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Composite resin material for 3D printing as well as preparation method and application thereof

A composite resin and 3D printing technology, applied in the direction of additive processing, etc., can solve the problem of low mixing degree of resin materials, achieve high heat resistance temperature, simple preparation method, and good tensile properties

Active Publication Date: 2019-11-22
XIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the polylactic acid / polyurethane elastomer composite resin material is mainly prepared by the melt extrusion method, that is, the polylactic acid and polyurethane elastomer are melted by heating and then blended on the physical level, but there are two kinds of resins in the preparation process Problems with low material mixing

Method used

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  • Composite resin material for 3D printing as well as preparation method and application thereof
  • Composite resin material for 3D printing as well as preparation method and application thereof
  • Composite resin material for 3D printing as well as preparation method and application thereof

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preparation example Construction

[0050] In a preferred embodiment of the present invention, the preparation method of the above-mentioned composite resin material includes the following steps: mixing polylactic acid, polyurethane elastomer and lysozyme / carbon nanotube solution added as required in an organic solvent, removing the solvent, The composite resin material can be obtained.

[0051] In a preferred embodiment of the present invention, the preparation method of above-mentioned composite resin material comprises the following steps:

[0052] 1) Dissolution and compounding: Add 25g of polylactic acid into 150g of N,N dimethylformamide (DMF) solvent, stir for 40min-60min in a water bath at 80-90°C and a speed of 400 rpm, and the polylactic acid is completely dissolved , continue to add 1.25 ~ 5g polyurethane elastomer and stir for 10min-20min, at this time the two materials have been completely mixed to obtain a composite solution;

[0053] 2) Distillation under reduced pressure: Distill the compound so...

Embodiment 1

[0068] 1) Dissolving and compounding: Add 25g of polylactic acid into 150g of N,N dimethylformamide solvent, stir for 40min in a water bath at 85°C and a speed of 400 rpm, add 5g of polyurethane elastomer and continue stirring for 10min to obtain compound liquid;

[0069] 2) Distillation under reduced pressure: Distill the compound liquid in step 1) at a vacuum degree of 20kPa and a temperature of 60°C for 4 hours to remove the solvent. At this time, the compound liquid has become viscous to obtain a polylactic acid / polyurethane elastomer compound Crude resin product;

[0070] 3) Drying: move the crude product of step 2) into a mold, put the mold into a vacuum drying oven, and dry for 24 hours at a temperature of 50° C. and a vacuum of 80 kPa to obtain the composite resin material of this embodiment.

Embodiment 2

[0072] 1) Dissolving and compounding: Add 25g of polylactic acid into 150g of N,N dimethylformamide solvent, stir for 50min in a water bath at 85°C and a speed of 400 rpm, add 2.5g of polyurethane elastomer and continue stirring for 11min, get compound liquid;

[0073] 2) Distillation under reduced pressure: Distill the compound liquid in step 1) at a vacuum degree of 30kPa and a temperature of 60°C for 4 hours to remove the solvent. At this time, the compound liquid has become viscous to obtain a polylactic acid / polyurethane elastomer compound Crude resin product;

[0074] 3) Drying: move the crude product of step 2) into a mold, put the mold into a vacuum drying oven, and dry for 24 hours at a temperature of 50° C. and a vacuum of 70 kPa to obtain the composite resin material of this embodiment.

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Abstract

The invention relates to a composite resin material for 3D printing. The composite resin material is prepared from the following raw materials: polylactic acid, a polyurethane elastomer and an organicsolvent, wherein the mass ratio of the polylactic acid to the polyurethane elastomer is (5-20):1. The invention also provides a preparation method of the composite resin material, which comprises thefollowing steps: mixing the polylactic acid, the polyurethane and a lysozyme / carbon nanotube solution added as required in an organic solvent, and removing the solvent to obtain the composite resin material. The composite resin material disclosed by the invention has the advantages of high heat-resistant temperature, good tensile property and the like, the preparation method is simple, the raw materials are wide in source and are biodegradable materials, and the composite resin material is green and environment-friendly.

Description

technical field [0001] The invention belongs to the field of synthesis of organic polymer materials, in particular to a composite resin material for 3D printing and its preparation method and application. Background technique [0002] 3D printing technology appeared in the mid-1990s and is actually the latest rapid prototyping device utilizing technologies such as light curing and paper lamination. Its working principle is basically the same as that of ordinary printing. The printer is filled with "printing materials" such as liquid or powder. After connecting to the computer, the "printing materials" are superimposed layer by layer through computer control, and finally the blueprint on the computer is turned into a real object. [0003] In 1986, Charles Hull developed the first commercial 3D printing machine. In 1993, the Massachusetts Institute of Technology obtained a patent for 3D printing technology. In 1995, ZCorp of the United States obtained the sole authorization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08L75/04C08K7/24B33Y70/00
CPCB33Y70/00C08K2201/011C08L67/04C08L2201/06C08L2201/08C08L75/04C08K3/041
Inventor 周星李亚光方长青王咚张超群
Owner XIAN UNIV OF TECH
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