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Continuous fiber reinforced resin base composite 3D printing wire preparing method and device

A reinforced resin-based, 3D printing technology, applied in the direction of additive processing, 3D object support structure, manufacturing tools, etc., can solve the problems of thermoplastic resin defects, difficult fiber and resin infiltration, low strength and hardness, etc., to improve various performances , expand the application field, the effect of excellent comprehensive performance

Inactive Publication Date: 2018-08-17
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

3D printing consumables are the material basis of 3D printing and also the bottleneck that restricts the further development and application of 3D printing
However, due to the defects of the chopped fiber itself, there are always limits to its addition amount and fiber length; the thermoplastic resin itself has many shortcomings such as shrinkage cracking, warping deformation, poor heat resistance and corrosion resistance, and low strength and hardness; and it is only simple. Blending dry fibers with molten resin makes it difficult to fully infiltrate the fibers and resin, resulting in poor fiber-resin interface of the component and obvious defects in the thermoplastic resin; overall, its performance for 3D printing composite components has been enhanced , but with limited enhancement
[0004] In summary, there is currently no method or device for the preparation of high-performance continuous fiber-reinforced resin-based composite materials for 3D printing filaments

Method used

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  • Continuous fiber reinforced resin base composite 3D printing wire preparing method and device

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] A method for preparing continuous fiber-reinforced resin-based composite material 3D printing filaments, selecting dry fiber tows and thermosetting resin prepolymers and their initiators, thermoplastic resins or mixed resin systems that are solid at room temperature as raw materials, and fiber filaments The bundles are sequentially processed by multiple spreading, splitting, pre-impregnated hot-melt resin, and yarn joining to obtain continuous fiber-reinforced resin-based composite 3D printing filaments.

[0024] The dry fiber tow is one or more of carbon fiber, glass fiber and Kevlar fiber, one or more.

[0025] refer to figure 1 , the device used in the above-mentioned preparation method includes a fiber tow 2 that is placed on the unwinding mechanism 1, and the fiber tow 2 is released by the unwinding mechanism 1 and then passes through the unwinding guide r...

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Abstract

The invention discloses a continuous fiber reinforced resin base composite 3D printing wire preparing method and device. The method comprises the steps that a dry fiber bundle and thermosetting resinprepolymer solid under the normal temperature, an initiating agent of the prepolymer, thermoplastic resin or a mixed resin system is taken as a preparing raw material, the fiber bundle is sequentiallysubject to multi yarn spreading, yarn dividing, thermoplastic resin preimpregnation and yarn combining treatment, and a continuous fiber reinforced resin base composite 3D printing wire is obtained;the device comprises the fiber bundle wound on an unwinding mechanism, the fiber bundle sequentially passes through a clamping mechanism and a tension control wheel and receives infrared dual-face irradiation sent by an upper infrared lamp and a lower infrared lamp, after irradiation, the fiber bundle sequentially passes through the yarn spreading mechanism and an air flow jetting yarn spreading mechanism and then enters a preimpregnation groove to be pre-impregnated with hot melt resin, after complete impregnation, the fiber bundle sequentially passes through a yarn combining nozzle and a cooling mechanism and is wound on a winding material cylinder. Fiber and resin are sufficiently soaked, the fiber-resin microcosmic surface is controllable in combination, and the comprehensive performance of a forming component is excellent.

Description

technical field [0001] The invention relates to the technical field of 3D printing of composite materials, in particular to a preparation method and device for 3D printing filaments of continuous fiber-reinforced resin-based composite materials. Background technique [0002] 3D printing technology is based on a digital model, through the use of bondable materials such as metal powder or plastic linear wire, in a layer-by-layer printing or layer-by-layer selective bonding method to construct rapid additive materials. Manufacturing Technology. 3D printing consumables are the material basis of 3D printing and also the bottleneck that restricts the further development and application of 3D printing. At present, 3D printing consumables are mainly divided into four types: ceramics, metals, composite materials and polymers. Commonly used 3D printing consumables are mainly pure thermoplastic filaments, including acrylonitrile-butadiene-styrene copolymer (ABS), polylactic acid (PLA...

Claims

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Application Information

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IPC IPC(8): B29C64/314B33Y40/00
Inventor 段玉岗明越科丁仲秋
Owner XI AN JIAOTONG UNIV
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