| 摘要 |
PROBLEM TO BE SOLVED: To obtain a high-strength, solid and noncombustible phenol resin foam having a smooth surface and a high level of fire resistance, a low water absorption and a high physical strength. SOLUTION: This foam is obtained by adding 400-900 pts.wt. of ceramic hollow microparticles 1 having >=600 kgf/cm<2> compressive strength, 0.3-0.5 g/cm<3> bulk specific gravity and >=1,500 deg.C melting point, 100-250 pts.wt. of a glass powder 3 and/or a flux, 100-250 pts.wt. of aluminum hydroxide, 5-30 pts.wt. of glass fibers 4 having <=13μm diameter and 3-8 mm length and some quantity of water to 100 pts.wt. of a resol type phenol resin 2, 3-10 pts.wt. of a blowing agent and 10-50 pts.wt. of a curing agent and molding and curing the resultant mixture.
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