CN118003514A - Melt impregnation system and method for printing continuous fiber resin matrix composite material - Google Patents
Melt impregnation system and method for printing continuous fiber resin matrix composite material Download PDFInfo
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- CN118003514A CN118003514A CN202410243280.2A CN202410243280A CN118003514A CN 118003514 A CN118003514 A CN 118003514A CN 202410243280 A CN202410243280 A CN 202410243280A CN 118003514 A CN118003514 A CN 118003514A
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- 239000000835 fiber Substances 0.000 title claims abstract description 115
- 238000005470 impregnation Methods 0.000 title claims abstract description 60
- 239000011347 resin Substances 0.000 title claims abstract description 56
- 229920005989 resin Polymers 0.000 title claims abstract description 56
- 239000011159 matrix material Substances 0.000 title claims abstract description 36
- 239000002131 composite material Substances 0.000 title claims abstract description 31
- 238000007639 printing Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000000155 melt Substances 0.000 claims abstract description 20
- 238000002844 melting Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 18
- 238000001816 cooling Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 13
- 239000000805 composite resin Substances 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 238000001125 extrusion Methods 0.000 claims description 35
- 238000005498 polishing Methods 0.000 claims description 16
- 238000003490 calendering Methods 0.000 claims description 15
- 239000002243 precursor Substances 0.000 claims description 8
- 238000007667 floating Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 abstract description 3
- 238000010923 batch production Methods 0.000 abstract 1
- 238000007598 dipping method Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 229920005992 thermoplastic resin Polymers 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000007781 pre-processing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The invention provides a melt impregnation system and a method for printing a continuous fiber resin matrix composite material, and belongs to the technical field of continuous fiber resin matrix composite materials. And carrying out yarn splitting and untwisting on the continuous fiber bundles through a yarn frame, a yarn guiding unit and a yarn splitting unit, obtaining continuous fiber resin matrix composite bundles through an impregnating unit, a glazing unit and a melting unit, and finally cooling and rolling the continuous fiber resin matrix composite bundles. The melt impregnation system and the method for printing the continuous fiber resin-based composite material realize the preparation of the continuous fiber resin-based composite material for printing, can realize batch production, and have the advantages of controllable fiber content, stable impregnation quality and good interfacial adhesion.
Description
Technical Field
The invention relates to the technical field of continuous fiber resin matrix composite materials, in particular to a melt impregnation system and a method for printing a continuous fiber resin matrix composite material.
Background
The continuous fiber resin-based composite material is prepared by fully soaking continuous fibers and thermoplastic resin in a resin matrix through processes such as melting and dipping, has a series of advantages of light weight, high strength, corrosion resistance and the like, is used as a good substitute for the traditional material, and is widely applied to the fields of aerospace, automobiles, ships, high-speed rails, sports equipment and the like. The traditional technology is that after fiber is spread, the fiber is sent into a resin melting die head, and a certain pressure is applied to uniformly disperse the resin into the fiber. However, in general, the continuous fibers have a small diameter, the resin has a large viscosity, the interface energy barrier between the two is high, and the resin is difficult to sufficiently infiltrate between the fibers.
In view of the above, the patent with publication number CN108099051a discloses an extrusion dipping device and a dipping method, by means of the corrugated dipping cavity designed by the extrusion dipping device, the dipping effect of the continuous fiber band can be uniform, and meanwhile, broken fibers can be brought out of the dipping area, so that the stability and the production efficiency of production are improved; however, the structure and operation of the extrusion and impregnation equipment are relatively complex, and continuous fibers are easy to break during impregnation, and the risk of fiber blockage exists. In addition, the invention patent with publication number CN201910691735.6 discloses an impregnating device provided with a pre-impregnating cavity, a longitudinal impregnating cavity and a final impregnating cavity, so that carbon fibers are firstly impregnated in a die area with high viscosity, then are impregnated in a die area with low viscosity, the degree of impregnation is improved, the impregnation thoroughness is ensured, and the problem of mutual pollution of melt in areas with different viscosities possibly exists.
