Abstract: A thermally stable ceramic and/or metal coated carbonaceous linear fiber batting, fiber tow, yarn or fabric which maintains some degree of stability in the presence of various concentrations of oxygen at elevated temperatures.

Abstract: A thermally stable ceramic coated carbonaceous fiber batting, fiber tow, yarn or fabric which maintains loft, has some degree of resiliency and some degree of stability in the presence of various concentrations of oxygen at elevated temperatures said fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio greater than 10:1.

Abstract: A method for impregnating a strand of filaments during the strand manufacture with thermoplastic or thermoset polymer powder particles is disclosed. The method includes the steps of forming a strand of filaments, keeping the filaments separate, impregnating the filaments with an aqueous slurry containing the powder particles, and drying the filaments to remove the water and produce a strand impregnated with powder particles. The powder particles are present on the strand in an amount of between about 5 to 50 weight percent based on the weight of the impregnated strand. Glass fibers coated with the slurry according to the process of this invention are suitable for impregnation with thermoplastic powders.

Abstract: An oxide barrier coating for reinforcing fiber is provided with a preselected microstructure and thickness through control of the concentration of metal salt in heat decomposable form as a precursor of metal oxide. In one form, the salt is a metal oxyhalide salt such as zirconium oxyhalide or halfnium oxyhalide. Fibers, such as ones of alumina, aluminasilicate or silicon carbide, having the coating of the invention are especially useful as reinforcing fibers for reinforced ceramic matrix composites.

Abstract: A fiber-reinforced metal comprising glass fibers and a matrix metal, said glass fibers having a nitrogen content of at least 8 atomic %. The fiber-reinforced metal has a high tensile strength and elasticity.

Abstract: The material is formed by a fibrous reinforcement constituted by a texture of carbon or silicon carbide fibers and a matrix deposited by chemical vapor infiltration through the porosity of the fibrous fabric and containing free carbon co-deposited with the zirconia, the weight proportion of free carbon co-deposited with the zirconia in the matrix being preferably between 0.1 and 10%. In comparison with pure or partly stabilized fritted zirconias, the composite zirconia according to the invention exhibits an improved tenacity, preservation of the mechanical strength and dimensional stability under high temperatures, as well as an improved density, without the introduction of the fibrous reinforcement reducing too excessively the properties of heat insulation and resistance to oxidation.

Abstract: An aqueous size composition for glass fibers is disclosed which includes a coupling agent, a binder or film former material and a thermoplastic polymer resin powder, wherein said composition is applied to the glass fiber surfaces during the fiber forming process. A rheology modifier material may be added to the size composition. One embodiment of the composition includes an organosilane coupling agent, a polyethylene oxide binder material and a polyamide thermoplastic polymer resin.

Abstract: Fibrous material is coated with boron nitride and a silicon-wettable material, the coated fibrous material is admixed with an infiltration-promoting material which is at least partly elemental carbon and the mixture is formed into a preform which is infiltrated with a molten solution of boron and silicon producing a composite containing boron nitride coated fibrous material.

Abstract: A white blackout fiber comprising a core, a sheath, said sheath surrounding said core, said core including a light blocking substance therein that substantially prevents the transmission of light therethrough, the light blocking substance being in an amount equal to 0.005-0.01 weight % of the core, a whitening agent in the core in an amount equal to 3-10% of the weight of the core, and a whitening agent in the sheath in an amount equal to approximately 0.0-4.0 weight % of the sheath.

Abstract: An electrically conductive shaped article such as a film or fibrous material and a process for preparing the same from a polybenzimidazole shaped article is provided. The polybenzimidazole article is first contacted with cuprous ions to produce a cuprous ion-impregnated material, and subsequently is subjected to a sulfiding agent capable of sulfiding cuprous ions, and preferably washed, to produce a polybenzimidazole shaped article having covellite copper sulfide in association therewith. Also provided are electrically conductive composites and a process for preparing the same by incorporating fibrous material prepared in accordance with the process within a substantially continuous polymeric matrix.

