CN116038941A - Continuous fiber reinforced thermoplastic resin powder impregnating device - Google Patents
Continuous fiber reinforced thermoplastic resin powder impregnating device Download PDFInfo
- Publication number
- CN116038941A CN116038941A CN202211719166.XA CN202211719166A CN116038941A CN 116038941 A CN116038941 A CN 116038941A CN 202211719166 A CN202211719166 A CN 202211719166A CN 116038941 A CN116038941 A CN 116038941A
- Authority
- CN
- China
- Prior art keywords
- thermoplastic resin
- fiber
- box
- resin powder
- guiding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 229920005992 thermoplastic resin Polymers 0.000 title claims abstract description 92
- 239000000843 powder Substances 0.000 title claims abstract description 70
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 title claims abstract description 16
- 239000000835 fiber Substances 0.000 claims abstract description 165
- 238000007590 electrostatic spraying Methods 0.000 claims abstract description 53
- 238000003892 spreading Methods 0.000 claims abstract description 38
- 230000007480 spreading Effects 0.000 claims abstract description 38
- 238000005470 impregnation Methods 0.000 claims abstract description 34
- 238000000034 method Methods 0.000 claims abstract description 31
- 230000004048 modification Effects 0.000 claims abstract description 24
- 238000012986 modification Methods 0.000 claims abstract description 24
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims abstract description 22
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 14
- 238000004381 surface treatment Methods 0.000 claims abstract description 14
- 238000007731 hot pressing Methods 0.000 claims abstract description 11
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 claims description 29
- 238000009990 desizing Methods 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 26
- 238000001035 drying Methods 0.000 claims description 22
- 238000000227 grinding Methods 0.000 claims description 16
- 238000001816 cooling Methods 0.000 claims description 14
- 238000004513 sizing Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 238000005507 spraying Methods 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 10
- 238000011084 recovery Methods 0.000 claims description 8
- 239000007921 spray Substances 0.000 claims description 8
- 239000000805 composite resin Substances 0.000 claims description 7
- 239000000498 cooling water Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 239000004696 Poly ether ether ketone Substances 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 229920002530 polyetherether ketone Polymers 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 229920002292 Nylon 6 Polymers 0.000 claims description 2
- 239000004734 Polyphenylene sulfide Substances 0.000 claims description 2
- 229920000747 poly(lactic acid) Polymers 0.000 claims description 2
- 239000004626 polylactic acid Substances 0.000 claims description 2
- 229920000069 polyphenylene sulfide Polymers 0.000 claims description 2
- 238000000643 oven drying Methods 0.000 claims 2
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 53
- 239000004917 carbon fiber Substances 0.000 abstract description 53
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 48
- 229920005989 resin Polymers 0.000 abstract description 23
- 239000011347 resin Substances 0.000 abstract description 23
- 239000002131 composite material Substances 0.000 abstract description 14
- 238000002360 preparation method Methods 0.000 abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 239000004918 carbon fiber reinforced polymer Substances 0.000 description 8
- 238000002791 soaking Methods 0.000 description 8
- 238000007664 blowing Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000000748 compression moulding Methods 0.000 description 4
- 239000005543 nano-size silicon particle Substances 0.000 description 4
- 235000012239 silicon dioxide Nutrition 0.000 description 4
- 238000004804 winding Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 230000008034 disappearance Effects 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000002604 ultrasonography Methods 0.000 description 2
- 229920002748 Basalt fiber Polymers 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229920002302 Nylon 6,6 Polymers 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 229920006231 aramid fiber Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000739 chaotic effect Effects 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003733 fiber-reinforced composite Substances 0.000 description 1
- 229910021389 graphene Inorganic materials 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000088 plastic resin Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000002277 temperature effect Effects 0.000 description 1
- 238000009210 therapy by ultrasound Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B15/00—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00
- B29B15/08—Pretreatment of the material to be shaped, not covered by groups B29B7/00 - B29B13/00 of reinforcements or fillers
- B29B15/10—Coating or impregnating independently of the moulding or shaping step
- B29B15/12—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length
- B29B15/14—Coating or impregnating independently of the moulding or shaping step of reinforcements of indefinite length of filaments or wires
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention provides a continuous fiber reinforced thermoplastic resin powder impregnation device, an impregnation method and a composite material, relates to the field of composite materials, and aims to solve the technical problem that the resin content in a continuous carbon fiber prepreg preparation method is difficult to control. The impregnating device comprises a yarn spreading device, a surface treatment device, a surface modification device, an electrostatic spraying device and a hot pressing device for solidifying thermoplastic resin on the surface of the fiber, which are sequentially arranged; the electrostatic spraying device comprises an electrostatic spraying gun, a second ultrasonic device and a guiding device, wherein the guiding device comprises a guiding licker-in, and the guiding licker-in is matched with the second ultrasonic device to open the tension of the solution on the surface of the fiber bundle and generate gaps among the fibers of the fiber bundle; the surface modification device is provided with a silane coupling agent and nano silica sol, and is used for improving the interfacial bonding property of the fiber surface and thermoplastic resin. The surface treatment device comprises a first ultrasonic device which is used for fully impregnating the fiber bundles with the acetone solution and spreading the fibers.
Description
Technical Field
The invention relates to the field of composite materials, in particular to a continuous fiber reinforced thermoplastic resin powder impregnation device, an impregnation method and a composite material.
Background
In the preparation process of the continuous carbon fiber reinforced thermoplastic composite material, the melt viscosity of the thermoplastic resin is generally high, so that the carbon fiber is difficult to obtain good impregnation.
