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Three-dimensional printing forming method of long fiber thermoplastic composite material component

A composite material component and three-dimensional printing technology, which is applied in the direction of additive processing, processing material handling, 3D object support structure, etc., can solve the problems of molding window and molding process control difficulties, so as to improve interface bonding performance and improve mechanical properties , to achieve the effect of 3D printing

Inactive Publication Date: 2017-03-22
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-assisted injection molding can make the design have more freedom, save materials, light product weight and tool cost, etc., but because of the addition of additional molding parameters, the control of the molding window and molding process becomes more difficult

Method used

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  • Three-dimensional printing forming method of long fiber thermoplastic composite material component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: The long-fiber thermoplastic composite member includes yarns in a 0° direction, yarns in a 45° direction, yarns in a 90° direction and yarns in a 135° direction. The yarn is made of 3K carbon fiber yarn, and the thermoplastic resin is made of polyphenylene sulfide. The composite member thickness is 5mm.

[0027] Specific implementation steps:

[0028] (1) Layer the CAD model of the composite material component along the Z direction to generate the layer data and cross-sectional profile data of the component;

[0029] (2) Two bundles of 3K carbon fiber yarns are respectively fed from the yarn delivery tube (i 1 ) and yarn reel (i 2 ), through the fiber spreading mechanism (3) to form a yarn belt with a certain width, and transport it to the compound device (4); at the same time, according to the current layer data, select the corresponding proportion of polyphenylene sulfide through the extrusion device (1) Melting extrusion, forming a resin film with a ce...

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Abstract

The invention discloses a three-dimensional printing forming method of a long fiber thermoplastic composite material component, and belongs to the field of composite material forming technologies. A reinforced yarn is expanded as a thinner yarn strip, and is fully infiltrated with a drawn resin strip to form a single-layer prepreg yarn; the single-layer prepreg yarn is extruded by a shaping device to form a prepreg tow with appointed shape and size; and the prepreg tow is guided by a guide device to bond with a previous layer of composite material to form a composite material laminating structure after heating fusion by a compaction device. Through unfolding of continuous fibers and drawing of a basal body material, the method effectively improves the infiltration effect of the yarn and the resin so as to improve the interface bonding strength of the fiber and the basal body; the prepreg tow can be printed by any angle; and meanwhile, after the prepreg tow is compacted by the compaction device, the fiber volume fraction is prominently increased, so that the added material manufacturing of a high-performance composite material component with complex structure can be realized.

Description

technical field [0001] The invention relates to a three-dimensional printing forming method of a long fiber reinforced thermoplastic composite material component, and belongs to the technical field of composite material forming. The invention is mainly used to prepare long-fiber reinforced thermoplastic composite materials, which can significantly improve the interface bonding effect between fibers and resins and the fiber volume fraction of composite components. Background technique [0002] At present, the molding processes of long fiber reinforced thermoplastic composites mainly include roll forming, autoclave molding and water-assisted injection molding. In the roll forming process, the thermoplastic sheet is heated above the melting point of the substrate on the pressure roller, and the thermoplastic material is processed into the required shape through the continuous movement of multiple pairs of pressure rollers. The biggest advantage of the roll forming process lies...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/16B29C70/38B29C70/54B29C64/176B29C64/307B29C64/393B33Y10/00B33Y40/00B33Y50/02B29K23/00B29K77/00B29K67/00B29K81/00B29K71/00B29K79/00
CPCB29C70/205B29C70/386B29C70/54B29K2023/12B29K2067/00B29K2071/00B29K2077/00B29K2079/08B29K2081/04B33Y10/00B33Y40/00B33Y50/02
Inventor 单忠德张群刘丰战丽吴晓川王争
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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