CN103786277B - Continuous long carbon fiber strengthens preparation method and its equipment of nylon - Google Patents
Continuous long carbon fiber strengthens preparation method and its equipment of nylon Download PDFInfo
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- CN103786277B CN103786277B CN201410040697.5A CN201410040697A CN103786277B CN 103786277 B CN103786277 B CN 103786277B CN 201410040697 A CN201410040697 A CN 201410040697A CN 103786277 B CN103786277 B CN 103786277B
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Abstract
The invention provides a kind of continuous long carbon fiber strengthens preparation method and its equipment of nylon；Methods described comprises the steps：Step one, carbon fiber is added reactive tank with compatilizer, carries out graft reaction, obtain product A；Step 2, described product A enters infiltration cell processing, involves, cools down, dries, you can.The invention still further relates to aforesaid continuous long carbon fiber strengthens the equipment of the preparation method of nylon, described equipment includes：Housing, reactive tank, infiltrate unit, described reaction is connected with infiltration unit, and described housing is the wear-resisting steel crossed through over carburizing and nitrogen treatment.Present device has added a reactive tank that carbon fiber is carried out with pretreatment, enhances the adhesion between nylon and carbon fiber so that the performance of end article can be very high.It is characteristic of the invention that lower processing cost, higher yield, higher production stability, higher material property.
Description
Technical field
The present invention relates to a kind of preparation method of carbon fiber and production equipment, especially a kind of continuous long carbon fiber enhancing Buddhist nun
The preparation method of dragon and its equipment.
Background technology
The carbon fiber length of the carbon fiber reinforced nylon that traditional method of modifying produces is generally less than 0.5mm, average length
2～3mm, the stress destruction of its product is mainly carbon fiber and extracts from matrix, carbon fiber more short easier from base nylon
Extract, the intensity of product is lower.In eighties of last century latter stage, external modification of nylon industry starts to emerge continuous long carbon fiber enhancing
Nylon（LFT）.Compared with traditional carbon fiber reinforced nylon, the carbon fiber length of LFT is significantly greater than the increasing of produced in conventional processes
The length of carbon fiber in strong nylon.Because the length of carbon fiber in LFT is longer, preferably play the enhancing ability of carbon fiber,
Thus giving product higher rigid, mechanical strength, impact strength, creep resistance, simultaneously because the length of carbon fiber is longer,
During molding, carbon fiber is less likely to occur to be orientated, so improving traditional carbon fibres to strengthen the easy buckling deformation of product
Defect.Compared with traditional material, LFT has substantially high performance advantage and the dimensional stability of product, so LFT material
It is quickly become in composite markets just in a class new product of projection.
This kind of material, as to mould the best solution of Dai Gang, is largely used to auto industry, to mitigate the weight of automobile
Amount, energy-saving and emission-reduction.As for the bumper of automobile, instrument board support bracket, accumulator load-bearing groove, chair framework, hood
The parts such as lid.It is additionally operable to numerous neck such as household electrical appliances, environmental protection machinery, building, engineering, Aeronautics and Astronautics in addition to for automotive field
Domain.
At present, the production of LFT material is based on infiltrated with molten metal method.Its technical process is carbon fiber in the presence of pull strength
Pass through the die cavity full of melt, carbon fiber bundle scatters in die cavity in the presence of interior arrangement, is then infiltrated carbon by nylon
The inside of fibre bundle, and each carbon fiber wire is fully contacted.The carbon fiber bundle being then passed through infiltrating goes out from infiltration equipment carbon fiber
Mouthful involve, more cooled, dry after be cut into the continuous long carbon fiber of Len req and strengthen nylon particles.But what this material produced
Key technology is that can nylon fully quickly be infiltrated to carbon fiber.Key technology is embodied in：1）Carbon fiber
During being equipped by infiltration, the degree of wear is less, because if the degree of wear seriously easily blocks immersion equipment, leads to produce
Unstable；2）Carbon fiber, during infiltration equipment, will fully be infiltrated by internal melted nylon, or even nylon is coated to
Every carbon mono-filaments, because effect of impregnation is bad, the outward appearance of product floats fibre seriously, and the intensity of product is not high simultaneously；3）Carbon is fine
Dimension is faster by the linear velocity of infiltration apparatus, and the yield of LFT material is higher, simultaneously the processing cost of the LFT material of Unit Weight
Lower.The infiltration equipment that only three above key technology is attained by just can be regarded as successful equipment.
