Novel reinforcing materials, methods, and uses based on S- and Z-twisted yarns, suitable for forming composite components.

A unidirectional web of twisted carbon yarns with balanced S-twist and Z-twist configurations, combined with porous polymer layers, addresses the brittleness and conductivity issues in composite materials, ensuring efficient production and improved performance in aerospace components.

JP7864133B2Active Publication Date: 2026-05-22HEXCEL REINFORCEMENTS SAS
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
HEXCEL REINFORCEMENTS SAS
Filing Date
2022-03-07
Publication Date
2026-05-22

AI Technical Summary

Technical Problem

Existing composite materials used in aerospace and other industries face challenges with high brittleness after polymerization, reduced impact resistance, and inadequate lateral electrical conductivity, particularly in unidirectional carbon fiber webs, which are difficult to produce efficiently and with high areal weight.

Method used

A reinforcing material comprising a unidirectional web of twisted carbon yarns with balanced S-twist and Z-twist configurations, combined with porous polymer layers, enhances lateral cohesion and electrical conductivity while maintaining high permeability and weight, using a method that avoids micropunching and complex layup operations.

Benefits of technology

The solution provides improved layup performance, reduced overrun, and enhanced lateral electrical conductivity in composite parts, allowing for high basis weights without compromising production speed or quality, suitable for aerospace applications.

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Abstract

The reinforcing material comprises a unidirectional reinforcing web (2) formed from one or more carbon threads (3) associated with a porous polymer layer (4, 5) on at least one of its faces, preferably on each of its faces, the polymer portion of the reinforcing material making up 0.5% to 10% of its total weight, preferably 2% to 6% of its total weight, said carbon threads (3) being individually twisted with a twist of 3 turns / m to 15 turns / m, preferably 6 turns / m to 12 turns / m, characterised in that it comprises at least one S-twisted thread and at least one Z-twisted thread from the selection according to claim 1.
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