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A polylactic acid toughened material for 3D printing and its preparation method

A 3D printing and polylactic acid technology, applied in the field of 3D printing materials, can solve the problems of increased shrinkage of PLA, rough surface, warping of products, etc., and achieve low shrinkage, high regularity of extrusion molding, and wide application of printing Effect

Active Publication Date: 2016-08-24
SHENZHEN ESUN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are many types of toughening agents for polylactic acid, but the shrinkage rate of the toughened PLA increases and the cooling slows down, which will lead to problems such as product warping and surface roughness during the printing process.

Method used

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  • A polylactic acid toughened material for 3D printing and its preparation method
  • A polylactic acid toughened material for 3D printing and its preparation method
  • A polylactic acid toughened material for 3D printing and its preparation method

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Embodiment Construction

[0052] The present invention will be further described below in combination with preferred embodiments.

[0053] The present invention provides a polylactic acid toughened material for 3D printing and its preparation method, which is illustrated by the following examples. In each of the following examples, polylactic acid is 100 parts, and the selection of other components is as follows Shown in the table, wherein, in embodiment 1~4, 1 part=50g.

[0054]

[0055]

[0056] The low-melting point resin-coated inorganic powder in the above Examples 1 to 4 adopts the schemes shown in the following tables respectively, and in the following Examples 1-1 to 4-1, 1 part = 20 g.

[0057]

[0058] Taking the above example 1-1 as an example, the treatment method of the inorganic powder coated with low melting point resin is as follows:

[0059] 1) Dry 100 parts of calcium carbonate at 105°C until the water content is less than 0.3%, add it to the high mixer, heat the high mixer ...

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Abstract

The invention discloses a polylactic acid toughened material for 3D printing, which comprises polylactic acid and the following components in percentage by mass (on the basis of polylactic acid): 5-25% of toughener, 0.5-2.0% of lubricant, 0.5-2.0% of oxidized polyethylene wax, 0.3-1.0% of white oil, 5-25% of low-melting-point resin-coated inorganic powder and 0.3-0.9% of antioxidant. The material prepared by the technical scheme has the advantages of favorable toughness, high extrusion forming regularity and favorable line roundness. The printing proves that the product has the advantages of low shrinkage, no edge lifting, no cracking, high cooling speed and favorable appearance and has wide printing application range.

Description

technical field [0001] The invention relates to the field of 3D printing materials, in particular to a polylactic acid toughened material for 3D printing and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of 3D printing technology, due to the advantages of polylactic acid itself in environmental protection and printing performance, polylactic acid materials have become popular 3D printing consumables, but polylactic acid materials themselves have low toughness and generally require Toughen polylactic acid to broaden its scope of application. The toughened PLA will inevitably have increased shrinkage and slower cooling, which will lead to problems such as product warping and surface roughness during the printing process. [0003] In the prior art, the toughness and fluidity of the material are improved by adding impact modifiers and plasticizers, but at the same time, the shrinkage rate of the material is increased and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L23/30C08L91/06C08K9/10C08K3/26C08K3/34B29C47/92B29C67/24B33Y10/00B33Y70/00B29C48/92
Inventor 肖湘莲王伟杨义浒陈翔邱军李娜娜
Owner SHENZHEN ESUN IND
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