The Furukawa Electric Co., Ltd.

Yukihiro Ikura

Kenichi Suyama

Jae Kyung Kim

Isao Tomomatsu

Suzune Ito

Hiroki Tanaka

Yasuo Nakajima

Makiko Nakano

Mayu Satake

Motoko Yoshizaki

Hidekazu Hara

Takahiro Iida

Yasumasa Morishima

Jirou Hiroishi

Yousuke Kokubo

Takayori Ito

Yoichiro Negishi

An organic fiber-reinforced resin formed body that contains a resin and a cellulose fiber, wherein the resin formed body has a density of 0.65 g/cmor less, and a method for producing the same.

Organic fiber-reinforced resin formed body and method for producing the same

A cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having respective diffraction peaks observed at positions of a scattering vector s of 1.61±0.1 nm, 1.92±0.1 nm, and 3.86±0.1 nmin a wide-angle X-ray diffraction measurement, and is characterized by having ΔT calculated by the following formula (1) of 40.0° C. or more; and a cellulose fiber-reinforced polypropylene resin formed body that is a resin formed body having the above diffraction peaks and is characterized by having ΔTand ΔTexpressed by the following formulae (2) and (3) and satisfying ΔT<ΔT; and a producing method of these.Δ  (1)Δ  (2)Δ  (3)

Cellulose fiber-reinforced polypropylene resin formed body and method for producing the same

A resin formed body obtained from a resin composition that contains a polypropylene resin and a cellulose fiber, the polypropylene resin partially containing an acid modified polypropylene resin,

Resin formed body and resin composition

A resin formed body, having a diffraction peak at a position where a scattering vector s is 3.86&#xb1;0.1 nmin a wide-angle X-ray diffraction measurement, and having at least one melting peak each at respective regions of 129&#xb0; C. or lower and 159&#xb0; C. or higher in a differential scanning calorimetry, and with which a peak of tan &#x3b4; is observed in a range of &#x2212;40&#xb1;10&#xb0; C. in a dynamic viscoelastic measurement, and a resin composition suitable for preparing the same.

A thermoplastic composite material comprising, a fiber bundle having a polypropylene emulsion impregnated therein and having a plurality of reinforcing fibers lined up in a predetermined direction, and satisfies the following conditions (1) to (4); and a formed body: (1) A void content of the thermoplastic composite material is 3% or less, (2) A fiber volume fraction of the thermoplastic composite material is 40% or more and 70% or less, (3) A bending strength of a laminated body, in which a plurality of layers of the thermoplastic composite material has been laminated so that the reinforcing fibers would be lined up in one direction, when bent in the fiber-axis direction and measured in conformity to JIS K7074, is 250 MPa or more, and a bending elastic modulus of the laminated body is 90 GPa or more, and(4) A variation coefficient of the bending strength, when measured at N=5 or more and calculated in conformity to JIS K7074, is within 7%.

Thermoplastic composite material and formed body

A laminated body, containing a fiber-reinforced resin, in which a fiber-reinforced thermoplastic resin layer () containing fiber bundle of reinforcing fibers and a first thermoplastic resin, and a resin layer () containing a second thermoplastic resin, are alternately laminated, to form the fiber-reinforced resin, and the ratio of the indentation elastic modulus Eof the first thermoplastic resin portion of the laminated body with respect to the indentation elastic modulus Eof the second thermoplastic resin is 1.5 or more and 5.0 or less;

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Tokyo, Japan

Yukihiro Ikura