CN110920063A - A method of 3D printing continuous fiber self-reinforced composite materials - Google Patents
A method of 3D printing continuous fiber self-reinforced composite materials Download PDFInfo
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- CN110920063A CN110920063A CN201911409898.7A CN201911409898A CN110920063A CN 110920063 A CN110920063 A CN 110920063A CN 201911409898 A CN201911409898 A CN 201911409898A CN 110920063 A CN110920063 A CN 110920063A
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- 239000011208 reinforced composite material Substances 0.000 title claims abstract description 53
- 239000000835 fiber Substances 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000010146 3D printing Methods 0.000 title claims abstract description 26
- 238000007639 printing Methods 0.000 claims abstract description 25
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 24
- 239000011159 matrix material Substances 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 18
- 230000008018 melting Effects 0.000 claims abstract description 18
- 239000002131 composite material Substances 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 229920001169 thermoplastic Polymers 0.000 claims abstract description 7
- 239000002861 polymer material Substances 0.000 claims abstract description 6
- 239000011347 resin Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 239000000126 substance Substances 0.000 claims abstract description 5
- -1 Polyethylene Polymers 0.000 claims description 10
- 238000004064 recycling Methods 0.000 claims description 8
- 239000004698 Polyethylene Substances 0.000 claims description 6
- 229920000573 polyethylene Polymers 0.000 claims description 6
- 239000004743 Polypropylene Substances 0.000 claims description 4
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims description 4
- 229920001707 polybutylene terephthalate Polymers 0.000 claims description 4
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 4
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 4
- 239000004926 polymethyl methacrylate Substances 0.000 claims description 4
- 229920001155 polypropylene Polymers 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 2
- 229920001778 nylon Polymers 0.000 claims description 2
- 239000011112 polyethylene naphthalate Substances 0.000 claims description 2
- 239000004626 polylactic acid Substances 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 description 6
- 239000004699 Ultra-high molecular weight polyethylene Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 229920000785 ultra high molecular weight polyethylene Polymers 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000003733 fiber-reinforced composite Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000007731 hot pressing Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 239000004416 thermosoftening plastic Substances 0.000 description 3
- 238000005470 impregnation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011199 continuous fiber reinforced thermoplastic Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000012815 thermoplastic material Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- 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
-
- 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
- B29C64/357—Recycling
-
- 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
-
- 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
- B33Y40/00—Auxiliary operations or equipment, e.g. for material handling
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Optics & Photonics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
Abstract
一种3D打印连续纤维自增强复合材料方法，先建立自增强复合材料制件三维模型，导出三维模型为stl格式文件；然后确定打印温度区间，自增强复合材料为物理形态不同的热塑性高分子材料，具有同一化学结构的熔点差异的增强相和基体相，增强相为连续长纤维，基体相为树脂；打印温度范围高于基体相熔点低于增强相熔点；再3D打印制备自增强复合材料，最后进行自增强复合材料回收，将自增强复合材料物理粉碎加热到增强相熔点温度以上至完全融化，回收成为原材料；本发明一方面解决3D打印复合材料界面性能差、回收利用困难等问题，另一方面实现连续纤维自增强复合材料的低成本快速制造。
A method of 3D printing continuous fiber self-reinforced composite materials. First, a three-dimensional model of a self-reinforced composite material is established, and the three-dimensional model is exported as a stl format file; then the printing temperature range is determined, and the self-reinforced composite material is a thermoplastic polymer material with different physical forms. , the reinforcing phase and the matrix phase with the same chemical structure and different melting points, the reinforcing phase is continuous long fibers, and the matrix phase is resin; the printing temperature range is higher than the melting point of the matrix phase and lower than the melting point of the reinforcing phase; and then 3D printing to prepare self-reinforced composite materials, Finally, the self-reinforced composite material is recycled, and the self-reinforced composite material is physically pulverized and heated to a temperature above the melting point of the reinforcing phase to be completely melted, and recycled into raw materials. On the one hand, it realizes the low-cost and rapid manufacture of continuous fiber self-reinforced composites.
Description
Technical Field
The invention relates to the technical field of 3D printing of continuous fiber reinforced composites, in particular to a method for 3D printing of continuous fiber self-reinforced composites.
Background
The 3D printing technology of the continuous fiber reinforced composite material is a novel composite material processing technology, a matrix material and the continuous fiber are compounded and superposed to form a composite material part by adopting the principle of 3D printing layer by layer, the process does not need to prepare a mold and a prepreg tape in advance, the cost and the process complexity are reduced, the direction of the reinforced fiber can be accurately controlled, the composite material part with customized performance is obtained, and the rapid manufacturing of the composite material part with a complex structure can be realized. However, the process molding technology still has some inherent defects, such as insufficient pressure of a fiber and matrix impregnation cavity in the printing process, rapidness in the printing process, short impregnation time of the fiber and resin and the like, which causes poor interface bonding performance of the composite material and difficulty in greatly improving the performance of a product, and meanwhile, the fiber reinforced composite material is often difficult to recycle in a non-degraded manner, and even when a thermoplastic matrix material is adopted, the matrix and the reinforced fiber are difficult to recycle respectively, so that the problems of high cost, low material recycling rate and the like of the 3D printing composite material are caused, and the practical application of the 3D printing composite material is restricted.
