| abstract |
【Task】 Provided is a method for forming a film that has excellent thick coating properties and has excellent foaming properties when the temperature rises due to a fire or the like, and can maintain the heat-resistant protective performance of a substrate. [Solution] The present invention is a film forming method in which a coating material is applied to a base material to form a coating film, wherein the coating film forms a carbonized heat insulating layer due to a temperature rise. Including the component (A) and the powder component (B), the viscosity is 3 to 70 Pa · s, the heating residue is 70 to 98% by weight, the film-forming component (A) is a polyol component (a1), and A polyisocyanate component (a2) is included, and the polyol component (a1) includes a polyether polyol having a molecular weight of 1000 or more. [Selection figure] None |