Composite materials with lubricating properties, process for the

Details Composite materials with lubricating properties, process for the Composite materials with lubricating properties, process for the

1990-11-01

1991-12-17

Wendtland, Richard W.

Ammunition and explosives

Cartridges

Wear reducing additive for barrel

F42B 524

Patent

active

050726722

ABSTRACT:
The invention relates to a composite material with lubricating properties consisting of a solid polymeric matrix such as polystyrene or polymethyl methacrylate containing between 20 and 85% by weight of a liquid oil with lubricating properties, such as a silicone oil.
The material according to the invention is obtained by polymerization of an emulsion of the said oil in a monomer such as styrene or methyl methacrylate monomer in the presence of a surface-active agent which is a two- or three-block block copolymer in which one repeat unit is compatible with the said monomer.
The materials according to the invention are used to form antierosive components for ammunition intended for barrel weapon systems and in particular wads (8) for shells (1).

REFERENCES:
patent: 1189011 (1916-06-01), Smith
patent: 3392670 (1968-07-01), Picard
patent: 3426684 (1969-02-01), Jacobson et al.
patent: 3429261 (1969-02-01), Goldstein
patent: 3877374 (1975-04-01), Cook
patent: 4098193 (1978-07-01), Schroeder
patent: 4203364 (1980-05-01), Dobbs
patent: 4282813 (1981-08-01), Sterbutzel
patent: 4334477 (1982-06-01), Axelrod et al.
patent: 4858534 (1989-08-01), Wallace
patent: 4994203 (1991-02-01), Lefumeux et al.

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