Title:
高密度複合材料
Document Type and Number:
Japanese Patent JP4119840
Kind Code:
B2
Abstract:
A composite material which comprises an elastomer or vulcanized rubber and particles of a high-density material, such as tungsten, evenly dispersed therein, wherein the contents of the elastomer or vulcanized rubber and the high-density particles are 35 to 50 vol. % and 50 to 65 vol. %, respectively, based on the whole composite material, and the high-density particles have a particle composition comprising 60 to 80 vol.% coarse particles having a particle diameter of 10 to 100 mu m, 10 to 20 vol.% medium particles having a particle diameter of 3 to 6 mu m, and 10 to 20 vol.% fine particles having a particle diameter of 1 to 2 mu m, the spaces among the coarse particles being filled with the medium particles and fine particles. The composite material is excellent in flexibility and processability and is suitable for use as a radiation-shielding sheet material, weight member, vibration-damping material, balancing member, radiating material, and shot material.
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Inventors:
Kai Yasunao
Masahiro Yamauchi
Kenji Okamura
Masahiro Yamauchi
Kenji Okamura
Application Number:
JP2003532579A
Publication Date:
July 16, 2008
Filing Date:
September 30, 2002
Export Citation:
Assignee:
Nippon Tungsten Co., Ltd.
International Classes:
C08L25/04; C08K3/00; C08K3/08; C08K3/10; C08L7/00; C08L9/00; C08L19/00; C08L23/02; F16F15/02; F42B12/74
Domestic Patent References:
| JP2001187829A | ||||
| JP2001183100A | ||||
| JP10153687A |
Attorney, Agent or Firm:
Masu Kobori
Takato Tsutsumi
Takato Tsutsumi