Disclosure of Invention
In order to solve the problems, the invention discloses a melt impregnation system and a method for printing a continuous fiber resin matrix composite material, which realize the preparation of the continuous fiber resin matrix composite material for printing, can realize mass production, and the obtained continuous fiber resin matrix composite material has the advantages of controllable fiber content, stable impregnation quality and good interfacial adhesion.
In order to achieve the above object, the present invention provides the following solutions: the utility model provides a continuous fiber resin matrix combined material prints and uses melting impregnation system, includes creel, seal wire unit, branch silk unit, impregnating unit, glazing unit, melting unit and the cooling unit that set gradually that connect, the impregnating unit includes extrudes the impregnating unit, extrude the communicating connection of the extruding unit that the impregnating unit set up with the top.
Preferably, the structure of the extrusion unit is a screw extruder, a resin matrix is placed in the screw extruder, and an inner cavity of the screw extruder is communicated with the extrusion impregnating assembly.
Preferably, the impregnation unit further comprises a prepreg assembly and a calender assembly, the prepreg assembly being disposed at one end of the extrusion impregnation assembly, and the calender assembly being disposed at the other end of the extrusion impregnation assembly.
Preferably, the calendaring assembly is composed of a plurality of parallel flattening dipping rollers, and the intervals among the flattening dipping rollers are arranged oppositely according to the width of the continuous fiber bundle.
Preferably, the yarn guiding unit is arranged at one side of the yarn frame, a yarn guiding hole is arranged in the middle of the yarn guiding unit, and the position of the yarn guiding hole corresponds to the center position of the yarn frame.
Preferably, the yarn dividing unit is arranged at one side of the yarn guiding unit and consists of a plurality of yarn dividing rollers and floating rollers, and one floating roller is arranged above each two yarn dividing rollers.
Preferably, the glazing unit is disposed on one side of the dipping unit, the glazing unit is composed of a plurality of pre-glazing components and glazing components, one side of the pre-glazing components is disposed corresponding to the dipping unit, and the other side of the pre-glazing components is disposed corresponding to the glazing components.
Preferably, the polishing component comprises a plurality of groups of polishing rollers which are parallel to each other from top to bottom, one side of the polishing component is arranged corresponding to one side of the melting unit, and the other side of the melting unit is arranged corresponding to the cooling unit.
The invention also provides a method of the melt impregnation system for printing the continuous fiber resin matrix composite material, which comprises the following steps:
Leading out continuous fiber precursors from the creel, leading the continuous fiber precursors into the impregnating unit through the yarn guiding unit and the yarn dividing unit, and carrying out pretreatment through the pre-soaking component to obtain continuous fiber bundles;
extruding resin into the extrusion impregnating component by using the extrusion unit, so that the molten resin is uniformly coated on the outer surface of the continuous fiber bundles, and performing wire extrusion treatment by using the calendaring component to obtain a preliminary prepreg tape;
providing tension to the obtained preliminary prepreg tape through the polishing unit so as to ensure that fibers in the preliminary prepreg tape are in a stretched state, and then bundling the preliminary prepreg tape through the melting unit to obtain a continuous fiber resin composite material bundle;
The obtained continuous fiber-resin composite material bundle is subjected to a cooling treatment by a cooling unit, and then is subjected to a winding treatment.
The invention has the beneficial effects that:
(1) And carrying out yarn splitting and untwisting on the continuous fiber bundles through a yarn frame, a yarn guiding unit and a yarn splitting unit, obtaining continuous fiber resin matrix composite bundles through an impregnating unit, a glazing unit and a melting unit, and finally cooling and rolling the continuous fiber resin matrix composite bundles. The preparation of the continuous fiber resin matrix composite material for printing is realized, the mass production can be realized, and the prepared continuous fiber resin matrix composite material has the advantages of controllable fiber content, stable impregnation quality and good interface adhesion.
(2) In the melt impregnation system provided by the invention, the calendaring components are arranged up and down, the positions of the calendaring components can be adjusted according to the width of the continuous fiber bundles, so that the coating angle with the fiber bundles is changed, the impregnation effect is adjusted, the uniformity of resin distribution is ensured, the risk of fiber blockage is almost avoided by arranging the yarn guiding units and the yarn dividing units, and the problem of mutual pollution of melts in different viscosity areas is avoided by arranging the pre-impregnation components and the calendaring components.
