Abstract: A process for the preparation of a laminate of at least one metal layer and at least one layer of flexible graphite includes producing a non-detachable bond between the graphite and the metal without using a mechanical anchoring device and without using a known adhesive. Initially, a contact surface-active agent from the group including organosilicon compounds, perfluorinated compounds and metal soaps is applied in a thin layer to at least one of the surfaces to be bonded. Then the surfaces to be bonded are brought into contact and bonded together by the action of pressure and heat.

Abstract: A chemical solder is described that includes an organometallic complex or compound which thermally degrades within a predetermined temperature range to a metal and volatile compounds. The solder also includes a polymeric matrix that decomposes within the same temperature range to volatile fractions, thereby leaving only the metal. A method for bonding first and second bodies is disclosed wherein a chemical solder, as above-described, is disposed between the first and second bodies and heat is applied to elevate the solder to the predetermined temperature range to thermally degrade the organometallic compound and to decompose the polymeric matrix. The remaining metal bonds the first and second bodies.

Abstract: An improved fiber reinforced glass composite includes a carbon fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. Graceful failure can be obtained when the carbon fibers are highly graphitized.

Abstract: An improved fiber reinforced glass composite includes refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.

Abstract: A strip of gray reflective aluminum protected by a conversion coating and a light-permeable fluoropolymer coating which is non-adhesively interstitially mechanically bonded to the microscopic irregularities of the conversion coated surface. The highly reflective strip may be substituted for polished stainless steel and/or bi-metal and used under comparably aggressive conditions for a prolonged period without deleteriously affecting the initial D/I (distinctness of reflected image) of the shaped strip. The strip of arbitrary length may be shaped in rolling dies so that at least a portion of the strip has a radius of less than 10 mm without damaging or separating the fluoropolymer coating. The specific steps of the claimed process require starting with a bright-rolled clean strip which is conversion coated to carry a thin metal compound coating. After rinsing and drying, the reflective surface is coated with the fluoropolymer while maintaining at least 80% D/I.

Abstract: An apparatus for forming paper blocks installable in offices to form paper blocks out of office-use paper such as computer printer paper, etc. including a treatment chamber, paper feeder and an adhesive apply device. Used and waste paper is fed into the treatment chamber by the paper feeder while being coated with adhesives by the adhesive apply device, and inside the treatment chamber, the paper with the adhesives coated thereon are pressed by a pusher or by air against the bottom of the chamber, thus forming firm paper blocks solidified by the adhesives.

Abstract: An improved fiber reinforced glass composite includes a carbon-coated refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group. Graceful failure can be obtained after exposure of the composites to temperatures up to 1300.degree. C.

Abstract: A ceramic adhesive comprises a ceramic matrix formed from a mixture of a metallic oxide and an alkali silicate in water, and silicon carbide whiskers dispersed within the ceramic matrix. Further, a ceramic adhesive comprises a ceramic matrix formed from a mixture of magnesium oxide in the range of about 50% to about 80% by weight and sodium silicate in water in the range of about 50% to about 20% by weight, and silicon carbide whiskers dispersed within said ceramic matrix, the whiskers being in the range of about 3% to about 25% by weight of the ceramic matrix. A ceramic adhesive of the present invention is particularly useful in mounting and bonding in-cylinder sensors to steel internal engine parts.

Abstract: A single recording side magneto-optic disk has improved dampening characteristics for rotation at high speeds such as 3,000 rpm or greater. A dampening layer is secured to the recording side. The dampening layer includes a film of at least approximately 102 micrometers in thickness attached to the disk by an adhesive layer of at least 25.4 micrometers in thickness.

Abstract: An aluminum fluoropolymer laminate and a method for making such a laminate which includes conversion coating the aluminum and bonding the fluoropolymer onto the conversion coated aluminum is described.

