| abstract |
The non-flammable phenolic resin foam with plane surface and high fire resistance in this invention is produced by mixing 30 to 100 parts by weight of resol type phenolic resin, 0.3 to 10 parts by weight of foaming agent, 10 to 50 parts by weight of curing agent, 30 to 800 parts by weight of ceramic micro-hollow particles (compression strength of 600 kgf/cm 2 or more, bulk density of 0.3 to 0.5 g/cm 3 and melting point of 1500° C. or more), 2 to 250 parts by weight of inorganic filling agent, 40 to 250 parts by weight of aluminum hydroxide with water, press molding and heating for curing. |