CN104385627A - Advanced resin-based composite material with anti-lightning surface function layer, and preparation method thereof - Google Patents
Advanced resin-based composite material with anti-lightning surface function layer, and preparation method thereof Download PDFInfo
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- CN104385627A CN104385627A CN201410542585.XA CN201410542585A CN104385627A CN 104385627 A CN104385627 A CN 104385627A CN 201410542585 A CN201410542585 A CN 201410542585A CN 104385627 A CN104385627 A CN 104385627A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000011347 resin Substances 0.000 claims abstract description 74
- 229920005989 resin Polymers 0.000 claims abstract description 74
- 238000000034 method Methods 0.000 claims abstract description 36
- 239000004744 fabric Substances 0.000 claims abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 26
- 239000000835 fiber Substances 0.000 claims abstract description 25
- 238000007598 dipping method Methods 0.000 claims abstract description 13
- 238000007731 hot pressing Methods 0.000 claims abstract description 12
- 238000007493 shaping process Methods 0.000 claims description 46
- 239000002346 layers by function Substances 0.000 claims description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 28
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- 238000003756 stirring Methods 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 15
- 229910052799 carbon Inorganic materials 0.000 claims description 15
- 239000004917 carbon fiber Substances 0.000 claims description 15
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- LLYXJBROWQDVMI-UHFFFAOYSA-N 2-chloro-4-nitrotoluene Chemical compound CC1=CC=C([N+]([O-])=O)C=C1Cl LLYXJBROWQDVMI-UHFFFAOYSA-N 0.000 claims description 11
- 150000001875 compounds Chemical class 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 11
- 238000012986 modification Methods 0.000 claims description 11
- 230000004048 modification Effects 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 8
- 239000002041 carbon nanotube Substances 0.000 claims description 8
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 8
- 239000003292 glue Substances 0.000 claims description 8
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 8
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 7
- 239000007924 injection Substances 0.000 claims description 7
- 239000002048 multi walled nanotube Substances 0.000 claims description 6
- 238000007747 plating Methods 0.000 claims description 6
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical group NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 claims description 5
- 238000013019 agitation Methods 0.000 claims description 5
- 229910021389 graphene Inorganic materials 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 4
- 238000004026 adhesive bonding Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 239000002131 composite material Substances 0.000 abstract description 38
- 238000000465 moulding Methods 0.000 abstract description 11
- 239000011248 coating agent Substances 0.000 abstract description 4
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- 229920000647 polyepoxide Polymers 0.000 description 7
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- 239000003063 flame retardant Substances 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 229920006253 high performance fiber Polymers 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 208000020442 loss of weight Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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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
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping 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
- B29C70/34—Shaping 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 and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/345—Shaping 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 and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using matched moulds
-
- 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
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping 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
- B29C70/36—Shaping 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 and impregnating by casting, e.g. vacuum casting
-
- 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
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Moulding By Coating Moulds (AREA)
- Reinforced Plastic Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses an advanced resin-based composite material with an anti-lightning surface function layer, and a preparation method thereof. The method comprises the following steps: cutting a prepreg layer by layer according to the requirements of the shape, size and mechanical performances of a composite material structure member, sequentially paving the layers of the cut prepreg in a die, and carrying out pre-compaction molding; paving the pre-compaction molded prepreg with one or more layers of dry fiber fabrics based on the main body shape of the preliminarily formed composite structure member; injecting a prepared function resin system into a sealed die cavity, dipping fiber fabrics in the die cavity, or coating the surface of each of layers of the dry fiber fabrics with the liquid function resin system to preliminarily form a three dimensional conductive function layer; carrying out hot pressing molding on the pre-compaction molded prepreg and the conductive function layer in the die to co-solidify the above two materials in order to realize overall molding; and opening the die to obtain the fiber reinforced resin-based composite material structure member with the anti-lightning surface function layer.
Description
Technical field
The invention belongs to Material Field, particularly with Advanced Resin-based Composites and the preparation method of anti-lightning surface functional layer.
