CN105600770A - Preparation method and application of carbon fiber reinforced polymer-based composite material - Google Patents
Preparation method and application of carbon fiber reinforced polymer-based composite material Download PDFInfo
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- CN105600770A CN105600770A CN201610084021.5A CN201610084021A CN105600770A CN 105600770 A CN105600770 A CN 105600770A CN 201610084021 A CN201610084021 A CN 201610084021A CN 105600770 A CN105600770 A CN 105600770A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/40—Fibres
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES OR LIGHT-SENSITIVE DEVICES, OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/36—Nanostructures, e.g. nanofibres, nanotubes or fullerenes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/362—Composites
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
- H01M4/583—Carbonaceous material, e.g. graphite-intercalation compounds or CFx
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The invention discloses a preparation method and application of a carbon fiber reinforced polymer-based composite material. The preparation method comprises the following steps: putting a salt solution for an inorganic compound into a reaction kettle, and putting a base material for inducing an alternating magnetic field into the reaction kettle; sealing the reaction kettle and putting in hydrothermal induction heating equipment; cooling the reaction kettle to room temperature; taking out the base material loaded with the inorganic compound, and cleaning and drying; and finally, performing hot-press moulding to obtain the carbon fiber reinforced polymer-based composite material. In the invention, the hydrothermal induction heating technology is applied to the surface grafting of carbon fiber, and the shortcoming of difficult combination with other components caused by the surface inertia of carbon fiber is overcome. Moreover, under the effect of alternating magnetic field, the high temperature of carbon fiber promotes the growth of multiple nano materials on the surface thereof, more meshing sites are provided for the combination of carbon fiber and resin, and the interface bonding between the carbon fiber and resin as well as the mechanical properties of the composite material are improved.
Description
[technical field]
The invention belongs to the preparing technical field of composite, relate to a kind of preparation method of carbon fibre reinforced high-molecular based compositesAnd application.
[background technology]
Carbon fiber is because of its excellent combination property (high specific modulus and the ratio of strength to weight, low-thermal-expansion, high conductivity, high heat conduction, wear-resistingAnd high temperature resistant etc.) and be often used as polymer-based composite reinforcing material [Zhou Xiya compiles. composite. Beijing: chemical workIndustry publishing house, 2005.01.]. But because carbon fibre surface energy is little,, interfacial combined function poor etc. poor with the wellability of resin matrix lacksPoint, the mechanical property of composite prepared therefrom often differs large [ChoiI, LeeDG.Surface with theoretical valuemodificationofcarbonfiber/epoxycompositeswithrandomlyorientedaramidfiberfeltforadhesionstrengthenhancement.CompositesPartA:AppliedScienceandManufacturing.2013；48:1-8.]。
Therefore, suitably carbon fiber surface is processed, can be improved to a great extent the interface knot of carbon fiber and macromolecule matrixClose. Chinese scholars, for the design feature of carbon fiber surface, has proposed several different methods carbon fiber surface has been processed, and mainly can[Yang Jie, etc. carbon for Liu Baoying, Wang Xiaojun to be divided into oxidizing process, plasma processing method, coating and modified by nano particles method etc.Fiber surface modification progress [J]. chemical research, 2015,26 (2): 111-120.]. Oxidizing process mainly comprise liquid phase oxidation,Vapour phase oxidation process and electrochemical oxidation process etc., dominant mechanism is under the effect of oxidant, the exposure of carbon fiber produces manyly to be hadHydrophilicity containing oxygen polar functional group, it can occur to be combined well with macromolecule, but the intensity of carbon fiber there will be decline.The mechanism of Cement Composite Treated by Plasma is the plasma bombardment carbon fiber surface that utilizes plasma generator to produce, thereby it is sudden and violent to increase fiberThe degree of roughness of showing up and surface area, and produce containing oxygen polar functional group at fiber surface, thereby fiber and macromolecule matrix phase improvedWellability [MaK, WangB, ChenP, etal.Plasmatreatmentofcarbonfibers:Non-equilibrium mutuallydynamicadsorptionanditseffectonthemechanicalpropertiesofRTMfabricatedcomposites[J].AppliedSurfaceScience, 2011,257 (9): 3824-3830.]. Because carbon fiber surface has been subject to damage, thereby its intensity existsAlso there will be to a certain extent decline. Coating be carbon fiber surface prepare one can with carbon fiber and macromolecule generation physicsReact, and has the intermediate layer of certain thickness, structure and shear strength, and then the boundary strength of reinforced composite, commonProcessing method has coupling agent coating, sol-gal process, sizing agent coating and vapour deposition process etc., but these methods compareMore complicated.
