A rapid prototyping method for fabric-reinforced thermoplastic composite materials

Abstract

The present invention provides a rapid prototyping method for fabric-reinforced thermoplastic composite materials, and relates to the technical field of thermoplastic composite materials. The present invention performs molding (hot pre-pressing, hot pressing-exhausting and cold pressing) after laying high-temperature-resistant demoulding cloth, high-temperature release film and heat-conducting metal plate on both sides of the preform respectively and in sequence, which is equivalent to molding the preform in an open, unlimited mold, which greatly shortens the molding time and improves the production efficiency of fabric-reinforced thermoplastic composite materials. Moreover, the presence of high-temperature-resistant demoulding cloth and high-temperature release film provides an air-conducting passage for the subsequent hot pressing-exhausting process, thereby reducing the porosity of the fabric-reinforced thermoplastic composite material, effectively avoiding the consolidation deformation of the fabric-reinforced thermoplastic composite material during the molding process, and improving the surface quality and internal quality of the fabric-reinforced thermoplastic composite material. At the same time, the presence of high-temperature-resistant demoulding cloth and high-temperature release film is also beneficial to the subsequent demoulding.

Description

Technical Field

[0001] The invention relates to the technical field of thermoplastic composite materials, and in particular to a rapid prototyping method for a fabric-reinforced thermoplastic composite material. Background Art

[0002] Continuous fiber reinforced high-performance thermoplastic composites not only have the advantages of thermosetting resin-based composites such as light weight, high specific strength and specific stiffness, and strong designability, but also have high impact strength, can be welded, repaired, and easy to store. Using such materials to partially replace metal and thermosetting composite parts can effectively improve weight reduction efficiency and reduce manufacturing costs.

[0003] The molding technology of continuous fiber reinforced high-performance thermoplastic composites is an important factor restricting its development. The main reasons are as follows: First, high-performance thermoplastic resins have high processing temperatures and melt viscosities; second, high-performance thermoplastic prepregs are different from thermosetting prepregs. They have higher stiffness and hardness at room temperature and poor draping properties; third, the process system of the temperature rise and fall stages of the molding process will have a greater impact on the internal defects and crystallization behavior of thermoplastic composites. The traditional molding method of thermoplastic composites is to place continuous fiber reinforced thermoplastic resin prepregs in a mold for molding.

[0004] For example, Chinese patent CN1603363A discloses the preparation of a type of continuous fiber reinforced polyarylethersulfoneketone advanced composite material, in which the cut prepreg sheets are placed in a mold and hot-pressed; the main process parameters of the hot-pressing process are as follows: cold pressing: 30MPa / 2~10min→preheating: 380℃ / 40~90min→hot pressing: 30MPa / 380℃ / 40~90min, and the molding time is long and the production efficiency is low. Summary of the invention

[0005] In view of this, an object of the present invention is to provide a rapid prototyping method for a fabric-reinforced thermoplastic composite material. The prototyping method provided by the present invention is time-saving and has high production efficiency.

[0006] In order to achieve the above-mentioned object of the invention, the present invention provides the following technical solutions:

[0007] The present invention provides a rapid prototyping method for a fabric-reinforced thermoplastic composite material, comprising the following steps:

[0008] A fiber fabric reinforced thermoplastic resin preform is provided; the thermoplastic resin in the fiber fabric reinforced thermoplastic resin preform comprises at least one of a semi-crystalline resin and an amorphous resin;

[0009] High temperature resistant demoulding cloth, high temperature release film and heat conductive metal plate are laid on both sides of the preform respectively, and then hot pre-pressing, hot pressing-exhaust and cold pressing are carried out in sequence to obtain a fabric reinforced thermoplastic composite material; the hot pre-pressing time is 3 to 15 minutes; the hot pressing time in the hot pressing-exhaust is 10 to 30 minutes; the cold pressing time is 3 to 20 minutes.

[0010] Preferably, the fiber fabric in the fiber fabric reinforced thermoplastic resin preform comprises at least one of carbon fiber fabric, glass fiber fabric, quartz fiber fabric, polyimide fiber fabric and aramid fiber fabric;

[0011] The volume content of the fiber fabric in the fiber fabric reinforced thermoplastic resin preform is 40-65%.