Abstract: An electrically conductive article comprising a dielectric substrate, such as a fabric, e.g., fiberglass fabric, and an electrically conductive inorganic nickel sulfide layer which is adherent to the substrate and has good electrical conductivity and stable electrical characteristics at high temperature. Such article is produced by contacting a porous dielectric substrate, such as fiberglass fiber, with an aqueous solution containing a soluble nickel salt, such as nickel sulfate, and a sulfur donor, such as sodium thiosulfate, drying the resulting wet substrate at ambient temperature, and heating the resulting substrate at elevated temperature of about 100.degree. C. to about 400.degree. C. to form an electrically conductive layer of nickel sulfide on the substrate.

Abstract: Stain-resistant, polyamide textile substrates treated with compositions comprising hydrolyzed ethylenically unsaturated aromatic/maleic anhydride polymers and processes for their preparation. The treated substrates possess stain resistance that is as good as or better than do previously known stain-resist treated substrates but do not suffer from yellowing to the extent that previously known treated substrates do.

Abstract: A structural material comprising a plurality of irregularly arranged members contacting one another with the points of contact forming junctions, the members being coated, which coating holds the members together to form a strong integral structural material and methods for producing same.

Abstract: Disclosed is a shaped article comprising a continuous oriented polymer matrix having dispersed therein microbeads of a polymer which are at least partially boredered by void space, the microbeads being present in an amount of about 5-50% by weight based on the weight of said oriented polymer, said void space occupying about 2-60% by volume of said shaped article. Preferably, the microbeads are cross-linked to an extent they will be resilient and elastic at the orientation temperature, and are coated with a slip agent. The shaped article is preferably in the form of a sheet, fibers, or other molded article, preferably has a relatively low specific gravity and whiteness.

Abstract: Single crystal whiskers of carbides, nitrides and carbonitrides of Ti, Zr, Hf, V, Nb, Ta, and W coated with one or more layers of different carbides, nitrides, or carbonitrides of Ti, Zr, Hf, Nb, Ta, or W or oxides of Al, Zr, or Hf. A process for the whisker production is also disclosed.

Abstract: The strength of the bond between a metal and vulcanized rubber may be increased by a bonding agent containing at least one organic cobalt compound and at least one boric acid ester.

Abstract: Non-porous metal oxide-coated carbonaceous fibers capable of withstanding chemical degradation at temperatures above 1600.degree. C. and that are particularly useful in the construction of ceramic or metal composites without carbon-carbide hypereutectic formation or micro-cracking in metal and ceramic matrix composites, respectively, but with good interfacial bonding, thereby allowing the same to be favorably employed in space reentry vehicles, heat shields, high-performance aircraft, internal combustion engines, and the like.

Abstract: An electrical wire in which a core of stranded, insulated conductors is first coated with a thermoplastic resin layer having of melt index of at least 0.2 and then extrusion coated with a urethane resin layer. The urethane resin layer may be radiation cured.

Abstract: A method of manufacturing a superconductive coil by means of explosive compaction. A wire formed of silver having a superconductive oxide powder charged therein is formed into a coil. The coil is placed within a cylindrical vessel, into which a pressure medium is charged. Explosive compaction is carried out to cause the compaction of the coil through the cylindrical vessel and the pressure medium and hence densify the coil. The compacted coil is heat-treated in an air or oxygen atmosphere. The resulting superconductive coil possesses high critical electric current density. Advantageously, the coil is mounted on a mandrel axially extending therethrough, and placed together with the mandrel into the cylindrical vessel, before explosive compaction.

Abstract: A method of producing normal-metal-clad superconductive oxide wire, tape and the like is disclosed. The method comprises forming an intermediate body by surrounding a quantity of the oxide powder (e.g., Ba.sub.2 YCu.sub.3 O.sub.6.9) with an appropriate normal metal jacket, reducing the cross section of the intermediate body by any appropriate technique (e.g., drawing or rolling), and heat treating the elongated body such that substantial sintering of the powder results, and such that, after completion of the heat treatment, the sintered oxide has a composition that is associated with superconductivity in unclad bulk samples of the oxide. The latter condition requires that at least the portion of the cladding that is in contact with the oxide powder is substantially inert with respect to oxygen and the oxide under the conditions of the heat treatment. Silver is the currently preferred inert normal metal. Exemplarily, Ag can be used to provide a diffusion barrier with other normal metal (e.g.