The properties that can improve widely composite due to the introducing of nano particle (comprises tribological property and mechanical performanceDeng), nano particle has obtained field of compound material researcher's extensive concern. In field of compound material, the introducing master of nano particleWant to be divided into: mechanical blending method, fiber surface grafting and sedimentation etc. Adopt mechanical blending method and the sedimentation can only be by syntheticNano particle is incorporated in composite material by physical means, and this is easy to cause nano particle to reunite. In addition, due to boundaryThe raising of face combination is mainly to rely on nanometer size effect to realize, thereby this combination is weak. .
Therefore, find a kind of technique simple and easy to control, under the prerequisite of not damaging this body structure of carbon fiber, can also obtain the combination of excellent interface, and can realize one-step method and seem very meaningful in the preparation method of carbon fiber surface growing nano particle.
[summary of the invention]
The object of the present invention is to provide a kind of preparation method and application of carbon fibre reinforced high-molecular based composites, this methodTechnique is simple and easy to control, can a step realize the synthetic and growth of nano material on carbon fiber, and can effectively improve in compositeInterface combination between each component.
For achieving the above object, the present invention is by the following technical solutions:
A preparation method for carbon fibre reinforced high-molecular based composites, comprises the following steps:
(1) the needed salting liquid C of preparation inorganic compound, and regulate its Ph for alkalescence;
(2) solution C of step (1) is placed in reactor, and in reactor, adds long carbon fiber sheet D, by reactorSealing is placed in hydro-thermal induction heating equipment, and under the effect of induction alternating magnetic field, salting liquid C becomes inorganic compound, andLoad on long carbon fiber sheet D surface, then reactor is cooled to room temperature, have the long carbon fiber sheet of inorganic compound to get loadGo out, clean, be dried;
(3) long carbon fiber sheet D step (2) being obtained is dispersed in water, and discongests, and is evenly discongested long carbon fiber;
(4) hot pressing die is poured in evenly discongesting after long carbon fiber evenly mixes with binder additives powder of step (3) being obtained intoIn, hot pressing 1～4h under the condition that is 2～10MPa at 100～200 DEG C, hot pressing pressure, obtains having the combination of excellent interfaceChopped carbon fiber/inorganic non-metallic oxide strengthens polymer-based composite.
Preferably, described binder additives is the macromolecular material with thermosetting or thermoplasticity and heat-resisting resistance to chemical attack.
Preferably, described binder additives can be thermosetting resin, comprise unsaturated polyester (UP), epoxy resin, phenolic resins,Furane resins, polyimide resin and organic siliconresin etc.; Also can be thermoplastic resin, comprise polyolefin, polyamide, poly-Carbonic ester, polyformaldehyde, polyphenylene oxide, polyphenylene sulfide, polyether-ether-ketone.
Preferably, described binder additives realizes by the mode of spraying or suction filtration.
Preferably, described long carbon fiber sheet D obtains according to following methods: first by after long carbon fiber pretreatment, thenIt is soluble in water, by sand core funnel suction filtration device, it is carried out to suction filtration and obtain long carbon fiber filter cake, then by the mode of mold pressing,Under the pressure of 2Mpa～15Mpa, leave standstill 10min～60min, then used ethanol and deionized water clearly respectively to wash 3～6 times,And dry at 60～100 DEG C, can obtain thickness is the long carbon fiber sheet D of 0.5mm～10mm.
Preferably, the induction frequencies of described hydro-thermal eddy-current heating is 10～500KHz, in the scope that induced-current is 0～1200A.
