A kind of preparation method of three-dimensional oxide fiber composite material

Abstract

A method for preparing a three-dimensional oxide fiber composite material, using low-cost ceramic powder waste as a matrix material and supplemented with a dual-phase fiber body as a reinforcement, which is environmentally friendly and meets the requirements of green industrialization, and indirectly alleviates environmental governance pressure. According to the difference in the properties of different fibers, the present invention creates a composite method of "double mutual complementarity". By introducing low-cost reagents such as oxalic acid and isobutanolamine to modify and etch the surface of the fiber and precursor solution, the different fibers are improved. The interfacial bonding force and dispersion performance between the two materials have realized the laminated composite of aluminum silicate fiber cloth with high melting point and poor thermal shock resistance and alumina fiber cloth with low melting point and good thermal shock resistance, effectively avoiding the single The mechanical defects of phase fiber cloth and construct a three-dimensional fiber composite system of "dual-phase fiber-filler-cheap matrix" with excellent mechanical properties.

Description

A kind of preparation method of three-dimensional oxide fiber composite material technical field The invention belongs to material field, be specifically related to a kind of preparation method of three-dimensional oxide fiber composite material. Background technique [0002] The high temperature oxide / oxide ceramic matrix composite is a combination of a ceramic matrix and a better compatible reinforcement. product, since the 1980s, this type of material has gradually been used in the industry due to its excellent high temperature oxidation resistance, high hardness and stress elasticity Commercial fields such as aircraft turbines and automobile friction plates have achieved large-scale industrial production and application. In 2019, the domestic market The share has reached more than 100 billion yuan [Zhao Hong.Fiber Composites Growth[J].China Textile, 2019 (07):8‑10.]. [0003] Most of the high temperature oxide / oxide ceramic matrix composites use polycrystalline oxi...

AI Technical Summary

Problems solved by technology

At present, the research and development of domestic oxide fibers is limited by technology, mainly based on basic research, and only technological breakthroughs have been made in the field of chopped fibers. It is technically difficult to achieve uniform compounding of multi-phase materials and The refinement of ceramic grains still has a long way to go compared with the mature fiber preparation systems in Europe, America, Japan and other countries[Effect of aluminum silicate fiber modification on crack-resistance of a ceramic mold[J].China Foundry, 2012,9(04):322-327.]

Images