A polymer matrix composite includes a porous polymeric network structure; and a plurality of acoustically active particles distributed within the polymeric network structure. The weight fraction of acoustically active particles is between 0.80 and 0.99, based on the total weight of the polymer matrix composite. The polymer matrix composite has an air flow resistance of less than 100 seconds/50 mL/500 m.

A composite polymer electrolyte membrane has a high proton conductivity even under low-humidity, low-temperature conditions, a reduced dimensional change rate, a high mechanical strength and high chemical stability, and produces a solid polymer electrolyte fuel cell with a high output and high physical durability, a membrane electrode assembly, and a solid polymer electrolyte fuel cell containing the same. This composite polymer electrolyte membrane contains a composite layer composed mainly of a polyazole-containing nanofiber nonwoven fabric (A) and an ionic group-containing polymer electrolyte (B), the polyazole-containing nanofiber nonwoven fabric (A) being basic.

A method for coating hollow fiber membranes is disclosed. The method includes preparing a continuous circulating circuit, which includes a membrane contactor module, two liquid reservoirs containing a solvent, two pipeline paths, and at least one injector. The membrane module include a plurality of hollow fiber membranes with an inside area and an outside area, and a housing, where the plurality of hollow fiber membranes are extended inside the housing. The method further include forming a plurality of wetted hollow fiber membranes with the solvent by circulating the solvent through the continuous circulating circuit, filling at least one of the two liquid reservoirs with a coating solution, forming a coating layer on a surface of at least one of the inside area or the outside area of the plurality of wetted hollow fiber membranes by circulating the coating solution through the continuous circulating circuit, and forming a uniform coating layer by injecting the coating solution by the injector for intrusion of the coating solution through the coating layer.

A method for forming a graphene-reinforced polymer matrix composite is disclosed. The method includes distributing graphite microparticles into a molten thermoplastic polymer phase; and applying a succession of shear strain events to the molten polymer phase so that the molten polymer phase exfoliates the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along the c-axis direction.

A fluorinated copolymer composition includes a thermoplastic resin A and a fluorinated elastomer B dispersed within thermoplastic resin A. Thermoplastic resin A has a shear stress (.sub.A) of greater than 0.11 MPa when measured with a capillary rheometer at a shear rate of 243 sec.sup.1 and at 360 C. in accordance with ASTM D3835. Fluorinated elastomer B dispersed within thermoplastic resin A has an average dispersed particle size of less than 50 m.

A powder material is used in a method for manufacturing a three-dimensional shaped object, the method including: repeatedly performing preheating of a powder material containing coated particles and selective laser light irradiation of a thin layer of the powder material; and laminating together a plurality of shaped object layers of which at least some of the coated particles are fused and coupled to each other. The coated particles include a core resin and a shell material which coats the core resin and which is made of an inorganic material. An average linear expansion coefficient of the core resin at 20 to 100 C. is 5 to 240 with respect to an average linear expansion coefficient of the shell material at 20 C. to 100 C. The shell material breaks in a range between the softening temperature of the core resin and the softening temperature+50 C.

A prepreg includes conductive fibers impregnated with a matrix resin, the prepreg having a conductive region where a conductive material is dispersed in the resin. In the present invention, a resin layer composed of at least the matrix resin preferably is present on one or both surfaces of a conductive fiber layer composed of at least the conductive fibers, and the conductive region is present at least in the resin layer. In addition, the above-described conductive region preferably is present continuously in the thickness direction. The conductive region preferably is a conductive region where the conductive material is dispersed in the matrix resin, and the resin in the conductive region preferably forms a continuous phase with the matrix resin in other regions. A volume resistivity of the conductive region preferably is 1/1,000 or less of that of other regions of the matrix resin.

The present invention relates to a process for producing a molding made from blowing agent-containing foam comprising at least one fiber (F), wherein the at least one fiber (F) is partially introduced into the blowing agent-containing foam. The two ends of the respective fiber (F) that are not surrounded by the blowing agent-containing foam thus project from one side of the corresponding molding. The present invention also provides the molding as such. The present invention further provides a panel comprising at least one such molding, produced by the process according to the invention, and at least one further layer (S1). The present invention also provides for the production of the panels of the invention and for the use thereof, for example as a rotor blade in wind turbines.

A graphene-reinforced polymer matrix composite comprising an essentially uniform distribution in a thermoplastic polymer of about 10% to about 50% of total composite weight of particles selected from graphite microparticles, single-layer graphene nanoparticles, multi-layer graphene nanoparticles, and combinations thereof, where at least 50 wt % of the particles consist of single- and/or multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction. The graphene-reinforced polymer matrix is prepared by a method comprising (a) distributing graphite microparticles into a molten thermoplastic polymer phase comprising one or more matrix polymers; and (b) applying a succession of shear strain events to the molten polymer phase so that the matrix polymers exfoliate the graphite successively with each event until at least 50% of the graphite is exfoliated to form a distribution in the molten polymer phase of single- and multi-layer graphene nanoparticles less than 50 nanometers thick along a c-axis direction.

A polyarylene ether sulfone comprising endgroups of formula (I), a process for its manufacture, a molding composition comprising the polyarylene ether sulfone, use of the molding composition and fiber, film or shaped article produced using the molding composition.

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