French atropic company 1989 Patents disclosed in Chinese patent CN1021643C, it is characterized by one is similar just profound
The bending infiltration runner of curve.The nylon having plastified is entered in die cavity and is contacted with carbon fiber, and carbon fiber bundle is being flowed by bending
When the crest in road and trough, scatter under tension, be then melted nylon and fully infiltrate.The advantage of this Patent design
It is that nylon is preferable to the effect of impregnation of carbon fiber, but there is very serious defect, and that is, carbon fiber wire is easily worn,
Especially hauling speed is faster, and the tension force that carbon fiber is subject to is bigger, more easily weares and teares, and causes to produce unstable, or even causes to stop
Produce.We also consult and demonstrate the granted patent of other companies domestic or colleges and universities simultaneously.All exist in varying degrees
Defect, is capable of almost not having of above-mentioned 3 key technologies.
Content of the invention
For defect of the prior art, it is an object of the invention to provide a kind of continuous long carbon fiber strengthens the preparation of nylon
Method and its equipment.
The present invention is achieved by the following technical solutions：
In a first aspect, the present invention provides a kind of continuous long carbon fiber to strengthen the preparation method of nylon, methods described include as
Lower step：
Step one, carbon fiber is added reactive tank with nylon compatilizer, carries out graft reaction, obtain product A；
Step 2, described product A enters infiltration cell processing, involves, cools down, dries, you can.
Second aspect, the invention still further relates to aforesaid continuous long carbon fiber strengthens the equipment of the preparation method of nylon, described
Equipment includes：Housing, reactive tank, infiltrate unit, described reaction with infiltration unit be connected, described housing be through over carburizing with
The wear-resisting steel that nitrogen treatment is crossed.
Preferably, described reactive tank is provided with reactive tank carbon fiber entrance and the outlet of reactive tank carbon fiber.
Preferably, described infiltration unit includes：Nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber
Dispersion running roller, nylon passage, described carbon fiber dispersion running roller is connected with nylon passage, and described carbon fiber entrance is arranged on carbon
On fiber dispersion running roller, described nylon imports feeder connection and is arranged on described nylon passage.
Preferably, the cross section of described reactive tank carbon fiber entrance be major axis be 3～8mm, short axle is the ellipse of 2～6mm.
Preferably, the cross section of described reactive tank carbon fiber entrance be major axis be 3～6mm, short axle is the ellipse of 2～4mm.
Preferably, described nylon imports feeder connection is a slit, and the gap of slit is 1～4mm.
Preferably, the cross section of described carbon fiber entrance is 3～6mm for major axis, and short axle is the ellipse of 2～7mm.
Preferably, the cross section of described carbon fiber outlet is 2～8mm for major axis, and short axle is the ellipse of 2～6mm.
Preferably, described carbon fiber dispersion running roller is with helical groove structure, wherein, bottom portion of groove is a width of 6～
20mm, the depth of groove is 3～10mm.
Compared with prior art, the present invention has following beneficial effect：
（1）During carbon fiber passes through present device, the degree of wear is less, if the degree of wear seriously easily blocking leaching
Profit equipment, leads to stop production；
（2）Carbon fiber, during present device, fully will be infiltrated by internal melted nylon, or even nylon bag
It is layed onto every carbon mono-filaments, because effect of impregnation is bad, the outward appearance of product floats fibre seriously, and the intensity of product is not high simultaneously；
（3）The linear velocity that carbon fiber passes through present device is very fast, and the yield of LFT material is high, the LFT of Unit Weight simultaneously
The processing cost of material is low；
（4）Present device has added equipment a --- reactive tank that carbon fiber is carried out with pretreatment（This reactive tank is by carbon
Fiber is grafted on carbon fiber with the compatilizer of nylon）, enhance adhesion between nylon and carbon fiber so that end article
Performance can be very high.
