CN109940945A - A kind of carbon fibre composite - Google Patents
A kind of carbon fibre composite Download PDFInfo
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- CN109940945A CN109940945A CN201910341509.5A CN201910341509A CN109940945A CN 109940945 A CN109940945 A CN 109940945A CN 201910341509 A CN201910341509 A CN 201910341509A CN 109940945 A CN109940945 A CN 109940945A
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- carbon fiber
- fibre composite
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- carbon fibre
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Abstract
The invention belongs to field of compound material, and it discloses a kind of carbon fibre composite, the carbon fibre composite is the integral structure formed by the mixture of chopped carbon fiber and organic material, and the density of the carbon fibre composite is 50~1000kg/m3, the weight ratio of chopped carbon fiber and organic material is 95~99.5:0.5~5.The material has excellent sound isolating and flame-retardant heat insulation, while available drilling punching installation, fixed, pollution-free.
Description
Technical field
The present invention relates to field of compound material, specially a kind of carbon fibre composite.
Background technique
With the development and energy-saving and environment-friendly demand of aircraft, rail traffic, novel ship and new-energy automobile, to traffic work
More stringent requirements are proposed for the lightweight for having (automobile, aircraft, rail locomotive and pleasure boat) and comfort, increasingly attention traffic work
NVH (noise, vibration and sound vibration roughness) problem of tool.There is statistics to show, vehicle there are about 1/3 failure problems is and vehicle
NVH problem have a relationship, and each major company has nearly 20% R & D Cost consumption to handle in the NVH for solving the problems, such as vehicle, NVH
It is bad, directly affect the experience of passenger.
Currently, the Normal practice for improving vehicles NVH performance is to be laid with mineral wool in interior interlayer skeleton, use
In sound absorption, damping, heat-insulated.Due to containing asbestos in the ingredient of mineral wool, asbestos fibre is easy in sucking human body and is deposited on lung
Portion causes pulmonary disease.The water-resistance of mineral wool is bad simultaneously, and vapor can be adsorbed after long-time service, greatly reduces mineral
Sound absorption, damping noise reduction and the heat preservation and insulation of cotton material.Therefore, find it is a kind of environmental protection without asbestos, while have superior acoustic,
The new material of damping noise reduction and heat-insulating and cold becomes the emphasis of people's research.
Carbon material Co., Ltd of making innovations, Changshu City proposes a solution, specifically: Chinese patent application
A kind of preparation method of carbon fiber sound-absorbing cold-proof heat insulation cotton of CN201810067434.1 is recorded in embodiment: first by polypropylene
The surface of nitrile fiber is surface-treated through water-repellent paint, the carbon fiber of oxygen index (OI) 45% is prepared, by percentage to the quality carbon fiber
Dimension is 90%, low melting point polyester fiber 10%, and carbon fiber and low melting point polyester fiber are heat-treated after combing,
Heat treatment temperature is 50 DEG C, is combined as a whole by non-woven mode, and it is 13kg/m that density, which is prepared,3Carbon fiber composite
The bed of material.It records its advantages part: carbon fiber sound-absorbing cold-proof heat insulation cotton, absorbing carbon fiber obtained is produced by non-woven mode
Sound cold-proof heat insulation minuteness degree is low, and thermal coefficient is low, and heat-insulation and heat-preservation is good, and sound insulating and absorbing performance is good, non-ignitable in open fire not melt, nothing
Dropping, smokeless poisonous gas generates, while also having the characteristics that waterproof.
Since it is low density material, it is fluffy material, is similar to mineral wool (density 10-48Kg/m3), it protects
Temperature, soundproof effect are naturally good, but the problem of can not be ignored is: overleaf adhesive coating is needed in practical application so that cotton with
Body framing fitting, the bad adhesive of adhesion property is easy degumming, while glue easily penetrates into cotton, later period replacement maintenance
When, phenomena such as being also easy to produce degumming, residue glue.Meanwhile there is also environmental issues for adhesive.
And from the point of view of present technology development, using carbon fiber and polyester material production fire prevention, sound insulation, thermal insulation material
There is this paths.
