CN112829344A - PEEK material based on carbon fiber reinforced type and preparation equipment thereof - Google Patents
PEEK material based on carbon fiber reinforced type and preparation equipment thereof Download PDFInfo
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- CN112829344A CN112829344A CN202011621421.8A CN202011621421A CN112829344A CN 112829344 A CN112829344 A CN 112829344A CN 202011621421 A CN202011621421 A CN 202011621421A CN 112829344 A CN112829344 A CN 112829344A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/504—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC] using rollers or pressure bands
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
Abstract
The invention discloses a carbon fiber reinforced PEEK material and preparation equipment thereof, and the carbon fiber reinforced PEEK material comprises a carbon fiber reinforced layer, a first substrate layer and a second substrate layer, wherein the first substrate layer is made of wear-resistant PEEK resin powder and is attached to a carbon fiber yarn through baking and heating, and the second substrate layer is made of wear-resistant PEEK resin and is covered on the first substrate layer through melting and dipping. The preparation equipment comprises a creel, a yarn collecting plate, a yarn spreading roller, a powder tank, a hot drying machine, a melt impregnation module, a three-roller calender, a cooling tractor, a cooling pool and a winding machine. The carbon fiber reinforced PEEK material has tensile strength of 250MPa, heat distortion temperature of 315 ℃, bending strength of 405MPa and excellent performance. Meanwhile, through optimization of the whole production line, the powder impregnation of electrostatic feeding, the first layer impregnation of the hot drying machine and the second layer impregnation of the melting impregnation module are adopted, so that the uniformity of the matrix is effectively improved, and the resin content and the apparent quality of the prepreg are remarkably improved.
Description
Technical Field
The invention particularly relates to a PEEK material based on carbon fiber reinforcement and preparation equipment thereof.
Background
Thermoplastic resins and their composites have developed rapidly over the last decade. Compared with thermosetting materials, the thermoplastic resin has a series of advantages of excellent impact toughness, fatigue damage resistance, short molding period, high production efficiency, long-term storage, capability of repairing and recycling, and the like. Therefore, the composite material is developed and applied more and more widely in the fields of aerospace, medical treatment, electronics, machinery and the like. Particularly, with the appearance of a novel aromatic thermoplastic resin matrix composite material with good rigidity, heat resistance and medium resistance, the thermoplastic composite material overcomes the defects of low elastic modulus, poor solvent resistance, low bonding strength between fibers and resin and the like in the prior art, and can be used for structural materials with higher performance requirements.
The existing processing of thermoplastic composite materials mainly adopts a melting method, a solvent method, a powder method and the like, but the traditional powder method and the melting method have the problems of uneven feeding and discharging, and the resin content and the apparent quality of the prepreg are insufficient. Meanwhile, the single-layer PEEK carbon fiber reinforced composite material in the prior art has poor performance,
disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a carbon fiber reinforced PEEK material which comprises a carbon fiber reinforced layer, a first substrate layer and a second substrate layer, wherein the carbon fiber reinforced layer is composed of a plurality of carbon fiber yarns, the first substrate layer covers the front surface and the back surface of the carbon fiber reinforced layer, the second substrate layer covers the first substrate layer, the first substrate layer is made of wear-resistant PEEK resin powder and is attached to the carbon fiber yarns through baking and heating, and the second substrate layer is made of wear-resistant PEEK resin and is covered on the first substrate layer through melting and dipping.
Further, the wear-resistant PEEK resin comprises the following components in parts by weight: 45-65 parts of PEEK, 10-15 parts of polytetrafluoroethylene, 15-25 parts of graphene surface grafted silicon carbide and 0.05-0.8 part of antioxidant;
the preparation method of the graphene surface grafted silicon carbide comprises the following steps:
(1) adding nano silicon carbide into a solvent, then adding a proper amount of silane coupling agent, heating to 80-90 ℃ under a nitrogen atmosphere, keeping the temperature, stirring for 6-8h, filtering and drying to obtain silane modified silicon carbide; wherein the mass ratio of the nano silicon carbide to the silane coupling agent is 1 (0.05-0.15);
adding siloxane modified silicon carbide and a proper amount of graphene into a solvent, carrying out ultrasonic treatment for 20-40min to obtain a uniformly mixed suspension, carrying out vacuum filtration through a nylon membrane, and drying to obtain the graphene surface grafted silicon carbide; wherein the mass ratio of the siloxane modified silicon carbide to the graphene is 1 (0.25-0.6);
(2) the solvent is a mixture of methyl pyrrolidone and xylene in a mass ratio of 1: 1.
