The Doshisha

Tatsuya Tanaka

Yukinori Sano

Kenta Masuyama

Koki Matsumoto

A multi-screw kneader is configured to exhibit an extensional flow function before and behind holes of a disk-shaped segment and a method for producing a nano-composite uses the multi-screw kneader. The multi-screw kneader includes a plurality of kneading screws and the disk-shaped segment in a barrel. The disk-shaped segment partitions the inside of the barrel downstream of a part for supplying a kneading material and includes shaft receiving parts through which rotating shafts of the kneading screws are to rotatably pass and the holes are defined in a periphery of the shaft penetrating parts and are configured to serve as flow channels of the kneading material. The method for producing the nano-composite includes charging nanoparticles as a resin additive using the multi-screw kneader.

Multi-screw kneader and method for producing nano-composite using said multi-screw kneader, and disk-shaped segment used for said kneader and said method

There are provided a resin composition that is suitable for the production of a flame-retardant molded article and that can provide high flame retardancy even with a small amount of flame retardant added, and a flame retardancy determination method for determining the flame retardancy of a resin composition. The resin composition of the present invention contains a thermoplastic resin, a cellulosic material, and a phosphate flame retardant and satisfies relational expressions (1) and (2) (where in expressions (1) and (2), T, T, and Tare temperatures at weight loss rate peaks in thermogravimetric analysis, Tis a temperature (&#xb0; C.) at a weight loss rate peak of the thermoplastic resin, Tis a temperature (&#xb0; C.) at a weight loss rate peak of the cellulosic material, and Tis a temperature (&#xb0; C.) at a weight loss rate peak of the resin composition. When the resin composition has two weight loss rate peaks, Tis a temperature at a peak on a lower temperature side).

Growing community of inventors

Kyoto, Japan

Tatsuya Tanaka