Background technology
Advanced Resin-based Composites is compared with traditional material, performance, design, shaping etc. in demonstrate many superior characteristics, such as: Advanced Resin-based Composites has excellent Static and dynamic mechanical property, its specific strength and specific modulus are 3 ~ 5 times even higher of steel and aluminium alloy, and the fatigue strength of carbon fiber reinforced epoxy resin-based composite can up to the static strength of 90%, and the fatigue strength of steel and aluminium alloy only can reach the static strength of about 50%.Just because of advanced composite material, there is excellent mechanical property, thus the weight of structural member can be alleviated significantly, such as can loss of weight 25% ~ 30% on aircaft configuration.The designability of Advanced Resin-based Composites is strong, by selecting different high-performance fibers and high performance resin and adopting the in addition shaping and regulation and control of suitable technology, can obtain the advanced composite material of various structures and multiple performance.By suitably increasing and decreasing various material component, the structure-function integration of composite can be realized.Large complicated composite material structural member can also be Integratively formed, thus reduce the number of product component and connector.
Based on above characteristic, fiber-reinforced resin matrix compound material obtains applying more and more widely in Aero-Space, automobile, naval vessel and other transport services.Especially, steady growth in the consumption of composite in the past 30 years in aircaft configuration, such as, in Boeing B787 and Air Passenger A350-XWB, the consumption of composite exceedes 50% of aircraft weight.But along with the extensive application of composite on aircaft configuration, the B787 accident taken place frequently in recent years has caused the query of international community to composite safety and reliability, comprises the anti-lightning characteristic of composite material structural member, anti-ice hail and impact resistance characteristic, fuel tank lightning ignites problem, fire-retardant with resistance cigarette characteristic etc.Here both relate to the mechanics problem of composite, relate to again its functional characteristic as problems such as conductive and heat-conductives.
Carbon fibre composite not only presents anisotropy in mechanical property, and also presents significant anisotropy in conduction and heat conduction.Thermal resistance and the resistance in direction, three, space (namely along vertical fibers direction in machine direction, laying and overlay thickness direction) are different, have the difference of several order of magnitude.Usually the resistivity along carbon fiber direction in laying is minimum, and the resistivity on overlay thickness direction is maximum, is approximately 10 of the resistivity along machine direction
3~ 10
5doubly.Conduct electricity on overlay thickness direction based on composite, the present situation of heat conductivility difference, be badly in need of anti-lightning composite and the moulding technique thereof of the integration of research and development structure-function.
The method of conventional anti-lightning damage is the composite material structural member surface coverage layer of metal net at aircraft, but such a process increases the weight of structural member, deviates from mutually with light-weighted design object; Metal and resin boundary surface intensity difference, both thermal coefficient of expansions do not mate, and are easy to the stripping causing wire netting; The difficulty covering wire netting the complex geometry position of composite material structural member paving is large, and the shaping difficulty of structure-function integration is large.
Constantly perfect along with nano material basic theory, preparation technology and commercial application technology etc., such as nano silver wire, CNT and Graphene etc. have the nano material of excellent properties to receive increasing concern in conductive and heat-conductive.Wherein, CNT has light weight, large draw ratio, stable chemical property, excellent mechanical property and electrical and thermal conductivity performance, can bear the advantages such as high current density, is a kind of high performance conductive modified nano material.
The nano materials such as current CNT can be incorporated in polymer matrix composites in the following way:
(1) by carbon nanotube dispersed in the matrix resin of liquid state, then utilize liquid molding technique to prepare fibrous composite.In this molding process, resin and fiber realize compound by dipping, the complicated percolation of the resin having mixed carbon nanotube filler in multiple dimensioned porous media and all have remarkable impact to final composite property to the dipping of fiber, the Chemosensitive area of resin and curing reaction, thus adds the difficulty of liquid molding process planning, complexity and uncontrollable factor.In addition, in whole composite material structural member, all add expensive CNT, cause material cost obviously to increase.
(2) by the method for physics or chemistry, CNT is attached to the reinforcing fiber bundles of dry state or the surface of fabric, and then and liquid resin composite molding, or composite is prepared by laminated hot pressing mode again in the surface being directly attached to fiber/resin prepreg.The essential defect of this process is: for the former, on the interface that conductive and heat-conductive modification only betides fibre bundle and surrounding resin or on the interface of fabric and surrounding resin, resin-phase between fibre bundle or between fabric is to enrichment region, can not resin conductive be improved, cause can not setting up effective conductive network on overlay thickness direction; For the latter, conductive and heat-conductive modification only betides on the laminated interface of two adjacent prepregs, and CNT is difficult to the resin-rich area entering every layer of prepreg inside, the resin conductive of every layer of prepreg inside can not be improved, therefore can not set up effective conductive network on overlay thickness direction.In addition, in each interlayer region of whole composite material structural member, add expensive CNT, cause material cost obviously to increase.
