Abstract: There is provided a carbon material capable of enhancing the capacity of a power storage device and battery characteristics such as rate characteristics and cycle characteristics. The carbon material is one having a graphene layered structure, in which: a BET specific surface area of the carbon material is 1 m2/g or more and 25 m2/g or less; and when a particle concentration of the carbon material and an integrated value of particle areas of the carbon material are measured by a flow-type particle image analyzer using an N-methyl-2-pyrrolidone solution containing 20 ppm of the carbon material, the particle concentration of the carbon material is 3,000 particles/?L or more and 50,000 particles/?L or less, and the integrated value of the particle areas of the carbon material is 1,000 mm2/mg or more and 10,000 mm2/mg or less.

Abstract: Provided is a carbon material that can enhance a battery characteristic represented by the cycle characteristic of an electricity storage device. A carbon material including a graphene layered structure, the carbon material being mixed with Si at a weight ratio of 1:1 to produce a mixture, the mixture having an X-ray diffraction spectrum having a ratio between a peak height a and a peak height b a/b of 0.2 or more and 10.

Abstract: Provided are a polymer article excellent in mechanical strength, toughness, and stretchability and a production method of the polymer article. The polymer article of the present invention is formed of a polymer material and is a polymer blank or a formed polymer body. The polymer article of the present invention has a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%. A method for producing a polymer article of the present invention includes: a heating step of heating the polymer material to a temperature of not lower than (Tm?70)° C. but lower than Tm(° C.) where Tm is the melting point (° C.) of the polymer material; and a compression step of cooling the polymer material heated in the heating step and compressing the polymer material in the course of the cooling to obtain a polymer article having a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%.

Abstract: Provided is an electret having high piezoelectric properties. An electret sheet of the invention is characterized in that it comprises a synthetic resin sheet is electrified by injecting electric charges thereinto, that the synthetic resin sheet comprises two types of synthetic resins incompatible with each other, and that these synthetic resins form a phase separated structure and are cross-linked through a polyfunctional monomer. Therefore, positive and negative charges in an apparently polarized state are present in the interfacial portions between the two types of synthetic resins incompatible with each other. By applying an external force to the electret sheet to deform it, the relative positions of these positive and negative charges are changed, and these changes cause a favorable electrical response. Therefore, the electret sheet has high piezoelectric properties.

Abstract: Provided is an electret having high piezoelectric properties. An electret sheet of the invention is characterized in that it comprises a synthetic resin sheet is electrified by injecting electric charges thereinto, that the synthetic resin sheet comprises two types of synthetic resins incompatible with each other, and that these synthetic resins form a phase separated structure and are cross-linked through a polyfunctional monomer. Therefore, positive and negative charges in an apparently polarized state are present in the interfacial portions between the two types of synthetic resins incompatible with each other. By applying an external force to the electret sheet to deform it, the relative positions of these positive and negative charges are changed, and these changes cause a favorable electrical response. Therefore, the electret sheet has high piezoelectric properties.

Abstract: A laminated body with surface layers having excellent abrasion resistance is disclosed. The laminated body is provided with a resin base material; a first layer laminated over at least part of the resin base material; and a second layer laminated on the second surface of the first layer opposite the first surface on which the resin base material is laminated. The first layer is formed by curing a first composition that contains: an inorganic polymer obtainable by hydrolytic condensation of inorganic polymer components including a silane compound represented by the following formula (1); Si(R1)p(OR2)4-p??(1) a water-soluble polyfunctional (meth)acrylate; and an active energy ray polymerization initiator, and the second layer is formed by curing a second composition containing a thermosetting organosiloxane. In the formula (1), R1 represents a C1-30 organic group containing a polymerizable double bond; R2 represents a C1-6 alkyl group; and p is 1 or 2.

Abstract: Provided are a polymer article excellent in mechanical strength, toughness, and stretchability and a production method of the polymer article. The polymer article of the present invention is formed of a polymer material and is a polymer blank or a formed polymer body. The polymer article of the present invention has a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%. A method for producing a polymer article of the present invention includes: a heating step of heating the polymer material to a temperature of not lower than (Tm?70)° C. but lower than Tm(° C.) where Tm is the melting point (° C.) of the polymer material; and a compression step of cooling the polymer material heated in the heating step and compressing the polymer material in the course of the cooling to obtain a polymer article having a crystallinity of not less than 50% but less than 90% and a tensile strain at fracture of not less than 60%.

Abstract: A layered body (1) is provided in which a first layer (3) is deposited at one side on at least one surface of a resin substrate (2), a second layer (4) is deposited on the other side of the first layer (3) opposite to the one side thereof at which the first layer (3) is deposited on the resin substrate (2), the first layer (3) is a first organic-inorganic hybrid layer containing a (meth)acrylic resin and a silane compound, and the second layer (4) is a second organic-inorganic hybrid layer obtained by curing a composition made of a solution obtained by hydrolysis and condensation using a composition which contains a silane compound (A) containing at least one epoxy group and represented by the following Formula (1), an aluminum alkoxide (B) represented by the following Formula (2) and a tetrafunctional silane compound (C) represented by the following Formula (3): Si(R1)p(OR2)4-p??Formula (1); Al(OR3)3??Formula (2); and Si(OR4)4??Formula (3).

Abstract: The present invention provides an active energy ray-curable composition that provides a cued product with excellent abrasion resistance and facilitates formation of a molded product having a high-hardness surface layer formed thereon. The active energy ray-curable composition contains: an inorganic polymer obtainable by hydrolytic condensation of inorganic polymer components including a silane compound; a water-soluble polyfunctional (meth)acrylate; and an active energy ray polymerization initiator. The silane compound is represented by the formula (1): Si(R1)p(OR2)4-p in which R1 represents a C1-30 organic group containing a polymerizable double bond; R2 represents a C1-6 alkyl group; p is 1 or 2; when p is 2, the R1s may be the same as or different from one another; and the R2s may be the same as or different from one another.