Resin transfer molding device and resin transfer molding method
AssigneeMitsubishi Heavy Industries, Ltd.
InventorsNoriya Hayashi, Hiroshi Mizuno, Koichi Hasegawa, Kazuo Ota
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Abstract
A resin transfer molding (RTM) molding device is designed to mold a fiber-reinforced plastic (FRP) molded body by injecting a resin composition into a mold and by impregnating the molded body therewith. The resin composition is a chain curing polymer (CCP). A CCP accommodating layer is disposed adjacent to an outer side of the molded body. The layer contains the CCP. The layer is provided with a Vf limit value, the value defined by the curing characteristics of the CCP and the characteristics of dissipation of heat from the CCP to the exterior. An element for separating the molded body is disposed between the body and the layer.
Claims14
A resin transfer molding (RTM) device comprising:
- a mold having an interior holding a molded body made of a reinforcement fiber material and holding at each of opposite tabular surfaces of the molded body a hollow chain curing polymer (CCP) accommodating layer having a thickness of approximately 0.5 mm to 20 mm, a heat insulating member positioned between each CCP accommodating layer and the mold, and a separating element positioned between the molded body and each CCP accommodating layer;
- a resin injection line injecting CCP resin into the interior of the mold to impregnate the molded body and to completely fill each CCP accommodating layer;
- a radiation source initiating curing of said injected resin;
- and
- a suction line decreasing pressure of the interior of the mold,
- wherein CCP resin curing in each CCP accommodating layer generates heat maintaining conditions allowing for a chain curing reaction of the injected resin to proceed uninterrupted to completion so as to obtain a fiber-reinforced plastic (FRP) molded body, and
- wherein the FRP molded body has a fiber volume content (Vf) limit value depending on curing characteristics of the CCP resin and on heat dissipation characteristics of the CCP resin to outside of the mold.
A resin transfer molding (RTM) device comprising:
- a mold having an interior holding a molded body made of a reinforcement fiber material and holding at each of opposite tabular surfaces of the molded body a hollow chain curing polymer (CCP) jacket having a thickness of approximately 0.5 mm to 20 mm, a separating element positioned between the molded body and each CCP jacket, and a heat insulating member positioned between each CCP jacket and the mold;
- a resin injection line injecting CCP resin into the interior of the mold to impregnate the molded body and to completely fill each CCP accommodating layer;
- a radiation source initiating curing of said injected resin;
- and
- a suction line decreasing pressure of the interior of the mold,
- wherein CCP resin curing in each CCP jacket generates heat maintaining conditions allowing for a chain curing reaction of the injected resin to proceed uninterrupted to completion so as to obtain a fiber-reinforced plastic (FRP) molded body,
- wherein each separating element, CCP jacket, and insulating member are layered on each other to form a mold layer body,
- wherein the interior of the mold, adjacent to one side of the mold layer body, has a CCP resin inlet connected to the resin injection line,
- wherein the interior of the mold, adjacent to another side of the mold layer body, is connected to the suction line, and
- wherein the FRP molded body has a fiber volume content (Vf) limit value depending on curing characteristics of the CCP resin and on heat dissipation characteristics of the CCP resin to outside of the mold.
Dependencies are inferred from the claim text.