In order to ensure the security that Advanced Resin-based Composites is applied on the aerospace vehicles such as aircraft, electric current can be led away rapidly in the surface region of the controllable thickness of composite material structural member and not damaged composite material mechanical property when meeting with lightning impulse, and can control in manufacturing cost, there is significant advantage in technology enforcement etc., invent a kind of Advanced Resin-based Composites with anti-lightning surface functional layer and integral forming technique method thereof.
Summary of the invention:
The present invention is in order to solve above-mentioned Advanced Resin-based Composites lightning damage problem at low cost, design a kind of carbon fiber enhancement resin base composite material with anti-lightning surface functional layer and integral forming technique method thereof, this surface functional layer achieves the overlap joint of three-dimensional conductive network, lightning current can be led away rapidly in the surface region of the controllable thickness of composite material structural member and not damaged composite material mechanical property.This functional layer can be fitted the surface of complex structural member well simultaneously, to avoid in conventional art wire netting and the problem such as interfacial shear strength is poor, profiling is difficult.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
The invention provides a kind of Advanced Resin-based Composites with anti-lightning surface functional layer, prepare as follows:
(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;
(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping, as shown in Figure 1;
(3) one deck or several layers of dry state carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2);
(4) add curing agent in the functional resin prepared in step (1), the weight ratio of curing agent and described functional resin is 3 ~ 8:1000;
(5) functional resin adding curing agent in step (4) is injected the die cavity sealed by injection system, abundant dipping dry state carbon fiber, obtain the fabric after functional resin dipping, every layer of glue content accounts for 30 ~ 40% of this layer of gross mass;
(6) hot-forming together with the fabric after in a mold the prepreg that in step (2), pre-compacted is shaping being flooded with the functional resin obtained in step (5), make two sections of material co-curing, realize global formation;
(7) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.
In step (1), described constant temperature stirs and ultrasonic processing technique condition is: mechanical agitation in water bath with thermostatic control at 60 DEG C ~ 80 DEG C, supersonic frequency is 120kHz.
In step (1), described conductive modified particle is the covalent bond product of the CNT of single wall or multi-walled carbon nano-tubes, nickel-plating carbon nanotube or arbitrary surface modification, Graphene, nano silver wire, CNT and Graphene.
In step (2), carry out the shaping process conditions of pre-compacted in described hot press for carry out the shaping 15 ~ 30min of pre-compacted under temperature 65 DEG C ~ 85 DEG C, pressure 0.1 ~ 0.25Mpa, obtain the prepreg that pre-compacted is shaping.
In step (2), the thickness in monolayer of the prepreg that described pre-compacted is shaping is 0.1 ~ 0.2mm.
In step (3), the thickness of described dry state carbon fibre fabric is 0.2 ~ 0.4mm, is spread to cover to form surface functional layer by the dry state carbon fibre fabric described in multilayer, and function of surface layer thickness accounts for 1/8 ~ 1/4 of the shaping prepreg gross thickness of described pre-compacted.
In step (4), described curing agent is diethylenetriamines.
In step (6), described heat pressing process is first at 65 DEG C ~ 85 DEG C hot pressing 20 ~ 40min, then 120 DEG C ~ 135 DEG C hot pressing 1h; Pressure is 0.1 ~ 0.3Mpa.
With a preparation method for the Advanced Resin-based Composites of anti-lightning surface functional layer, except adopting after above-mentioned matched moulds except injecting glue technology, gluing technology before matched moulds can also be adopted, comprise the steps:
(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;
(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping;
(3) add curing agent in the functional resin prepared in step (1), the weight ratio of curing agent and described functional resin is 3 ~ 8:1000;
(4) one deck or several layers of carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2), and hot-press solidifying is shaping; Described one deck or several layers of carbon fibre fabric are coated with functional resin prepared by step (3) at the front surface that paving is covered;
(5) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.
