CN103786277A - Preparation method of continuous long carbon fiber reinforced nylon and equipment for preparing nylon - Google Patents
Preparation method of continuous long carbon fiber reinforced nylon and equipment for preparing nylon Download PDFInfo
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- CN103786277A CN103786277A CN201410040697.5A CN201410040697A CN103786277A CN 103786277 A CN103786277 A CN 103786277A CN 201410040697 A CN201410040697 A CN 201410040697A CN 103786277 A CN103786277 A CN 103786277A
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Abstract
The invention provides a preparation method of continuous long carbon fiber reinforced nylon and equipment for preparing the nylon. The method comprises the following steps: 1. adding carbon fibers and a compatilizer to a reaction tank for performing grafting reaction, thus obtaining a product A; and 2. processing the product A in an infiltration unit and pulling out, cooling and drying the product A, thus obtaining the continuous long carbon fiber reinforced nylon. The invention also relates to the equipment for preparing the nylon with the preparation method. The equipment comprises a shell, the reaction tank and the infiltration unit, wherein the reaction tank is communicated with the infiltration unit; the shell is made from wear-resistant steel subjected to carburizing and nitriding. The equipment has the beneficial effects that the binding force between nylon and the carbon fibers is reinforced by adding the reaction tank for pretreating the carbon fibers, so that the final product has very high performance; the preparation method and the equipment have the characteristics of low processing cost, high yield, high production stability and high material performance.
Description
Technical field
The present invention relates to a kind of preparation method and production equipment of carbon fiber, especially a kind of continuous long carbon fiber strengthens preparation method and the equipment thereof of nylon.
Background technology
The carbon fiber length of the carbon fiber reinforced nylon that traditional method of modifying is produced is generally less than 0.5mm, average length is 2～3mm, the stress destruction of its goods is mainly that carbon fiber is extracted from matrix, and carbon fiber is more short more easily to be extracted from matrix nylon, and the intensity of goods is just lower.Eighties of last century latter stage, external modification of nylon industry starts to emerge continuous long carbon fiber and strengthens nylon (LFT).Compared with traditional carbon fiber reinforced nylon, the carbon fiber length of LFT is obviously greater than the length of carbon fiber in the enhancing nylon of produced in conventional processes.Because the length of carbon fiber in LFT is longer, bring into play better the enhancing ability of carbon fiber, thereby give rigidity, mechanical strength, impact strength, creep resistance that goods are higher, simultaneously because the length of carbon fiber is longer, in the process of moulding, carbon fiber is not easy to be orientated, so improved the defect of the easy buckling deformations of traditional carbon fibres enhancing goods.Compared with traditional material, LFT has obviously high performance advantage and the dimensional stability of goods, so LFT material becomes in composite markets the just class new product in projection very soon.
This class material is as the best solution to mould Dai Gang, by a large number for auto industry, to alleviate the weight of automobile, energy-saving and emission-reduction.As the bumper for automobile, instrument board support bracket, battery load-bearing groove, chair framework, the parts such as engine bonnet.Except for automotive field also for various fields such as household electrical appliances, environmental protection machinery, building, engineering, Aeronautics and Astronautics.
At present, the production of LFT material is take infiltrated with molten metal method as main.Its technical process is that carbon fiber passes the die cavity that is full of melt under the effect of tractive force, and carbon fiber bundle scatters in die cavity under the effect of interior arrangement, is then infiltrated the inside of carbon fiber bundle by nylon, fully contacts with each carbon fiber wire.Then involve from infiltrating equipment carbon fiber outlet through the carbon fiber bundle infiltrating, then strengthen nylon particle through continuous long carbon fiber cooling, that be cut into Len req after drying.But being just nylon, the key technology of this manufacture of materials can infiltrate fully fast carbon fiber.Key technology is embodied in: 1) carbon fiber is by infiltrating in equipment process, and the degree of wear is less, because if the serious immersion equipment that easily stops up of the degree of wear causes producing unstable; 2) carbon fiber, through infiltrating in equipment process, fully be infiltrated by inner melted nylon, and even nylon bag is layed onto every carbon fiber monofilament, because effect of impregnation is bad, the outward appearance of goods is floating fine serious, and the intensity of goods is not high simultaneously; 3) carbon fiber is faster by the linear velocity of infiltration apparatus, and the output of LFT material is higher, and the processing cost of the LFT material of Unit Weight is lower simultaneously.Only have the infiltration equipment that above three key technologies can reach just to can be regarded as successful equipment.
