Fiber preform made from reinforcing fiber bundles and comprising unidirectional fiber tapes, and composite component

摘要

A fiber preform for producing fiber composite structures, a wall thereof including a first zone made from reinforcing fiber bundles having a first resin composition and a second zone made from at least one fiber tape comprising at least one unidirectionally directed reinforcing yarn strand having a second resin composition. The reinforcing fiber bundles in the first zone are oriented in different spatial directions to each other when viewed in a direction parallel to the extension of the thickness. Each reinforcing fiber has a length of from 3 to 50 mm, and contains the first resin composition in a concentration of from 1 to 10 wt % of the fiber weight. The wall of the fiber preform has a proportion of reinforcing fibers of more than 35 vol %, and the second zone forms a discrete region when viewed in a direction perpendicular to the thickness extension of the wall.

主权项

1. A fiber preform for producing fiber composite structures, the fiber preform comprising:
a wall made from reinforcing fibers, wherein: the wall has a first surface, a second surface lying opposite the first surface and a thickness extending between the surfaces, and is limited by edges, the wall comprises at least one first zone made from reinforcing fiber bundles having a first resin composition and at least one second zone made from at least one fiber tape comprising at least one unidirectionally directed reinforcing yarn strand having a second resin composition, the reinforcing fiber bundles in the at least one first zone are oriented in differing spatial directions from each other when viewed in a direction parallel to the thickness extension, each reinforcing fiber bundle comprises reinforcing fiber filaments directed parallel to each other, has a length in a range from 3 to 50 mm, and contains the first resin composition in a concentration in a range from 1 to 10 wt. % relative to a fiber weight, the wall of the fiber preform has a proportion of reinforcing fibers of greater than 35 vol. %, and the at least one second zone forms a discrete region when viewed in a direction perpendicular to the thickness extension of the wall and at least one fiber tape ends with at least one end thereof inside of the wall.