The existing powder impregnation technology is used for preparing continuous fiber reinforced composite materials, and the method comprises a wet method and a dry method. The wet method powder is used for preparing a suspension from resin powder and a volatile solvent, fibers are adhered to the surfaces of the fibers and between fiber bundles through the suspension, and the prepreg is obtained through the processes of solvent removal and melting and re-impregnation, but the resin content is not easy to control, the powder is unevenly distributed in the suspension, a liquid medium and a surfactant are difficult to completely remove, and the interface bonding property is poor. The dry powder process requires that the fibers must be conductive, otherwise the fiber bundles are not adsorbed with the resin powder or easily fall off, resulting in difficult control of the resin content, and the resin powder can only be impregnated to the surfaces of the fiber bundles and cannot be impregnated between the fiber bundles.
Disclosure of Invention
The invention aims to provide a continuous fiber reinforced thermoplastic resin powder impregnation device, an impregnation method and a composite material, which are used for solving the technical problem that the resin content is difficult to control in a continuous carbon fiber prepreg preparation method.
In order to achieve the above object, the present invention provides the following technical solutions:
the continuous fiber reinforced thermoplastic resin powder impregnating device provided by the embodiment of the invention comprises a yarn spreading device, a surface treatment device, a surface modification device, an electrostatic spraying device and a hot pressing device for solidifying the thermoplastic resin on the surface of the fiber, which are sequentially arranged;
the yarn spreading device comprises a high-temperature thermal grinding box and an air flow yarn spreading device, wherein the temperature of the high-temperature thermal grinding box is 300-500 ℃, the high-temperature thermal grinding box is used for removing sizing agent on the surface of the fiber and spreading the fiber bundle, and the air flow yarn spreading device spreads the fiber bundle to be thin under the action of air flow;
the surface treatment device comprises a desizing and impregnating box, a first ultrasonic device and a drying box, wherein the drying box is used for drying the fibers from the desizing and impregnating box, the solution of the desizing and impregnating box is acetone, and the first ultrasonic device arranged in the desizing and impregnating box is used for fully impregnating the fiber bundles and spreading the fibers;
the surface modification device is provided with a mixed solution of a silane coupling agent and nano silica sol, and the mixed solution is used for improving the interface bonding property of the fiber surface and the thermoplastic resin;
the electrostatic spraying device comprises an electrostatic spraying gun, a second ultrasonic device and a guiding device, wherein the guiding device comprises at least one guiding roller and a guiding licker-in arranged in front of the guiding roller along the movement direction of the fibers, the second ultrasonic device is arranged inside the guiding licker-in, a plurality of thorns which are uniformly distributed and protrude from the surface of the guiding licker-in are arranged on the guiding licker-in, and the guiding licker-in is matched with the second ultrasonic device to open the tension of the solution on the surface of the fiber bundle and generate gaps among the fibers of the fiber bundle;
the electrostatic spraying gun is arranged behind the second ultrasonic device and is used for spraying the thermoplastic resin powder on the surface of the fiber, and the traction speed of the fiber is 2-4 m/min;
the hot pressing device comprises a first cylinder roller, a second cylinder roller and a high-temperature heating box arranged between the first cylinder roller and the second cylinder roller, wherein the temperature of the high-temperature heating box is 200-400 ℃;
the first cylinder roller is used for pre-pressing the thermoplastic resin adhered to the surface of the fiber, the high-temperature heating box is used for melting the thermoplastic resin on the surface of the fiber, and the second cylinder roller is used for uniformly solidifying the thermoplastic resin on the surface of the fiber bundle under pressure.
Compared with the prior art, the continuous fiber reinforced thermoplastic resin powder impregnation device has the following advantages:
the invention provides a continuous fiber reinforced thermoplastic resin powder impregnating device which comprises a yarn spreading device, a surface treatment device, a surface modification device, an electrostatic spraying device and a hot pressing device for solidifying thermoplastic resin on the surface of a fiber, wherein the yarn spreading device, the surface treatment device, the surface modification device and the electrostatic spraying device are sequentially arranged; the surface modification device is provided with a silane coupling agent and nano silica sol, so that the interfacial bonding property of the fiber surface and thermoplastic resin is improved, and the surface modification device and the thermoplastic resin have good bonding property. The modified fiber surface is wet, when entering an electrostatic spraying device for spraying, the attraction of positive and negative charges can be increased to enable resin powder to be uniformly immersed between fiber bundles and cover the surface, and the resin powder cannot fall off due to static disappearance in the process of going to the next working procedure, so that the fiber reinforced thermoplastic resin composite material with excellent performance is prepared. Therefore, even if the fiber does not have conductivity, the impregnating device provided by the embodiment of the invention can uniformly adsorb resin powder, is not easy to fall off, and can well control the resin content.
In order to enable resin powder to be immersed between fiber bundles during electrostatic spraying, the resin powder firstly passes through a guide licker-in when entering an electrostatic spraying device, wherein a second ultrasonic device is further arranged inside the guide licker-in, the guide licker-in is provided with a plurality of thorns which are uniformly distributed and protrude on the surface of the guide licker-in, the licker-in divides the fiber bundles into small strands, gaps are reserved between each strand of the fiber bundles to increase powder impregnation, ultrasonic waves of the second ultrasonic device act on the licker-in, the energy loss of the ultrasonic waves transmitted between solids is small, and vibration can remove the tension of a fiber surface solution and promote the resin powder to enter between carbon fiber bundles. Whereby the stabs of the guide spike roller cooperate with the ultrasonic action of the second ultrasonic device to open the tension of the solution on the surface of the fiber bundle and create gaps between the fibers of the fiber bundle, so that the resin powder is impregnated not only on the surface of the fiber bundle but also between the fiber bundles. The resin content is controllable and is uniformly adsorbed on the fiber bundles. In the electrostatic spraying device, the traction speed of the fiber bundles is 2-4m/min, and in the speed range, the resin spraying is more uniform, and the resin content is easy to control.
