Carbon fiber manufactures streamline
Technical field
The present invention relates to a kind of carbon fiber, more particularly to a kind of carbon fiber manufacture streamline.
Background technology
Carbon fiber (carbon fiber, abbreviation CF), it is a kind of high intensity of phosphorus content more than 95%, high modulus fibre
New fiber materials.It is to be piled up to form along fiber axial direction by organic fibers such as flake graphites, through carbonization and stone
Microcrystalline graphite material obtained from blackization processing.Carbon fiber " soft outside but hard inside ", quality is lighter than metallic aluminium, but intensity is higher than steel
Iron, and there is corrosion-resistant, high-modulus characteristic, all it is important materials in defence and military and civilian aspect.It not only has carbon
The intrinsic intrinsic property of material, have both the soft machinability of textile fabric again, be reinforcing fiber of new generation.
Carbon fiber can use polyacrylonitrile fibre, pitch fibers, viscose or phenolic fibre to be made through being carbonized respectively.Using compared with
Universal carbon fiber is mainly polyacrylonitrile carbon fiber and asphalt-based carbon fiber.The manufacture of carbon fiber include fibre spinning, pre-oxidation,
4 processes such as carbonization, graphitization.Adjoint chemical change includes therebetween, dehydrogenation, cyclisation, pre-oxidation, oxidation and deoxidation etc..
In the prior art, preoxidation process is carried out using resistance-heated furnace, just has the drawbacks of this technical scheme to be
In preoxidation process can not to fiber carry out drawing-off, and can not drawing-off can cause pre-oxidation after the fiber molecule degree of orientation it is inadequate
Height, the incipient stage in turn resulting in carbon fiber in production just do not possess preferable intensity.
In the prior art, the mode of heating used in carbonisation needs that furnace temperature is brought up to predetermined high temperature in advance simultaneously
State, its most of heat energy are not for heating fiber, but for improving the temperature of stove in itself, therefore are caused a large amount of
Energy waste.
The content of the invention
Instant invention overcomes the deficiencies in the prior art, there is provided a kind of higher and more energy efficient carbon fiber manufacture of fiber-wall-element model degree
Streamline.
To reach above-mentioned purpose, the technical solution adopted by the present invention is:A kind of carbon fiber manufactures streamline, including:Along stream
Precursor process units, pre-oxidation device, carbonizing apparatus and the graphitizing device that waterline is set gradually, it is characterised in that described pre-
Oxidation unit includes the equal hot cell of graphite and is arranged on the drafter at the equal hot cell both ends of the graphite, the graphite equal room side heat week
It is provided with flame source.
In a preferred embodiment of the present invention, the carbonizing apparatus includes the high frequency induction heater of periphery wound around coil,
The double-deck passage that the high frequency induction heater is provided through, inner-layer channel are fiber channel, and outer layer channel is around described
The gas curtain passage of inner-layer channel.
In a preferred embodiment of the present invention, the drafting system can be led to the fiber run in graphite soaking room
Stretch.
In a preferred embodiment of the present invention, the drafting system is to be arranged on the outside of the equal hot cell Liang Ge ends of the graphite
Each one group of drawing-off wheel.
In a preferred embodiment of the present invention, the flame source is the fire that flame calcination can be carried out to the equal hot cell of the graphite
Flame.
In a preferred embodiment of the present invention, the gas curtain passage is passed through argon gas or nitrogen.
In a preferred embodiment of the present invention, what the coil of the high frequency induction heater was passed through is micro voltage electric current or micro-
Voltage x current.Voltage is less than 0.1V, and electric current is less than 0.01mA.
The present invention solves defect present in background technology, and the present invention possesses following beneficial effect:
(1) set the equal hot cell of graphite to coordinate with flame source, the Thermal conductivity that graphite has, itself soaking can be played
Effect, and then ensure the heated stable homogeneous of fiber, the effect of pre-oxidation is ensured.
(2) mode of heating in the equal hot cell of graphite and its own structure can ensure its structure during to fiber preoxidation
Drawing-off of the drafter to fiber is not interfered with, therefore the present invention realizes the energy for synchronously possessing drawn fiber in preoxidation process
Power, now the degree of orientation of fiber be further improved, ensure carbon fiber be just provided with the preferable strength of materials in producing initial stage
Performance.
