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Carbon fiber reinforced polylactic acid 3D printing wire rod and preparation method thereof

A 3D printing and carbon fiber technology, applied in the field of 3D printing materials, can solve the problems of low elongation, high hardness, and difficult molding

Inactive Publication Date: 2016-11-23
ANHUI CHUNGU 3D PRINTING INTELLIGENT EQUIP IND TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous advancement of technology, 3D printers can print more and more types. Metal is an important printing consumable. In the actual printing process, it often has defects of high hardness and difficulty in forming, which affects the production process. the quality of the product
[0003] 3D printers have the characteristics of simple operation and cheap equipment. However, due to the insufficient strength, low toughness and low elongation of current printing materials, their application in industry is limited. At present, PLA 3D printing wires are usually only used for small toys and mechanical properties. Low model printing problems, product development will further improve the application range of 3D printing, and increase the application range of PLA3D printing wire

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Oxidize the carbon fiber for 30 minutes at a temperature of 150°C;

[0025] (2) Place the oxidized carbon fiber in a silane coupling agent with a volume concentration of 35% at a temperature of 50° C. and soak for 20 minutes to obtain a carbon fiber short rod;

[0026] (3) Mix 92 parts by weight of polylactic acid particles with a particle size of 35 μm and 8 parts by weight of short carbon fiber rods with a length of 20 μm at a temperature of 155°C for 30 minutes, then perform mechanical molding, and cool with water at 50°C to obtain Carbon fiber reinforced polylactic acid 3D printing filament A1.

Embodiment 2

[0028] (1) Oxidize the carbon fiber for 40 minutes at a temperature of 200°C;

[0029] (2) Place the oxidized carbon fiber in a silane coupling agent with a volume concentration of 65% at a temperature of 65° C. and soak for 30 minutes to obtain a carbon fiber short rod;

[0030] (3) 88 parts by weight of polylactic acid particles with a particle size of 40 μm and 12 parts by weight of short carbon fiber rods with a length of 80 μm were mixed at a temperature of 175°C for 40 minutes, followed by mechanical molding and cooled by water at 65°C to obtain Carbon fiber reinforced polylactic acid 3D printing filament A2.

Embodiment 3

[0032] (1) Oxidize the carbon fiber for 35 minutes at a temperature of 180°C;

[0033] (2) Place the oxidized carbon fiber in a silane coupling agent with a volume concentration of 50% at a temperature of 60° C. and soak for 25 minutes to obtain a carbon fiber short rod;

[0034] (3) 90 parts by weight of polylactic acid particles with a particle size of 38 μm and 10 parts by weight of short carbon fiber rods with a length of 50 μm were mixed at a temperature of 160 ° C for 35 minutes, followed by mechanical molding and cooled by water at 55 ° C to obtain Carbon fiber reinforced polylactic acid 3D printing filament A3.

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Abstract

The invention discloses a carbon fiber reinforced polylactic acid 3D printing wire rod and a preparation method thereof. The method comprises the following steps: performing oxidation treatment on carbon fibers; soaking the carbon fibers after oxidation treatment into a silane coupling agent, thereby preparing a carbon fiber stub; mixing polylactic acid with carbon fiber stub, mechanically forming and cooling, thereby obtaining the carbon fiber reinforced polylactic acid 3D printing wire rod, wherein the length of the carbon fiber stub is less than 100mum. The 3D printing wire rod prepared according to the method has excellent mechanical property.

Description

technical field [0001] The invention relates to a 3D printing material, in particular to a carbon fiber reinforced polylactic acid 3D printing wire and a preparation method thereof. Background technique [0002] With the continuous advancement of technology, 3D printers can print more and more types. Metal is an important printing consumable. In the actual printing process, it often has defects of high hardness and difficulty in forming, which affects the production process. the quality of the product. Polylactic acid (PLA) has a certain tensile strength and ductility. There are many processing methods for polylactic acid, and the molding process is simple. It is widely used in 3D printing and can be produced by various common processing methods, such as: melt extrusion molding, injection molding , blown film forming, foam forming and vacuum forming, have similar forming conditions with widely used polymers, and it also has the same printing performance as traditional films...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08K9/06C08K9/00C08K7/06B33Y70/00
CPCB33Y70/00C08K7/06C08K9/00C08K9/06C08K2201/004C08L2205/14C08L67/04
Inventor 黄仲佳王心生杨军吕晨郑兰斌吴志华
Owner ANHUI CHUNGU 3D PRINTING INTELLIGENT EQUIP IND TECH RES INST CO LTD