[0012] Preferably, the semi-crystalline resin includes at least one of polyetheretherketone, polyaryletherketone, polyphenylene sulfide, polyamide and polypropylene.

[0013] Preferably, the amorphous resin includes at least one of polyimide, polycarbonate, acrylonitrile-butadiene-styrene copolymer, polyvinyl chloride and polyethylene.

[0014] Preferably, the fiber fabric reinforced thermoplastic resin preform is composed of fiber fabric reinforced thermoplastic resin prepregs stacked in layers;

[0015] The thickness of the single-layer fiber fabric reinforced thermoplastic resin prepreg is 0.1 to 0.3 mm.

[0016] Preferably, the temperature of the hot pre-pressing is 20 to 60° C. above the melting temperature of the semi-crystalline resin or 10 to 60° C. above the viscosity flow temperature of the amorphous resin, and the pressure is 0.1 to 0.8 MPa.

[0017] Preferably, the working parameters of the hot pressing-exhaust include: the hot pressing temperature is 10 to 50°C above the melting temperature of the semi-crystalline resin or 10 to 50°C above the viscosity flow temperature of the amorphous resin, the hot pressing pressure is 0.5 to 15 MPa, and the exhaust times are 10 to 50 times.

[0018] Preferably, when the thermoplastic resin is a semi-crystalline resin, the hot pressing-exhausting further includes molding; the molding temperature is the crystallization temperature of the semi-crystalline resin, the pressure is 1-15 MPa, and the time is 3-20 min.

[0019] Preferably, the cold pressing temperature is room temperature and the pressure is 1-15 MPa.

[0020] Preferably, the heat-conducting metal plate includes an aluminum plate, a stainless steel plate or an iron plate.

[0021] The present invention provides a rapid prototyping method for a fabric-reinforced thermoplastic composite material, comprising the following steps: providing a fiber fabric-reinforced thermoplastic resin preform; the thermoplastic resin in the fiber fabric-reinforced thermoplastic resin preform comprises at least one of a semi-crystalline resin and an amorphous resin; laying a high-temperature-resistant demoulding cloth, a high-temperature release film and a heat-conducting metal plate on both sides of the preform in sequence, and then performing hot pre-pressing, hot pressing-exhausting and cold pressing in sequence to obtain a fabric-reinforced thermoplastic composite material; the hot pre-pressing time is 3 to 15 minutes; the hot pressing time in the hot pressing-exhausting is 10 to 30 minutes; the cold pressing time is 3 to 20 minutes. Compared with the traditional molding method in a mold, the present invention performs molding (hot pre-pressing, hot pressing-exhausting and cold pressing) after laying a high-temperature-resistant demoulding cloth, a high-temperature release film and a heat-conducting metal plate on both sides of the preform in sequence, which is equivalent to molding the preform in an open, unlimited mold, repeatedly degassing, greatly shortening the molding time, and improving the production efficiency of the fabric-reinforced thermoplastic composite material. Moreover, the presence of high temperature resistant release cloth and high temperature release film provides an air guide path for the hot pressing-exhaust process, thereby reducing the porosity of the fabric reinforced thermoplastic composite material, effectively avoiding the consolidation deformation of the fabric reinforced thermoplastic composite material during the molding process, and improving the surface quality and internal quality of the fabric reinforced thermoplastic composite material. At the same time, the presence of high temperature resistant release cloth and high temperature release film is also beneficial to the subsequent demolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic diagram of double-sided stacking of preforms, wherein 1 is a heat-conducting metal plate, 2 is a high-temperature release film, 3 is a high-temperature-resistant release cloth, and 4 is a preform;

[0023] Figure 2 This is a physical picture of carbon fiber fabric reinforced polyaryletherketone thermoplastic composite material. DETAILED DESCRIPTION

[0024] The present invention provides a rapid prototyping method for a fabric-reinforced thermoplastic composite material, comprising the following steps:

[0025] A fiber fabric reinforced thermoplastic resin preform is provided; the thermoplastic resin in the fiber fabric reinforced thermoplastic resin preform comprises at least one of a semi-crystalline resin and an amorphous resin;

[0026] High temperature resistant demoulding cloth, high temperature release film and heat conductive metal plate are laid on both sides of the preform respectively, and then hot pre-pressing, hot pressing-exhaust and cold pressing are carried out in sequence to obtain a fabric reinforced thermoplastic composite material; the hot pre-pressing time is 3 to 15 minutes; the hot pressing time in the hot pressing-exhaust is 10 to 30 minutes; the cold pressing time is 3 to 20 minutes.

