CN114953428A - 4D printing method of programmable continuous fiber composite material intelligent structure - Google Patents
4D printing method of programmable continuous fiber composite material intelligent structure Download PDFInfo
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Classifications
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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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/10—Processes of additive manufacturing
-
- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/20—Apparatus for additive manufacturing; Details thereof or accessories therefor
- B29C64/295—Heating elements
-
- 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
- B29C64/00—Additive manufacturing, i.e. manufacturing of three-dimensional [3D] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3D printing, stereolithography or selective laser sintering
- B29C64/30—Auxiliary operations or equipment
- B29C64/386—Data acquisition or data processing for additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y30/00—Apparatus for additive manufacturing; Details thereof or accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
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- Chemical & Material Sciences (AREA)
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- Materials Engineering (AREA)
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Abstract
The invention discloses a 4D printing method of a programmable continuous fiber composite material intelligent structure. The intelligent structure designed according to the 4D printing method comprises a continuous fiber composite material layer and a micro-nano conducting circuit, wherein the conducting circuit is located between the continuous fiber composite material layers, and the continuous fiber composite material and the conducting circuit are integrally formed by 4D printing.
Description
Technical Field
The invention relates to the technical field of 4D printing, in particular to a 4D printing method of a programmable continuous fiber composite material intelligent structure.
Background
In recent years, 4D printing methods and related materials and technologies have been rapidly developed, and a 4D printing method for continuous fiber composite materials has appeared, and the method can enable the composite materials to have the capability of thermally induced deformation by using a means of embedding continuous fibers into a flexible matrix. The control of the continuous fiber direction is more convenient and accurate than the control of the short fiber direction, and the high-performance fiber reinforced composite material has the characteristics of high specific strength, high specific modulus, strong designability, realization of multifunctional fusion and the like, and is widely applied to the fields of aerospace and the like, so that the 4D printing method of the composite material intelligent structure not only has important scientific value, but also has important national defense strategic significance.
However, a printed product prepared by the existing continuous fiber composite material 4D printing method can only generate single deformation action, and can not realize programmable deformation of multiple actions and complex structures of the composite material, so that the continuous fiber composite material 4D printed product is difficult to meet the requirements of programmable fine complicated intelligent structure manufacturing. For example, patent CN108943701A discloses a 4D printing method for embedding continuous fibers into a composite material with controllable deformation, which solves the principal curvature and principal curvature line of a curved surface to be deformed, further solves the fiber trajectory line, prints a material composed of resin and continuous fibers according to the path obtained by the solution, and performs heat treatment on the printed matter, so that the composite material can be deformed into an expected shape.
Disclosure of Invention
To overcome the disadvantages of the prior art, it is an object of the present invention to provide a method of 4D printing of programmable continuous fiber composite intelligent structures. The 4D printing method for correspondingly designing the intelligent structure of the programmable continuous fiber composite material is combined with the thermotropic deformation characteristic and micro-nano manufacturing printing of the continuous fiber composite material, when the thermal expansion coefficients of continuous fibers and a base material are greatly different, the thermotropic deformation of the composite material structure can be realized, conductive circuits are printed among layers of the continuous fiber composite material, the power-on sequence of the conductive circuits of each part and the arrangement of the conductive circuits of a deformation part are changed, the deformation rate and the deformation sequence of a deformation body are controlled, and the programmable deformation of the complex structure of the continuous fiber composite material is realized.
In order to achieve the above object, the present invention provides a 4D printing method of a programmable continuous fiber composite intelligent structure. The method comprises the following steps:
(1) establishing a three-dimensional model of the continuous fiber composite material structure by using computer aided design software according to the size of the deformable body structure;
(2) according to the deformation characteristics of the deformation part, dividing the continuous fiber composite material intelligent structure into sub-regions, and selecting a continuous fiber composite material or a pure matrix material for the sub-regions;
(3) designing the shape of the conductive circuit according to the shape characteristics, the deformation rate and the deformation angle of the deformed part;
(4) selecting different printing nozzles according to different materials of each region, designing corresponding process parameters, planning a printing path according to the direction of the fiber and the conducting circuit, and generating a data file matched with a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer;
(5) importing the data file obtained in the step (4) into a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer, and finishing 3D printing integrated forming according to division of each region and material selection;
(6) according to the deformation sequence of the deformation parts, the deformation parts are sequentially electrified to generate joule heat, because the heating sequence of each part is different, each part completes bending deformation according to the preset sequence, and the arrangement mode and the layer number of the conducting circuits are different, so that different deformation rates and deformation angles of the deformation parts are realized.