Abstract: A new class polyimide and polyimide precursors based on diaryl oxyalkylene diamines, such as 1,3-bis[4-aminophenoxy]-2,2-dimethyl propane, a process for their preparation and their use as the continuous phase for the manufacture of composites and composite laminates reinforced by reinforcing agents such as carbon fibers, Kevlar.TM., and other similar high strength reinforcing agents. The polyimides and molecular composites obtained from the diamines according to the invention show thermoplastic properties, excellent flex fatigue and fracture resistance, and excellent thermal and oxidative stability.

Abstract: Provided is a method for laminating PBZT/fusible sol-gel glass microcomposite film layers by applying an adhesive of fusible sol-gel glass to the bonding surfaces of such films and compressing the film layers and the so-formed adhesive layer therebetween, at sufficient temperature and pressure to laminate the film and adhesive layers together. The sol-gel glass infiltrant and adhesive may be of the same or different materials. Desirably, the bonding surfaces of such films are roughened before application of the adhesive layer therebetween. The invention also includes the laminates prepared by the above method which laminates exhibit good coherent bonding between layers, high tensile strength and good interlaminar strength between layers for fabrication into durable high-strength space-age structures.

Abstract: A method for bonding a first ceramic element and a second ceramic element utilizes a silver powder paste composed of silver particles dispersed in a volatile vehicle. A film of the paste is applied and dried onto a faying surface of each element. The elements are assembled with the films in contact and heated to sinter the silver particles into an integral silver layer that is bonded to the faying surfaces, thereby bonding the elements together. The method is particularly well suited to manufacturing a stripline filter, wherein the sintered layer not only bonds the ceramic elements, but also forms a metallic feature, such as a resonator, of the filter.

Abstract: Corrugating adhesive compositions comprising soluble high amylose starch as the carrier starch may be prepared as a one-piece, dry mixture that can be dispersed in water at 25.degree. to 55.degree. C. and applied to paperboard without further preparation steps. The corrugating adhesives may be prepared without alkali, and used at any pH.

Abstract: In an aluminum nitride structure, a plurality of aluminum nitride regions having different purities are integrally formed to satisfy a predetermined positional relationship, and neighboring regions are brought into direct contact with each other to form an abrupt junction therebetween. Therefore, the aluminum nitride structure has anisotropy in physical properties such as a thermal conductivity, a light transmittance, and a strength.

Abstract: A method of fabricating a multi-layered, co-fired, ceramic-on-metal circuit board utilizes a bonding layer of glass. The glass has a coefficient of thermal expansion not greater than that of the metal base. The glass of the bonding layer has a softening point below that of the glass in the multi-layer ceramic so that the glass of the bonding layer flows and bonds to the metal to minimize the lateral shrinkage of the multi-layered ceramic.

Abstract: An improved fiber reinforced glass composite includes a carbon-coated refractory fiber in a matrix of a black glass ceramic having the empirical formula SiCxOy where x ranges from about 0.5 to about 2.0, preferably 0.9 to 1.6 and y ranges from about 0.5 to 3.0, preferably 0.7 to 1.8. Preferably the black glass ceramic is derived from cyclosiloxane monomers containing a vinyl group attached to silicon and/or a hydride-silicon group.

Abstract: A process for applying heat shrink film to containers comprising the steps of a) coating at least a portion of a heat shrinkable but unshrunken film segment with a reactive hot melt polyurethane adhesive having a free isocyante content greater than 2% and a viscosity less than 3000 cps at 225.degree. F.; b) applying the film to the longitudinal surface of the container; and, c) subjecting the container to heat to shrink the film onto the container so as to permanently affix it thereto.

Abstract: Disclosed is an inorganic adhesive composition comprising (a) an aqueous silica sol and (b) an inorganic refractory powder along with one or more material selected from (c) a fine powdery silica, (d) an aqueous alkali silicate solution and (e) a silane coupling agent. After hardening, the hardened product of the composition displays noticeably improved adhesion strength and electric insulating property.