[0027] In the present invention, unless otherwise specified, all raw material components are commercially available products well known to those skilled in the art.

[0028] The present invention provides a fiber fabric reinforced thermoplastic resin preform; the thermoplastic resin in the fiber fabric reinforced thermoplastic resin preform comprises at least one of a semi-crystalline resin and an amorphous resin.

[0029] In the present invention, the semi-crystalline resin preferably includes at least one of polyetheretherketone (PEEK), polyaryletherketone (PAEK), polyphenylene sulfide (PPS), polyamide (PA) and polypropylene (PP); the crystallinity of the semi-crystalline resin is preferably 10-60%, more preferably 20-60%. In the present invention, the amorphous resin includes at least one of polyimide (PI), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), polyvinyl chloride (PVC) and polyethylene (PE). In the present invention, the fiber fabric in the fiber fabric reinforced thermoplastic resin preform preferably includes at least one of carbon fiber fabric, glass fiber fabric, quartz fiber fabric, polyimide fiber fabric and aramid fiber fabric. In a specific embodiment of the present invention, the fiber fabric reinforced thermoplastic resin prepreg preferably includes carbon fiber fabric reinforced polyaryletherketone prepreg, glass fiber fabric reinforced polyetheretherketone prepreg, carbon fiber fabric reinforced polyimide prepreg, carbon fiber fabric reinforced polyphenylene sulfide prepreg, carbon fiber fabric reinforced polycarbonate prepreg, carbon fiber fabric reinforced polyamide prepreg, carbon fiber reinforced acrylonitrile-butadiene-styrene copolymer prepreg or carbon fiber fabric reinforced polypropylene prepreg. In the present invention, the volume content of the fiber fabric in the fiber fabric reinforced thermoplastic resin preform is preferably 45-60%, more preferably 50-55%. The present invention has no special restrictions on the shape and size of the fiber fabric reinforced thermoplastic resin prepreg, which can be set according to the actual needs of the fabric reinforced thermoplastic composite material.

[0030] In the present invention, the fiber fabric reinforced thermoplastic resin preform is preferably composed of stacked fiber fabric reinforced thermoplastic resin prepregs; the thickness of a single layer of fiber fabric reinforced thermoplastic resin prepreg is preferably 0.10 to 0.30 mm, more preferably 0.12 to 0.28 mm. The present invention does not specifically limit the number of layers of fiber fabric reinforced thermoplastic resin prepreg in the preform, which can be determined according to actual needs, such as 5 to 20 layers, more preferably 7 to 18 layers. In the present invention, in the stacking process, it is preferred that the laying mode of any layer of fiber fabric reinforced thermoplastic resin prepreg is 0° (i.e., the fiber warp direction is 0°), and the laying mode of other fiber fabric reinforced thermoplastic resin prepregs is preferably -45° to 90°, more preferably at least one of -45°, 0°, 45° and 90°, and further preferably 0° or 45° / -45°.

[0031] After obtaining the preform, the present invention sequentially lays a high-temperature resistant release cloth, a high-temperature release film and a heat-conducting metal plate on both sides of the preform, and then sequentially performs hot pre-pressing, hot pressing-exhaust and cold pressing to obtain a fabric-reinforced thermoplastic composite material; the hot pre-pressing time is 3 to 15 minutes; the hot pressing time in the hot pressing-exhaust is 10 to 30 minutes; and the cold pressing time is 3 to 20 minutes.

[0032] In the present invention, high temperature resistant release cloth, high temperature release film and heat conductive metal plate are sequentially laid on both sides of the preform, and the schematic diagram of the laying method is as follows: Figure 1 As shown, 1 is a heat-conducting metal plate, 2 is a high-temperature release film, 3 is a high-temperature-resistant release cloth, and 4 is a preform. In the present invention, the heat-conducting metal plate preferably includes an aluminum plate, a stainless steel plate or an iron plate, and more preferably a stainless steel plate.