In some embodiments of the present application, the continuous fiber is one or more of carbon fiber, aramid fiber, polyethylene fiber, glass fiber, basalt fiber, polyimide fiber, metal fiber, SiC fiber, conductive polymer fiber, poly-p-phenylene benzobisoxazole fiber, boron fiber, graphite fiber, silicon nitride fiber, jute fiber, ramie fiber, flax fiber, and bamboo fiber.
In some embodiments of the present application, the matrix material is PLA, PEEK, PI, PEI, ABS, polyvinyl chloride, polyethylene, polypropylene, acetal, acrylic, ethylene ethyl acrylate, nylon, phenolic, polystyrene, polyurethane, polyvinylidene fluoride, styrene butadiene rubber, nitrile butadiene rubber, silicone rubber, fluoro rubber, butadiene rubber, isoprene rubber, ethylene propylene rubber, neoprene rubber, acrylate system shape memory polymers, thiol-olefin system shape memory polymers, epoxy system shape memory polymers, or low melting point alloys.
In some embodiments of the present application, the conductive line material is a conductive silver paste, a conductive copper paste, a conductive gold paste, a metal nanowire paste.
In some embodiments of the application, the micro-nano 3D printing technology for printing the conductive circuit in step (5) includes an electric field driven jet deposition micro-nano 3D printing technology, aerosol jet printing, physical vapor deposition 3D printing, and chemical vapor deposition 3D printing.
In some embodiments of the application, the computer aided design software in step (1) is Autodesk lnventor, SolidWorks, CATIA, zhongguang 3D, Pro/E, AutoCAD, UG NX, SolidEdge, or Onespace.
In some embodiments of the application, the 3D printing apparatus in the step (5) is a 3-degree-of-freedom or multi-degree-of-freedom continuous fiber reinforced composite and micro-nano manufacturing multifunctional 3D printer.
In some embodiments of the present application, the continuous fiber composite structure is partitioned into regions, and a continuous fiber composite or a pure matrix material is selected for the sub-regions, which may allow for different structural deformations due to different region partitions and different material selection schemes.
In some embodiments of the present application, the number of layers and the arrangement density of the conductive traces are designed in direct proportion to the speed of deformation, that is, the number of layers of the conductive traces with high deformation speed is large, the arrangement is dense, the number of layers of the conductive traces with low deformation speed is small, and the arrangement is sparse.
In some embodiments of the present application, one or more layers of heating circuitry may be printed between 2 layers of continuous fiber composite material, and one or more layers of heating circuitry may be printed between multiple layers of continuous fiber composite material.
The invention has at least the following advantages:
because the thermal expansion coefficients of the continuous fibers and the base material are greatly different, the continuous fiber composite material has the characteristic of thermally induced deformation, the sequence of deformation of all parts of the deformable body is controlled by changing the electrifying sequence of the conductive circuits, and the deformation rate and the deformation angle of the deformed parts are controlled by changing the layer number and the arrangement of the conductive circuits, so that the programmable deformation of the complex structure of the continuous fiber composite material is realized. Meanwhile, the micro-nano size of the conducting circuit can realize accurate control of a deformation part, and the excellent flexibility can adapt to various structural deformation characteristics.
Compared with the existing 4D printing method of the continuous fiber composite material, the method greatly improves the designability of the deformation of the continuous fiber composite material structure, and realizes the programmable deformation of the complex structure of the continuous fiber composite material.
By zoning the continuous fiber composite structure and printing different materials in each zone, different deformation characteristics can be achieved.
The conductive circuits of the deformation parts are sequentially electrified according to a preset sequence to generate Joule heat, and the continuous fiber composite material has thermal deformability, so that the deformation parts are bent and deformed according to a preset sequence.
