Toray Industries, Inc.

Toray Engineering Company, Limited

Shigeru Kawashima

Atsuki Tsuchiya

Satoshi Matsumoto

Yukitane Kimoto

Naoya Ouchiyama

Hiroshi Kiyama

Daisuke Nagamatsu

Tadashi Watanabe

Junpei Takahashi

Jumpei Takahashi

Yuugo Enomoto

Chiasa Kitani

A fiber-reinforced composite molded article which is obtained by molding reinforcing fibers and an epoxy resin, while containing a silicone oil as an internal mold release agent, and which is characterized in that the fragment ion intensity ratio A/B as detected in case where the molded article surface is analyzed by time-of-flight secondary ion mass spectrometry is expressed by the relationship of 3≤A/B≤20. A: The intensity of a fragment ion that has the highest intensity among the fragment ions derived from the silicone oil. B: The intensity of a fragment ion that has the highest intensity among the fragment ions derived from the epoxy resin. A fiber-reinforced resin molded article according to the present invention is capable of achieving high productivity and high quality by effectively exhibiting releasability from a mold with a small addition amount of a mold release agent without using an external mold release agent, while being capable of exhibiting high adhesion to other members without requiring a special surface treatment such as sanding.

Internal mold release agent-containing fiber-reinforced composite molded article

Provided are a fiber-reinforced composite molded article prepared by heat-curing, as a molding material of a fiber-reinforced resin material, a resin composition to which an internal mold release agent is added, the fiber-reinforced composite molded article being capable of effectively producing mold releasability even with a small amount of the mold release agent added, and being capable of achieving high productivity, and a method of forming the fiber-reinforced composite molded article. A fiber-reinforced composite molded article prepared by curing reinforcing fibers and a resin composition, the resin composition including an internal mold release agent, wherein the value obtained by normalizing a Poisson-corrected ion intensity derived from the internal mold release agent detected on the surface of the fiber-reinforced composite molded article, by the Poisson-corrected gross positive secondary ion intensity detected in the predetermined area is higher than 0.1, and a molding method therefor.

Fiber-reinforced composite molded article and method for molding same

A method of producing a resin-impregnated fiber bundle roll body includes unwinding a fiber bundle from a bobbin; winding the fiber bundle on a winding core rotating around a fixed axis through a movable winding head to prepare a product; and leading the fiber bundle taken off in the unwinding to the winding between the unwinding and winding, wherein the leading or winding includes a resin impregnating the fiber bundle, and the winding includes a fiber content calculation of a fiber content in a layer of the fiber bundle on the winding core of an intermediate product to control one according to the fiber content: a resin adhesion amount in the resin adhesion operation; a winding tension of the fiber bundle applied to the intermediate product; a removal amount of a surplus resin layer on an outer surface of the intermediate product; and a resin viscosity in the intermediate product.

Method of producing resin-impregnated fiber bundle roll body

A process for producing a resin-impregnated fiber bundle includes an unwinding step in which a resin-unimpregnated fiber bundle is unwound, a resin impregnation step in which the fiber bundle is passed through an impregnation bath filled with a resin, and an impregnation acceleration step in which after the resin impregnation step, the resin is permeated into the fiber bundle, at least the impregnation acceleration step being performed in a decompression space having a pressure lower than atmospheric pressure. It is possible to produce a resin-impregnated fiber bundle using a decompression space for which decompression can be achieved with a simple device and in which the airtightness is easy to maintain and which has been configured so as to result in satisfactory working efficiency.

Process for producing resin-impregnated fiber bundle

An FRP panel for an automobile, comprising a panel element to which a difference in rigidity and/or a difference in strength is provided between a first FRP layer on a first surface side and a second FRP layer on a second surface side on the opposite side of the first surface. The FRP panel for the automobile having a crushable structure suitable for absorbing impact can be realized, and the impact on a pedestrian in collision can be suppressed by properly absorbing the impact to protect the pedestrian.

Growing community of inventors

Nagoya, Japan

Shigeru Kawashima