Process of preparing mineral bonding material and its composite material with phosphate and aluminium-silicon material

Abstract

The present invention relates to method of preparing mineral bonding material and its composite materials with phosphate and aluminum-silicon material at relatively low temperature. Under relatively low temperature, aluminum-silicon material with reaction activity is made to produce bonding reaction with phosphate to obtain one kind of amorphous solid Al-Si-P mineral bonding material. The Al-Si-P mineral bonding material may be used as basic material to prepare various composite materials with different performance via adding bauxite, silicon powder, flyash, mineral slag, fiber, etc. The said composite materials may be formed through casting or pressing, and the materials have excellent endurance, high mechanical strength and good high temperature performance.

Description

technical field [0001] The invention relates to the preparation technology of functional inorganic non-metallic materials such as high-temperature materials, corrosion-resistant materials and structural materials, in particular to a method for preparing mineral bonding materials and composite materials thereof from phosphate and aluminum-silicon materials. Background technique [0002] It is well known that the synthesis and preparation of solid-state materials often involve solid-state reactions. Traditional solid-state reactions need to be carried out under high temperature and high pressure conditions. However, under high temperature and other conditions, there are defects such as difficulty in controlling the macroscopic and microstructural characteristics of materials, low reaction speed, and unstable material properties. The technology of preparing solid materials by low-temperature solid-state reaction has become the direction that people pursue. [0003] The existin...

AI Technical Summary

Problems solved by technology

[0006] 3. The disadvantage of refractory castables that use phosphate as a chemical combination is that it is difficult to react with ordinary aluminum-silicon materials at room temperature. For this reason, MgO fine powder or aluminate cement is added to make the refractory castable harden (Han Xinglu edited

The introduction of these metal ions often causes the problem of lower high temperature characteristics of the system

The autotrophic strength of the latter two is low, and the main reaction process of the solid phase needs to be carried out under high temperature conditions.