Composite materials with lubricating properties, process for their manufacture and antierosive components for a barrel weapon system which consists of these materials
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United States of America Patent
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Dec 17, 1991
Issued Date -
N/A
app pub date -
Nov 1, 1990
filing date -
Dec 18, 1987
priority date (Note) -
Expired
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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).
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