Preferably, described inorganic compound comprises oxide, sulfide or other, and described oxide comprises metal oxide and Fei JinBelong to oxide, described metal oxide comprises cupric oxide, zinc oxide, manganese oxide, titanium oxide, aluminium oxide, molybdenum oxide, tungsten oxideOr other metal oxides, described nonmetal oxide comprises silica, calcium oxide or other inorganic non-metallic oxides; Described sulphurCompound comprises molybdenum sulfide, tungsten sulfide, vanadic sulfide, copper sulfide, iron sulfide or other sulfide, described other comprise hydroxyapatite,Phosphoric acid pick, calcium silicates or yttrium silicate.
Preferably, the packing ratio of described reactor is 40～80%.
An a kind of carbon fibre reinforced high-molecular based composites of preparing according to said method, it is applied to automobile gear shift clutchOn.
Compared with prior art, the present invention at least has following beneficial effect: the present invention will be applied in hydro-thermal induction heating techniqueCarbon fiber surface engrafted nanometer material, provides a kind of brand-new system to nano-material modified carbon fibre reinforced high-molecular based compositesPreparation Method. The method manufacturing cycle is short, technique is simple and easy to control, without subsequent treatment and environmentally friendly, thereby is easier to realize workIndustryization is produced.
[brief description of the drawings]
Fig. 1 is MnO prepared by the present invention2ESEM (SEM) photo with carbon fiber composite structure.
Fig. 2 is the SEM photo of the embodiment of the present invention 1.
Fig. 3 is the SEM photo of the embodiment of the present invention 4.
Fig. 4 is the SEM photo of the embodiment of the present invention 3.
Fig. 5 is the SEM photo of the embodiment of the present invention 2.
[detailed description of the invention]
Embodiment 1
A preparation method for carbon fibre reinforced high-molecular based composites, comprises the following steps:
Step 1: take 0.5～5gA (A can be potassium permanganate, ammonium molybdate, sodium tungstate, zinc chloride, copper chloride, titanium chloride,The salt that the synthesis of metal oxide such as aluminium chloride are required), being dissolved in 40～80mlB solvent (can be water, ethanol, propyl alcohol and second twoAlcohol etc.), being configured to molar concentration is the C solution of 0.01～5mol/L, regulates its pH value for acid;
Step 2: take out after carbon cloth is placed in to acetone soln ultrasonic cleaning 2～10h, use washed with de-ionized water post-drying. Then willThe liquor potassic permanganate that carbon cloth after oven dry is placed in 0.1～2mol/L soaks 12～36h, and (object of soaking liquor potassic permanganate is to removeThe organic matter of carbon fiber surface, certainly, also can adopt salpeter solution processing or under atmospheric condition, carry out calcination processing). ?After, the carbon cloth after immersion treatment is cleaned by deionized water, after being dried, obtain carbon cloth D; The count of described carbon cloth be 1K,3K, 6K or 12K, braiding structure is plain weave, twill, satin weave or unidirectional cloth;
Step 3: C solution is proceeded in reactor, and add step 2 carbon cloth D after treatment, sealing is placed on hydro-thermal induction and addsIn hot equipment, under the induction frequencies of 10～500KHz and the output current condition of 0～1200A, react 10min～24h, then natureCool to room temperature. Carbon cloth is taken out, use washed with de-ionized water 3～6 times, and be dried 12～24h at 60～100 DEG C, can obtain rawLength has product E, and (E is the metal oxide being synthesized by raw material A, can be cupric oxide, zinc oxide, manganese oxide, titanium oxide, oxidationThe metal oxides such as aluminium, molybdenum oxide and tungsten oxide) carbon cloth F; Hydrothermal temperature can be realized by batch (-type) eddy-current heating,The control of Hydro-thermal pressure can realize by the packing ratio of reactor (40～80%);
Step 4: take out after the binder additives solution that the carbon cloth F that step 3 is obtained is placed in 20～50wt% floods 10～60minDry. Repeated impregnations-drying operation is until the mass fraction of binder additives reaches 20～60%, described binder additives solutionHave thermosetting or thermoplasticity, and a heat-resisting resistance to chemical attack, for example resin solution, its objective is the shape that links together by carbon cloth FBecome to have the carbon cloth of some strength; Described binder additives can be thermosetting resin, comprise unsaturated polyester (UP), epoxy resin,Phenolic resins, furane resins, polyimide resin and organic siliconresin etc.; Also can be thermoplastic resin, comprise polyolefin,Polyamide, Merlon, polyformaldehyde, polyphenylene oxide, polyphenylene sulfide, polyether-ether-ketone etc.; In addition, macromolecule matrix can be also rubberGlue; The interpolation of described resin also can realize by the mode of spraying or suction filtration;
Step 5: the carbon cloth F that step 4 is obtained is hot-forming on vulcanizer, control the hot pressing temperature of vulcanizer and be 150～180 DEG C, hot pressing time is 10～20min, and hot pressing pressure is 3～8MPa, obtains having the carbon fiber increasing of excellent interface combinationStrong polymer-based composite.
