Patent ID: 11939438
Assignee: ARKEMA FRANCE
Field: Other special machines (Mechanical engineering)
Classification: CPC B  C | IPC B  C

Claim 0:
1. A process for preparing a semifinished product comprising a PAEK-based resin and reinforcing fibers, comprising the steps of:
a. preparing a dispersion comprising a PAEK-based resin in pulverulent form dispersed in an aqueous phase comprising 1%-40% by weight at least one volatile organic compound and a surfactant;
b. bringing the reinforcing fibers into contact with said aqueous dispersion;
c. drying the fibers impregnated with dispersion; and
d. heating the impregnated fibers to a temperature sufficient for the melting of the resin, so as to form a semifinished product,
wherein the dispersion has a dynamic viscosity, measured at 25° C. under a shear stress of 6.8 s−1 on a Brookfield DV2T Extra viscometer, is between 0.1 and 25 Pa·s; and, wherein the surfactant is present, and its content is less than 1% by weight relative to the mass of dispersed resin.