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A kind of supergravity centrifugal 3D printed lunar soil concrete and its preparation method

A 3D printing and concrete technology, which is applied in the fields of aerospace, aviation, and space base station construction, can solve problems such as the impact of lunar soil concrete, and achieve the effect of CNC machining efficiency, structural force rationality, and continuous processing

Active Publication Date: 2022-04-29
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a supergravity centrifugal 3D printed lunar soil concrete and its preparation method, which solves the influence of vacuum and weightlessness environment on lunar soil concrete in the actual construction environment

Method used

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  • A kind of supergravity centrifugal 3D printed lunar soil concrete and its preparation method
  • A kind of supergravity centrifugal 3D printed lunar soil concrete and its preparation method
  • A kind of supergravity centrifugal 3D printed lunar soil concrete and its preparation method

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preparation example Construction

[0036] The supergravity centrifugal 3D printed lunar soil concrete and its preparation method provided by the present invention comprise the following steps:

[0037] (1) Screen and select lunar soil components suitable for 3D printing, and select suitable activators and lunar soil to configure lunar soil concrete.

[0038] (2) Stir and mix the lunar soil concrete to a flow-plastic state, extrude and print it in the centrifugal cylinder, turn on the centrifugal cylinder to rotate at a uniform speed and horizontally position and move the printing to form a structure, so as to solve the difficulty that the lunar soil environment cannot be stacked and formed under weightlessness.

[0039](3) After the printing is completed, increase the centrifugal speed to a stable molding speed r 1 , select the centrifugation time to be 3-10 minutes according to the excitation method and composition ratio of the lunar soil;

[0040] (4) Enter the compaction stage of the 3D printed lunar soil c...

Embodiment 1

[0043] Embodiment 1 Preparation method of honeycomb hollow structure

[0044] 1. Put the mined lunar loam into the lunar soil import device 1, and obtain the raw materials of the lunar soil concrete through the refining and screening device 2: lunar soil highland sand 340, amorphous volcanic soil 60, JCS-1 soil 70, plain soil and sand 30 ;

[0045] 2. After calcining and cooling the raw materials of lunar soil concrete at high temperature in the batching and mixing device, mix them with water 150 (the material processing temperature is 1350-1450 degrees Celsius, and the hydration temperature is 20-80 degrees Celsius), sodium metasilicate 30, and sodium hydroxide 25. , fully stirred to form flow-plastic lunar soil concrete as printing ink (with the proportion of raw material similar to that of the earth, the concrete strength after excitation and mixing by the same process is greater than 35Mpa, and the fluidity is 183, which is suitable for 3D printing);

[0046] 3. Arrange t...

Embodiment 2

[0050] Embodiment 2 Capsule type hollow structure preparation method

[0051] 1. Put the mined lunar loam into the lunar soil import device 1, and obtain the raw materials of the lunar soil concrete through the refining and screening device 2: lunar soil highland soil sand 150, amorphous volcanic soil 160, JCS-1 soil 170, plain soil sand 20 ;

[0052] 2. After calcining and cooling the raw materials of lunar soil concrete at high temperature in the batching and mixing device, mix fully with water 190 (material processing temperature is 1350-1450 degrees Celsius, hydration temperature is 20-80 degrees Celsius) and polycarboxylate superplasticizer 1.5 Stir to form flow-plastic lunar soil concrete as printing ink (with the proportion of materials similar to the earth, the strength of the concrete mixed by the same process is greater than 45Mpa, and the fluidity is 179, which is suitable for 3D printing);

[0053] 3. According to the shape of the preset structure, a variable-diam...

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Abstract

The invention discloses a supergravity centrifuge 3D printed lunar soil concrete. The raw materials of the lunar soil concrete include amorphous volcanic soil 30‑100, highland soil sand 100‑450, plain soil sand 15‑120 and JSC in parts by weight. ‑1 soil 50‑100, the raw materials are processed by activators or calcined and then hydrated to obtain lunar soil concrete. The invention also discloses a method for preparing lunar soil concrete: putting lunar soil into a lunar soil import device and passing through a refining and screening device to obtain raw materials; processing the raw materials with activators or calcining them in a batching and mixing device, and then hydrating them to form flow-plastic lunar soil The concrete is sent to the printing device for printing and extrusion molding; the extruded lunar soil concrete is stacked and formed in the centrifugal device; the ribs are placed in a fixed position during the stacking and forming process, and assembled under the action of the centrifugal device to form a reinforced structural member ;Combined with the printing and reinforcement process, it is centrifuged multiple times in stages. The lunar soil concrete and its preparation method solve the influence of vacuum and weightless environment on the lunar soil concrete in the actual construction environment.

Description

technical field [0001] The invention belongs to the technical fields of aerospace, aviation, space base station construction, etc., and in particular relates to a lunar soil concrete printed by supergravity centrifugal 3D printing and a preparation method thereof. Background technique [0002] The moon is rich in resources. The lunar soil contains 1-5 million tons of helium-3, which can be used by humans as clean energy for a long time. The moon is rich in ferro-titanium, and there are more than 70 trillion tons of TiO 2 Reserves, rich in potassium, uranium, phosphorus and rare earth elements, rational use of lunar resources will greatly promote the development and progress of human society and civilization on Earth. In order to realize the research, development and utilization of lunar data, after the completion of the lunar landing program, establishing a stable, safe and applicable lunar base to collect and utilize rich mineral resources has become the next aggressive sci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00B33Y70/10
CPCC04B28/006B33Y70/10C04B14/06C04B14/361C04B14/14
Inventor 孙晓燕王海龙王冠楠叶柏兴
Owner ZHEJIANG UNIV
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