And (3) the fiber bundle subjected to electrostatic spraying passes through a first cylinder roller, a high-temperature heating box and a second cylinder roller, wherein the first cylinder roller pre-presses the thermoplastic resin adhered to the surface of the fiber to prevent the resin powder from falling off in the subsequent process, then the thermoplastic resin adsorbed on the surface of the fiber is melted in the high-temperature heating box at 200-400 ℃ to bond the thermoplastic resin and the thermoplastic resin together, the thermoplastic resin is pressurized through the second cylinder roller, and the thermoplastic resin is uniformly solidified on the surface of the fiber bundle to form the fiber reinforced thermoplastic resin prepreg with good interface bonding.
Further, the device of the embodiment of the invention also comprises a yarn spreading device, wherein the yarn spreading device comprises a high-temperature hot-grinding box and an air-flow yarn spreading device, the high temperature hot-grinding box is at 300-500 ℃, optionally at 350-450 ℃, removes the sizing agent on the surface of the fiber and widens the fiber bundle, the fiber bundles are thinned through the airflow action by the airflow filament spreading device, so that a foundation is provided for the spraying of the subsequent process more uniformly, and the arrangement of the high-temperature heat curing box and the airflow filament spreading device is also beneficial to the surface treatment of the subsequent fibers. The surface treatment device comprises a desizing and impregnating box, a first ultrasonic device and a drying box for drying the fibers from the desizing and impregnating box, wherein the solution of the desizing and impregnating box is acetone, the first ultrasonic device arranged in the desizing and impregnating box is used for fully impregnating fiber bundles and spreading fibers, and the desizing and impregnating box is used for further removing the slurry and impurities.
Another object of the present invention is to provide a continuous fiber-reinforced thermoplastic resin powder impregnation method using the above thermoplastic resin powder impregnation apparatus, the impregnation method comprising:
removing sizing on the surface of the fiber by using high temperature and air spreading, and widening and thinning the fiber bundle;
ultrasonically removing the slurry and impurities in an acetone solution;
modifying the surface of the fiber bundle by using a silane coupling agent and nano silica sol;
opening the surface solution tension of the fiber bundles by using a licker-in and ultrasonic action and enabling gaps to be formed among the fiber bundles;
electrostatically spraying a thermoplastic resin powder onto the wetted fiber bundles;
the fiber bundle to which the thermoplastic resin powder is adhered is subjected to hot pressing so that the thermoplastic resin is cured at the fiber bundle.
Compared with the prior art, the continuous fiber reinforced thermoplastic resin powder impregnation method has the advantages which are the same as those of the continuous fiber reinforced thermoplastic resin powder impregnation device, and the description is omitted here.
The invention also provides a fiber reinforced thermoplastic resin composite material prepared by the impregnation method.
Compared with the prior art, the fiber reinforced thermoplastic resin composite material has the same advantages as those of the continuous fiber reinforced thermoplastic resin powder impregnation method, and the description is omitted here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention.
Fig. 1 is a schematic view of an impregnating apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic view of a surface treatment apparatus according to an embodiment of the present invention.
Fig. 3 is a schematic view of an electrostatic spraying device according to an embodiment of the present invention.
Reference numerals: 1. a creel; 2. high temperature grinding box; 3. an air flow filament spreading device; 4. removing pulp and dipping the box; 5. a first ultrasound device; 6. a drying box; 7. a surface modifying device; 8. an electrostatic spraying device; 9. an electrostatic spray gun; 10. a second ultrasound device; 11. guiding the licker-in; 13. A powder recovery device; 14. a first cylinder roller; 15. a high temperature heating box; 16. a second cylinder roller; 17. a cooling roller; 18. winding; 19-recovery box.
Detailed Description
The present invention will be described in further detail with reference to the drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the substances, and not restrictive of the invention. It should be further noted that, for convenience of description, only the portions related to the present invention are shown in the drawings.
In addition, the embodiments of the present invention and the features of the embodiments may be combined with each other without collision. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It should be noted that the fibers in the embodiment of the present invention include various fibers used in composite materials, such as high-strength polyethylene, aramid fiber, carbon fiber, graphene fiber, basalt fiber, and thermoplastic resin powder including but not limited to one of nylon 6, polyetheretherketone, polypropylene, polylactic acid, and polyphenylene sulfide, and in order to uniformly and controllably adsorb the thermoplastic resin powder to the surface of the fibers, the particle size of the thermoplastic resin powder is 100 mesh to 200 mesh, alternatively 130 mesh to 190 mesh, and further alternatively 140 mesh to 170 mesh. The impregnation method of the invention is not only applicable to conductive fibers, but also to resin prepregs of non-conductive fibers.