(3) The continuous fiber precursor warp frame, the guide wire unit and the wire dividing unit are led into the impregnating unit, the continuous fiber tows are obtained by preprocessing the continuous fiber precursor warp frame, the guide wire unit and the wire dividing unit through the pre-impregnation assembly, resin is extruded through the extruder and coated on the outer surfaces of the continuous fiber tows, then the continuous fiber tows are subjected to rolling display treatment through the rolling assembly, in the process, larger pressure can be generated between the rolling assembly and the fiber tows, the pressure promotes resin melt to enter the fiber tows, and meanwhile, redundant resin melt can be scraped off, so that the longitudinal fiber content of the preliminary pre-impregnation belt is stable.
The calendering subassembly is arranged from top to bottom, and its position can be adjusted to this change with the cladding angle of fibre bundle, adjust the flooding effect, at this in-process, guaranteed the distribution homogeneity of resin, and through the setting of seal wire unit and branch silk unit, there is not the risk that the fibre is blockked up hardly, and through setting up prepreg assembly and calendering subassembly, can not have the regional fuse-element mutual pollution's of different viscosity problem more.
Drawings
FIG. 1 is a schematic flow chart of a melt impregnation system for printing a continuous fiber resin matrix composite material;
FIG. 2 is a schematic flow chart of a melt impregnation method for a continuous fiber resin matrix composite material.
Reference numerals illustrate:
1-creel, 2-godet unit, 21-godet hole, 3-godet unit, 31-godet roller, 32-dancer roller, 4-impregnation unit, 41-prepreg assembly, 42-extrusion impregnation assembly, 43-calendaring assembly, 5-extrusion unit, 6-glazing unit, 61-pre-glazing assembly, 62-glazing assembly, 7-melting unit, 8-cooling unit.
Detailed Description
The present invention is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the invention and not limiting the scope of the invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "inner" and "outer" refer to directions toward or away from, respectively, the geometric center of a particular component.
Example 1
As shown in fig. 1, the invention provides a melt impregnation system for printing a continuous fiber resin matrix composite, which comprises a creel 1, a yarn guiding unit 2, a yarn dividing unit 3, an impregnation unit 4, a glazing unit 6, a melting unit 7 and a cooling unit 8 which are sequentially connected, wherein the impregnation unit 4 comprises an extrusion impregnation assembly 42, and the extrusion impregnation assembly 42 is communicated with an extrusion unit 5 arranged above the extrusion impregnation assembly.
In this embodiment, the extruding unit 5 is a screw extruder, the inside of which is provided with a resin matrix, and the inner cavity of the screw extruder is communicated with the extrusion impregnating component 42, so that the thermoplastic resin is coated on the surface of the continuous fiber bundles from the extrusion impregnating component 42 through the extruder.
In the present embodiment, the impregnation unit 4 further includes a prepreg member 41 and a calender member 43, the prepreg member 41 being provided at one end of the extrusion impregnating member 42, and the calender member 43 being provided at the other end of the extrusion impregnating member 42. The impregnation rate of the melt-impregnated fibers at a given fiber bundle and resin condition by the calendaring assembly 43 is dependent on the impregnation pressure, which is determined by the extrusion speed and the impregnation time is determined by the drawing speed.
In this embodiment, the calendaring assembly 43 is composed of a plurality of parallel flattening and impregnating rollers, the intervals among the flattening and impregnating rollers are relatively set according to the width of the continuous fiber bundle, and a large pressure exists between the flattening rollers and the fiber bundle, so that the resin melt on the surface of the continuous fiber bundle can be promoted to permeate, and meanwhile, redundant resin melt in the fiber bundle can be scraped off, and the stability of the longitudinal fiber content is ensured. The positions of the flattening rollers are arranged in a certain mode, and the coating angle between the flattening rollers and the fiber bundles can be changed by adjusting the upper and lower positions of the flattening rollers, so that the dipping effect can be adjusted.