Abstract: High strength composite fibers are disclosed comprising a core, e.g., of carbon or the like, and a thin and uniform, firmly adherent electrically conductive layer of an electrodepositable metal, e.g., of nickel or the like. The composite fiber can be produced by electrodeposition from an electrolyte onto the core but the procedure must use external voltages high enough both (i) to dissociate the metal at the core and (ii) to nucleate the metal through the boundary layer into direct contact with the core. Such composite fibers are chopped to shortened lengths to provide chaff, which is effective as a radar countermeasure.

Abstract: A composition useful in the manufacture of cable comprising:(i) a thermpolastic polymer;(ii) a metal hydrate flame retardant compound; and(iii) a blowing agent, which decomposes at a temperature in the range of about 160.degree. C. to the decomposition temperature of the thermpolastic polymer.

Abstract: A covered lead wire for vehicles, comprising a cover comprising a composition containing;(A) 100 parts by weight of polyvinyl chloride resin;(B) 0.1 part to 10 parts by weight of polyorganosiloxane;(C) at least 30 parts by weight of a plasticizer; and(D) at least 1 part by weight of a stabilizer.The present covered lead wire can achieve good abrasion resistance and scrape resistance even with reduced thickness of the cover, and can meet the recent demands for the weight-saving and improvement of wiring workability.

Abstract: An electrical conductor is provided with an electrical insulation (11) surrounding the conductor (10) and a surrounding protective layer (12) which protects the insulation against degradation caused by corona. The protective layer consists of an organic polymer containing at least 10 percent by volume of a powdered filler in the form of chromium oxide, iron oxide, or a mixture of chromium oxide and iron oxide. The filler preferably has an intrinsic resistivity of 10.sup.4 -10.sup.8 ohm m. The thickness of the protective layer is preferably smaller than the thickness of the underlying insulation (11) and its resistivity preferably exceeds 10.sup.10 ohm m. The conductor is used, among other things, in windings and coils for electrical machines.

Abstract: A metal-coated substrate, e.g., of glass, ceramic, or a hydroxy-functionalized material, wherein the improvement comprises a polysilicate, titania, or alumina interlayer between the substrate and the metal coating. The interlayer may have a porous microstructure, e.g., a polysilicate interlayer with an average pore size on the order of 50-150 Angstroms.Such articles, e.g., in the form of metal-coated fibers, may suitably be employed as reinforcing media in material composites having utility in structural applications, such as EMI shielding elements.Also disclosed is a corresponding method for forming a metal coating on a substrate by the provision of an interlayer of the above type. The interlayer may suitably be formed by applying to the substrate a sol gel dispersion of the polysilicate, titania, or alumina material, followed by drying of the applied dispersion.

Abstract: A composite is produced comprised of ceramic oxide fibrous material which is coated with a noble metal and disposed in a ceramic oxide matrix. The composite can be produced by contacting the coated fibrous material with matrix-forming oxide powder to form a compact and densifying the compact. Densification can be carried out by techniques such as sintering, isostatic pressing, and hot pressing. The composite can also be produced by forming the coated fibrous material into a preform having an open porosity and infiltrating the preform with a vapor of the matrix-forming material.

Abstract: Fibrous white electrically conductive material and a coating composition containing the same. The material is made from fiber of alkali titanateaM.sub.2 O.TiO.sub.2.bH.sub.2 Owherein M is alkali metal including Li, Na and KO<a.ltoreq.1/8.5O.ltoreq.bwhich is coated with tin oxide (2-500 parts by weight every 100 parts by weight of the fiber). The material is applied to paper, plastics or rubber and gives high electrical conductivity thereto.

Abstract: An electric transmission line comprises an electrically conductive line and a covering layer on the line being composed of a halogen-containing, flame-retarding, aromatic polyester of (A) an aromatic dicarboxylic acid or an ester-forming derivative thereof, (B) an aliphatic glycol or an ester-forming derivative thereof and (C) an ester-forming compound containing a halogen atom.