（5）It is characteristic of the invention that lower processing cost, higher yield, higher production stability, higher material
Material performance.
Brief description
The detailed description with reference to the following drawings, non-limiting example made by reading, the further feature of the present invention,
Objects and advantages will become more apparent upon：
Fig. 1 is carbon fiber dispersion infiltration roller arrangement figure in present device；
Fig. 2 is the structural representation of present device；Wherein 1 is reactive tank, and 2 is carbon fiber lead, and 3 divide for carbon fiber
Dissipate infiltration running roller, 11 is carbon fiber entrance, 12 is reactive tank outlet, 31 is infiltration equipment fiber entry, and 32 is that infiltration equipment is fine
Dimension outlet, 34 is nylon passage, and 35 is infiltration equipment passage.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail.Following examples will be helpful to the technology of this area
Personnel further understand the present invention, but the invention is not limited in any way.It should be pointed out that the ordinary skill to this area
For personnel, without departing from the inventive concept of the premise, some deformation can also be made and improve.These broadly fall into the present invention
Protection domain.
Embodiment 1
The present embodiment is related to the preparation method that a kind of continuous long carbon fiber strengthens nylon, and methods described comprises the steps：
Step one, carbon fiber is added reactive tank with compatilizer, carries out graft reaction, obtain product A；
Step 2, described product A enters infiltration cell processing, involves, cools down, dries, you can.
The present embodiment further relates to the equipment that aforesaid continuous long carbon fiber strengthens the preparation method of nylon, described equipment bag
Include：Housing, reactive tank, infiltrate unit, described reaction with infiltrate unit be connected, described housing be through over carburizing and nitridation at
The wear-resisting steel managed, as shown in Figure 2.
Described reactive tank is provided with reactive tank carbon fiber entrance and the outlet of reactive tank carbon fiber.
Described infiltration unit includes：Nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion roller
Wheel, nylon passage, described carbon fiber dispersion running roller is connected with nylon passage, and described carbon fiber entrance is arranged on carbon fiber and divides
Scattered running roller（As shown in Figure 1）On, described nylon imports feeder connection and is arranged on described nylon passage.It is single that carbon fiber enters infiltration
After carbon fiber dispersion running roller within unit, it is wrapped on roller along carbon fiber dispersion running roller, winds with one circuit fine from adjacent carbon
The track of dimension dispersion running roller leaves running roller, then introduces the grooved tracks of next running roller.
Parameter in equipment is as follows in the present embodiment：
The cross section of described reactive tank carbon fiber entrance is major axis is 3mm, and short axle is the ellipse of 2mm.
It is a slit that described nylon imports feeder connection, and the gap of slit is 1mm.
The cross section of described carbon fiber entrance is 3mm for major axis, and short axle is the ellipse of 2mm.
The cross section of described carbon fiber outlet is 2mm for major axis, and short axle is the ellipse of 2mm.
Described carbon fiber dispersion running roller is with helical groove structure, wherein, a width of 6mm of bottom portion of groove, the depth of groove
Spend for 3mm.
Embodiment 2
The present embodiment is related to the preparation method that a kind of continuous long carbon fiber strengthens nylon, and methods described comprises the steps：
Step one, carbon fiber is added reactive tank with compatilizer, carries out graft reaction, obtain product A；
Step 2, described product A enters infiltration cell processing, involves, cools down, dries, you can.
The present embodiment further relates to the equipment that aforesaid continuous long carbon fiber strengthens the preparation method of nylon, described equipment bag
Include：Housing, reactive tank, infiltrate unit, described reaction with infiltrate unit be connected, described housing be through over carburizing and nitridation at
The wear-resisting steel managed, as shown in Figure 2.
Described reactive tank is provided with reactive tank carbon fiber entrance and the outlet of reactive tank carbon fiber.