[0033] In the present invention, the temperature of the hot pre-pressing is the melting temperature (T m ) or above 20 to 60°C (more preferably 20 to 55°C above the melting temperature, and still more preferably 20 to 50°C above the melting temperature) or the viscosity flow temperature (T f ) above 10 to 60°C (more preferably 10 to 55°C above the viscous flow temperature, and further preferably 10 to 50°C above the viscous flow temperature), the temperature of the hot prepressing is preferably 230 to 360°C; the pressure of the hot prepressing is preferably 0.1 to 0.8 MPa, and more preferably 0.3 to 0.5 MPa; the time of the hot prepressing is 3 to 15 min, and more preferably 5 to 10 min. In the present invention, the hot prepressing is preferably carried out in a high temperature press.

[0034] In the present invention, the working parameters of hot pressing in the hot pressing-exhaust preferably include: the temperature of hot pressing is preferably 10-50°C above the melting temperature of semi-crystalline resin (more preferably 10-45°C above the melting temperature, and more preferably 10-40°C above the melting temperature) or 10-50°C above the viscosity flow temperature of amorphous resin (more preferably 10-45°C above the viscosity flow temperature, and more preferably 10-40°C above the viscosity flow temperature), and the temperature of hot pressing is specifically preferably 220-350°C; the pressure of hot pressing is preferably 1-15MPa, more preferably 0.5-10MPa, and more preferably 0.5-5MPa; the number of exhaust times is preferably 10-50 times, more preferably 10-30 times, and more preferably 10-25 times; the hot pressing-exhaust is preferably carried out in a high temperature press. In the present invention, the hot pressing and exhaust are carried out alternately, and the exhaust is carried out under the opening and closing action of the high temperature press.

[0035] In the present invention, when the thermoplastic resin is a semi-crystalline resin, the hot pressing-exhausting preferably further comprises molding; the molding temperature is preferably the crystallization temperature (T c ), specifically preferably 165-285°C, the molding pressure is preferably 1-15MPa, more preferably 1-5MPa, and further preferably 2-3MPa; the molding time is preferably 3-20min, more preferably 3-15min, and further preferably 5-10min. In the present invention, the molding is preferably performed in a press, and the press is preferably preheated to the molding temperature before molding.

[0036] In the present invention, the temperature of the cold pressing is preferably room temperature; the pressure of the cold pressing is preferably 1 to 15 MPa, more preferably 2 to 5 MPa; the time of the cold pressing is 3 to 20 min, preferably 3 to 10 min, and more preferably 3 to 5 min. In the present invention, the cold pressing is preferably performed in a room temperature press. The present invention improves the surface quality and internal quality of the composite material and the molding efficiency of the composite material by repeated exhaust and two rapid moldings (cold pressing and hot pressing).

[0037] After the cold pressing is completed, the present invention preferably further comprises demoulding, wherein the demoulding comprises removing the heat-conducting metal plate, the high-temperature release film and the high-temperature resistant demoulding cloth in the cold-pressed material in sequence to obtain a fabric-reinforced thermoplastic composite material. The present invention has no particular limitation on the demoulding method, provided that the fabric-reinforced thermoplastic composite material is not damaged.

[0038] The technical solutions in the present invention will be described clearly and completely below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Example 1

[0040] A single-layer carbon fiber fabric-reinforced polyaryletherketone prepreg (carbon fiber fabric volume content of 50%) with a single layer thickness of 0.28 mm was laid up in a 0° plying manner to obtain a preform 4; a high-temperature-resistant release cloth 3, a high-temperature release film 2 and a stainless steel plate 1 were sequentially laid on both sides of the preform 4, and the whole was transferred to a high-temperature press, and hot pre-pressed at 360°C and 0.5MPa for 10 minutes, and then hot pressed at 350°C and 2MPa for 10 minutes. During the hot pressing process, the high-temperature press reacted The mold was opened and closed 15 times for exhaust, and then quickly transferred to a press with a preset temperature of 270°C, molded at 270°C and 2MPa for 5 minutes, and quickly transferred to a room temperature press as a whole, cold pressed at room temperature and 2MPa for 5 minutes, taken out from the room temperature press, the stainless steel plate 1 was removed, the high-temperature release film 2 and the high-temperature resistant release cloth 3 were torn off, and a carbon fiber fabric reinforced polyaryletherketone thermoplastic composite material (thickness 1.96 mm, size 100×300 mm, crystallinity 30%) was obtained.