Abstract: Tubular, spheroidal, and helical lipid microstructures are individually clad with a metal coat deposited on the microstructures by an electroless plating bath. In metal cladding the microstructures, the surfaces of the lipid microstructures are sensitized by adsorption thereon of a catalytic precursor which enables metal from the electroless plating bath to deposit upon and adhere to the sensitized surface. The metal plate is electrically conductive and may also be magnetic. A composite material is produced by embedding the metal clad microstructures in a matrix of a polymer such as an epoxy or a polyurethane.

Abstract: Oxidation-resistant, electrolessly deposited metal coatings, e.g. of copper, can be provided on a variety of substrates such as fibers and films. Precursor substrates have nascent or actual clusters of catalytic metal with dimensions less than 100 nanometers, e.g. about 10 nanometers. Disclosed methods can produce electrically conductive, copper-coated PET or acrylic multifilament with a resistance of less than 20 ohms/meter.

Abstract: A radiation-resistant high molecular composition is disclosed, characterized in that, to the high molecular polymer, a halogenated acenaphtylene and/or condensates thereof represented by a following general formula [I] ##STR1## (wherein, X indicates a chlorine or bromine atom, a indicates 0 to 2, b indicates 1 to 6 and n indicates an integer not less than 1) and a diphenyl ether derivative represented by a following general formula [II] ##STR2## (wherein, R.sub.1 and R.sub.2 indicate any ones of hydrogen atom, alkyl, alkoxy, phenyl phenoxy, diphenyloxy and terphenyloxy group) and/or basic lead compound are formulated.

Abstract: Organopolysiloxanes with Bunte salt groups linked over carbon atoms are disclosed, as well as methods for the synthesis of these compounds by the reaction of organopolysiloxanes having epoxy groups with, in relation to the epoxy groups, equimolar amounts of Me.sub.2 S.sub.2 O.sub.3, in which Me is an alkali metal or an optionally substituted ammonium group. The compounds may be used for the permanent finishing of fibers or fiber products or for the treatment of hair.

Abstract: Electrically and/or thermally conductive reinforced compositions convertible to reinforced components are disclosed. The compositions comprise a polymeric material of little or no conductivity and high strength, metal plated composite fibers having a conductive semi-metallic core and a thin, firmly adhered layer of an electrodepositable metal coating on said core. The metal coated composite fibers will not loss their conductive coatings during normal processing and provide conductivity without reducing the physical properties of the polymeric material. The compositions of the invention are convertible to conductive components such as laminate prepregs, surface plys for laminates, conductive adhesives, conductive inks, and conductive elastomeric gaskets. The components can be incorporated in improved articles such as structural parts for transportation vehicles, printed circuit boards, lighting shields and molded articles.

Abstract: A high tenacity, high elongation, low shrinkage synthetic fiber is treated to enhance stiffness and interfilament coherency, then dusted with a release agent, resulting in a fiber, combined in multiple high denier bundles, which can be cut at high speed to suitable reinforcing lengths for use in reinforcing a resin matrix. The cut fiber can be used in bulk molding compounds (BMC), sheet molding compounds (TMC) and spray-up applications due to ease of cutting.

Abstract: Ceramic bodies having a balanced overall stress pattern in which are present individual stress zones of compressive and tensile stresses and the techniques for forming said bodies are disclosed. The bodies are formed by having slightly different compositional patterns from one zone to another whereby during cooling there is a differential volumetric expansion or contraction in one zone as compared to an adjacent zone. The volumetric expansion or contraction is caused by a material which undergoes a phase transformation during the cooling from the sintering temperatures utilized to sinter the ceramic body, whereby such phase transformation is accompanied by a volumetric change.

Abstract: A process for continuously coating a strand of continuous carbon filaments by means of a refractory carbide by reactive CVD deposition, which includes the step of causing the strand to travel under mechanical tension with a hermetic enclosure, simultaneously, introducing into the said enclosure a gas mixture consisting of hydrogen and of a volatile compound of an element capable of forming a refractory carbide; and heating the reaction mixture consisting of the strand and the gas mixture so that the formation of the carbide deposit on the filaments takes place by a chemical reaction between the carbon in these filaments and the gas mixture; and the reaction is self-regulated by the diffusion of carbon through the layer of carbide already formed.

