CN107471679A - Carbon fibre composite manufacture method - Google Patents
Carbon fibre composite manufacture method Download PDFInfo
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- CN107471679A CN107471679A CN201710671319.0A CN201710671319A CN107471679A CN 107471679 A CN107471679 A CN 107471679A CN 201710671319 A CN201710671319 A CN 201710671319A CN 107471679 A CN107471679 A CN 107471679A
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- Prior art keywords
- carbon fibre
- mould
- setting agent
- preform
- resin
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Classifications
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- 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
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- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
-
- 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
-
- 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
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0811—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using induction
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- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14237—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity
- B29C2045/14245—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure the inserts being deformed or preformed outside the mould or mould cavity using deforming or preforming means outside the mould cavity
Abstract
A kind of carbon fibre composite manufacture method, comprises the following steps:Setting agent is discharged on carbon fibre fabric, doped with can electromagnetic induction nano-particle in setting agent;Setting agent and carbon fibre fabric is heated up by Electromagnetic Heating mode, and setting agent is mutually bonded with carbon fibre fabric;Bonding setting agent and carbon fibre fabric are cut and lamination operation, preheated using Electromagnetic Heating mode, places into pressed sizing operation is carried out in preforming tool, obtains preform;Preform is put into progress matched moulds pressurized operation in mould, preform and mould are warming up to by default injection temperature by Electromagnetic Heating mode;Resin is injected in mould, preform and mould are warming up to by default solidification temperature by Electromagnetic Heating mode;The demoulding obtains carbon fibre composite after curing molding cooling, enables to heat temperature raising speed, product manufacture efficiency is high, and energy consumption and manufacturing cost are relatively low.
Description
Technical field
The present invention relates to a kind of field of material technology, more particularly to a kind of carbon fibre composite manufacture method.
Background technology
High-performance carbon fibre composite has that specific strength, specific modulus are high, the excellent combination property such as corrosion-resistant, extensively
Applied to fields such as Aero-Space, naval vessel, weapons and sports goods.Carbon fibre composite is gradually contour by Aero-Space at present
Market is held gradually to develop to industrial circles such as wind-powered electricity generation, automobiles.Particularly in automotive field, with energy-conserving and environment-protective requirement increasingly
Height, the requirement of automotive light weight technology extend to the fields such as general-utility car and motorbus from racing car, and oil can be reduced by reducing vehicle weight
Consumption, discharge amount of exhaust gas is reduced, for new-energy automobile, distance travelled can be effectively improved.Automobile lightweight, mainly most
Main measure is exactly largely using lightweighting materials such as high-performance carbon fibre composites.Carbon fibre composite replaces steel
Material, 40%~60% weight loss effect, benefit highly significant can be achieved.
Currently, main carbon fibre composite manufacturer of the world has using carbon fibre composite automobile lightweight
Plan.Conventional composite materials are using vacuum importing, autoclave, molding or traditional RTM (Resin transfer molding, tree
Fat transmits contour forming) shaping, several hours easily in curing molding cycle, it is difficult to meet industrial circle mass production requirement.Closely
Nian Lai, it is adapted to HP-RTM (high pressure Resin transfer molding, high-pressure resin transmit contour forming) technique of rapid shaping
Succeeded in developing in succession with the epoxy-resin systems with rapid curing function, resin system most fast hardening time is only 60s.But
The molding cycle of composite is not only relevant with resin curing time, additionally depends on the cooperation between each link in technical process.
Due to composite material process planning and product quality requirement, need to hold in high-performance composite materials article manufacturing process
Continuous repetition heating and temperature-fall period.The conventional mode of heating of conventional composite materials mould mainly have electrothermal tube, oil temperature or
The modes such as baking oven heating, it is molded after mould heating by heat transfer to material solidification in die cavity.
Traditional heating mode is primarily present problems with:Heat temperature raising speed is slow, causes composite molding cycle longer;
The efficiency of heating surface is low, high energy consumption, causes composite manufacturing cost high.
