A kind of clay material for laser sintering 3D printing and preparation method thereof

A 3D printing and laser sintering technology, which is applied to clay products, applications, household appliances, etc., can solve problems such as unfavorable bonding and extrusion, poor dimensional accuracy, and poor mechanical properties of clay. The method is simple and reliable, and the dimensional accuracy is good. , good fluidity effect

Active Publication Date: 2020-09-29
许恩明
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using 3D printing technology to form ceramic products, the 3D printing materials used are all ceramic powders fired from clay, and then ceramic products are obtained by direct or indirect methods, but the preparation methods of ceramic powders are complex and costly , which seriously hinders the development and application of 3D printing technology in ceramic molding
Clay itself has excellent viscosity and plasticity, and can be directly formed into a ceramic green body, and then sintered to obtain ceramics. However, due to defects in technology and technology, the molded ceramic green body has shortcomings such as simple structure and poor dimensional accuracy, which severely limits the use of clay. For the application of clay and its products in daily life, if 3D printing technology is used for clay and then molded to obtain ceramics, the above-mentioned defects can be completely improved and solved. Therefore, the application of clay and its products in daily life Significant and market value
[0004] Unmodified clay materials are not suitable for 3D printing. High plasticity clay has poor mechanical properties, which is not conducive to support and modeling during the forming process. Clay with good mechanical properties has poor cohesiveness and plasticity, which is not conducive to 3D printing. Bonding and extrusion during the molding process, therefore, it is necessary to modify the clay to obtain a clay material suitable for laser sintering 3D printing technology, which is a prerequisite for clay to be used in 3D printing technology

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Add 50 parts by weight of kaolin with a fineness of 2000 mesh, 150 parts by weight of silica sol solution, and 5 parts by weight of water glass into a planetary ball mill for mixing, dispersing, and grinding for 2 hours to obtain a mixed solution A;

[0027] 2. Add 10 parts by weight of alkylammonium sulfate to the mixture A obtained in step 1, and use ultrasonic waves to vibrate and high-speed stirring at a speed of 500r / min to emulsify for 20-30min to obtain a mixed solution B;

[0028] 3. Spray-dry the mixed solution B obtained in step 2 with a spray dryer to obtain a spherical powdered clay material for laser sintering 3D printing molding technology.

Embodiment 2

[0030] 1. Add 65 parts by weight of montmorillonite with a fineness of 800 mesh, 200 parts by weight of aluminum sol solution, and 15 parts by weight of sodium tripolyphosphate into a planetary ball mill for mixing, dispersing, and grinding for 1 hour to obtain mixed solution A;

[0031] 2. Add 5 parts by weight of sodium alkyl phosphate to the mixture A obtained in step 1, and use ultrasonic vibration and high-speed stirring at a speed of 700r / min to emulsify for 20 minutes to obtain a mixed solution B;

[0032] 3. Spray-dry the mixed solution B obtained in step 2 with a spray dryer to obtain a spherical powdered clay material for laser sintering 3D printing molding technology.

Embodiment 3

[0034] 1. Add 60 parts by weight of kaolin with a fineness of 1200 mesh, 200 parts by weight of silica sol solution, and 10 parts by weight of sodium hexametaphosphate into a planetary ball mill for mixing, dispersing, and grinding for 2 hours to obtain a mixed solution A;

[0035] 2. Add 8 parts by weight of fatty alcohol sodium sulfate to the mixture A obtained in step 1, and use ultrasonic waves to vibrate and high-speed stirring at a speed of 600r / min to emulsify for 30 minutes to obtain a mixed solution B;

[0036] 3. Spray-dry the mixed solution B obtained in step 2 with a spray dryer to obtain a spherical powdered clay material for laser sintering 3D printing molding technology.

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Abstract

The invention discloses a clay material for laser sintering 3D printing and a preparation method of the clay material. In order to obtain the clay material applicable to a laser sintering 3D printing forming technique, clay is modified and adsorbed through an inorganic sol solution, and the spherical powdery clay material is obtained through emulsification coating. The clay material has the advantages of good fluidity, good mechanical performance and high precision, is applicable to the laser sintering 3D printing forming technique, promotes popularization and application of the 3D printing forming technique and has wide market prospect.

Description

technical field [0001] The invention relates to a 3D printing material and a preparation method thereof, in particular to a clay material for laser sintering 3D printing and a preparation method thereof. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is 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 to print layer by layer. Techniques for constructing objects. With the development and application of 3D printing technology, the development of materials determines whether 3D printing can be more widely used, and materials have become one of the key factors limiting the future direction of 3D printing technology. At present, 3D printing materials mainly include engineering plastics, photosensitive resins, rubber materials, metal materials, and ceramic materials. The field of printing has been applied. [0003] As ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/13
CPCC04B33/1305C04B33/131C04B2235/3217C04B2235/3418C04B2235/3427C04B2235/447C04B2235/449
Inventor 陈庆曾军堂叶任海
Owner 许恩明
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