Atropic company 1989 of France is at the disclosed Patents of Chinese patent CN1021643C, and the bending that it is characterized by a similar just profound curve infiltrates runner.The nylon having plastified enters in die cavity and contacts with carbon fiber, and carbon fiber bundle, in the time of the crest by curved channel and trough, scatters under the effect of tension force, is then melted nylon and fully infiltrates.The advantage of this Patent design is that nylon is better to the effect of impregnation of carbon fiber, but exists very serious defect, be that carbon fiber wire is easily worn, especially hauling speed is faster, and the tension force that carbon fiber is subject to is larger, more easily wearing and tearing, cause production unstable, even cause stopping production.We also consult and have verified the granted patent of domestic other companies or colleges and universities simultaneously.All exist in varying degrees some defects, can realize almost not having of above-mentioned 3 key technologies.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of preparation method and equipment thereof of continuous long carbon fiber enhancing nylon.
The present invention is achieved by the following technical solutions:
First aspect, the invention provides a kind of continuous long carbon fiber and strengthens the preparation method of nylon, and described method comprises the steps:
Second aspect, the invention still further relates to aforesaid continuous long carbon fiber and strengthens the preparation method's of nylon equipment, and described equipment comprises: housing, reactive tank, infiltrate unit, described reaction is connected with infiltrating unit, and described housing is the wear-resisting steel of crossing through over carburizing and nitrogen treatment.
Preferably, described reactive tank is provided with reactive tank carbon fiber entrance and the outlet of reactive tank carbon fiber.
Preferably, described infiltration unit comprises: nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion running roller, nylon passage, described carbon fiber disperses running roller and nylon passage to be connected, described carbon fiber entrance is arranged on carbon fiber to be disperseed on running roller, and described nylon imports feeder connection and is arranged on described nylon passage.
Preferably, the cross section of described reactive tank carbon fiber entrance is that major axis is 3～8mm, the ellipse that minor axis is 2～6mm.
Preferably, the cross section of described reactive tank carbon fiber entrance is that major axis is 3～6mm, the ellipse that minor axis is 2～4mm.
Preferably, it is a slit that described nylon imports feeder connection, and the gap of slit is 1～4mm.
Preferably, the cross section of described carbon fiber entrance is that major axis is 3～6mm, the ellipse that minor axis is 2～7mm.
Preferably, the cross section of described carbon fiber outlet is that major axis is 2～8mm, the ellipse that minor axis is 2～6mm.
Preferably, it is with helical groove structure that described carbon fiber disperses running roller, and wherein, bottom portion of groove is wide is 6～20mm, and the degree of depth of groove is 3～10mm.
Compared with prior art, the present invention has following beneficial effect:
(1) carbon fiber is by present device process, and the degree of wear is less, if the serious immersion equipment that easily stops up of the degree of wear causes stopping production;
(2) carbon fiber, in through present device process, fully be infiltrated by inner melted nylon, and even nylon bag is layed onto every carbon fiber monofilament, because effect of impregnation is bad, the outward appearance of goods is floating fine serious, and the intensity of goods is not high simultaneously;
(3) carbon fiber is very fast by the linear velocity of present device, and the output of LFT material is high, and the processing cost of the LFT material of Unit Weight is low simultaneously;
(4) present device has added one carbon fiber has been carried out to pretreated equipment---reactive tank (this reactive tank is grafted to the compatilizer of carbon fiber and nylon on carbon fiber), strengthen the adhesion between nylon and carbon fiber, made the performance of end article can be very high.
(5) feature of the present invention is lower processing cost, higher output, higher production stability, higher material property.
Accompanying drawing explanation
By reading the detailed description of non-limiting example being done with reference to the following drawings, it is more obvious that other features, objects and advantages of the present invention will become:
Fig. 1 is that in present device, carbon fiber disperses to infiltrate running roller structure chart;
Fig. 2 is the structural representation of present device; Wherein 1 is reactive tank, and 2 is carbon fiber lead, and 3 for carbon fiber disperses to infiltrate running roller, and 11 is carbon fiber entrance, and 12 is reactive tank outlet, and 31 for infiltrating equipment fiber entry, and 32 for infiltrating equipment fiber outlet, and 34 is nylon passage, and 35 for infiltrating equipment passage.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
The present embodiment relates to a kind of preparation method of continuous long carbon fiber enhancing nylon, and described method comprises the steps:
The present embodiment also relates to the preparation method's of aforesaid continuous long carbon fiber enhancing nylon equipment, and described equipment comprises: housing, reactive tank, infiltrate unit, described reaction is connected with infiltrating unit, and described housing is the wear-resisting steel of crossing through over carburizing and nitrogen treatment, 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 comprises: nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion running roller, nylon passage, described carbon fiber disperses running roller and nylon passage to be connected, described carbon fiber entrance is arranged on carbon fiber to be disperseed in running roller (see figure 1), and described nylon imports feeder connection and is arranged on described nylon passage.Carbon fiber enters after the carbon fiber dispersion running roller that infiltrates inside, unit, disperses running roller to be wrapped on roller along carbon fiber, winds with one circuit and disperses the track of running roller to leave running roller from adjacent carbon fiber, 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 that major axis is 3mm, the ellipse that minor axis is 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 that major axis is 3mm, the ellipse that minor axis is 2mm.
