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Quantum dot luminous compound for 3D (Three Dimensional) printing and preparation method thereof

A technology of quantum dot luminescence and 3D printing, which is applied in the direction of additive processing, etc., can solve problems such as changes in the emission spectrum of phosphors, limitations in the development of phosphors, and severe light scattering effects, and achieve good comprehensive printing performance, increased mechanical properties, The effect of high product quality

Inactive Publication Date: 2019-01-25
LULIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, polymer colloids doped with phosphors have the problems of agglomeration of phosphors, severe light scattering effect on the surface of phosphors and polymer colloids, and changes in the emission spectrum of phosphors. The development of phosphors in the field of 3D printing is limited.

Method used

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  • Quantum dot luminous compound for 3D (Three Dimensional) printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A quantum dot luminescent compound for 3D printing, which consists of the following raw materials in parts by weight: 100 parts of polylactic acid, 0.2 parts of ADR 4370S, 5 parts of diethyl adipate monobutyl, 20 parts of nano-silica, 20 parts 1 part of graphene quantum dots, 1 part of nano calcium carbonate, 1 part of talcum powder.

[0028] The preparation method of the quantum dot luminescent compound for 3D printing is as follows: firstly, 20 parts of nano-silica and 20 parts of graphene quantum dots are mixed, and excess ethanol is added to the mixture, and then the mixed solution is dried at 60° C. for 8 hours, Obtain dried mixed powder;

[0029] After drying 100 parts of polylactic acid at 60°C for 4 hours, add polylactic acid and 0.2 parts of ADR 4370S into a high-speed mixer, stir at 10°C for 0.5h to fully mix at a speed of 200r / min, and then use a twin-screw mixer to extrude For granulation, the extrusion temperature is 175°C, the die head temperature is 160°...

Embodiment 2

[0032] A quantum dot light-emitting compound for 3D printing, which consists of the following raw materials in parts by weight: 100 parts of polylactic acid, 0.4 parts of ADR 4370S, 5 parts of diethyl adipate, 20 parts of nano-silica, 20 parts 1 part of graphene quantum dots, 1 part of nano calcium carbonate, 1 part of talcum powder.

[0033] The preparation method of the quantum dot luminescent compound for 3D printing is as follows: firstly, 20 parts of nano-silica and 20 parts of graphene quantum dots are mixed, and excess ethanol is added to the mixture, and then the mixed solution is dried at 70° C. for 9 hours, Obtain dried mixed powder;

[0034] After drying 100 parts of polylactic acid at 60°C for 4 hours, add polylactic acid and 0.4 parts of ADR 4370S into a high-speed mixer, stir at 20°C for 1 hour to fully mix at a speed of 300r / min, and then use a twin-screw mixer to extrude For granulation, the extrusion temperature is 180°C, the die head temperature is 180°C, th...

Embodiment 3

[0037] A quantum dot luminescent compound for 3D printing, which consists of the following raw materials in parts by weight: 100 parts of polylactic acid, 0.6 parts of ADR 4370S, 5 parts of diethyl monobutyl adipate, 20 parts of nano-silica, 20 parts 1 part of graphene quantum dots, 1 part of nano calcium carbonate, 1 part of talcum powder.

[0038] The preparation method of the quantum dot luminescent compound for 3D printing is as follows: firstly, 20 parts of nano-silica and 20 parts of graphene quantum dots are mixed, and excess ethanol is added to the mixture, and then the mixed solution is dried at 80° C. for 10 h, Obtain dried mixed powder;

[0039] After drying 100 parts of polylactic acid at 80°C for 5 hours, add polylactic acid and 0.6 parts of ADR 4370S into a high-speed mixer, stir at 30°C for 2 hours to fully mix at a speed of 300r / min, and then use a twin-screw mixer to extrude For granulation, the extrusion temperature is 185°C, the die head temperature is 180°...

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Abstract

The invention provides a quantum dot luminous compound for 3D (Three Dimensional) printing. The quantum dot luminous compound is prepared from the following raw materials in parts by weight: 100 partsof polylactic acid, 0.2 to 0.5 part of a chain extender, 5 to 17 parts of a plasticizer, 20 to 60 parts of an organic matter, 20 to 60 parts of graphene quantum dots, 1 to 5 parts of a reinforcing agent and 1 to 5 parts of a lubricant, wherein the organic matter is nano silicon dioxide or nano titanium dioxide. According to the quantum dot luminous compound, the polylactic acid is modified through the chain extender and the performance of the polylactic acid is enhanced; then the graphene quantum dots are mixed with the organic matter, so that the luminous intensity of the quantum dot luminous compound is enhanced; finally, mixed powder of the graphene quantum dots and the organic matter is mixed with the modified polylactic acid, the plasticizer, the reinforcing agent and the lubricant;the three-dimensional size of the graphene quantum dots is commonly less than 10 nm, scattering is relatively small and agglomeration and sedimentation are not prone to occur; the quantum dot luminouscompound has excellent performance and can be used for printing luminous bodies with different shapes; the quantum dot luminous compound is matched with a laser source and the luminous bodies with different shapes and functions can be manufactured, so that the quantum dot luminous compound has good application prospects.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a quantum dot light-emitting composite for 3D printing and a preparation method thereof. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is actually an emerging technology in the field of rapid prototyping. It is based on digital model files and uses bondable materials such as powdered metal or plastic. A technique for constructing objects in a manner. The basic principle is additive manufacturing, the technique of adding material layer by layer to generate a three-dimensional solid. At present, 3D printing technology is mainly used in product prototyping, mold manufacturing, art creation, jewelry making and other fields, replacing these traditional fine processing techniques. In addition, 3D printing technology is gradually applied in fields such as medicine, bioengineering, architecture, clothing, aviation, et...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/04C08K13/04C08K7/24C08K5/11C08K3/04C08K3/36C08K3/22C08K3/26B33Y70/00
CPCB33Y70/00C08K3/22C08K3/26C08K3/36C08K5/11C08K13/04C08K2003/2241C08K2003/265C08K2201/011C08L2201/08C08K3/041C08K3/042C08L67/04
Inventor 冯晓婷
Owner LULIANG UNIV
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