| abstract |
The present invention provides a polyoxygenated foamed sheet which exhibits excellent defoaming property, has good adhesion to a member to be bonded, and has good sealing properties, and can maintain the effect of such effects even if the thickness is made thin. Preferably, the stable elastic modulus is exhibited from a low temperature region to a high temperature region, and the compression set in the low temperature region and the compression set in the high temperature region are both low. Further, the present invention provides a polyoxygenated foamed sheet composite having such a polyoxygenated foamed sheet. Further, the present invention provides a method of producing such a polyoxygenated foamed sheet. The polyfluorene foamed sheet of the present invention has a thickness of 10 μm to 3000 μm and has an open cell structure, an open cell ratio of 90% or more, an average cell diameter of 1 μm to 50 μm, and 90 of all cells. The cell diameter above % is 80 μm or less. |