Abstract: A precisely spaced stack of substrate layers comprises a plurality of substrate layers disposed one above another in a stacked configuration and having a glass layer coating on one of each pair of adjacent substrates, the glass layer having a thickness such that the sum of the thicknesses of the glass layer and the substrate to which the glass layer is fused is approximately equal for substantially all of the substrate layers. A polymer adhesive is disposed intermediate the glass layer and a substrate layer such that adjacent substrate layers are bonded together. By controlling the height of each pair of substrate and glass layers, a precisely spaced and strongly bonded stack of substrate layers is formed.

Abstract: A method of forming an immersion nozzle for continuous metal casting. The method includes the step of forming a porous refractory nozzle having channels formed in the outer surface thereof. The channels are jacketed with a positionally stable barrier. A metallic housing is formed to have an inner surface dimensioned to conform to the outer profile of the refractory nozzle and an orifice through one side. The refractory nozzle is inserted into the metallic housing with a cementitious mortar disposed therebetween and with the orifice aligned with one of the channels. The mortar then is dried to secure the refractory nozzle to the metallic housing.

Abstract: A latex adhesive made from a polymer such as a ethylene/vinyl acetate or styrene/butadiene copolymer, a low-boiling alcohol, such as isopropanol, a non-crystallizing polyhydric alcohol such as sorbitol, and preferably a cellulose thickener. The latex adhesive dries so quickly that an adhesively edge-padded stack of paper sheets formed using the adhesive can be cut by hand into tablets within about 30 minutes. These tablets do not leave an upstanding ridge of adhesive when a number of the sheets are torn off.

Abstract: A method for manufacture of a bulk-type magnetic head capable of performing a frame recording operation. In sequential steps, coil grooves and track-width limit grooves substantially orthogonal thereto are formed in respective butt surfaces of a pair of magnetic core blocks, and then head-element division slits are formed between the track-width limit grooves. Subsequently the magnetic core blocks are joined to be integral with each other, and notches are formed in the core blocks in such a manner as to extend from lateral surfaces of the core blocks on the reverse side with respect to the butt surfaces thereof and to reach at least the coil grooves adjacently to the head-element division slits, whereby the in-line precision of magnetic gaps can be enhanced and high productivity is attained in manufacture of the magnetic head.

Abstract: A bookbinding cover has a front cover, a rear cover and a back plate which is connected to the front and rear cover, and a hot-melt adhesive layer applied to the back plate. The adhesive layer has a multi-layer structure, and the softening point of each of the layers which form the adhesive layer decreases with an increase in distance from the back plate. The bookbinding cover permits simple bookbinding with sufficient strength for a short time.

Abstract: A method of bonding a sheet of metal such as copper on a substrate of aluminum nitride, the method comprising the following steps known per se: i) growing a layer of alumina on the aluminum nitride substrate by means of heat treatment; and ii) placing the sheet of metal on the alumina layer and then bonding them together; the method being wherein alumina-growing step i) is performed under a controlled oxidizing atmosphere which is free from moisture.

Abstract: A method for joining shapes of ceramic materials together to form a unitary ceramic structure. In the method of the invention, a mixture of two or more chemical components which will react exothermically is placed between the surfaces to be joined, and the joined shapes heated to a temperature sufficient to initiate the exothermic reaction forming a joining material which acts to bond the shapes together. Reaction materials are chosen which will react exothermically at temperatures below the degradation temperature of the materials to be joined. The process is particularly suited for joining composite materials of the silicon carbide-silicon carbide fiber type.

Abstract: The present invention provides a refractory coating composition comprising:(i) 100 parts by weight of a hydraulic cement,(ii) 3 to 50 parts by weight of a re-emulsion type powdery resin,(iii) 50 to 600 parts by weight of a mixture of 15 to 85% by weight of aluminum hydroxide powder and 85 to 15% by weight of carbonate decomposable at a temperature of 300.degree. to 1000.degree. C., and(iv) 20 to 300 parts by weight of a lightweight aggregate having open cells at a ratio of at least 50% based on the total cells.