The content of the invention
Based on this, it is necessary to a kind of heat temperature raising speed is provided, and the efficiency of heating surface is higher, the relatively low carbon of energy consumption is fine
Tie up method for composite material.
A kind of carbon fibre composite manufacture method, comprises the following steps:
Setting agent is discharged on carbon fibre fabric, wherein, doped with can electromagnetic induction nano-particle in the setting agent;
The setting agent and the carbon fibre fabric is heated up by Electromagnetic Heating mode, and make the setting agent and described
Carbon fibre fabric is mutually bonded;
By the bonding setting agent and the carbon fibre fabric is cut and lamination operation, using Electromagnetic Heating side
Formula is preheated, and is placed into progress pressed sizing operation in preforming tool, is obtained preform;
The preform is put into progress matched moulds pressurized operation in the forming cavity of mould, by Electromagnetic Heating side
The preform and the mould are warming up to default injection temperature by formula;
The gum-injecting port of resin from the mould is injected in the forming cavity of the mould, passes through Electromagnetic Heating
The preform and the mould are warming up to default solidification temperature by mode, and heat-insulation pressure keeping carries out curing operation;
After carrying out cooling down operation, carbon fibre composite is obtained.
In one of the embodiments, it is described can electromagnetic induction nano-particle be ferrite, iron-nickel alloy, FeAlSi powder and
At least one of carboxyl iron powder.
In one of the embodiments, the carbon fibre fabric is one-way fabric, plain cloth, twills, satin weave volume
At least one of weave cotton cloth with polyaxial braid.
In one of the embodiments, the dispensing mode of the setting agent is coating, sprays liquid or dusting.
In one of the embodiments, the heating frequency of the Electromagnetic Heating mode is 50Hz~15MHz.
In one of the embodiments, in the resin polyurethane resin, epoxy resin and caprolactam resin at least
It is a kind of.
In one of the embodiments, releasing agent is also contained in the resin.
In one of the embodiments, the injection flow of the resin is 0.1L/min~6L/min.
In one of the embodiments, injection operation is carried out to the resin using HP-RTM injectors.
In one of the embodiments, it is described can the particle diameter of electromagnetic induction nano-particle be 20nm~500nm.
The mode of heating of each link of above-mentioned carbon fibre composite manufacture method uses Electromagnetic Heating mode, has and rises
Warm speed is fast, uniformity is good, efficiency high, low power consumption and other advantages.And adulterate, it is described can the setting agent of electromagnetic induction nano-particle exist
Carbon fibre fabric is internally formed magnetic conduction or conductive path, carbon fibre fabric can be directly heated by electromagnetic induction effect, further
The efficiency of heating surface and uniformity are improved, can effectively shorten composite molding cycle, reduces manufacturing cost.In addition, doping is described
Can electromagnetic induction nano-particle be dispersed in composite resin matrix, the toughness of composite can be improved, especially
It is applied to the high-performance composite materials fast and low-cost mass production requirement of HP-RTM techniques.
Brief description of the drawings
Fig. 1 is the flow chart of the carbon fibre composite manufacture method of an embodiment of the present invention;
Fig. 2 is the release process chart of the setting agent of an embodiment of the present invention;
Fig. 3 is the process chart of the preform of an embodiment of the present invention;
Fig. 4 is the structural representation of the mould of an embodiment of the present invention;
Fig. 5 is the flow chart of the carbon fibre composite manufacture method of an embodiment of the present invention.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, below in conjunction with the accompanying drawings to the present invention
Embodiment be described in detail.Many details are elaborated in the following description in order to fully understand this hair
It is bright.But the invention can be embodied in many other ways as described herein, those skilled in the art can be not
Similar improvement is done in the case of running counter to intension of the present invention, therefore the present invention is not limited to the specific embodiments disclosed below.
