Abstract: Methods for producing an annular casing for an aircraft turbine engine are provided. The annular casing includes an annular body made from a composite material based on a first resin, and a fire-resistant outer layer which covers an external annular surface of the body and which is made from a composite material based on a self-extinguishing second resin. The method includes preparing a strip of a glass fabric preimpregnated with said second resin, this strip including woven fibres oriented in directions that are perpendicular to one another and inclined by an angle of approximately 45° with respect to the axis of elongation of the strip, and applying the strip to the external surface of the body so as to cover the entirety of this surface in a single pass of the strip around the body.

Abstract: Provided is a thermosetting resin composition (C) of which curing can be started at a relatively low temperature in a short time and a cured product exhibits high heat resistance, the thermosetting resin composition (C) comprising an epoxy resin; an epoxy resin curing agent; and an epoxy resin curing accelerator, wherein the epoxy resin curing agent contains an imidazole-based curing agent 1 which is not encapsulated in a microcapsule and a curing agent 2 which is encapsulated in a microcapsule, and the epoxy resin curing accelerator comprises a urea derivative.

Abstract: Provided are a heat dissipation material capable of ensuring stable adhesion while reducing cost, an inlay substrate using the same, and a method for manufacturing the same. A heat dissipation material having adhesive is obtained by coating a portion or the whole of the heat dissipation material with a heat dissipation material adhering composition including a resin component containing an epoxy resin, a curing agent, and an inorganic filler, and having a complex viscosity at 80° C. of 1×103 Pa·s to 5×106 Pa·s.

Abstract: A curable matrix resin composition containing a thermoset resin component and metastable thermoplastic particles, wherein the metastable thermoplastic particles are particles of semi-crystalline thermoplastic material with an amorphous polymer fraction that will undergo crystallization upon heating to a crystallization temperature Tc. A fiber-reinforced polymeric composite material containing metastable thermoplastic particles is also disclosed.

Abstract: Prepregs and stacks of prepregs based on reactive epoxy resins that can be cured at lower externally applied temperatures such as from 70° C. to 110° C. with acceptably short cycle times comprise epoxy resins of epoxy equivalent weight from 200 to 500 containing a curing agent but no hardener.

Abstract: A composite prepreg base includes a raw prepreg base comprising a fiber sheet including discontinuous reinforcing fibers arranged in one direction and having a fiber length of 1-300 mm and a matrix resin infiltrated into the fiber sheet; and an additional resin layer formed on at least one surface of the raw prepreg base. The composite prepreg base is produced by a process including (i) the step of preparing the raw prepreg base and (ii) the step of forming an additional resin layer on at least one surface of the raw prepreg base prepared. A layered base includes two or more sheets of the composite prepreg base which have been superposed so that the additional resin layer is present on at least one surface; and a fiber-reinforced plastic formed by heating and pressing the layered base.

Abstract: There is provided a laminated body comprising a first resin layer consisting of a first fibrous base material and a resin and a second resin layer consisting of a second fibrous base material and a resin, wherein the first resin layer and the second resin layer are disposed such that the first resin layer and the second resin layer are at least partly positioned in separate regions separated by the center line in a thickness direction of the laminated body; wherein at least one of the first fibrous base material and the second fibrous base material has a bowing region where a bowing region is a region in which a smaller warp/weft crossing angle is less than 90° in the fibrous base material; and wherein in the bowing region, an angle formed by a warp of the first fibrous base material and a warp of the second fibrous base material and an angle formed by a weft of the first fibrous base material and a weft of the second fibrous base material, whichever is larger, is 2° or less.

Abstract: The invention relates to the use of alkyl or dialkyl-semicarbazone as a hardener for hardening epoxy resin and to a method for controlling the hardening of epoxy resin and epoxy resin compounds.

Abstract: The present invention pertains to a prepreg containing reinforcing fibers and an epoxy resin composition. Said prepreg is sandwiched between dies preheated to 140.degree.C and pressurized to MPa and held for five minutes at this temperature to obtain a cured article having a G?Tg of at least 150.degree.C. The present invention also pertains to a fiber-reinforced composite material and a method for producing same. According to this invention, it is possible to provide a prepreg which is well suited to press-molding, particularly to high-cycle press-molding. It is also possible to provide a fiber-reinforced composite material which can be heat-cured at a lower temperature and over a shorter time than conventional methods, with which it is possible to minimize excessive flow of resin in hot-press curing, and which is resistant to performance defects such as fiber meandering and defects in surface appearance. A method for producing the same can also be provided.

