2000 Volume 12 Issue 12 Pages 800-805
The material recyclability of shredder dust of car carpets as insulating boards was investigated by using a compression molding method. The shredder dust used here was mainly composed of nylon 6 (NY 6), and polyester (PET) fibers. The shredder dust was heated in a furnace with infrared heaters such that NY 6, having a lower melting point than PET, was solely melted. After the heating process, the shredder dust was compressed, cooled and easily molded into a porous board with low thermal conductivity. The thermal conductivity and bending strength increased with increasing density of molded board. The thermal conductivity increased suddenly when the melted NY 6 connected the neighboring PET fibers. The results suggest that the compression molding method described here shows promise in contributing toward the material recycle of shredder dust of car carpet as insulating boards.