For example, the carbon fibre composite manufacture method of an embodiment comprises the following steps:Setting agent is discharged in carbon
On fabric, wherein, doped with can electromagnetic induction nano-particle in the setting agent;It is described fixed to be made by Electromagnetic Heating mode
Type agent and carbon fibre fabric heating, and the setting agent is mutually bonded with the carbon fibre fabric;Described in bonding
The setting agent and carbon fibre fabric is cut and lamination operation, is preheated using Electromagnetic Heating mode, is placed into pre-
Pressed sizing operation is carried out in mould, obtains preform;The preform is put into the forming cavity of mould
Interior progress matched moulds pressurized operation, default injection is warming up to by Electromagnetic Heating mode by the preform and the mould
Temperature;The gum-injecting port of resin from the mould is injected in the forming cavity of the mould, by Electromagnetic Heating side
The preform and the mould are warming up to default solidification temperature by formula, and heat-insulation pressure keeping carries out curing operation;Carry out cold
But after operating, carbon fibre composite is obtained.
Referring to Fig. 1, the above-mentioned carbon fibre composite manufacture method of an embodiment comprises the following steps:
S110:Setting agent is discharged on carbon fibre fabric, wherein, doped with can electromagnetic induction nanometer in the setting agent
Particle.
Referring to Fig. 2, by the way that the setting agent is directly discharged on carbon fibre fabric, that is adulterated in the setting agent can
In the presence of electromagnetic wave electromagnetic induction effect occurs for electromagnetic induction nano-particle, you can electromagnetic induction nano-particle can be in electricity
Generated heat in the presence of magnetic wave.
In one embodiment, it is described can electromagnetic induction nano-particle be magnetic conduction or conducting nanoparticles, it is described can electromagnetism sense
Answer at least one of nano-particle ferrite, iron-nickel alloy, FeAlSi powder and carboxyl iron powder, it is above-mentioned can electromagnetic induction nanoparticle
In the active force of electromagnetic wave electromagnetic induction effect can occur for son, and then generate heat;And for example, the carbon fibre fabric is unidirectionally to knit
At least one of thing, plain cloth, twills, satin weave cloth and polyaxial braid, so, above-mentioned carbon fibre fabric
As the integrally-built support frame of composite, the effect for strengthening overall structure mechanical strength can be played;And for example, it is described fixed
The dispensing mode of type agent is coating, sprays liquid or dusting;And for example, it is described can electromagnetic induction nano-particle particle diameter for 20nm~
500nm, in such manner, it is possible to so that it is described can electromagnetic induction nano-particle spread more evenly across on the setting agent, in electromagnetism plus
When hot, heating is more uniform, and temperature control is also more accurate;And for example, the setting agent be nylon, polyether-ether-ketone, polyphenylene sulfide,
At least one of epoxy resin, phenolic aldehyde, polyimides and bismaleimide resin, in such manner, it is possible to which so that the carbon fibre fabric is more preferable
Realize fixed effect in ground.
S120:The setting agent and the carbon fibre fabric is heated up by Electromagnetic Heating mode, and make the setting agent
Mutually it is bonded with the carbon fibre fabric.
Due in the setting agent doped with can electromagnetic induction nano-particle, it is described can electromagnetic induction nano-particle can
Generated heat in the presence of electromagnetic wave, and then the setting agent heated, herein it is emphasized that due to it is described can electromagnetism
Sensing nano-particle is dispersed in the setting agent, and its heating effect to the setting agent is uniform and in all directions
Ground, i.e., described setting agent overall structure are all heating simultaneously, relative to traditional oils heat, electrothermal tube heating or baking oven heating etc. by outer
To interior mode of heating, the heating effect of the step S120 is more preferable, and faster, heat temperature raising speed faster, heats the efficiency of heating surface
Cycle is shorter, is advantageous to shorten the cycle of composite entirety manufacturing process.
