Pre-expanded noncrosslinked polypropylene-based resin particles are provided, which comprise a noncrosslinked polypropylene-based resin composition that contains 1 wt% to 30 wt% of an ion-conducting polymer-type anti-static agent that is made of an amphiphilic block copolymer and contains an alkali metal salt of a fluoroalkylsulfonic acid; a method for producing an in-mold expansion-molded article of a noncrosslinked polypropylene-based resin is provided, which comprises the step of filling the foregoing pre-expanded particles into a mold capable of being closed but incapable of being hermetically sealed, and heating the same with water vapor so that the particles are molded; and an in-mold expansion-molded article is provided, which is obtained by the foregoing producing method. Pre-expanded noncrosslinked polypropylene-based resin particles that allow for the production of in-mold expansion molded articles that exhibit an excellent anti-static property and are less contaminating, and an in-mold expansion-molded article obtained from the foregoing pre-expanded particles can be provided.
本发明提供了预膨胀非交联聚
丙烯基
树脂颗粒,该颗粒包含一种非交联聚
丙烯基
树脂组合物,其中含有 1 wt%至 30 wt%的离子传导聚合物型
抗静电剂,该
抗静电剂由两性嵌段共聚物制成,并含有氟烷基
磺酸的碱
金属盐;本发明提供了一种非交联聚
丙烯基
树脂模内膨胀成型品的生产方法,该方法包括以下步骤:将上述预膨胀颗粒填充到可闭合但无法密封的模具中,并用
水蒸气加热模具,使颗粒成型;本发明提供了一种模内膨胀成型品,该产品通过上述生产方法获得。本发明可提供预膨胀非交联聚
丙烯基
树脂颗粒,用于生产抗静电性能优异且污染较少的模内膨胀模塑制品,以及由上述预膨胀颗粒获得的模内膨胀模塑制品。