CN113246464A - Preparation method of long-bundle carbon fiber 3D printing bionic structure - Google Patents
Preparation method of long-bundle carbon fiber 3D printing bionic structure Download PDFInfo
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- CN113246464A CN113246464A CN202110526642.5A CN202110526642A CN113246464A CN 113246464 A CN113246464 A CN 113246464A CN 202110526642 A CN202110526642 A CN 202110526642A CN 113246464 A CN113246464 A CN 113246464A
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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
- B29C64/165—Processes of additive manufacturing using a combination of solid and fluid materials, e.g. a powder selectively bound by a liquid binder, catalyst, inhibitor or energy absorber
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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
- B33Y70/00—Materials specially adapted for additive manufacturing
- B33Y70/10—Composites of different types of material, e.g. mixtures of ceramics and polymers or mixtures of metals and biomaterials
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
Abstract
The invention discloses a preparation method of a long-bundle carbon fiber 3D printing bionic structure, which comprises the steps of preparing a PLA (polylactic acid) wrapped long-bundle carbon fiber 3D printing sample piece by taking long-bundle carbon fibers and a thermoplastic resin PLA (polylactic acid) as materials and performing 3D printing, wherein the thermoplastic resin PLA is extruded to be molten so as to wrap the long-bundle carbon fibers and extrude the long-bundle carbon fibers to a printing platform along a nozzle of a heating sprayer; the long-bundle carbon fiber and the thermoplastic resin PLA are extruded simultaneously; the printing procedure is changed to realize the distribution and arrangement of carbon fiber printing samples and form firm combination with the thermoplastic resin PLA; the preparation of the long-bundle carbon fiber sample with the bionic structure is realized by compiling a 3D printing program, the bionic feather structure sample arranged at a variable angle is prepared, and the impact strength is higher compared with that of a 3D printing sample with a common arrangement structure; the bionic feather structure 3D printing sample prepared by the method has the advantages of wide application range, high mechanical strength and high preparation speed, and provides an effective new thought for designing and preparing high-strength 3D printing pieces.
Description
Technical Field
The invention relates to the technical field of engineering materials, in particular to a preparation method of a long-bundle carbon fiber 3D printing bionic structure.
Background
Since fiber-reinforced resin-based composite materials have excellent tensile strength, impact toughness, fatigue resistance and high specific stiffness, these composite materials are widely used as heat-resistant materials, lightweight materials, wear-resistant materials and bio-based materials; compared with glass fiber, basalt fiber and natural fiber, the carbon fiber has the advantages of high specific strength, large specific modulus, small density, strong fatigue resistance and high temperature resistance; based on the advantages of carbon fiber, it is used as a reinforcing material and compounded with epoxy, ceramics and metals; the extensive use of the carbon fiber composite material can cause a great deal of pollution, and polylactic acid (PLA) is a biodegradable material and can be widely used in additive manufacturing to reduce the influence on the environment; the carbon fiber reinforced PLA resin has the characteristics of light weight and high strength, and is widely used for aerospace, transportation and artificial limbs of human bodies.
To date, most carbon fiber reinforced PLA resins have used chopped carbon fibers; since the chopped carbon fiber-reinforced PLA resin is made by mixing and heating chopped carbon fibers with PLA particles, there are few carbon fibers in the composite material with precisely distributed directions, which impairs the reinforcing effect of the carbon fibers; based on the working principle of Fused Deposition Modeling (FDM)3D printing, in order to avoid blockage in the printing process, the length and the number of chopped carbon fibers are limited; the effect of carbon fiber reinforced PLA resin is improved because the continuous carbon fiber bundles are aligned in orientation throughout the sample, the PLA strands are separately extruded into a heating nozzle, and the continuous carbon fiber bundles are drawn into the heating nozzle, wherein the carbon fiber bundles are wrapped with the PLA strands in a molten state, and after the carbon fiber bundles are sufficiently mixed with the PLA strands in a molten state, the mixture is extruded from the nozzle.
