公开(公告)号：WO2022217032A1

公开(公告)日：2022-10-13

申请号：PCT/US2022/023982

申请日：2022-04-08

Applicant: ZOLTEK COMPANIES, INC.

Inventor： GELI, Maurice ,  CORBIN, David, Michael

IPC: C08J5/04 ,  C08J5/06 ,  C08L77/06 ,  D06M13/402 ,  D06M15/59

Abstract: A method of making a sized and resin-coated fiber tow for use in a fiber reinforced composite, the method comprising the steps of providing a fiber, contacting at least a portion of the fiber with a sizing slurry to form a sized and resin-coated fiber, the sizing slurry comprising 0.1-25% by weight of a sizing agent and 20-80% by weight of a matrix-resin powder in a solvent, based on the total weight of the sizing slurry, wherein the total solid content, including the sizing agent and the matrix-resin powder, of the sizing slurry is greater than 30 wt.%. The method further comprising drying the sized and resin-coated fiber at a temperature below the melting point of the matrix-resin powder, thereby forming a dried sized and resin-coated fiber and winding the dried sized and resin-coated fiber onto a spool.