Abstract: A transparent composite substrate according to the present invention includes a composite layer containing a glass cloth formed of an assembly of glass fibers and a resin material impregnated in the glass cloth. The assembly of the glass fibers itself has a variation in a refractive index and a difference between a maximum value and a minimum value of the refractive index is equal to or less than 0.008. According to the present invention, it is possible to provide a transparent composite substrate having superior optical characteristic and a high-reliable display element substrate having the transparent composite substrate.

Abstract: A resin composition contains a cyanate ester compound, a maleimide compound, an epoxy resin, a silicone rubber powder, and an inorganic filler. The cyanate ester compound contains a compound represented by the following formula. The silicone rubber powder is contained in an amount of 40 to 150 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin. The inorganic filler is contained in an amount of 100 to 340 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin. A total content of the silicone rubber powder and the inorganic filler is 140 to 380 parts by mass based on 100 parts by mass in total of the cyanate ester compound, the maleimide compound, and the epoxy resin.

Abstract: Composite materials having favorable acoustic and vibration damping properties, while maintaining or improving other composite mechanical properties, include an interleaf layer comprising at least two different nonwoven materials in a specific sequence such that a gradient is formed in the z direction upon curing or an interleaf with a compositional gradient within its structure such that a resin interpenetration gradient is achieved upon curing. Composite materials that contain multilayered nonwoven interleaves are useful, for example, in structures found in aircrafts, such as fuselage skins, stringers and frames. Also contemplated are methods of making the composite material and the structures and aircrafts that contain the composite material.

Abstract: The present technology provides a carbon fiber reinforced plastic that includes carbon fibers covalently bonded to an energetic polymer and a polymer matrix. Also described is a method for recycling carbon fibers from the carbon fiber reinforced plastic material using microwave energy to separate the carbon fibers from the polymer matrix.

Abstract: Disclosed herein are a prepreg, including: an inorganic fiber, an organic fiber, or a hybrid fiber obtained by mix-weaving the inorganic fiber and the organic fiber, coated with a thermally conductive component or impregnated with a thermally conductive component; and a cross-linkable resin for impregnating the fiber therewith, a method for manufacturing the same, and a copper clad laminate using the same, so that the prepreg and the copper clad laminate can maintain a low coefficient of thermal expansion and a high modulus of elasticity and have excellent heat radiation property.

Abstract: Fiber webs that may be coated and used in filter media are provided. In some embodiments, the fiber web is a non-woven web that is coated with a resin including at least two components (e.g., a first component and a second component) that may react with one another to form a copolymer. In some embodiments, the coated fiber web may be sufficiently self-supporting, durable, and strong, such that filter media and/or elements formed of the web do not require additional support structures (e.g., a scrim).

Abstract: The invention provides a fiber reinforced composite material having high interlaminar toughness and compressive strength under wet heat conditions, as well as an epoxy resin composition for production thereof and a prepreg producible from the epoxy resin composition. The prepreg comprises at least constituents [A], [B], and [C] as specified below and reinforcement fiber, wherein 90% or more of constituent [C] exists in the depth range accounting for 20% of the prepreg thickness from the prepreg surface: [A] epoxy resin [B] epoxy resin curing agent [C] polymer particles insoluble in epoxy resin and falling under any of the following [Cx] to [Cz]: [Cx] polymer particles insoluble in epoxy resin and giving a particle diameter distribution chart meeting the following requirements from (x-i) to (x-iii): (x-i) the chart has at least two peaks, (x-ii) the particles giving the two highest peaks have a diameter ratio in the range of 1.

Abstract: This invention relates to a prepreg containing a reinforcing fiber, a reinforcing fiber substrate in the form of a sheet and containing the reinforcing fiber, and a matrix resin, such that the matrix resin is impregnated into the reinforcing fiber substrate and also covers one surface of the reinforcing fiber substrate, and an impregnation ratio of the matrix resin is within a range of 35% to 95%.

Abstract: To provide an epoxy resin composition that is suitable for producing optical sheets which exhibit excellent transparency, heat resistance, strength, smoothness and light resistance, and a cured product thereof. An epoxy resin composition for optical3 sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): (wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents any one of the following x, y and z): (wherein, there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; y.

