An aqueous treatment agent for preparing a cord by treating an untreated yarn for a power transmission belt includes at least a first aqueous treatment agent. The first aqueous treatment agent contains an epoxy resin (A), a polycarbonate polyol (B), and a blocked polyisocyanate (C). The epoxy resin (A) may contain a bisphenol type epoxy resin (A1). The polycarbonate polyol (B) may contain a polycarbonate diol (B1). The blocked polyisocyanate (C) may contain at least one blocked polyisocyanate selected from the group consisting of an aliphatic polyisocyanate or derivatives thereof and an aromatic polyisocyanate and having a dissociation temperature of 120 C. to 180 C.

Various embodiments disclosed relate to an aqueous dispersion. The aqueous dispersion includes a plurality of particles. Each of the particles includes a polycarbonate component. Individual particles of the polycarbonate component have substantially the same size. The dispersion further includes a plasticizer component and a surfactant component. In an embodiment, a sized carbon fiber tow can comprise: a polycarbonate sizing on a carbon fiber tow, wherein the polycarbonate sizing has a concentration of volatile organic compounds less than 10 ppm, preferably less than 5 ppm, or less than 2 ppm; and an average sizing content of at least 0.5 wt % of the carbon fiber tow with a coefficient of variation less than 15%, preferably less than 11%.

Various embodiments disclosed relate to an aqueous dispersion. The aqueous dispersion includes a plurality of particles. Each of the particles includes a polycarbonate component. Individual particles of the polycarbonate component have substantially the same size. The dispersion further includes a plasticizer component and a surfactant component. In an embodiment, a sized carbon fiber tow can comprise: a polycarbonate sizing on a carbon fiber tow, wherein the polycarbonate sizing has a concentration of volatile organic compounds less than 10 ppm, preferably less than 5 ppm, or less than 2 ppm; and an average sizing content of at least 0.5 wt % of the carbon fiber tow with a coefficient of variation less than 15%, preferably less than 11%.

A stab proof material in roll form comprising a matrix distributed over both the surfaces of a textile structure and forming a surface film totally interpenetrated in said textile structure. The production method comprises the steps of: unwinding an aramid fabric on conveyor means; distributing an amorphous thermoplastic matrix starting from a micrometric powder, over both surfaces of the aramid fabric as it is unwound; passing the material through a first hot section and then through a second relatively cold section; the first section applies a temperature and a pressure such as to form an amorphous thermoplastic film on the fabric; the second section facilitates detachment of the coated material from the conveyor means. The plant comprises a conveyor belt on which an aramid fabric is unwound; a powder scattering station adapted to distribute a micrometric powder on the aramid fabric as it is unwound on the conveyor belt; a system of double belts in contact through which the fabric is conveyed; the system of double belts in contact defines a first hot section and a second relatively cold section; the first section applies a temperature and a pressure functional to the formation of an amorphous thermoplastic film on the fabric; the second section facilitates detachment of the fabric.

A stab proof material in roll form comprising a matrix distributed over both the surfaces of a textile structure and forming a surface film totally interpenetrated in said textile structure. The production method comprises the steps of: unwinding an aramid fabric on conveyor means; distributing an amorphous thermoplastic matrix starting from a micrometric powder, over both surfaces of the aramid fabric as it is unwound; passing the material through a first hot section and then through a second relatively cold section; the first section applies a temperature and a pressure such as to form an amorphous thermoplastic film on the fabric; the second section facilitates detachment of the coated material from the conveyor means. The plant comprises a conveyor belt on which an aramid fabric is unwound; a powder scattering station adapted to distribute a micrometric powder on the aramid fabric as it is unwound on the conveyor belt; a system of double belts in contact through which the fabric is conveyed; the system of double belts in contact defines a first hot section and a second relatively cold section; the first section applies a temperature and a pressure functional to the formation of an amorphous thermoplastic film on the fabric; the second section facilitates detachment of the fabric.

One example provides a composite. The composites includes a core layer comprising a thermoplastic polymer and having a first and a second sides opposite to each other; a first set of two layers disposed over at least a portion of the core layer respectively on the first and the second sides, each layer of the first set including carbon fibers aligned in a first direction in a plane; and a second set of two layers disposed over at least a portion of the first set of two layers respectively on the first and the second sides, each layer of the second set including carbon fibers aligned in a second direction perpendicular to the first direction in the plane In the plane, the composite has a length and a width, the length larger than the width and parallel to the second direction.

One example provides a composite. The composites includes a core layer comprising a thermoplastic polymer and having a first and a second sides opposite to each other; a first set of two layers disposed over at least a portion of the core layer respectively on the first and the second sides, each layer of the first set including carbon fibers aligned in a first direction in a plane; and a second set of two layers disposed over at least a portion of the first set of two layers respectively on the first and the second sides, each layer of the second set including carbon fibers aligned in a second direction perpendicular to the first direction in the plane In the plane, the composite has a length and a width, the length larger than the width and parallel to the second direction.

A method of manufacturing a penetration-resistant article that includes a textile fabric made from aramid fibers finished with finish solids. The finish solids include a carbonic acid polyester. The penetration-resistant article can be a fragment protection mat, a bullet-proof vest, a flak jacket, a stab-resistant vest, or a combination thereof.

A method of manufacturing a penetration-resistant article that includes a textile fabric made from aramid fibers finished with finish solids. The finish solids include a carbonic acid polyester. The penetration-resistant article can be a fragment protection mat, a bullet-proof vest, a flak jacket, a stab-resistant vest, or a combination thereof.

A coated textile substrate containing a textile substrate having an inner side and an outer side and a continuous coating on at least the one side of the textile substrate. The continuous coating comprises a mixture of polyester polyurethane and polycarbonate polyurethane.