Thermal insulation material applied to tube furnace and manufacturing method thereof

The invention relates to a thermal insulation material applied to a tube furnace and a manufacturing method thereof, the thermal insulation material comprises a thermal insulation material body, a silica sol layer coated on the surface of the thermal insulation material body, and an alumina sol layer coated on the surface of the silica sol layer. The silica sol layer and the aluminum sol layer can be attached to the surface of the thermal insulation material body after being dried, the problem that powder of an original thermal insulation material falls off is well solved, no adverse reaction is caused to a heating wire in a tubular furnace, volatilization is avoided in the sintering process, the silica sol layer and the aluminum sol layer can be attached to the thermal insulation material body for a long time, and a sintered product cannot be affected. 一种应用于管式炉保温材料及其制作方法，包括保温材料本体，还包括涂设在所述保温材料本体表面的硅溶胶层、涂设在所述硅溶胶层表面的铝溶胶层。硅溶胶层和铝溶胶层烘干后会附着在保温材料本体表面，很好的解决了原先保温材料掉粉的情况，且对管式炉中的加热丝无不良反应，在烧结过程中无挥发，可长时间附着在保温材料本体上，不会影响烧制产