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Polylactic acid material for fused deposition molding and preparation method of polylactic acid material

A fused deposition modeling and polylactic acid material technology, which is applied in the field of 3D printing technology and plastic processing to achieve the effect of promoting dispersion, realizing large-scale popularization and production, and broad market prospects.

Inactive Publication Date: 2016-02-24
HEILONGJIANG XINDA ENTERPRISE GRP
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  • Abstract
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Problems solved by technology

[0007] The purpose of the present invention is to provide a polylactic acid for fused deposition modeling, to overcome the defects of the existing polylactic acid material for fused deposition molding, the addition of polylactic acid-polyethylene glycol copolymer can improve the hydrophobicity of the polylactic acid material, promote The dispersion of inorganic fillers in PLA can greatly improve the mechanical properties of polylactic acid materials

Method used

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  • Polylactic acid material for fused deposition molding and preparation method of polylactic acid material
  • Polylactic acid material for fused deposition molding and preparation method of polylactic acid material

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preparation example Construction

[0032] The preparation method of polylactic acid material for fused deposition modeling comprises the following steps:

[0033] (1) Processing of raw materials: prepare various raw materials, and dry polylactic acid, polylactic acid-polyethylene glycol copolymer and inorganic fillers;

[0034] (2) Mixing of reagents and raw materials: first put polylactic acid, polylactic acid-polyethylene glycol copolymer and inorganic filler into the mixer, and then add lubricant after stirring for 1 minute, and then add plasticizer after stirring for 3 minutes, and stir until The surface of the particles is evenly liquid and bright, that is, they are stirred evenly. After the mixing is completed, a stabilizer and an anti-hydrolysis agent are added for subsequent mixing, and the mixing is continued for 2 minutes, and finally the mixed raw material is obtained.

[0035] (3) Heated extrusion: Add the mixed raw materials into the twin-screw extruder, and keep the feeding speed uniform and smoot...

Embodiment 4

[0048] A polylactic acid material for fused deposition molding, which is made of the following raw materials: 100 g of polylactic acid with a weight average molecular weight of 50,000, 1 g of inorganic filler (nano-silica), and polylactic acid-poly Ethylene glycol copolymer (the mass ratio of polylactic acid to polyethylene glycol is 10:1) 2g, lubricant (polyethylene wax) 0.9g, plasticizer (dioctyl phthalate) 1.1g, stabilizer (antioxidant 1010, tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester) 0.2 g, anti-hydrolysis agent (carbodiimide compound) 0.1 g.

[0049] The preparation method of the polylactic acid material for fused deposition molding in this embodiment, the steps are as follows:

[0050] (1) Processing of raw materials: prepare various raw materials, and dry polylactic acid, polylactic acid-polyethylene glycol copolymer and inorganic fillers;

[0051] (2) Mixing of reagents and raw materials: first put polylactic acid, polylactic acid...

Embodiment 5

[0055] A polylactic acid material for fused deposition molding, which is made of the following raw materials: 100 g of polylactic acid with a weight average molecular weight of 100,000, 10 g of inorganic filler (hectorite), and polylactic acid-polyethylene with a weight average molecular weight of 150,000. Glycol copolymer (the mass ratio of polylactic acid and polyethylene glycol is 7:3) 18g, lubricant (oleic acid amide) 1.4g, plasticizer (epoxidized soybean oil) 0.9g, stabilizer (antioxidant 168, tris[2.4-di-tert-butylphenyl] phosphite) 0.1g, anti-hydrolysis agent (polyurethane) 0.2g.

[0056] The preparation method of the polylactic acid material for fused deposition molding in this embodiment is the same as that in Embodiment 4.

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Abstract

The invention discloses a polylactic acid material for fused deposition molding and a preparation method of the polylactic acid material. The polylactic acid material for fused deposition molding is prepared from the following raw materials and auxiliaries: 100 parts of polylactic acid, 1 to 30 parts of inorganic filler, 2 to 30 parts of polylactic acid-polyethylene glycol copolymer, 0.9 to 3 parts of lubricating agent, 0.9 to 3 parts of plasticizer, 0.1 to 0.5 parts of stabilizer and 0.1 to 2 parts of hydrolysis resistant agent. According to the polylactic acid material, due to the addition of the polylactic acid-polyethylene glycol copolymer, the inorganic filler is dispersed more uniformly in the polylactic acid, the mechanical property of a fused deposition molding workpiece is promoted, and the practicability is higher. In addition, the invention also provides the preparation method of the polylactic acid material, the preparation method is easy to operate, and low in requirements on technological conditions and production equipment without adding other equipment to promote the dispersion of the inorganic filler; large-scale promotion and production can be realized, the market prospect is wide and the market benefit is extremely excellent.

Description

technical field [0001] The invention relates to a polylactic acid material for fused deposition molding and a preparation method thereof, and relates to the fields of 3D printing technology and plastic processing. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is based on digital model files, using powdered metal or plastic and other bondable materials to construct objects by layer-by-layer printing. 3D printing technology is becoming more and more competitive in today's manufacturing industry, involving information technology, material science, precision machinery and other aspects, so it is called "manufacturing technology with industrial revolution significance". 3D printing technology includes fused deposition modeling, selective laser sintering, stereolithography and other technologies. [0003] Fused Deposition Molding (Fused Deposition Molding, FDM) is a method of processing thermoplastic filaments through solid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L71/08C08L23/06C08K13/02C08K13/04C08K7/08C08K3/34C08K3/36C08K5/12C08K5/134C08K5/29
CPCC08L67/04C08L2205/025C08L2205/03C08L2205/035C08L71/00C08L23/06C08K13/02C08K3/346C08K5/12C08K5/1345C08K5/29C08K3/36C08L91/00C08L79/04C08K3/34C08K5/20C08K5/526C08L79/02C08K3/26C08K5/053C08L75/04C08K13/04C08K7/08
Inventor 王娜于翔王延伟田银彩卢晓龙付浩男屈少一
Owner HEILONGJIANG XINDA ENTERPRISE GRP
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