Development of Light Weight Materials with Low Thermal Conductivity by Making Use of Waste FRP

• Published in: Funtai Kogakkaishi Vol. 47; no. 11; pp. 768 - 772
• Main Authors: Kondo, Akira, Abe, Hiroya, Isu, Norifumi, Miura, Masashi, Mori, Azusa, Ohmura, Takahiro, Naito, Makio
• Format: Journal Article
• Language: English
• Published: The Society of Powder Technology, Japan 01.01.2010
• Subjects: Attrition type milling; Fiber reinforced plastic; Low thermal conductivity; Recycling
• ISSN: 0386-6157; 1883-7239
• DOI: 10.4164/sptj.47.768

Fiber Reinforced Plastics (FRP) is a difficult material for recycling. The authors developed a new recycling method of FRP by making use of attrition type milling. The waste FRP was selectively separated to glass fibers, matrix resin particles and fillers (calcium carbonate etc.) by the milling. The separated glass fibers kept their own structure without significant breakage into small pieces. Bonding process of nanoparticles on the surface of the processed particles was also developed by making use of attrition type milling. Actually, the surface of the separated particles was uniformly coated with fumed silica nanoparticles by this method. The coated particles were then compacted, and pressed to make bulk body in dry phase. The thermal conductivity at room temperature achieved about 0.03 W / (m · K) under low bulk density.