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Effect of Mixing Condition on Damping Property in a Nylon 6/MXD6 Blend
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Okumoto, Tadaoki / Koizumi, Junji / Matsuura, Motoshi / Tsutsumi, Daisuke
The morphology of a 80/20 nylon 6/MXD6 blend prepared by melt mixing using a twin screw co-extruder was investigated using a light microscope, a polarized microscope, light scattering and X-ray diffraction. By mixing at a low temperature (250Ž) and a low shear rate (screw speed of 100rpm), the as-extruded blend was opaque and the system was observed to be heterogeneous in a order of 1ƒÊm. The opaque heterogeneous blend became transparent during annealing at 250Ž.
The change in morphology, resulting from adjustment to the mixing condition, had hardly any effect on the damping properties of the blends.
Key words: Melt blend / Extrusion / Damping property / X-ray diffraction / Loss factor / Twin screw co-extruder