[0041] Example 2

[0042] A single-layer carbon fiber fabric-reinforced polyetheretherketone prepreg (carbon fiber fabric volume content of 55%) with a thickness of 0.12 mm was stacked in 18 layers in an orthogonal ply manner (45° / -45°) to obtain a preform 4; a high-temperature-resistant release cloth 3, a high-temperature release film 2 and a stainless steel plate 1 were stacked on both sides of the preform 4, and the whole was transferred to a high-temperature press, and hot pre-pressed at 360°C and 0.5MPa for 10 minutes, and then hot pressed at 350°C and 2MPa for 10 minutes. During the hot pressing process, the high-temperature press was reversed. The mold was opened and closed 25 times for exhaust, and then the whole was quickly transferred to a press with a preset temperature of 285°C, and molded at 285°C and 2MPa for 10 minutes. The whole was then quickly transferred to a room temperature press, and cold pressed at room temperature and 2MPa for 5 minutes. The mold was taken out from the room temperature press, the stainless steel plate 1 was removed, the high-temperature release film 2 and the high-temperature resistant release cloth 3 were torn off, and a carbon fiber fabric reinforced polyetheretherketone thermoplastic composite material (thickness 2.16 mm, size 100×300 mm, crystallinity 33%) was obtained.

[0043] Example 3

[0044] 18 layers of carbon fiber fabric reinforced polyphenylene sulfide prepreg with a single layer thickness of 0.26 mm (the volume content of carbon fiber fabric is 50%) are stacked in an orthogonal ply manner (45° / -45°) to obtain a preform 4; a high temperature resistant release cloth 3, a high temperature release film 2 and a stainless steel plate 1 are stacked on both sides of the preform 4, and the whole is transferred to a high temperature press, and hot pre-pressed at 320°C and 0.5MPa for 10 minutes, and hot pressed at 310°C and 3MPa for 10 minutes. During the hot pressing process, the high temperature press The press was opened and closed repeatedly for 25 times to exhaust air, and then the whole was quickly transferred to a press with a preset temperature of 210°C, and molded for 10 minutes at 210°C and 2MPa. The whole was quickly transferred to a room temperature press, and cold pressed for 5 minutes at room temperature and 3MPa. The press was taken out from the room temperature press, the stainless steel plate 1 was removed, the high-temperature release film 2 and the high-temperature resistant release cloth 3 were torn off, and a carbon fiber fabric reinforced polyphenylene sulfide thermoplastic composite material (thickness 5.04 mm, size 100×300 mm, crystallinity 60%) was obtained.

[0045] Example 4

[0046] A single-layer carbon fiber fabric reinforced polyimide prepreg with a thickness of 0.26 mm (the volume content of carbon fiber fabric is 50%) is stacked in 18 layers in an orthogonal ply manner (45° / -45°) to obtain a preform 4; a high-temperature resistant release cloth 3, a high-temperature release film 2 and a stainless steel plate 1 are stacked on both sides of the preform 4, and the whole is transferred to a high-temperature press, hot pre-pressed at 330°C and 0.5MPa for 10 minutes, and hot pressed at 320°C and 3MPa for 10 minutes. During the hot pressing process, the high-temperature press is repeatedly opened and closed 25 times for exhaust, and then the whole is quickly transferred to a room temperature press, cold pressed at room temperature and 3MPa for 5 minutes, taken out from the room temperature press, the stainless steel plate 1 is removed, the high-temperature release film 2 and the high-temperature resistant release cloth 3 are torn off, and a carbon fiber fabric reinforced polyimide thermoplastic composite material (thickness 2.16 mm, size 100×300 mm, amorphous material) is obtained.