Embodiment 2
Step 1: (A can be ammonium molybdate, sodium tungstate, folk prescription acid sodium, copper chloride, iron chloride by the A solution of 0.01～5mol/LDeng the required salt of synthesizing sulfide) and the B solution of 0.01～5mol/L (B can be thioacetamide, vulcanized sodium, DDTC, twoThe organic or inorganic sulphur source solution such as sodium diethyldithiocarbamate, sulfuric acid, ammonium peroxydisulfate) evenly mix, and regulate its pHValue, for acid, obtains mixed liquor C;
Step 2: the carbon nano-fiber that takes 0.1g～5g is placed in moulding press, under the pressure of 2Mpa～15Mpa, leaves standstill10min～60min, can obtain thickness is the carbon nano-fiber sheet D of 0.5mm～10mm, is then used ethanol and deionized waterClearly respectively wash 3～6 times, and dry at 60～100 DEG C;
Step 3: C solution is proceeded in reactor, and the carbon nano-fiber sheet D that adds step 2 to obtain, sealing is placed on hydro-thermalIn induction heating equipment, under the induction frequencies of 10～500KHz and the output current condition of 0～1200A, react 10min～24h, soAfter naturally cool to room temperature. Nanofiber sheet D is taken out, uses washed with de-ionized water 3～6 times, and be dried 12～24h at 60～100 DEG C,Can obtain growth has product E (E is the product generating by after A and B reaction, can be molybdenum sulfide, tungsten sulfide, vanadic sulfide, sulphurChange copper, iron sulfide sulfides) carbon nano-fiber sheet F.
Step 4: the carbon nano-fiber sheet F that step 3 is obtained pulverizes, is put in 50～500ml water, under the frequency of 10～40KHz,Ultrasonic 30min～3h is then dried and is obtained fully decentralized carbon nano-fiber under 60～100 DEG C of conditions;
Step 5: the carbon nano-fiber after 0.5～2g step 4 is disperseed evenly mixes rear with 10～20g binder additives powder FEnter in hot pressing die hot pressing 1～4h under the condition that is 2～10MPa at 100～200 DEG C, hot pressing pressure. In hot pressing, everyExit once every 10min, the gas producing in hot pressing with the macromolecule of fully draining. Thermo-compressed naturally cools to room temperature after touch,Can obtain having the collaborative polymer-based composite strengthening of nano carbon fiber/inorganic sulfide of excellent interface combination.
In embodiments of the present invention, the process of described step 4 and step 5 also can adopt the step 4 of embodiment 1 and step 5Mode is processed.
Embodiment 3
Step 1: take 0.5～5gA (A can be the required salt of synthetic non-metallic oxide such as ethyl orthosilicate, calcium carbonate),Be dissolved in (can be water, ethanol, propyl alcohol and ethylene glycol etc.) in 40～80mlB solvent, being configured to molar concentration is 0.01～5mol/LC solution, regulate its pH value for alkalescence;
Step 2: chopped carbon fiber (length 100um～800um, diameter 10～20um) is placed in to acetone soln ultrasonic cleaning 2～10hRear taking-up, uses washed with de-ionized water post-drying. Then the salpeter solution that the carbon cloth after drying is placed in to 0.1～2mol/L soaks12～36h. Finally, the chopped carbon fiber after immersion treatment is cleaned, is dried by deionized water;
Step 3: the chopped carbon fiber that takes 1g～6g step 2 is dissolved in 50～200ml water, by sand core funnel suction filtration device to itCarry out suction filtration, obtain having certain thickness chopped carbon fiber sheet D;
Step 4: C solution is proceeded in reactor, and add the chopped carbon fiber sheet D of step 3, sealing is placed on hydro-thermal inductionIn firing equipment, under the induction frequencies of 10～500KHz and the output current condition of 0～1200A, react 10min～24h, then certainlySo cool to room temperature. Chopped carbon fiber sheet D is taken out, uses washed with de-ionized water 3～6 times, and be dried 12～24h at 60～100 DEG C,Can obtain growth has product E (E is the nonmetal oxide being synthesized by A, can be the inorganic non-metallic oxygen such as silica, calcium oxideCompound) chopped carbon fiber sheet F.
