| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide an oil having effects on prevention of environmental pollution, and also having excellent operability, wettability and adhesion to a filament reinforcing yarn for a composite material; to provide a filament bundle obtained by being treated with the oil and providing excellent treatability; and to provide the resin composite material obtained by using the filament bundle and exhibiting excellent reinforced effects. <P>SOLUTION: The oil for the filament contains a crystalline copolyester resin having a hydrophilic group and water as main components, and has≤70×10<SP>-3</SP>N/m surface tension. The filament bundle is bundled by using the oil. The composite material constituted of the filament bundle and a matrix resin contains an aromatic dicarboxylic acid component and sodium sulfonate on the surface of the filament. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