The heating efficiency of the conductive circuit is different by changing the layer number and the arrangement density of the heating circuit at the deformation part, so that the angle and the speed of bending deformation are controlled.
The 3D printing process of the continuous fiber composite material is adopted, the direction of the continuous fiber is more convenient and accurate to control than that of the short fiber, deformation pieces of different structures can be designed according to the requirements of external environment and bearing capacity, and the designability of the 4D printing intelligent structure is improved.
A micro-nano 3D printing technology is adopted to print a conducting circuit, and a complex graphic structure circuit can be printed at will according to the shape of the continuous fiber composite material structure; and the heating circuit has flexibility, can adapt to various structural deformation characteristics, and has strong adaptability.
Drawings
Fig. 1 is a process flow diagram of a 4D printing method for a programmable continuous fiber composite intelligent structure according to the present invention.
Fig. 2 is a deformation of a sample prepared by the 4D printing method for a programmable continuous fiber composite intelligent structure according to an embodiment of the present invention, where a is an initial state, and b, c, D, and e are deformations of deformation portions 1, 2, 3, and 4 in sequence.
Fig. 3 is a sample prepared by a 4D printing method for a programmable continuous fiber composite intelligent structure according to another embodiment of the present invention.
Fig. 4 is a schematic diagram of 2 samples after deformation in example 2, wherein a is a deformation diagram of sample 1, and b is a deformation diagram of sample 2.
Fig. 5 is a modification of a sample prepared by the 4D printing method for a programmable continuous fiber composite intelligent structure according to embodiment 3 of the present invention.
Fig. 6 is a region partition of a sample prepared by the 4D printing method for the programmable continuous fiber composite intelligent structure according to embodiment 3 of the present invention.
Fig. 7 is a schematic diagram of a printing process of the continuous fiber composite material and the micro-nano manufacturing multifunctional 3D printer according to the present invention.
The printing method comprises the following steps of 100-continuous fibers, 110-wire feeding device, 120-base material, 130-continuous fiber composite material printing nozzle, 140-continuous fiber composite material layer, 150-conducting circuit, 160-micro-nano printing nozzle, 170-alternating current power supply, 180-material storage tank and 190-back pressure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described below with reference to the accompanying drawings and examples. It should be noted that the specific embodiments described herein are only for explaining the present invention and are not used to limit the present invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention.
Referring to the drawing, the specific manufacturing method of the 4D printing method for the programmable continuous fiber composite intelligent structure provided by the invention comprises the following steps:
(1) establishing a three-dimensional model of the continuous fiber composite material structure by using computer aided design software according to the structure size of the variant body;
(2) dividing the continuous fiber composite material intelligent structure into sub-regions according to the deformation characteristics of the deformation part, and selecting a continuous fiber composite material or a pure matrix material for the sub-regions;
(3) designing one or more layers of conductive circuits according to the shape characteristics, the deformation rate and the deformation angle of the deformed part;
(4) selecting different printing nozzles according to different materials of each region, designing corresponding process parameters, planning a printing path according to the direction of the fiber and the conducting circuit, and generating a data file matched with a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer;
(5) importing the data file obtained in the step (4) into a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer, and finishing 3D printing integrated forming according to division of each region and material selection;
(6) according to the deformation sequence of the deformation parts, the deformation parts are sequentially electrified to generate joule heat, because the heating sequence of each part is different, each part completes bending deformation according to the preset sequence, and the arrangement mode and the layer number of the conducting circuits are different, so that different deformation rates and deformation angles of the deformation parts are realized.
The continuous fibers and the matrix material described in the present embodiment have a large coefficient of thermal expansion.
The continuous fiber composite material and the micro-nano manufacturing multifunctional 3D printer in the implementation method have functions of continuous fiber composite material printing and micro-nano printing, the continuous fiber composite material 3D printing mode includes but is not limited to an in-situ melt impregnation extrusion forming method, and a fiber pre-impregnated filament extrusion forming method, for example, dry fiber filaments and polymer resin filament materials can be fed into a printing head through an in-situ impregnation extrusion process, and the continuous fiber composite material printing is completed through extrusion deposition and stacking forming.