In nature, the feathers can bear larger aerodynamic force during the flying process of birds, which indicates that the feathers are light in weight and high in strength; compared with continuous carbon fibers arranged along a single direction, the Poisson ratio is increased along with the increase of the angle, after the maximum value is reached, the Poisson ratio is reduced along with the increase of the angle, the fiber reinforced composite material with special angle arrangement has better fatigue strength than the fiber reinforced composite material with vertical arrangement, under the condition of applying force in multiple directions, the performance of the continuous carbon fibers with different arrangement angles is better, and the feather-like structure can provide a new method for 3D printing of the continuous carbon fiber reinforced PLA composite material so as to improve the mechanical strength.
Disclosure of Invention
The invention provides a preparation method of a long-bundle carbon fiber 3D printing bionic structure, which is characterized in that a long-bundle carbon fiber and thermoplastic resin PLA are used as materials, and 3D printing sample pieces of the long-bundle carbon fiber wrapped by the PLA are prepared through 3D printing, so that the tensile strength and the impact strength of the 3D printing sample pieces are further improved.
The invention provides a preparation method of a long-bundle carbon fiber 3D printing bionic structure, which comprises the following preparation steps:
preparation of long-bundle carbon fiber bionic feather structure 3D printing sample
The method comprises the following steps: the raw material composition of the long-bundle carbon fiber bionic feather structure 3D printing sample is as follows:
1K continuous carbon fiber bundle is used as a reinforcing phase;
thermoplastic resin PLA is used as a matrix material;
step two: preparation process
Preparing materials: according to the starting material provided in step one
a) Under the condition of room temperature, firstly adding the reinforcing phase and the matrix material into a 3D printer extruder, feeding the mixture into a heating nozzle through the extruder, and wrapping long-bundle carbon fibers by thermoplastic resin PLAPLA in the heating nozzle;
b) through the extrusion effect of traction force and extruder, the combined material of parcel long bundle carbon fiber arranges on print platform according to the printing route that sets up in advance, uses cooling fan solidification.
Further, the thermoplastic resin PLA is extruded to be in a molten state so as to wrap the long-bundle carbon fiber and extrude the long-bundle carbon fiber to the printing platform along a nozzle of the heating spray head;
the long-bundle carbon fibers and thermoplastic resin PLA are extruded simultaneously; wherein
The printing procedure is changed to realize the distribution and arrangement of the carbon fiber printing samples and form firm combination with the thermoplastic resin PLA.
In the technical scheme, the preparation method of the long-bundle carbon fiber 3D printing bionic structure provided by the invention has the following beneficial effects:
according to the invention, the long-bundle carbon fiber and thermoplastic resin PLA composite material printing sample with the bionic feather structure is prepared through 3D printing, the continuous carbon fiber bundle sample with the bionic feather structure is successfully prepared by changing the printing parameters, and the tensile strength and the impact strength of the 3D printing sample are improved on the basis of the existence of a 3D printing sample fiber-matrix bonding interface consisting of PLA and continuous carbon fiber bundles. Under the same printing parameters, compared with a vertical structure sample and a bionic structure sample, the tensile strength of the bionic feather structure is slightly reduced, but the impact strength is greatly improved, and the application of 3D printing is expanded by combining the continuous carbon fiber bundles and the bionic feather structure.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic diagram of a printing process of a printing nozzle in a preparation method of a long-bundle carbon fiber 3D printing bionic structure provided by the invention;
FIG. 2 is a schematic diagram of a printing path A of a vertical arrangement structure and a bionic feather arrangement structure in the preparation method of a long-bundle carbon fiber 3D printing bionic structure provided by the invention;
fig. 3 is a schematic diagram of a printing path B of a vertical arrangement structure and a bionic feather arrangement structure in the preparation method of the long-bundle carbon fiber 3D printing bionic structure provided by the invention;
FIG. 4 is a diagram of the printed object of FIG. 2;
FIG. 5 is a diagram of the printed object of FIG. 3;
fig. 6 is a schematic diagram of a printing path C of a vertical arrangement structure and a bionic feather arrangement structure in the preparation method of the long-bundle carbon fiber 3D printing bionic structure provided by the invention;
FIG. 7 is a diagram of the printed object of FIG. 6;
fig. 8 is a drawing for comparing tensile properties of a vertical arrangement structure and a bionic feather arrangement structure in the preparation method of the long-bundle carbon fiber 3D printing bionic structure provided by the invention (a model i, a model ii and a model iii in the drawing correspond to fig. 2, fig. 3 and fig. 6 respectively);
fig. 9 is a graph showing the comparison of the impact performance between the vertical arrangement structure and the bionic feather arrangement structure in the preparation method of the long-bundle carbon fiber 3D printing bionic structure provided by the invention (in the graph, a model i, a model ii, and a model iii correspond to fig. 2, fig. 3, and fig. 6, respectively).