(3) fiber possesses the characteristic of electric conductivity after high frequency induction heater make use of pre-oxidation, and it uses electromagnetic field sense
It should heat so that the fiber self-heating in fiber channel, the main heating target of electric energy are fiber, and the object of heating is more
With specific aim, energy resource consumption substantially reduces.
(4) electric current of no-voltage will not cause fiber filoplume tool because high voltage produces the phenomenon of point discharge sparking.
(5) argon gas or nitrogen that gas curtain passage is passed through, on the one hand can play protection fiber in carbonisation with oxygen
The unnecessary oxidation brought is contacted, on the other hand, the flowing of argon gas or nitrogen can be in time by high frequency induction heater periphery
Heat is taken away, and prevents high frequency induction heater temperature is too high from producing damage.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples;
Fig. 1 is the structural representation of the preferred embodiments of the present invention;
In figure:1st, precursor process units, 2, drawing-off wheel, 3, the equal hot cell of graphite, 4, flame source, 5, high frequency induction heater, 6,
Fiber channel, 7, gas curtain passage, 8, fiber.
Embodiment
Presently in connection with drawings and examples, the present invention is further detailed explanation, and these accompanying drawings are simplified signal
Figure, only illustrate the basic structure of the present invention in a schematic way, therefore it only shows the composition relevant with the present invention.
As shown in figure 1, a kind of carbon fiber manufacture streamline, including:The precursor process units 1 that is set gradually along streamline,
Device, carbonizing apparatus and graphitizing device (not shown) are pre-oxidized, pre-oxidation device includes the equal hot cell 3 of graphite and is arranged on graphite
The drafter at the equal both ends of hot cell 3, is provided with flame source 4 in the graphite equal side week of hot cell 3.The equal hot cell 3 of graphite is set to coordinate with flame source 4,
The Thermal conductivity that graphite has, the effect of itself soaking can be played, and then ensure the heated stable homogeneous of fiber, pre-oxidation
Effect ensured.
The mode of heating in the equal hot cell 3 of graphite and its own structure can ensure that its structure is not during to fiber preoxidation
Drawing-off of the drafter to fiber can be influenceed, therefore the present invention realizes the energy for synchronously possessing drawn fiber in preoxidation process
Power, now the degree of orientation of fiber be further improved, ensure carbon fiber be just provided with the preferable strength of materials in producing initial stage
Performance.
Carbonizing apparatus includes the high frequency induction heater 5 of periphery wound around coil, what high frequency induction heater 5 was provided through
Double-deck passage, inner-layer channel are fiber channel 6, and outer layer channel is the gas curtain passage 7 of wrappage around internal layer passage.High frequency induction heater
5 make use of pre-oxidation after fiber possess the characteristic of electric conductivity, it uses electromagnetic field inducing to heat so that in fiber channel 6
Fiber self-heating, the main heating target of electric energy is fiber, and the object of heating more has specific aim, and energy resource consumption is significantly
Reduce.
Drafting system can carry out drawing-off to the fiber of operation in the equal hot cell of graphite 3, and drafting system is equal to be arranged on graphite
Each one group of drawing-off wheel 2 on the outside of the end of 3 two, hot cell.
Flame source 4, can be real by modes such as the natural gases that burns for the flame of flame calcination can be carried out to the equal hot cell 3 of graphite
It is existing.
Gas curtain passage 7 is passed through argon gas or nitrogen.The argon gas or nitrogen that gas curtain passage 7 is passed through, on the one hand can play protection
Fiber contacts the unnecessary oxidation brought in carbonisation with oxygen, and on the other hand, the flowing of argon gas or nitrogen can be timely
The heat of the periphery of high frequency induction heater 5 is taken away, prevents the temperature of high frequency induction heater 5 is too high from producing damage.
What the coil of high frequency induction heater 5 was passed through is zero-voltage current or micro voltage electric current.The electric current of no-voltage will not
Cause fiber filoplume tool because high voltage produces the phenomenon of point discharge sparking.
The desirable embodiment according to the present invention is enlightenment above, and by above-mentioned description, related personnel completely can be with
Without departing from the scope of the technological thought of the present invention', various changes and amendments are carried out.The technical scope of this invention
The content being not limited on specification, it is necessary to determine the technical scope according to the scope of the claims.