Abstract: An elongated, tapered seamless and hollow tubular member of net shape is disclosed. The tubular member is made by a method comprising providing an elongated, tapered mandrel, applying a composite material consisting of reinforced fibers with a resin on the mandrel, providing a shell having an elongated, tapered bore, inserting the mandrel with the composite material applied thereon into the bore of the shell to provide a mold assembly, heating the mold assembly, displacing the mandrel and shell longitudinally toward each other to compress the composite material of the article being formed by simultaneously applying a tensile force at one end of the mandrel and a compressive force at the other, allowing the mold assembly to cool, and then separating the shell and mandrel from the molded article.

Abstract: Chemorheologically viscosity tailored matrix resin formulations for use in forming prepregs and composite articles are disclosed. These formulations have a specified viscosity profile obtained from a curable matrix resin and an effective amount of a reactive resin curing agent reactive at room temperature and a latent resin curing agent substantially nonreactive at room temperature. The latent resin curing agent is activated upon heating or radiation. The matrix resin formulation is adapted upon formulation to have a viscosity sufficiently low enough to enable the matrix resin to impregnate fibers or broadgoods at room temperature without the necessity for the application of heat or solvent and which, upon standing at room temperature after impregnation into the fibers or broadgoods to form a prepreg composition, rises in viscosity.

Abstract: A preform useful in forming fiber reinforced cementitious composites is disclosed. The preform consists of a free-standing network of metal fibers. In one embodiment, the preform has a shape which bounds a substantial non-interstitial volume devoid of fibers such as a ladle lip ring or an I-beam. The amount of fibers in the preform ranges from about 1 to 10 percent by volume.

Abstract: Method of making a reinforcing fabric comprising warps and woofs which are multifilament yarns made of carbon fibers. The widths W (mm) and finenesses D (d:denier) of the warps and woofs satisfy the equation:W=k.multidot.(D/.rho.).sup.5/9wherein k represents 3.5.times.10.sup.-2 to 10.0.times.10.sup.-2 (mm.multidot.d.sup.-5/9) and .rho. represents specific gravity of the carbon fibers. The woven fabric has a cover factor K.sub.c of 90.0 to 99.8%. The fabric is made by treating a precursor fabric with water jets.

Abstract: Composite materials which generate delayed dimensional change and force due to prestressed fibers constrained and controlled within and by a responsive polymer matrix which yields in a predetermined manner, and methods for preparing the same. In various embodiments the response may be externally-activated on-demand or self-activated time-dependent.

Abstract: A coated abrasive article comprising:(a) a backing;(b) at least one layer comprising a plurality of precisely shaped abrasive particles that comprise abrasive grits and a free-radically polymerized binder, wherein said precisely shaped particles have vertexes and(c) a bonding medium which serves to adhere said precisely shaped particles to said backing;wherein the precisely shaped particles are randomly disposed on the backing such that at least a portion of said particles are oriented with said vertexes pointing toward said backing.

Abstract: The binder is applied to fibers to bind particles to the fibers. The fibers have hydrogen bonding functional groups. The particles have functional groups capable of forming a hydrogen bond or a coordinate covalent bond. The binder comprises binder molecules, wherein the binder molecules have at least one functional group that forms a hydrogen bond or a coordinate covalent bond with the particles, and at least one functional group that forms a hydrogen bond with the fibers. A substantial portion of the particles that may be adhered to the fibers are adhered in particulate form by hydrogen bonds or coordinate covalent bonds to the binder, and the binder in turn may be adhered to the fibers by hydrogen bonds. Fibers containing particles bound by this method are easily densified.

Abstract: A metal-polymer laminate has a bidirectional reinforcing layer containing about 45-70 vol. % high strength glass fibers. The bidirectional reinforcing layer includes a center layer containing glass fibers oriented generally parallel to a first direction; and first and second outer layers each reinforced with glass fibers oriented in a second direction extending generally transverse to the first direction. The bidirectional laminate is suitable for use in aircraft flooring and other applications requiring improved impact strength.

Abstract: A curable material comprising a blend of a fluorine-containing cyanate and a fluorine-containing poly(arylene ether) wherein said cyanate is a monomer having the structureN.ident.C--O--R--.sub.n --O--C.ident.Nsaid fluorine containing poly(arylene ether) has the structureX--R--.sub.m --Xwherein X is any group capable of reacting with a --C.ident.N group;R is an aliphatic or aromatic group which may or may not be fluorosubstituted;R.sup.1 is an aliphatic or aromatic group which may or may not be fluoro substituted or R.sup.1 is selected from the group consisting of ether, carbonyl, sulfone, phosphine oxide and sulfide, and at least one of R or R.sup.1 must be fluoro substituted;n is 0-10; andm is 0-100;said material being heat-curable at a temperatures between 180.degree. and 325.degree. C.

Abstract: A method of making a fabric for use in wallcoverings, wall paneling, and ceiling tiles is disclosed. The wallcovering comprises a woven fabric layer of pigmented resin textured glass, a stain repellant polymeric fluorocarbon face coating applied to a first side of the fabric layer, and an opaque back coating comprising an acrylic resin applied to a second side of said fabric layer. The fabric is flame retardant, flexible and has substantial dimensional stability and strength.