It should be noted that making the setting agent and the carbon fibre fabric heat up by Electromagnetic Heating mode, and make institute
State setting agent to be mutually bonded with the carbon fibre fabric, but be necessary to ensure that the setting agent is not immersed to the carbon fibre fabric,
According to traditional heating mode, then the effect above relatively difficult to achieve, and the step S120 is only used, it is described fixed to realize
The thermaltransmission mode from inside to outside of type agent, it can ensure that the setting agent is not immersed to the carbon fibre fabric.
S130:By the bonding setting agent and the carbon fibre fabric is cut and lamination operation, using electromagnetism
Mode of heating is preheated, and is placed into progress pressed sizing operation in preforming tool, is obtained preform.
Referring to Fig. 3, in step s 130, the setting agent and the carbon fibre fabric bond together, similar
In sheet or platy structure, at this time, it may be necessary to the bonding setting agent and the carbon fibre fabric be cut, to meet
Default forming requirements, can preferably be put into the preforming tool, and then by the bonding institute of the multi-disc cut
State setting agent and the carbon fibre fabric carries out stacking laying, and then by setting agent described in the multi-disc being laminated and the carbon
Fabric is put into pressed sizing is carried out in preforming tool, to obtain preform.
S140:The preform is put into progress matched moulds pressurized operation in the forming cavity of mould, passes through electromagnetism
The preform and the mould are warming up to default injection temperature by mode of heating.
, it is necessary to which preform is put into progress matched moulds pressurization behaviour in the forming cavity of mould after preform to be obtained
Make, carry out secondary sizing, referring to Fig. 4, again Electromagnetic Heating mode the preform and the mould are warming up to it is pre-
If injection temperature, for example, the mould is metal die or the carbon fibre composite containing electromagnetic induction nano-particle
In mould, so, by launching electromagnetic wave to the preform and the mould, enable to the preform and
The mould heats simultaneously, quickly achieves default injection temperature, adds relative to traditional oils heat, electrothermal tube heating or baking oven
The mode of heating from outside to inside such as heat, the heating effect of the step S140 is more preferable, and the efficiency of heating surface is higher, and heat temperature raising speed is more
It hurry up, heating cycle is shorter, is advantageous to shorten the cycle of composite entirety manufacturing process.
S150:The gum-injecting port of resin from the mould is injected in the forming cavity of the mould, passes through electricity
The preform and the mould are warming up to default solidification temperature by magnetic mode of heating, and heat-insulation pressure keeping carries out solidification behaviour
Make.
Because the preform and the mould will be warming up to by step S140 by Electromagnetic Heating mode
Default injection temperature, now, then the gum-injecting port of mould described in resin is injected in the forming cavity of the mould, energy
The injection efficiency of the resin is enough improved, i.e., can improve the mobility of resin, the shaping is filled up preferably to complete injection
The operation of the forming cavity of mould, now, the resin can be adhered to be wrapped in and be placed in the forming cavity of the mould
Outside preform, and then the preform and the mould be warming up to by default solidification by Electromagnetic Heating mode
Temperature, heat reactive resin is enabled to realize curing operation, now, the resin and the preform complete preliminary solidification
Forming operation, resin and the preform can be preferably combined together.The preform is as carbon fiber composite
Expect integrally-built support frame.
In one embodiment, at least one of the resin polyurethane resin, epoxy resin and caprolactam resin;Again
Such as, the resin is fast-curing resin system, and the fast-curing resin system is polyurethane, epoxy resin or caprolactam
System, so, solidification effect faster, can shorten the cycle of composite entirety manufacturing process;And for example, also contain in the resin
There is releasing agent, in such manner, it is possible to beneficial to follow-up stripping operation;And for example, the injection flow of the resin is 0.1L/min~6L/
min;And for example, injection operation is carried out to the resin using HP-RTM injectors, in such manner, it is possible to injection efficiency is improved, Neng Gouli
In follow-up stripping operation.
S160:After carrying out cooling down operation, carbon fibre composite is obtained.
After the resin solidification, cooling down operation is carried out, the carbon fibre composite is obtained after the demoulding.