The cross section of described carbon fiber outlet is that major axis is 2mm, the ellipse that minor axis is 2mm.
It is with helical groove structure that described carbon fiber disperses running roller, and wherein, bottom portion of groove is wide is 6mm, and the degree of depth of groove is 3mm.
The present embodiment relates to a kind of preparation method of continuous long carbon fiber enhancing nylon, and described method comprises the steps:
The present embodiment also relates to the preparation method's of aforesaid continuous long carbon fiber enhancing nylon equipment, and described equipment comprises: housing, reactive tank, infiltrate unit, described reaction is connected with infiltrating unit, and described housing is the wear-resisting steel of crossing through over carburizing and nitrogen treatment, 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 comprises: nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion running roller, nylon passage, described carbon fiber disperses running roller and nylon passage to be connected, described carbon fiber entrance is arranged on carbon fiber to be disperseed in running roller (see figure 1), and described nylon imports feeder connection and is arranged on described nylon passage.Carbon fiber enters after the carbon fiber dispersion running roller that infiltrates inside, unit, disperses running roller to be wrapped on roller along carbon fiber, winds with one circuit and disperses the track of running roller to leave running roller from adjacent carbon fiber, 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 that major axis is 8mm, the ellipse that minor axis is 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 that major axis is 6mm, the ellipse that minor axis is 7mm.
The cross section of described carbon fiber outlet is that major axis is 8mm, the ellipse that minor axis is 6mm.
It is with helical groove structure that described carbon fiber disperses running roller, and wherein, bottom portion of groove is wide is 20mm, and the degree of depth of groove is 10mm.
The present embodiment relates to a kind of preparation method of continuous long carbon fiber enhancing nylon, and described method comprises the steps:
The present embodiment also relates to the preparation method's of aforesaid continuous long carbon fiber enhancing nylon equipment, and described equipment comprises: housing, reactive tank, infiltrate unit, described reaction is connected with infiltrating unit, and described housing is the wear-resisting steel of crossing through over carburizing and nitrogen treatment, 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 comprises: nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion running roller, nylon passage, described carbon fiber disperses running roller and nylon passage to be connected, described carbon fiber entrance is arranged on carbon fiber to be disperseed in running roller (see figure 1), and described nylon imports feeder connection and is arranged on described nylon passage.Carbon fiber enters after the carbon fiber dispersion running roller that infiltrates inside, unit, disperses running roller to be wrapped on roller along carbon fiber, winds with one circuit and disperses the track of running roller to leave running roller from adjacent carbon fiber, 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 that major axis is 6mm, the ellipse that minor axis is 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 that major axis is 6mm, the ellipse that minor axis is 7mm.
The cross section of described carbon fiber outlet is that major axis is 8mm, the ellipse that minor axis is 6mm.
It is with helical groove structure that described carbon fiber disperses running roller, and wherein, bottom portion of groove is wide is 20mm, and the degree of depth of groove is 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 | | Embodiment | 1 | |
|
| Hot 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 modulus | ASTM?D790 | MPa | 2mm/min | 19000 | 18000 | 17000 | |
| Notched Izod 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 by reactive tank and compatilizer generation graft reaction, then enters into infiltration unit through infiltrating carbon fiber entrance.Melted nylon enters into and infiltrates unit die cavity through nylon introduction channel.In the die cavity that is full of melt, infiltration running roller is walked around in carbon fiber bundle dislocation under tension force traction, can make carbon fiber fully scatter owing to infiltrating running roller simultaneously, promote that melted nylon infiltrates carbon fiber bundle inside, the carbon fiber bundle then fully being infiltrated involves from carbon fiber outlet.The carbon fiber bundle having infiltrated strengthens nylon particle through continuous long carbon fiber cooling, that be cut into Len req after drying.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or modification within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. continuous long carbon fiber strengthens a preparation method for nylon, it is characterized in that, described method comprises the steps:
Step 1, adds reactive tank by carbon fiber and nylon compatilizer, carries out graft reaction, obtains product A;
Step 2, described product A enters infiltration cell processing, involves, cooling, oven dry.
