| abstract |
A phenolic resin foamed plate having a thickness of 50 mm or more, in which when the phenolic resin foamed plate is sliced from one main surface of the phenolic resin foamed plate along the main surface in a thickness direction at 5 mm intervals to produce n pieces, which are designated as Q 1 to Qn in order from the main surface side, where average densities of Q1 to Qn are d q1 to d qn , respectively, the ratio (d qmin /d qave ) of a minimum value d qmin of d q2 to d q(n-1) to an average value d qave of d q2 to d q(n-1) is 0.91≦d qmin /d qave ≦0.98, and when a density distribution line is obtained, there exists a straight line parallel with the axis of abscissas that intersects the density distribution line at four points. The phenolic resin foamed plate exhibiting practically sufficient compressive strength and thermal conductivity even when the product thickness is increased. |