In one embodiment, the heating frequency of the Electromagnetic Heating mode is 50Hz~15MHz, be so, it is possible so that adding
The thermal efficiency is higher, and faster, heating cycle is shorter for heat temperature raising speed, is advantageous to shorten the week of composite entirety manufacturing process
Phase.
The mode of heating of each link of above-mentioned carbon fibre composite HP-RTM manufacture methods uses Electromagnetic Heating mode,
With programming rate is fast, uniformity is good, efficiency high, low power consumption and other advantages.And adulterate, it is described can electromagnetic induction nano-particle determine
Type agent is internally formed magnetic conduction or conductive path in carbon fibre fabric, can directly heat carbon fibre fabric by electromagnetic induction effect,
The efficiency of heating surface and uniformity are further improved, can effectively shorten composite molding cycle, reduces manufacturing cost.In addition, doping
It is described can electromagnetic induction nano-particle be dispersed in composite resin matrix, the shock resistance that can improve composite is tough
Property, the high-performance composite materials fast and low-cost mass production requirement for the HP-RTM techniques that are particularly suitable for use in.
In one embodiment, referring to Fig. 5, a kind of carbon fibre composite HP-RTM quick molding methods of the present invention,
Comprise the following steps:1st, setting agent discharges:Setting agent doped with magnetic conduction or conducting nanoparticles is passed through into powder coating equipment
Discharge on carbon fibre fabric, setting agent and carbon fibre fabric is heated up by electromagnetic induction effect, it is ensured that setting agent and fiber
Fabric good bonding, but do not immerse fabric.2nd, the preparation of preform:Carbon fibre fabric containing setting agent is cut out on request
Cut, preheated after lamination using electromagnetic induction heating, be put into after carrying out pressed sizing in preforming tool and take out preform.
3rd, mould and preform preheating:Matched moulds pressurization after preform is put into mould, by electromagnetic induction by mould and
Preform is warming up to the injection temperature of setting.4th, resin injection curing molding:Using HP-RTM injectors by rapid curing tree
Resin system injects mold cavity from mould gum-injecting port, is heated to solidification temperature after the completion of injecting glue, and heat-insulation pressure keeping is to having solidified
Entirely.5th, cooling and demolding:Mold after cooling, ejected product by mold releasability ejecting mechanism, and mold cleaning is clean;It is described
Magnetic conduction or conducting nanoparticles are the one or more in the powder body materials such as ferrite, iron-nickel alloy, FeAlSi powder, carboxyl iron powder
Combination.A diameter of 20~500nm of the magnetic conduction or conducting nanoparticles.The carbon fibre fabric is one-way fabric, plain weave is knitted
One or more combinations in thing, twills, satin weave cloth or multi-axial fabric.The dispensing mode of the setting agent is painting
Cover, liquid/solvent sprays and dusting.The electromagnetic induction heating frequency is 50Hz~15MHz.The mould is metal
Mould or carbon fibre composite mould.The pressuring method pressurizes for hydraulic press.The resin system is polyurethane, asphalt mixtures modified by epoxy resin
Fat or caprolactam resin system.The resin system contains inner pattern releasing agent applicable.The resin injection flow is 0.1~6L/min.Institute
The injection pressure for stating resin is 5~200bar.The curing molding temperature is 80~260 DEG C.The solidified forming time is 40
~300s.Beneficial effects of the present invention are:The mode of heating of each link of HP-RTM moulding process is Electromagnetic Heating, has heating
Speed is fast, uniformity is good, efficiency high, low power consumption and other advantages.And the setting agent of doping magnetic conduction or conducting nanoparticles is knitted in fiber
Thing is internally formed magnetic conduction or conductive path, can directly heat carbon fibre fabric by electromagnetic induction effect, further improves heating
Efficiency and uniformity.Composite molding cycle can effectively be shortened using the inventive method, reduce manufacturing cost.In addition, doping
Nano-particle be dispersed in composite resin matrix, the toughness of composite can be improved.Using the present invention
The high-performance composite materials fast and low-cost mass production requirement of HP-RTM techniques can be met.
