A fiber-reinforced plastic joined body is provided, in which a fiber-reinforced molded article (X) containing carbon fibers and a thermoplastic resin and having a joining surface (x), and a thermoplastic resin member (Y) having a joining surface (y) are welded via the joining surfaces (x) and (y) by applying ultrasonic to the molded article (X), and in which: (1) a maximum value of tan by viscoelastic measurement of the molded article (X) is less than 70% of a maximum value of tan by viscoelastic measurement of the thermoplastic resin contained in the molded article (X) within a range of a glass transition temperature 100 C. of the thermoplastic resin contained in the molded article (X), (2) at least one of the joining surfaces (x) and (y) has an energy director, and (3) an application surface of the molded article (X) to which ultrasonic sound is applied is smooth.

There is provided a joined body in which two or more members Yi including a fitting hole are fastened, in which a fastening rod including reinforcing fibers and a thermoplastic resin is positioned in the fitting hole, the fastening rod is caulked by heat, and the members Yi are caulking-fastened.

There is provided a joined body in which two or more members Yi including a fitting hole are fastened, in which a fastening rod including reinforcing fibers and a thermoplastic resin is positioned in the fitting hole, the fastening rod is caulked by heat, and the members Yi are caulking-fastened.

An object is to provide a polyether nitrile molding material having high flowability during melt molding. As a solution, a polyether nitrile molding material having a melt flow rate (MFR) in the range of 2 to 50 g/10 min as measured at 390 C. under a load of 5000 g in accordance with ISO 1133 is provided.

An article is molded from a thermoplastic composition including particular amounts of a poly(phenylene ether), a poly(butylene terephthalate), an impact modifier, a reactive compatibilizer, and a conductive filler including carbon nanotubes. The article is an electrostatically paintable automotive component, and exhibits a desirable combination of good conductivity and thermal stability. Methods of making the molded article are also disclosed.

Compositions include from about 50 wt % to about 85 wt % of a liquid crystal polymer resin, from about 0.1 wt % to about 15 wt % of a polyetherimide polymer, from about 0.05 wt % to about 8 wt % of a compatibilizer, and from about 2 wt % to about 25 wt % of a mineral filler. A 50 mm60 mm sample having a thickness of 0.6 mm molded from the composition exhibits an anti-dent performance characterized by a dent depth from 30-40 micrometers as measured using a three dimensional surface profiler; the sample is tested using a drop tester with a 1.6 mm diameter steel ball having a weight of 50 grams dropped from a height of 50 mm. Articles including the composition, including components of a mobile compact camera module, are also described.

A method is provided during which a thermoplastic rib is arranged with a thermoplastic spar. A first flange of the thermoplastic rib is abutted against the thermoplastic spar. The first flange of the thermoplastic rib is ultrasonic welded to the thermoplastic spar using a tilted ultrasonic horn. A centerline of the tilted ultrasonic horn is angularly offset from the first flange of the thermoplastic rib by an acute angle during the ultrasonic welding.

A method is provided during which a thermoplastic rib is arranged with a thermoplastic spar. A first flange of the thermoplastic rib is abutted against the thermoplastic spar. The first flange of the thermoplastic rib is ultrasonic welded to the thermoplastic spar using a tilted ultrasonic horn. A centerline of the tilted ultrasonic horn is angularly offset from the first flange of the thermoplastic rib by an acute angle during the ultrasonic welding.

An object is to provide a polyether nitrile molding material that exhibits high flowability during molding. As a solution, a method for producing a polyether nitrile molding material, the method including molding a polyether nitrile having a bulk density of 0.3 to 1.0 g/mL, is provided.

Compositions include from about 50 wt % to about 85 wt % of a liquid crystal polymer resin, from about 0.1 wt % to about 15 wt % of a polyetherimide polymer, from about 0.05 wt % to about 8 wt % of a compatibilizer, and from about 2 wt % to about 25 wt % of a mineral filler. A 50 mm60 mm sample having a thickness of 0.6 mm molded from the composition exhibits an anti-dent performance characterized by a dent depth from 30-40 micrometers as measured using a three dimensional surface profiler; the sample is tested using a drop tester with a 1.6 mm diameter steel ball having a weight of 50 grams dropped from a height of 50 mm. Articles including the composition, including components of a mobile compact camera module, are also described.