2. continuous long carbon fiber as claimed in claim 1 strengthens the preparation method's of nylon a equipment, it is characterized in that, described equipment comprises: housing, reactive tank, infiltrate unit, described reaction is connected with infiltrating unit, and described housing is the wear-resisting steel of crossing through over carburizing and nitrogen treatment.
3. continuous long carbon fiber as claimed in claim 2 strengthens the preparation method's of nylon equipment, it is characterized in that, described reactive tank is provided with reactive tank carbon fiber entrance and the outlet of reactive tank carbon fiber.
4. continuous long carbon fiber as claimed in claim 2 strengthens the preparation method's of nylon equipment, it is characterized in that, described infiltration unit comprises: nylon imports feeder connection, carbon fiber entrance, carbon fiber outlet, carbon fiber dispersion running roller, nylon passage, described carbon fiber disperses running roller and nylon passage to be connected, described carbon fiber entrance is arranged on carbon fiber to be disperseed on running roller, and described nylon imports feeder connection and is arranged on described nylon passage.
5. continuous long carbon fiber as claimed in claim 3 strengthens the preparation method's of nylon equipment, it is characterized in that, the cross section of described reactive tank carbon fiber entrance is that major axis is 3～8mm, the ellipse that minor axis is 2～6mm.
6. continuous long carbon fiber as claimed in claim 3 strengthens the preparation method's of nylon equipment, it is characterized in that, the cross section of described reactive tank carbon fiber entrance is that major axis is 3～6mm, the ellipse that minor axis is 2～4mm.
7. continuous long carbon fiber as claimed in claim 4 strengthens the preparation method's of nylon equipment, it is characterized in that, it is a slit that described nylon imports feeder connection, and the gap of slit is 1～4mm.
8. continuous long carbon fiber as claimed in claim 4 strengthens the preparation method's of nylon equipment, it is characterized in that, the cross section of described carbon fiber entrance is that major axis is 3～6mm, the ellipse that minor axis is 2～7mm.
9. continuous long carbon fiber as claimed in claim 4 strengthens the preparation method's of nylon equipment, it is characterized in that, the cross section of described carbon fiber outlet is that major axis is 2～8mm, the ellipse that minor axis is 2～6mm.
10. continuous long carbon fiber as claimed in claim 4 strengthens the preparation method's of nylon equipment, it is characterized in that, it is with helical groove structure that described carbon fiber disperses running roller, and wherein, bottom portion of groove is wide is 6～20mm, and the degree of depth of groove is 3～10mm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153631A (en) * | 2015-10-09 | 2015-12-16 | 上海交通大学 | Coating modified carbon fiber enhanced ABS resin composite and preparation method thereof |
| CN107868448A (en) * | 2017-10-26 | 2018-04-03 | 长沙五犇新材料科技有限公司 | A kind of continuous lod long carbon chain nylon composite board |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0890660A (en) * | 1994-09-22 | 1996-04-09 | Idemitsu Petrochem Co Ltd | Manufacture of fiber-reinforced composite material |
| CN101338051A (en) * | 2008-08-08 | 2009-01-07 | 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 |
-
2014
- 2014-01-27 CN CN201410040697.5A patent/CN103786277B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0890660A (en) * | 1994-09-22 | 1996-04-09 | Idemitsu Petrochem Co Ltd | Manufacture of fiber-reinforced composite material |
| CN101338051A (en) * | 2008-08-08 | 2009-01-07 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105153631A (en) * | 2015-10-09 | 2015-12-16 | 上海交通大学 | Coating modified carbon fiber enhanced ABS resin composite and preparation method thereof |
| CN105153631B (en) * | 2015-10-09 | 2019-01-18 | 上海交通大学 | A kind of coating modified fibre reinforced ABS resin composite material and preparation method |
| CN107868448A (en) * | 2017-10-26 | 2018-04-03 | 长沙五犇新材料科技有限公司 | A kind of continuous lod long carbon chain nylon composite board |
| 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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Effective date of registration: 20180716 Address after: 226407 Yang Kou Town Chemical Industrial Park, Rudong, Nantong, Jiangsu Patentee after: FINE-BLEND COMPATILIZER JIANGSU CO., LTD. Address before: No. 3078 Hu min Road, Minhang District, Shanghai Patentee before: Rizhisheng New Technology Development Co., Ltd., Shanghai |