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US 2016/0096197 A1Published application
Process for the manufacture of impregnated cloths for composite articles
AssigneeRhodia Operations
InventorAudrey DI MARTINO
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Abstract
The present invention relates to the use of polyamide of high melt flow in the form of particles having a specific median diameter D50 in the manufacture of impregnated cloths used in the manufacture of composite materials. The field of the invention is that of composite materials and their processes of manufacture.
Claims16
A method for forming polyamide particles, said method comprising:
- water pelletizing a polyamide composition that exhibits a melt viscosity of between 0.5 and 50 Pa·s, as measured on the Newtonian plateau at a shear rate of 100 s−1 in a capillary rheometer at a temperature of 25° C. above the melting point of the polyamide composition, and
- drying the particles from the water pelletizing step solely by mechanical treatments, thereby forming polyamide particles exhibiting a median diameter D50 of between 0.3 and 2 mm.
Dependencies are inferred from the claim text.