Described infiltration unit includes：Nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion roller
Wheel, nylon passage, described carbon fiber dispersion running roller is connected with nylon passage, and described carbon fiber entrance is arranged on carbon fiber and divides
Scattered running roller（As shown in Figure 1）On, described nylon imports feeder connection and is arranged on described nylon passage.It is single that carbon fiber enters infiltration
After carbon fiber dispersion running roller within unit, it is wrapped on roller along carbon fiber dispersion running roller, winds with one circuit fine from adjacent carbon
The track of dimension dispersion running roller leaves running roller, then introduces the grooved tracks of next running roller.
Parameter in equipment is as follows in the present embodiment：
The cross section of described reactive tank carbon fiber entrance is major axis is 8mm, and short axle is the ellipse of 6mm.
It is a slit that described nylon imports feeder connection, and the gap of slit is 4mm.
The cross section of described carbon fiber entrance is 6mm for major axis, and short axle is the ellipse of 7mm.
The cross section of described carbon fiber outlet is 8mm for major axis, and short axle is the ellipse of 6mm.
Described carbon fiber dispersion running roller is with helical groove structure, wherein, a width of 20mm of bottom portion of groove, the depth of groove
Spend for 10mm.
Embodiment 3
The present embodiment is related to the preparation method that a kind of continuous long carbon fiber strengthens nylon, and methods described comprises the steps：
Step one, carbon fiber is added reactive tank with compatilizer, carries out graft reaction, obtain product A；
Step 2, described product A enters infiltration cell processing, involves, cools down, dries, you can.
The present embodiment further relates to the equipment that aforesaid continuous long carbon fiber strengthens the preparation method of nylon, described equipment bag
Include：Housing, reactive tank, infiltrate unit, described reaction with infiltrate unit be connected, described housing be through over carburizing and nitridation at
The wear-resisting steel managed, as shown in Figure 2.
Described reactive tank is provided with reactive tank carbon fiber entrance and the outlet of reactive tank carbon fiber.
Described infiltration unit includes：Nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion roller
Wheel, nylon passage, described carbon fiber dispersion running roller is connected with nylon passage, and described carbon fiber entrance is arranged on carbon fiber and divides
Scattered running roller（As shown in Figure 1）On, described nylon imports feeder connection and is arranged on described nylon passage.It is single that carbon fiber enters infiltration
After carbon fiber dispersion running roller within unit, it is wrapped on roller along carbon fiber dispersion running roller, winds with one circuit fine from adjacent carbon
The track of dimension dispersion running roller leaves running roller, then introduces the grooved tracks of next running roller.
Parameter in equipment is as follows in the present embodiment：
The cross section of described reactive tank carbon fiber entrance is major axis is 6mm, and short axle is the ellipse of 6mm.
It is a slit that described nylon imports feeder connection, and the gap of slit is 4mm.
The cross section of described carbon fiber entrance is 6mm for major axis, and short axle is the ellipse of 7mm.
The cross section of described carbon fiber outlet is 8mm for major axis, and short axle is the ellipse of 6mm.
Described carbon fiber dispersion running roller is with helical groove structure, wherein, a width of 20mm of bottom portion of groove, the depth of groove
Spend for 10mm.
The performance test of the product of the present embodiment 1～3 preparation is as shown in table 1.
Table 1
| Test event | Method of testing | Unit | Test condition | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Tensile strength | ASTM D638 | MPa | 5mm/min | 300 | 240 | 250 |
| Elongation at break | ASTM D638 | % | 5mm/min | 2.1 | 1.8 | 1.5 |
| Bending strength | ASTM D790 | MPa | 2mm/min | 390 | 380 | 400 |
| Bending moduluses | ASTM D790 | MPa | 2mm/min | 19000 | 18000 | 17000 |
| Notch impact strength | ASTM D256 | J/m | 400 | 200 | 250 | |
| Unnotched impact strength | ASTM D256 | |||||
| Rockwell hardness | ASTM D785 | R | 23℃ | 120 | 130 | 120 |
| Ash | ASTM D5630 | % | 40 | 50 | 60 |
The operation principle of present device is：Carbon fiber first passes through reactive tank, with compatilizer, graft reaction, Ran Houjing occurs
Infiltration carbon fiber entrance enters in infiltration unit.Melted nylon enters in infiltration unit die cavity through nylon introduction channel.?