Abstract: Temperature adaptable textile fibers are provided in which phase-change or plastic crystalline materials are filled within hollow fibers or impregnated upon non-hollow fibers. The fibers are produced by applying solutions or melts of the phase-change or plastic crystalline materials to the fibers. Cross-linked polyethylene glycol is especially effective as the phase change material, and, in addition to providing temperature adaptability, it imparts improved properties as to soil release, durable press, resistance to static charge, abrasion resistance, pilling resistance and water absorbency.

Abstract: The termite repellent and/or the rodent repellent is entrapped in cyclodextrin as a cyclodextrin inclusion compound.The termite repellent may be: for example, a copper compound, such as copper naphthenate, or cuprous oxide; an organic phosphorus insecticide, such as chlorpyrifos, phoxim (i.e., phenylglyoxylonitriloxime O,O-diethyl phosphorothioate), fenitrothion, or prothiophos (CAS No. 34643-46-4); carbamate insecticide, such as carbaryl; pyrethroids insecticide, such as permethrin, or furamethrin.The rodent repellent may be: for example, cycloheximide, i.e., naramycin; or organic tin compound, such as dibutyltin oxide, or dibutyltin laurate.The cyclodextrin inclusion compound of termite repellent and/or rodent repellent and glycitols are mixed with a covering material of the electric wire or cable.The chief ingredient of the covering material is a synthetic resin or synthetic rubber. The synthetic resin may be polyvinyl chloride, or polyethylene.

Abstract: A yarn having antimicrobial properties comprising a plurality of individual synthetic polymer filaments wherein at least one of the filaments but less than 20% of the total of the individual filaments in the yarn has a sufficient amount of antimicrobial activity to inhibit microbial growth in the entire yarn.

Abstract: A metal-coated substrate, e.g., of glass, ceramic, or a hydroxy-functionalized material, wherein the improvement comprises a polysilicate, titania, or alumina interlayer between the substrate and the metal coating. The interlayer may have a porous microstructure, e.g., a polysilicate interlayer with an average pore size on the order of 50-150 Angstroms.Such articles, e.g., in the form of metal-coated fibers, may suitably be employed as reinforcing media in material composites having utility in structural applications, such as EMI shielding elements.Also disclosed is a corresponding method for forming a metal coating on a substrate by the provision of an interlayer of the above type. The interlayer may suitably be formed by applying to the substrate a sol gel dispersion of the polysilicate, titania, or alumina material, followed by drying of the applied dispersion.

Abstract: Ceramic composite articles having high flexural and tensile strength are produced by introducing multiple layers of a ceramic matrix material onto a ceramic reinforcement fabric. Crack propagation in the resulting structure is inhibited by applying refractory interface layers intermediate successive ceramic matrix layers. Such ceramic composite articles are particularly useful for high temperature applications requiring a high degree of strength, such as rocket motor insulation and turbine blades, combustion chambers, and after burners for jet motors.

Abstract: A conductive fiber is made by an electroless plating process which is used in conjunction with a wet spinning process. The polymer must be catalyzed before the wet gel is collapsed. The resulting filament has a conductive region which is at least partially coincident with the polymer structure.

Abstract: A thermal insulation is formed by simultaneously spraying ceramic fibers and a binder at a surface to be covered. An aqueous binder is prepared prior to application to the fiber during the spraying operation. The binder includes an organic component which provides necessary wet and green adhesion to the substrate surface and wet and green cohesion to the newly formed lining prior to firing of the sprayed-on layer. The binder also includes an inorganic component which functions at and after exposure to a high temperature to secure the ceramic fibers to the substrate and to one another. Drying and firing of the layer develops strength in the inorganic binder. Known ceramic fibers such as alumina-silica amorphous fibers, alumina-silica-zirconia fibers, polycrystalline mullite fibers, alumina fibers, mineral fibers, or combinations thereof, and the like may be employed. The fiber may be precoated with the organic binder.