Continue with and provide specific embodiment to help to understand present inventive concept.
Embodiment 1
Referring to Fig. 2, nanometer ferrite powder is equably entrained in epoxide resin type setting agent Araldite LT3366
In, setting agent is discharged after uniaxially weaving carbon fiber by powder coating equipment, it is fine by electromagnetic induction effect carbon
It is attached in dimensional fabric and setting agent powder after nanometer ferrite heating-up section fusing setting agent on fabric, passes through electromagnetism sense
Should can accurately, equal control temperature, ensure the adhesion effect of setting agent and carbon fibre fabric, agent content of being shaped in carbon fibre fabric
For 6%.
Referring to Fig. 3, cutting fabric on request, it is overlapped by 0 °/45 °/90 °/- 45 °, using electromagnetic induction effect pair
After the carbon fibre fabric of superposition is preheated, pressurization sizing, prepares preform after moving into preforming tool.
Referring to Fig. 4, by after preform trimming, die sinking is moved into mould, is pressurizeed, passed through using hydraulic press matched moulds
Electromagnetic Heating is heated up, and the preform in mould is preheated into 90 DEG C, will be quick using the luxuriant and rich with fragrance HP-RTM injectors of Crouse's agate
Cured epoxy resin system injection die cavity dipping preform, it is 3L/min to enter flow adhesive, injection pressure 120bar, it is complete to enter glue
Cheng Hou, glue-feeder is closed, mold temperature is risen to 120 DEG C, after heat-insulation pressure keeping curing molding 1min, cooling die sinking pickup.
Embodiment 2
, will be fixed by powder coating equipment by FeAlSi powders Uniform Doped that particle diameter is 100nm into nylon setting agent
Type agent is discharged after polyaxial carbon fibre fabric, passes through nanometer in electromagnetic induction effect carbon fibre fabric and setting agent powder
It is attached on after the fusing of FeAlSi heating-up sections on carbon fibre fabric, the sizing agent content in carbon fibre fabric is 4%.
The fabric of cutting is overlapped by the ply sequence of design, the fabric of superposition carried out using electromagnetic induction effect
Preheating, pressurization sizing, prepares preform after being put into preforming tool.
After preform is carried out into trimming by mould size, die sinking is moved into mould, utilizes hydraulic press matched moulds
Pressurization, is heated up by Electromagnetic Heating, the preform in mould is heated into 160 DEG C, using HP-RTM injectors by acyl in oneself
Polyimide resin system injects die cavity, and injection flow is 5L/min, injection pressure 130bar.Rear enclosed glue-feeder is completed in injection, is protected
After warm pressurize curing molding 2min, cooling die sinking pickup.
Embodiment 3
By particle diameter be 200nm carboxyl iron powder Uniform Doped into phenolic resin setting agent, by coating apparatus will shape
Agent is discharged after carbon fiber twills and one-way fabric, using electromagnetic induction effect so that carbon fibre fabric and setting agent powder
It is attached on after interior nanometer carboxylic iron powder heating-up section fusing on carbon fibre fabric, agent content of being shaped in carbon fibre fabric is 5%.
The fabric of cutting is overlapped by the ply sequence of design, outside lays carbon fiber twills as outward appearance
Face, the fabric of superposition is preheated using electromagnetic induction effect, pressurization sizing, is prepared preforming after being put into preforming tool
Body.
After preform is carried out into trimming by mould size, die sinking is moved into mould, utilizes hydraulic press matched moulds
Pressurization, is heated up by Electromagnetic Heating, the preform in mould is heated into 120 DEG C, using HP-RTM injectors by polyurethane
In resin system (isocyanates and polyalcohol) injection die cavity, injection flow is 1.5L/min, injection pressure 120bar.Injection
Rear enclosed glue-feeder is completed, after heat-insulation pressure keeping curing molding 4min, cooling die sinking pickup.
