Fluoropolymer powder adapted for rapid prototyping by laser sintering
AssigneeArkema France
InventorsStephane Bizet, Julien Le Boterff
Life of this patent
Estimating the term…
Abstract
The invention relates to a composition based on a thermoplastic fluoropolymer powder, in particular on polyvinylidene fluoride (PVDF) with improved flowability, particularly suitable for manufacturing parts by 3D laser sintering. The invention also relates to a method for agglomerating powder layer by layer, by melting or sintering using said composition. The invention finally relates to a three-dimensional article obtained by implementing said method.
Claims15
A composition comprising a thermoplastic fluoropolymer powder and a hydrophobic flow agent, in which the fluoropolymer powder has a particle size defined by a Dv50 of between 25 and less than or equal to 120 um, a Dv90 of less than or equal to 200 μm and a Dv10 of less than or equal to 25 μm, wherein said hydrophobic flow agent is selected from the group consisting of:
- precipitated silicas, fumed silicas, vitreous silicas, and pyrogenic silicas.
Dependencies are inferred from the claim text.