The Advanced Resin-based Composites integral forming technique method with anti-lightning surface functional layer that the present invention proposes successively is cut according to the geomery of composite material structural member and the requirement of mechanical property by prepreg, in mould, sequentially lay each layer prepreg cut, then pre-compacted is shaping.One deck or several layers of dry state fabric paving overlay on the shaping prepreg of pre-compacted by the basis of body shape again that begin to take shape composite material structural member.The functional resin system prepared is injected the die cavity of sealing, the fabric in dipping die cavity, or apply liquid functional resin system in the fabric surface of every layer of dry state, begin to take shape three-dimensional conductive functional layer.In a mold that prepreg shaping for pre-compacted is hot-forming together with conductive functional layers, make two sections of material co-curing, realize global formation.Last die sinking obtains the fiber-reinforced resin matrix compound material structural member with anti-lightning surface functional layer.
Fig. 2 gives carbon fiber enhancement resin base composite material flat part (a) with the conductive functional layers of nickel-plating carbon nanotube modification and the Ultrasonic C-Scan figure of the flat part (b) without function of surface modification after same manual simulation's lightning current hits.As can be seen from described Ultrasonic C-Scan contrast picture: surface functional layer makes the damaged area in composite wood charge level obviously reduce.
Fig. 3 gives (a), the ultrasonic B of (b) plate center cross section scans comparison diagram.Ultrasonic B scanning contrast picture as can be seen from described: surface functional layer can play good surperficial diffusing effect on flat part surface, avoid lightning current and enter dull and stereotyped inner, the damage on thickness of composite material direction is obviously reduced.
The effect that the present invention is useful is:
1. employing liquid molding technique coupling prepreg forming technique prepares the composite material structural member with anti-lightning surface functional layer, the global formation that adjustment just can realize structure-function integrated composite is combined like this on the liquid molding process planning, prepreg moulding process of original maturation, exploitativeness is strong, do not need newly added equipment and mould, preparation cost is low.
2. in the surface region of the controllable thickness of composite material structural member, build anti-lightning functional layer, effectively saved the consumption of expensive conductive modified nano material, material cost has special advantage.
3. more crucially, this materials and process technology achieves the three-dimensional conductive heat conduction strengthening modification of conductive functional layers, namely not only can form current lead-through network in roofing but also on overlay thickness direction, significantly improve the anti-lightning effect of composite material structural member.
Accompanying drawing explanation
Fig. 1 is mould and the technical process schematic diagram of the embodiment of the present invention.
Wherein, 1. patrix, 2. sealing ring, 3. counterdie, the prepreg that 4. pre-compacted is shaping, 5. glue injection channel, 6. dry state fabric, 7. with the composite material structural member of anti-lightning surface functional layer.
Fig. 2 is carbon fiber enhancement resin base composite material flat part (a) with the conductive functional layers of nickel-plating carbon nanotube modification and the Ultrasonic C-Scan figure of the flat part (b) without function of surface modification after same manual simulation's lightning current hits.
Fig. 3 is that the ultrasonic B of carbon fiber enhancement resin base composite material flat part (a) with the conductive functional layers of nickel-plating carbon nanotube modification and the center cross-sectional of the flat part (b) without function of surface modification after same manual simulation's lightning current hits scans comparison diagram.
Detailed description of the invention
Below in conjunction with accompanying drawing 1, the present invention will be further elaborated.Should be noted that following explanation is only to explain the present invention, its content not being limited.
Embodiment 1:
(1) in the mono-neck round-bottomed flask of the 250ml that agitator is housed, add PVP powder and the 100ml liquid-state epoxy resin of 0.1g drying, in the water-bath of 60 DEG C, add thermal agitation 1h, then add the nickel-plating carbon nanotube of 0.1g drying, heat in the water-bath of 60 DEG C and stir 2h again.Through 120kHz ultrasonic wave process 4h.Obtain the epoxy resin being added with multi-walled carbon nano-tubes mixed.
(2) prepreg is cut into 150mm*100mm size and in mould successively paving cover 29 layers.
Setting hot press temperature is 65 DEG C, and pressure is 0.1Mpa, and the shaping 15min of pre-compacted, obtains the prepreg that pre-compacted is shaping.
(3) cover one deck the upper surface paving of pre-compacted formed body and be of a size of the unidirectional carbon fiber dimensional fabric that 150mm*100mm thickness is 0.3mm, matched moulds.
In this embodiment, function of surface layer thickness accounts for 1/8 of gross thickness.
(4) add curing agent diethylenetriamines 5g in the functional resin prepared in step (1), and stir.
