| abstract |
PROBLEM TO BE SOLVED: To provide an olefin-modified polystyrene resin pre-expanded particle capable of obtaining a foamed molded article having excellent rigidity, chemical resistance and impact resistance. SOLUTION: The olefin-modified polystyrene resin pre-expanded particles of the present invention comprise polystyrene-based resin pre-expanded particles modified with a polyolefin resin, and the styrene monomer that forms the polystyrene resin is a polyolefin resin 100. It is used in the range of 100 to 1000 parts by weight with respect to parts by weight, the bulk density of the particles is 0.012 to 0.20 g / cm 3 , and the particle surface measured by ATR infrared spectroscopy is used. absorbance ratio at 698cm -1 and 2850 cm -1 obtained from an infrared absorption spectrum (D 698 / D 2850) is characterized by a range of 0.1 to 2.5. [Selection figure] None |