The present invention provides a prepreg that has high impact resistance despite being an all-carbon-fiber FRP (CFRP), the prepreg moreover enabling a molding time to be set to five minutes or less and making it possible to reduce molding costs. This prepreg is obtained by impregnating carbon fiber with a matrix resin comprising a mixture of a thermoplastic resin, a thermosetting resin, and a curing agent, wherein: the thermoplastic resin is a phenoxy resin; the thermosetting resin is a urethane acrylate resin; the thermoplastic resin and the thermosetting resin are compounded in a mass ratio of 15:85-35:65 (thermoplastic resin/thermosetting resin); and the curing agent causes cross-linking to occur due to a radical polymerization reaction, and is formed so as to include first and second peroxides having mutually different initiation temperatures, initiation of the second peroxide starting at a temperature at which termination of the first peroxide occurs.

Embodiments relate to a polyimide-based composite film, which comprises a base film comprising a polyimide-based resin; and a functional layer disposed on the base film, wherein when the side of the functional layer located opposite to the side in contact with the base film is referred to as a first side and when the side of the base film in contact with the functional layer is referred to as a second side, the leveling index represented by Equation 1 is less than 0.75.

There is provided a carbon fiber sheet molding composition including a vinyl ester resin type system. The carbon fiber distribution is random. The carbon fiber length is from about 0.5 inches to two inches. The carbon fiber loading is from about 35% to 65%, and includes epoxy sized carbon fiber and vinyl sized carbon fiber effective to achieve predetermined significant increase in desired mechanical properties.

The present invention relates to a method of activating an organic coating to enhance adhesion of the coating to a further coating and/or to other entities comprising applying a solvent and a surface chemistry and/or surface topography modifying agent to the organic coating. The invention also relates to a coated substrate having an activated coating, wherein the adhesion of the coating to a further coating and/or other entities has been enhanced by application of a solvent and a surface chemistry and/or surface topography modifying agent to the coating. The invention further relates to an activation treatment for an organic coating to enhance adhesion of the coating to a further coating and/or to other entities comprising a solvent and a surface chemistry and/or surface topography modifying agent and a method for the preparation of the activation treatment.

The present invention provides a coating composition comprising a binder, a rheology modifier that acts to increase the viscosity of the coating composition and a particulate component able to remove a volatile organic compound from an environment in contact with the coating composition.

A gas barrier film including: a plastic substrate; an atomic layer deposition film disposed on the plastic substrate; and an overcoat layer disposed on the atomic layer deposition film. The overcoat layer contains a thermoplastic resin, and has a glass transition temperature in a range of 20 C. or more and 100 C. or less.

The present invention provides a prepreg that has high impact resistance despite being an all-carbon-fiber FRP (CFRP), the prepreg moreover enabling a molding time to be set to five minutes or less and making it possible to reduce molding costs. This prepreg is obtained by impregnating carbon fiber with a matrix resin comprising a mixture of a thermoplastic resin, a thermosetting resin, and a curing agent, wherein: the thermoplastic resin is a phenoxy resin; the thermosetting resin is a urethane acrylate resin; the thermoplastic resin and the thermosetting resin are compounded in a mass ratio of 15:85-35:65 (thermoplastic resin/thermosetting resin); and the curing agent causes cross-linking to occur due to a radical polymerization reaction, and is formed so as to include first and second peroxides having mutually different initiation temperatures, initiation of the second peroxide starting at a temperature at which termination of the first peroxide occurs.

A water-barrier laminated film (10) including a plastic film (A) that has an inorganic barrier layer (A1) on the surface thereof and a water-trapping layer (B), characterized in that: between the plastic film (A) and the water-trapping layer (B), an isocyanate type coating (C) is provided that contains, as a film-forming component, an isocyanate type polymer obtained by reacting an isocyanate as the reaction component; and the water-trapping layer (B) is formed on the isocyanate type coating (C) that is formed as the underlying layer.

The present disclosure relates to a laminate film for packaging. A laminate film according to an aspect of the present disclosure includes: a resin substrate having a heat sealing surface that constitutes one outermost surface of the laminate film; a coating layer made of a non-metallic material; and an underlayer disposed between the resin substrate and the coating layer. The resin substrate includes a first layer that is made of olefin copolymer and constitutes the heat sealing surface, and a second layer made of polypropylene, and the first and second layers are laminated and biaxially stretched.

Prepared is a film having at least one surface having a kurtosis (Rku) of greater than or equal to 2 and total height (Rt) of greater than or equal to 1m.

The dynamic friction coefficient of the surface may be less than or equal to 0.25, and the relative dynamic friction coefficient may be less than or equal to 0.3.

The film includes a low-friction layer formed of a cured product of a curable composition including a curable resin, and the surface of the low-friction layer may have an Rku and an Rt within the range mentioned above.

The curable resin may include at least one selected from the group consisting of a (meth)acrylic polymer having a polymerizable group, a urethane (meth)acrylate, and a silicone (meth)acrylate.

The curable composition may further include a cellulose ester.

The curable composition may be free of fine particles.

The film can reduce the dynamic friction coefficient even if the surface of the film is formed of a wide range or materials.