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A kind of gypsum-based 3D printing material and preparation method thereof

A 3D printing and 3D printer technology, applied in the field of 3D printing, can solve the problems of high production cost, environmental pollution, low molding strength, etc., and achieve the effect of maintenance-free, production cost reduction, and stable flow.

Active Publication Date: 2022-04-15
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present invention aims to propose a gypsum-based 3D printing material to solve the problems of existing gypsum-based 3D printing materials such as low molding strength, high production cost, and easy pollution to the environment

Method used

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  • A kind of gypsum-based 3D printing material and preparation method thereof
  • A kind of gypsum-based 3D printing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A kind of gypsum-based 3D printing material, by weight, comprises the following components:

[0034] Hemihydrate gypsum (plaster of paris): 100 parts, protein retarder: 0.16 parts, calcium hydroxide: 0.05 parts, water-reducing polycarboxylate superplasticizer (KH-5 polymer produced by Wuhan Huaxuan High-tech Co., Ltd. Carboxylic acid superplasticizer mother liquor): 0.8 parts, hydroxypropyl methylcellulose: 1.6 parts, attapulgite: 1 part

[0035] Such as figure 1 , figure 2 As shown, among them, figure 2 The dotted line in the middle is the flow route of the powder, the arrow in the solid line is the flow route of the slurry, and the blank arrow is the flow route of the slurry. The above-mentioned gypsum-based 3D printing material is specifically prepared by the following method:

[0036] 1) Design the 3D model information of the object to be printed in the computer, and convert the 3D model information into processing codes and then input it to the 3D printer;

...

Embodiment 2

[0043] A kind of gypsum-based 3D printing material, by weight, comprises the following components:

[0044] Hemihydrate gypsum (plaster of paris): 100 parts, protein retarder: 0.16 part, calcium hydroxide: 0.04 part, polycarboxylate superplasticizer powder (PCE-F10 polycarboxylate produced by Shanghai Chemical Building Materials Additive Co., Ltd. powder): 1 part, hydroxypropyl methylcellulose: 1.2 parts, hydrophilic fumed nano-silica: 1.6 parts

[0045] Such as figure 1 , figure 2 As shown, among them, figure 2 The dotted line in the middle is the flow route of the powder, the arrow in the solid line is the flow route of the slurry, and the blank arrow is the flow route of the slurry. The above-mentioned gypsum-based 3D printing material is specifically prepared by the following method:

[0046] 1) Design the 3D model information of the object to be printed in the computer, and convert the 3D model information into processing codes and then input it to the 3D printer;

...

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Abstract

The present invention provides a gypsum-based 3D printing material and a preparation method thereof. The gypsum-based 3D printing material comprises the following components in parts by weight: gypsum: 100 parts, retarding component: 0.01-1 part, calcium hydroxide : 0‑0.1 part, water reducer: 0‑1 part, thixotropic thickening modifier: 0.1‑4 part. The gypsum-based 3D printing material of the present invention uses admixtures to modify the gypsum, so that it has a longer retarding time, higher yield strength, and better stacking performance, and the present invention avoids the existing gypsum-based 3D printing The use of cement in the material greatly reduces the production cost and is environmentally friendly.

Description

technical field [0001] The invention relates to the technical field of 3D printing, in particular to a gypsum-based 3D printing material and a preparation method thereof. Background technique [0002] The basic principles of extrusion 3D printing are simple physics techniques. Due to the printing method of extruding printing materials, a nozzle can be used as a forming part, and the material can be simply extruded and deposited, and a three-dimensional solid object can be created layer by layer. The material extrusion power can be compressed air as the power source or mechanical screw drive. The main factors that determine the success of extrusion 3D printing are: the material can be extruded and has fluidity, and the material has shear thinning characteristics in rheological properties; the material can self-cure after extrusion to support the weight on it. [0003] At present, the 3D printing of gypsum-based materials mainly uses cement as a curing agent, and the adhesiv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14B28B1/00B33Y10/00B33Y70/10
CPCC04B28/14C04B28/142C04B28/143C04B28/145B28B1/001B33Y10/00B33Y70/00C04B2111/00181C04B24/14C04B22/064C04B2103/302C04B24/383C04B14/102C04B14/066
Inventor 黄健黄旭蔡培根杨正才蹇守卫谭洪波李相国马保国
Owner WUHAN UNIV OF TECH
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