In some embodiments of the present application, the continuous fiber is one or more of carbon fiber, aramid fiber, polyethylene fiber, glass fiber, basalt fiber, polyimide fiber, metal fiber, SiC fiber, conductive polymer fiber, poly-p-phenylene benzobisoxazole fiber, boron fiber, graphite fiber, silicon nitride fiber, jute fiber, ramie fiber, flax fiber, and bamboo fiber.
In some embodiments of the present application, the matrix material is PLA, PEEK, PI, PEI, ABS, polyvinyl chloride, polyethylene, polypropylene, acetal, acrylic, ethylene ethyl acrylate, nylon, phenolic, polystyrene, polyurethane, polyvinylidene fluoride, styrene butadiene rubber, nitrile butadiene rubber, silicone rubber, viton, butadiene rubber, isoprene rubber, ethylene propylene rubber, neoprene rubber, acrylate system shape memory polymers, thiol-olefin system shape memory polymers, epoxy system shape memory polymers, or low melting point alloys.
In some embodiments of the present application, the conductive line material is a conductive silver paste, a conductive copper paste, a conductive gold paste, a metal nanowire paste.
In some embodiments of the application, the micro-nano 3D printing technology for printing the heating circuit in step (5) includes an electric field driven jet deposition micro-nano 3D printing technology, aerosol jet printing, physical vapor deposition 3D printing, and chemical vapor deposition 3D printing.
In some embodiments of the present application, the computer aided design software in step (1) is Autodesk lnventor, SolidWorks, CATIA, zhongguang 3D, Pro/E, AutoCAD, UG NX, SolidEdge, or Onespace.
In some embodiments of the present application, the 3D printing equipment in the step (5) is a 3 degree of freedom continuous fiber reinforced composite 3D printer or a multiple degree of freedom continuous fiber reinforced composite 3D printer.
In some embodiments of the present application, the number of layers and the arrangement density of the conductive traces are designed in direct proportion to the speed of deformation, that is, the number of layers of the conductive traces with high deformation speed is large, the arrangement is dense, the number of layers of the conductive traces with low deformation speed is small, and the arrangement is sparse.
In some embodiments of the present application, one or more layers of heating circuitry may be printed between 2 layers of continuous fiber composite material, and one or more layers of heating circuitry may be printed between multiple layers of continuous fiber composite material.
The invention is further illustrated in detail below by means of three examples.
Example 1
The invention provides a 4D printing method of a programmable continuous fiber composite material intelligent structure, and particularly relates to a method 2, which comprises the following steps:
(1) establishing a three-dimensional model of the continuous fiber composite material structure by utilizing SolidWorks according to the structural size of the deformation body;
(2) according to the deformation characteristics of the deformation part, dividing the continuous fiber composite material intelligent structure into a bottom layer and a top layer, wherein the bottom layer is made of pure base materials, and the top layer is made of continuous fiber composite materials;
(3) designing the shape of a conductive circuit and forming 1 layer;
(4) selecting different printing nozzles according to different materials of each region, designing corresponding process parameters, planning a printing path according to the direction of the fiber and the conducting circuit, and generating a data file matched with a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer;
(5) importing the data file obtained in the step (4) into a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer, and finishing 3D printing integrated forming according to division of each region and material selection, as shown in fig. 2 (a);
the continuous fiber is carbon fiber, the matrix material is PLA, the conductive slurry is Konnatong TL-201S, the printing nozzle is a Wucang nozzle with the inner diameter of 200 mu m, and the micro-nano printing technology adopts an electric field driven jet deposition micro-nano 3D printing technology;
(6) in accordance with the deformation sequence, the electricity is sequentially supplied to the deformation positions 1, 2, 3, and 4 to generate joule heat, and the print material is sequentially deformed in the sequence of the deformation positions 1, 2, 3, and 4, as shown in fig. 2(b), (c), (d), and (e).
