CN106584883A - Underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit - Google Patents

Underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit Download PDF

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Publication number
CN106584883A
CN106584883A CN201611114442.4A CN201611114442A CN106584883A CN 106584883 A CN106584883 A CN 106584883A CN 201611114442 A CN201611114442 A CN 201611114442A CN 106584883 A CN106584883 A CN 106584883A
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core
layer
unit
fiber
crashworthiness
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CN201611114442.4A
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CN106584883B (en
Inventor
梅志远
周晓松
刘令
潘鹤斌
张焱冰
李华东
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Naval University of Engineering PLA
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Naval University of Engineering PLA
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/04Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28Shaping operations therefor
    • B29C70/30Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/68Shaping 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
    • B29C70/70Completely encapsulating inserts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/88Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts characterised primarily by possessing specific properties, e.g. electrically conductive or locally reinforced

Abstract

The invention provides an underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit. The underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit comprises a fiber coiling surface layer and an inner buoyancy core. The underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit is characterized in that the fiber coiling surface layer coils the surface of the inner buoyancy core; the thickness of the fiber coiling surface layer is less than the size of the inner buoyancy core; the inner buoyancy core is elliptic and is prepared from the materials including a deep-sea buoyancy material; the materials of the fiber coiling surface layer include a fiber resin substrate and is formed by coiling through tension in a wet manner and then once curing under normal temperature. With the adoption of the underwater lightweight buoyancy compensating type composite material, solid-core, crash-proofing and energy absorbing structure unit, the requirement on crash-proofing and energy absorbing performances of an underwater protecting structure is met, and a certain reserve buoyancy can be provided to a structure platform, so that the problem of conflict between the requirement on the crash-proofing and energy absorbing performances of the underwater structure and the limitation on the design weight of the structure platform can be solved.