The reinforcing phase and the matrix phase of the self-reinforced composite material are the same or the same polymer, so that the reinforcing phase and the matrix phase can be compatible with each other, a good interface form is formed, the transmission of stress is effectively promoted, the reinforcing effect of the fiber is fully exerted, and the composite material is endowed with excellent mechanical properties. In addition, the self-reinforced composite material is a thermoplastic material, can be recycled into raw materials only by heating and melting, and has high recycling rate. The self-reinforced composite material has been successfully applied to the fields of automobiles, sports and leisure and the like based on the advantages of excellent interface performance, light weight, easy recovery and the like. The traditional forming method of the continuous fiber self-reinforced composite material comprises a fiber hot-pressing method, a film embedded hot-pressing method, a solution dipping hot-pressing method and the like, has the defects of small size, simple shape, long forming period, high cost, low production efficiency and the like of products, and in order to overcome the process limitation, the forming method of the continuous fiber self-reinforced composite material with high efficiency and low cost becomes the research focus in the field.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for 3D printing of a continuous fiber self-reinforced composite material, which solves the problems of poor interface performance, difficult recycling and the like of the 3D printed composite material on one hand, and realizes low-cost and rapid manufacturing of the continuous fiber self-reinforced composite material on the other hand.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of 3D printing a continuous fiber self-reinforced composite, comprising the steps of:
1) establishing a three-dimensional model of a self-reinforced composite material part: according to the requirements of the self-reinforced composite material part, establishing a three-dimensional model 1 by using computer aided design software CAD, and exporting the three-dimensional model as a stl format file;
2) determining a printing temperature interval: the self-reinforced composite material is a thermoplastic high polymer material with different physical forms, and comprises a reinforcing phase 2 and a matrix phase 4 which have the same chemical structure and have different melting points, wherein the reinforcing phase 2 is continuous long fiber, and the matrix phase 4 is resin; the printing temperature range is higher than the melting point of the matrix phase 4 and lower than the melting point of the reinforcing phase 2, the surface of the reinforcing phase 2 is melted in the printing process, the melted part is solidified into an interface phase 3, the interface bonding performance is improved, and the rest part, namely the core fiber of the reinforcing phase 2 keeps high orientation;
3)3D printing preparation of the self-reinforced composite material: importing the stl format file in the step 1) into computer aided manufacturing software (CAM), determining printing temperature according to the step 2), determining 3D printing process parameters, and generating a printing command file of the self-reinforced composite material part by combining slice software Skeinpurg of the computer aided manufacturing software (CAM); setting and adjusting a 3D printer, and finally printing to obtain a self-reinforced composite material part;
4) recovering the self-reinforced composite material: during recovery, the self-reinforced composite material is physically crushed and heated to a temperature higher than the melting point of the reinforcing phase 2 until the self-reinforced composite material is completely melted, namely 100% of the self-reinforced composite material is recovered to be used as a raw material for recycling.
The thermoplastic polymer material in the step 2) comprises a Polyethylene (PE) base, a polypropylene (PP) base, a polylactic acid (PLA) base, a nylon (PA) base, a polymethyl methacrylate (PMMA) base, a polyethylene terephthalate (PET) base, a polybutylene terephthalate (PBT) base and a polyethylene naphthalate (PEN) base.
Compared with the prior art, the invention has the following beneficial effects:
(1) compared with the traditional technology for manufacturing the self-reinforced composite material, the method can be used for quickly and efficiently manufacturing the self-reinforced composite material part with a specific and complex shape without a die, and the mechanical properties can be controlled by changing the scanning distance, the layering thickness and the like by utilizing the 3D printing advantages.
(2) Compared with 3D printing continuous fiber reinforced thermoplastic composite materials, the 3D printing self-reinforced composite material reinforcing phase 2 and the matrix phase 4 are the same or the same polymer, so that the two materials can be compatible with each other to form a good interface, stress transfer is effectively promoted, and the reinforcing effect of fibers is fully exerted; on the other hand, the reinforced phase 2 and the matrix phase 4 of the self-reinforced composite material can be recycled into raw materials only by heating and melting, and the recycling rate is high.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional model of a self-reinforced composite product and a self-reinforcing principle according to an embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Embodiment 1, a method of 3D printing a continuous fiber self-reinforced composite comprising the steps of:
1) establishing a three-dimensional model of a self-reinforced composite material part: referring to fig. 1, according to the requirements of the self-reinforced composite material part, a 180 × 10 × 2 three-dimensional model 1 is established by using SolidWorks of computer aided design software CAD, and the three-dimensional model is exported to be a stl format file;
2) determining a printing temperature interval: the self-reinforced composite material is a thermoplastic high polymer material with different physical forms, a reinforced phase 2 and a matrix phase 4 with the same chemical structure and melting point difference are adopted, ultra-high molecular weight polyethylene fiber UHMWPE is selected as the reinforced phase 2, high density polyethylene HDPE is selected as the matrix phase 4, the melting point of the high density polyethylene HDPE is 135 ℃, the melting point of the ultra-high molecular weight polyethylene fiber UHMWPE is 147 ℃, the printing temperature interval is 136-146 ℃, the surface of the reinforced phase 2 is melted in the printing process, the melted part is solidified into an interface phase 3, the interface bonding performance is improved, and the rest part, namely the core fiber of the reinforced phase 2 is kept highly oriented;
3)3D printing preparation of the self-reinforced composite material: importing the stl format file in the step 1) into a Replicator G of computer aided manufacturing software CAM, determining that the printing temperature is 145 ℃ according to the step 2), simultaneously determining 3D printing process parameters of fiber filling scanning distance of 1.0mm, layering thickness of 0.3mm and printing speed of 100mm/min for the 3D printing, and generating a printing command file of the self-reinforced composite material part by combining slice software Skein form of the computer aided manufacturing software CAM; setting and adjusting a 3D printer, and finally printing to obtain a self-reinforced composite material part;
4) recovering the self-reinforced composite material: during recycling, the self-reinforced composite material is physically crushed and then placed into a screw extruder to be heated to over 160 ℃, the polyethylene blend is extruded, 100% of the polyethylene blend is recycled to be used as a raw material, and the raw material is recycled.