EXAMPLE 2
The embodiment also provides a 4D printing method for a programmable continuous fiber composite intelligent structure, which includes the following steps:
(1) establishing 2 three-dimensional models of continuous fiber composite material structures with the same size by utilizing SolidWorks according to the structural size of the deformation body;
(2) dividing the intelligent structure of the continuous fiber composite material into a bottom sub-area and a top sub-area according to the deformation characteristics of the deformation part, wherein the two sub-areas are both selected from the continuous fiber composite material;
(3) respectively designing a layer of conductive circuits with different shapes for the two deformation bodies;
(4) selecting different printing nozzles according to different materials of each region, designing corresponding process parameters, planning a printing path according to the trends of continuous fibers and conducting circuits, and generating a data file matched with a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer;
(5) and (4) importing the data file obtained in the step (4) into a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer, and finishing printing of two deformable bodies according to the division and material selection of each region, as shown in figure 3.
The continuous fiber is carbon fiber, the matrix material is PLA, the conductive slurry is Konnatong TL-201S, the printing nozzle is a Wucang nozzle with the inner diameter of 200 mu m, and the micro-nano printing technology adopts an electric field driven jet deposition micro-nano 3D printing technology;
(6) the conductive traces of the two deformation bodies are energized to generate joule heat, and the bending angles and speeds of the two deformation bodies are different due to the difference in the designed heating circuits, as shown in fig. 4(a) (b).
Example 3
The invention provides a 4D printing method of a programmable continuous fiber composite material intelligent structure, which can realize multi-part complex structure deformation. The method comprises the following steps:
(1) according to the structural size of the deformation body, utilizing SolidWorks to establish a three-dimensional model of the continuous fiber composite material structure;
(2) according to the deformation characteristics of the deformation part, the intelligent structure of the continuous fiber composite material is divided into 8 sub-areas, wherein the sub-areas 1, 4, 5 and 8 are made of pure matrix materials, and the sub-areas 2, 3, 6 and 7 are made of the continuous fiber composite material, as shown in the attached figure 6;
(3) designing a layer of conductive circuit for each deformed part;
(4) selecting different printing nozzles according to different materials of each area, designing corresponding process parameters, planning a printing path according to the trend of the fiber and the conducting circuit, and generating a data file matched with a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer;
(5) and (4) importing the data file in the step (4) into a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer, and finishing the printing of the deformation structure according to the division and material selection of each region, as shown in fig. 5 (a).
The continuous fiber is carbon fiber, the matrix material is PLA, the conductive slurry is Konnatong TL-201S, the printing nozzle is a Wucang nozzle with the inner diameter of 200 mu m, and the micro-nano printing technology adopts an electric field driven jet deposition micro-nano 3D printing technology;
(6) in accordance with the deformation sequence, the electricity is sequentially applied to the deformation portions 1, 2, 3, and 4 to generate joule heat, and the deformation portions 1, 2, 3, and 4 are sequentially deformed to form a step shape, as shown in fig. 5 (b).
It will be understood by those skilled in the art that the foregoing is only an exemplary embodiment of the present invention, and is not intended to limit the invention to the particular forms disclosed, since various modifications, substitutions and improvements within the spirit and scope of the invention are possible and within the scope of the appended claims.
Claims (10)
1. A4D printing method of a programmable continuous fiber composite material intelligent structure is characterized by comprising the following steps:
(1) establishing a three-dimensional model of the continuous fiber composite material structure by using computer aided design software according to the size of the deformable body structure;
(2) according to the deformation characteristics of the deformation part, dividing the continuous fiber composite material intelligent structure into sub-regions, and selecting a continuous fiber composite material or a pure matrix material for the sub-regions;
(3) designing the shape of the conductive circuit according to the shape characteristics, the deformation rate and the deformation angle of the deformed part;
(4) selecting different printing nozzles according to different materials of each region, designing corresponding process parameters, planning a printing path according to the direction of the fiber and the conducting circuit, and generating a data file matched with a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer;
(5) importing the data file obtained in the step (4) into a continuous fiber composite material and a micro-nano manufacturing multifunctional 3D printer, and finishing 3D printing integrated forming according to division of each region and material selection;
(6) according to the deformation sequence of the deformation parts, the deformation parts are sequentially electrified to generate joule heat, because the heating sequence of each part is different, each part completes bending deformation according to the preset sequence, and the arrangement mode and the layer number of the conducting circuits are different, so that different deformation rates and deformation angles of the deformation parts are realized.
