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Simulated Mars soil concrete suitable for extrusion and preparation method thereof

A concrete and fire soil technology, applied in the fields of aviation, aerospace and architectural coatings, can solve the problems of fire soil uncertainty and complex fire soil gradation, and achieve the effect of easy control.

Pending Publication Date: 2020-11-13
BEIJING SATELLITE MFG FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Fire soil gradation is complex and there are uncertainties in fire soil in different landing areas

Method used

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  • Simulated Mars soil concrete suitable for extrusion and preparation method thereof
  • Simulated Mars soil concrete suitable for extrusion and preparation method thereof
  • Simulated Mars soil concrete suitable for extrusion and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0033] A method for preparing fire soil "concrete" suitable for extrusion. First, pour 100 parts of simulated fire soil and 45-46 parts of calcium silicate into a container, add 20-21 parts of water, and turn on the stirring device to process the materials. Physically mix, at the same time pour 0.4-0.5 parts of hydroxypropyl methylcellulose into the remaining water, and stir evenly with a glass rod, then gradually add the hydroxypropyl methylcellulose solution into the simulated fire soil "concrete" and continue stirring until a "concrete" slurry suitable for extrusion molding with a viscosity of 50-100 Pa·s and good fluidity is prepared.

[0034] Extrude the pretreated "concrete" slurry from the printing nozzle, and control the extrusion flow to 100-150mm 3 / min, in order to realize the continuous and controllable extrusion molding of simulated fire soil concrete.

[0035] The extrusion device used in the method includes a drive motor, a coupling, a screw extrusion device an...

Embodiment

[0040] By setting the feed port on the screw extrusion device, the discharge end of the high-pressure pipe can be connected to realize the printing of large structural parts with a maximum stroke of 2m*2m*1m, and the screw extrusion device can be connected to a certain size of 3D printing The funnel realizes the instant filling of small batches of simulated fire soil mixture, prevents the screw extrusion device and printing nozzle from being blocked or even scrapped due to the short-term solidification of a large amount of slurry, and it is easier to realize the control of process parameters.

[0041] Step 1: Use modeling software to design and slice the nozzle structure. The slicing is to perform hierarchical processing on the design structure.

[0042] Step 2: Select a 3D printing material (such as nylon) with a printing accuracy of 0.1mm as the material of the printing nozzle to ensure the controllable extrusion of the simulated fire soil "concrete" slurry.

[0043] Step 3...

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Abstract

The invention relates to a simulated Mars soil concrete suitable for extrusion and a preparation method thereof. The simulated Mars soil concrete comprises simulated Mars soil, calcium silicate, hydroxypropyl methyl cellulose and water. Calculated by taking the mass of the simulated Mars soil as 100 parts, the concrete is prepared from the following components in parts by mass: 45 to 46 parts of calcium silicate, 57 to 59 parts of water and 0.4 to 0.5 part of hydroxypropyl methyl cellulose. The concrete is added into a screw extrusion device through a feeding port in the screw extrusion device, then a driving motor is started, and the concrete is extruded and moulded.

Description

technical field [0001] The invention relates to a simulated fire soil "concrete" and a preparation method thereof, which are mainly used in technical fields such as aerospace, aviation, and architectural coatings. Background technique [0002] Mars is the planet with the closest environment to Earth in the solar system, and one of the planets in the solar system where life is most likely to exist. Its surface material composition and climate periodic changes are very similar to Earth in many aspects. Unlike the moon and other extraterrestrial bodies, Mars has rich atmosphere, water ice and mineral resources, and has extremely high development and utilization prospects. Entering the 21st century, with the continuous development of space technology and the expansion of space application requirements, Mars exploration has become the focus and hotspot of deep space exploration in the world, and manned Mars exploration will become the space technology of major aerospace powers in...

Claims

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Application Information

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IPC IPC(8): C04B28/18B33Y70/10
CPCC04B28/188B33Y70/10C04B24/383
Inventor 左洋祁俊峰崔庆新谢玉萍王哲陈怡王震李敬洋周占伟舒文祥陈材巩维艳聂中原张建超
Owner BEIJING SATELLITE MFG FACTORY
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