| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To enable primary particles to be uniformly dispersed in a resin by easily crushing secondary particles of an ultra-fine powder of a nanometer order to the primary particles. <P>SOLUTION: A kneading apparatus comprises the raw material insertion process of heating a mixture G0 of the ultra-fine powder U and the resin G around an insertion screw 22, a liquid phase kneading and dispersing process of dispersing the secondary particles of the ultra-fine powder U in the mixture G0 heated up to resin melting temperatures Tm to Ts where the resin G is melted, the deaeration process of deaerating gas vaporized from inside the mixture G0, the solid phase kneading and dispersing process of crushing the secondary particles of the ultra-fine powder U as a brittle particle by cooling to a temperature in the vicinity of a resin heat deformation temperature Td where the resin G maintains a solid phase state to add a shear stress to the mixture G0, the repeating liquid phase kneading process of repeatedly applying liquid phase kneading processing by heating up to a temperature slightly lower than the resin melting temperature Ts where the resin G is repeatedly melted, the extrusion process of extruding a functional composite resin G1, and the molding process of molding the functional composite resin G1 into a round stringy product. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