2. The 4D printing method of a programmable continuous fiber composite intelligent structure according to claim 1, wherein the computer aided design software in the step (1) is Autodesk Inventor, SolidWorks, CATIA, Zhongwang 3D, Pro/E, AutoCAD, UG NX, SolidEdge or Onespace.
3. The 4D printing method for the intelligent programmable continuous fiber composite structure according to claim 1, wherein the continuous fibers in the step (2) are carbon fibers, aramid fibers, polyethylene fibers, glass fibers, poly-p-phenylene benzobisoxazole fibers, basalt fibers, polyimide fibers, metal fibers, SiC fibers, conductive polymer fibers, graphite fibers, boron fibers, silicon nitride fibers, ramie fibers, jute fibers, flax fibers or bamboo fibers.
4. The method for 4D printing of a programmable continuous fiber composite smart fabric as claimed in claim 1, wherein the matrix material in step (2) is PLA, PEEK, PI, PEI, ABS, polyvinyl chloride, polyethylene, polypropylene, acetal, acrylic resin, ethylene ethyl acrylate, nylon, phenolic resin, polystyrene, polyurethane, polyvinylidene fluoride, styrene butadiene rubber, nitrile butadiene rubber, silicone rubber, fluororubber, butadiene rubber, isoprene rubber, ethylene propylene rubber, neoprene rubber, acrylate system shape memory polymer, thiol-olefin system shape memory polymer, epoxy system shape memory polymer or low melting point alloy.
5. The 4D printing method for the intelligent structure of the programmable continuous fiber composite material as claimed in claim 1, wherein the 3D printing device in the step (5) is a multi-degree-of-freedom continuous fiber composite material and wiener manufacturing multifunctional 3D printer.
6. The method of claim 1, wherein the 3D printing process for printing the continuous fiber composite material in the step (5) comprises an in-situ melt-impregnation extrusion forming method and a fiber prepreg filament extrusion forming method.
7. The method for 4D printing of a programmable continuous fiber composite intelligent structure according to claim 1, wherein the conductive line material in step (3) is conductive silver paste, conductive copper paste, conductive gold paste, metal nanowire paste.
8. A method for 4D printing a programmable continuous fiber composite intelligent structure according to claim 1, wherein the thickness of the conductive line in step (3) is 50-300 μm.
9. The 4D printing method for the intelligent programmable continuous fiber composite structure according to claim 1, wherein the 3D printing technology in the step (5) comprises an electric field driven jet deposition micro-nano 3D printing technology, aerosol jet printing, physical vapor deposition 3D printing and chemical vapor deposition 3D printing.
10. The 4D printing method of the programmable continuous fiber composite intelligent structure according to claim 1, wherein the number of layers and the arrangement of the conductive circuits are designed in proportion to the deformation speed and the size of the angle, namely, the number of layers which are deformed first is large, the arrangement is dense, the number of layers which are deformed later is small, and the arrangement is sparse.
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| CN115351291A (en) * | 2022-09-02 | 2022-11-18 | 西安交通大学 | Electronic component preparation method based on metal wire continuous fiber 3D printing process |
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| CN111070689A (en) * | 2019-12-13 | 2020-04-28 | 华中科技大学 | Method for controlling deformation of sample based on 3D printing technology |
| CN111251600A (en) * | 2020-03-09 | 2020-06-09 | 西安交通大学 | Shape memory alloy driven soft rehabilitation glove and 3D printing preparation method thereof |
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| CN111070689A (en) * | 2019-12-13 | 2020-04-28 | 华中科技大学 | Method for controlling deformation of sample based on 3D printing technology |
| CN112248446A (en) * | 2019-12-13 | 2021-01-22 | 华中科技大学 | Method for controlling deformation of sample based on 3D printing technology |
| CN111251600A (en) * | 2020-03-09 | 2020-06-09 | 西安交通大学 | Shape memory alloy driven soft rehabilitation glove and 3D printing preparation method thereof |
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