Thermal-insulation coating

[0014] (1) Take the following raw materials by weight: 2.5 parts by weight of magnesium oxide, 31 parts by weight of silicon-containing materials, 32 parts by weight of vermiculite powder, 5 parts by weight of perlite powder, 6 parts by weight of mica powder, 3 parts by weight of binder, vegetable protein 0.5 parts by weight of glue;

[0015] (2) Add the above-mentioned raw materials by weight into water, the addition amount is 20% of the weight of the raw materials (excluding water), and mix under the condition of 45-50°C;

[0016] (3) Introduce a foaming agent while mixing, and prepare a coating slurry after uniform microbubbles are formed in the material;

[0017] (4) Mix the coating slurry evenly and apply it on the outer layer of the material to form a thermal insulation coating.

[0018] Preferably, the silicon-containing material in the embodiment is one of silicon dioxide, silicate, calcium silicate, and magnesium silicate.

[0019] Preferably, the binder in the embodim

[0021] (1) Take the following raw materials by weight: 3.5 parts by weight of magnesium oxide, 30 parts by weight of silicon-containing materials, 30 parts by weight of vermiculite powder, 5 parts by weight of perlite powder, 7 parts by weight of mica powder, 4 parts by weight of binder, vegetable protein 0.5 parts by weight of glue;

[0022] (2) Add the above-mentioned raw materials by weight into water, the addition amount is 20% of the weight of the raw materials (excluding water), and mix under the condition of 45-50°C;

[0023] (3) Introduce a foaming agent while mixing, and prepare a coating slurry after uniform microbubbles are formed in the material;

[0024] (4) Mix the coating slurry evenly and apply it on the outer layer of the material to form a thermal insulation coating.

[0025] Preferably, the silicon-containing material in the embodiment is one of silicon dioxide, silicate, calcium silicate, and magnesium silicate.

[0026] As preferably, the binding agent in t