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    • 6. 发明申请
    • Extruded, polystyrene-based resin foam plate and method for the production thereof
    • 挤出聚苯乙烯类树脂发泡板及其制造方法
    • US20030042644A1
    • 2003-03-06
    • US10170725
    • 2002-06-14
    • JSP CORPORATION
    • Hiroyuki GokurakuNaochika KogureSeiji TakahashiDaisuke ImanariMasato Naito
    • B29C044/00B32B003/26
    • C08J9/149B29C44/505B29C48/07B29C48/903B29C48/908C08J9/141C08J2201/03C08J2203/12C08J2203/14C08J2325/06Y10T428/249953
    • An extruded, polystyrene-based resin foam plate produced by extruding a foamable molten composition containing a polystyrene-based resin and a blowing agent consisting of (a) isobutane and (b) a blowing agent component other than isobutane, chlorofluorocarbons and fluorocarbons from a high pressure zone into a lower pressure zone. The extruded foam plate has a thickness of at least 10 mm and an apparent density of 25-60 kg/m3 contains residual isobutane in an amount of 0.45-0.80 mol per 1 kg thereof, has cells having an average diameter in the thickness direction thereof of 0.05-0.18 mm and a cell strain rate of 0.7-1.2, wherein the cell strain rate is obtained by dividing the average diameter in the thickness direction of the extruded foam plate by the average diameter in the horizontal direction of the extruded foam plate, meets the flammability standard on extruded polystyrene foam insulation plates as defined in JIS A9511-1995, and has a thermal conductivity of not greater than 0.028 W/mnullK.
    • 挤出的基于聚苯乙烯的树脂发泡板,其通过挤出含有聚苯乙烯类树脂的发泡性熔融组合物和由(a)异丁烷和(b)异丁烷,氯氟烃和碳氟化合物以外的发泡剂组分组成的可发泡熔融组合物 压力区进入低压区。 挤出的泡沫板的厚度为至少10mm,表观密度为25-60kg / m 3,其含有残留的异丁烷,每1kg为0.45-0.80mol,具有其厚度方向的平均直径的细胞 为0.05〜0.18mm,细胞应变率为0.7-1.2,其中细胞应变率通过将挤出泡沫板的厚度方向上的平均直径除以挤出泡沫板的水平方向的平均直径而得到, 符合JIS A9511-1995定义的挤压聚苯乙烯泡沫绝缘板的可燃性标准,导热率不大于0.028 W / mK