CN104761869B - Preoxidized fiber felt/epoxy resin composite material product and preparation method thereof - Google Patents
Preoxidized fiber felt/epoxy resin composite material product and preparation method thereof Download PDFInfo
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- CN104761869B CN104761869B CN201510147842.4A CN201510147842A CN104761869B CN 104761869 B CN104761869 B CN 104761869B CN 201510147842 A CN201510147842 A CN 201510147842A CN 104761869 B CN104761869 B CN 104761869B
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- 239000000835 fiber Substances 0.000 title claims abstract description 103
- 239000002131 composite material Substances 0.000 title claims abstract description 92
- 239000003822 epoxy resin Substances 0.000 title claims abstract description 54
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 15
- 238000000748 compression moulding Methods 0.000 claims abstract description 15
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 10
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- 238000003756 stirring Methods 0.000 claims abstract 3
- 238000007254 oxidation reaction Methods 0.000 claims description 71
- 239000000047 product Substances 0.000 claims description 22
- 239000004593 Epoxy Substances 0.000 claims description 11
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- 239000000523 sample Substances 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims description 9
- 230000008023 solidification Effects 0.000 claims description 9
- 238000000465 moulding Methods 0.000 claims description 8
- 229960004756 ethanol Drugs 0.000 claims description 6
- 229920002292 Nylon 6 Polymers 0.000 claims description 5
- 238000007598 dipping method Methods 0.000 claims description 5
- 239000004567 concrete Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000012467 final product Substances 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims 1
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 8
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Abstract
The invention provides a preoxidized fiber felt/epoxy resin composite material product using preoxidized fiber felt as a reinforcing body and an epoxy resin as a matrix. The preparation method comprises the following steps: (1) preparation of epoxy resin matrix: weighing a certain amount of epoxy resin, adding anhydrous ethanol for dilution, sufficiently dissolving by stirring with an electric mixer for 10-30 minutes, adding a curing agent, and uniformly mixing by sufficient stirring; (2) pretreatment of preoxidized fiber felt: putting a preoxidized fiber felt nonwoven fabric into a 2-5% ethanol solution, carrying out immersion washing for 10 minutes, and drying the test sample in a drying oven at 60-80 DEG C for 30-60 minutes; and (3) compression molding of composite material: sufficiently soaking the preoxidized fiber felt in the prepared epoxy resin matrix at room temperature by hand pasting, and carrying out compression molding on the composite material by using a flat open mold. By using the lower-price preoxidized fiber felt instead of higher-price carbon fiber felt, the product has favorable mechanical properties, and the preparation method has the advantages of simple technique and lower cost and is easy to operate.
Description
Technical field
The present invention relates to mechanics protection composite product, more particularly to one kind is with oxidization fiber felt as reinforcement, asphalt mixtures modified by epoxy resin
Based on fat, the felt of the oxidization fiber with excellent mechanical performances/epoxy resin composite material product and preparation method thereof.
Background technology
Composite (Composite materials), refers to by the different material of two or more property such as
Metal, ceramics and macromolecular material etc., the heterogeneous material prepared by the preparation technology such as physically or chemically.Composition composite wood
The various materials of material are complementary in performance and feature, learn from other's strong points to offset one's weaknesses, and produce cooperative effect, and this allows for the comprehensive of composite
Its former composition material can be better than, so as to a variety of demands in meeting daily life, commercial production.Composite has weight
Gently, the features such as intensity height, machine-shaping convenience, excellent spring, resistance to chemical attack and good weatherability, timber and gold have progressively been replaced
Category alloy, is widely used in the field such as Aero-Space, automobile, electric, building, body-building apparatus, obtains being even more in recent years
Develop rapidly.Composite is applied to aviation field and automobile industry mainly as mechanics protective article at present.With economy
Development, composite will substitute most traditional material as mechanics protective article and be applied to more fields.It is compound
The depth of investigation of material and using range and its speed and scale of production development, it has also become weigh a national science technology elder generation
Enter one of horizontal important symbol.From in terms of global range, the production of world's composite is concentrated mainly on America and Europe and East Asia Region.
Inland of China market also rapidly grew up in recent years.In the composite, using fiber as the materials application of reinforcement most
For extensive, the composite feature of this type is specific strength and specific modulus is big, light weight.Model's carbon of advanced composite material (ACM) is fine
The latest developments of dimension/epoxy resin-base composite material are rapid, but because carbon fiber price is higher, industrialized production enjoys restriction.