Referring to fig. 1 and 3, a continuous fiber reinforced thermoplastic resin powder impregnating apparatus includes a yarn spreading device, a surface treatment device, a surface modifying device 7, an electrostatic spraying device 8, and a hot pressing device for curing thermoplastic resin on the surface of the fiber, which are sequentially arranged;
the yarn spreading device comprises a high-temperature hot rolling box 2 and an air flow yarn spreading device 3, wherein the temperature of the high Wen Renian box 2 is 300-500 ℃, the high Wen Renian box 2 is used for removing sizing agent on the surface of fibers and spreading fiber bundles, and the air flow yarn spreading device 3 spreads the fiber bundles to be thin under the action of air flow;
the surface treatment device comprises a desizing and impregnating box 4, a first ultrasonic device 5 and a drying box 6, wherein the drying box 6 is used for drying fibers from the desizing and impregnating box 4, the solution of the desizing and impregnating box 4 is acetone, and the first ultrasonic device 5 arranged in the desizing and impregnating box 4 is used for fully impregnating fiber bundles and spreading the fibers;
the surface modification device 7 is provided with a mixed solution of a silane coupling agent and nano silica sol, and the mixed solution is used for improving the interface bonding property of the fiber surface and thermoplastic resin;
the electrostatic spraying device 8 comprises an electrostatic spraying gun 9, a second ultrasonic device 10 and a guiding device, wherein the guiding device comprises at least one guiding roller and a guiding licker-in 11 arranged in front of the guiding roller along the fiber movement direction, the second ultrasonic device 10 is further arranged in the guiding licker-in 11, a plurality of thorns uniformly distributed and protruding on the surface of the guiding licker-in 11 are arranged on the guiding licker-in 11, and the guiding licker-in 11 and the second ultrasonic device 10 are mutually matched for opening the tension of the fiber bundle surface solution and generating gaps among the fibers of the fiber bundle;
the electrostatic spraying gun 9 is arranged behind the second ultrasonic device 10, and the electrostatic spraying gun 9 is used for spraying thermoplastic resin powder on the surface of the fiber, and the traction speed of the fiber is 2-4 m/min;
the hot press device comprises a first cylinder roller 14, a second cylinder roller 16 and a high-temperature heating box 15 arranged between the first cylinder roller 14 and the second cylinder roller 16, wherein the temperature of the high-temperature heating box 15 is 200-400 ℃, and optionally 300-350 ℃;
the first cylinder roller 14 is used for pre-pressing the thermoplastic resin adhered to the surface of the fiber, the high-temperature heating box 15 is used for melting the thermoplastic resin on the surface of the fiber, and the second cylinder roller 16 is used for uniformly solidifying the thermoplastic resin on the surface of the fiber bundle under pressure.
In actual use, taking carbon fiber as an example, after the continuous carbon fiber tows are unreeled by the creel 1, the continuous carbon fiber tows enter a yarn spreading device, a sizing agent on the surface of the carbon fiber is removed and the widening effect is achieved under the high temperature effect of the high-temperature hot rolling box 2 in the yarn spreading device, and then the carbon fiber tows are widened and thinned through the air flow yarn spreading device 3 under the air flow yarn spreading effect, so that a plurality of carbon fiber tows are changed into tightly arranged carbon fiber tows; the carbon fiber bundles enter a desizing and impregnating box 4 in the surface treatment device again, the desizing and impregnating box 4 is provided with an acetone solution and a first ultrasonic device 5, sizing agents and surface impurities of the carbon fibers are removed under the combined action of acetone and ultrasonic waves, a certain fiber spreading effect is achieved, the removal of the sizing agents and the impurities is enabled to be more thorough, a certain foundation is provided for the subsequent uniform spraying, and then the carbon fiber bundles enter a drying box for drying, so that the solution on the fibers is removed; the dried carbon fiber bundles enter a surface modification device 7, after the silane coupling agent and the nano silica sol in the surface modification device 7 impregnate the fibers, the carbon fiber bundles and the thermoplastic resin can be well combined at an interface, and then enter a pressure roller in a modification solution recovery device to extrude redundant modification solution, and the redundant modification solution is recovered by a recovery box 19 arranged below the pressure roller; the wet carbon fiber bundles enter an electrostatic spraying device 8, a second ultrasonic device 10 is arranged in the electrostatic spraying device to guide a licker-in 11, the licker-in 11 is pierced, under the combined action of ultrasonic waves of the second ultrasonic device 10, the tension of a fiber bundle surface solution is opened, gaps are generated among fibers of the fiber bundles, thermoplastic resin powder is absorbed into an electrostatic spraying gun 9 through vacuum, so that the thermoplastic resin powder is negatively charged and sprayed to the upper surface and the lower surface of the positively charged carbon fiber bundles under the action of air pressure, the carbon fiber bundles are wet to greatly increase the attraction of charges, the interaction of the carbon fiber bundles enables the thermoplastic resin powder to enter the inside and the surface of the carbon fiber bundles, the traction speed is 2-4m/min, and in order to ensure that the carbon fibers are positively charged, a conductive wire connected with ground is further arranged at an inlet of the electrostatic spraying device 8; the carbon fiber bundles adhered with the thermoplastic resin powder are solidified on the carbon fiber bundles through a hot pressing device, specifically, the plastic resin powder adhered on the surfaces of the carbon fiber bundles is pressed into the fiber bundles through the prepressing of a first cylinder roller 14, the thermoplastic resin is melted through a high-temperature heating box 15, the surfaces of the carbon fiber bundles are uniformly pressurized through a second cylinder roller 16, the carbon fiber bundles enter a cooling roller 17, the carbon fiber bundles are fully cooled and smooth, finally, the rolled prepreg tape is cut into strips after being wound on a rolling 18, and the strips are put into a die to be subjected to sheet (chaotic accumulation) compression molding, so that the carbon fiber reinforced thermoplastic composite material is obtained.
In some embodiments, referring to fig. 2, the desizing and soaking box 4 is internally provided with 10-12 groups of guide rollers with relative deviation, and each three groups of guide rollers are provided with a group of electric rollers to provide power, so that the time of soaking and ultrasonic treatment of carbon fiber tows in acetone solution can be prolonged, the sizing agent and impurities can be removed more fully, and the fiber spreading function can be played fully.
In some embodiments, referring to fig. 1, a plurality of L-shaped pressure rollers are disposed in the high-temperature hot rolling box 2, and the length of the pressure rollers is 3-5 m, the temperature is 300-500 ℃, and optionally 350-450 ℃.
In some embodiments, referring to fig. 1, the filament stretching mode of the airflow filament stretching device 3 is to blow air, the air blowing speed is 7-10m/s, and the airflow nozzle is located above the carbon fiber bundles, so as to achieve the purpose of fully stretching the filaments.