The invention takes continuous long fibers with the same chemical structure and different physical forms as a reinforcing phase 2 and resin as a matrix phase 4, and prepares the self-reinforced composite material in a 3D printing mode. The invention utilizes the advantages of the 3D printing manufacturing process, and can quickly manufacture parts with specific complex shapes without molds. The preparation period of the traditional self-reinforced composite material is shortened, and the cost is reduced. The reinforcing phase 2 and the matrix phase 4 of the manufactured self-reinforced composite material are the same group of polymers, and the reinforcing phase 2 and the matrix phase 4 can be mutually fused in the printing process to form a good interface, so that the self-reinforced composite material has excellent mechanical properties compared with pure materials; the self-reinforced composite material can be recycled into raw materials only by heating and melting, the recycling rate is high, the utilization rate of the material is increased, and the cost and pollution of the recycled composite material are reduced.
Claims (2)
1. A3D printing method of a continuous fiber self-reinforced composite material is characterized by comprising the following steps:
1) establishing a three-dimensional model of a self-reinforced composite material part: according to the requirements of the self-reinforced composite material part, establishing a three-dimensional model (1) by using computer aided design software CAD, and exporting the three-dimensional model to be a stl format file;
2) determining a printing temperature interval: the self-reinforced composite material is a thermoplastic polymer material with different physical forms, and comprises a reinforcing phase (2) and a matrix phase (4) which have the same chemical structure and have different melting points, wherein the reinforcing phase (2) is continuous long fiber, and the matrix phase (4) is resin; the printing temperature range is higher than the melting point of the matrix phase (4) and lower than the melting point of the reinforcing phase (2), the surface of the reinforcing phase (2) is melted in the printing process, the melted part is solidified into an interface phase (3) subsequently, the interface bonding performance is improved, and the rest part, namely the core fiber of the reinforcing phase (2), keeps high orientation;
3)3D printing preparation of the self-reinforced composite material: importing the stl format file in the step 1) into computer aided manufacturing software (CAM), determining printing temperature according to the step 2), determining 3D printing process parameters, and generating a printing command file of the self-reinforced composite material part by combining slice software Skeinpurg of the computer aided manufacturing software (CAM); setting and adjusting a 3D printer, and finally printing to obtain a self-reinforced composite material part;
4) recovering the self-reinforced composite material: during recovery, the self-reinforced composite material is physically crushed and heated to a temperature higher than the melting point of the reinforcing phase (2) until the self-reinforced composite material is completely melted, namely 100 percent of the self-reinforced composite material is recovered to be used as a raw material for recycling.
2. The method of 3D printing a continuous fiber self-reinforced composite according to claim 1, wherein: the thermoplastic polymer material in the step 2) comprises a Polyethylene (PE) base, a polypropylene (PP) base, a polylactic acid (PLA) base, a nylon (PA) base, a polymethyl methacrylate (PMMA) base, a polyethylene terephthalate (PET) base, a polybutylene terephthalate (PBT) base and a polyethylene naphthalate (PEN) base.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911409898.7A CN110920063A (en) | 2019-12-31 | 2019-12-31 | A method of 3D printing continuous fiber self-reinforced composite materials |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113021886A (en) * | 2021-03-09 | 2021-06-25 | 西安交通大学 | 3D printing spray head structure for realizing continuous fiber self-reinforced composite material supercooling forming |
| CN114407353A (en) * | 2021-10-21 | 2022-04-29 | 南京玻璃纤维研究设计院有限公司 | Composite material and preparation method thereof |
| CN115447141A (en) * | 2022-09-08 | 2022-12-09 | 四川大学 | Recycling method for continuous fiber reinforced thermoplastic 3D printing composites |
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| CN114407353A (en) * | 2021-10-21 | 2022-04-29 | 南京玻璃纤维研究设计院有限公司 | Composite material and preparation method thereof |
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Application publication date: 20200327 |