Table 1 is the comparison sheet of several traditional heating modes and electromagnetic induction heating heating rate and required heating power, can
See and heated using the heating rate of electromagnetic induction heating far above traditional oil temperature, electrothermal tube and baking oven, and required heating work(
Rate is smaller.It can be seen that using electromagnetic induction heating HP-RTM moulding process efficiency can be greatly improved, reduce energy consumption and moulding process into
This, lifts HP-RTM moulding process competitiveness.
Table 1
Mode of heating | Oil temperature heats | Electrothermal tube heats | Baking oven heats | Electromagnetic induction heating |
Heating rate | 0.3~0.5 DEG C/sec | 0.4~0.6 DEG C/sec | 0.2~0.3 DEG C/sec | 20~40 DEG C/sec |
Heating power | 2KW | 1.5KW | 2KW | 0.8KW |
Table 2 is traditional forming composite and uses the Main Mechanical of particle composite material containing magnetic conduction produced by the present invention
Comparison sheet.It can be seen that the mechanical property of particle composite material containing magnetic conduction produced by the present invention has different degrees of raising, particularly rush
Hit intensity improves 31.2%, because magnetic conduction particle plays toughening effect in resin matrix, improves resin matrix
Energy and the interface performance between resin and carbon fiber.
Table 2
Composite type | Tensile strength/MPa | Interlaminar shear strength/MPa | Impact strength/KJ.m-2 |
Traditional forming composite | 862 | 51.4 | 109 |
Particle composite material containing magnetic conduction | 875 | 56.3 | 143 |
Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention
Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (10)
1. a kind of carbon fibre composite manufacture method, it is characterised in that comprise the following steps:
Setting agent is discharged on carbon fibre fabric, wherein, doped with can electromagnetic induction nano-particle in the setting agent;
The setting agent and the carbon fibre fabric is heated up by Electromagnetic Heating mode, and make the setting agent and the carbon fine
Dimensional fabric is mutually bonded;
By the bonding setting agent and the carbon fibre fabric is cut and lamination operation, is entered using Electromagnetic Heating mode
Row preheating, place into progress pressed sizing operation in preforming tool, obtain preform;
The preform is put into progress matched moulds pressurized operation in the forming cavity of mould, will by Electromagnetic Heating mode
The preform and the mould are warming up to default injection temperature;
The gum-injecting port of resin from the mould is injected in the forming cavity of the mould, passes through Electromagnetic Heating mode
The preform and the mould are warming up to default solidification temperature, heat-insulation pressure keeping carries out curing operation;
After carrying out cooling down operation, carbon fibre composite is obtained.
2. carbon fibre composite manufacture method according to claim 1, it is characterised in that it is described can electromagnetic induction nanometer
Particle is at least one of ferrite, iron-nickel alloy, FeAlSi powder and carboxyl iron powder.
3. carbon fibre composite manufacture method according to claim 1, it is characterised in that the carbon fibre fabric is single
To at least one of fabric, plain cloth, twills, satin weave cloth and polyaxial braid.
4. carbon fibre composite manufacture method according to claim 1, it is characterised in that the release side of the setting agent
Formula is coating, sprays liquid or dusting.
5. carbon fibre composite manufacture method according to claim 1, it is characterised in that the Electromagnetic Heating mode
Heating frequency is 50Hz~15MHz.
6. carbon fibre composite manufacture method according to claim 1, it is characterised in that the resin polyurethane tree
At least one of fat, epoxy resin and caprolactam resin.
7. carbon fibre composite manufacture method according to claim 1, it is characterised in that also containing de- in the resin
Mould agent.
8. carbon fibre composite manufacture method according to claim 1, it is characterised in that the injection flow of the resin
For 0.1L/min~6L/min.
9. carbon fibre composite manufacture method according to claim 1, it is characterised in that using HP-RTM injectors pair
The resin carries out injection operation.
10. carbon fibre composite manufacture method according to claim 1, it is characterised in that it is described can electromagnetic induction receive
The particle diameter of rice corpuscles is 20nm~500nm.
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