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Additive manufacturing method of continuous fiber reinforced composite material

A reinforced composite material and continuous fiber technology, applied in the field of additive manufacturing, can solve problems such as inaccurate fiber arrangement and slow printing speed, and achieve the effect of improving mechanical properties and increasing manufacturing speed

Active Publication Date: 2021-09-24
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a continuous fiber reinforced composite material additive manufacturing method, aiming to solve the problems of slow printing speed and inaccurate fiber arrangement in the prior art

Method used

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  • Additive manufacturing method of continuous fiber reinforced composite material
  • Additive manufacturing method of continuous fiber reinforced composite material
  • Additive manufacturing method of continuous fiber reinforced composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] For cuboid parts, an additive manufacturing method for continuous fiber reinforced composites, including the following steps:

[0070] a) The data of the three-dimensional component of the cuboid part is layered and discrete, and the size of the cuboid part to be printed is defined as a cuboid part with a length of 60mm, a width of 18mm, and a height of 1.2mm. The material is Toray T300B 1000K carbon fiber bundle and 0.06mm thick PLA (polylactic acid) film material. After using commercial software to discretely process the three-dimensional data of cuboid parts, and planning the path and formulating the sewing data of each layer, the control system controls the sewing device according to When layer sewing data is used to sew continuous fibers onto a substrate film. Among them, the sewing path is figure 2 Single-track reciprocating linear scanning mode, layer thickness of 0.06mm, and scanning distance of 1mm.

[0071] b) The control system sends the sewn carbon fiber ...

Embodiment 2

[0074] The material is 200D aramid fiber and 0.06mm thick PLA film material.

[0075] Manufacturing method and part shape are with embodiment 1.

Embodiment 3

[0077] The material is 400D aramid fiber and 0.06mm thick PLA film material.

[0078] Manufacturing method and part shape are with embodiment 1.

[0079] In summary, the present invention provides a continuous fiber reinforced composite material additive manufacturing method. The method of the invention can accurately control the continuous fiber arrangement in the continuous fiber reinforced composite material, can control the volume content of the continuous fiber and improve the mechanical properties of the composite material. Different from the sequential solidification method of other composite material additive manufacturing from point to line, and then from line to surface, the present invention is based on the surface as the basic unit of layer-by-layer accumulation and formation. Each layer only needs to process the outer contour, and multiple sewing equipment can be used at the same time Running, laminating and bonding multiple layers in parallel can greatly increas...

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Abstract

The invention discloses an additive manufacturing method of a continuous fiber reinforced composite material. The manufacturing method comprises the following steps of A, forming continuous fibers on a matrix film in a sewing manner; B, carrying out peripheral contour cutting treatment on the matrix film with the continuous fibers until the matrix film with the continuous fibers in the required contour is cut; C, sequentially carrying out stacking and bonding treatment on the cut matrix film with the continuous fibers; and repeating the steps A, B and C until the continuous fiber reinforced composite material is obtained. According to the method, the arrangement of the continuous fibers in the continuous fiber reinforced composite material can be accurately controlled, the volume content of the continuous fibers can be controlled, and the mechanical property of the composite material can be improved. Different from a sequential solidification mode of other composite material additive manufacturing from point to line and then from line to surface, only the peripheral contour of each layer needs to be processed, multiple layers can be processed in parallel at the same time, and the manufacturing speed of the continuous fiber reinforced composite material can be greatly increased.

Description

technical field [0001] The invention relates to the field of additive manufacturing, in particular to an additive manufacturing method for continuous fiber reinforced composite materials. Background technique [0002] Continuous fiber reinforced polymer matrix composites have the advantages of high specific strength, high specific stiffness, and strong designability, and have been widely used in aerospace, military and other fields. Additive manufacturing technology is an emerging molding process based on the principle of discrete accumulation. Since additive manufacturing technology can freely form complex parts with high efficiency and low cost while giving great freedom in design, it has been gradually applied to continuous fiber reinforced polymer matrix composites. Compared with traditional molding technologies such as resin transfer molding, compression molding, and hot pressing, the continuous fiber-reinforced polymer matrix composites formed by additive manufacturin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C64/147B29C64/393B29C64/314B29C64/379B33Y10/00B33Y40/10B33Y40/20B33Y50/02B29C65/62B29C65/64B29C65/74
CPCB29C64/147B29C64/393B29C64/314B29C64/379B33Y10/00B33Y40/10B33Y40/20B33Y50/02B29C65/62B29C65/64B29C66/7444B29C65/74B29C65/7473
Inventor 熊异王耀辉周利民张国权刘光
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA