The present invention related to a thermosetting resin composition for high frequency, the composition containing (a) a polyphenylene ether having two or more unsaturated substituent groups selected from the group consisting of the vinyl group and the allyl group at both ends of the molecular chain thereof, or an oligomer of said polyphenylene ether; (b) three or more different types of cross-linking curing agents; and (c) a flame retardant. The present invention may provide a printed circuit board for high frequency which simultaneously exhibits low dielectric loss characteristic and good moisture-absorption heat resistance, low thermal expansion characteristics, excellent thermal stability, excellent processability, and the like.

Embodiments of the present technology may include a method of making a thermoplastic composite strand. The method may include melting a reactive thermoplastic resin to form a molten reactive resin. The method may also include fully impregnating a plurality of continuous fibers with the molten reactive resin in an impregnation device. The method may further include polymerizing the molten reactive resin to form a thermoplastic resin matrix. In addition, the method may include cooling the thermoplastic resin matrix to form a thermoplastic composite strand.

A method of preparing a fiber-reinforced polymer composite is provided. The method includes (a) providing a swollen clay material; (b) chemically modifying a surface of the swollen clay material with an organosilane to form a silane-modified clay material; (c) intercalating the silane-modified clay material with a binder to form an intercalated clay material; and (d) melt compounding the intercalated clay material with a mixture comprising a polymer and fiber to form the fiber-reinforced polymer composite. A fiber-reinforced polymer composite is also provided.

A tool provided that individually creates three-dimensional structural elements which are sequentially positioned into formation of a shaped object.

A tool provided that individually creates three-dimensional structural elements which are sequentially positioned into formation of a shaped object.

Glass compositions and high-modulus, and high-strength glass fibers made therefrom, being capable of economical, continuous processing and suitable for the production of high-strength and/or high stiffness, low-weight composites, such as windturbine blades, the glass composition comprises the following constituents in the limits defined below, expressed as weight percentages: between about 56 to about 61 weight percent SiO.sub.2; between about 16 to about 23 weight percent Al.sub.2O.sub.3, wherein the weight percent ratio of SiO.sub.2/Al.sub.2O.sub.3 is between about 2 to about 4; between about 8 to about 12 weight percent MgO; between about 6 to about 10 weight percent CaO, wherein the weight percent ratio of MgO/CaO is between about 0.7 to about 1.5; between about 0 to about 2 weight percent Na.sub.2O; less than about 1 weight percent Li.sub.2O; and total residual transition metal oxides of less than about 2 weight percent.

Glass compositions and high-modulus, and high-strength glass fibers made therefrom, being capable of economical, continuous processing and suitable for the production of high-strength and/or high stiffness, low-weight composites, such as windturbine blades, the glass composition comprises the following constituents in the limits defined below, expressed as weight percentages: between about 56 to about 61 weight percent SiO.sub.2; between about 16 to about 23 weight percent Al.sub.2O.sub.3, wherein the weight percent ratio of SiO.sub.2/Al.sub.2O.sub.3 is between about 2 to about 4; between about 8 to about 12 weight percent MgO; between about 6 to about 10 weight percent CaO, wherein the weight percent ratio of MgO/CaO is between about 0.7 to about 1.5; between about 0 to about 2 weight percent Na.sub.2O; less than about 1 weight percent Li.sub.2O; and total residual transition metal oxides of less than about 2 weight percent.

The invention is directed to a resin composition containing polycarbonate, reinforced fibers and a compatibilizer having a reactive cyclic group, a resin molded article containing polycarbonate, reinforced fibers and a compatibilizer having a reactive cyclic group, and a method for preparing a resin composition including molten kneading polycarbonate, reinforced fibers and compatibilizer having a reactive cyclic group.

The invention is directed to a resin composition containing a styrene-based resin, reinforced fibers and a compatibilizer having a reactive cyclic group, a resin molded article containing a styrene-based resin, reinforced fibers and a compatibilizer having a reactive cyclic group, and a method for preparing the resin composition including: melting and kneading styrene-based resin, reinforced fibers, and compatibilizer having a reactive cyclic group

The invention is directed to a process for the preparation of a reinforced article which comprises the step of molding a molding composition comprising pellets into the article at an elevated temperature, wherein each of the pellets has an axial length and comprises a core and a sheath around the core, wherein the core comprises an impregnating agent and a multifilament strand comprising glass fibers each having a length substantially equal to the axial length of the pellet and substantially oriented in the axial length of the pellet, wherein the sheath comprises a thermoplastic polymer; and wherein the molding composition further comprises a filler.