High-density composite material

Details High-density composite material High-density composite material

2007-12-04

2007-12-04

Mulcahy, Peter D (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S081000, C524S401000

Reexamination Certificate

active

10490493

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 μm, 10 to 20 vol. % medium particles having a particle diameter of 3 to 6 μm, and 10 to 20 vol. % fine particles having a particle diameter of 1 to 2 μm, 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.

REFERENCES:
patent: 5276080 (1994-01-01), Oku
patent: 5908884 (1999-06-01), Kawamura et al.
patent: 6576697 (2003-06-01), Brown, Jr.
patent: 10-153687 (1998-06-01), None
patent: 2001-183100 (2001-07-01), None
patent: 2001-187829 (2001-07-01), None

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