EP 4366950 A1 20240515 - PROCESS FOR PRODUCING MOULDED ARTICLES FROM CARBON OR GRAPHITE BY 3D PRINTING
Title (en)
PROCESS FOR PRODUCING MOULDED ARTICLES FROM CARBON OR GRAPHITE BY 3D PRINTING
Title (de)
VERFAHREN ZUM HERSTELLEN VON FORMTEILEN AUS CARBON ODER GRAPHIT MITTELS 3D-DRUCK
Title (fr)
PROCÉDÉ DE FABRICATION DE PIÈCES MOULÉES EN CARBONE OU GRAPHITE PAR IMPRESSION 3D
Publication
Application
Priority
- DE 102021117691 A 20210708
- EP 2022068535 W 20220705
Abstract (en)
[origin: WO2023280821A1] The invention relates to a process for simple production of moulded articles from carbon or graphite by 3D printing. This is achieved by producing a free-flowing polymer mixture from a UV-transparent and polymerizable polymer or cellulose and a UV-crosslinkable resin, and wherein sugar and/or cellulose is mixed into the polymeric mixture until the mixture has such a consistency that it can be introduced into and processed by a 3D printer, and homogenizing the mixture at room temperature, or elevated temperature up to about 60°C, filling a 3D printer with the mixture, and layer-by-layer printing of a moulded article with the 3D printer under the simultaneous action of UV radiation for layer-by-layer crosslinking of the UV-crosslinkable resin, cleaning the moulded article, introducing the UV-precured moulded article into an oven and stabilizing the UV-precured moulded article in air at a defined stabilization temperature until all the volatile constituents have outgassed from the prefabricated moulded article, followed by high-temperature treatment of the moulded article for carbonization or graphitization in an oven under protective gas.
IPC 8 full level
B33Y 10/00 (2015.01); B29C 64/124 (2017.01); B33Y 70/00 (2020.01); B33Y 70/10 (2020.01); C04B 35/52 (2006.01); C04B 35/524 (2006.01); C04B 35/573 (2006.01); C04B 35/626 (2006.01); C04B 35/634 (2006.01); C04B 35/636 (2006.01)
CPC (source: EP US)
B29C 64/124 (2017.08 - US); B33Y 10/00 (2014.12 - EP US); B33Y 40/20 (2020.01 - US); B33Y 70/00 (2014.12 - EP); B33Y 70/10 (2020.01 - EP US); C04B 35/522 (2013.01 - EP); C04B 35/524 (2013.01 - EP US); C04B 35/573 (2013.01 - EP); C04B 35/6267 (2013.01 - EP); C04B 35/6269 (2013.01 - EP US); C04B 35/63444 (2013.01 - EP); C04B 35/636 (2013.01 - EP); C04B 35/6365 (2013.01 - EP US); C04B 35/64 (2013.01 - US); B29C 64/124 (2017.08 - EP); B29C 64/35 (2017.08 - US); B29K 2033/20 (2013.01 - US); C04B 2235/3418 (2013.01 - EP); C04B 2235/3826 (2013.01 - US); C04B 2235/40 (2013.01 - EP); C04B 2235/425 (2013.01 - US); C04B 2235/48 (2013.01 - EP US); C04B 2235/6026 (2013.01 - EP US); C04B 2235/6562 (2013.01 - EP US); C04B 2235/6567 (2013.01 - EP US); C04B 2235/658 (2013.01 - US); C04B 2235/6581 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DE 102021117691 A1 20230112; CN 117730003 A 20240319; EP 4366950 A1 20240515; JP 2024523432 A 20240628; US 2024286961 A1 20240829; WO 2023280821 A1 20230112
DOCDB simple family (application)
DE 102021117691 A 20210708; CN 202280048303 A 20220705; EP 2022068535 W 20220705; EP 22744438 A 20220705; JP 2023578146 A 20220705; US 202218572664 A 20220705