(5) resin prepared is injected the die cavity of sealing by injection system, fully dipping dry state carbon fiber.Or by functional resin matched moulds more liquid for the coating of the carbon fibre fabric of dry state surface before step (3) matched moulds.Every layer of glue content controls 30%.
(6) hot-forming together with conductive functional layers to the prepreg that in mould, pre-compacted is shaping, make two sections of material co-curing, realize global formation.The heat pressing process adopted is first 65 DEG C of hot pressing 20min, then 120 DEG C of hot pressing 1h; Pressure is 0.1Mpa.
(7) die sinking obtains the fiber-reinforced resin matrix compound material structural member with anti-lightning surface functional layer.
Embodiment 2:
(1) in the mono-neck round-bottomed flask of the 250ml that agitator is housed, add PVP powder and the 100ml liquid-state epoxy resin of 0.1g drying, in the water-bath of 70 DEG C, add thermal agitation 1h, then add 0.1g nano silver wire, heat in the water-bath of 70 DEG C and stir 2h again.Through 120kHz ultrasonic wave process 6h.Obtain the epoxy resin being added with multi-walled carbon nano-tubes mixed.
(2) prepreg is cut into 150mm*100mm size and in mould successively paving cover 29 layers.
Setting hot press temperature is 75 DEG C, and pressure is 0.15Mpa, and the shaping 20min of pre-compacted, obtains the prepreg that pre-compacted is shaping.
(3) cover one deck the upper surface paving of pre-compacted formed body and be of a size of the unidirectional carbon fiber dimensional fabric that 150mm*100mm thickness is 0.3mm, matched moulds.
In this embodiment, function of surface layer thickness accounts for 1/8 of gross thickness.
(4) add curing agent diethylenetriamines 5g in the functional resin prepared in step (1), and stir.
(5) resin prepared is injected the die cavity of sealing by injection system, fully dipping dry state carbon fiber.Or by functional resin matched moulds more liquid for the coating of the carbon fibre fabric of dry state surface before step (3) matched moulds.Every layer of glue content controls 30%.
(6) hot-forming together with conductive functional layers to the prepreg that in mould, pre-compacted is shaping, make two sections of material co-curing, realize global formation.The heat pressing process adopted is first 70 DEG C of hot pressing 30min, then 125 DEG C of hot pressing 1h; Pressure is 0.2Mpa.
(7) die sinking obtains the fiber-reinforced resin matrix compound material structural member with anti-lightning surface functional layer.
Embodiment 3:
(1) in the mono-neck round-bottomed flask of the 250ml that agitator is housed, add PVP powder and the 100ml liquid-state epoxy resin of 0.1g drying, in the water-bath of 80 DEG C, add thermal agitation 2h, then add 0.1g multi-walled carbon nano-tubes, heat in the water-bath of 80 DEG C and stir 4h again.Through 120kHz ultrasonic wave process 6h.Obtain the epoxy resin being added with multi-walled carbon nano-tubes mixed.
(2) prepreg is cut into 150mm*100mm size and in mould successively paving cover 29 layers.
Setting hot press temperature is 85 DEG C, and pressure is 0.25Mpa, and the shaping 30min of pre-compacted, obtains the prepreg that pre-compacted is shaping.
(3) cover one deck the upper surface paving of pre-compacted formed body and be of a size of the unidirectional carbon fiber dimensional fabric that 150mm*100mm thickness is 0.3mm, matched moulds.
In this embodiment, function of surface layer thickness accounts for 1/8 of gross thickness.
(4) add curing agent diethylenetriamines 5g in the functional resin prepared in step (1), and stir.
(5) resin prepared is injected the die cavity of sealing by injection system, fully dipping dry state carbon fiber.Or by functional resin matched moulds more liquid for the coating of the carbon fibre fabric of dry state surface before step (3) matched moulds.Every layer of glue content controls 30%.
(6) hot-forming together with conductive functional layers to the prepreg that in mould, pre-compacted is shaping, make two sections of material co-curing, realize global formation.The heat pressing process adopted is first 85 DEG C of hot pressing 40min, then 135 DEG C of hot pressing 1h; Pressure is 0.3Mpa.
(7) die sinking obtains the fiber-reinforced resin matrix compound material structural member with anti-lightning surface functional layer.
By reference to the accompanying drawings the specific embodiment of the present invention is described although above-mentioned; but not limiting the scope of the invention; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection scope of the present invention.
