CN215243003U - Device for preparing fiber reinforced thermoplastic composite material laminated plate - Google Patents
Device for preparing fiber reinforced thermoplastic composite material laminated plate Download PDFInfo
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- CN215243003U CN215243003U CN202121313105.4U CN202121313105U CN215243003U CN 215243003 U CN215243003 U CN 215243003U CN 202121313105 U CN202121313105 U CN 202121313105U CN 215243003 U CN215243003 U CN 215243003U
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Abstract
The utility model provides a device for preparing a fiber reinforced thermoplastic composite laminated plate, which comprises a pressurizing device, a heating device, a heat preservation and insulation device and a mould; the pressurizing device is used for providing a proper pressure environment for preparing the laminated plate; the heating device is used for heating the mould and providing a proper temperature environment for preparing the laminated plate; the heat preservation and insulation device is used for keeping the preparation temperature of the laminated plate stable and protecting the pressurizing device; the mould is used for conducting heat and pressure, and the prepreg is guaranteed to be flat and to be bonded reliably. The device simple structure, convenient operation can reduce equipment scale, improve preparation efficiency to reduce preparation cost, the fibre reinforced thermoplastic composite material laminated board bonding condition who utilizes the device to make is good, and mechanical properties is superior.
Description
Technical Field
The utility model relates to a combined material prepares equipment technical field, especially, relates to a device for preparing fibre reinforced thermoplastic composite laminated board.
Background
The fiber reinforced thermoplastic composite material has the advantages of high specific strength and specific stiffness, strong impact resistance, chemical corrosion resistance, good high-temperature mechanical property, short molding period, long quality guarantee period, reusability and the like, and is more and more widely applied to the fields of aerospace, weaponry, automobile traffic, medical appliances and the like. The laminated board structure prepared by the fiber reinforced thermoplastic composite prepreg at a certain temperature and pressure according to a certain laying mode has the characteristic of strong designability, the expressed mechanical coupling effect can be used for designing various self-adaptive structures with different coupling effects, and the comprehensive mechanical property of the structure can be obviously improved.
The temperature and the pressure are key parameters for preparing the fiber reinforced thermoplastic composite laminated plate, and the proper pressure and the proper temperature are favorable for preparing the laminated plate with compact internal structure, uniform resin content and excellent mechanical property. The conventional autoclave process for pressurizing and heating the prepreg through air has the advantages of uniform applied pressure and constant temperature field, but the thermoplastic composite material has high melting point and high viscosity, and is heated by an air heat transfer mode, so that the production efficiency is low, and the forming period is generally long. Generally, in the molding process, a metal mold applies pressure to the laid prepreg to conduct heat, so that the heat conduction efficiency is high, but in order to ensure the molding quality of the thermoplastic composite laminated plate, the conventional molding process usually adopts a natural cooling mode, but the time for cooling the high-temperature metal mold to the normal temperature is longer, so that the preparation period of the molding process is prolonged to a certain extent. In order to solve the problem, a certain improvement is made on a mould of a mould pressing process in the prior patent, for example, in the invention patent with the publication number of CN105346101A, a mould pressing method and a mould pressing device for a fibre reinforced thermoplastic resin matrix composite material laminate are disclosed, and the problem of improving the heating and cooling rates in the preparation process is solved by simultaneously arranging a heating resistance wire slotted hole and a cooling fluid channel on the mould. However, by adopting the mode of alternately arranging the heating resistance wires and the cooling fluid channels, on one hand, the local temperature of the die is over-high or over-low, and the prepared laminated plate has uneven heat distribution, so that the local deformation is overlarge and larger residual stress is generated; on the other hand, the heating efficiency of the die is reduced due to the reduction of the number of the heating resistance wires.
Accordingly, there is a need for an apparatus for fiber reinforced thermoplastic composite laminates that provides both increased heating and cooling efficiencies.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a device for preparing fibre reinforced thermoplastic composite laminated board, the device rely on current test equipment, and simple structure, convenient operation can reduce the equipment scale, improve preparation efficiency to reduce the preparation cost.
