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Preparation method of magnesium oxyferric phosphate composite cement-based 3D printing material

A composite cement and 3D printing technology, applied in the field of 3D printing materials, can solve the problems of limiting the application range of 3D printing materials, the fundamental properties of cohesiveness or setting time have not been improved, and achieve the promotion of hydration, long service life, The effect of rich sources of raw materials

Active Publication Date: 2022-05-24
辽宁科大中驰镁建材科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] To sum up, although the above patents have all improved the mechanical properties such as hardness of the material, most of the patent achievements on cement slurry as raw material are added with admixtures or other materials Materials with very good performance as a starting point, the fundamental properties of cohesion or setting time are not improved, thus limiting the range of applications for 3D printing materials

Method used

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  • Preparation method of magnesium oxyferric phosphate composite cement-based 3D printing material

Examples

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Effect test

Embodiment 1

[0034] In Example 1, the composite cement base was 15 grams, the fine aggregate was 6 grams, and the admixture was 79 grams.

[0035] The formula composition of the composite cement base is: 1800g of light-burned magnesium oxide powder, 200g of magnesium sulfate heptahydrate, 3600g of water, and 180g of iron phosphate. The formulation of the admixture is as follows: 25g of polycarboxylate water reducer, 23g of thickener, 17g of thixotropic agent, and 35g of reinforcing material.

[0036] 3D printing material raw material composition: 2%~80% composite cement base, 1%~8% fine aggregate, and the balance is an admixture composition for iron phosphate magnesium oxysulfide composite cement base; admixture composition : Water reducing agent accounts for 6%~30%, thickener accounts for 5%~25%, thixotropic agent accounts for 3%~25%, and reinforcing material accounts for 20%~45%.

[0037] The preparation method of the 3D printing material in Example 1 includes the following steps:

[003...

Embodiment 2

[0044] In Example 2, the composite cement base was 25 grams, the fine aggregate was 5 grams, and the admixture was 70 grams.

[0045] The formula composition of the composite cement base is the same as that of Example 1. The formula composition of the admixture is: 15g of polycarboxylate water reducer, 23g of thickener, 20g of thixotropic agent, and 42g of reinforcing material.

[0046] The preparation method of Example 2 is the same as that of Example 1. The strength is 41.2MPa, which is 17.7% higher than ordinary magnesium oxysulfate cement

Embodiment 3

[0048] In Example 3, the composite cement base was 35 grams, the fine aggregate was 6 grams, and the admixture was 59 grams.

[0049] The formula composition of the composite cement base is the same as that of Example 1. The formula composition of the admixture is: 25g of polycarboxylate water reducer, 22g of thickener, 25g of thixotropic agent, and 28g of reinforcing material.

[0050] The preparation method of Example 3 is the same as that of Example 1. The strength is 45.2MPa, which is 30.0% higher than ordinary magnesium oxysulfate cement

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Abstract

The invention relates to the field of 3D printing materials, in particular to a preparation method of a composite magnesium oxysulfate iron phosphate based 3D printing material which comprises the following raw materials in percentage by weight: 2%-80% of a composite cement base, 1%-8% of fine aggregate and the balance of an additive composition for a magnesium oxysulfate iron phosphate composite cement base, the additive composition comprises the following components in percentage by weight: 6%-25% of a water reducing agent, 5%-20% of a thickening agent, 3%-8% of a thixotropic agent and 15%-50% of a reinforcing material. The method has the advantages that the compactness and the strength of a matrix are improved, and the material strength and the setting time of the matrix are superior to those of the prior art. The magnesite tailing light calcined magnesia powder is rich in raw material source and simple in production process, belongs to a green and environment-friendly building material, can be applied to more and more fields due to the excellent performance, realizes reutilization of magnesite tailing waste resources and wastes, and opens up a new application of the magnesite tailing light calcined magnesia powder.

Description

technical field [0001] The invention relates to the field of 3D printing materials, in particular to a preparation method of a composite iron phosphate magnesium oxysulfide-based 3D printing material. Background technique [0002] In recent years, magnesia cement has developed rapidly, mainly because magnesia cement has excellent properties such as high early strength, low mass, good fire resistance, good impact resistance and thermal shock resistance, and good combination with organic materials. , so it has great potential advantages in interior decoration, energy saving, environmental protection, etc., so it is a very environmentally friendly building material. Among magnesia cements, magnesium oxysulfide cement integrates all the advantages of magnesia cement. At the same time, it also has the characteristics of fast hardening, early strength, high cohesion, and good water resistance, which further broadens the application of magnesia cement. market. [0003] At present...

Claims

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Application Information

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IPC IPC(8): C04B28/30B33Y70/10
CPCC04B28/30B33Y70/10C04B2111/00181C04B2201/32C04B14/06C04B14/102C04B14/4643C04B16/0641C04B24/383C04B2103/302Y02W30/91
Inventor 关岩马皓毕万利陈啸洋孙美硕
Owner 辽宁科大中驰镁建材科技有限公司
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