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
See fig. 1-9;
the invention discloses a preparation method of a long-bundle carbon fiber 3D printing bionic structure, which comprises the following preparation steps:
preparation of long-bundle carbon fiber bionic feather structure 3D printing sample
The method comprises the following steps: the raw material composition of the long-bundle carbon fiber bionic feather structure 3D printing sample is as follows:
1K continuous carbon fiber bundle is used as a reinforcing phase;
thermoplastic resin PLA is used as a matrix material;
step two: preparation process
Preparing materials: according to the starting material provided in step one
a) Under the condition of room temperature, firstly adding the reinforcing phase and the matrix material into a 3D printer extruder, feeding the mixture into a heating sprayer through the extruder, and wrapping long-bundle carbon fibers with thermoplastic resin PLA in the heating sprayer;
b) through the extrusion effect of traction force and extruder, the combined material of parcel long bundle carbon fiber arranges on print platform according to the printing route that sets up in advance, uses cooling fan solidification.
Further, the thermoplastic resin PLA is extruded to be in a molten state so as to wrap the long-bundle carbon fiber and extrude the long-bundle carbon fiber to the printing platform along a nozzle of the heating spray head;
the long-bundle carbon fiber and the thermoplastic resin PLA are extruded simultaneously; wherein
The printing procedure is changed to realize the distribution and arrangement of the carbon fiber printing samples and form firm combination with the thermoplastic resin PLA.
The technical scheme of the invention is that a 3D printing sample piece of PLA wrapped long-bundle carbon fibers is prepared by 3D printing on the basis of long-bundle carbon fibers and thermoplastic resin PLA as materials, and a bionic feather structure sample arranged at a variable angle is prepared by compiling a 3D printing program to prepare a long-bundle carbon fiber sample with a bionic structure;
according to the invention, through 3D printing, PLA is molten and wraps the long-bundle carbon fiber at the extrusion nozzle and then is extruded from the nozzle onto a printing platform, through a 3D printing method, the long-bundle carbon fiber and thermoplastic resin are extruded simultaneously, and through changing a printing program, the carbon fiber is designable in distribution in a printing sample and is firmly combined with a matrix;
the preparation method of the bionic feather structure 3D printing sample successfully realizes the conversion from bionic design to bionic preparation, can truly approach to the arrangement mode of the feathers of the owls carved in nature, realizes a real bionic structure, and has wide application range, high mechanical strength and high preparation speed.
Example 1:
preparation of vertically-arranged long-bundle carbon fiber sample by 3D printing mode
Under the condition of room temperature, firstly adding the reinforcing phase and the matrix material into a 3D printer extruder, feeding the mixture into a heating spray head through the extruder, wrapping long-bundle carbon fibers with PLA in the heating spray head, distributing the composite material wrapping the long-bundle carbon fibers on a printing platform according to a preset printing path through the extrusion action of traction force and the extruder, and curing by using a cooling fan; so far, successfully preparing a bionic feather structure long-bundle carbon fiber sample;
adding long carbon fiber bundles and PLA into an extruder according to the printing process of the 3D printing nozzle shown in figure 1, and performing 3D printing according to the printing path shown in figures 2 and 3; so far, the preparation of the bionic bird feather arrangement long-bundle carbon fiber sample is prepared in a 3D printing mode.
Example 2:
preparation of bionic bird feather arrangement long-bundle carbon fiber sample in 3D printing mode
Under the condition of room temperature, firstly adding the reinforcing phase and the matrix material into a 3D printer extruder, feeding the mixture into a heating spray head through the extruder, wrapping long-bundle carbon fibers with PLA in the heating spray head, distributing the composite material wrapping the long-bundle carbon fibers on a printing platform according to a preset printing path through the extrusion action of traction force and the extruder, and curing by using a cooling fan; so far, the bionic feather structure long-bundle carbon fiber sample is successfully prepared.