The utility model provides a device for preparing a fiber reinforced thermoplastic composite material laminated plate, which comprises a pressurizing device, a heating device, a heat preservation and insulation device and a mould;
the pressurizing device comprises a pressure testing machine and a rectangular metal block, wherein the rectangular metal block comprises an upper metal block and a lower metal block which are arranged in parallel; the upper metal block is fixed below a cross beam of the compression testing machine through a steel chain, and the lower metal block is placed on a platform of the compression testing machine; the lower surface of the upper metal block and the upper surface of the lower metal block are both provided with a plurality of rectangular long grooves;
the heating device comprises a quartz glass heating pipe and a temperature control incubator; the quartz glass heating pipe is arranged in the rectangular long grooves on the upper metal block and the lower metal block, and the temperature control incubator is electrically connected with the quartz glass heating pipe and used for controlling the working state of the quartz glass heating pipe;
the heat preservation and insulation device is arranged on the upper surface of the upper metal block and the lower surface of the lower metal block and is used for keeping the preparation temperature of the laminated plate stable and protecting the pressurizing device;
the mould sets up between last metal block and the lower metal block for heat conduction and pressure guarantee that preimpregnation material is level and smooth and bond reliably.
Further, the mold comprises an upper mold and a lower mold, and a mold pressing cavity is formed between the upper mold and the lower mold and used for clamping the prepreg layer.
Furthermore, an aluminum sheet is arranged between the upper die and the lower die and used for forming two die pressing cavities, and the preparation efficiency is improved.
Furthermore, four threaded holes are symmetrically distributed on two sides of the upper die and the lower die respectively, and screws are fixed in the threaded holes and used for facilitating moving the dies.
Furthermore, temperature measuring holes are respectively formed in the two sides of the upper die and the lower die, temperature-sensitive sensors are arranged in the temperature measuring holes and are electrically connected with a temperature control box for monitoring the temperature of the dies in real time.
Further, the heat preservation and insulation device comprises a rectangular mica plate and quartz wool; the rectangular mica plates are arranged in two pairs, one pair is arranged at the upper part of the upper metal block, and the other pair is arranged on the machine testing platform and positioned at the lower part of the lower metal block and used for heat preservation and insulation; the quartz wool is placed at the position where the quartz glass heating pipe extends out of the rectangular metal block and is used for protecting the pressurizing device.
Furthermore, metal sheets for preventing the quartz glass heating tube from falling off are arranged on two sides of the upper metal block.
Further, the die is a stainless steel flat die.
The utility model has the advantages that:
1. the utility model is formed by adding a heating device on the basis of the existing compression testing machine, has simple preparation environment and is suitable for general mechanical testing laboratories; the utility model adopts the high-power quartz glass heating pipe to heat the mould, and the heating efficiency is high; a plurality of quartz glass heating pipes are uniformly distributed on two sides of the mould, and the mould is heated uniformly; in the preparation process, the pressure can be controlled stably by the pressure tester, and the temperature can be controlled stably by the temperature control incubator; the temperature field and the pressure field are uniform and constant, and the produced laminated plate is flat, good in bonding condition and excellent in mechanical property.
2. The utility model provides a mould in a device for preparing fibre reinforced thermoplastic composite laminated board includes upper die and bed die, accompanies the preimpregnation bed between upper and lower mould, constitutes "sandwich" structure, after the preparation, can shift the preparation that the next group has prepared "sandwich" structure to the workstation at once and carry out the preparation of laminated board, and technology operation is simple, practices thrift manpower and materials, and the heat rate of utilization is high; meanwhile, the device makes full use of the characteristics of good heat conduction efficiency and small thickness of the thermoplastic composite laminated plate, two mould pressing cavities are formed by arranging thin aluminum sheets in the upper mould and the lower mould, and two laminated plates can be prepared in one mould pressing process, so that the preparation efficiency is obviously improved.