Abstract: This invention provides a heat-resistant voice coil of H class in heat-resistance standard, which is characterized in that an electrically insulated adhesive paint applied onto both a bobbin and conductor wire is mainly consisted of a mixture comprising all aromatic polyamide resin and a hardening agent composed of aromatic polyamic acid. This invention further provides a method of manufacturing such a heat-resistant voice coil, wherein the conductor wire coated with the paint is wound around the bobbin preliminarily coated with the paint in a semihardened state, while applying a non-water polar solvent onto the bobbin.

Abstract: A stable Tl.sub.2 O.sub.3, V.sub.2 O.sub.5, P.sub.2 O.sub.5 glass composition for a die attach paste requiring no resin and having a glassy edge temperature of below about 350.degree. C.

Abstract: A protective material comprising a layer of vinylidene chloride or copolymer of vinylidene chloride between two layers of polyethylene to provide protection against both permeation and breakthrough. A cloth backing or inner layer can be added to this material for comfort. The material can be modified with a reinforcing material such as fiberglass or scrim cloth. Inclusion of an indicator substance between layers, or impregnated in a layer, provides further protection by warning the user of permeation and breakthrough. This material can be utilized in protective clothing such as gloves, as enclosures for instruments and equipment, as a container, and in other applications.

Abstract: A method of bonding metallic wires, such as strain gages, thermocouples, etc., directly onto ceramic components, such as silicon nitride or silicon carbide turbine parts, by means of a refractory cement formed from a mixture of water, sodium silicate, and a ceramic powder, preferably of a composition similar to the underlying ceramic component. Several thin layers of the mixture are applied and cured so as to provide a strong bond having good thermal shock resistance for testing at typical gas turbine operating temperatures, such as 2500.degree. F. or above.

Abstract: A fast-setting magnesium phosphate one-component adhesive/grout is used to bond tiles, e.g. ceramic tiles, to a substrate, e.g. sheet-rock. The grout comprises an activator prepared by e.g., mixing diatomaceous earth with at least a sufficient amount of an ammonium phosphate solution to form a paste then heating the paste to coat the pores of the diatomaceous earth and result in a dry solid which is then milled to yield the activator, magnesium oxide, diammonium phosphate, boric acid, and sufficient water to form a paste. This grout is applied to the surfaces to be bonded which are then brought together to form a composite which is allowed to set at ambient temperatures forming a durable bond in about three hours.

Abstract: A semiconductor die attach system adapted for attaching a semiconductor die to a substrate is provided. A metallic buffer component is disposed between the substrate and the semiconductor die to withstand stresses created from thermal cycling of the substrate and the die. The metallic buffer component is sealed to the substrate with a layer of solder. The layer of solder is provided to dissipate stresses created by thermal cycling of the substrate and the die. The die is sealed to the buffer with a silver-glass adhesive.

Abstract: A method of repairing a defect in or joining fired or unfired ceramic bodies by using a paste composed of a wet undried metal oxide gel consisting of Al.sub.2 O.sub.3, SiO.sub.2, MgO, ZrO.sub.2, Y.sub.2 O.sub.3, and mixtures thereof and joining the paste. A reinforcement material consisting of SiC, C, SiO.sub.2, Al.sub.2 O.sub.3, ZrO.sub.2, Y.sub.2 O.sub.3, MgO and mixtures thereof may be included in the paste.

Abstract: A bonding composition comprising a metal oxide melt comprising (a) CaO, (b) SiO.sub.2 and/or Al.sub.2 O.sub.3, and (c) a metal oxide selected from TiO.sub.2, ZrO.sub.2, Cr.sub.2 O.sub.3, HfO.sub.2, Nb.sub.2 O.sub.3 and Ta.sub.2 O.sub.5 is melt-bonded on the surface of a ceramic material, and the ceramic material is bonded to an adherent, if necessary through at least one layer selected from a plating layer, a solder layer, and a buffer layer. In this manner, a strong bonding can be very easily obtained.

