3D printing plant fiber composite wire with shape memory function and preparation method of 3D printing plant fiber composite wire

Active Publication Date: 2019-02-22
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of high cost of thermoplastic polyurethane elastomer as a material for 3D printing, the present invention provides a plant fiber composite wire with shape memory function for 3D printing and its preparation method

Method used

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  • 3D printing plant fiber composite wire with shape memory function and preparation method of 3D printing plant fiber composite wire
  • 3D printing plant fiber composite wire with shape memory function and preparation method of 3D printing plant fiber composite wire

Examples

Experimental program
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Effect test

Embodiment 1

[0027] A plant fiber composite wire with shape memory function for 3D printing. The composite wire includes the following components in parts by mass: 5-45 parts of plant fiber powder, 55-95 parts of TPU and 0.5-2 parts of lubricant.

Embodiment 2

[0029] A plant fiber composite wire for 3D printing with shape memory function, the composite wire includes the following components in parts by mass: 5-45 parts of plant fiber powder, 55-95 parts of TPU, 1-20 parts of modifier and 0.5 ~2 parts lubricant.

Embodiment 3

[0031] A method for preparing a plant fiber composite wire for 3D printing with shape memory function, the steps of the preparation method are as follows: 5-45 parts of plant fiber powder, 55-95 parts of TPU, 1-20 parts of modifier and 0.5- 2 parts of lubricants are fully mixed and the obtained materials are melted and extruded through a parallel twin-screw extruder in the same direction, and then crushed into pellets, which are put into a single-screw extruder, and the pellets are melted at a certain temperature. Pulling speed to obtain plant fiber composite filaments for fused deposition 3D printing.

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Abstract

The invention belongs to the technical field of 3D printing and in particular relates to a 3D printing plant fiber composite wire with a shape memory function and a preparation method of the 3D printing plant fiber composite wire. The plant fiber composite wire comprises raw materials: plant fiber powder, TPU, a modifier and a lubricant. The preparation method comprises the preparation steps as follows: carrying out melt extrusion on a material obtained by sufficiently mixing the plant fiber powder, TPU, the modifier and the lubricant by using a parallel double-screw extruder, then, smashing the material to form aggregates; placing the aggregates into a single-screw extruder, melting the aggregates at a certain temperature, and dragging the molten aggregates at a certain speed to obtain the melted deposition type 3D printing plant fiber composite wire. By using the 3D printing plant fiber composite wire, the problem of relatively high cost caused by adopting a thermoplastic polyurethane elastomer as a 3D printing material is solved, not only is the material cost reduced, but also the interfacial compatibility between TPU and the plant fiber powder is improved by modifying TPU and the plant fiber powder, so that the prepared composite wire has relatively strong toughness and shape memory restorability.

Description

technical field [0001] The invention belongs to the technical field of 3D printing, and in particular relates to a plant fiber composite wire for 3D printing with a shape memory function and a preparation method thereof. Background technique [0002] At present, the importance of 3D printing technology has been verified and widely used in industry. Among many 3D printing technologies, Fused Deposition Modeling (FDM) technology is the most common. Its equipment has simple structure, low price, and convenient operation process. The printing process is to melt thermoplastic filamentary materials from the heating nozzle and extrude them according to the designed trajectory. to construct 3D solids. [0003] Based on the characteristics of FDM technology, this technology can print a variety of thermoplastic materials and their composite materials, but it is rarely able to manufacture soft structural products with arbitrary complex shapes. Obviously, proposing more new composite ...

Claims

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Application Information

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IPC IPC(8): D01F8/16D01F8/18D01F1/10B33Y70/00C08L75/04C08L97/02C08L23/06C08L51/04C08L23/12C08L51/06C08L23/30C08K5/09C08K5/098
CPCB33Y70/00C08L75/04D01F1/10D01F8/16D01F8/18C08L97/02C08L23/06C08L51/04C08L23/12C08L51/06C08L23/30C08K5/09C08K5/098
Inventor 许民毕红杰郭蕊任泽春贾鑫
Owner NORTHEAST FORESTRY UNIVERSITY
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