Ceramic-base high-strength lightweight buoyancy material

Abstract

The present invention discloses a preparation method for new type ceramics-based buoyancy material with light weight and high intensity, wherein the polishing waste sludge from the ceramics factory serves as the main material, the porous ceramic material which has high sealed porosity content and prepared by dry pressing, injection moulding, atmospheric pressure sintering, high temperature chemical blowing process serves as the matrix of the new type ceramics-based buoyancy material, and epoxy resin serves as the fortified outer wall. Compared with the prior art, the buoyancy material of the present invention has excellent endurance and weathering resistance, sea-water corrosion resistance, aging resistance, small specific absorption of volume, high mechanical strength, simple preparation process, low cost and convenience for industrialisation. The internal pore of the porous ceramics has an uniform distribution and the sealed porosity is more than 95% due to the high temperature foaming in situ. The new type buoyancy material has low density and high compression strength. The porous ceramic material prepared by sintering at 1180 DEG C has a density of 0.35g / cm<3> and a compression strength of more than 7 MPa. The buoyancy material which is modified by epoxy resin has a density of 0.52g / cm<3> and a compression strength of more than 20 MPa.

Description

technical field [0001] The invention relates to a preparation method of a novel ceramic-based high-strength light-weight buoyancy material. Background technique [0002] At present, in major research areas such as deep-sea mineral resource investigation, geology and geophysics, biological activities, and global climate change, there is an urgent need for comprehensive observation data of long-term and spatial-scale underwater changes in specific sea areas and even globally. This requires the technical support of high-performance deep-sea survey instruments and equipment, otherwise it will be difficult to obtain innovative research results and research and exploration of areas that have not been set foot in the deep sea. This research will face the national strategic needs and the world's frontiers of science and technology, carry out innovative research on the preparation technology of high-strength and low-density buoyancy materials required in the field of deep-sea environ...

AI Technical Summary

Problems solved by technology

Research on buoyancy materials began in the 1980s. There have been reports on the use of lightweight composite hollow balls, but the depth of use is only 600 meters.

In the 1980s, there were experiments using ceramic balls as buoyancy materials, but because ceramic balls could not accurately control the uniformity of the balls during the molding and sintering process, they were prone to bursting under high pressure and caused the entire ceramic balls to collapse. destroy

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