As an example, referring to fig. 3, in the above-mentioned electrostatic spraying device 8, except the foremost guiding licker-in 11, the guiding rollers at the rear are all smooth-surfaced guiding rollers, the electrostatic spraying guns 9 are one or more groups, each group of electrostatic spraying guns 9 is two, each group of electrostatic spraying guns 9 is uniformly distributed along the moving direction of the fiber bundle, two of the electrostatic spraying guns 9 in each group are symmetrically arranged, and the two electrostatic spraying guns 9 are respectively arranged above and below the fiber bundle, so as to achieve the purpose of uniform spraying, and the electrostatic spraying guns 9 are optionally distributed in 4-6 pairs up and down symmetrically. The distance between the electrostatic spraying gun 9 and the fiber is 200-300 mm, the flow rate of the electrostatic spraying gun 9 is 30-150 sample/min, and the distance and the flow rate enable the spraying to be more uniform and not easy to accumulate. It will be appreciated that the electrostatic spraying device 8 further includes a powder recovery device 13 provided below for collecting the thermoplastic resin powder not adhered to the fibers for reuse.
Illustratively, the mass ratio of the nanosilica sol to the silane coupling agent is 10: (2-6), optionally 10: (2-5), optionally 10: (3-4). Within this ratio range, the modified carbon fiber has good interfacial bonding with the thermoplastic resin.
Illustratively, the temperature of the oven 6 is 300-500 ℃, optionally 350-450 ℃, and the length of the oven 6 is 3-5 m; the length of the high-temperature heating box 15 is 5 m-6 m; the length of the high-temperature heating box 15 and the length direction of the drying box 6 are as follows: the direction of movement of the fiber bundles.
In some embodiments, the thermoplastic resin powder impregnation apparatus further includes at least one pair of cooling rolls 17 disposed after the second cylinder roll 16, illustratively a pair of cooling rolls 17 having a diameter of 300mm, each pair of cooling rolls 17 for cooling at least the upper and lower surfaces of the fiber bundle, cooling water is used inside the cooling rolls 17, and the temperature of the cooling water is 5 to 20 ℃.
According to another object of the present invention, there is also provided a continuous fiber-reinforced thermoplastic resin powder impregnation method, using the above thermoplastic resin powder impregnation apparatus, the impregnation method comprising:
removing sizing on the surface of the fiber by using high temperature and air spreading, and widening thinned fiber bundles; ultrasonically and further removing the slurry and impurities in an acetone solution; the surface of the fiber bundle is modified by using a silane coupling agent and nano silicon dioxide sol, so that the fiber has good bonding property with a thermoplastic resin interface; opening the surface solution tension of the fiber bundles by using a licker-in and ultrasonic action and enabling gaps to be formed among the fiber bundles; the wet fiber bundles are subjected to electrostatic spraying with thermoplastic resin powder, and the wet fiber bundles are wet, so that the impregnation method not only comprises conductive fibers, but also comprises nonconductive fibers, and meanwhile, the wet carbon fiber bundles can increase the attraction of positive and negative charges to enable the resin powder to be uniformly impregnated between the carbon fiber bundles and cover the surface, and the resin powder cannot fall off due to static disappearance in the process of going to the next working procedure, so that the carbon fiber reinforced thermoplastic resin composite material with excellent performance is achieved; the fiber bundle to which the thermoplastic resin powder is adhered is subjected to hot pressing so that the thermoplastic resin is cured in the fiber bundle. The thermoplastic resin on the surface of the fiber bundles is pressed between the fiber bundles by the pressure of the first cylinder roller, and then is uniformly distributed after being melted at high temperature, and the bonding force between the thermoplastic resin and the surface of the fiber bundles is stronger by the pressure of the second cylinder roller.
The above impregnation methods are varied and several specific impregnation methods are given below:
example 1
The continuous carbon fiber reinforced thermoplastic resin powder impregnation method provided in the embodiment comprises the following steps:
s100: the carbon fiber bundles are passed through a high-temperature thermal grinding box with a plurality of L-shaped pressure rollers, the length of the high-temperature thermal grinding box is 5m, the temperature is 400 ℃, the sizing agent is removed, the bundles are stretched, and then the carbon fiber bundles are stretched and thinned by a gas flow filament stretching device in a filament stretching mode of blowing, wherein the gas flow speed of the blowing is 9 m/s.
S200: the carbon fiber bundles of the spread fibers enter a desizing and soaking box, a first ultrasonic device and 10 pairs of guide rollers with relative deviation are arranged in the desizing and soaking box, and the distance between each group of guide rollers is 10cm; then the mixture enters a drying box, the length of the drying box is 5m, and the temperature is 300 ℃;
s300: then the fiber bundle enters a surface modification device, is modified by a silane coupling agent and nano silicon dioxide sol, enters a pressure roller, and extrudes redundant modification solution of the fiber bundle;
s400: the wet carbon fiber tows enter an electrostatic spraying device, 4 electrostatic spraying guns are used through a guide licker-in internally provided with a second ultrasonic device, the distance between the electrostatic spraying guns and the carbon fibers is 200mm, the flow rate of the electrostatic spraying guns is 100 mm/min, the thermoplastic resin powder is nylon 66, and the particle size of the powder is 200 meshes;
s500: the first cylinder roller is prepressed and then enters a high-temperature heating box, the length of the high-temperature heating box is 5 meters, two pairs of pressure rollers are arranged, the heating temperature is 275 ℃, and the second cylinder roller is rolled;
s600: then the carbon fiber bundles are fully cooled and the surface is smooth by a cooling roller with the diameter of 300mm, the temperature of cooling water is 10 ℃;
s700: winding, namely cutting the wound prepreg tape into strips;
s800: and (3) placing the cut prepreg strips into a die for sheet (messy stacked together) compression molding to obtain the carbon fiber reinforced thermoplastic composite material.
