A method of making a flexible pipe layer, which method comprises: commingling polymer filaments and carbon fibre filaments to form an intimate mixture, forming yarns of the commingled filaments, forming the yarns into a tape, and applying the tape to a pipe body to form a flexible pipe layer.

Polypropylene composition comprising a polypropylene base material, a carbon fibre and an adhesion promoter with an excellent impact/stiffness balance, its preparation, articles comprising the composition and the use of the composition.

A method of manufacturing a metal-clad laminate and uses of the same are provided. The method comprises the following steps: (a) impregnating a reinforcement material with a first fluoropolymer solution, and drying the impregnated reinforcement material under a first temperature to obtain a first prepreg; (b) impregnating the first prepreg with a second fluoropolymer solution, and drying the impregnated first prepreg under a second temperature to obtain a second prepreg; and (c) laminating the second prepreg and a metal-clad to obtain a metal-clad laminate, wherein the first fluoropolymer solution has a first fluoropolymer, the second fluoropolymer solution has a second fluoropolymer, and the first fluoropolymer and the second fluoropolymer are different.

A fiber reinforced thermoplastic resin molded article contains inorganic fibers (A), organic fibers (B), and a thermoplastic resin (C), the fiber reinforced thermoplastic resin molded article containing 5 to 45 parts by weight of the inorganic fibers (A), 1 to 45 parts by weight of the organic fibers (B), and 10 to 94 parts by weight of the thermoplastic resin (C), based on 100 parts by weight of the total of the inorganic fibers (A), the organic fibers (B), and the thermoplastic resin (C), the inorganic fibers (A) in the fiber reinforced thermoplastic resin molded article having a weight average fiber length (L.sub.wa) of 0.01 mm or more and 3 mm or less, the organic fibers (B) having a weight average fiber length (L.sub.wb) of more than 4 mm and 20 mm or less.

The present invention aims to provide an epoxy resin composition for a fiber-reinforced composite material that maintains low viscosity during injection into reinforcing fibers to realize good impregnating and also has high toughness and high heat resistance and also aims to provide a fiber-reinforced composite material produced therefrom. Also provided is a molding method for a fiber-reinforced composite material including at least a reinforcing fiber [A] and a cured product of an epoxy resin composition [B], wherein the epoxy resin composition [B] includes the components [a], [b], and [c] specified below, and the epoxy resin composition [B] is cured in such a manner that the absorbance ratio Da/(Da+Db) is in the range of 0.4 to 1 in producing the fiber-reinforced composite material: [a] an epoxy resin having at least two oxirane groups in the molecule, [b] an epoxy resin curing agent having at least two isocyanate groups in the molecule, and [c] a catalyst.

Disclosed is a new composite material comprising nanocellulose and hemp or a hemp-derived component, such as pure hemp, hemp bast fibers, hemp inner fibers, hemp shives, hemp leaves, hemp seeds, or ground hemp. The nanocellulose may be hydrophobic or hydrophilic, and may include cellulose nanocrystals, cellulose nanofibrils, cellulose microfibrils, or a combination thereof. This invention provides construction blocks or panels; engineered parts; fire-resistant objects; coatings; containers; textile compositions; and fabric materials, for example. The composite material may also include one or more additives to modify mechanical, thermal, chemical, and/or electrical properties. The addition of nanocellulose can improve the mechanical properties of hemp-containing concrete mixtures to improve compressive strength for construction purposes.

Glass fibers formed from the inventive composition may be used in applications that require high stiffness and have a specific modulus between 34 and 40 MJ/kg. Such applications include woven fabrics for use in forming wind turbine blades and aerospace structures.

The invention relates to a moulded article (3) comprising a basic material (1), wherein the basic material (1) contains a wax, and also a filler, wherein the filler comprises or consists of a mineral filler and/or a fibrous material, wherein the wax is contained in the basic material (1) with a content of between 3% by weight and 60% by weight, wherein the filler is contained in the basic material (1) with a content of between 40% by weight and 97% by weight, wherein the moulded article (3) comprises a moulded element (2), and wherein the moulded element (2) comprises or consists of a fibrous material. The invention also relates to a process for producing a moulded article (3).

The present disclosure is directed to provide a reinforced resin composition excellent in mechanical strength at elevated temperatures and a molded product including such a reinforced resin composition. A reinforced resin composition of the present disclosure includes (A) a polyamide; (B) a polyamide; (C) a polyphenylene ether; and (D) an inorganic filler, wherein a mass ratio of the component (C) with respect to 100 parts by mass of a sum of the component (A), the component (B), and the component (C) is from 20 to 50 parts by mass, ΔH.sub.TcMt is 10 J/g or more, and ΔH.sub.MpMt is 35 J/g or less.

Composite materials are described herein. The composite materials include a polymer matrix comprising at least one fluorinated homo- or copolymer and continuous fibers dispersed within the polymer matrix. The continuous fibers are present within the composite material in an amount between about 10 wt % and about 90 wt % of a weight of the composite material. The composite materials also include a filler dispersed within the polymer matrix. The filler is present within the composite material in an amount between about 5 wt % and about 25 wt % of an amount of the polymer matrix.