| 摘要 |
PURPOSE:To obtain the titled foamed material having remarkably improved rigidity, low specific gravity and high impact resistance, by mixing a specific flaky inorganic filler to a resin and foaming the mixture. CONSTITUTION:The objective foamed material is produced by compounding (A) a thermoplastic resin (polyolefin) with (B) a flaky inorganic filler having an average particle diameter of 5-3,000mu and an average aspect ratio of >=10 and foaming the mixture. The weight ratio of B/A is 10/90-70/30. The foamed material is a sheet or plate having an expansion ratio of 1.1-10 and a thickness of 0.2-100mm. The component B is glass flake, mica, etc., preferably phlogopite from Canada. The foaming is carried out preferably by chemical foaming using azodicarbonamide, etc. |
