3D printing wire enhanced with natural bast fiber and preparation method thereof

A fiber-reinforced, 3D printing technology, applied in the field of 3D printing materials, can solve problems such as application limitations, blockage of hot ends, unfavorable processing, etc., to achieve the effects of wide range of uses, good environmental performance and light weight

Active Publication Date: 2017-04-26
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The glass transition temperature of PLA is also the biggest shortcoming of this material, which is only about 60°C, so its application is greatly limited.
PLA is easy to adhere and expand after melting, which often blocks the hot end (especially the all-metal hot end) and is not conducive to its processing

Method used

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  • 3D printing wire enhanced with natural bast fiber and preparation method thereof
  • 3D printing wire enhanced with natural bast fiber and preparation method thereof
  • 3D printing wire enhanced with natural bast fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The raw material formula in the present embodiment is as follows (according to mass percent, hereinafter are all the same as the present embodiment): 60% of low melting point polymer fiber; 35% of natural hemp fiber; 3% of silane coupling agent; Ethylene bis stearic acid amide 1% stearic acid 1%; low melting point fiber is PLA, natural hemp fiber is hemp.

[0029] 1. Mechanically degumming the hemp fiber and modifying the surface of the hemp fiber; spray coupling agent and corresponding additives to treat the hemp fiber to improve the polarity of the hemp fiber. The selected low-melting point fiber PLA is pretreated, and the PLA fiber is treated by spraying coupling agent and corresponding auxiliary agents.

[0030] 2. Blend low-melting polymer fibers and hemp fibers: Lay a layer of finely opened low-melting polymer fibers, then lay a layer of finely opened hemp fibers, and alternately lay multiple layers of low-melting polymer fibers And hemp fibers to form felt.

[...

Embodiment 2

[0035] The raw material formula in the present embodiment is as follows: low melting point polymer fiber 55%; Natural hemp fiber 42%; Maleic anhydride 2%; Stearic acid 1%; Low melting point fiber is ABS, and natural hemp fiber is jute.

[0036] 1. The jute fiber is mechanically degummed, and the surface of the hemp fiber is modified. The jute fiber is treated by spraying the coupling agent and the corresponding auxiliary agent to improve the polarity of the jute fiber. The selected low-melting fiber ABS is pretreated, and the ABS fiber is treated by spraying coupling agent and corresponding auxiliary agents.

[0037] 2. Blending low-melting polymer fibers and jute fibers: laying a layer of finely opened low-melting polymer fibers, then laying a layer of finely opened jute fibers, and alternately laying multiple layers of low-melting polymer fibers and jute fibers, forming felt.

[0038] 3. Acupuncture the felt, then roll it up into strips.

[0039] 4. Pass the strip-shaped f...

Embodiment 3

[0042] The raw material formula in this embodiment is as follows: low-melting point polymer fiber 50%; natural hemp fiber 45%; silane coupling agent 2%; stearic acid 1%; low-melting point fiber is PP, natural hemp fiber is flax.

[0043] 1. The flax fiber is mechanically degummed, and the surface of the flax fiber is modified. The flax fiber is treated by spraying the coupling agent and the corresponding auxiliary agent to improve the polarity of the flax fiber. The selected low-melting point fiber PP is pretreated, and the PP fiber is treated by spraying coupling agent and corresponding auxiliary agents.

[0044] 2. Blend low-melting polymer fibers and flax fibers: Lay a layer of finely opened low-melting polymer fibers PP, then lay a layer of finely opened flax fibers, and alternately lay multiple layers of low-melting polymer fibers and Flax fibers, forming felt.

[0045] 3. Acupuncture the felt, then roll it up into strips.

[0046] 4. Heat the strip-shaped felt at 165°C...

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Abstract

The invention discloses a 3D printing wire enhanced with a natural bast fiber and a preparation method thereof and belongs to the field of the 3D printing wire and the preparation thereof. The raw materials include the natural bast fiber, low-melting-point polymer, compatilizer and other auxiliaries, wherein the content of the low-melting-point polymer is 50-60%, the content of the natural bast fiber is 30-40% and the balance includes the other auxiliaries. The natural bast fiber and the low-melting-point polymer are utilized and are subjected to surface modifying treatment, blending, heating pressurizing extruding and twisting to obtain the 3D printing wire enhanced with the natural bast fiber disclosed by the invention; the 3D printing wire has excellent environmental protection property, light weight and high rigidity and strength; the 3D printing wire can be used for replacing a common 3D plastic consumable material, is nontoxic and environment-friendly, has high strength and excellent comprehensive property and has higher economic value and extensive development space.

Description

technical field [0001] The invention belongs to the technical field of 3D printing materials. Background technique [0002] 3D printing is a technology that uses bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. With the progress of society, the singleness of 3D printing materials also restricts the development of 3D printing technology to some extent. Taking FDM printing as an example, the materials that can be printed are several conventional materials such as ABS plastic, fused wire, FDM ceramic material, wood-plastic composite material, and FDM support material. In order to meet the needs of development, 3D printing still needs to continuously develop new materials, diversify the development of 3D printing materials, and establish a corresponding material supply system, which will greatly expand the application of 3D printing technology. [0003] Most of the existing 3D printing materials are mainly polymers, such as ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/04D06M13/203D04H1/4382D04H1/46D04H1/425D06M101/06
CPCD02G3/04D04H1/425D04H1/4382D04H1/46D06M13/203D06M2101/06D10B2201/01D10B2201/04D10B2201/06D10B2201/08D10B2201/10D10B2321/021D10B2321/022D10B2331/04
Inventor 李志刚刘雪强韩洪江马品奎徐进
Owner JILIN UNIV
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