Abstract: Elongated granules of reinforcing fibers extending generally parallel to each other longitudinally of the granule each of said fibers being substantially surrounded by a thermally stable, film forming thermoplastic adhesive comprising(a) a poly(C.sub.2 -C.sub.6 alkyl oxazoline) in combination with(b) a poly (vinylpyrrolidone), provide complete dispersion of the fibers in thermoplastics during an injection molding cycle, conserving physical properties and providing significantly better EMI shielding than prior art extruder compounded resin/fiber blends.

Abstract: The present invention relates to a polymer composition exhibiting high temperature oil resistance, while having improved modulus and tensile strength, as well as a novel insulated electrical conductor employing such material, said material comprising a polymeric constituent selected from the group consisting of copolymers of ethylene and propylene, polymers of same with other polymerizable materials, and mixtures of the foregoing, said constituent being in intimate mixture with a fully calcined aluminum silicate clay filler containing less than about 0.5 percent by weight water (based on the weight of the clay) having an average particle size less than 1 micron with at least about 80 weight percent of the particles having size finer than 2 microns and with at least about 10 weight percent of the particles being more finely divided than 0.5 microns.

Abstract: A coaxial cable is provided having a ribbon inner conductor surrounded by a dielectric and a circumferential conductor. The coaxial cable may be microminiature comprising a very thin ribbon strip conductor from between 5 to 15 .mu.m thick and from 150 to 200 .mu.m wide, having a surrounding foamed dielectric or parylene applied thereon by a vapor plasma process and an outer conductor of an adhering high conductivity metal vacuum deposited on the dielectric. Alternately, the foam dielectric embodiment may have a contiguous parylene coating applied adjacent the inner conductor or the outer conductor or both. Also, the cable may be fabricated by forming a thin ribbon of strip conductive material into an inner conductor, applying thereabout a dielectric by spraying on a solution of polystyrene and polyethylene and then vacuum depositing and adhering high conductivity metal about the dielectric.

Abstract: Elongated injection molding granules comprising fibers, which have a core and at least one relatively thick, uniform and firmly adherent, electrically conductive layer comprising on said core bonded with a thermally stable thermoplastic adhesive.

Abstract: Disclosed is a magnet wire composition comprising the reaction product of a polyamide resin, a titanate catalyst, and a solvolytic agent admixed with a blocked polyisocyanate and hydroxylated polyester. Also disclosed is a method of applying such magnet wire enamel to a magnet wire substrate and additionally disclosed is a method for making such magnet wire enamel.

Abstract: High temperature insulated electrical wiring products suitable for use under service temperature classifications of at least 90.degree. C. The product comprises an electrical conductor and a polyvinyl chloride insulation covering on the conductor. The insulation comprises polyvinyl chloride resin having an inherent viscosity within the range of 1.0-1.1 and a polybasic aromatic ester plasticizing system in which the predominant ester component is a dialkyl phthalate ester. Each of the alkyl groups of the ester contains at least 11 carbon atoms. In addition, the insulation contains a higher than normal amount of antioxidant. The insulation should contain at least about 1.5 percent bisphenol A based upon the dialkyl phthalate ester. The plasticizer system may contain only dialkyl phthalate ester or it may contain minor amounts of trimellitate ester.

Abstract: The present invention relates to a polymer composition exhibiting high temperature oil resistance, while having improved modulus and tensile strength, as well as a novel insulated electrical conductor employing such material, said material comprising a polymeric constituent selected from the group consisting of copolymers of ethylene and propylene, polymers of same with other polymerizable materials, and mixtures of the foregoing, said constituent being in intimate mixture with from about 1 to about 150 parts by weight (per 100 parts by weight of polymer) of processing oil, and a calcined aluminum silicate clay filler containing less than about 0.5 percent by weight water (based on the weight of the clay) having an average particle size less than 1 micron with at least about 80 weight percent of the particles having size finer than 2 microns and with as much as 10 weight percent of the particles being more finely divided than 0.5 microns.