Example 2
S100: the carbon fiber bundles are passed through a high-temperature thermal grinding box with a plurality of L-shaped pressure rollers, the length of the high-temperature thermal grinding box is 5m, the temperature is 400 ℃, the sizing agent is removed, the bundles are stretched, and then the carbon fiber bundles are stretched and thinned by a gas flow filament stretching device in a filament stretching mode of blowing, wherein the gas flow speed of the blowing is 9 m/s.
S200: the carbon fiber bundles of the spread fibers enter a desizing and soaking box, a first ultrasonic device and 10 pairs of guide rollers with relative deviation are arranged in the desizing and soaking box, and the distance between each group of guide rollers is 10cm; then the mixture enters a drying box, the length of the drying box is 5m, and the temperature is 300 ℃;
s300: then the fiber bundle enters a surface modification device, is modified by a silane coupling agent and nano silicon dioxide sol, enters a pressure roller, and extrudes redundant modification solution of the fiber bundle;
s400: the wet carbon fiber tows enter an electrostatic spraying device, 4 electrostatic spraying guns are used through a guide licker-in internally provided with a second ultrasonic device, the distance between the electrostatic spraying guns and the carbon fibers is 200mm, the flow rate of the electrostatic spraying guns is 100 ℃ per minute, the thermoplastic resin powder is polyether-ether-ketone, and the particle size of the powder is 200 meshes;
s500: the first cylinder roller is prepressed and then enters a high-temperature heating box, the length of the high-temperature heating box is 5 meters, two pairs of pressure rollers are arranged, the heating temperature is 395 ℃, and the second cylinder roller is rolled;
s600: then the carbon fiber bundles are fully cooled and the surface is smooth by a cooling roller with the diameter of 300mm, the temperature of cooling water is 10 ℃;
s700: winding, namely cutting the wound prepreg tape into strips;
s800: and (3) placing the cut prepreg strips into a die for sheet (messy stacked together) compression molding to obtain the carbon fiber reinforced thermoplastic composite material. .
Example 3
S100: the carbon fiber bundles are passed through a high-temperature thermal grinding box with a plurality of L-shaped pressure rollers, the length of the high-temperature thermal grinding box is 5m, the temperature is 400 ℃, the sizing agent is removed, the bundles are stretched, and then the carbon fiber bundles are stretched and thinned by a gas flow filament stretching device in a filament stretching mode of blowing, wherein the gas flow speed of the blowing is 9 m/s.
S200: the carbon fiber bundles of the spread fibers enter a desizing and soaking box, a first ultrasonic device and 10 pairs of guide rollers with relative deviation are arranged in the desizing and soaking box, and the distance between each group of guide rollers is 10cm; then the mixture enters a drying box, the length of the drying box is 5m, and the temperature is 300 ℃;
s300: then the fiber bundle enters a surface modification device, is modified by a silane coupling agent and nano silicon dioxide sol, enters a pressure roller, and extrudes redundant modification solution of the fiber bundle;
s400: the wet carbon fiber tows enter an electrostatic spraying device, 4 electrostatic spraying guns are used through a guide licker-in internally provided with a second ultrasonic device, the distance between the electrostatic spraying guns and the carbon fibers is 200mm, the flow rate of the electrostatic spraying guns is 100 g/min, the thermoplastic resin powder is polypropylene, and the powder particle size is 200 meshes;
s500: the first cylinder roller is prepressed and then enters a high-temperature heating box, the length of the high-temperature heating box is 5 meters, two pairs of pressure rollers are arranged, the heating temperature is 210 ℃, and the second cylinder roller is rolled;
s600: then the carbon fiber bundles are fully cooled and the surface is smooth by a cooling roller with the diameter of 300mm, the temperature of cooling water is 10 ℃;
s700: winding, namely cutting the wound prepreg tape into strips;
s800: and (3) placing the cut prepreg strips into a die for sheet (messy stacked together) compression molding to obtain the carbon fiber reinforced thermoplastic composite material.
The composite properties of several examples are given below, see table 1.
Table 1 composite properties
As shown in Table 1, the tensile strength, flexural strength and unnotched impact strength of examples 1-3 were all very high, while the mass content of carbon fibers was less than 50%, i.e., the resin content was more than 50%. In particular, the carbon fiber-reinforced thermoplastic resin composite material of example 2 has a tensile strength of 820MPa, a flexural strength of 310MPa, and an impact strength of 370 KJ/m 2 And the mass content of the carbon fiber is 45.7%, which fully shows that the thermoplastic resin is fully impregnated on the surface of the fiber bundles and between the fibers of the fiber bundles, thereby obtaining the composite material with excellent mechanical properties.
According to another object of the present invention, there is also provided a fiber-reinforced thermoplastic resin composite material prepared by the above impregnation method.
In the description of the present specification, reference to the terms "one embodiment/manner," "some embodiments/manner," "example," "specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment/manner or example is included in at least one embodiment/manner or example of the present application. In this specification, the schematic representations of the above terms are not necessarily for the same embodiment/manner or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments/modes or examples. Furthermore, the various embodiments/modes or examples described in this specification and the features of the various embodiments/modes or examples can be combined and combined by persons skilled in the art without contradiction.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
It will be appreciated by persons skilled in the art that the above embodiments are provided for clarity of illustration only and are not intended to limit the scope of the invention. Other variations or modifications will be apparent to persons skilled in the art from the foregoing disclosure, and such variations or modifications are intended to be within the scope of the present invention.
