US 11,840,613 B2
Z-pin for increasing delamination resistance
Eduardo Santana De Vega, Bristol (GB); Giuliano Allegri, Bristol (GB); Stephen Hallett, Bristol (GB); Ian Hamerton, Bristol (GB); and Bing Zhang, Bristol (GB)
Assigned to Rolls-Royce PLC, London (GB)
Filed by ROLLS-ROYCE plc, London (GB)
Filed on Nov. 28, 2022, as Appl. No. 18/058,912.
Claims priority of application No. 2118257 (GB), filed on Dec. 16, 2021.
Prior Publication US 2023/0192979 A1, Jun. 22, 2023
Int. Cl. B32B 3/06 (2006.01); C08J 5/24 (2006.01); B29C 70/82 (2006.01)
CPC C08J 5/246 (2021.05) [B29C 70/82 (2013.01); B32B 3/06 (2013.01); C08J 2363/00 (2013.01); C08J 2367/00 (2013.01); C08J 2375/00 (2013.01); C08J 2379/08 (2013.01); C08J 2479/06 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A Z-pin for increasing a delamination resistance of continuous fibre-reinforced polymer composites, the Z-pin being formed of a composite material including:
a polymer matrix; and
a plurality of fibres embedded in a polymer matrix and aligned along the length direction of Z-pin, the fibres having an elongation at break of at least 2% and a tensile strength of at least 5 GPa;
wherein the polymer matrix has an elongation at break equal to or greater than the elongation at break of the fibres, and a tensile strength of at least 120 MPa.