Oxidization fiber felt is through felt made by acupuncture or other techniques by polyacrylonitrile-radical oxidization fiber chopped fiber.Pre- oxygen
Silk felt is the intermediate products of carbon fiber felt making link, and its price is lower than carbon fiber felt but many excellent with carbon fiber felt
Point --- oxidization fiber felt has the excellent performances such as good effect of heat insulation, acid-alkali-corrosive-resisting, chemically-resistant environment, against weather.
Meanwhile, oxidization fiber felt has good space effect, permeability, extensibility, it is easy to compression molding.
The content of the invention
Present invention solves the technical problem that being to provide one kind with oxidization fiber felt as reinforcement, based on epoxy resin, have
Oxidization fiber felt/epoxy resin composite material the product of excellent mechanical performances.The relatively low oxidization fiber felt of this technology price is replaced simultaneously
The higher carbon fiber felt of cost lattice, solves exemplary complex material carbon fiber/epoxy resin based composites because of carbon fiber price
Higher and industrialized production is for restricted problem.
The present invention is multiple in order to the provided technical scheme that solves the above problems is to provide a kind of oxidization fiber felt/epoxy resin
Composite product, including：As the epoxy resin of matrix, as the oxidization fiber felt of reinforcement, and firming agent；Epoxy resin Jing
Epoxy resin-base is prepared after dehydrated alcohol dilution with firming agent mixing, epoxy resin-base passes through compression molding with oxidization fiber felt
Obtain final product the composite products.
Preferably, the oxidization fiber felt non-woven fabrics are cut into the sample of 20 × 9mm, the consumption of corresponding epoxy resin is
30-100g。
Preferably, the epoxy resin and the mass ratio of firming agent are 2:1.
Preferably, the firming agent is polyamide 6 50 or polyamide 6 51.
Preferably, in the epoxy resin dehydrated alcohol of its quality 15-30% is added to be diluted which.
Preferably, pretreatment has been carried out to the oxidization fiber felt also before stamping, specially：By oxidization fiber felt non-woven fabrics
Dipping washing 10min in the ethanol solution that concentration is 2-5% is put into, 60-80 DEG C of drying 30-60min in baking oven is then placed in.
Preferably, compression molding is carried out to the composite using flat board open type mould, concrete steps include：
A. zero-pressure 60-80 DEG C is incubated precuring 1-2h；
B.80-90 DEG C, pressure 5MPa compactings 30-60min, timing release；
C. 130 DEG C are warmed up to, co-pressed 30min；
D. pressurize is cooled to room temperature；
DEG C e.120-140 solidification 2-3h, stripping forming.
The present invention also provides the preparation method of above-mentioned oxidization fiber felt/epoxy resin composite material product, comprises the steps：
(1) preparation of epoxy resin-base：
A certain amount of epoxy resin is weighed, and is added dehydrated alcohol to be diluted, then 10- is stirred with electric blender
30min, allows its sufficient dissolving, is eventually adding firming agent, and is thoroughly mixed uniform；
(2) pretreatment of oxidization fiber felt：
Oxidization fiber felt non-woven fabrics are put into into dipping washing 10min in the ethanol solution that concentration is 2-5%, then sample is put
Enter 60-80 DEG C of drying 30-60min in baking oven；
(3) compression molding of composite：
Oxidization fiber felt is allowed fully to soak using hand molding at ambient temperature step (1) deployed epoxy resin-base
Profit, then carries out compression molding to composite with flat board open type mould.
Technical solution of the present invention is summarized as follows：
Using epoxy resin as the matrix of the composite；As epoxy resin possesses certain mobility, solidification is added
Agent makes epoxy resin cure, the excessive loss of resin matrix when preventing from being molded；As epoxy resin possesses certain viscosity, in ring
Add dehydrated alcohol to be diluted in oxygen tree fat, be easy to allow resin fully to infiltrate using hand molding；It is multiple as this using oxidization fiber felt
The reinforcement of condensation material mechanical property, its consumption determine the mechanical property of the composite；Oxidization fiber felt non-woven fabrics are put into into one
Washing is impregnated in determining the ethanol solution of concentration carries out pretreatment, and preprocessing process is lost in eliminating most of fiber felt course of processing
Oil stain, fiber felt surface and the internal impurity for staying.Above-mentioned deployed epoxy resin solution is pasted using handss at ambient temperature
Method allows resin fully to infiltrate, and is subsequently adding flat board open type mould, compressing with the above-mentioned oxidization fiber felt through pretreatment to be
Obtain composite of the present invention.
