Mitsubishi Heavy Industries Limited

Norio Miwa

Shunichi Hayashi

Noriya Hayashi

Toshikatsu Nohara

Yasuhiro Akita

Hiroshi Mizutani

Izumi Tanaka

Akio Yagi

Takashi Nitta

Tadao Takahashi

A prepreg of FRP (fiber reinforced plastic) having with (i) a matrix resin composition containing a bifunctional isocyanate and/or a trifunctional isocyanate, a polyol and a bifunctional chain extender having two active hydrogen groups at a molar ratio, as a functional group, of isocyanate:polyol:chain extender=5.0 to 1.0:1.0:4.0 to 0, or containing a bifunctional isocyanate and/or a trifunctional isocyanate and a polyol at a molar ratio, as a functional group, of liquid isocyanate:polyol=0.9 to 1.1:1.0; and (ii) a fibrous material. A production process of the prepreg. According to the present invention, the prepreg has a sufficient pot life and permits convenient production of an FRP molding.

Prepreg for fiber reinforced plastic and production process thereof

Provided are a shape memory polymer composition, which comprises a bifunctional isocyanate and/or a trifunctional isocyanate, and a polyol having an average molecular weight of from 100 to 550, with a molar ratio in terms of functional groups of isocyanate:polyol=0.9 to 1.1:1.0; FRP having the shape memory polymer and a fibrous material; and a production process of the FRP comprising impregnating the fibrous material with, as a matrix resin, the shape memory polymer composition and curing. According to the present invention, the shape memory polymer composition has an extended pot life and FRP has excellent inflatability.

Shape memory polymer composition, fiber reinforced plastic and production process thereof

Provided are a matrix resin composition for fiber reinforced plastic, which comprises a bifunctional or trifunctional liquid diisocyanate, a bifunctional polyol and a bifunctional chain extender containing an active hydrogen group, with a molar ratio of the functional groups of the diisocyanate, polyol and chain extender of 5.0 to 1.0:1.0:4.0 to 0, respectively; and a process for producing fiber reinforced plastic, which comprises impregnating a fibrous material with the resin composition and then curing. The present invention makes it possible to produce a molding containing fibers densely, having excellent strength and inflatability, in the production of an FRP molding by using a thermosetting resin having an extended pot life.

Matrix resin composition for fiber-reinforced plastics and process for production of fiber-reinforced plastics

A humidifier is superior in terms of hygiene, simple in terms of maintenance, humidity is easily adjusted, and energy consumption is low. The humidifier uses, as a moisture permeable membrane, a moisture-permeable polyurethane obtained by using, as raw materials, at least an isocyanate component, a diol as a chain extender, and polyethylene glycol as a polyol component, and reacting these raw materials.

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Aichi-ken, Japan

Norio Miwa