Abstract: A die-bonding method of pellets, which includes a first step for causing a first paste to adhere to a forward end of a needle, a second step for lowering the needle from above a pellet located at a first position so as to cause the first paste stuck to the forward end of the needle at the first step, to adhere to the upper portion of the pellet, and also, to displace the pellet in a state where the pellet is held at the forward end of the needle by an adhesive force of the first paste, a third step for lowering the lower portion of the pellet held by the first paste at the forward end of the needle, onto a predetermined portion of a frame applied with a second paste, and a fourth step for raising the needle after the third step.

Abstract: A method of repairing or joining a metal oxide, such as Al.sub.2 O.sub.3, containing ceramic bodies, fired or unfired by preparing a sol from a precursor of the metal oxide, mixing with a gelling agent, Al(NO.sub.3).sub.3, to form a paste, optionally adding a reinforcement of SiC particulate and heating at an elevated temperature, and a repair kit.

Abstract: A process to form a fiber-reinforced composite having a continuous thermoplastic matrix of poly(arylene sulfide ketone) resins is provided. The composite is useful to form shaped articles with high temperature resistance. The composite can be prepared by consolidating under heating a multi-layer stack of resin sheets and fiber reinforcement sheets. The poly(arylene sulfide ketone) resins can be melt-stabilized through treatment with a water-soluble salt of an alkaline earth metal. The composite has excellent thermal properties such as heat distortion temperature.

Abstract: By means of a method of bonding a first part and a second part together, in which at least one thin layer is provided on at least one of the parts and is activated by a slight polishing treatment, after which the likewise activated surface of the second part is bonded to the activated surface of the first part by mechanical wringing, a rigid bond can be obtained in which the spacing between the parts can be accurately adjusted.

Abstract: A chemically implemented method is disclosed for producing structural connections between pairs of members, a portion of the first member being telescoped within an opening formed by and within the second member, such connections being substantially comparable in strength and rigidity to connections produced by forced fit or by thermal shrinkage methods.Members are formed to provide for mutual fits which may range from "coarse clearance fit" to "light push fit", allowing generally for hand assembly. Prior to assembly the interfacing surfaces are coated with simple ferrous oxide. After assembly the members are clamped or supported temporarily to provide immobility to the joint during the expansive conversion of simple ferrous oxide to higher levels of ferric oxide via the introduction of hydrogen peroxide solution of at least 15% concentration into the interstices of the joint. The clamp or support is then removed leaving a strong and compressively impacted joint.

Abstract: A method of making shaped bodies of silicon carbide, of graphite coated with silicon carbide or of a graphite-like material with a silicon carbide surface wherein a graphitic body is assembled from preformed parts in the desired shape and is immersed, under a chemically inert atmosphere, in a silicon melt and after penetration of the melt into gaps between abutting surfaces of the body and after reaction of the silicon with the graphite or the graphite-like material to form silicon carbide at the junctions, the body is removed from the melt and is cooled in a chemically inert atmosphere.

Abstract: A process for improving adhesion between photographic layers of a photographic element comprising a support having provided thereon at least(1) a first photographic layer comprising a high molecular weight compound having a functional group capable of reacting with an isocyanate group and(2) a second photographic layer comprising a high molecular weight compound having a functional group capable of reacting with an isocyanate group which compound is different from the high molecular weight compound of said first layer,which process comprises coating from 2 to 20 ml/m.sup.2 of a solution containing a polyisocyanate compound having at least two isocyanate groups on the first photographic layer, drying said solution, and then coating the second photographic layer.