In the present embodiment, the yarn guiding unit 2 is disposed at one side of the creel 1, and a yarn guiding hole 21 is disposed at the middle thereof, and the position of the yarn guiding hole 21 corresponds to the center position of the creel 1 for guiding out the continuous fiber bundle filaments.
In this embodiment, the yarn dividing unit 3 is disposed at one side of the yarn guiding unit 2, and is composed of a plurality of yarn dividing rollers 31 and floating rollers 32, and one floating roller 32 is disposed above each of the two yarn dividing rollers 31. Under a certain pretension, the fiber bundle moves along the smooth cylindrical roller surface when passing through the filament dividing roller 31, so that a certain degree of dispersion is obtained, and the factors determining the filament dividing effect of the filament dividing roller 31 are pretension and friction surrounding angle between the fiber bundle and the roller. The dancer 32 can adjust the tension applied to the fiber bundles during the filament separation process to ensure uniform dispersion of the fiber bundles.
In this embodiment, the glazing unit 6 is disposed on one side of the dipping unit 4, the glazing unit 6 is composed of a plurality of pre-glazing assemblies 6261 and glazing assemblies 62, one side of the pre-glazing assemblies 6261 is disposed corresponding to the dipping unit 4, and the other side is disposed corresponding to the glazing assemblies 62. Wherein, the pre-polishing roller can rotate freely, avoid scraping resin on the surface of the continuous fiber bundle, and influence the fiber content and the surface smoothness. When the continuous fiber bundle passes through the pre-polishing roller, the continuous fiber bundle receives larger tension, so that the curled fibers in the continuous fiber bundle can be straightened, and the orientation degree of the fibers is improved. The polishing roller can generate larger pressure on the continuous fiber bundle, so that the surface of the continuous fiber bundle is smooth, and the fiber bundle is in a straightened state.
In this embodiment, the polishing component 62 is composed of several groups of polishing rollers parallel to each other from top to bottom, and one side of the polishing component 62 is disposed corresponding to one side of the melting unit 7, and the other side of the melting unit 7 is disposed corresponding to the cooling unit 8.
The working principle of the system is as follows: the rotating resistance of the creel 1 is regulated to ensure that the fiber bundles can obtain a certain pretension, the fiber bundles are dispersed when passing through the filament dividing roller 31 by a certain pretension, then the fiber bundles after dispersion are preheated by the impregnating unit 4, then the resin melt with a certain pressure and viscosity is coated by the extrusion impregnating component 42, then the fiber bundles are subjected to a polishing unit 6 and a melting unit 7 to obtain continuous fiber resin matrix composite bundles with smooth surfaces, and finally the continuous fiber resin matrix composite bundles are subjected to cooling and collection by the cooling unit 8 and the winding unit.
As shown in fig. 2, the invention also provides a method of a melt impregnation system for printing a continuous fiber resin matrix composite material, comprising the following steps:
Step 100, leading out continuous fiber precursor from the creel, leading the continuous fiber precursor into the impregnating unit through the yarn guiding unit and the yarn dividing unit, and carrying out pretreatment through the pre-impregnated component to obtain a continuous fiber bundle;
step 200, extruding resin into the extrusion impregnating component by using the extrusion unit, so that the molten resin is uniformly coated on the outer surface of the continuous fiber bundle, and performing wire extrusion treatment by using the calendaring component to obtain a preliminary prepreg tape;
Step 300, providing tension to the obtained preliminary prepreg tape through the polishing unit so as to ensure that the fibers in the preliminary prepreg tape are in a stretched state, and then performing bundling treatment on the preliminary prepreg tape through the melting unit to obtain a continuous fiber resin composite material bundle;
and 400, cooling the obtained continuous fiber resin composite material bundle by a cooling unit, and then rolling the continuous fiber resin composite material bundle.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features.
Claims (9)
1. The melt impregnation system for printing the continuous fiber resin matrix composite material is characterized by comprising a creel, a yarn guide unit, a yarn dividing unit, an impregnation unit, a glazing unit, a melting unit and a cooling unit which are sequentially connected, wherein the impregnation unit comprises an extrusion impregnation assembly, and the extrusion impregnation assembly is communicated and connected with an extrusion unit arranged above the extrusion impregnation assembly.