Beneficial effect：
Used as composite material reinforcement body, oxidization fiber felt has good the oxidization fiber felt obtained by the use of needling process of the invention
Space effect, permeability, extensibility, it is easy to compression molding.Using these features of oxidization fiber felt, using answering for simple low cost
The condensation material method of forming, handss paste soaking method by oxidization fiber felt and resin compounded, finally using flat board open type mould to composite
Suppressed.Compared with prior art, product mechanical property of the present invention is good, preparation method process is simple, easily operated, cost
It is relatively low.
Description of the drawings
The preparation flow figure of Fig. 1 composites of the present invention；
The model structure schematic diagram of Fig. 2 composites of the present invention；
The electron microscope (scanning multiple is 280 times) of the not pretreated composite longitudinal stretching fracture apperances of Fig. 3；
The electron microscope (scanning multiple is 140 times) of the pretreated composite longitudinal stretching fracture apperances of Fig. 4；
The electron microscope (scanning multiple is 600 times) of the pretreated composite longitudinal stretching fracture apperances of Fig. 5；
Impact of Fig. 6 pretreatment to composite longitudinal stretching strength；
Impact of Fig. 7 pretreatment to composite cross directional stretch strength；
Impact of Fig. 8 pretreatment to composite tensile strength；
Impact of Fig. 9 pretreatment to composite buckling strength；
Impact of Figure 10 pretreatment to composite transverse curvature strength；
Impact of Figure 11 pretreatment to composite bending strength；
Figure 12 difference impacts of the mould pressing process to composite longitudinal stretching strength；
Figure 13 difference impacts of the mould pressing process to composite cross directional stretch strength；
Figure 14 difference impacts of the mould pressing process to composite tensile strength；
Figure 15 difference impacts of the mould pressing process to composite buckling strength；
Figure 16 difference impacts of the mould pressing process to composite transverse curvature strength；
Figure 17 difference impacts of the mould pressing process to composite bending strength.
Specific embodiment
Below by specific embodiment, and accompanying drawing is combined, be further discussed below the present invention.Unless stated otherwise, implement
In mode, techniques not described means can be being realized with mode known in those skilled in the art.In addition, embodiment should
It is interpreted as illustrative, and unrestricted the scope of the present invention, the spirit and scope of the invention are limited only by the claims that follow.It is right
For those skilled in the art, on the premise of without departing substantially from spirit and scope of the present invention, to the material in these embodiments
Various modifications that composition, consumption, size, shape are carried out, replacement, improvement fall within protection scope of the present invention, and the present invention
The design parameter for being limited should have admissible range of error.
Embodiment 1：Prepare oxidization fiber felt/epoxy resin composite material product
As a kind of example of specific embodiment, there is provided a kind of oxidization fiber felt/epoxy resin composite material product, bag
Include：As the epoxy resin of matrices of composite material, as the oxidization fiber felt of Compound Material Engineering reinforcement, and firming agent；Institute
The preparation method for stating composite products is as follows：
(1) preparation of epoxy resin-base：
E-44 type epoxy resin 60g are weighed, is added 10g dehydrated alcohol to be diluted, is then stirred with electric blender
30min, allows its sufficient dissolving, is eventually adding 50 firming agent 30g of polyamide 6, and is thoroughly mixed uniform；
(2) pretreatment of oxidization fiber felt：
Oxidization fiber felt non-woven fabrics are cut into into the sample of 20 × 9mm, dipping washing in the ethanol solution that concentration is 2% is put into
Then sample is put into 80 DEG C of drying 60min in baking oven by 10min；
(3) compression molding of composite：
Oxidization fiber felt is allowed fully to soak using hand molding at ambient temperature step (1) deployed epoxy resin-base
Profit, then carries out compression molding to composite with flat board open type mould, and concrete steps include：
A. 80 DEG C of zero-pressure is incubated precuring 2h；
B.90 DEG C, pressure 5MPa compactings 60min, timing release；
C. 130 DEG C are warmed up to, co-pressed 30min；
D. pressurize is cooled to room temperature；
DEG C e.140 solidification 3h, stripping forming.
