| abstract |
The flame retardancy and the fire resistance are excellent, the long-term stability of the heat insulating performance is good, the dimensional change at the time of molding is small, the strength is excellent, the brittleness is improved, the water absorption is low and the pH is high, A foamable resole-type phenol resin molding material which imparts a phenol resin foam having good corrosion resistance to the phenolic resin foam material, and a phenolic resin foam material having such properties. And at least a liquid resol-type phenol resin, a foaming agent and an acid curing agent, and further contains a nitrogen-containing crosslinking cyclic compound and a silicone oil as additives and chloropropane as such a blowing agent. |