Abstract: The present invention is directed to methods of functionalizing carbon nanotubes (CNTs), particularly single-wall carbon nanotubes (SWNTs), with organosilane species, wherein such functionalization enables fabrication of advanced polymer composites. The present invention is also directed toward the functionalized CNTs, advanced CNT-polymer composites made with such functionalized CNTs, and methods of making such advanced CNT-polymer composites.

Abstract: The invention relates to a rolled product having a thickness that can be adjusted by means of separation. The inventive product comprises an alternating stack (2) of sheets (4) and layers (6) of an adhesive material (8). Each of said sheets (4) has an intrinsic resistance to tearing and each layer (6) of adhesive material (8) joins together two adjacent sheets (4) in the stack (2) using a bond strength that is lower than the tearing resistance of the sheets (4). In this way, each sheet (4) can be detached from the stack (2) without being torn. According to the invention, each sheet (4) is essentially made from woven fibers and each sheet (4) belonging to each pair of sheets (4) which are adjacent to the same layer (6) of adhesive material (8) is impregnated, throughout the thickness thereof, with a mass of adhesive material (8) which is incorporated in the shared layer (6) of adhesive material (8).

Abstract: A composite material comprises a nonwoven layer having a viscoelastic interleaf, which may be positioned mid-ply therein.

Abstract: A glass composition including SiO2 in an amount from about 69.5 to about 80.0% by weight, Al2O3 in an amount from about 5.0 to about 18.5% by weight, MgO in an amount from about 5.0 to about 14.75% by weight, CaO in an amount from 0.0 to about 3.0% by weight, Li2O in an amount from about 3.25 to about 4.0% by weight, and Na20 in an amount from 0.0 to about 2.0% by weight is provided. Glass fibers formed from the inventive composition may be used in applications that require high strength, high stiffness, and low weight. Such applications include, but are not limited to, woven fabrics for use in forming wind blades, armor plating, and aerospace structures.

Abstract: A copper-clad laminate of a highly-elastic glass fabric base material/thermosetting resin formed of prepreg obtained by impregnating a glass fabric base material made of a glass woven fabric having a thickness of 25 to 150 ?m, a weight of 15 to 165 g/m2 and a gas permeability of 1 to 20 cm3/cm2/sec. with a thermosetting resin composition and drying it.

Abstract: The invention provides a varnish produced through reaction between a compound having an amino group and a resin having a functional group capable of reacting with an amino group, and having a polycyclic structure, wherein a portion of a plurality of the functional group of the resin is caused to react with the amino group of the compound in a solvent, and also a varnish produced through reaction between a compound having a phenolic hydroxyl group and a resin having a functional group capable of reacting with a phenolic hydroxyl group, and having a polycyclic structure, wherein a portion of a plurality of the functional group of the resin is caused to react with the phenolic hydroxyl group of the compound in the solvent. The invention also provides a prepreg, a resin-coated film, a metal-foil-clad laminate, and a printed wiring board produced by use of any of the varnishes.

Abstract: This invention concerns a thermosetting resin system that is useful in the manufacture of high performance prepreg, laminate and composite materials as well as, prepregs, laminates and composites made from the thermosetting resin composition.

Abstract: A thermosetting resin composition and a prepreg or laminate using the same are provided. The thermosetting resin composition includes an epoxy resin and a curing agent, in which the curing agent is a dual-curing agent system formed with a multi-functional aromatic polyester curing agent in combination with a phenolphthalein benzoxazine phenol aldehyde or a poly(styrene-co-maleic anhydride). An organic or inorganic fiber reinforced material is impregnated with the thermosetting resin composition to form a prepreg, and the prepreg is bonded to a substrate with a metal foil disposed thereon, to form a laminate.

Abstract: The present invention relates to fiber glass strands, yarns, fabrics, composites, prepregs, laminates, fiber-metal laminates, and other products incorporating glass fibers formed from glass compositions. The glass fibers, in some embodiments, are incorporated into composites that can be used in reinforcement applications. Glass fibers formed from some embodiments of the glass compositions can have certain desirable properties that can include, for example, desirable electrical properties (e.g. low Dk) or desirable mechanical properties (e.g., specific strength).

Abstract: This invention concerns a thermosetting resin system that is useful in the manufacture of high performance prepreg, laminate and composite materials as well as, prepregs, laminates and composites made from the thermosetting resin composition.