The present embodiment is suppressed to composite using Y/TD71-45A type flat board open type moulds.Using needling process
Used as composite material reinforcement body, oxidization fiber felt has good space effect, permeability, extensibility to the oxidization fiber felt for obtaining, easily
In compression molding.Using these features of oxidization fiber felt, using the Molding Forming of Composites method of simple low cost, handss paste infiltration
Oxidization fiber felt and resin matrix are combined by method, due to dilution after E-44 types epoxy resin flows very well, so being molded it
Before to solidify at a certain temperature a period of time, prevent be molded when resin matrix excessive loss.Composite of the present invention
Preparation flow is as shown in Figure 1.
Embodiment 2：Impact of the pretreatment oxidization fiber felt to composite products mechanical property
Reinforcement in oxidization fiber felt/epoxy resin composite material belongs to cellulosic fibre material, and epoxy resin belongs to
There is very big difference in macromolecular material, their mechanical property and chemical property.The mechanical property of composite is depended not only on
The performance of reinforcement fiber, additionally depends on the combination situation between reinforcement and matrix.In order to further probe into oxidization fiber felt/ring
Combination situation between the reinforcement and matrix of epoxy resin composite material, have taken the composite stretching prepared under different condition
The SEM image of fracture, as in Figure 3-5.
It is obvious that not pretreated oxidization fiber felt/epoxy resin composite material incision position has many from Fig. 3
Exposed oxidization fiber fiber, fiber are very uneven with resin distribution, and have the phenomenon that fiber bunchy unites, resin in fracture local
There is lamination between matrix and fiber.The main cause of sample fracture is probably that reinforcement fiber is not evenly distributed in tree
In aliphatic radical body, could not well and resin base carries out surface bonding.The Impact direction of most of fiber and the draw direction of sheet material
It is not parallel, so stress concentration is easily caused in stress, localized crackses are produced, the destruction of whole sheet material is ultimately resulted in.
From fig. 4, it can be seen that the fiber for still having some exposed in incision position, its distribution arrangement and plate stretch rift direction
Unanimously, i.e., parallel to Nomex lapping direction.In sheet material stress, fiber Impact direction is substantially consistent with plate stretch direction,
It is possible to the load of most of resin transmission is born, with preferable mechanical property.Fig. 5 is the scanning of said sample stretching fracture
600 times of image is amplified to by 140 times, the fiber of can be clearly seen that few fibers broken end, peeling off from resin, fiber with
The hole stayed during resin unsticking.Furthermore it is also possible to being clearly visible resin has obvious tension shape, resin surface is smooth,
Hold lamellar and be coated on oxidization fiber fiber peripheral, this explanation resin matrix during stretching has been also subjected to part tension,
Sheet material is final to there is fracture because of most fiber and resin unsticking.
Composite products that are not preprocessed to oxidization fiber felt and preparing after pretreatment carry out respectively longitudinal stretching,
The multinomial Mechanics Performance Testing such as cross directional stretch, bending, Contrast on effect as shown in Fig. 6 to Figure 11, pretreated oxidization fiber felt/ring
Epoxy resin composite material, either tensile property or bending property all increase.Because through the oxidization fiber felt of pretreatment
Preferably can be bonded together with resin matrix.By comparing oxidization fiber felt weight change before and after treatment, draw pre-
The impurities removing efficiency of processing procedure fiber felt is tested the oxidization fiber felt surface for using and is not enough cleaned 0.3% or so, and felt body contains more
The distinguishable impurity of naked eyes.The oil stain left in the washing of dehydrated alcohol eliminates most of fiber felt course of processing, fiber
Felt surface and internal impurity are also significantly reduced.In addition, through 80 DEG C, after the baking oven forced air drying of 30min, eliminating felt body residual
Moisture, fiber felt becomes fluffy, soft, and felt body space becomes big, and integral thickness increased, and this allows for fine in handss paste infiltration
The infiltration that is more prone to of resin portion to felt body in during dimension felt, infiltration more fully, increased resin matrix and oxidization fiber felt
Contact so that the composite property after solidification is improved.
Embodiment 3：Impact of the mould pressing process to composite products mechanical property
Die press technology for forming has a significant impact to the performance of composite.Same reinforcement and matrix, by different moulds
The composite property that pressure technique is prepared is different.During molding, topmost influence factor includes：It is molding pressure, solid
Change temperature, hardening time, holding temperature and time etc..In the present embodiment, using flat board open type mould, and adopt respectively
Oxidization fiber felt/epoxy resin composite material is prepared with three kinds of different mould pressing process.
