Sulfur concrete with sublimation corrosion resistance and preparation method thereof

Abstract

The invention belongs to the technical field of macromolecule materials, and discloses sulfur concrete with sublimation corrosion resistance and a preparation method thereof. The sulfur concrete is prepared from, by mass, 15-20% of sulfur, 0.2-0.6 % of an additive, 55-65% of lunar rock coarse aggregate and 14-26% of lunar soil filler. The additive is prepared by mixing magnesium stearate, polystyrene fluoride and carbon tetrafluoride at the mass ratio of 1:5:20, and the addition amount of the additive is 1-4% of sulfur. The additive is used for pre-modifying sulfur, the sublimation rate of sulfur components in sulfur concrete under high vacuum conditions is effectively reduced, the durability of sulfur concrete under high vacuum conditions is improved, and the preparation technology is simple and easy to operate, the construction efficiency is high, and the sulfur concrete is easy to produce and use under high vacuum conditions such as the moon.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a sublimation-corrosion-resistant sulfur concrete and a preparation method thereof. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: the mineral resources, energy resources and special resources of the moon will play a long-term and stable supporting role in the sustainable development of human society. The first goal of layer space development. In the 2006-2020 "National Medium- and Long-Term Science and Technology Development Plan", China listed the lunar exploration project as one of the 16 major special projects, and initially formulated the goal of manned moon landing and the establishment of a lunar base in 2030. Other countries and regions in the world such as the United States, the European Union, Japan, Israel, etc. have also released plans to establish moon bases. In order to build ...

AI Technical Summary

Problems solved by technology

The surface of the moon is a high vacuum environment (about 1×10 -12 torr, which is 1.33×10 -12 Pa), the sublimation solid-gas phase transition temperature of sulfur will be lower, and the ambient temperature near the lunar equator is -180°C to 123°C, and the ambient temperature near the pole is -60°C to -220°C, which will accelerate the decomposition of sulfur Sublimation, the sublimation of sulfur will cause the deterioration of the structure and bring new problems to the long-term use of sulfur concrete

[0003] To sum up, the problems existing in the existing technology are: the sublimation rate of the existing sulfur concrete is relatively high, which cannot meet the long-term use of lunar sulfur concrete

However, the high sublimation rate of traditional sulfur concrete in the lunar high-vacuum environment will seriously affect its service time, effectively improving the sublimation corrosion resistance of sulfur concrete in high-vacuum conditions is a must for the concrete used in lunar base construction to maximize the use of lunar resources. The problem solved is an important guarantee for the long-term service performance of the lunar base

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