Step 5: the binder additives solution that the chopped carbon fiber sheet F of step 4 is placed in to 20～50wt% floods 10～60minRear taking-up is dried. Repeated impregnations-drying operation is until the mass fraction of binder additives reaches 20～60%;
Step 6: by hot-forming on vulcanizer the chopped carbon fiber sheet F of step 5, control the hot pressing temperature of vulcanizer and be 150～180 DEG C, hot pressing time is 10～20min, and hot pressing pressure is 3～8MPa, obtains having the short carbon fibre of cutting of excellent interface combinationDimension/inorganic non-metallic oxide strengthens polymer-based composite.
In embodiments of the present invention, the process of described step 4 and step 5 also can adopt the step 4 of embodiment 2 and step 5Mode is processed.
Embodiment 4
Step 1: by the A solution of 0.01～5mol/L (A can be calcium chloride, basic zirconium chloride, calcium nitrate, yttrium nitrate etc.) andThe B solution (B can be potassium dihydrogen phosphate, phosphoric acid, ethyl orthosilicate etc.) of 0.01～5mol/L evenly mixes, and regulates its pH valueFor alkalescence, obtain mixed liquor C;
Step 2: after long carbon fiber (length is greater than 800um) is placed in to acetone soln ultrasonic cleaning 2～10h, take out, spend fromSub-water cleans post-drying. Then the long carbon fiber after drying is arranged in the salpeter solution of 0.1～2mol/L and soaks 12～36h. Finally,Long carbon fiber after immersion treatment is cleaned, is dried by deionized water;
Step 3: the long carbon fiber that takes 1g～6g step 2 is dissolved in 50～200ml water, by sand core funnel suction filtration device, it is enteredRow suction filtration obtains long carbon fiber filter cake, then by the mode of mold pressing, under the pressure of 2Mpa～15Mpa, leaves standstill 10min～60min,Then used ethanol and deionized water clearly respectively to wash 3～6 times, and dry at 60～100 DEG C, can obtain thickness is 0.5mm～10mmLong carbon fiber sheet D;
Step 4: C solution is proceeded in reactor, and add the long carbon fiber sheet D of step 3, sealing is placed on hydro-thermal induction and addsIn hot equipment, under the induction frequencies of 10～500KHz and the output current condition of 0～1200A, react 10min～24h, then natureCool to room temperature. Long carbon fiber sheet D is taken out, use washed with de-ionized water 3～6 times, and be dried 12～24h at 60～100 DEG C,Can obtain growth have product E (E is the product generating by after A and B reaction, can be hydroxyapatite, phosphoric acid pick, calcium silicates andThe long carbon fiber sheet F of yttrium silicate etc.
Step 5: the long carbon fiber sheet F of step 4, through tentatively pulverizing, is put in 100～500ml water, at 50～1000r/minSpeed conditions under, discongest after time 60～120min, under 60～100 DEG C of conditions, dry, evenly discongested long carbon fiber.
Step 6: the long carbon fiber that 0.5～2g step 5 is evenly discongested evenly mixes rear with 10～20g binder additives powder FEnter in hot pressing die hot pressing 1～4h under the condition that is 2～10MPa at 100～200 DEG C, hot pressing pressure. In hot pressing, everyExit once every 10min, the gas producing in hot pressing with the macromolecule of fully draining. Thermo-compressed naturally cools to room temperature after touch,Can obtain having the collaborative polymer-based composite strengthening of long carbon fiber/inorganic compound salt of excellent interface combination.
In embodiments of the present invention, the process of described step 4 and step 5 also can adopt the step 4 of embodiment 1 and step 5Mode is processed.