Claims (10)
1. with an Advanced Resin-based Composites for anti-lightning surface functional layer, it is characterized in that, prepare as follows:
(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;
(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping;
(3) one deck or several layers of dry state carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2);
(4) add curing agent in the functional resin prepared in step (1), the weight ratio of curing agent and described functional resin is 3 ~ 8:1000;
(5) functional resin adding curing agent in step (4) is injected the die cavity sealed by injection system, abundant dipping dry state carbon fiber, obtain the fabric after functional resin dipping, every layer of glue content accounts for 30 ~ 40% of this layer of gross mass;
(6) hot-forming together with the fabric after in a mold the prepreg that in step (2), pre-compacted is shaping being flooded with the functional resin obtained in step (5), make two sections of material co-curing, realize global formation;
(7) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.
2. with a preparation method for the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, comprise the steps:
(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;
(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping;
(3) one deck or several layers of dry state carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2);
(4) adding percentage by weight in the functional resin prepared in step (1) is 0.3 ~ 0.8% curing agent;
(5) functional resin adding curing agent in step (4) is injected the die cavity sealed by injection system, abundant dipping dry state carbon fiber, obtain the fabric after functional resin dipping, every layer of glue content accounts for 30 ~ 40% of this layer of gross mass;
(6) hot-forming together with the fabric after in a mold the prepreg that in step (2), pre-compacted is shaping being flooded with the functional resin obtained in step (5), make two sections of material co-curing, realize global formation;
(7) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.
3. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (1), described constant temperature stirs and ultrasonic processing technique condition is: mechanical agitation in water bath with thermostatic control at 60 DEG C ~ 80 DEG C, supersonic frequency is 120kHz.
4. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (1), described conductive modified particle is the covalent bond product of the CNT of single wall or multi-walled carbon nano-tubes, nickel-plating carbon nanotube or arbitrary surface modification, Graphene, nano silver wire, CNT and Graphene.
5. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (2), carry out the shaping process conditions of pre-compacted in described hot press for carry out the shaping 15 ~ 30min of pre-compacted under temperature 65 DEG C ~ 85 DEG C, pressure 0.1 ~ 0.25Mpa, obtain the prepreg that pre-compacted is shaping.
6., as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (2), the thickness in monolayer of the prepreg that described pre-compacted is shaping is 0.1 ~ 0.2mm.
7. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (3), the thickness of described dry state carbon fibre fabric is 0.2 ~ 0.4mm, spread to cover by the dry state carbon fibre fabric described in multilayer and form surface functional layer, function of surface layer thickness accounts for 1/8 ~ 1/4 of the shaping prepreg gross thickness of described pre-compacted.
8., as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (4), described curing agent is diethylenetriamines.
9. as claimed in claim 2 with the preparation method of the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, in step (6), described heat pressing process is first at 65 DEG C ~ 85 DEG C hot pressing 20 ~ 40min, then 120 DEG C ~ 135 DEG C hot pressing 1h; Pressure is 0.1 ~ 0.3Mpa.
10. with a preparation method for the Advanced Resin-based Composites of anti-lightning surface functional layer, it is characterized in that, gluing technology before employing matched moulds, comprises the steps:
(1) prepare functional resin: polyvinylpyrrolidonepowder powder added in liquid resin, constant temperature stirs 1 ~ 2h, then adds conductive modified particle, after constant temperature stirs 2 ~ 4h, and ultrasonic wave process 4 ~ 6h, the functional resin that must mix; Described polyvinylpyrrolidone and liquid resinous mass ratio are 1 ~ 10:1000, and described conductive modified particle and liquid resinous mass ratio are 1 ~ 10:1000;
(2) successively cut by prepreg and order is laid in mould, in hot press, carry out pre-compacted shaping, obtains the prepreg that pre-compacted is shaping;
(3) add curing agent in the functional resin prepared in step (1), the weight ratio of curing agent and described functional resin is 3 ~ 8:1000;
(4) one deck or several layers of carbon fibre fabric are covered, matched moulds in the shaping prepreg upper berth of the pre-compacted obtained in step (2), and hot-press solidifying is shaping; Described one deck or several layers of carbon fibre fabric are coated with functional resin prepared by step (3) at the front surface that paving is covered;
(5) die sinking, obtains the fiber-reinforced resin matrix compound material with anti-lightning surface functional layer.
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