In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be described in further detail with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. In the drawings:
FIG. 1 is a schematic structural view of an apparatus for manufacturing a fiber reinforced thermoplastic composite laminate according to the present invention;
FIG. 2 is a partial schematic view of FIG. 1 at A;
FIG. 3 is a schematic structural diagram of an upper metal block or a lower metal block in a rectangular metal block of the present invention;
FIG. 4 is a schematic structural view of a metal sheet according to the present invention;
in the figure, 1, a compression testing machine; 2. a steel chain; 3. a temperature control incubator; 4. an upper metal block; 5. a lower metal block; 6. an upper die; 7. a lower die; 8. a quartz glass heating tube; 9. quartz wool; 10. a rectangular mica plate; 11. a prepreg layer; 12. aluminum sheets; 13. and (4) screws.
Detailed Description
The embodiments of the invention will be described in detail hereinafter with reference to the accompanying drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1 to 4, the solution of the present invention is an apparatus for manufacturing a fiber reinforced thermoplastic composite laminate, comprising a pressurizing device, a heating device, a heat insulating device and a mold; the pressurizing device is used for providing a proper pressure environment for preparing the laminated plate; the heating device is used for heating the mould and providing a proper temperature environment for preparing the laminated plate; the heat preservation and insulation device is used for keeping the preparation temperature of the laminated plate stable and protecting the pressurizing device; the mould is used for conducting heat and pressure, and the prepreg is guaranteed to be flat and to be bonded reliably.
The pressurizing device comprises a pressure testing machine 1 and a rectangular metal block, wherein the rectangular metal block comprises an upper metal block 4 and a lower metal block 5 which are arranged in parallel; go up metal block 4 and fix through steel chain 2 the crossbeam below of compression testing machine 1, metal block 5 places on the compression testing machine platform down. Go up two screw holes of each symmetric distribution of rear surface before metal block 4, steel chain 2 bypasses 1 crossbeam of compression testing machine and links to each other with the rings screw through the D type shackle, the rings screw passes through the screw hole and fixes to make on last metal block 4 and go up metal block 4 and hang in the crossbeam below, through the length of adjustment steel chain, makes and goes up metal block 4 and be on a parallel with the compression testing machine platform. The lower surface of the upper metal block 4 and the upper surface of the lower metal block 5 are both provided with a plurality of rectangular long grooves. Specifically, eleven rectangular long grooves are uniformly distributed on the lower surface of the upper metal block 4, and eleven rectangular long grooves are uniformly distributed on the upper surface of the lower metal block 5.
The heating device comprises a quartz glass heating pipe 8 and a temperature control incubator 3; the quartz glass heating pipe 8 is arranged in the rectangular long grooves of the upper metal block 4 and the lower metal block 5 and used for heating the die. The temperature control incubator 3 is electrically connected with the quartz glass heating tube 8 and is used for setting the preparation temperature and controlling the working state of the quartz glass heating tube 8. The heating device also comprises a temperature-sensitive sensor and a metal sheet; the metal sheet is fixed on two sides of the upper metal block 4, a plurality of holes are formed in the metal sheet, the quartz glass heating pipe 8 is located in the rectangular long groove on the lower surface of the upper metal block 4, and two ends of the quartz glass heating pipe penetrate through the holes in the metal sheet to prevent the quartz glass heating pipe 8 from falling off; the two temperature-sensitive sensors are respectively placed in a temperature measuring hole reserved in the die and are electrically connected with the temperature control incubator 3, and the two temperature-sensitive sensors are used for monitoring the temperature of the die in real time.
The heat preservation and insulation device is arranged on the upper surface of the upper metal block 4 and the lower surface of the lower metal block 5 and is used for keeping the preparation temperature of the laminated plate stable and protecting the pressurizing device. Specifically, the heat preservation and insulation device comprises a rectangular mica plate 10 and quartz wool 9; two pairs of rectangular mica plates 10 are arranged, one pair is arranged at the upper part of the upper metal block 4, and the other pair is arranged on the machine testing platform and positioned at the lower part of the lower metal block 5 and used for heat preservation and heat insulation; the quartz wool 9 is placed at the position where the quartz glass heating pipe 8 extends out of the rectangular metal block and is used for protecting the pressurizing device.