In various embodiments of the invention, the method in blocks of described carbon plate, is different for different carbon fiber materials, particularly,Be mainly the method that adopts mold pressing for carbon nano-fiber and the less fiber of chopped carbon fiber equidimension, and for long fibre be mainlyThe method that adopts suction filtration, in order to obtain the controlled carbon plate of thickness, even needs to adopt the method for suction filtration and mold pressing use.
In process in blocks, for the bond strength of improving carbon plate can add some binder additives, these additives should haveBe insoluble to the characteristic of reaction dissolvent, also will possess the feature that is easy to be removed with organic solvent after high temperature resistant and reaction.
Prepared carbon plate need to revert back pulverulence through dispersion treatment, and this dispersion can not adopt ball milling, stirs and should adoptThe method of mixing, the mode stirring by adjustment and speed, under the prerequisite of inorganic compound of not destroying carbon fiber surface growth, willIts dispersed opening.
Water in hydro-thermal induction also can change the organic solvents such as ethanol, propyl alcohol and ethylene glycol into, makes hydro-thermal reaction change into solvent heat anti-Should.
In hydro-thermal reaction system, add (the oleic acid such as the organic solvent of anion or cationic surface active agent and opposed polaritySodium, triethanolamine, octadecylene, oleic acid, oleyl amine etc.) as pattern adjusting control agent, control carbon fiber surface inorganic compound to reachThe object of structure.
In order to make inorganic compound better at carbon fiber surface nucleating growth, can carry out surface treatment to carbon fiber in advance,As surperficial carboxylated, hydroxylating etc. In order to obtain only having one side growth to have the carbon cloth of inorganic compound, two-layer carbon cloth can be carried outStack is fixing, also carbon cloth can be fixed on glass plate or ceramic wafer.
The synthetic composite of the present invention can be applied to thermal protection system, light structures part, ultracapacitor, ion secondary batteryAnd the field such as auto parts and components. Wherein related performance comprises hot property, electrical property, mechanical performance and chemical property etc.
As seen from Figure 1, the carbon fiber surface of being prepared by the inventive method finer and close nanometer MnO of one deck that evenly growing2Particle.
The invention provides a kind of carbon fibre reinforced high-molecular base that adopts the preparation of hydro-thermal induction technology to there is the combination of excellent interface compoundMaterial. By regulating its pH value to obtain C solution after A solution and the mixing of B solution, then C solution is proceeded in reactor and addedEnter carbon cloth or carbon plate, after sealing, in induction heating equipment, react, finally by reacted carbon cloth impregnating resin hot-press solidifying,Can obtain having the carbon fibre reinforced high-molecular based composites of excellent interface combination. By changing output current and packing ratio, canWith the control of realization response temperature and pressure, add the adjustment to reaction time, pH and in reaction system, introduce pattern controlPreparation, can realize the control to product E structure, and then prepares the composite with different performance. Meanwhile, logicalCross and select different reactants, can obtain the collaborative composite strengthening of different nano particle/carbon fibers.
The present invention is applied to hydro-thermal induction heating technique the surface grafting of carbon fiber, can obviously overcome the surface inertness band of carbon fiberThe difficult shortcoming combining with other components of coming. In addition,, under the effect of alternating magnetic field, the high temperature of carbon fiber can impel multipleNano material (in the growth on its surface, for carbon fiber and resin-bonded provide more meshing site, and then is improved between themInterface combination and the mechanical performance of composite. This invented technology is simple and easy to control, for nano-material modified composite provides onePlant brand-new preparation method.
Its concrete beneficial effect is as follows:
(1) carbon fiber is heated to rapidly higher temperature under the effect of alternating magnetic field, for reactant nucleation provides site alsoAccelerate the growth of crystal, thus the composite chemical composition homogeneous making, purity is higher, crystal morphology rule, and particle diameter is lessAnd be evenly distributed, interface is in conjunction with excellence;
(2) the firm growth of nano particle on carbon fiber, for the combination of carbon fiber and resin provides more meshing point, alsoImproved fault interface energy and the storage modulus of material, thereby this composite has excellent mechanical performance;
(3) the method is not almost damaged carbon fiber, because the intensity of carbon fiber can not be weakened;
(4) temperature that carbon fiber surface is higher makes synthetic nano material have higher degree of crystallinity, thereby without carrying out post processing,This has simplified whole preparation process and environmentally friendly.
