| 摘要 |
PROBLEM TO BE SOLVED: To provide foamable composite resin particles capable of obtaining a foam molded article having excellent crack resistance and small dispersion in antistatic performance. SOLUTION: The foamable composite resin particle includes 100 pts.wt. of a polyolefin-based resin, 120-560 pts.wt. of a polystyrene-based resin, and a foaming agent and is provided with a surface layer including a cationic antistatic agent. A prefoamed particle is formed with a value A/B obtained by dividing an average bubble diameter A of the bubble in contact with the skin layer of the prefoamed particle by an average bubble diameter B of the bubble passing through the point at the half of the radius of the prefoamed particle of 2-6 when a cross section of a section obtained by dividing the prefoamed particle obtained when the particle is prefoamed into two, passing through the center from the surface is photographed using a scanning electron microscope. Further, the surface coating amount of the cationic antistatic agent is 0.2-2.0 wt.% based on the foamable composite resin particle. COPYRIGHT: (C)2011,JPO&INPIT
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