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A kind of powder 3D printing test model material and preparation method thereof

A test model, 3D printing technology, applied in the direction of additive processing, etc., can solve the problem that the three-dimensional complex geological structure model cannot be produced, and achieve the effect of high printing accuracy and apparent accuracy, and good forming strength

Active Publication Date: 2022-07-29
HEBEI UNIV OF TECH
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  • Summary
  • 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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  • A kind of powder 3D printing test model material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] The 25% quartz sand was dried and ball-milled, the ball-milling speed was 1100r, the ball-milling time was 20min, and passed through a 200-mesh sieve for use; the dead-burned magnesium oxide and ammonium dihydrogen phosphate were ball-milled, the ball-milling speed was 1100r, and the ball-milling time was 20min, Pass through a 150-mesh sieve for use;

[0052] After passing through a 150-mesh sieve, the dead-burned MgO and ammonium dihydrogen phosphate were mixed and added to the mixer according to the mass ratio of 59:41, and stirred for 3 minutes; then, 25% quartz sand, 5% fly ash and 5% were added. % 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 ultrasonically at 50Hz frequency for 3min;

[0054] The powder ...

Embodiment 2

[0056] Each part of this example is the same as that of Example 1, the difference is that the amount of fly ash added is 10% (wt).

Embodiment 3

[0058] Each part of this example is the same as that of Example 1, the difference is that the amount of carbon nanotubes added is 0.3% (wt).

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Abstract

The invention provides a powder 3D printing test model material and a preparation method thereof. The material is made of 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, fast setting speed, high early strength and high printing accuracy, which can greatly improve the traditional Portland cement materials and powder 3D printing. Therefore, it is possible to manufacture a cement space support structure with good mechanical properties and printing accuracy, which can meet the requirements of replicable and controllable physical test models of complex structures, and effectively combine various mechanism studies with experimental verification methods to further verify the mechanism theory. Reliability and good application prospects.

Description

technical field [0001] The invention relates to a powder 3D printing test model material and a preparation method thereof, belonging to the field of novel building materials. Specifically design a new building material for powder 3D printing test model with high strength, high stability, simple and fast process, and mechanized operation, which can flexibly print a replicable and controllable physical test model. 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 accuracy, high stability, flexible control of test model parameters and repeatable test verification. The intelligent market requirements of the mechanism-like experimental research have broad application prospects. Background technique [0002] 3D printing technology, also known as "additive manufacturing" technology, was born in the mid-to-late 1980s. It is an opposite t...

Claims

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Application Information

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