Claims (9)
1. a preparation method for carbon fibre reinforced high-molecular based composites, is characterized in that: comprise the following steps:
(1) the needed salting liquid C of preparation inorganic compound, and regulate its Ph for alkalescence;
(2) solution C of step (1) is placed in reactor, and in reactor, adds long carbon fiber sheet D, reactor is sealedBe placed in hydro-thermal induction heating equipment, under the effect of induction alternating magnetic field, salting liquid C becomes inorganic compound, and loadOn long carbon fiber sheet D surface, then reactor is cooled to room temperature, there is the long carbon fiber sheet of inorganic compound to take out load,Clean, be dried;
(3) long carbon fiber sheet D step (2) being obtained is dispersed in water, and discongests, and is evenly discongested long carbon fiber;
(4) evenly discongesting after long carbon fiber evenly mixes with binder additives powder of step (3) being obtained poured in hot pressing die,Hot pressing 1～4h under the condition that is 2～10MPa at 100～200 DEG C, hot pressing pressure, obtains having the short of excellent interface combination and cutsCarbon fiber/inorganic nonmetal oxide strengthens polymer-based composite.
2. the preparation method of a kind of carbon fibre reinforced high-molecular based composites according to claim 1, is characterized in that: described inBinder additives is the macromolecular material with thermosetting or thermoplasticity and heat-resisting resistance to chemical attack.
3. the preparation method of a kind of carbon fibre reinforced high-molecular based composites according to claim 2, is characterized in that: described inBinder additives can be thermosetting resin, comprises unsaturated polyester (UP), epoxy resin, phenolic resins, furane resins, polyamides AsiaPolyimide resin and organic siliconresin etc.; Also can be thermoplastic resin, comprise polyolefin, polyamide, Merlon, polyformaldehyde,Polyphenylene oxide, polyphenylene sulfide, polyether-ether-ketone.
4. according to the preparation method of a kind of carbon fibre reinforced high-molecular based composites described in claim 2 or 3, it is characterized in that:Described binder additives realizes by the mode of spraying or suction filtration.
5. the preparation method of a kind of carbon fibre reinforced high-molecular based composites according to claim 1, is characterized in that: described inLong carbon fiber sheet D obtain according to following methods: first by after long carbon fiber pretreatment, then that it is soluble in water, logicalCross sand core funnel suction filtration device and it is carried out to suction filtration obtain long carbon fiber filter cake, then by the mode of mold pressing, at 2Mpa～15MpaPressure under, leave standstill 10min～60min, then used ethanol and deionized water clearly respectively to wash 3～6 times, and at 60～100 DEG CDry, can obtain thickness is the long carbon fiber sheet D of 0.5mm～10mm.
6. the preparation method of a kind of carbon fibre reinforced high-molecular based composites according to claim 1, is characterized in that: described inThe induction frequencies of hydro-thermal eddy-current heating is 10～500KHz, in the scope that induced-current is 0～1200A.
7. the preparation method of a kind of carbon fibre reinforced high-molecular based composites according to claim 1, is characterized in that: described inInorganic compound comprises oxide, sulfide or other, and described oxide comprises metal oxide and nonmetal oxide, described goldBelong to oxide and comprise cupric oxide, zinc oxide, manganese oxide, titanium oxide, aluminium oxide, molybdenum oxide, tungsten oxide or other metal oxides,Described nonmetal oxide comprises silica, calcium oxide or other inorganic non-metallic oxides; Described sulfide comprises molybdenum sulfide, sulphurChange tungsten, vanadic sulfide, copper sulfide, iron sulfide or other sulfide, described other comprise hydroxyapatite, phosphoric acid pick, calcium silicates orYttrium silicate.
8. the preparation method of a kind of carbon fibre reinforced high-molecular based composites according to claim 1, is characterized in that: described inThe packing ratio of reactor is 40～80%.
9. an a kind of carbon fibre reinforced high-molecular based composites of preparing according to the method described in claim 1 to 8, its applicationOn automobile gear shift clutch.
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| CN109110812A (en) * | 2018-10-29 | 2019-01-01 | 陕西科技大学 | A kind of 3D multilevel structure VS2Electrocatalytic Activity for Hydrogen Evolution Reaction agent and preparation method thereof |
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