Claims (10)
1. The continuous fiber reinforced thermoplastic resin powder impregnating device is characterized by comprising a yarn spreading device, a surface treatment device, a surface modification device, an electrostatic spraying device and a hot pressing device for solidifying the thermoplastic resin on the surface of the fiber, which are sequentially arranged;
the yarn spreading device comprises a high-temperature thermal grinding box and an air flow yarn spreading device, wherein the temperature of the high-temperature thermal grinding box is 300-500 ℃, the high-temperature thermal grinding box is used for removing sizing agent on the surface of the fiber and spreading the fiber bundle, and the air flow yarn spreading device spreads the fiber bundle to be thin under the action of air flow;
the surface treatment device comprises a desizing and impregnating box, a first ultrasonic device and a drying box, wherein the drying box is used for drying the fibers from the desizing and impregnating box, the solution of the desizing and impregnating box is acetone, and the first ultrasonic device arranged in the desizing and impregnating box is used for fully impregnating the fiber bundles and spreading the fibers;
the surface modification device is provided with a mixed solution of a silane coupling agent and nano silica sol, and the mixed solution is used for improving the interface bonding property of the fiber surface and the thermoplastic resin;
the electrostatic spraying device comprises an electrostatic spraying gun, a second ultrasonic device and a guiding device, wherein the guiding device comprises at least one guiding roller and a guiding licker-in arranged in front of the guiding roller along the movement direction of the fibers, the second ultrasonic device is arranged inside the guiding licker-in, a plurality of thorns which are uniformly distributed and protrude from the surface of the guiding licker-in are arranged on the guiding licker-in, and the guiding licker-in is matched with the second ultrasonic device to open the tension of the solution on the surface of the fiber bundle and generate gaps among the fibers of the fiber bundle;
the electrostatic spraying gun is arranged behind the second ultrasonic device and is used for spraying the thermoplastic resin powder on the surface of the fiber, and the traction speed of the fiber is 2-4 m/min;
the hot pressing device comprises a first cylinder roller, a second cylinder roller and a high-temperature heating box arranged between the first cylinder roller and the second cylinder roller, wherein the temperature of the high-temperature heating box is 200-400 ℃;
the first cylinder roller is used for pre-pressing the thermoplastic resin adhered to the surface of the fiber, the high-temperature heating box is used for melting the thermoplastic resin on the surface of the fiber, and the second cylinder roller is used for uniformly solidifying the thermoplastic resin on the surface of the fiber bundle under pressure.
2. The thermoplastic resin powder impregnation apparatus of claim 1, wherein said thermoplastic resin comprises one of nylon 6, polyetheretherketone, polypropylene, polylactic acid, and polyphenylene sulfide; and/or the number of the groups of groups,
the particle size of the thermoplastic resin powder is 100-200 meshes.
3. The thermoplastic resin powder impregnation apparatus of claim 1, wherein the mass ratio of said silane coupling agent to said nanosilica sol is 10: (2-6).
4. The thermoplastic resin powder impregnating apparatus as recited in claim 1, wherein said electrostatic spray guns are at least one group, each group of said electrostatic spray guns is two, each group of said electrostatic spray guns is uniformly distributed along the moving direction of said fiber bundle, two of said electrostatic spray guns of each group are symmetrically arranged, and two of said electrostatic spray guns are respectively arranged above and below said fiber bundle.
5. The apparatus according to claim 4, wherein the distance between the electrostatic spray gun and the fiber is 200mm to 300mm, and the flow rate of the electrostatic spray gun is 30 to 150 nm/min.
6. The thermoplastic resin powder impregnating apparatus as recited in any one of claims 1 to 5, wherein the temperature of said oven-drying oven is 300 ℃ to 500 ℃, and the length of said oven-drying oven is 3m to 5m;
the length of the high-temperature grinding box is 3 m-5 m
The length of the high-temperature heating box is 5-6 m;
the length of the high-temperature heating box and the length direction of the drying box are as follows: the direction of movement of the fiber bundles.
7. The apparatus according to claim 6, further comprising a modifying solution recovery apparatus provided between the surface modifying apparatus and the electrostatic spraying apparatus, the modifying solution recovery apparatus including at least one pair of pressure rollers each for extruding an excess modifying solution of the fiber bundle, and a recovery tank provided below the pressure rollers.
8. The apparatus according to claim 6, further comprising at least one pair of cooling rolls provided after the second cylinder roll, each pair of cooling rolls being for cooling at least upper and lower surfaces of the fiber bundles, cooling water being used inside the cooling rolls, the cooling water having a temperature of 5 ℃ to 20 ℃.
9. A continuous fiber-reinforced thermoplastic resin powder impregnation method, characterized in that the thermoplastic resin powder impregnation apparatus according to any of claims 1 to 8 is used, the impregnation method comprising:
removing sizing on the surface of the fiber by using high temperature and air spreading, and widening and thinning the fiber bundle;
ultrasonically removing the slurry and impurities in an acetone solution;
modifying the surface of the fiber bundle by using a silane coupling agent and nano silica sol;
opening the surface solution tension of the fiber bundles by using a licker-in and ultrasonic action and enabling gaps to be formed among the fiber bundles;
electrostatically spraying a thermoplastic resin powder onto the wetted fiber bundles;
the fiber bundle to which the thermoplastic resin powder is adhered is subjected to hot pressing so that the thermoplastic resin is cured at the fiber bundle.