Mould pressing process one：
A. 60 DEG C of zero-pressure is incubated precuring 1h；
B.70 DEG C, pressure 5MPa compactings 10min, timing release；
C. 115 DEG C are warmed up to, pressure 5MPa compacting 2min are warmed up to 130 DEG C of compacting 10min；
D. pressurize is cooled to room temperature；
DEG C e.140 solidification 2h, stripping forming.
Mould pressing process two：
A. 60 DEG C of zero-pressure is incubated precuring 1h；
B.90 DEG C, pressure 5MPa compactings 60min, timing release；
C. 130 DEG C are warmed up to, co-pressed 30min；
D. pressurize is cooled to room temperature；
DEG C e.140 solidification 2h, stripping forming.
Mould pressing process three：
A. 60 DEG C of zero-pressure is incubated precuring 1h；
B.80 DEG C, pressure 5MPa compactings 30min, timing release；
C. 120 DEG C are warmed up to, pressure 5MPa compacting 2h；
D. 150 DEG C are warmed up to, pressure 5MPa compacting 30min；
E. pressurize is cooled to room temperature, stripping forming.
The composite wood prepared by the mechanical property for testing product prepared by above-mentioned three kinds of mould pressing methods, different mould pressing process
The tensile property and bending property of material is as shown in Figure 12-17.
From Figure 12-17 as can be seen that the composite for either being prepared using which kind of mould pressing process, its longitudinal stretching and vertical
Will be more much better than cross directional stretch and transverse curvature performance to bending property.It is along acupuncture that this is primarily due to longitudinal stretching
The lapping direction of oxidization fiber felt, cross directional stretch along carrying out perpendicular to Nomex lapping direction, the longitudinal direction drawing of oxidization fiber felt
Stretch intensity bigger than transverse tensile strength, so the mechanical property of resulting oxidization fiber felt/epoxy resin composite material longitudinal direction
Also it is better than horizontal mechanical property.In addition, from the graph, it is apparent that the composite of the preparation of technique two is either longitudinal
Or laterally, its mechanical property is all best, and reason is probably to carry out composite compacting using technique two to make epoxy
Resin matrix and oxidization fiber felt preferably infiltrate, and the degree of resin impregnated fiber felt is than technique one and technique three-hypers.Technique one
Compare with technique two, clamp time is too short, resin infiltration is insufficient, so strength is far away from composite prepared by technique two.
Comparatively speaking, the press time of technique three is longer than technique one, so the combination property of its composite is better than technique one.
But technique three does not carry out solidify afterwards, the state of cure of material is not high, and the adhesion strength between resin and fiber is not as good as technique
Two, so mechanical property is slightly poorer to technique two.
Claims (9)
1. a kind of oxidization fiber felt/epoxy resin composite material product, consisting of：As the epoxy resin of matrix, as enhancing
The oxidization fiber felt of body, and firming agent；Epoxy resin prepares epoxy resin-base with firming agent mixing Jing after dehydrated alcohol dilution,
Epoxy resin-base obtains final product the composite products by compression molding with oxidization fiber felt；
Compression molding is carried out to the composite using flat board open type mould, concrete steps include：
A. zero-pressure 60-80 DEG C is incubated precuring 1-2h；
B.80-90 DEG C, pressure 5MPa compactings 30-60min, timing release；
C. 130 DEG C are warmed up to, co-pressed 30min；
D. pressurize is cooled to room temperature；
DEG C e.120-140 solidification 2-3h, stripping forming.
2. a kind of oxidization fiber felt/epoxy resin composite material product as claimed in claim 1, it is characterised in that the epoxy
Resin is 2 with the mass ratio of firming agent:1.
3. a kind of oxidization fiber felt/epoxy resin composite material product as claimed in claim 2, it is characterised in that the solidification
Agent is polyamide 6 50 or polyamide 6 51.
4. a kind of oxidization fiber felt/epoxy resin composite material product as claimed in claim 1, it is characterised in that will be described pre-
Oxygen silk felt non-woven fabrics are cut into the sample of 20 × 9mm, and the consumption of corresponding epoxy resin is 30-100g.
