	US 11,866,559 B2
	Fast fabrication of fiber reinforced polymers using solid epoxy powder containing an initiator
Junhua Wei, Palo Alto, CA (US); Gabriel Iftime, Newark, CA (US); Michael Benedict, Palo Alto, CA (US); and Mahati Chintapalli, Moutain View, CA (US)
Assigned to XEROX CORPORATION, Norwalk, CT (US)
Filed by PALO ALTO RESEARCH CENTER INCORPORATED, Palo Alto, CA (US)
Filed on Jan. 12, 2021, as Appl. No. 17/147,217.
Prior Publication US 2022/0220267 A1, Jul. 14, 2022
Int. Cl. C08K 3/36 (2006.01); C08J 5/24 (2006.01); C08K 3/34 (2006.01); C08K 3/04 (2006.01); C08L 101/00 (2006.01)

CPC C08J 5/243 (2021.05) [C08K 3/042 (2017.05); C08K 3/346 (2013.01); C08K 3/36 (2013.01); C08L 101/00 (2013.01); C08J 2363/00 (2013.01)]

15 Claims

1. A method of manufacturing fiber reinforced polymers comprising:

producing a powder resin comprising a polymer precursor and a thermal initiator, wherein the powder resin is produced by mixing an epoxy monomer as the polymer precursor in a concentration range of 80-99.99 wt % and thermal initiator in a concentration range of 0.001-20 wt %;

packing a fiber structure with the powder resin resulting in a resin-packed structure by one or more of repeatedly spraying the powder resin onto a layer of the fiber structure and adding layers, densifying the powder resin, electrodepositing the powder resin, and rolling the powder resin over the fiber structure; and

heating the resin-packed structure to a curing temperature high enough to melt and cure the resin-packed structure to form a final structure.