Abstract: The invention relates to chemically bonded laminated structures and their production from oriented polymeric laminae. The bonds between the contacting lamina are formed by chemical reaction across their interface involving constituent molecular chains of each laminae. Three methods have been found for producing the bonds: (a) bringing the surfaces of the lamina in intimate contact to within 10.degree. C. and 100.degree. C. below the melting temperature of the surfaces; (b) interposing a coupling agent for the polymer molecules of the intimately contacting surfaces of each member into their interface and heating the laminate to a temperature effective to cause reaction of the coupling agent with the molecules of each; and (c) interposing a catalyst to promote chemical reaction of the molecules of each laminae with the molecules of intimately contacting lamina into their interface and heating to a temperature effective to cause reaction.

Abstract: A method for seaming flexible cellulose webs, to form a flexible cellulosic laminate structure, by a process which comprises overlapping edges of said cellulosic web, applying therebetween an aqueous zinc chloride solution, heating and pressing together the overlapped edges and retaining at least about 0.002 g/cm.sup.2 or more zinc chloride at the seam of said web and the reuslting seamed webs.

Abstract: Lamination of a photopolymerizable film onto a substrate employs an intermediate nonphotosensitive liquid which is substantially all monomer.

Abstract: Hydrogenated boron-silicon alloy films having unexpected properties permitting in one embodiment the bonding together of metal and ceramic substrates by coating the surfaces to be bonded with the film mating the surfaces and heat treating the mated surfaces to expell hydrogen therefrom and to react to resulting boron-silicon alloy film with the substrates to form a liquid reaction product which forms a surface bond with the substrates or is at least partially absorbed in the substrates. In another embodiment, at least one surface of an intermetallic compound formed from elements selected from groups III and V of the periodic table is sealed against structural degradation by forming on the surface a solid boron-silicon-hydrogen alloy film. In still another embodiment, metal and organic resin substrates are protected against attack by water vapor, dissociated oxygen and molecular oxygen by forming a solid boron-silicon-hydrogen alloy film on the substrates.

Abstract: A coupler for electrically-isolating two conductive sections of fluid-passing line includes two nonconductively-interconnected pieces of tubing for insertion in the line. The pieces of tubing each have a divergently-flared end, and the flared ends are nonconductively-interconnected within two dielectric wafers. Each wafer has a tapered hole extending through it that matches the flared ends and enlarges to a face on the wafer. The flared ends are each bonded within a separate one of the tapered holes in a position recessed from the face with the flare of the end paralleling the taper of the hole, and the faces are bonded together with the larger ends of the tapered holes aligned and the flared ends sealed in fluid communication with an electrically-nonconductive gap between them.

Abstract: A chemically implemented method is disclosed for producing structural connections between pairs of members, a portion of the first member being telescoped within an opening formed by and within the second member, such connections being substantially comparable in strength and rigidity to connections produced by forced fit or by thermal shrinkage methods.Members are formed to provide for mutual fits which may range from "course clearance fit" to "light push fit", allowing generally for hand assembly. Prior to assembly the interfacing surfaces are coated with simple ferrous oxide. After assembly the members are clamped or supported temporarily to provide immobility to the joint during the expansive conversion of simple ferrous oxide to higher levels of ferric oxide via the introduction of strong hydrogen peroxide into the interstices of the joint. The clamp or support is then removed leaving a strong and compressively impacted joint.

Abstract: The invention provides an extruded caulk strip comprising a shaped caulk body in melt fusion contact with one major surface of a protective strip formed of substantially amorphous, non-tacky, conformable, thermoplastic, film-forming polymeric material. The extruded caulk strip is formed by melt extruding the thermoplastic film-forming polymeric material to form a continuous plastic strip, melt extruding a caulk mass to form a shaped caulk body, and contacting one of the major surfaces of the strip with the shaped caulk body while the contacting surfaces of the strip and the caulk body are in a plastic state capable of self fusion on contact.

Abstract: A nonflammable layer is made by drying an aqueous alkali metal silicate composition on a substrate in the presence of a drying atmosphere containing at least 30% free oxygen by volume so that the resulting layer remains bubble-free on aging even under intense ultraviolet radiation.