The wear-resistant PEEK composite material based on the scheme has the advantages that: the graphene and the silicon carbide are subjected to graft polymerization, the silane modified silicon carbide has the effect similar to that of a cross-linking agent and is grafted among different graphene layers, and the graphene has different horizontal and vertical orientations, so that more strong bond reaction points are manufactured between the graphene and the silicon carbide, the external force action is resisted together, and the mechanical property of the composite material is effectively improved;
the polytetrafluoroethylene is added, so that the PEEK composite material is smoother from the aspect of a molecular structure, the integral lubrication effect is improved, and the friction resistance of the material is greatly enhanced.
A preparation device of a PEEK material based on carbon fiber reinforcement comprises a creel, a yarn collecting plate, a yarn spreading roller, a powder groove, a hot drying machine, a melting and dipping module, a three-roller calender, a cooling tractor, a cooling tank and a winding machine.
Furthermore, a tension measuring roller is arranged between the creel and the yarn collecting plate, the tension measuring roller is connected with an angle positioning shaft through a crank swing arm, the angle positioning shaft is rotatably connected with the creel, the rear end of the angle positioning shaft is connected to the axis of an angle sensor, and a shell of the angle sensor is installed on the creel through a sensor support.
Furthermore, the yarn spreading roller is an electric heating yarn spreading roller, and the electric heating yarn spreading roller is connected with the shaft temperature controller.
Furthermore, the powder groove locate in the powder flooding incasement, the bottom in powder groove stretches out static electret case and is connected with the fan through the intake pipe, the top of powder flooding case is equipped with the recovery tube, the recovery tube be connected with pulse dust filter, pulse dust filter's dust export is connected with the air intake of frequency conversion fan, the air outlet of frequency conversion fan is connected with two electrostatic spraying guns, the electrostatic spraying gun locate the powder flooding incasement, two electrostatic spraying guns locate the powder flooding incasement carbon fiber yarn and close on the exit, and two electrostatic spraying guns are located the top and the below of carbon fiber yarn respectively.
Furthermore, the powder groove is divided into a plurality of sub powder grooves by the middle partition plate, and the sub powder grooves are connected with the air inlet pipe through the sub air inlet pipes.
Furthermore, the melting and dipping module comprises a granulator, a single-screw extruder, a melt pump and a dipping die, wherein a material outlet of the single-screw extruder is conveyed to the dipping die through the melt pump.
Because the melting, the shearing and the mixing of the screw extruder, the melt transportation and the pressure build-up of the melt are all carried out synchronously in the working process, the melt pressure can be influenced by other factors, and the melt pressure conveyed to the die is uneven. And the melt pump is arranged between the screw extruder and the dipping die, so that the uniformity of melt pressure can be effectively improved, the melt extruded by the dipping die is more uniform, and the uniformity of melt dipping is improved.
Furthermore, the dipping die consists of two wedge-shaped monomers, the tips of the wedge-shaped monomers are dipping ports, and the dipping ports are respectively positioned on two sides of the carbon fiber yarns.
Furthermore, the melt pump comprises a driving shaft and a driven shaft, wherein pump gears are sleeved on the driving shaft and the driven shaft, the pump gears are arranged in the pump body, the driving shaft and the driven shaft are rotatably connected with the pump body through sliding bearings, a front end plate and a rear end plate are respectively arranged at two ends of the pump body, the driving shaft penetrates out of a preset shaft hole in the front end plate, the front end plate is connected with a spiral sealing box, a spiral sealing groove is formed in the inner wall of the spiral sealing box, the groove direction of the spiral sealing groove is opposite to the operation direction of the driving shaft, a gland is sleeved at the outer end of the driving shaft, and the gland is connected with the; the spiral sealing box and the gland are provided with an oil sealing box, and a graphite sealing ring and an oil sealing ring are arranged between the oil sealing box and the driving shaft.
The present melt pump generally adopts the packing of processing more easily to seal, but the packing of prior art is sealed to be worn and torn great, and the change cycle is short, all needs the full line to stop when changing the maintenance filler at every turn, and spiral seal's processing cost expense is higher relatively, the spiral seal box inner wall processing spiral seal groove of the relative easy processing that above-mentioned scheme adopted, both avoided the processing cost too high, had also reached the sealed effect of preferred, it is long when improving the online operation of melt pump, and then reduction in production cost.
The carbon fiber yarn sequentially passes through the production line of the invention through the following processes: preheating and spreading yarn → primarily powdering → baking and dipping → melting and dipping → cooling and shaping → rolling, and finally producing the composite material of the carbon fiber reinforcement, the powder-dipped first matrix layer and the melting and dipping second matrix layer.
