FIBER STRUCTURE, METHOD FOR ITS MANUFACTURE AND USE AS WELL AS FIBER-RESIN COMPOSITE MATERIAL

摘要

The invention relates to a fixed and/or stabilized fiber structure from a fibrous material as well as from an agent for its fixing and stabilizing. The agent for fixing and stabilizing is a statistical copolyester which is formed from the diacid components terepththalic acid and, optionally, isophthalic acid as well as the diol components butanediol, diethylene glycol and triethylene glycol. A method of manufacturing this fiber structure is also provided. The fiber structure is used as a reinforcement material for polymer matrices, in particular epoxy resins. A fiber composite material containing at least one thermosetting resin as well as the fiber structure in accordance with the invention is furthermore provided.

主权项

1. A fiber-resin composite material comprising at least one thermosetting resin as well as at least one fixed and/or stabilized fiber structure containing a fibrous material selected from the group consisting of glass fibers, carbon fibers, mineral fibers, synthetic fibers, and mixtures hereof:
and an agent for its fixing and stabilizing, wherein the agent for fixing and stabilizing is at least one statistical copolyester comprising: from 55 to 100 mol % terephthalic acid; from 0 to 45 mol % isophthalic acid; from 35 to 75 mol % butanediol: from 15 to 35 mol % diethylene glycol; from 10 to 30 mol % triethylene glycol,
wherein the sum of the molar fractions of terephthalic acid and butanediol is a maximum of 150 mol % with respect to the total diacid and total diol quantities of 100 mol % each, wherein at least one copolyester has a melting viscosity, measured according to ISO/DIN 1133, at 160° C. and a load of 2.16 kg, in the range of 100 to 3000 Pas, and wherein the fibrous material is a unidirectional filament or an areal fibrous material selected from the group consisting of fabrics, fleeces, knitted meshes, knitted fabrics, nonwovens, and combinations thereof.