Full of carbon fiber bundle in the die cavity of melt, under tension force traction, dislocation bypasses infiltration running roller, simultaneously because infiltration running roller can make carbon
Fiber fully scatters, and promotes melted nylon to infiltrate inside carbon fiber bundle, then by the carbon fiber bundle of fully infiltration from carbon fiber
Outlet involves.The carbon fiber bundle having infiltrated is cooled, dry after be cut into the continuous long carbon fiber of Len req and strengthen nylon particles.
Above the specific embodiment of the present invention is described.It is to be appreciated that the invention is not limited in above-mentioned
Particular implementation, those skilled in the art can make various modifications or modification within the scope of the claims, this not shadow
Ring the flesh and blood of the present invention.
Claims (7)
1. a kind of continuous long carbon fiber strengthen nylon preparation method it is characterised in that methods described include as follows
Step：
Step one, carbon fiber is added reactive tank with nylon compatilizer, carries out graft reaction, obtain product A；
Step 2, described product A enters infiltration cell processing, involves, cools down, dries, you can；
The Preparation equipment that described continuous long carbon fiber strengthens nylon includes：Housing, reactive tank, infiltrate unit, described reactive tank with
Infiltration unit is connected, and described housing is the wear-resisting steel crossed through over carburizing and nitrogen treatment；
Described reactive tank is provided with reactive tank carbon fiber entrance and the outlet of reactive tank carbon fiber；
Described infiltration unit includes：Nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion running roller, Buddhist nun
Imperial passage, described carbon fiber dispersion running roller is connected with nylon passage, and described carbon fiber entrance is arranged on carbon fiber dispersion roller
On wheel, described nylon imports feeder connection and is arranged on described nylon passage.
2. continuous long carbon fiber as claimed in claim 1 strengthens the preparation method of nylon it is characterised in that described reactive tank carbon
The cross section of fiber entry is major axis is 3～8mm, and short axle is the ellipse of 2～6mm.
3. continuous long carbon fiber as claimed in claim 1 strengthens the preparation method of nylon it is characterised in that described reactive tank carbon
The cross section of fiber entry is major axis is 3～6mm, and short axle is the ellipse of 2～4mm.
4. continuous long carbon fiber as claimed in claim 1 strengthens the equipment of the preparation method of nylon it is characterised in that described Buddhist nun
Imperial introduction channel entrance is a slit, and the gap of slit is 1～4mm.
5. continuous long carbon fiber as claimed in claim 1 strengthens the preparation method of nylon it is characterised in that described carbon fiber enters
The cross section of mouth is 3～6mm for major axis, and short axle is the ellipse of 2～7mm.
6. continuous long carbon fiber as claimed in claim 1 strengthens the preparation method of nylon it is characterised in that described carbon fiber goes out
The cross section of mouth is 2～8mm for major axis, and short axle is the ellipse of 2～6mm.
7. continuous long carbon fiber as claimed in claim 1 strengthens the preparation method of nylon it is characterised in that described carbon fiber divides
Scattered running roller is with helical groove structure, wherein, a width of 6～20mm of bottom portion of groove, the depth of groove is 3～10mm.
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| CN201410040697.5A CN103786277B (en) | 2014-01-27 | 2014-01-27 | Continuous long carbon fiber strengthens preparation method and its equipment of nylon |
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| CN107868448B (en) * | 2017-10-26 | 2020-12-01 | 长沙五犇新材料科技有限公司 | Continuous fiber reinforced long carbon chain nylon composite board |
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| CN101338051B (en) * | 2008-08-08 | 2010-12-15 | 苏州工业园区和昌电器有限公司 | Long glass fiber reinforced polypropylene material and preparation thereof |
| CN202344835U (en) * | 2011-10-16 | 2012-07-25 | 上海杰事杰新材料(集团)股份有限公司 | Impregnation tension roller combination device |
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