Composite magnesium oxysulfate cementing material used for 3D printing as well as preparation method and application of composite magnesium oxysulfate cementing material

A 3D printing, magnesium oxysulfide glue technology, applied in additive processing and other directions, can solve the problem of unsuitable magnesium oxysulfide cementitious materials, achieve strong resistance to various soluble salt erosion, increase added value, cohesion good effect

Active Publication Date: 2019-10-18
辽宁科大中驰镁建材科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is to provide a composite magnesium oxysulfate gelling material for 3D printing, to solve the problem that the traditional magnesium oxysulfide gelling material in the prior art is not suitable for 3D printing technology application, through 3D Printing technology enables magnesium oxysulfate cement-based composite materials to produce some complex and delicate products with high added value, so as to explore the application of magnesium oxysulfate cement-based composite materials in the construction industry through 3D printing technology in the future;

Method used

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  • Composite magnesium oxysulfate cementing material used for 3D printing as well as preparation method and application of composite magnesium oxysulfate cementing material

Examples

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Embodiment 1

[0047] The composite magnesium oxysulfide cementitious material for 3D printing in this embodiment includes the following components by mass percentage: light-burned magnesium oxide 30wt%, magnesium sulfate heptahydrate 20wt%, water 20wt%, silica fume 1wt%, naphthalene-based reduced Water agent 1wt%, carboxymethyl cellulose 6wt%, sodium sulfate 3wt%, silicone hydrophobic powder 3wt%, sodium lignosulfonate 3wt%, tributyl phosphate 3wt%; fine aggregate (talc powder: dolomite powder = 7: 3) 10wt%.

[0048] The preparation method of the composite magnesium oxysulfide cementitious material for 3D printing in this embodiment includes the following steps:

[0049] (1) Dissolve selected amount of the magnesium sulfate heptahydrate in water and configure it as MgSO 4 Solution, stand for 24h, standby;

[0050] (2) The MgSO 4 The solution, the naphthalene-based water reducing agent, carboxymethyl cellulose, sodium sulfate, organic silicon water-repellent powder, sodium lignosulfonate and tribu...

Embodiment 2

[0053] The composite magnesium oxysulfide cementitious material for 3D printing in this embodiment includes the following components in mass percentage: light-burned magnesium oxide 35wt%, magnesium sulfate heptahydrate 17wt%, water 17wt%, silica fume 1wt%, naphthalene-based reduced Water 1wt%, carboxymethyl cellulose 5.5wt%, sodium sulfate 2.5wt%, silicone hydrophobic powder 2wt%, sodium lignosulfonate 2wt%, tributyl phosphate 2wt%; fine aggregate (talc powder: Baiyun Stone powder = 7: 3) 15wt%.

[0054] The preparation method of the composite magnesium oxysulfide cementitious material for 3D printing in this example is the same as that of Example 1.

Embodiment 3

[0056] The composite magnesium oxysulfide cementitious material for 3D printing in this embodiment includes the following components in mass percentage: light-burned magnesium oxide 40wt%, magnesium sulfate heptahydrate 15wt%, water 15wt%, silica fume 0.5wt%, naphthalene series Water reducing agent 0.5wt%, carboxymethyl cellulose 5.5wt%, sodium sulfate 2.5wt%, silicone hydrophobic powder 2wt%, sodium lignosulfonate 2wt%, tributyl phosphate 2wt%; fine aggregate (talc : Dolomite powder = 7: 3) 15wt%.

[0057] The preparation method of the composite magnesium oxysulfide cementitious material for 3D printing in this example is the same as that of Example 1.

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Abstract

The invention belongs to the technical field of gel materials, in particular relates to a composite magnesium oxysulfate cementing material used for 3D printing, and further discloses a preparation method and application of the composite magnesium oxysulfate cementing material. The composite magnesium oxysulfate cementing material is formed by adopting a magnesium oxysulfate cementing material (MOS) and aggregate, wherein the magnesium oxysulfate cementing material is composed of magnesium oxysulfate cement, a water reducing agent, a binder, a reinforcing agent, a retarder, a water repellent and glass fibers, and the aggregate is fine aggregate composed of talc powder and dolomite powder. Compared with an ordinary Portland cement material for 3D printing, the composite magnesium oxysulfatecementing material provided by the invention has good cohesiveness, plasticity, extrudability and continuity, and the advantages of good mechanical properties, a light weight, high strength, high early strength, good later strength, good cohesiveness, good carbonization resistance and strong resistance to erosion of various soluble salts, can meet the performance requirements of 3D printing products and can be applied to a 3D printing technology.

Description

Technical field [0001] The invention belongs to the technical field of gel materials, and specifically relates to a composite magnesium oxysulfide gelling material for 3D printing, and further discloses its preparation method and application. Background technique [0002] 3D printing technology is based on digital model files, using powdered metal or plastic and other bondable materials to construct objects by printing layer by layer. Nowadays, 3D printing technology has been widely used in many fields, such as military field, biomedical field, housing construction field, etc. [0003] However, the limitation of materials used in 3D printing technology has become a key factor restricting the development of 3D printing technology. At present, the 3D printing materials used are basically limited to plastics, certain metals or ceramic materials. In addition, the application of cementitious materials in the 3D printing industry is also very popular, but due to the particularity of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/30B33Y70/00B33Y80/00
CPCC04B28/30B33Y70/00B33Y80/00C04B2111/00181C04B2201/50C04B14/28C04B18/146C04B2103/302C04B24/383C04B22/147C04B24/42C04B24/18C04B24/003C04B14/042
Inventor 毕万利孟宪章孙明晶关岩孙美硕
Owner 辽宁科大中驰镁建材科技有限公司
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