[0047] Example 5

[0048] A single-layer carbon fiber fabric reinforced polyamide prepreg (polyamide is PA6, and the volume content of carbon fiber fabric is 50%) with a thickness of 0.26 mm is stacked in 18 layers in an orthogonal ply manner (45° / -45°) to obtain a preform 4; a high-temperature resistant release cloth 3, a high-temperature release film 2 and a stainless steel plate 1 are stacked on both sides of the preform 4, and the whole is transferred to a high-temperature press, and hot pre-pressed at 250°C and 0.5MPa for 10 minutes, and hot pressed at 240°C and 3MPa for 10 minutes. During the hot pressing process, The high-temperature press was repeatedly opened and closed 25 times for exhaust, and then the whole was quickly transferred to a press with a preset temperature of 168°C, and molded for 10 minutes at 168°C and 3MPa. The whole was quickly transferred to a room temperature press, and cold pressed for 5 minutes at room temperature and 3MPa. The press was taken out of the room temperature press, the stainless steel plate 1 was removed, the high-temperature release film 2 and the high-temperature resistant release cloth 3 were torn off, and a carbon fiber fabric reinforced polyamide thermoplastic composite material (thickness 5.04 mm, size 100×300 mm, crystallinity 33%) was obtained.

[0049] Example 6

[0050] A single-layer carbon fiber fabric reinforced polycarbonate prepreg with a thickness of 0.26 mm (the volume content of carbon fiber fabric is 50%) is stacked in 18 layers in an orthogonal ply manner (45° / -45°) to obtain a preform 4; a high-temperature resistant release cloth 3, a high-temperature release film 2 and a stainless steel plate 1 are stacked on both sides of the preform 4, and the whole is transferred to a high-temperature press, hot pre-pressed at 310°C and 0.5MPa for 10 minutes, and hot pressed at 300°C and 3MPa for 10 minutes. During the hot pressing process, the high-temperature press is repeatedly opened and closed 25 times for exhaust, and then the whole is quickly transferred to a room temperature press, cold pressed at room temperature and 3MPa for 5 minutes, taken out from the room temperature press, the stainless steel plate 1 is removed, the high-temperature release film 2 and the high-temperature resistant release cloth 3 are torn off, and a carbon fiber fabric reinforced polycarbonate thermoplastic composite material (thickness 2.16 mm, size 100×300 mm, amorphous material) is obtained.

[0051] Example 7

[0052] A single-layer carbon fiber fabric reinforced acrylonitrile-butadiene-styrene copolymer prepreg (carbon fiber fabric volume content is 50%) with a single layer thickness of 0.26 mm is stacked in 18 layers in an orthogonal ply manner (45° / -45°) to obtain a preform 4; a high-temperature resistant demoulding cloth 3, a high-temperature release film 2 and a stainless steel plate 1 are stacked on both sides of the preform 4, and the whole is transferred to a high-temperature press, hot pre-pressed at 230°C and 0.5MPa for 10 minutes, and hot pressed at 220°C and 3MPa for 10 minutes. During the hot pressing process, the high-temperature press is repeatedly opened and closed 25 times for exhaust, and then the whole is quickly transferred to a room temperature press, cold pressed at room temperature and 3MPa for 5 minutes, taken out from the room temperature press, the stainless steel plate 1 is removed, the high-temperature release film 2 and the high-temperature resistant demoulding cloth 3 are torn off, and a carbon fiber fabric reinforced acrylonitrile-butadiene-styrene copolymer thermoplastic composite material (thickness 2.16 mm, size 100×300 mm, amorphous material) is obtained.

[0053] Example 8

[0054] 18 layers of carbon fiber fabric reinforced polypropylene prepreg with a single layer thickness of 0.26 mm (the volume content of carbon fiber fabric is 50%) are stacked in an orthogonal ply manner (45° / -45°) to obtain a preform 4; a high temperature resistant demoulding cloth 3, a high temperature release film 2 and a stainless steel plate 1 are stacked on both sides of the preform 4, and the whole is transferred to a high temperature press, and hot pre-pressed at 230°C and 0.5MPa for 10 minutes, and hot pressed at 220°C and 3MPa for 10 minutes. During the hot pressing process, the high temperature press The press was opened and closed repeatedly for 25 times to exhaust air, and then the whole was quickly transferred to a press with a preset temperature of 165°C, and molded for 10 minutes at 165°C and 3MPa. The whole was quickly transferred to a room temperature press, and cold pressed for 5 minutes at room temperature and 3MPa. The press was taken out from the room temperature press, the stainless steel plate 1 was removed, the high-temperature release film 2 and the high-temperature resistant release cloth 3 were torn off, and a carbon fiber fabric reinforced polypropylene thermoplastic composite material (thickness 5.04 mm, size 100×300 mm, crystallinity 50%) was obtained.