10. A fiber-reinforced thermoplastic resin composite material prepared by the impregnation method of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211719166.XA CN116038941B (en) | 2022-12-30 | 2022-12-30 | Continuous fiber reinforced thermoplastic resin powder impregnating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211719166.XA CN116038941B (en) | 2022-12-30 | 2022-12-30 | Continuous fiber reinforced thermoplastic resin powder impregnating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN116038941A true CN116038941A (en) | 2023-05-02 |
| CN116038941B CN116038941B (en) | 2024-04-19 |
Family
ID=86126771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211719166.XA Active CN116038941B (en) | 2022-12-30 | 2022-12-30 | Continuous fiber reinforced thermoplastic resin powder impregnating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116038941B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116426071A (en) * | 2023-05-25 | 2023-07-14 | 江苏大易材料科技有限公司 | Thermoplastic continuous fiber strip with high mechanical property and production process thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160283917A1 (en) * | 2015-03-28 | 2016-09-29 | Kayren Joy Nunn | Method and system of processing waste fabrics to rejuvenated fibrous materials |
| JP2016180037A (en) * | 2015-03-24 | 2016-10-13 | 三菱レイヨン株式会社 | Carbon fiber-reinforced thermoplastic resin composite material, and molded body using the same |
| CN108214980A (en) * | 2017-12-12 | 2018-06-29 | 华东理工大学 | A kind of device and method for preparing continuous fiber reinforced thermoplastic prepreg tape |
| KR20200076505A (en) * | 2018-12-19 | 2020-06-29 | 재단법인 포항산업과학연구원 | Mhethod for manufacturing of carbon fiber reinforced plastic |
| CN111993683A (en) * | 2020-04-17 | 2020-11-27 | 北京化工大学 | Continuous fiber reinforced thermoplastic resin powder impregnation device and impregnation method |
| CN112342658A (en) * | 2020-12-22 | 2021-02-09 | 苏州璟珮新材料科技有限公司 | Novel skin-friendly elastic yarn and production process thereof |
-
2022
- 2022-12-30 CN CN202211719166.XA patent/CN116038941B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016180037A (en) * | 2015-03-24 | 2016-10-13 | 三菱レイヨン株式会社 | Carbon fiber-reinforced thermoplastic resin composite material, and molded body using the same |
| US20160283917A1 (en) * | 2015-03-28 | 2016-09-29 | Kayren Joy Nunn | Method and system of processing waste fabrics to rejuvenated fibrous materials |
| CN108214980A (en) * | 2017-12-12 | 2018-06-29 | 华东理工大学 | A kind of device and method for preparing continuous fiber reinforced thermoplastic prepreg tape |
| KR20200076505A (en) * | 2018-12-19 | 2020-06-29 | 재단법인 포항산업과학연구원 | Mhethod for manufacturing of carbon fiber reinforced plastic |
| CN111993683A (en) * | 2020-04-17 | 2020-11-27 | 北京化工大学 | Continuous fiber reinforced thermoplastic resin powder impregnation device and impregnation method |
| CN112342658A (en) * | 2020-12-22 | 2021-02-09 | 苏州璟珮新材料科技有限公司 | Novel skin-friendly elastic yarn and production process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 黄明君;翟建广;: "热塑性树脂熔融浸渍连续碳纤维装置及工艺研究", 塑料工业, no. 11, 20 November 2016 (2016-11-20), pages 74 - 78 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116426071A (en) * | 2023-05-25 | 2023-07-14 | 江苏大易材料科技有限公司 | Thermoplastic continuous fiber strip with high mechanical property and production process thereof |
| CN116426071B (en) * | 2023-05-25 | 2024-03-19 | 江苏大易材料科技有限公司 | Thermoplastic continuous fiber strip with high mechanical property and production process thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN116038941B (en) | 2024-04-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6450773B2 (en) | Method for producing thermoplastic polymer pre-impregnated fiber material in a fluidized bed | |
| US5094883A (en) | Flexible multiply towpreg and method of production therefor | |
| US5171630A (en) | Flexible multiply towpreg | |
| JP6495932B2 (en) | Process for producing thermoplastic polymer pre-impregnated fiber material using an aqueous dispersion of polymer | |
| KR102585419B1 (en) | Method for producing fibrous materials pre-impregnated with thermoplastic polymers in powder form | |
| US11795591B2 (en) | Method and device for producing a ribbon and a thread of bamboo fiber | |
| KR102618130B1 (en) | Graphene-based fibers, yarns, composites, and methods for producing the same | |
| US7790284B2 (en) | Flexible composite prepreg materials | |
| JP6083377B2 (en) | Carbon fiber composite material | |
| CN116038941B (en) | Continuous fiber reinforced thermoplastic resin powder impregnating device | |
| CN111993683A (en) | Continuous fiber reinforced thermoplastic resin powder impregnation device and impregnation method | |
| US5302419A (en) | Towpregs from recycled plastics by powder fusion coating and method of production therefor | |
| CN205631113U (en) | Serialization preparation facilities of continuous fibers reinforcing thermoplasticity preimpregnation material | |
| CN108340599B (en) | Process and method for manufacturing thermoplastic prepreg by continuous fibers | |
| CN101418495A (en) | The preparation method of leached fibre felt by electrostatic dry | |
| CN112847925B (en) | Continuous fiber reinforced 3D printing composite material melting and dipping system and method | |
| CN110126126A (en) | Continuous carbon fiber thermoplastic prepreg preparation system | |
| CN109968691B (en) | Fiber thermoplastic casting vibration infiltration pre-dipping machine | |
| KR20130085163A (en) | Method of manufacturing for thermoplastic tape with impregnated continuous carbon fiber | |
| JPH0325540B2 (en) | ||
| JP5301132B2 (en) | Prepreg manufacturing equipment | |
| Miller et al. | Impregnation techniques for thermoplastic matrix composites | |
| US20150258762A1 (en) | Method of Producing Isotropic Random Mat for Forming Thermoplastic Composite Material | |
| US5360661A (en) | Towpregs from recycled plastics by powder fusion coating | |
| JPS646012B2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |