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Carbon black-containing composite resin pre-expanded particles and its production method and foamed molded
Carbon black-containing composite resin pre-expanded particles and its production method and foamed molded
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机译:含炭黑复合树脂预发泡颗粒及其生产方法和发泡成型
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摘要
Carbon black-containing composite resin pre-expanded particles comprising 100 to 400 parts by mass of a polystyrene-based resin with respect to 100 parts by mass of a carbon black-containing polyolefin-based resin; having a carbon black content of 0.5 to 5.0% by mass and a bulk density of 0.015 to 0.25 g/cm 3 ; and having an outermost layer of 30 to 80 µm after undergoing the following tests: (a) one of the carbon black-containing composite resin pre-expanded particles is sliced into a 1-mm slice in such a way that cross-section surfaces of cells are exposed on both surfaces of the slice; (b) the obtained slice is immersed in toluene at 25°C for 24 hours to extract a polystyrene-based resin component as described above; (c) the cross-section surface of the slice is then subjected to magnified photographing by a microscope; (d) the obtained microscope image is observed.
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机译:含炭黑的复合树脂预发泡颗粒相对于100质量份的含炭黑的聚烯烃类树脂,包含100〜400质量份的聚苯乙烯类树脂。炭黑含量为0.5〜5.0质量%,堆积密度为0.015〜0.25g / cm 3。和经过以下测试后,其最外层为30至80 µm:(a)将一种含炭黑的复合树脂预发泡颗粒切成1毫米的切片,使细胞的横截面暴露在切片的两个表面上;(b)将得到的切片在25℃的甲苯中浸渍24小时,以提取如上所述的聚苯乙烯类树脂成分。(c)然后用显微镜对切片的横截面进行放大摄影;(d)观察获得的显微镜图像。
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