Has the advantages that: the carbon fiber reinforced PEEK material has the tensile strength of 250MPa, the thermal deformation temperature of 315 ℃, the bending strength of 405MPa and excellent performance. Meanwhile, through optimization of the whole production line, the powder impregnation of electrostatic feeding, the first layer impregnation of the hot drying machine and the second layer impregnation of the melting impregnation module are adopted, so that the uniformity of the matrix is effectively improved, and the resin content and the apparent quality of the prepreg are remarkably improved. The powder impregnation makes and adopts recovery tube + pulse dust filter + electrostatic spraying rifle can effectively improve the adhesion rate of carbon fiber yarn, avoids resin powder to be wasted simultaneously. The tension measuring roller arranged on the creel can obtain the tension applied to the carbon fiber yarns in real time, so that the yarn releasing speed of the creel can be adjusted in time, and the dipping uniformity is further improved.
Drawings
FIG. 1 is a schematic structural diagram of a preparation device based on a carbon fiber reinforced PEEK material;
FIG. 2 is a schematic view of the structure at the tension measuring roll;
FIG. 3 is a schematic view of the structure at the powder groove;
FIG. 4 is a first schematic structural view of a melt impregnation module;
FIG. 5 is a schematic structural view II of a melt impregnation module;
FIG. 6 is a schematic diagram of a melt pump;
FIG. 7 is a schematic cross-sectional view of a PEEK material based on carbon fiber reinforcement;
in the figure: 1. creel, 2, yarn collecting plate, 3, yarn spreading roller, 4, powder groove, 5, hot drying machine, 6, melt impregnation module, 7, three-roller calender, 8, cooling tractor, 9, cooling tank, 10, winding machine, 101, tension measuring roller, 102, crank swing arm, 103, angle positioning shaft, 104, angle sensor, 105, sensor support, 401, powder impregnation box, 402, air inlet pipe, 403, recovery pipe, 404, pulse dust filter, 405, variable frequency fan, 406, electrostatic spraying gun, 601, single screw extruder, 602, melt pump, 603, impregnation die, 604, driving shaft, 605, driven shaft, 606, pump gear, 607, pump body, 608, sliding bearing, 609, front end plate, 610, rear end plate, 611, spiral sealing box, 612, spiral sealing groove, 613, gland, 614, oil sealing box, 615, graphite sealing ring, 616, oil sealing ring, 1001. the carbon fiber reinforced plastic composite material comprises a carbon fiber reinforced layer 1002, a first substrate layer 1003 and a second substrate layer.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further described in detail with reference to the following examples and the accompanying drawings, which are only used for explaining the present invention and are not to be construed as limiting the scope of the present invention.
As shown in fig. 1-7, a PEEK material based on carbon fiber reinforced type is characterized by comprising a carbon fiber reinforced layer 1001, a first substrate layer 1002 and a second substrate layer 1003, wherein the carbon fiber reinforced layer is composed of a plurality of carbon fiber yarns, the first substrate layer covers the front and back surfaces of the carbon fiber reinforced layer, the second substrate layer covers the first substrate layer, the first substrate layer is made of wear-resistant PEEK resin powder and is attached to the carbon fiber yarns through baking and heating, and the second substrate layer is made of wear-resistant PEEK resin and is covered on the first substrate layer through melting and dipping.
Further, the wear-resistant PEEK resin comprises the following components in parts by weight: 45-65 parts of PEEK, 10-15 parts of polytetrafluoroethylene, 15-25 parts of graphene surface grafted silicon carbide and 0.05-0.8 part of antioxidant;
the preparation method of the graphene surface grafted silicon carbide comprises the following steps:
(1) adding nano silicon carbide into a solvent, then adding a proper amount of silane coupling agent, heating to 80-90 ℃ under a nitrogen atmosphere, keeping the temperature, stirring for 6-8h, filtering and drying to obtain silane modified silicon carbide; wherein the mass ratio of the nano silicon carbide to the silane coupling agent is 1 (0.05-0.15);
adding siloxane modified silicon carbide and a proper amount of graphene into a solvent, carrying out ultrasonic treatment for 20-40min to obtain a uniformly mixed suspension, carrying out vacuum filtration through a nylon membrane, and drying to obtain the graphene surface grafted silicon carbide; wherein the mass ratio of the siloxane modified silicon carbide to the graphene is 1 (0.25-0.6);
(2) the solvent is a mixture of methyl pyrrolidone and xylene in a mass ratio of 1: 1.
