초록 ▼

The present invention provides a needled mat adapted to reinforce a thermosetting matrix material to form a composite, composites formed therefrom, and methods related thereto. The needled mat includes a primary layer of a plurality of unidirectional continuous glass fiber strands coated with a comp

The present invention provides a needled mat adapted to reinforce a thermosetting matrix material to form a composite, composites formed therefrom, and methods related thereto. The needled mat includes a primary layer of a plurality of unidirectional continuous glass fiber strands coated with a composition which is compatible with the thermosetting matrix material and a secondary layer positioned thereon of a plurality of randomly oriented, generally continuous and/or chopped glass fiber strands coated with a composition which is compatible with the thermosetting matrix material. The mat has a total surface weight ranging from about 1300 to about 11,500 grams per square meter.

대표청구항 ▼

[ Therefore, we claim:] [1.] A mat adapted to reinforce a thermosetting matrix material, the mat comprising:(a) a primary layer comprising a plurality of generally parallel, essentially continuous glass fiber strands oriented generally parallel to a longitudinal axis of the mat, at least a portion o

[ Therefore, we claim:] [1.] A mat adapted to reinforce a thermosetting matrix material, the mat comprising:(a) a primary layer comprising a plurality of generally parallel, essentially continuous glass fiber strands oriented generally parallel to a longitudinal axis of the mat, at least a portion of outer surfaces of the plurality of the glass fiber strands having thereon a layer comprising a first coating composition which is compatible with a thermosetting matrix material, the first coating composition comprising a polymeric film-forming material which is selected from the group consisting of thermosetting materials, vinyl acetate materials and thermoplastic polyester materials, the primary layer of the mat having a surface weight ranging from about 585 to about 10,350 grams per square meter and comprising about 45 to about 90 weight percent of the mat on a total solids basis; and(b) a secondary layer positioned adjacent to a surface of the primary layer, the secondary layer comprising a plurality of randomly oriented, generally continuous glass fiber strands, at least a portion of outer surfaces of the plurality of the glass fiber strands of the secondary layer having thereon a layer comprising a second coating composition which is compatible with the thermosetting matrix material, the second coating composition comprising a polymeric film-forming material which is selected from the group consisting of thermosetting materials, vinyl acetate materials and thermoplastic polyester materials, wherein the strands of the primary layer are entangled with the strands of the secondary layer by needling together at least a portion of the strands of the primary layer and the strands of the secondary layer to form a mat, the secondary layer of the mat having a surface weight ranging from about 715 to about 1,150 grams per square meter.