The invention relates to the field of functional coatings and particularly relates to a high-temperature-resisting heat-insulation
coating and a preparation method thereof. The high-temperature-resisting heat-insulation
coating is composed of the following raw materials in percentage by
mass: 10%-40% of high-reflection paint with a shell-core structure, 10%-40% of heat-insulation
powder with the shell-core structure, 1%-5% of a
toughening agent, 10%-50% of a high-temperature bonding agent, 1%-10% of a
coating auxiliary agent, and the balance of water. The preparation method comprises the following steps: mixing, dispersing and
grinding raw materials; carrying out homogenization to enable an average grain
diameter to be 325-400 meshes; and filtering and packaging to obtain a finished product. The high-temperature-resisting heat-insulation coating can be applied to high-temperature fields of industrial furnaces, industrial boilers, high-temperature steam pipelines,
petroleum cracking equipment, engine parts, high-temperature
smelting,
sintering furnaces and the like, and can be used under a higher temperature for long time; the
energy consumption can be saved and the service life of the furnaces is prolonged.