Abstract: Disclosed is an epoxy resin composition comprising at least component [A]: a glycidyl-amino-group-containing polyfunctional epoxy resin, component [B]: an epoxy resin other than the component [A], component [C]: a polyisocyanate compound, component [D]: an aromatic-amine-based curing agent, and component [E]: a thermoplastic resin, characterized in that the epoxy resin composition has an epoxy group concentration of 0.67 to 1.51 Eq/kg of the total amount of the components [A] to [D], and preferably that the component [E] is in a proportion of 10 to 50% by weight of the total epoxy resin composition. Use of a prepreg having the resin composition as a matrix resin makes it possible to obtain a composite material with excellent heat resistance and wet heat resistance together with high mechanical properties.

Abstract: Embodiments of the present disclosure set forth a prepreg. In one embodiment, the prepreg includes a fibrous material and a resin blend. The resin blend includes an epoxy compound, a compound having a ring structure, and a crosslinking agent. The resin blend has been heated to a temperature substantially greater than 225 degrees Celsius in a curing process when preparing the prepreg.

Abstract: A halogen-free varnish includes epoxy resin, composite curing agent, condensed phosphate, and filler. The composite curing agent includes Benzoxazine (BZ) resin and amino triazine novolac (ATN) resin. The filler has aluminium hydroxide and silica.

Abstract: A composition and process in which a silane coupling agent has nano-mineral particles grafted to the silane copolymer molecules in the coupling agent and such coupling agent is applied to a scoured fabric prior to the fabric being coated with a polymeric coating.

Abstract: A carbon fiber-made reinforcing woven fabric comprising a carbon-fiber woven fabric formed from warps consisting of carbon fibers and wefts consisting of carbon fibers, and auxiliary yarns arranged along at least either warps or wefts, the auxiliary yarns being passed over and under other yarns differently from associated warps or wefts. When prepreg is produced by applying matrix resin to this woven fabric by a wet/prepreg processing method before drying, the presence of auxiliary yarns in gaps in the vicinities of warp-weft intersections on the woven fabric allows matrix resin to remain around auxiliary yarns to produce no apertures in the obtained prepreg, whereby the woven fabric is suitable for a prepreg production by wet/prepreg processing.

Abstract: Laminates for printed circuit boards having surface layers of curable resin impregnated woven glass fabric and intermediate layers of curable resin impregnated non-woven glass. The intermediate layers contain 200 percent by weight to 275 percent by weight, based on the resin in the intermediate layers, of a thermally stable aluminum hydroxide of the molecular formula Al2O3.nH2O, wherein n has a value of 2.6<n<2.9. The aluminum hydroxide has a specific surface area, measured by the BET method, of 2 to 10 m2/g and a particle size in the D50% range of 5 to 10 ?m.

Abstract: Method for the preparation of a laminate for printed circuit boards by composing together surface layers of curable resin impregnated woven glass fabric and intermediate layers of curable resin impregnated non-woven glass. The intermediate layers contain 200 percent by weight to 275 percent by weight, based on the resin in the intermediate layers, of a thermally stable aluminum hydroxide of the molecular formula Al2O3.nH2O, wherein n has a value of 2.6<n<2.9. The aluminum hydroxide has a specific surface area, measured by the BET method, of 2 to 10 m2/g and a particle size in the D50% range of 5 to 10 ?m.

Abstract: Printed circuit boards of a laminate having surface layers of curable resin impregnated woven glass fabric and intermediate layers of curable resin impregnated non-woven glass. The intermediate layers contain 200 percent by weight to 275 percent by weight, based on the resin in the intermediate layers, of a thermally stable aluminum hydroxide of the molecular formula Al2O3.nH2O, wherein n has a value of 2.6<n<2.9. The aluminum hydroxide has a specific surface area, measured by the BET method, of 2 to 10 m2/g and a particle size in the D50% range of 5 to 10 ?m.

Abstract: A pressure sensitive adhesive composition comprised of: a) 75 to 99.9 weight percent of a tackified thermoplastic polymer component comprising 1) 1–99 weight percent of a thermoplastic polymer substantially without epoxy-binding or ester functions, and 2) 1–99 weight percent of a tackifier; and b) 0.1 to 25 weight percent of an epoxy component comprising a cured epoxy and non-woven webs made of this adhesive composition.

Abstract: A friction material has a first layer of a base material and a second layer of at least one type of friction modifying particle having substantially symmetrical geometric shapes on a top surface of the base material. The second layer has an average thickness of about 30 to about 200 microns and the surface area coverage of about 80 to about 100% such that the top layer has a fluid permeability lower than the first layer.