Description

Lightweight buoyancy offset-type composite material solid core crashworthiness endergonic structure unit under water
Technical field
The present invention relates to fiber-reinforced resin matrix compound material reality cored structure application, and in particular to a kind of lightweight under water Buoyancy compensation type composite material solid core crashworthiness endergonic structure unit.
Background technology
Composite has the advantages that specific strength is high, specific stiffness is big, and designability stronger than energy-absorbing is good, in structural shielding Engineering field has obtained increasingly extensive concern.But in some special or extreme use environments, not only need protection Structure has excellent energy absorption characteristics, and to have preferable environmental suitability and other properties.As submerged structure is put down The design of crashworthiness safeguard structure, not only proposes high requirement to the crashworthiness barrier propterty of safeguard structure between the platform non-pressure side of a ship, and And need safeguard structure to provide certain reserve buoyancy for submerged structure platform.
The content of the invention
For above-mentioned technical problem, the present invention proposes and devises a kind of new offset-type composite wood of lightweight buoyancy under water The real core crashworthiness endergonic structure unit of material, not only meets the Functional Requirement of submerged structure platform crashworthiness safeguard structure, Er Qieneng Enough provide certain reserve buoyancy for submerged structure platform.
The invention provides one kind lightweight buoyancy offset-type composite material solid core crashworthiness endergonic structure unit under water, including fibre Dimension winding top layer and internal buoyance core, it is characterised in that:Fiber winding top layer is coated on internal buoyance core surfaces, and fiber is twined Thickness around top layer is less than internal buoyance core diameter;
Internal buoyance core is elliposoidal, and the material of internal buoyance core includes deep-sea buoyant material;
The material on fiber winding top layer includes fiber-resin matrix, using tension force wet winding technology, in normal temperature condition next time Curing molding.
It is preferred that fiber winding top layer completely coats internal buoyance core and forms real core crashworthiness endergonic structure unit.
It is preferred that the fiber system of fiber winding top layer institute type selecting includes glass fibre and aramid fiber.
It is preferred that resin matrix adopts high-performance low water absorbable resin, including polyester resin and vinyl ester resin, fiber Resin quality is 0.7 ~ 1.2 than content range.
It is preferred that the density range of internal buoyance core the selection of material is 300 kg/m3 ~ 600 kg/m3, the resistance to pressure of hydrostatic Spend for 5MPa ~ 30MPa, dynamic yield strength is 50 ~ 100MPa, linear elasticity range of strain is 0 ~ 0.1, and plasticity section range of strain is 0.1~0.6。
It is preferred that the follow-up phase of internal buoyance core is dense compaction section.
It is preferred that fiber winding top layer is using based on structural mechanical property and wet winding technology technique.
It is preferred that the winding angle scope on fiber winding top layer is 15 ~ 45, thickness and ellipsoid minor axis length ratio are wound The scope of value T/B is 0.01 ~ 0.06, and Tension design scope is 5N ~ 30N.
It is preferred that internal buoyance core cell height is 1.2 ~ 2.1 with the scope of upper and lower end face diameter ratio H/2E, ellipsoid molded line Major axis is 1.6 ~ 1.0 with short axle ratio A/B scopes.
The beneficial effects of the present invention is:Simple structure, fiber winding top layer splicing is coated on internal core surfaces, fiber Winding top layer and internal buoyance core one-step solidification moulding are composite material solid core endergonic structure unit.Internal core selects lightweight Simultaneously optimization design is elliposoidal geometry molded line feature to deep-sea high intensity buoyant material, it is ensured that composite material solid core crashworthiness endergonic structure The steady state compaction energy absorbing efficiency of unit and the realizability of top layer wet winding technology technique.Ocean ring is selected on fiber winding top layer Border adapts to fiber type and resin system and optimizes fibre resin mass ratio, to reach optimal technological forming quality and compound interface Performance.Fiber winding top layer adopts tension force wet winding technology technique, and using optimization winding pattern and thickness internal float is wound into Power core optimized model line surface, to reach optimal constraint bearing capacity and energy absorption efficiency.Fiber winding top layer and Internal buoyance core prepares characteristic, it is ensured that composite material solid core in normal temperature condition curing molding next time with preferable technique The integrity of crashworthiness endergonic structure unit.
Description of the drawings
Fig. 1 is present configuration schematic three dimensional views.
Wherein, 1- fibers winding top layer, 2- internal buoyance cores.
Fig. 2 is present configuration section size parameter schematic diagram.
H- cores height, R- semiminor axis of ellipsoid length, T- skin layer composite material thickness, E- end face radiuses.
Fig. 3 to Fig. 8 is present configuration skin layer composite material two-layer winding scenario detailed process.
Specific embodiment
With reference to Figure of description and specific embodiment, the invention will be further described:
The invention provides one kind lightweight buoyancy offset-type composite material solid core crashworthiness endergonic structure unit under water, including fiber is twined Around top layer 1 and internal buoyance core 2, fiber winding top layer 1 is coated on the table of internal buoyance core 2 using wet winding technology technique Face, much smaller than the diameter of internal buoyance core 2, internal buoyance core 2 is from light-high-strength deep-sea for fiber winding skin depth 1 Buoyant material simultaneously requires that optimization design is different elliposoidal geometry molded line features according to structural mechanical property, deep-sea buoyant material Glass microballoon size and of different sizes, matrix resin type is different, and the buoyant material mechanical property difference after molding is very big, this Bright protection be specific small range proportioning specific buoyant material type.Fiber winding top layer 1 is fine from marine environment epharmone Resin system simultaneously optimizes fibre resin mass ratio according to top layer mechanical property, and moulding process adopts tension force wet winding technology work Skill, based on the attainable optimization winding pattern of technique and thickness the surface of internal buoyance core 2 after molded line optimization, fiber are wound into Winding top layer 1 and internal buoyance core 2 form complete composite material solid core crashworthiness and inhale in normal temperature condition curing molding next time Can construction unit.Different fibers are different with the scope of application with the mechanical property of resin, and present invention protection is specific briny environment There is down the fibre resin type selecting of special mechanical property.
Used as a kind of preferred mode, fiber winding top layer 1 is completely coated on internal float using wet winding technology technique The surface of power core 2 forms real core crashworthiness endergonic structure unit, and one curing molding ensure that real core crashworthiness is inhaled under normal temperature condition The globality of energy construction unit.Fiber winds the compound interface between top layer 1 and internal buoyance core 2 to be glued connection, wet method Winding plus Tension design and one cure process guarantee the compound interface between fiber winding top layer 1 and internal buoyance core 2 Performance is intact.
Used as a kind of preferred mode, fiber winds the fibre resin system of the type selecting of top layer 1, including glass fibre and ethylene Base ester resin matrix, is respectively provided with fibre resin circle after good mechanical property and seawater corrosion resistance characteristic, and composite curing molding Face is functional, and fibre resin mass ratio is optimal through proportion optimizing.Internal buoyance core 2 is filled out from hollow glass microbead Fill the solid buoyancy material of vinyl ester-series, mechanical property and wind top layer 1 with fiber compatible matching preferably, enter one Step enhances the compound interface performance between fiber winding top layer 1 and internal buoyance core 2.
Used as a kind of preferred mode, fiber winding top layer 1 is using based on structural mechanical property and wet winding technology work The attainable winding pattern prioritization scheme of skill, including winding angle, winding thickness and winding tension.Internal buoyance core 2 is adopted Based on the elliposoidal geometry molded line feature that structural mechanical property and the fiber winding matching properties optimization design of top layer 1 are obtained.
Embodiment one
The fiber winding fibre resin system of top layer 1 is respectively the E- glass fibre of the T910 models of Mount Taishan glass fibre company production The vinyl ester resin epoxide modified with the 430LV that Nanjing Nanjing DSM company produces, internal buoyance core 2 is xianning,hubei The HW50 type lightweights deep-sea solid buoyancy material of Hai Wei composites company limited production.The first processing on numerically controlled lathe before making Go out the elliposoidal geometricshape of internal buoyance core 2, cell height is 2.1 with upper and lower end face diameter ratio H/2E, ellipsoid molded line Major axis is 1.6 with short axle ratio A/B, and winding thickness is 0.013 with ellipsoid minor axis length ratio T/B.Need before Wrapping formed Carry out the preparation of resin material, the quality proportioning of vinyl ester resin, methyl ethyl ketone peroxide firming agent and cobalt naphthenate accelerator For 100:2:1, the normal temperature cure time is 4 hours.Fiber winding top layer 1 adopts spiral winding line style, and the winding number of plies is one layer, is twined It it is 25 degree around angle, the fibre resin mass ratio on the fiber winding top layer 1 after final curing molding is about 1:1, winding layer total thickness Degree T is 1mm.Sample after the completion of winding can be fully cured molding under normal temperature environment through 4 hours.
Embodiment two
Fiber winds top layer 1 and the selected materials system of internal buoyance core 2 is same as Example 1.First in numerically controlled lathe before making On process the elliposoidal geometricshape of internal buoyance core 2, cell height is 1.6 with upper and lower end face diameter ratio H/2E, ellipse Ball-type line length axle is 1.2 with short axle ratio A/B, and winding thickness is 0.023 with ellipsoid minor axis length ratio T/B.Resin proportioning with Embodiment 1 is identical, and fiber winding top layer 1 adopts spiral winding line style, and the winding angle of ground floor is 20 degree, and the second layer is wound into Row reaming, winding angle expands as 29 degree, and the fibre resin mass ratio on the fiber winding top layer 1 after final curing molding is about 1: 1, winding layer gross thickness T is 2mm.Sample after the completion of winding can be fully cured molding under normal temperature environment through 4 hours.
Embodiment three
Fiber winds top layer 1 and the selected materials system of internal buoyance core 2 is same as Example 1.First in numerically controlled lathe before making On process the elliposoidal geometricshape of internal buoyance core 2, cell height is with the scope of upper and lower end face diameter ratio H/2E 1.3, spheroid shape line length axle is 1.0 with short axle ratio A/B scopes, and winding thickness is 0.030 with ellipsoid minor axis length ratio T/B. Resin proportioning is same as Example 1, and fiber winding top layer 1 adopts spiral winding line style, and the winding angle of ground floor is 18 degree, the Two layers of winding carry out reaming and winding angle expands as 21 degree, and third layer winds further reaming and winding angle expands 25 to Degree, the fibre resin mass ratio on the fiber winding top layer after final curing molding is about 1:1, winding layer gross thickness T is 3mm.Twine Sample after the completion of can be fully cured molding under normal temperature environment through 4 hours.

