PHENOLIC RESIN FOAMED PLATE AND METHOD FOR PRODUCING SAME
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United States of America Patent
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Issued Date -
Oct 25, 2012
app pub date -
Dec 15, 2010
filing date -
Dec 18, 2009
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Abandoned
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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 Q1 to Qn in order from the main surface side, where average densities of Q1 to Qn are dq1 to dqn, respectively, the ratio (dqmin/dqave) of a minimum value dqmin of dq2 to dq(n-1) to an average value dqave of dq2 to dq(n-1) is 0.91≦dqmin/dqave≦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.
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