Abstract: An improved electroconductive adhesive tape used for fixing an explosion protective band to a Braun tube is disclosed. This tape has a base, a non-adhesive thermoplastic resin layer and an adhesive layer. The base uses woven fabrics having a network structure. In the above woven fabrics, glass fibers twisted with at least one piece of electroconductive fine fiber are used as warps, while either cotton yarns or blended spurn yarns made of cotton and polyester are used as wefts. The thermoplastic resin layer and adhesive layer are applied on both sides of the base. The electroconductive adhesive tape of this invention not only prevents the static electricity from accumulating in a Braun tube, but also improves the adhesive strength between the base and a thermoplastic resin layer such as a polyethylene layer.

Abstract: Composite pressure vessels having improved fiber strength translation of the unidirectional, axial, impregnated strand are obtained by a process in which chemorheologically viscosity tailored matrix resin formulations containing surface-active agents or compounds acting as surface-active agents are employed. The use of chemorheologically viscosity tailored matrix resin formulations containing surface-active agents reduces the strength variation of pressure vessels produced from prepregs of the disclosed matrix resin formulations.

Abstract: Particles are bound to fibrous material by a polymeric binder selected from the group consisting of poly(caprolactone) diol, polyamides and polyamines. The polymeric binder has a hydrogen bonding functionality or coordinate covalent bond forming functionality on each repeating unit of the polymeric binder. As a specific example, the fibrous material is cellulosic fibers and the particles are superabsorbent particles. Preferably 3-80 percent binder and 0.05-80 percent particles, by weight of the total weight of the fibrous material, binder and particles are included. The binder preferably has a molecular weight greater than 500 grams/mole, preferably 4,000-8,000 grams/mole. Particles attached to the fibers in this manner are firmly adhered and are not easily dislodged. Fibrous products produced by this method include fibers to which particles are bound, and fibers which have been treated with the binder but to which particles are not bound.

Abstract: A process for making a crosslinked, highly porous body derived from a water-soluble, hydrogel polymer, wherein the porous body is characterized in that it has an open-celled 3-dimensional lattice structure, a density of less than about 1.0 g/cm.sup.3, a surface area of equal to or greater than about 30 m.sup.2 /g, and a compression strength of equal to or less than about 75% yield at 300 psi.

Abstract: Fine textured fire resistant flame barrier fabrics for use as mattress and pillow ticking, bedspreads, mattress covers, draperies, upholstery, protective apparel, tenting, awnings, field fire shelters, for use as a substrate or backing for coated upholstery fabrics and as a flame barrier for use beneath upholstery fabric. The fabric is formed from a corespun yarn comprising a high temperature resistant continuous filament fiberglass core and a low temperature resistant staple fiber sheath surrounding the core. The core comprises about 20% to 40% of the total weight of the corespun yarn while the sheath comprises about 80% to 60% of the total weight of the corespun yarn. The total size of the corespun yarn is within the range of about 43/1 to 3.5/1 conventional cotton count. This corespun yarn may be woven and knit in fine, non-plied form and extends the range of fineness of fabrics below heretofore achievable limits.

Abstract: A triaxially wound non woven roofing membrane fabric is disclosed. The selvage areas of the fabric having an increased number of warp yarns in spaced groups to provide an area for the attachment of the fabric to a roof through the use of roofing tacks inserted through the selvage areas of the fabric.

Abstract: A water absorbing porous article comprising a sponge and a metal complex is disclosed The metal complex comprises a metal ion, at least one chelating polymer chelated to the metal ion and at least one potentiator chelated to the metal ion. The chelating polymer in a preferred embodiment is chitosan.

Abstract: Particles are bound to fibrous materials by a non-polymeric binder selected from the group consisting of an alcohol, a carboxylic acid, an aldehyde, an amino acid, an amide, and a polyamine. Particular disclosed binders include glycerin, glyoxal, ascorbic acid, urea, glycine, pentaerythritol, a monosaccharide and a disaccharide. The fibrous material is preferably cellulose fibers, and the particles are preferably superabsorbent particles. Fibers that incorporate the particles and binder preferably include 3-80% binder and 0.05-80% particles, by weight of the total weight of the fibrous material, binder and particles. Particles adhered to the fibers with the binder are firmly adhered and are not easily dislodged, hence products incorporating the fibers retain the desired property imparted by the particles, such as absorbency. Fibrous products produced by this method include fibers to which particles are bound, and fibers which have been treated with the binder but to which particles are not bound.

Abstract: Fluid-sealing gasket sheet materials are described herein which seal particularly well against polar liquids. These gasketing sheets have from about 5 to about 20% fiber, and at least about 62% filler, and a reduced binder concentration, containg about 18% by weight of binder or less, allowing the binder to be reduced even to zero. The filler must be at least about 3% by weight of a gel-forming mineral filler. In addition to giving from good to very excellent seals against polar liquids, this gasketing also has good torque retention and creep resistance.

Abstract: A concrete coloring material and a process for coloring concrete by means of such a concrete coloring material capable of permitting concrete to exhibit natural color or aesthetic properties while preventing concrete from being substantially discolored. Polyethylene oxide is used as a water-soluble adhesive or gIue. The oxide is mixed with a composition such as dye, pigment, a mixture thereof or the like, to thereby permit the composition to penetrate into the concrete.