A new insulating coating with characteristics of sand texture and imitation ceramic

• The coating mainly consists of hollow microcapsule materials.
• The coating has a lower thermal conductivity and a imitation ceramic decorative effect.
• The coating has good adhesive, mildew and corrosion resistance, and good acid and alkali resistance.

A new type of multi-functional and cost-effective insulating coating is prepared by mixing a class of hollow microcapsule powder and adhesive of melamine urea–formaldehyde resin of hollow microcapsule material. The new insulating coating shows great property of heat preservation, sand texture and decorative effect of imitation ceramic. The results show that the best formula of the insulating coating is one part of hollow microcapsule powder to three parts of adhesive. The coating has good adhesive, mildew and corrosion resistance, acid and alkali resistance. The coating’s maximum degradation temperature rate Tp is up to 410 °C, which is higher than that of commercial coating (86 °C). Moreover, its density and thermal conductivity is 0.780 g/cm3 and 0.055 W/(m K), respectively.