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A 3D printing-assisted molding method for fiber-reinforced composite materials

A technology of 3D printing and composite materials, applied in the field of 3D printing auxiliary molding of fiber reinforced composite materials, can solve the problems of reducing the mechanical properties of parts, damage of parts, and difficulty in demoulding, and achieve the effect of satisfying dimensional stability

Active Publication Date: 2019-09-10
CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the defects that when composite materials are used to make parts with complex structures, it is difficult to demould, the parts will be damaged to a certain extent by external force, the mechanical properties of the parts will be reduced, and the service life will be shortened. Material 3D printing assisted molding method

Method used

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  • A 3D printing-assisted molding method for fiber-reinforced composite materials
  • A 3D printing-assisted molding method for fiber-reinforced composite materials
  • A 3D printing-assisted molding method for fiber-reinforced composite materials

Examples

Experimental program
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Effect test

Embodiment 1

[0031] This embodiment provides an example of a fiber-reinforced composite material 3D printing-assisted forming method, and its structural schematic diagram is as follows figure 2 shown in .

[0032] The specific technical solutions are as follows:

[0033] (1) FDM 3D printing molding

[0034] According to the three-dimensional map of the aileron rib of the UAV, the generation path diagram of the part is obtained through the Cura slicing software, and the printing parameters are set (layer thickness 0.1, speed 35mm / s, nozzle temperature 195°, hot bed 60°), and according to the part The structure selection uses ABS wire as the main material, polyvinyl alcohol wire as the support material, and a solid core structure as the support form. Turn on the 3D printer, start the printing program, and run the 3D printer to obtain 3D printed parts combined with the support material, such as image 3 shown. The dimensional stability of the fiber prepreg is satisfied when the fiber prep...

Embodiment 2

[0046] This embodiment provides an example of a fiber-reinforced composite material 3D printing-assisted forming method, and the specific technical solution is as follows:

[0047] (1) FDM 3D printing molding

[0048]According to the three-dimensional image of the aileron rib of the UAV, the generation path diagram of the part is obtained through the slicing software Maker, and the printing parameters are set, the layer thickness is 0.2, the speed is 50mm / s, the nozzle temperature is 195°, and the hot bed is 60°, and according to the part structure Choose ABS wire as the main material, polyvinyl alcohol wire as the support material, and use the surrounding structure as the form. Turn on the 3D printer, start the printing program, and run the 3D printer to obtain 3D printed parts combined with the support material.

[0049] (2) Surface roughening of parts

[0050] The ribs obtained in step (1) are roughened by physical methods, the support material on the inner surface of the ...

Embodiment 3

[0060] This embodiment provides an example of a fiber-reinforced composite material 3D printing-assisted forming method, and the specific technical solution is as follows:

[0061] (1) FDM 3D printing molding

[0062] According to the 3D image of the aileron rib of the UAV, use the slicing software Slic3r to obtain the generation path diagram of the part, set the printing parameters, the layer thickness is 0.1, the speed is 35mm / s, the nozzle temperature is 195°, the heat bed is 60°, and according to the part structure Choose ABS wire as the main material, polyvinyl alcohol wire as the support material, and use the surrounding structure as the form. Turn on the 3D printer, start the printing program, and run the 3D printer to obtain 3D printed parts combined with the support material.

[0063] (2) Surface roughening of parts

[0064] The ribs obtained in step (1) are roughened by physical methods, the support material on the inner surface of the ribs is removed, the inner sur...

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Abstract

Provided is a 3D printing assisted forming method for a fiber reinforced composite material. An FDM 3D printing forming method and a continuous fiber composite material forming method are combined, a prepreg coating and an assisting material are laid on the surface of a part in a prepreg-vacuum bag molding composite material forming mode with an FDM 3D formed part as a forming mold, curing of prepreg is completed under a certain degree of temperature and pressure, and a supporting material is removed, cleaned and dried. By integrating the advantages of the flexibility and high precision of FDM 3D printing forming and the advantages of low weight and high strength of the composite material, the defects that FDM 3D printing forming is low in strength while the composite material is can not be separated from the mold easily are overcome, and the fiber reinforced composite material of a complex structure can be formed and manufactured into parts.

Description

technical field [0001] The invention relates to the field of fiber-reinforced composite material molding, and specifically relates to a 3D printing-assisted molding method for fiber-reinforced composite materials. Background technique [0002] Fiber-reinforced polymer composite material is a multi-phase composite material formed with polymer resin as matrix and fiber as reinforcement. Many advantages such as synchronous completion of structural molding and integral molding have been widely used in aviation, aerospace, military equipment, automobiles and other fields that require lightweight. Prepreg-vacuum bag molding is one of the important molding methods of fiber reinforced polymer composites. In the molding method, molds are needed to ensure the internal density, external dimensional accuracy and surface quality of the parts. However, for complex structures Parts, composite parts are difficult to demould, and often need to use external force, which will inevitably cause...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/118B29C64/379B29C64/40B33Y40/00B29C70/34
Inventor 周海峰鞠金山邱颖霞黄钊
Owner CHINA ELECTRONIC TECH GRP CORP NO 38 RES INST
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