[0055] Test Example 1

[0056] The performance test results of the carbon fiber fabric reinforced polyaryletherketone thermoplastic composite material prepared in the embodiment are shown in Table 1:

[0057] Table 1 Performance test results of carbon fiber fabric reinforced polyaryletherketone thermoplastic composite material prepared in Example 1

[0058] performance Test Standards Test value Warp tensile strength / MPa ASTMD3039 732 Warp tensile modulus / GPa ASTMD3039 60 Warp compression strength / MPa ASTMD6641 569 Warp compression modulus / GPa ASTMD6641 65 Interlaminar shear strength / MPa ASTMD2344 87 Warp bending strength / MPa ASTMD7264 793 Warp bending modulus / MPa ASTMD7264 58

[0059] As can be seen from Table 1, the carbon fiber fabric reinforced polyaryletherketone thermoplastic composite material prepared by the present invention has a warp tensile strength of 732 MPa, a warp tensile modulus of 60 GPa, a warp compressive strength of 569 MPa, a warp compressive modulus of 65 GPa, an interlaminar shear strength of 87 MPa, a warp bending strength of 793 MPa, and a warp bending modulus of 58 MPa, indicating that the fabric reinforced thermoplastic composite material prepared by the present invention has excellent mechanical properties.

[0060] Figure 2 This is a physical picture of the carbon fiber fabric reinforced polyaryletherketone thermoplastic composite material prepared in Example 1. Figure 2 It can be seen that the carbon fiber fabric reinforced polyaryletherketone thermoplastic composite material prepared in the present invention is flat and has no warping or deformation phenomenon.

[0061] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A rapid prototyping method for a fabric-reinforced thermoplastic composite material, comprising the following steps: Providing a fiber fabric reinforced thermoplastic resin preform; The thermoplastic resin in the fiber fabric reinforced thermoplastic resin preform includes at least one of a semi-crystalline resin and an amorphous resin; the fiber fabric reinforced thermoplastic resin preform is composed of stacked fiber fabric reinforced thermoplastic resin prepregs; the thickness of a single layer of fiber fabric reinforced thermoplastic resin prepreg is 0.10-0.30 mm, and the number of layers of the fiber fabric reinforced thermoplastic resin prepreg is 5-20; A high temperature-resistant demoulding cloth, a high temperature release film and a heat-conducting metal plate are sequentially laid on both sides of the preform, and then hot pre-pressing, hot pressing-exhausting and cold pressing are sequentially performed to obtain a fabric-reinforced thermoplastic composite material; the hot pre-pressing time is 3 to 15 minutes; the hot pressing time in the hot pressing-exhausting process is 10 to 30 minutes; and the cold pressing time is 3 to 20 minutes; The fiber fabric in the fiber fabric reinforced thermoplastic resin preform includes at least one of carbon fiber fabric, glass fiber fabric, quartz fiber fabric, polyimide fiber fabric and aramid fiber fabric; The volume content of the fiber fabric in the fiber fabric reinforced thermoplastic resin preform is 40-65%; The semi-crystalline resin includes at least one of polyetheretherketone, polyaryletherketone, polyphenylene sulfide, polyamide and polypropylene; The amorphous resin includes at least one of polyimide, polycarbonate, acrylonitrile-butadiene-styrene copolymer, polyvinyl chloride and polyethylene; The temperature of the hot pre-pressing is 20-60°C above the melting temperature of the semi-crystalline resin or 10-60°C above the viscosity flow temperature of the amorphous resin, and the pressure is 0.1-0.8MPa; The working parameters of the hot pressing-exhaust include: the hot pressing temperature is 10-50°C above the melting temperature of the semi-crystalline resin or 10-50°C above the viscosity flow temperature of the amorphous resin, the hot pressing pressure is 0.5-15MPa, and the exhaust times are 10-50 times; When the thermoplastic resin is a semi-crystalline resin, the hot pressing-exhausting further comprises molding; the molding temperature is the crystallization temperature of the semi-crystalline resin, the pressure is 1-15 MPa, and the time is 3-20 min; The temperature of the cold pressing is room temperature, and the pressure is 1-15 MPa.

2. The method according to claim 1, characterized in that The heat-conducting metal plate includes an aluminum plate, a stainless steel plate or an iron plate.

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