| abstract |
The invention intends to provide a technique for making a dispersion phase of a biomass origin component of a polymer composite material, wherein the dispersion phase is formed in a parent phase of a synthetic polymer, highly minutely and evenly. An apparatus ( 10 ) for manufacturing a polymer composite material is characterized by comprising: a cylinder ( 13 ) in which a feeding section (A) for feeding a principal component of the synthetic polymer and an excess hydrous substance of the biomass origin component is provided in the upstream side while a extracting means ( 17 ) is provided in the downstream side; a screw ( 15 ) which axially rotates within the cylinder ( 13 ), which has been set to a kneading temperature (Tz) at which the synthetic polymer melts, and extrudes the kneading substance comprising the main component and the excess hydrous substance toward the extracting means ( 17 ); and a dehydration means ( 40 ) by which water contained in the kneading substance is removed under setting pressures (Pa, Pb, PC) being lower than the saturated vapor pressure (Pz) at the kneading temperature (Tz) employed in the cylinder ( 13 ) but higher than atmospheric pressure. |