2. The melt impregnation system for printing the continuous fiber resin matrix composite material according to claim 1, wherein the extruding unit is a screw extruder, a resin matrix is placed in the screw extruder, and an inner cavity of the screw extruder is communicated with the extrusion impregnation assembly.
3. The melt impregnation system for printing a continuous fiber resin matrix composite according to claim 1, wherein said impregnation unit further comprises a prepreg assembly and a calendaring assembly, said prepreg assembly being disposed at one end of said extrusion impregnation assembly and said calendaring assembly being disposed at the other end of said extrusion impregnation assembly.
4. A melt impregnation system for printing a continuous fiber resin matrix composite according to claim 3, wherein said calendaring assembly is comprised of a plurality of flattened impregnation rollers parallel to each other, and wherein the spacing between said flattened impregnation rollers is arranged in opposition to the width of the continuous fiber bundle.
5. The melt impregnation system for printing the continuous fiber resin matrix composite according to claim 1, wherein the yarn guiding unit is arranged on one side of the creel, and a yarn guiding hole is arranged in the middle of the yarn guiding unit, and the position of the yarn guiding hole corresponds to the center position of the creel.
6. The melt impregnation system for printing the continuous fiber resin matrix composite according to claim 1, wherein the filament dividing unit is arranged on one side of the filament guiding unit and consists of a plurality of filament dividing rollers and floating rollers, and one floating roller is arranged above each two filament dividing rollers.
7. The melt impregnation system for printing the continuous fiber resin matrix composite according to claim 1, wherein the glazing unit is arranged on one side of the impregnation unit, the glazing unit is composed of a plurality of pre-glazing components and glazing components, one side of the pre-glazing components is arranged corresponding to the impregnation unit, and the other side of the pre-glazing components is arranged corresponding to the glazing components.
8. The melt impregnation system for printing a continuous fiber resin matrix composite according to claim 7, wherein the polishing assembly comprises a plurality of groups of polishing rollers parallel to each other from top to bottom, one side of the polishing assembly is arranged corresponding to one side of the melting unit, and the other side of the melting unit is arranged corresponding to the cooling unit.
9. A method of a melt impregnation system for printing a continuous fiber resin matrix composite material, which is characterized by comprising the following steps: the method comprises the following steps:
Step 100, leading out continuous fiber precursor from the creel, leading the continuous fiber precursor into the impregnating unit through the yarn guiding unit and the yarn dividing unit, and carrying out pretreatment through the pre-impregnated component to obtain a continuous fiber bundle;
step 200, extruding resin into the extrusion impregnating component by using the extrusion unit, so that the molten resin is uniformly coated on the outer surface of the continuous fiber bundle, and performing wire extrusion treatment by using the calendaring component to obtain a preliminary prepreg tape;
Step 300, providing tension to the obtained preliminary prepreg tape through the polishing unit so as to ensure that the fibers in the preliminary prepreg tape are in a stretched state, and then performing bundling treatment on the preliminary prepreg tape through the melting unit to obtain a continuous fiber resin composite material bundle;
and 400, cooling the obtained continuous fiber resin composite material bundle by a cooling unit, and then rolling the continuous fiber resin composite material bundle.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410243280.2A CN118003514A (en) | 2024-03-04 | 2024-03-04 | Melt impregnation system and method for printing continuous fiber resin matrix composite material |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202410243280.2A CN118003514A (en) | 2024-03-04 | 2024-03-04 | Melt impregnation system and method for printing continuous fiber resin matrix composite material |
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| CN118003514A true CN118003514A (en) | 2024-05-10 |
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| CN202410243280.2A Pending CN118003514A (en) | 2024-03-04 | 2024-03-04 | Melt impregnation system and method for printing continuous fiber resin matrix composite material |
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| Country | Link |
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| CN (1) | CN118003514A (en) |
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- 2024-03-04 CN CN202410243280.2A patent/CN118003514A/en active Pending
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