Patent ID: 11969913
Assignee: TECHNOLOGIES AVANCEES ET MEMBRANES INDUSTRIELLES
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B

Claim 0:
1. A method for manufacturing a monolithic inorganic porous support having a porosity comprised between 10% and 60% and an average pore diameter ranging from 0.5 μm to 50 μm, using a 3D printing machine including an extrusion head movably mounted in space relative to and above a fixed horizontal plate, said 3D printing machine allowing the deposition of a string of inorganic composition to build, from a 3D digital model, a manipulable three-dimensional green structure intended to form the monolithic inorganic porous support, the method consisting of:
having the inorganic composition, said inorganic composition, including a first powdery solid inorganic phase in the form of particles with an average diameter comprised between 0.1 μm and 150 μm, and a second phase in the form of a matrix comprising a hot-melt polymer,
supplying the extrusion head of the 3D printing machine with the inorganic composition, said extrusion head being at a temperature allowing the extrusion of the inorganic composition to form the string,
building, using said string on said horizontal plate, the manipulable three-dimensional green structure in accordance with the 3D digital model,
placing this manipulable three-dimensional green structure in a heat treatment furnace in order to carry out a sintering operation at a temperature comprised between 0.5 and 1 times the melting temperature of a material forming the powdery solid inorganic phase.