Abstract:
Embodiments herein relate to a prepreg comprising a thermosetting resin, and reinforcing fibers in the thermosetting resin, wherein when the prepreg is cured in vacuum bag only conditions, and a method of making the same. The method also applies for autoclave processing. Embodiments also relate to a cured fiber reinforced composite material made by thermally curing the prepreg.
Abstract:
A fiber reinforced polymer composition is disclosed. A set of processing parameters is also disclosed which is suitable to process the fiber reinforced polymer composition to manufacture a void-free composite article at a rapid rate and having a similar performance as if it was cured in an autoclave. The composite manufacturing technology utilizes rapid heating/cooling rates and material technologies enabling not only absorption of rapid heat transfers and a suitable balance between cure kinetics and flow characteristics, but also excellent thermal and mechanical performances of the composite article, equivalent or exceeding the properties of an autoclave cured article. The process is applicable to fiber reinforced polymer parts currently made from an autoclave, but which demand faster production rates.
Abstract:
Embodiments herein relate to a prepreg comprising a thermosetting resin, and reinforcing fibers in the thermosetting resin, wherein when the prepreg is cured in vacuum bag only conditions, and a method of making the same. The method also applies for autoclave processing. Embodiments also relate to a cured fiber reinforced composite material made by thermally curing the prepreg.
Abstract:
An epoxy resin composition having components (A), (B), (C), and (D), wherein the epoxy resin composition has a viscosity at 40°C of about 1 x 103 to about 1 x 104 Pa·s, a curing start temperature of about 90 to about 110°C, and a minimum viscosity at the curing start temperature of about 2 to about 20 Pa·s, wherein the components (A), (B), (C), and (D) are as follows: (A) About 60 weight parts or more of a tetraglycidyl amine type epoxy resin per 100 weight parts of the epoxy resin blend; (B) Dicyandiamide;(C) Diaminodiphenyl sulfone and (D) Urea compound.
Abstract:
Embodiments herein relate to a prepreg comprising a thermosetting resin, and reinforcing fibers in the thermosetting resin, wherein when the prepreg is cured in vacuum bag only conditions, and a method of making the same. The method also applies for autoclave processing. Embodiments also relate to a cured fiber reinforced composite material made by thermally curing the prepreg.
Abstract:
An embodiment relates to a prepreg having a structure comprising a first layer and a second layer, wherein the prepreg comprises component (A) comprising a reinforcing fiber, component (B) comprising a thermosetting resin, and component (C) comprising a particle or a fiber of a thermoplastic resin, the component (C) is substantially locally distributed in the first layer and the prepreg is a partially impregnated prepreg.