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Polylactic acid 3D printing material and preparation method and application thereof

A 3D printing and polylactic acid technology, applied in heat exchange materials, chemical instruments and methods, additive processing, etc., can solve the problems of no heat conduction or conduction, and achieve the effect of light weight, smooth surface and large market value

Inactive Publication Date: 2018-11-30
HUNAN GUOSHENG GRAPHITE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, materials commonly used in FDM molding technology include polylactic acid, ABS, nylon, etc. Among them, polylactic acid is widely used in FDM printing because of its biodegradability and good printing effect; but the mainstream polylactic acid consumables in the market are made of different colors. , or to toughen polylactic acid, and has no special functions such as thermal conductivity or electrical conductivity

Method used

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  • Polylactic acid 3D printing material and preparation method and application thereof
  • Polylactic acid 3D printing material and preparation method and application thereof
  • Polylactic acid 3D printing material and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1 A kind of polylactic acid 3D printing material 1 and wire rod 1

[0029] A polylactic acid 3D printing material, the polylactic acid 3D printing material is composed of the following components in parts by mass: polylactic acid 65g, nitrogen-doped graphene 10g, antioxidant 0.5g, dispersant 4g, nucleating agent 0.5 g.

[0030] Wherein, the molecular weight of the polylactic acid is 40000.

[0031] Add the dried polylactic acid, nitrogen-doped graphene, antioxidant, dispersant and nucleating agent into a high-speed mixer, mix at a high speed for 3 minutes, and add the mixed materials into the barrel of a single-screw extruder at 180 Extrude and mix at ℃, air-dry, and pelletize to obtain polylactic acid particle 3D printing material.

[0032] Then dry the above-mentioned polylactic acid particle 3D printing material and add it to the plastic extruder. There is a water tank with ice water to fully cool the formed wire; it enters the tractor and rolls it up, ...

Embodiment 2

[0033] Embodiment 2 A kind of polylactic acid 3D printing material 2 and wire rod 2

[0034] A polylactic acid 3D printing material, the polylactic acid 3D printing material is composed of the following components in parts by mass: polylactic acid 30g, nitrogen-doped graphene 30g, antioxidant 0.5g, dispersant 3g, nucleating agent 0.1 g.

[0035] Wherein, the molecular weight of the polylactic acid is 100,000.

Embodiment 3

[0036] Embodiment 3 A kind of polylactic acid 3D printing material 3 and wire rod 3

[0037] A polylactic acid 3D printing material, the polylactic acid 3D printing material is composed of the following components in parts by mass: 90g of polylactic acid, 15g of nitrogen-doped graphene, 3g of antioxidant, 7g of dispersant, and 1g of nucleating agent.

[0038] Wherein, the molecular weight of the polylactic acid is 60000.

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PUM

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Abstract

The invention relates to a polylactic acid 3D printing material and a preparation method and an application thereof. The polylactic acid 3D printing material consists of the following components in parts by mass: 30-90 parts of polylactic acid, 10-30 parts of nitrogen-doped graphene, 0.5-3 parts of an antioxidant, 3-7 parts of a dispersant, and 0.1-1 part of a nucleating agent, wherein the molecular weight of the polylactic acid is 40000-100000. The polylactic acid 3D printing material provided by the invention has the advantages of low density, thermal conductivity and electrical conductivity, and can meet the market demand for FDM special consumable materials with high thermal conductivity, electrical conductivity and low specific gravity.

Description

technical field [0001] The invention relates to the field of 3D printing materials, in particular to a polylactic acid 3D printing material and its preparation method and application. Background technique [0002] "Fused Deposition Modeling" (Fused Deposition Modeling, FDM) rapid prototyping technology is to use plastic materials to melt at high temperature, and use computer-controlled layer-by-layer accumulation molding. This technology can be used to form parts of almost any geometric shape, including molds of various complex shapes, industrial parts, prototypes, etc. required in industrial production. [0003] "Fused deposition" rapid prototyping technology can be applied to a wide range of polymer materials, including low temperature resistant materials (TPU, EVA, rubber, silicone rubber), commonly used polymer materials (PP, PE, ABS), high temperature resistant materials (PC, PA, PEEK, PI, PEI), biodegradable polymer materials (PCL, PLA, PHA), etc. At present, materia...

Claims

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Application Information

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IPC IPC(8): C08L67/04C08L23/08C08L91/06C08K3/04C08K5/526C09K5/14B33Y70/00
CPCC08L67/04B33Y70/00C08L2201/04C08L2203/20C09K5/14C08L23/0853C08L23/0815C08L91/06C08K3/042C08K5/526
Inventor 林前锋
Owner HUNAN GUOSHENG GRAPHITE TECH CO LTD
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