A laminate body is provided which contains a thin prepreg having a component (A) containing a matrix of reinforcing fiber, a component (B) containing a thermosetting resin, and a component (C) containing particles of a thermoplastic resin. When molded and cured out of autoclave, the laminate body achieves a fiber-reinforced composite having a low void ratio and providing excellent mechanical performance.

A thermoplastic aromatic polysulfone is obtained by polymerizing a dihalogeno compound (A) and a dihydric phenol (B). The ratio (Mw/Mn) between a number average molecular weight (Mn) and a weight average molecular weight (Mw) is at least 1.91, and the number average molecular weight (Mn) is at least 6,000 and less than 14,000, ##STR00001##
In (A) and (B), each of X and X independently represents a halogen atom; each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represents an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; each of n.sub.1, n.sub.2, n.sub.3 and n.sub.4 independently represents an integer of 0 to 4; and when n.sub.1, n.sub.2, n.sub.3 or n.sub.4 is an integer of 2 to 4, a plurality of R.sup.1, R.sup.2, R.sup.3 or R.sup.4 groups may be the same or different from each other.

A composition is used for producing novel types of foam in that they combine specifically good flame-retardant properties with a good elongation at break. These novel types of foam are produced from a blend of polyether sulphone (PES) and polyphenylene sulphone (PPSU).

Methods for producing 3D printing composite polymer materials for use in additive manufacturing processes are provided. The methods result in enhancing the material properties of the printing material by providing a uniform and smooth surface finish of the printing material and the nozzle extrudate for additive manufacturing processes, such as Fused Filament Fabrication. The method includes implementing impregnation techniques for combining carbon nanotubes or other nano-fillers, a polymer resin and a fiber material to produce a polymer material that can be processed into a printing material. Further, the method may include combining the carbon nanotubes or other nano-fillers and the polymer resin to form a masterbatch that may be further combined with the fiber material through an extrusion process. The method results in a printing material with enhanced material properties and smooth surface finish for the printing material and resulting nozzle extrudate for Fused Filament Fabrication.

Methods for producing 3D printing composite polymer materials for use in additive manufacturing processes are provided. The methods result in enhancing the material properties of the printing material by providing a uniform and smooth surface finish of the printing material and the nozzle extrudate for additive manufacturing processes, such as Fused Filament Fabrication. The method includes implementing impregnation techniques for combining carbon nanotubes or other nano-fillers, a polymer resin and a fiber material to produce a polymer material that can be processed into a printing material. Further, the method may include combining the carbon nanotubes or other nano-fillers and the polymer resin to form a masterbatch that may be further combined with the fiber material through an extrusion process. The method results in a printing material with enhanced material properties and smooth surface finish for the printing material and resulting nozzle extrudate for Fused Filament Fabrication.

A thermosetting resin composition at least including: [A] an epoxy resin containing two or more glycidyl groups; [B] a cyanate ester resin containing two or more cyanate groups; and [C] an amine compound; and satisfying the following conditions (1) and (2): (1) 0.25the number of moles of glycidyl groups in the thermosetting resin composition/the number of moles of cyanate groups in the thermosetting resin composition1.5; and (2) 0.05the number of moles of active hydrogen contained in the amino groups in the thermosetting resin composition/the number of moles of cyanate groups in the thermosetting resin composition<0.5; and a prepreg and a fiber reinforced composite material using the thermosetting resin composition. Provided are a thermosetting resin composition having excellent mechanical properties and heat resistance in a high-temperature environment after moisture absorption, and having excellent reactivity that allows curing in a short time; a prepreg prepared by impregnating a reinforced fiber with a thermosetting resin composition, which prepreg has excellent handling ability (tackiness properties) at room temperature; and a fiber reinforced composite material including a thermosetting resin composition and a reinforced fiber.

A thermoplastic aromatic polysulfone is obtained by polymerizing a dihalogeno compound (A) and a dihydric phenol (B). The ratio (Mw/Mn) between a number average molecular weight (Mn) and a weight average molecular weight (Mw) is at least 1.80 and less than 1.90, and the number average molecular weight (Mn) is at least 6,000 and less than 14,000. ##STR00001##
In (A) and (B), each of X and X independently represents a halogen atom; each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 independently represents an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms; each of n.sub.1, n.sub.2, n.sub.3 and n.sub.4 independently represents an integer of 0 to 4; and when n.sub.1, n.sub.2, n.sub.3 or n.sub.4 is an integer of 2 to 4, a plurality of R.sup.1, R.sup.2, R.sup.3 or R.sup.4 groups may be the same or different from each other.

A resin infusion method that includes: (a) heating a mixture of solid amine compounds until all amine compounds are melted; (b) cooling the mixture of melted amine compounds to a temperature of 35 C. or lower to form an amine blend (A); (c) combining the amine blend (A) with a thermosettable resin (B), which includess one or more epoxy monomers, at a temperature effective for forming a liquid resin composition; and (d) infusing a fibrous preform with the liquid resin composition. The amine blend (A) contains an aromatic diamine represented by Structure 1 or 2:

##STR00001##

In an epoxy resin composition, per 100 parts by mass of an epoxy resin component containing from 60 to 85 parts by mass of N,N,N,N-tetraglycidyldiaminodiphenylmethane resin (A) having a viscosity at 50 C. of 6000 mPa.Math.s or less and from 15 to 40 parts by mass of a liquid bisphenol A epoxy resin (B) having a viscosity at 25 C. of 20000 mPa.Math.s or less, from 8 to 15 parts by mass of a thermoplastic resin (C), from 2 to 10 parts by mass of elastomer microparticles (D) having an average particle diameter of 1000 nm or less, and from 0.5 to 2.5 parts by mass of silica microparticles (E) having an average particle diameter of 1000 nm or less are blended.

Disclosed are co-continuous immiscible polymer blends of a polysulfone and a polyaryletherketone optionally reinforced with carbon fiber. A method of preparing such a co-continuous immiscible polymer blend of a polysulfone and a polyaryletherketone reinforced with a carbon fiber is also disclosed.