Adding long carbon fiber bundles and PLA into an extruder according to the printing process of the 3D printing nozzle shown in FIG. 1, and performing 3D printing according to the printing path shown in FIG. 6; so far, the preparation of the bionic bird feather arrangement long-bundle carbon fiber sample is prepared in a 3D printing mode.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (2)
1. A preparation method of a long-bundle carbon fiber 3D printing bionic structure is characterized by comprising the following preparation steps:
preparation of long-bundle carbon fiber bionic feather structure 3D printing sample
The method comprises the following steps: the raw material composition of the long-bundle carbon fiber bionic feather structure 3D printing sample is as follows:
1K continuous carbon fiber bundle is used as a reinforcing phase;
thermoplastic resin PLA is used as a matrix material;
step two: preparation process
Preparing materials: according to the starting material provided in step one
a) Under the condition of room temperature, firstly adding the reinforcing phase and the matrix material into a 3D printer extruder, feeding the mixture into a heating nozzle through the extruder, and wrapping long-bundle carbon fibers by thermoplastic resin PLAPLA in the heating nozzle;
b) through the extrusion effect of traction force and extruder, the combined material of parcel long bundle carbon fiber arranges on print platform according to the printing route that sets up in advance, uses cooling fan solidification.
2. The preparation method of the long-bundle carbon fiber 3D printing bionic structure according to claim 1, characterized in that:
the thermoplastic resin PLA is extruded to be in a molten state so as to wrap the long-bundle carbon fiber and extrude the long-bundle carbon fiber to the printing platform along a nozzle of the heating sprayer;
the long-bundle carbon fibers and thermoplastic resin PLA are extruded simultaneously; wherein
The printing procedure is changed to realize the distribution and arrangement of the carbon fiber printing samples and form firm combination with the thermoplastic resin PLA.
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| CN202110526642.5A CN113246464A (en) | 2021-05-14 | 2021-05-14 | Preparation method of long-bundle carbon fiber 3D printing bionic structure |
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| CN202110526642.5A CN113246464A (en) | 2021-05-14 | 2021-05-14 | Preparation method of long-bundle carbon fiber 3D printing bionic structure |
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Citations (6)
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| CN107139459A (en) * | 2017-07-19 | 2017-09-08 | 华明进 | Continuous fiber reinforced composite materials increasing material manufacturing device |
| EP3444102A1 (en) * | 2013-06-05 | 2019-02-20 | Markforged, Inc. | Method and apparatus for fiber reinforced additive manufacturing |
| CN109878070A (en) * | 2019-03-14 | 2019-06-14 | 吉林大学 | A kind of preparation method of the thermotropic shape memory lactic acid composite material of 3D printing |
| CN110355995A (en) * | 2019-08-19 | 2019-10-22 | 航天特种材料及工艺技术研究所 | It is a kind of that 3D printing forming method and the thus object construction that forms and application are carried out using continuous fiber |
| CN111674035A (en) * | 2020-06-30 | 2020-09-18 | 吉林大学 | 3D printing method and device for bionic multi-stage spiral structure reinforced composite material |
| CN112757626A (en) * | 2020-12-13 | 2021-05-07 | 华融普瑞(北京)科技有限公司 | Continuous carbon fiber FDM 3D printing forming method |
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2021
- 2021-05-14 CN CN202110526642.5A patent/CN113246464A/en active Pending
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| EP3444102A1 (en) * | 2013-06-05 | 2019-02-20 | Markforged, Inc. | Method and apparatus for fiber reinforced additive manufacturing |
| CN107139459A (en) * | 2017-07-19 | 2017-09-08 | 华明进 | Continuous fiber reinforced composite materials increasing material manufacturing device |
| CN109878070A (en) * | 2019-03-14 | 2019-06-14 | 吉林大学 | A kind of preparation method of the thermotropic shape memory lactic acid composite material of 3D printing |
| CN110355995A (en) * | 2019-08-19 | 2019-10-22 | 航天特种材料及工艺技术研究所 | It is a kind of that 3D printing forming method and the thus object construction that forms and application are carried out using continuous fiber |
| CN111674035A (en) * | 2020-06-30 | 2020-09-18 | 吉林大学 | 3D printing method and device for bionic multi-stage spiral structure reinforced composite material |
| CN112757626A (en) * | 2020-12-13 | 2021-05-07 | 华融普瑞(北京)科技有限公司 | Continuous carbon fiber FDM 3D printing forming method |
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Application publication date: 20210813 |