Specifically, the mold comprises an upper mold 6 and a lower mold 7, and a mold pressing cavity is formed between the upper mold 6 and the lower mold 7 and used for clamping the prepreg layer 11. The upper die 6 and the lower die 7 are stainless steel flat plate dies, and a prepreg layer 11 is sandwiched between the two flat plate dies to form a sandwich structure and is arranged between the upper metal block 4 and the lower metal block 5. A thin aluminum sheet 12 is arranged between the upper die 6 and the lower die 7 and used for forming two die pressing cavities and improving the preparation efficiency; four threaded holes are symmetrically distributed on two sides of the upper die 6 and the lower die 7, and screws 13 are fixed in the threaded holes and used for facilitating moving of the dies.
The method for preparing the fiber reinforced thermoplastic composite material laminated plate by adopting the device comprises the following steps:
step (I): 20g of 1000-mesh graphite powder and 100ml of industrial alcohol with the purity of 99.97 percent are respectively taken and evenly mixed to prepare the release agent.
Step (II): the size of the upper and lower grinding tools is 326mm × 240mm × 10 mm. Firstly, polishing the surfaces of an upper die and a lower die by using sand paper to ensure that the surfaces are smooth and clean; then respectively coating film agents on the surfaces of the upper die and the lower die, and after the alcohol is completely volatilized, the graphite powder is uniformly distributed on the surfaces of the dies.
Step (three): the prepreg is a unidirectional T700 carbon fiber reinforced polyether ether ketone composite prepreg, and is cut on a workbench, wherein the cutting size is 304mm multiplied by 230mm, and the total number of the layers is eight. And (3) pricking small holes with the diameter of 0.5mm on the wide sides of the stacked prepregs, and penetrating thin stainless steel wires through the small holes to tightly attach the prepregs together.
Step (IV): the stacked prepreg layers were placed at the very center of the lower mold surface, and then the mold was closed and transferred to a metal plate. As shown in figure 3, the rectangular metal plate has dimensions of 326mm × 240mm × 34mm, and 11 long grooves are uniformly formed on the surface of the metal block, and the dimensions of the long grooves are 240mm × 12mm × 14 mm.
Step (V): and placing asbestos cloth between the part of the quartz glass heating pipe extending out of the metal block and the press, embedding the temperature sensors into reserved temperature measuring holes of the upper die and the lower die respectively, and sealing by using asbestos.
Step (six): setting the temperature of a temperature controller at 370 ℃, after the actual temperature of the die reaches a set temperature, applying pressure to the die by using a pressure tester, setting the pressure at 0.7MPa, keeping the temperature and the pressure for 30 minutes, then starting cooling, continuing to keep the pressure for 30 minutes, and finally cooling to room temperature by adopting a water cooling method for demoulding.
The utility model is formed by adding a heating device on the basis of the existing compression testing machine, has simple preparation environment and is suitable for general mechanical testing laboratories; the utility model adopts the high-power quartz glass heating pipe to heat the mould, and the heating efficiency is high; a plurality of quartz glass heating pipes are uniformly distributed on two sides of the mould, and the mould is heated uniformly; in the preparation process, the pressure can be controlled stably by the pressure tester, and the temperature can be controlled stably by the temperature control incubator; the temperature field and the pressure field are uniform and constant, and the produced laminated plate is flat, good in bonding condition and excellent in mechanical property. In addition, the die in the device comprises an upper die and a lower die, a prepreg layer is clamped between the upper die and the lower die to form a sandwich structure, after preparation is finished, the next group of prepared sandwich structure can be immediately transferred to a workbench to prepare the laminated plate, the process operation is simple, manpower and material resources are saved, and the heat utilization rate is high; meanwhile, the device makes full use of the characteristics of good heat conduction efficiency and small thickness of the thermoplastic composite laminated plate, two mould pressing cavities are formed by arranging thin aluminum sheets in the upper mould and the lower mould, and two laminated plates can be prepared in one mould pressing process, so that the preparation efficiency is obviously improved. .