5. a kind of oxidization fiber felt/epoxy resin composite material product as claimed in claim 1, it is characterised in that in the ring
The dehydrated alcohol of its quality 15-30% is added to be diluted which in oxygen tree fat.
6. a kind of oxidization fiber felt/epoxy resin composite material product as claimed in claim 1, it is characterised in that in molding
It is front that pretreatment has been carried out to the oxidization fiber felt also, specially：Oxidization fiber felt non-woven fabrics are put into into the ethanol that concentration is 2-5% molten
Dipping washing 10min in liquid, is then placed in 60-80 DEG C of drying 30-60min in baking oven.
7. a kind of preparation method of oxidization fiber felt/epoxy resin composite material, it is characterised in that comprise the steps：
(1) preparation of epoxy resin-base：
A certain amount of epoxy resin is weighed, is added the dehydrated alcohol of its quality 15-30% to be diluted, is then used electric blender
Stirring 10-30min, allows its sufficient dissolving, is eventually adding firming agent, and is thoroughly mixed uniform；
(2) pretreatment of oxidization fiber felt：
Oxidization fiber felt non-woven fabrics are put into into dipping washing 10min in the ethanol solution that concentration is 2-5%, sample is put into into baking then
60-80 DEG C of drying 30-60min in case；
(3) compression molding of composite：
Oxidization fiber felt is allowed fully to infiltrate using hand molding at ambient temperature step (1) deployed epoxy resin-base, so
Compression molding is carried out to composite with flat board open type mould afterwards, concrete steps include：
A. zero-pressure 60-80 DEG C is incubated precuring 1-2h；
B.80-90 DEG C, pressure 5MPa compactings 30-60min, timing release；
C. 130 DEG C are warmed up to, co-pressed 30min；
D. pressurize is cooled to room temperature；
DEG C e.120-140 solidification 2-3h, stripping forming.
8. a kind of preparation method of oxidization fiber felt/epoxy resin composite material as claimed in claim 7, it is characterised in that step
Suddenly epoxy resin described in (1) and the mass ratio of firming agent are 2:1.
9. as claimed in claim 7 or 8 a kind of preparation method of oxidization fiber felt/epoxy resin composite material, it is characterised in that
The content of epoxy resin is 30-100g, and the correspondence oxidization fiber felt non-woven fabrics size is 20 × 9mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147842.4A CN104761869B (en) | 2015-03-31 | 2015-03-31 | Preoxidized fiber felt/epoxy resin composite material product and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147842.4A CN104761869B (en) | 2015-03-31 | 2015-03-31 | Preoxidized fiber felt/epoxy resin composite material product and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104761869A CN104761869A (en) | 2015-07-08 |
| CN104761869B true CN104761869B (en) | 2017-05-03 |
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| CN113897013B (en) * | 2020-07-06 | 2023-03-21 | 合肥杰事杰新材料股份有限公司 | Acrylic felt filled epoxy resin composite material and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1919916A (en) * | 2006-07-03 | 2007-02-28 | 中山大学 | Composite material, preparation method thereof and application in fuel cell double polar plate |
| CN101591868A (en) * | 2009-06-23 | 2009-12-02 | 东华大学 | Be used for the preparation of the carbon fiber paper of gas diffusion layer of proton exchange membrane fuel cell |
| CN102507614A (en) * | 2011-10-25 | 2012-06-20 | 中国科学院化学研究所 | Method for characterizing element distribution conditions on fiber cross section |
| CN103640319A (en) * | 2013-11-25 | 2014-03-19 | 宜兴市飞舟高新科技材料有限公司 | Making method for carbon fiber composite board preform |
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| JPS54158498A (en) * | 1978-06-05 | 1979-12-14 | Mitsubishi Gas Chem Co Inc | Curable resin composition |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1919916A (en) * | 2006-07-03 | 2007-02-28 | 中山大学 | Composite material, preparation method thereof and application in fuel cell double polar plate |
| CN101591868A (en) * | 2009-06-23 | 2009-12-02 | 东华大学 | Be used for the preparation of the carbon fiber paper of gas diffusion layer of proton exchange membrane fuel cell |
| CN102507614A (en) * | 2011-10-25 | 2012-06-20 | 中国科学院化学研究所 | Method for characterizing element distribution conditions on fiber cross section |
| CN103640319A (en) * | 2013-11-25 | 2014-03-19 | 宜兴市飞舟高新科技材料有限公司 | Making method for carbon fiber composite board preform |
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