Modified PLA (polylactic acid) material for 3D printers

A 3D printer and modification technology, which is applied in the field of modified PLA materials for 3D printers, can solve the problems of insufficient strength, poor toughness, and poor heat resistance, and achieve improved impact resistance, dispersion ability, and absorption ability. The effect of toughness

Active Publication Date: 2015-02-04
CHANGZHOU HANBANG ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although PLA has many of the advantages mentioned above, due to the characteristics of the material itself, it still has defects such as insufficient strength, brittleness, poor heat resistance, and poor toughness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The modified PLA material for 3D printers of the present invention is composed of the following components, wherein each component is calculated by mass percentage, 60 parts of commercially available polylactic acid, and the present invention has no limitation on the properties of polylactic acid, toughening agent 12 parts of polyoxyethylene laurate, 5 parts of nano-titanium dioxide, 6 parts of lignin, 7 parts of polybutyl acrylate, 5 parts of crosslinking agent 1,3,5-benzenetricarboxylic acid, 3 parts of filler acrylonitrile, even Joint agent nonylphenol polyethylene oxide - 4 ether 2 parts.

[0033] During preparation, melt the polylactic acid particles at a high temperature of about 160°C, add the weighed cross-linking agent for mixing, stir at a high speed for about 15 minutes, and carry out grafting reaction; after stirring evenly, cool to 45°C, put it into the extruder, and Heating to 180°C, extruding to obtain polylactic acid plastic with grafted crosslinking ag...

Embodiment 2

[0035] The modified PLA material for 3D printers of the present invention is composed of the following components, wherein each component is calculated by mass percentage, 54 parts of commercially available polylactic acid, and the present invention has no restrictions on the properties of polylactic acid, toughening agent 14 parts of polyoxyethylene dilaurate, 6 parts of nano-zinc oxide, 7 parts of lignin, 10 parts of polyethylacrylate, 2 parts of methyl acetoacetate as a crosslinking agent, 3 parts of acrylonitrile as a filler, and coupling agent Polyoxyethylene laurate - 12 esters 4 parts.

[0036] During preparation, melt the polylactic acid particles at a high temperature of about 165°C, add the weighed cross-linking agent for mixing, stir at a high speed for about 20 minutes, and carry out the grafting reaction; after stirring evenly, cool to 35°C, put it into the extruder, and Heating to 190°C, extruding to obtain polylactic acid plastic with grafted crosslinking agent...

Embodiment 3

[0038] The modified PLA material for 3D printers of the present invention is composed of the following components, wherein each component is calculated by mass percentage, 63 parts of commercially available polylactic acid, and the present invention has no restrictions on the properties of polylactic acid, toughening agent 18 parts of oleic acid amide polyoxyethylene ether, 4 parts of nano-nickel oxide, 5 parts of lignin, 4 parts of polymethyl acrylate, 1 part of crosslinking agent methyl acetoacetate, 2 parts of filler acrylonitrile, coupling agent castor Polyoxyethylene oleic acid - 5 esters 3 parts.

[0039]During the preparation, the polylactic acid particles were melted at a high temperature of about 160°C, added the weighed cross-linking agent for mixing, stirred at a high speed for about 18 minutes, and carried out the grafting reaction; after stirring evenly, cooled to 40°C, put it into the extruder, and Heating to 230°C, extruding to obtain polylactic acid plastic wi...

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PUM

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Abstract

The invention discloses a modified PLA (polylactic acid) material for 3D printers, which comprises the following components in parts by mass: 30-88 parts of PLA, 2-25 parts of toughener, 0.5-18 parts of nano oxide, 5-30 parts of lignin, 4-35 parts of polyacrylate, 1-12 parts of crosslinking agent, 2-20 parts of filler and 1-10 parts of coupling agent. The lignin can form a network structure to be dispersed inside the PLA structure, thereby enhancing the strength of the PLA through the network structure. The coupling agent is used for enhancing the dispersity of the filler in the PLA, thereby further enhancing the impact resistance of the filler reinforcing material. The nano oxide is fine particles (nanoparticles) with high rigidity, and the crack in the molecular structure derivates when meeting the nanoparticles in the expansion process, so that the energy is absorbed, thereby achieving the goal of toughening.

Description

[0001] technical field [0002] The invention relates to a material for a 3D printer, in particular to a modified PLA material for a 3D printer. Background technique [0003] 3D printing is a kind of rapid prototyping technology. It is a technology based on digital model files and using bondable materials such as powdered metal or plastic to construct objects by layer-by-layer printing. 3D printing is usually achieved using digital technology material printers. It is often used to make models in the fields of mold manufacturing and industrial design, and is gradually used in the direct manufacture of some products. There are already parts printed using this technology. The technology has applications in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms, and others. [0004] FDM is the hot-melt deposition solidif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L33/08C08L97/00C08L71/00C08K3/22
Inventor 黄旭辉赵厚华顾建军
Owner CHANGZHOU HANBANG ENG PLASTIC
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