An improved composite material which overcomes the moisture problem associated with other composite materials includes a protective waterproof coating of material such as a poly-para-xylylene over the composite material.

Protective coated composite material

Method of making a spherical bearing includes a bearing liner having a low-friction layer containing a resin matrix which includes therein a dispersion of self-lubricating particles. The particles include powdered or flock polytetrafluoroethylene particles and grahite fibers.

Method of making a self-lubricating bearing

An amorphous hydrated metal oxide primer for fibers incorporated into fiber reinforced polymeric matrix composites result in composites having wet strength retention The layer of amorphous hydrated metal oxide is formed by depositing on the fiber and subsequent hydrolysis of a layer of M x OR y where x is 1, y is 3 or 4, M is any metal capable of forming a stable alkoxide and R is an organic radical Fiber reinforced polymeric matrix composites are preferably made by applying a layer of M x OR y to the fiber where x is 1, y is 3 or 4, M is any metal capable of forming a stable alkoxide and R is an organic radical The fiber having a layer of metal alkoxide is exposed to moisture and a temperature of about 25° C to about 125° C, impregnated with a resin and stacked in a mold The stacked impregnated fibers are then pressed with optional heat resulting in a composite having wet strength retention

Amorphous hydrated metal oxide primer for composite fibers

A method for manufacturing a composite material which includes carbon material in a matrix metal by first applying tetraisopropyltitanate to the carbon material so as to wet it, next drying the carbon material which is wetted with the tetraisopropyltitanate, and then combining the carbon material with the matrix metal. This drying may be done by heating up the carbon material which is wetted with the tetraisopropyltitanate to a temperature of 50° C. to 200° C. in the atmosphere. The tetraisopropyltitanate may be dissolved in ethanol when it is being applied to the carbon material. The matrix metal may be a metal selected from the group consisting of aluminum, magnesium, aluminum alloy, and magnesium alloy.

Method for making carbon/metal composite pretreating the carbon with tetraisopropyltitanate

PROCEDE POUR LE TRAITEMENT DE SURFACE DE FIBRES INORGANIQUES POUR LE RENFORCEMENT DU TITANE OU DU NICKEL. CE PROCEDE CONSISTE A ENDUIRE LA SURFACE DES FIBRES INORGANIQUES AVEC UNE SOLUTION AQUEUSE OU UNE SOLUTION D'UN SOLVANT ORGANIQUE CONTENANT UN TITANATE, UN BORATE ET UN HYDROXYDE DE TETRALKYLAMMONIUM, ET A EXPOSER A UN TRAITEMENT THERMIQUE LES FIBRES INORGANIQUES AINSI ENDUITES, A 1300-1700C DANS UNE ATMOSPHERE INERTE OU NON OXYDANTE. L'INVENTION CONCERNE EGALEMENT LE TITANE OU LE NICKEL AINSI RENFORCE.

Procede pour le traitement de surface de fibres inorganiques pour le renforcement du titane ou du nickel

Graphite fibers exhibiting an enhanced ability to bond to a matrix material (e.g., a thermosetting resinous material or a metallic material) are produced wherein a film of amorphous carbon in intimate association with titanium is provided upon the surface of the same. A predominantly graphitic carbonaceous fibrous material is coated with a film of a dihydropyridacene polymer in intimate association with a hydrolyzable organotitanium compound, the organotitanium compound hydrolyzed to form titanium dioxide, and the polymer portion of the film carbonized to a predominantly amorphous form. Composite articles which incorporate the carbon fibers produced by the present process exhibit improved physical properties, such as an improved interlaminar shear strength.

G Ferment

Papers

Surface modification of graphite fibers