Claims (9)

1. one kind lightweight buoyancy offset-type composite material solid core crashworthiness endergonic structure unit under water, including fiber winding top layer(1) With internal buoyance core(2), it is characterised in that:The fiber winds top layer(1)It is coated on internal buoyance core(2)Surface, institute State fiber winding top layer(1)Thickness be less than the internal buoyance core(2)Diameter;
The internal buoyance core(2)For elliposoidal, the internal buoyance core(2)Material include deep-sea buoyant material;
The fiber winds top layer(1)Material include fiber-resin matrix, using tension force wet winding technology, in normal temperature condition Curing molding next time.
2. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 1, it is special Levy and be:The fiber winds top layer(1)Complete cladding internal buoyance core(2)Form real core crashworthiness endergonic structure unit.
3. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 1, it is special Levy and be:The fiber winds top layer(1)The fiber system of institute's type selecting includes glass fibre and aramid fiber.
4. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 3, it is special Levy and be:The resin matrix adopts high-performance low water absorbable resin, including polyester resin and vinyl ester resin, fibre resin Quality is 0.7 ~ 1.2 than content range.
5. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 4, it is special Levy and be:The internal buoyance core(2)The density range of the selection of material is 300 kg/m3~600 kg/m3, hydrostatic compressive resistance For 5MPa ~ 30MPa, dynamic yield strength is 50 ~ 100MPa, and linear elasticity range of strain is 0 ~ 0.1, and plasticity section range of strain is 0.1~0.6。
6. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 5, it is special Levy and be:The internal buoyance core(2)Follow-up phase be dense compaction section.
7. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 1, it is special Levy and be:The fiber winds top layer(1)Using based on structural mechanical property and wet winding technology technique.
8. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 1, it is special Levy and be:The fiber winds top layer(1)Winding angle scope be 15 ~ 45, winding thickness and ellipsoid minor axis length ratio The scope of T/B is 0.01 ~ 0.06, and Tension design scope is 5N ~ 30N.
9. the offset-type of lightweight buoyancy under water composite material solid core crashworthiness endergonic structure unit according to claim 1, it is special Levy and be:The internal buoyance core(2)Cell height is 1.2 ~ 2.1 with the scope of upper and lower end face diameter ratio H/2E, ellipsoid Molded line major axis is 1.6 ~ 1.0 with short axle ratio A/B scopes.
CN201611114442.4A 2016-12-07 2016-12-07 Underwater lightweight buoyancy offset-type composite material solid core crashworthiness endergonic structure unit Expired - Fee Related CN106584883B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111497351A (en) * 2020-05-19 2020-08-07 西湖大学 Sandwich composite pressure-resistant shell and application thereof
CN111691469A (en) * 2020-04-20 2020-09-22 浙江大学 Expanded underwater protection structure and deployment and detection method

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Publication number Priority date Publication date Assignee Title
CN111691469A (en) * 2020-04-20 2020-09-22 浙江大学 Expanded underwater protection structure and deployment and detection method
CN111497351A (en) * 2020-05-19 2020-08-07 西湖大学 Sandwich composite pressure-resistant shell and application thereof

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