Abstract
In this paper, fumed nano-SiO2 as the main raw material, SiO2 insulation materials were prepared by the dry processing. Porous characteristic, insulation performance and mechanical properties have been systematically studied. The dry processing method for the fabrication of fibrous fumed silica boards is used. As a reinforcing fiber, K2O•6TiO2 not only improves the strength of the material, but also enhances the thermal insulation performance of the material at high temperature. The effect of fiber content on the mechanical and personal properties of materials was studied. At 20% fiber content, the compressive strength reaches 3.96 MPa, and the thermal conductivity increases from 0.048 W/m•k at 200°C to 0.094 W/m•k at 600°C.
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