A kind of high toughness matt modified polylactic acid material for 3D printing and preparation method thereof

A polylactic acid material, 3D printing technology, applied in the direction of additive processing, etc., can solve the problems of poor toughness and high gloss, and achieve the effect of improving poor toughness, broadening the application field and excellent printing effect.

Active Publication Date: 2021-01-05
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: to solve the technical problems of poor toughness and high gloss of existing 3D printed polylactic acid products, to provide a high toughness matt modified polylactic acid material for 3D printing and its preparation method

Method used

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  • A kind of high toughness matt modified polylactic acid material for 3D printing and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0035] The present embodiment provides a kind of modified polylactic acid material for 3D printing with high toughness and matteness, comprising the following components by weight:

[0036]100 parts of polylactic acid, 10 parts of primary toughening agent, 8 parts of auxiliary toughening agent, 25 parts of calcium carbonate powder (2000 mesh), 5 parts of silica matting powder, 0.2 part of titanate coupling agent, antioxidant 0.3 parts, 0.1 parts of light stabilizer, 0.3 parts of lubricant;

[0037] The polylactic acid is 3052D from natureworks. Under the test conditions of a temperature of 210°C and a load of 2.16kg, the melt mass flow rate of 3052D is 14g / 10min; the main toughening agent is methyl methacrylate-butadiene - Styrene core-shell copolymer, the auxiliary toughening agent is glycidyl methacrylate grafted ABS; the silica matting powder is selected from Degussa silica matting powder OK412; the titanate coupling agent is selected from three (dioctyl base pyrophosphory...

Embodiment 2

[0046] The present embodiment provides a kind of modified polylactic acid material for 3D printing with high toughness and matteness, comprising the following components by weight:

[0047] 100 parts of polylactic acid, 15 parts of primary toughening agent, 8 parts of auxiliary toughening agent, 40 parts of barium sulfate powder (1250 mesh), 3 parts of silica matting powder, 0.5 part of titanate coupling agent, antioxidant 0.6 parts, 0.6 parts of light stabilizer, 0.3 parts of lubricant;

[0048] The polylactic acid comprises Cereplast from Trellis Bioplastics 4001 (70 parts) and 3260HP (30 parts), under the test conditions of a temperature of 210 ℃ and a load of 2.16kg, the melt mass flow rate of Cereplast Compostables 4001 is 3g / 10min, and the melt mass flow rate of 3260HP is 65g / 10min. 10min; the main toughening agent is methyl methacrylate-butadiene-styrene core-shell copolymer, the auxiliary toughening agent is ethylene-methyl acrylate-glycidyl methacrylate; the silica ...

Embodiment 3

[0057] The present embodiment provides a kind of modified polylactic acid material for 3D printing with high toughness and matteness, comprising the following components by weight:

[0058] 100 parts of polylactic acid, 11 parts of primary toughening agent, 5 parts of auxiliary toughening agent, 20 parts of barium sulfate powder (1250 mesh), 6 parts of silica matting powder, 0.4 part of titanate coupling agent, antioxidant 0.1 part, 0.6 part of light stabilizer, 0.3 part of lubricant;

[0059] The polylactic acid contains natureworks 4032D (50 parts) and 3251D (50 parts). Under the test conditions of a temperature of 210°C and a load of 2.16kg, the melt mass flow rate of 4032D is 7g / 10min, and the melt of 3251D The mass flow rate is 80g / 10min; the main toughening agent is methyl methacrylate-butyl acrylate core-shell copolymer, the auxiliary toughening agent is maleic anhydride grafted POE; the silica matting powder is Tosoh II Silicon oxide matting powder E-1009; titanate co...

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Abstract

The invention relates to a high-toughness matte modified polylactic acid material for 3D printing and a preparation method of the high-toughness matte modified polylactic acid material. The modified polylactic acid material is prepared from, by weight, 100 parts of polylactic acid, 10-15 parts of a main toughening agent, 5-8 parts of an auxiliary toughening agent, 20-40 parts of filler, 3-6 partsof silicon dioxide matting powder, 0.1-0.5 part of a titanate coupling agent, 0.1-0.6 part of an antioxidant, 0.1-0.6 part of a light stabilizer and 0.2-0.5 part of a lubricant, wherein the main toughening agent is a soft-core hard-shell type core-shell copolymer with methyl methacrylate as a shell, the auxiliary toughening agent refers to an elastomer toughening agent containing anhydride or epoxy group, and the filler refers to barium sulfate powder or calcium carbonate powder. The high-toughness matte modified polylactic acid material for 3D printing is excellent in toughness, remarkable inaging resistance and great in matte surface effect.

Description

technical field [0001] The invention relates to a high-tough matte modified polylactic acid material for 3D printing and a preparation method thereof, belonging to the technical field of materials for 3D printing. Background technique [0002] 3D printing technology is a technology that 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 to construct objects by layer-by-layer printing. It is used in civil engineering, jewelry, footwear, automotive, aerospace, medical and other fields. [0003] Polymer materials have good thermal fluidity, rapid cooling cohesion, and high mechanical strength, and have been rapidly applied and developed in the field of 3D printing manufacturing, especially polylactic acid (PLA), as a green, biodegradable new The material has a particularly excellent 3D printing effect - high adhesion between layers, not easy to warp and deform, and th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L51/04C08L51/00C08L55/02C08L23/08C08L51/06C08K9/04C08K3/26C08K3/36C08K3/30B33Y70/10
CPCB33Y70/00C08K2003/265C08K2003/3045C08L67/04C08L2205/03C08L2207/53C08L51/04C08L55/02C08K9/04C08K3/26C08K3/36C08L23/0884C08K3/30C08L51/003C08L51/06
Inventor 李振
Owner 诺思贝瑞新材料科技(苏州)有限公司
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