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In this article, the influence of the churning technology on the average diameter of xonotlite particle and the micro-structure of xonotlite particle during the hydrothermal synthesis progress of the heat insulating material of xonotlite were researched. The influence of fiber adding process on the strength and density of calcium silicate insulation material was studied. The complexity and the macro mechanical properties of the fiber dispersed in the matrix with different fiber adding way were discussed. The microstructure of xonotlite was observed and analyzed by scanning electron microscope and the related mechanisms were studied.

The hard silicon calcium stone slurry were synthesized by dynamic hydrothermal synthesis in this article, the influence of water solid ratio and carbon fiber on the performance of the calcium silicate thermal insulation material was studied. The results showed that when the water-solid ratio of 40, sodium dodecyl benzene sulfonate cited as a foaming agent, the sphericity of spherical particles was well, and xonotlite fiber developed well. The added carbon fiber could significantly increase the flexural and compressive strength and coefficient of thermal conductivity of the material. The microstructure of calcium silicate insulation material was observed and analyzed by scanning electron microscope.