LAMINAR COMPOSITE MATERIAL AND AN ITEM MADE OUT OF IT Russian patent published in 2004 - IPC

FIELD: aircraft industry and transport engineering industry; production of laminar composite materials.

SUBSTANCE: the invention is dealt with production of the laminar hybrid aluminum-polymeric composite materials used for production of basic components of the aircraft airframe as well as for coverings, floors and partitions of cargo compartment and also for different items of transport engineering industry. The offered laminar composite material consists of alternating sheets of an aluminum alloy and layers of glass-fiber-reinforced plastic composed of external and internal monolayers based on thermosetting binding agent and reinforcing filler. The material additionally contains the elastic polymeric layers located between sheets of an aluminum alloy and layers of glass-reinforced plastic. At that the external monolayers of the glass-reinforced plastic contain a glass-wool blanket as an of reinforcing filler, and the internal monolayers contain unidirectional glass fibers. The elastic polymeric layer is made on a base of resol type phenolic resins and high-molecular rubber of 20-100 microns thick with a relative elongation at shift of 100-250 %. The technical result of the invention is an increase of durability to local mechanical shock effects. Shock resistance of the material is increased by 20-30 %.

EFFECT: the invention ensures an increase of the material shock resistance by 20-30 %.

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