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An apparatus for preparing a fiber reinforced thermoplastic composite laminated plate is characterized by comprising a pressurizing device, a heating device, a heat preservation and insulation device and a mold;
the pressurizing device comprises a pressure testing machine and a rectangular metal block, wherein the rectangular metal block comprises an upper metal block and a lower metal block which are arranged in parallel; the upper metal block is fixed below a cross beam of the compression testing machine through a steel chain, and the lower metal block is placed on a platform of the compression testing machine; the lower surface of the upper metal block and the upper surface of the lower metal block are both provided with a plurality of rectangular long grooves;
the heating device comprises a quartz glass heating pipe and a temperature control incubator; the quartz glass heating pipe is arranged in the rectangular long grooves on the upper metal block and the lower metal block, and the temperature control incubator is electrically connected with the quartz glass heating pipe and used for controlling the working state of the quartz glass heating pipe;
the heat preservation and insulation device is arranged on the upper surface of the upper metal block and the lower surface of the lower metal block and is used for keeping the preparation temperature of the laminated plate stable and protecting the pressurizing device;
the mould sets up between last metal block and the lower metal block for heat conduction and pressure guarantee that preimpregnation material is level and smooth and bond reliably.
2. The apparatus of claim 1, wherein the mold comprises an upper mold and a lower mold forming a molding cavity therebetween for sandwiching the prepreg layer.
3. The apparatus for manufacturing a fiber reinforced thermoplastic composite laminate according to claim 2, wherein an aluminum sheet is disposed between the upper mold and the lower mold for forming two molding cavities, thereby improving manufacturing efficiency.
4. The apparatus of claim 2, wherein four threaded holes are symmetrically distributed on both sides of the upper and lower dies, and screws are fixed in the threaded holes to facilitate moving the dies.
5. The apparatus according to claim 2, wherein the upper mold and the lower mold are respectively provided with temperature measuring holes at both sides thereof, and a temperature sensitive sensor is disposed in the temperature measuring holes and electrically connected to the temperature control box for real-time monitoring of the mold temperature.
6. The apparatus of claim 1, wherein the thermal insulation means comprises rectangular mica boards and quartz wool; the rectangular mica plates are arranged in two pairs, one pair is arranged at the upper part of the upper metal block, and the other pair is arranged on the machine testing platform and positioned at the lower part of the lower metal block and used for heat preservation and insulation; the quartz wool is placed at the position where the quartz glass heating pipe extends out of the rectangular metal block and is used for protecting the pressurizing device.
7. The apparatus for manufacturing a fiber reinforced thermoplastic composite laminate according to claim 1, wherein the upper metal block is provided at both sides with metal sheets for preventing the quartz glass heating tube from falling off.
8. The apparatus of claim 1, wherein the tool is a stainless steel flat plate tool.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121313105.4U CN215243003U (en) | 2021-06-11 | 2021-06-11 | Device for preparing fiber reinforced thermoplastic composite material laminated plate |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121313105.4U CN215243003U (en) | 2021-06-11 | 2021-06-11 | Device for preparing fiber reinforced thermoplastic composite material laminated plate |
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| CN215243003U true CN215243003U (en) | 2021-12-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889164A (en) * | 2022-05-09 | 2022-08-12 | 福州大学 | Composite material tape and laminated plate structure prestress regulating device |
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2021
- 2021-06-11 CN CN202121313105.4U patent/CN215243003U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114889164A (en) * | 2022-05-09 | 2022-08-12 | 福州大学 | Composite material tape and laminated plate structure prestress regulating device |
| CN114889164B (en) * | 2022-05-09 | 2023-11-21 | 福州大学 | Composite tape and laminated board structure prestress regulating device |
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