A preparation device based on carbon fiber reinforced PEEK material comprises a creel 1, a yarn collecting plate 2, a yarn spreading roller 3, a powder tank 4, a hot drying machine 5, a melting impregnation module 6, a three-roller calender 7, a cooling tractor 8, a cooling pool 9 and a winding machine 10 which are sequentially arranged along the advancing direction of carbon fiber yarns;
a tension measuring roller 101 is arranged between the creel 1 and the yarn collecting plate 2, the tension measuring roller 101 is connected with an angle positioning shaft 103 through a crank swing arm 102, the angle positioning shaft 103 is rotatably connected with the creel 1, the rear end of the angle positioning shaft 103 is connected to the axis of an angle sensor 104, and a shell of the angle sensor 104 is installed on the creel through a sensor support 105;
the yarn spreading roller 3 is an electric heating yarn spreading roller, and the electric heating yarn spreading roller is connected with the shaft temperature controller 301;
the powder tank 4 is arranged in the powder impregnation tank 401, the bottom end of the powder tank 4 extends out of the electrostatic electret tank through the air inlet pipe 402 and is connected with the fan, the powder tank is divided into a plurality of sub powder tanks through the middle partition plate, the sub powder tanks are connected with the air inlet pipe through the sub air inlet pipe, the top of the powder impregnation tank 401 is provided with a recovery pipe 403, the recovery pipe 403 is connected with the pulse dust filter 404, the dust outlet of the pulse dust filter 404 is connected with the air inlet of the variable frequency fan 405, the air outlet of the variable frequency fan 405 is connected with two electrostatic spraying guns 406, and the electrostatic spraying guns 406 are arranged in the powder impregnation tank. The two electrostatic spraying guns are arranged in the powder impregnation box and close to the outlet of the carbon fiber yarns, and the two electrostatic spraying guns 406 are respectively positioned above and below the carbon fiber yarns.
The melt impregnation module 6 comprises a granulator, a single-screw extruder 601, a melt pump 602 and an impregnation die 603, wherein a material outlet of the single-screw extruder 601 is conveyed to the impregnation die 603 through the melt pump 602. The dipping die 603 consists of two wedge-shaped monomers, the tips of the wedge-shaped monomers are dipping ports, and the dipping ports are respectively positioned on two sides of the carbon fiber yarns.
In this embodiment, the melt pump 602 includes a driving shaft 604 and a driven shaft 605, the driving shaft 604 and the driven shaft 605 are both sleeved with a pump gear 606, the pump gear 606 is disposed in the pump body 607, the driving shaft 604 and the driven shaft 605 are both rotatably connected to the pump body 607 through a sliding bearing 608, two ends of the pump body 607 are respectively provided with a front end plate 609 and a rear end plate 610, the driving shaft 604 penetrates through a shaft hole preset on the front end plate 609, the front end plate 609 is connected to a spiral sealing box 611, the inner wall of the spiral sealing box 611 is provided with a spiral sealing groove 612, the groove direction of the spiral sealing groove 612 is opposite to the driving shaft running direction, the outer end of the driving shaft 604 is sleeved with a gland 613, and the gland 613 is connected to the spiral. An oil seal box 614 is arranged between the spiral seal box 611 and the gland 613, and a graphite seal ring 615 and an oil seal ring 616 are arranged between the oil seal box 614 and the driving shaft 604.
The carbon fiber yarn sequentially passes through the production line of the invention through the following processes: preheating and spreading yarn → primarily powdering → baking and dipping → melting and dipping → cooling and shaping → rolling, and finally producing the composite material with the carbon fiber as the reinforcement, the powder-dipped first layer matrix and the melting and dipping second layer matrix structure.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The utility model provides a PEEK material based on carbon fiber reinforcement, its characterized in that includes carbon fiber reinforcement layer, first base member layer and second base member layer, the carbon fiber reinforcement layer constitute by a plurality of carbon fiber yarns, first base member layer cover in the tow sides of carbon fiber reinforcement layer, second base member layer cover on first base member layer, first base member layer is that wearability PEEK resin powder is toasted the heating and is attached to on the carbon fiber yarn, second base member layer is that wearability PEEK resin covers on first base member layer through melting flooding.
