| 摘要 |
Ethylenic polymer/styrenic polymer blend foams are prepared from blends of (1) an ethylenic polymer resin having a density of from 0.915 to 0.930 g/cm<3> and a melt index of from 0.2 to 2.6 grams/10 minutes and (2) a styrenic polymer resin having a melt flow rate of from 1.4 to 18 grams/10 minutes. Foams having an excellent overall combination of properties are obtained (1) when the density, D, of such foams is in the range of from 10 to 40 kg/m<3> and the 25 percent compressive strength, F, in kg/cm<2> is from 0.013D<1.15> to 0.024D<1.15> and (2) when the ratio, R, of the melt flow rate of the styrenic polymer employed divided by the melt index of the ethylenic polymer employed is from 7 to 90 and the content, Y, of the styrenic polymer in said blend, in parts by weight based upon 100 parts by weight of the ethylenic polymer resin, satisfies the following requirement: 10 </= Y </= 394.7 + 1.18R - 294.1 log (D). |
