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A preparation method of modified polylactic acid material with metal effect for 3D printing

A polylactic acid material and 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of polylactic acid consumables such as brittleness, excessive embrittlement, and easy cracking, and achieve low heat resistance temperature, ensure molding stability, and good toughness.

Active Publication Date: 2020-08-14
诺思贝瑞新材料科技(苏州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the problems of the existing polylactic acid consumables that are relatively brittle, single effect, and easy to degrade, especially the technical problems of excessive embrittlement, easy cracking, and easy degradation after adding fillers, a kind of Preparation method of modified polylactic acid material with metal effect for 3D printing

Method used

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  • A preparation method of modified polylactic acid material with metal effect for 3D printing
  • A preparation method of modified polylactic acid material with metal effect for 3D printing

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Embodiment 1

[0042] This embodiment provides a method for preparing a modified polylactic acid material for 3D printing with a metallic effect, comprising the following steps:

[0043] Prepare the following preparation raw materials in parts by weight: 100 parts of polylactic acid, 100 parts of metal powder, 2 parts of metal pigment, 10 parts of toughening agent, 0.5 part of coupling agent, 0.5 part of lubricant, 0.3 part of hindered phenolic antioxidant, sub 0.2 part of phosphate antioxidant; the polylactic acid selects the 4032D grade of natureworks company (the polylactic acid can be applied to the present invention as long as it is a polylactic acid grade that can adapt to extrusion), and the metal powder is a 500-mesh particle shape copper powder, the metal pigment is 500 mesh scale copper powder, the toughening agent is methyl methacrylate-butadiene-styrene core-shell copolymer, the coupling agent γ-(2,3 - glycidyloxy) propyltrimethoxysilane, the lubricant is ethylene bis stearic aci...

Embodiment 2

[0050] This embodiment provides a method for preparing a modified polylactic acid material for 3D printing with a metallic effect, comprising the following steps:

[0051] Prepare the following preparation raw materials in parts by weight: 100 parts of polylactic acid, 120 parts of metal powder, 3 parts of metal pigment, 10 parts of toughening agent, 0.8 part of coupling agent, 0.5 part of lubricant, 0.3 part of hindered phenolic antioxidant, sub 0.2 part of phosphate antioxidant; The polylactic acid selects the 4043D brand of natureworks company, the metal powder is 400 mesh granular bronze powder, the metal pigment is 500 mesh scaly bronze powder, and the toughening agent is Methyl methacrylate-butyl acrylate core-shell copolymer, the coupling agent is tetraoctyl titanium [two (dilauryl phosphite)], the lubricant is pentaerythritol stearate, the The hindered phenolic antioxidant is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, and the phos...

Embodiment 3

[0058] This embodiment provides a method for preparing a modified polylactic acid material for 3D printing with a metallic effect, comprising the following steps:

[0059] Prepare the following raw materials in parts by weight: 100 parts of polylactic acid, 80 parts of metal powder, 5 parts of metal pigment, 8 parts of toughening agent, 2 parts of coupling agent, 1.5 parts of lubricant, 0.2 part of hindered phenolic antioxidant, sulfur 0.4 parts of ester antioxidants; the polylactic acid selects REVODE190 from Zhejiang Hisun Biomaterials Co., Ltd., the metal powder is 800 mesh granular aluminum powder, and the metal pigment is 600 mesh scaly aluminum silver powder. The toughening agent is a silicone-modified methyl methacrylate-butyl acrylate core-shell copolymer, the coupling agent is three (dioctyl pyrophosphoryloxy) isopropyl titanate, and the lubricant It is a polyester hyperbranched resin, the hindered phenolic antioxidant is 4,6-three (3,5-di-tert-butyl-4-hydroxybenzyl) ...

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Abstract

The invention relates to a preparation method of a modified polylactic acid material for 3D printing, having a metal effect. The method concretely comprises the following steps: preparing the following raw materials, by weight, 100 parts of polylactic acid, 80-150 parts of metal powder, 1-5 parts of a metal pigment, 8-18 parts of a soft-core and hard-shell type core-shell copolymer flexibilizer with methyl methacrylate as the shell, 0.5-2 parts of a coupling agent, 0.5-1.5 parts of a lubricant, 0.2-0.8 part of a hindered phenol antioxidant and 0.1-0.5 part of a phosphite or thioester antioxidant, mixing the metal powder with the metal pigment, spraying a coupling agent solution during mixing, drying the obtained material, mixing the obtained modified metal powder and metal pigment, the polylactic acid, the flexibilizer, the lubricant and the antioxidant, adding the obtained mixture into a double screw extruder, performing extruding granulation, drying obtained pellets, adding the driedpellets into a single screw extruder, extruding the pellets, and performing hot water treatment, cold water treatment and air drying to obtain wires. The modified polylactic acid material prepared inthe invention has the advantages of metal effect, good toughness and non-degradability.

Description

technical field [0001] The invention relates to a method for preparing a modified polylactic acid material for 3D printing with metal effects, and belongs to the technical field of material preparation for 3D printing. Background technique [0002] 3D printing technology is profoundly changing the process of modern manufacturing. It does not require traditional tools, fixtures and machine tools, but is based on digital model files, using powdered metal or plastic and other bondable materials, through layer-by-layer printing. The technology of constructing objects by printing, which is used in jewelry, footwear, industrial design, architecture, engineering and construction (AEC), automotive, aerospace, dental and medical industries, education, geographic information systems, civil engineering, firearms and There are applications in other fields. [0003] Due to the good thermal fluidity, rapid cooling cohesion and high mechanical strength of polymer materials, it has been ra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L33/12C08L67/00C08K13/06C08K9/06C08K9/04C08K3/08C08K5/20C08K5/134C08K5/526C08K5/372C08K5/13C08K5/103B33Y70/10
CPCB33Y70/00C08K2003/0812C08K2003/085C08K2201/005C08K2201/014C08L67/04C08L2205/03C08L2207/53C08L33/12C08K13/06C08K9/06C08K3/08C08K5/20C08K5/1345C08K5/526C08K9/04C08K5/103C08L67/00C08K5/13C08K5/372
Inventor 李振茅伟华熊文治
Owner 诺思贝瑞新材料科技(苏州)有限公司
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