material, an anti-sound type PVC foam core material or a sound transmission type buoyancy core material, and at least one of the first core material layer, the second core material layer and the third core material layer is a sound absorption core material;
the density of the second core material layer (3) and the third core material layer (4) is less than or equal to 0.6g/cm3。
2. The high positive buoyancy property lightweight high stiffness releasable functional composite removable panel according to claim 1, wherein the functional core is an I-type sound absorbing core, wherein the first core layer (2) is an acoustically transparent buoyant core, the second core layer (3) is a sound absorbing core, and the third core layer (4) is an acoustically reflective PVC foam core.
3. The high positive buoyancy characteristic lightweight high stiffness releasable functional composite removable panel according to claim 1, wherein the functional core material is type II sound absorbing core material, wherein the first core material layer (2) is sound absorbing core material, and the second core material layer (3) and the third core material layer (4) are anti-sound PVC foam core material.
4. The high positive buoyancy characteristic light high rigidity releasable functional composite material detachable plate according to claim 1, wherein the first core material layer (2) is a sound absorption core material, and when the second core material layer (3) and the third core material layer (4) are bonded, grooving treatment is performed on the core material to increase a bonding interface and improve bonding strength.
5. The high positive buoyancy characteristic lightweight high stiffness releasable functional composite removable panel according to claim 1, further comprising a lap panel (6) provided at an edge of the high positive buoyancy characteristic lightweight high stiffness releasable functional composite removable panel and covered by a fiber reinforced composite skin (1), the lap panel releasably and securely attached at a hatch of an apparatus by an automatic unlocking structure.
6. The high positive buoyancy characteristic light high rigidity releasable functional composite detachable plate according to claim 5, wherein the lap plate (6) is provided with a connecting hole (7), and the connecting hole (7) is connected with an automatic unlocking structure through a screw and a metal gasket.
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| CN201910819487.9A CN110509645B (en) | 2019-08-31 | 2019-08-31 | High positive buoyancy characteristic light high-rigidity releasable functional composite material detachable plate |
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| CN201910819487.9A CN110509645B (en) | 2019-08-31 | 2019-08-31 | High positive buoyancy characteristic light high-rigidity releasable functional composite material detachable plate |
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| CN110509645B true CN110509645B (en) | 2022-03-25 |
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