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Material for powder 3D printing test model and preparation method thereof

A test model, 3D printing technology, applied in the direction of additive processing, etc., can solve the problem of unable to make a three-dimensional complex geological structure model, and achieve the effect of high printing accuracy and apparent accuracy, and good molding strength

Active Publication Date: 2021-05-07
HEBEI UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the production of physical models still cannot produce a three-dimensional complex geological structure model based on rock-like materials. How to accurately and finely simulate the structural characteristics of rock mass is an unsolved problem

Method used

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  • Material for powder 3D printing test model and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Dry and ball mill 25% of the quartz sand at a speed of 1100r for 20 minutes, pass through a 200-mesh sieve for later use; ball mill dead-burned magnesia and ammonium dihydrogen phosphate at a speed of 1100r, and mill for 20 minutes. Pass through a 150-mesh sieve for later use;

[0052] Mix the dead-burned MgO passed through a 150-mesh sieve with ammonium dihydrogen phosphate according to the mass ratio of 59:41 and add it to the mixer, and stir for 3 minutes; then, add 25% quartz sand and 5% fly ash and 5% % of 200 mesh polyvinyl alcohol powder, and continue to stir for 2 minutes; finally, add 0.1% of carbon nanotubes, and stir for 3 minutes to obtain the powder material for the powder 3D printing test model.

[0053] Liquid material: Add the weighed 1,2 propylene glycol and glycerin into distilled water and vibrate with 50Hz ultrasonic wave for 3min;

[0054] Add the powder material for the powder 3D printing test model prepared above into the powder feeding bin of th...

Embodiment 2

[0056] Each part of this embodiment is the same as that of Embodiment 1, except that the addition of fly ash is 10% (wt).

Embodiment 3

[0058] The parts of this embodiment are the same as those of Embodiment 1, except that the amount of carbon nanotubes added is 0.3% (wt).

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Abstract

The invention provides a material for a powder 3D printing test model and a preparation method of the material. The material is prepared from the following materials: magnesium phosphate cement, a spreadability adjusting component, a cohesiveness adjusting component and a reinforcing component. The material has the characteristics of good forming strength, high setting speed, high early strength, high printing precision and the like, can greatly improve the problem that the conveying, spraying and building processes of powder and liquid materials in the traditional Portland cement material and powder 3D printing are difficult to adapt, and can be used for manufacturing a cement space bracket structure with good mechanical properties and printing precision; the material meets the requirements of replicability and controllability of a physical test model with a complex structure, effectively combines various mechanism researches with test verification methods, further verifies the reliability of a mechanism theory, and has a better application prospect.

Description

technical field [0001] The invention relates to a material for a powder 3D printing test model and a preparation method thereof, belonging to the field of new building materials. Specifically design a new building material for powder 3D printing test models with high strength, high stability, simple and fast process, and mechanized operation, which can flexibly print out reproducible and controllable physical test models. Compared with ordinary energy-consuming materials and traditional finite element simulation calculation methods, this method has the advantages of high strength, high toughness, intelligence, high precision, high stability, flexible control of test model parameters and repeatable test verification, etc. It meets the requirements of the intelligent market for experimental research on similar mechanisms, and has broad application prospects. Background technique [0002] 3D printing technology, also known as "additive manufacturing" technology, was born in th...

Claims

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Application Information

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IPC IPC(8): C04B26/04B33Y70/10B33Y10/00
CPCC04B26/04B33Y70/10B33Y10/00C04B2201/50C04B2111/00181C04B2111/00991C04B22/16C04B14/06C04B18/08C04B18/146C04B14/026
Inventor 刘雄飞马国伟
Owner HEBEI UNIV OF TECH
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