2. The carbon fiber reinforced PEEK material of claim 1, wherein the wear-resistant PEEK resin is composed of the following components in parts by weight: 45-65 parts of PEEK, 10-15 parts of polytetrafluoroethylene, 15-25 parts of graphene surface grafted silicon carbide and 0.05-0.8 part of antioxidant;
the preparation method of the graphene surface grafted silicon carbide comprises the following steps:
(1) adding nano silicon carbide into a solvent, then adding a proper amount of silane coupling agent, heating to 80-90 ℃ under a nitrogen atmosphere, keeping the temperature, stirring for 6-8h, filtering and drying to obtain silane modified silicon carbide; wherein the mass ratio of the nano silicon carbide to the silane coupling agent is 1 (0.05-0.15);
(2) adding siloxane modified silicon carbide and a proper amount of graphene into a solvent, carrying out ultrasonic treatment for 20-40min to obtain a uniformly mixed suspension, carrying out vacuum filtration through a nylon membrane, and drying to obtain the graphene surface grafted silicon carbide; wherein the mass ratio of the siloxane modified silicon carbide to the graphene is 1 (0.25-0.6);
the solvent is a mixture of methyl pyrrolidone and xylene in a mass ratio of 1: 1.
3. The carbon fiber reinforced PEEK material preparation equipment as claimed in claim 1, comprising a creel, a yarn collecting plate, a yarn spreading roller, a powder tank, a hot dryer, a melt impregnation module, a three-roller calender, a cooling tractor, a cooling tank and a winder.
4. The carbon fiber reinforced PEEK material preparation device of claim 3, wherein a tension measuring roller is arranged between the creel and the yarn collecting plate, the tension measuring roller is connected with an angle positioning shaft through a crank swing arm, the angle positioning shaft is rotatably connected with the creel, the rear end of the angle positioning shaft is connected to an axis of an angle sensor, and a housing of the angle sensor is mounted on the creel through a sensor support.
5. The carbon fiber reinforced PEEK material-based manufacturing apparatus of claim 3, wherein the spreader roll is an electrically heated spreader roll, and the electrically heated spreader roll is connected to the shaft temperature controller.
6. The carbon fiber reinforced PEEK material preparation device of claim 3, wherein the powder tank is disposed in the powder impregnation tank, a bottom end of the powder tank extends out of the electrostatic electret tank through an air inlet pipe and is connected with the fan, a recovery pipe is disposed at a top of the powder impregnation tank and is connected with the pulse dust filter, a dust outlet of the pulse dust filter is connected with an air inlet of the variable frequency fan, two electrostatic painting guns are connected to an air outlet of the variable frequency fan and disposed in the powder impregnation tank, two electrostatic painting guns are disposed in the powder impregnation tank near an outlet of the carbon fiber yarn, and the two electrostatic painting guns are respectively disposed above and below the carbon fiber yarn.
7. The carbon fiber reinforced PEEK material preparation apparatus of claim 6, wherein the powder tank is divided into a plurality of sub-powder tanks by intermediate partitions, and the sub-powder tanks are connected with the air inlet pipe by sub-air inlet pipes.
8. The carbon fiber reinforced PEEK material preparation device as claimed in claim 3, wherein the melt impregnation module comprises a pelletizer, a single screw extruder, a melt pump and an impregnation die, and a material outlet of the single screw extruder is conveyed to the impregnation die through the melt pump.
9. The carbon fiber reinforced PEEK material preparation device of claim 8, wherein the dipping mold is composed of two wedge-shaped monomers, the tips of the wedge-shaped monomers are dipping ports, and the dipping ports are respectively located on two sides of the carbon fiber yarns.
10. The carbon fiber reinforced PEEK material preparation device of claim 8, wherein the melt pump comprises a driving shaft and a driven shaft, wherein the driving shaft and the driven shaft are both sleeved with a pump gear, the pump gear is arranged in the pump body, the driving shaft and the driven shaft are both rotatably connected with the pump body through sliding bearings, a front end plate and a rear end plate are respectively arranged at two ends of the pump body, the driving shaft penetrates out of a preset shaft hole in the front end plate, the front end plate is connected with the spiral sealing box, a spiral sealing groove is arranged on the inner wall of the spiral sealing box, the groove direction of the spiral sealing groove is opposite to the driving shaft operation direction, a gland is sleeved at the outer end of the driving shaft, and the gland is connected with the spiral sealing box; the spiral sealing box and the gland are provided with an oil sealing box, and a graphite sealing ring and an oil sealing ring are arranged between the oil sealing box and the driving shaft.
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| CN202011621421.8A CN112829344A (en) | 2020-12-31 | 2020-12-31 | PEEK material based on carbon fiber reinforced type and preparation equipment thereof |
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| CN202011621421.8A CN112829344A (en) | 2020-12-31 | 2020-12-31 | PEEK material based on carbon fiber reinforced type and preparation equipment thereof |
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