Because using organic material and carbon fiber preparation heat preservation, fire prevention, heat-barrier material from referring now to conflict
, i.e., if organic material is more, prevent fires, smog, sound insulation, heat preservation it is then impacted；It, can only be by fluffy if organic material is few
The structure of pine realizes the purpose of fire prevention, sound insulation, heat preservation, and any attempts the organic material and carbon fibre material system of low ratio
The standby trial for becoming the material with greater density is all failure.
So above-mentioned contradiction is exactly the basis and starting point that this programme proposes.And this programme solve this it is contradictory directly
The purpose of industrial application is, under the premise of the advantages of retaining low-density composite, improves density, realization can punch peace
Dress.
Summary of the invention
The purpose of the present invention is to provide a kind of carbon fibre composite, which has the excellent heat-insulated effect of sound isolating and flame-retardant
Fruit, while available drilling punching installation, it is fixed, it is pollution-free.Meanwhile the invention also discloses the optional manufacturers of the material
Method.
To achieve the above object, the invention provides the following technical scheme: a kind of carbon fibre composite, the carbon fiber
Composite material is the integral structure formed by the mixture of chopped carbon fiber and organic material, the carbon fibre composite
Density be 50~1000kg/m3, the weight ratio of chopped carbon fiber and organic material is 95~99.5:0.5~5.
Preferably, the density of the carbon fibre composite is 50-350kg/m3。
In above-mentioned carbon fibre composite, the fusing point of the organic material is 80-110 DEG C.
It should be understood that being still also feasible, such as general using dystectic organic fiber during the test
The series of nylon 6 Fypro, fusing point is up to 200 DEG C or more, if dystectic organic material is used, for pre-
Hot temperature, hot pressing temperature will be adjusted correspondingly.
The present invention selects the starting point of the organic material of low melting point to be that it is possible to prepare height by low melting point organic material
Density material need not just use dystectic organic material.
But the present invention does not repel dystectic organic material outside protection scope of the present invention, of the invention has
The main still selection based on production cost, technology difficulty of the selection of the fusing point of machine material.
Similarly, it is 80 DEG C of organic materials below that the present invention, which also can choose fusing point, and only melting temperature is too low, then exists
Temperature control, the performance of material in the case of a high temperature might have slight deterioration in process.
In above-mentioned carbon fibre composite, the organic material is polyamide.
In the present invention, low melting point organic material is preferably LMPA low melting point nylon, and LMPA low melting point nylon is a large amount of
It is had been reported that in document, such as CN103525357, the nylon fusing point of preparation is between 120-135 DEG C；Cavus etc. (Cavus, S,
GurkaynakMA.Influenceofmonofunctionalreactantsonthephysicalpropertiesofdimer
Acid-basedpolyamindes[J] .polymersforAdvancedTechnologies, 2006,17 (1): 30-36 preparation
Fusing point be 102.4 DEG C of low melting point nylon etc..
And in the present invention, the selection of organic material is not limited only to polyamide, using polyester resin etc.
It is still and feasible.
In above-mentioned carbon fibre composite, the diameter of the chopped carbon fiber is 5~8 μm, density is 1.76~
1.80g/cm3。
In above-mentioned carbon fibre composite, the length of the chopped carbon fiber is 2-10cm；Preferably 3-7cm.
In above-mentioned carbon fibre composite, carbon fibre composite is prepared by the following method to obtain: by chopped carbon
It is hot-forming after fiber and organic material mixing；The hot-forming hot pressing temperature in the process is equal to or more than organic material
The fusing point of material is molded plate spacing during hot-forming and is adjusted according to the density of carbon fibre composite.
In above-mentioned carbon fibre composite, the method includes the following steps:
Step 1: carbon fiber and organic material being mixed, mixture is obtained；
Step 2: mixture is preheated；
Step 3: the mixture after preheating being carried out hot-forming.
In above-mentioned carbon fibre composite, the step 1 specifically:
Step S11: by the carbon fiber of certain proportion filiform and Filamentous organic fiber by mixing, arranging and pass through cutting
Mechanism is cut into the chopped carbon fiber and chopped organic fiber of preset length；
Step S12: the chopped carbon fiber and chopped organic fiber form hybrid yams and successively superposition formation with one
Determine the sandwich of thickness.
Carbon fiber and organic fiber as described herein mix, the purpose of arrangement is that carbon fiber and organic fiber is enable to cut
Uniform mixed distribution in the process, this is a kind of effective corrective measure for realizing the composite material of high-quality.Be chopped organic fiber
Diameter and length it is preferably consistent with the specification of chopped carbon fiber, certainly chopped organic fiber can also be thinner than chopped carbon fiber
Or it is thicker, preferably thinner, such chopped carbon fiber and chopped organic fiber can mix more uniformly.
In above-mentioned carbon fibre composite, in the step S11, transmission is arranged in the lower section of the cutting mechanism
Band；The chopped carbon fiber to be formed is cut by cutting mechanism and chopped organic fiber is fallen on a moving belt and successively superposition is formed
Sandwich.
Being formed for sandwich can be formed by the fiber filament on the vibration sieve apparatus of peripheral hardware collection conveyer belt, can also be made
Conveyer belt moves back and forth in a small range to be overlapped carbon fiber wire to form sandwich.
In above-mentioned carbon fibre composite, in the step 2, the preheating temperature of warm-up operation is lower than organic material
20-30 DEG C of fusing point, preheating time 1-10min.
In above-mentioned carbon fibre composite, in the step 3, molding temperature is higher than the melting temperature of organic material
10-20 DEG C, clamp time 1-10min, preferably 1-3min.
The purpose of warm-up operation of the invention is to reduce sandwich and hot pressing temperature as far as possible before entering moulding press
The gap of degree, such hot pressing effect can be more preferable.So preheating time and preheating temperature can carry out flexible modulation, as long as can use up
Possible reduction and the molding temperature difference.
It should be understood that molding temperature is slightly above melting temperature, the purpose is to make carbon for enabling organic fiber to melt
It can combine closely between fiber.
In above-mentioned carbon fibre composite, in the step 3, hot-forming step is implemented using moulding press, institute
The mixture stated thickness and moulded board setting spacing ratio according to the density of product depending on, according to reduction formula density=
How long mostly weight/volume three is closely bound up, plates of the thickness and weight of sandwich depending on needing to do the more thickness of width, and more thickness
Plate will receive the effect of distance between moulded board again, and thickness will affect volume size again, to influence whether density again.Using
Be that reverse method determines the gravimetric thickness of sandwich and the spacing of moulded board.
Compared with prior art, the beneficial effects of the present invention are:
Product of the invention is since more than chopped carbon fiber content and density is big, sound isolating and flame-retardant heat insulation is very
It is good, and as composite material, carbon fiber is short, during punching, it is not easy to lead to the problem of drill bit wrapping, and its
Stabilized structure, stability in use is good after mounting.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of process equipment embodiment of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Process equipment embodiment
The process equipment that the present embodiment mainly illustrates for realizing the object of the invention, subsequent embodiment describe specifically multiple again
Condensation material.
Process equipment of the invention is following (refering to fig. 1):
A kind of process equipment of carbon fibre composite, including the conveyer belt 1, preheating mechanism 2, moulding press 3 being sequentially arranged；
The cutting mechanism 4 for carbon fiber wire A and organic fiber silk B to be cut into preset length is equipped with above the conveyer belt 1.
The cutting mechanism 4 includes traction pressure roller 41 and cutting roller 42 positioned opposite, and the preheating mechanism 2 is pre-
Hot drying tunnel.
In order to guarantee that carbon fiber wire A and organic fiber silk B can have the position of enough tractive force arrival traction pressure rollers 41,
A pair of of pressure roller can also be set before drawing pressure roller 41, the pressure roller is by motor driven, by carbon fiber wire A and organic fiber silk
B is output to the position of traction pressure roller 41 by this pair of of pressure roller, is cut the fiber filament for drawing 41 surface of pressure roller by cutting roller 42
Upper molded plate 31 and lower moulded board 32 are provided on disconnected moulding press 3, the density of composite material passes through upper molded plate 31 and lower molding
Spacing between plate 32 is adjusted, such as if wanting the density of composite material more greatly, upper molded plate 31 and lower die
Spacing between pressing plate 32 just should be a little bit smaller, this is operation customary in the art, no longer excessively illustrates this present embodiment.
Embodiment 1
A kind of carbon fibre composite
Its raw material material parameter are as follows: gross mass percentage shared by carbon fiber is 95%, organic fiber 5%, carbon fiber
Quality is 261.25g, and organic fiber quality is 13.75g, and wherein the diameter of carbon fiber selects 8 μm, density 1.8g/cm3, have
Machine fiber be LMPA polyamide material, 100 DEG C of fusing point；
Production technology:
This technique is processed using the process equipment of carbon fibre composite as described above.
Step 1: carbon fiber and organic material being mixed, mixture is obtained；
Step 1 specifically includes following sub-step:
Step S11: by the carbon fiber of certain proportion filiform and Filamentous organic fiber by mixing, arranging and pass through cutting
Mechanism is cut into the chopped carbon fiber and chopped organic fiber of preset length；Adjusting yarn cutting rate is 5Hz, and the yarn cutting time is
1min；Yarn cutting length are as follows: 3cm.
Step S12: the chopped carbon fiber and chopped organic fiber form hybrid yams and successively superposition formation with one
Determine the sandwich of thickness；After cutting mechanism carries out yarn cutting processing, measuring laminate thickness is 2cm, gross mass 280g；
Step 2: the communicated band of mixture being introduced into preheating drying tunnel and is preheated；Drying tunnel set temperature is 80 DEG C；
Step 3: the mixture progress after preheating is hot-forming, and compression molding temperature is 120 DEG C, and molding spacing is adjusted to
0.5cm, clamp time 1min.
Product parameters: composite material specification after molding is 1000mm × 1000mm × 5mm, density 55kg/m3。
Embodiment 2
A kind of carbon fibre composite
Its raw material material parameter are as follows: gross mass percentage shared by carbon fiber is 99.5%, organic fiber 0.5%, carbon
Fiber quality is 9360g, and organic fiber quality is 46.8g, and wherein the diameter of carbon fiber selects 5 μm, density 1.76g/cm3,
Organic fiber be LMPA polyamide material, 100 DEG C of fusing point；
Production technology:
Step 1: carbon fiber and organic material being mixed, mixture is obtained；
Step 1 specifically includes following sub-step:
Step S11: it is cut by Filamentous carbon fiber and Filamentous organic fiber by mixing, arrangement and by cutting mechanism
Chopped carbon fiber and chopped organic fiber as preset length；Adjusting yarn cutting rate is 24Hz, and the yarn cutting time is 2.5min；It cuts
Yarn length are as follows: 6.5cm.
Step S12: the chopped carbon fiber and chopped organic fiber form hybrid yams and successively superposition formation with one
Determine the sandwich of thickness；After cutting mechanism carries out yarn cutting processing, measuring laminate thickness is 4cm, gross mass 7600g；
Step 2: the communicated band of mixture being introduced into preheating drying tunnel and is preheated；Drying tunnel set temperature is 80 DEG C；
Step 3: the mixture progress after preheating is hot-forming, and compression molding temperature is 120 DEG C, and molding spacing is adjusted to
3cm, clamp time 3min.
Product parameters: composite material specification after molding is 1000mm × 1000mm × 30mm, density 312kg/m3。
Embodiment 3
A kind of carbon fibre composite
Its raw material material parameter are as follows: gross mass percentage shared by carbon fiber is 97%, organic fiber 3%, carbon fiber
Quality is 3376g, and organic fiber quality is 105g, and wherein the diameter of carbon fiber selects 7 μm, density 1.78g/cm3, organic fibre
Tieing up is LMPA polyamide material, 100 DEG C of fusing point；
Production technology:
Step 1: carbon fiber and organic material being mixed, mixture is obtained；
Step 1 specifically includes following sub-step:
Step S11: it is cut by Filamentous carbon fiber and Filamentous organic fiber by mixing, arrangement and by cutting mechanism
Chopped carbon fiber and chopped organic fiber as preset length；Adjusting yarn cutting rate is 16Hz, and the yarn cutting time is 2min；Yarn cutting
Length are as follows: 4cm.
Step S12: the chopped carbon fiber and chopped organic fiber form hybrid yams and successively superposition formation with one
Determine the sandwich of thickness；After cutting mechanism carries out yarn cutting processing, measuring laminate thickness is 2.8cm, and gross mass is
2880g；
Step 2: the communicated band of mixture being introduced into preheating drying tunnel and is preheated；Drying tunnel set temperature is 80 DEG C；
Step 3: the mixture progress after preheating is hot-forming, and compression molding temperature is 120 DEG C, and molding spacing is adjusted to
2cm, clamp time 2.5min.
Product parameters: composite material specification after molding is 1000mm × 1000mm × 20mm, density 174kg/m3。
Comparative example one
With reference to the patent application CN108486767A of published application, first by the surface of polyacrylonitrile fibre through water-repellent paint table
The carbon fiber of oxygen index (OI) 45% is prepared in surface treatment, and carbon fiber is 90% by percentage to the quality, and low melting point polyester fiber is
10%, carbon fiber and low melting point polyester fiber are heat-treated after combing, heat treatment temperature is 50 DEG C, is knitted by non-
The mode of making is combined as a whole, and it is 13kg/m that density, which is prepared,3Carbon fibre composite layer.
Performance comparison is carried out with embodiment one, two, three and comparative example one, test item and test method and result are shown in
Following table:
By above-mentioned test data, we are available such as draws a conclusion:
Product of the invention is since more than chopped carbon fiber content and density is big, sound isolating and flame-retardant heat insulation is very
It is good, and as composite material, carbon fiber is short, during punching, it is not easy to lead to the problem of drill bit wrapping, and its
Stabilized structure, stability in use is good after mounting.
In the preparation process of product of the invention, uniformly mixed chopped carbon fiber and organic material are subjected to hot pressing, heat
It presses temperature to be higher than the fusing point of organic matter, mixing material can be effectively prepared into firm, uniform solid, remained
In the case where the various advantages of carbon fiber, the purpose of the product being prepared by this method punched is realized, examination is passed through
Verifying is real, and the product structure that this method is prepared is also very firm.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
Claims (5)
1. a kind of carbon fibre composite, which is characterized in that the carbon fibre composite is by chopped carbon fiber and organic
The integral structure that the mixture of material is formed, the density of the carbon fibre composite are 50~1000kg/m3, be chopped carbon
The weight ratio of fiber and organic material is 95~99.5:0.5~5.
2. carbon fibre composite according to claim 1, which is characterized in that the fusing point of the organic material is 80-
110℃。
3. carbon fibre composite according to claim 2, which is characterized in that the organic material is polyamide resin
Rouge.
4. carbon fibre composite according to claim 1, which is characterized in that the diameter of the chopped carbon fiber is 5
~8 μm, density is 1.76~1.80g/cm3。
5. carbon fibre composite according to claim 4, which is characterized in that the length of the chopped carbon fiber is 2-
10cm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910341509.5A CN109940945A (en) | 2019-04-26 | 2019-04-26 | A kind of carbon fibre composite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910341509.5A CN109940945A (en) | 2019-04-26 | 2019-04-26 | A kind of carbon fibre composite |
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| Publication Number | Publication Date |
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| CN109940945A true CN109940945A (en) | 2019-06-28 |
Family
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098561A (en) * | 2019-11-29 | 2020-05-05 | 广东航科新材料有限公司 | Carbon fiber composite material and preparation method thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401022A (en) * | 2000-11-24 | 2003-03-05 | 东邦泰纳克丝株式会社 | Carbon fiber sheet and method for producing the same |
| CN1744974A (en) * | 2002-12-03 | 2006-03-08 | 尤卡碳工业有限公司 | Carbon/carbon composites by hot pressing |
| CN101160425A (en) * | 2004-12-28 | 2008-04-09 | 欧文科宁知识产权资产有限公司 | Polymer/wucs mat for use in automotive applications |
-
2019
- 2019-04-26 CN CN201910341509.5A patent/CN109940945A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1401022A (en) * | 2000-11-24 | 2003-03-05 | 东邦泰纳克丝株式会社 | Carbon fiber sheet and method for producing the same |
| CN1744974A (en) * | 2002-12-03 | 2006-03-08 | 尤卡碳工业有限公司 | Carbon/carbon composites by hot pressing |
| CN101160425A (en) * | 2004-12-28 | 2008-04-09 | 欧文科宁知识产权资产有限公司 | Polymer/wucs mat for use in automotive applications |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111098561A (en) * | 2019-11-29 | 2020-05-05 | 广东航科新材料有限公司 | Carbon fiber composite material and preparation method thereof |
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Application publication date: 20190628 |