Abstract: A multilayer printed wiring board includes a core member having a plurality of glass clothes impregnated with a resin. Each of the glass clothes is woven with glass yarns each of which includes a bundle of glass filaments. One or more buildup layers are laminated on one or each surface of the core member. The core member has an elastic modulus which is no less than 100 times that of the buildup layer at 240° C.

Abstract: The glass transmittance of UV light having a wavelength of 365 nanometers is reduced by compounding an oxide or salt of at least one of Fe, Cu, Cr, Ce, Mn and mixtures thereof. The fiberglass cloth can be used for providing reinforced prepregs used in producing printed circuit boards or laminated chip carrier substrates.

Abstract: Curable compositions, such as benzoxazine-based ones, are useful in applications within the aerospace industry, such as for example as a heat curable composition for use as a matrix resin or an adhesive, and form the basis of the present invention.

Abstract: Screen ink printed film carrier having an ink screen printed electrical altering image provided on thin adhesive film carrier that is flexible and capable of deformation out of the major plane of the carrier to conform to the exterior contour presented by flat or complicated three-dimensional objects, upon which the film carrier can be affixed.

Abstract: The present inventions introduce fabrics having an array of closely spaced, non-overlapping plates. The inventive fabrics are both mechanically strong yet highly flexible and can be used in applications requiring a high degree of abrasion, wear, cut, tear, and puncture resistance, and optional, heat resistance. The inventive fabrics can be useful in fabric applications such as gloves, garments, aprons, knee pads, luggage, tarps, and roofs for convertible cars.

Abstract: A carbon friction material, preferably a woven carbon friction material, wherein a binder such as an epoxy or phenolic resin is used to strengthen and impart rigidity to the friction material. The friction material has a graded concentration of the binder such that the friction surface may have substantially no binder. A reinforcing substrate such as a fiberglass backing may also be present. The coefficient of friction at the friction surface may be further increased by, for example, shaving the surface such that a plurality of fibers become oriented in a direction perpendicular to the friction surface.

Abstract: The invention concerns a method for making a micaceous product capable of being impregnated preferably in the form of a mica ribbon by combining at least a support and a mica sheet. The invention is characterized in that it consists in: coating the support and the sheet with a solvent-fee resin or a mixture of solvent-free resins using several coating rollers brought to a temperature for producing the coat; combining the support with the mica sheet; subjecting them to a pressure and heat treatment.

Abstract: A polished-piece holder is provided that does not easily stick or adsorb to a polishing pad of a polishing apparatus and reduces occurrences of production line troubles and therefore the number of failed polished pieces. A single sheet of a thermosetting resin impregnated fiber substrate or a laminated sheet formed by laminating a plurality of sheets of the thermosetting resin impregnated fiber substrate is formed under heat and pressure into a plate. The thermosetting resin impregnated fiber plate is then processed to form a polished-piece holder for holding pieces to be polished. The evaluation portion has a certain length in a direction of the average line. The thermosetting resin impregnated fiber plate has a surface roughness with a maximum wave height Ry of 10 &mgr;m or greater over an almost entire area of the surface layer.

Abstract: An orthopedic casting material comprising a substrate impregnated with a water-curable resin comprising an aromatic polyisocyanate and a polyol, wherein the free NCO level of said prepolymer is from about 6% to about 10%. Preferably the free NCO level is from about 7% to about 8%. Preferably the polyol has a molecular weight of at least 2,000, and a hydroxyl number of from about 28 to about 56, preferably from about 35 to about 40. The casting material may be packaged as a kit with a casting aid comprising a substrate impregnated with a lubricating material.

Abstract: A structurally reinforced panel and a method of forming the panel are disclosed. The reinforced panel includes a panel portion, a reinforcement material and a buffer material disposed therebetween.

Abstract: A layer structure has at least two material layers with an intermediate or casting layer interposed between adjacent material layers. The intermediate layer includes a casting material and a plurality of elongated elements having different orientations which are extending across each other to form a weave to determine the interspacing between the two material layers before any casting material of the intermediate layer is inserted. The two material layers which are to be joined together may be gradient coils of a tomograph.

Abstract: Disclosed herein is a cloth treating agent comprising a tocopherol and at least one of a polyethylene oxide compound and a derivative thereof. The cloth treating agent permits the provision of a print which has sufficiently high color value and depth in color and can be prevented to the utmost from undergoing bleeding even when the amount of inks applied is great.