Resin composition

• US 20030191229A1
• Filed: 03/20/2003
• Published: 10/09/2003
• Est. Priority Date: 03/26/2002
• Status: Abandoned Application

• Current Assignee: Seiko Precision Incorporated (Seiko Group Corp.)
• Original Assignee: Seiko Precision Incorporated (Seiko Group Corp.)
• Inventors: Ito, Akihiro, Kobayashi, Koichi, Yanagisawa, Shigeru, Ikeda, Nami
• Application Number:
  US10/393,649
• Publication Number:
  US 20030191229A1
• Time in Patent Office: Days
• US Class Current: 524/496
• CPC Class Codes: C08K 2201/014 Additives containing two or more different additives of the same subgroup in C08K
• CPC Class Codes: C08K 7/06 Elements

Abstract

To provide a resin composition having superior rigidity and conductivity at a low price. Movers 11a and 11b are produced as a conductive resin composition by resin molding of a resin composition obtained by melt kneading vapor grown carbon fibers (VGCF) and carbon fibers with a thermoplastic resin such as PPS (polyphenylene sulfide). Among the four external surfaces of each mover, a plurality of convexes 12 extending to the direction perpendicular an optical axis A direction of an electrostatic actuator 3 are formed on the opposing surfaces to an upper stator 21a and a lower stator 21b. Accordingly, the carbon fibers having conductivity are aligned over the whole of each mover, especially even in the fine convexes 12 provided on the external surface thereof, and the VGCF is uniformly dispersed and aligned even in portions where the carbon fibers are not aligned.

Claims

1. A resin composition comprising first fine carbon fibers having a fiber diameter of from 1 to 1,000 nm and second fine carbon fibers having a fiber diameter larger than that of the first fine carbon fibers.

2. The resin composition according to claim 1, wherein the content of the first fine carbon fibers is higher than the content of the second fine carbon fibers.

3. The resin composition according to claim 1, wherein the content of the second fine carbon fibers is higher than the content of the first fine carbon fibers.