A kind of refractory coating applied to the surface of foam aluminum

Abstract

The invention belongs to the technical field of refractory materials, and in particular relates to a refractory coating for coating on the surface of aluminum foam, including a coating mixture A and a coating mixture B, and the coating mixture A includes the following raw materials in parts by weight: water-soluble polyester emulsion 40 to 53 parts, 34 to 50 parts of polyolefin hot melt adhesive, 15 to 35 parts of graphite powder; the coating mixture B includes the following raw materials in parts by weight: 30 to 55 parts of raw silicone rubber, 15 to 28 parts of silicone resin parts, 4-9 parts of inorganic nano-whiskers, 0.5-2 parts of SEBS, 0.1-0.5 parts of initiator; paint mixture A and paint mixture B are sprayed onto the surface of foamed aluminum in turn to form a composite coating; in the present invention, the The coating mixture A can significantly improve the heat dissipation ability of the aluminum foam surface and improve the thermal conductivity, and the coating mixture B can ensure the stiffness retention ability of the aluminum foam material at high temperature and prevent the aluminum foam material from softening due to high temperature. This ensures the reliability of the aluminum foam material used at high temperatures.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a refractory paint applied on the surface of foamed aluminum. Background technique [0002] Aluminum foam is a new type of multifunctional foam material, which has many excellent properties of metal and air bubbles. It has been widely used in construction, transportation and other industries in the civilian field. Aluminum foam material has light weight, sound insulation, and absorption Acoustic, noise reduction, flame retardant and other performance characteristics, according to whether the pores are connected or not and the pore structure can be divided into two types: closed-cell type and open-cell type. The closed-cell structure is that its internal cells are independent of each other and separated by the parent metal, and each cell is closed; the open-cell structure refers to the internal cells connected to each other, and a single cell is not closed...

AI Technical Summary

Problems solved by technology

However, the foamed aluminum material is prone to softening under high temperature baking. When used as a load-bearing material or subjected to external forces, the foamed aluminum material often cannot maintain a good shape, causing the material to collapse and lead to secondary accidents.