Heat Conducting Composite Printed By Fdm and Strategies for Effective Heat Sinking

Content Provider	The Lens
Description	L'invention concerne un procédé d'impression 3D d'un dissipateur thermique (100) au moyen d'une modélisation par dépôt par fusion, le procédé comprenant le dépôt par couches d'un matériau imprimable en 3D pour fournir une pluralité de couches (322) d'un matériau imprimé 3D (202), moyennant quoi une face de réception de chaleur (101) du dissipateur thermique (100) est créée, la pluralité de couches (322) de matériau imprimé 3D (202) étant configurée parallèlement à des plans (325) perpendiculaires à la face de réception de chaleur (101), le matériau imprimable 3D comprenant des particules incorporées dans le matériau imprimable 3D, les particules ayant une conductivité thermique anisotrope, les particules étant disponibles dans le matériau imprimable 3D en une quantité sélectionnée dans la plage de 5 % à 40 % en volume par rapport au volume total du matériau imprimable 3D et les couches (322) de matériau imprimé 3D (202) ayant des hauteurs de couche (H) choisies dans la plage jusqu'à un maximum de 800 µm.
Abstract	The invention provides a method for 3D printing a heat sink (100) by means of fused deposition modelling, the method comprising layer-wise depositing a 3D printable material to provide a plurality of layers (322) of a 3D printed material (202) whereby a heat receiving face (101) of the heat sink (100) is created, the plurality of layers (322) of 3D printed material (202) being configured parallel to planes (325) perpendicular to the heat receiving face (101), wherein the 3D printable material comprises particles embedded in the 3D printable material, wherein the particles have an anisotropic thermal conductivity, wherein the particles are available in the 3D printable material in an amount selected from the range of 5-40 vol.% relative to the total volume of the 3D printable material, and wherein the layers (322) of 3D printed material (202) have layer heights (H) selected from the range of at maximum 800 µm.
Related Links	https://www.lens.org/lens/patent/010-914-856-979-433/frontpage
Language	English
Publisher Date	2019-11-28
Access Restriction	Open
Alternative Title	Composite Thermoconducteur Imprimé Par Fdm Et Stratégies De Dissipation De Chaleur Efficace
Content Type	Text
Resource Type	Patent
Date Applied	2019-05-15
Agent	Van Eeuwijk, Alexander, Henricus, Walterus Et Al.
Applicant	Signify Holding Bv
Application No.	2019062481
Claim	CLAIMS: A method for 3D printing a heat sink (100) by means of fused deposition modelling, the method comprising layer- wise depositing a 3D printable material (201) to provide a plurality of layers (322) of a 3D printed material (202) whereby a heat receiving face (101) of the heat sink (100) is created, the plurality of layers (322) of 3D printed material (202) being configured parallel to planes (325) perpendicular to the heat receiving face (101), wherein the 3D printable material (201) comprises particles (410) embedded in the 3D printable material (201), wherein the particles (410) have an anisotropic thermal conductivity, wherein the particles (410) are available in the 3D printable material (201) in an amount selected from the range of 5-40 vo% relative to the total volume of the 3D printable material (201), and wherein the layers (322) of 3D printed material (202) have layer heights (H) selected from the range of at maximum 800 pm. The method according to claim 1, wherein the particles (410) comprise non- spherical particles having a longest dimension (Ll) selected from the range of 10-200 pm, wherein the particles (410) comprise one or more of flake-shaped particles and needle-shape particles, and wherein the particles (410) are available in the 3D printable material (201) in an amount selected from the range of 10-40 vo% relative to the total volume of the 3D printable material (201). 3. The method according to any one of the preceding claims, comprising controlling the layer height (H) and a layer width (W) by one or more of a speed of movement a of a printer head (501), a rate of 3D printable material (201) extrusion through a nozzle (502) of the printer head (501), and a distance between the nozzle (502) and a receiver item (550) on which the 3D printable material (201) is printed, wherein the layer width (W) is maintained at at least 1 mm, and wherein the method comprises printing the 3D printable material (201) such that a ratio AR3 of the longest dimension (Ll) of the particles (410) and the layer height (H) of the layers (322) AR3=Ll/H is selected from the range of 0lThe method according to any one of the preceding claims, comprising using a fused deposition modeling 3D printer (500) for layer-wise depositing the 3D printable material (201), wherein the fused deposition modeling 3D printer (500) comprises a printer head (501) with a nozzle (502), wherein the nozzle (502) has an equivalent circular diameter of at least 1 mm. The method according to any one of the preceding claims, wherein the particles (410) comprise one or more of graphite and boron nitride, and wherein the 3D printable material (201) comprises one or more of polycarbonate, polyethylene, polypropylene, and polyester based thermoplastic elastomer. The method according to any one of the preceding claims, wherein the 3D printable material (201) comprises a thermoplastic material having a weight averaged molecular weight of at maximum 1 * 10 5 Dalton, wherein at least 40 vo% of the 3D printable material (201) consists of the thermoplastic materia The method according to any one of the preceding claims, wherein the 3D printable (201) comprises at maximum 30 vo% of a further additive, wherein the further additive is selected from the group of a polymeric additive and an inorganic additive, other than the particles (410) having an anisotropic thermal conductivity. A 3heat sink (100) comprising 3D printed material (202), wherein the heat sink (100) comprises a plurality of layers (322) of 3D printed material (202) defining a heat receiving face (101), wherein the plurality of layers (322) of 3D printed material (202) are configured parallel to planes (325) perpendicular to the heat receiving face (101), wherein the 3D printed material (202) further comprises particles (410) embedded in the 3D printed material (202), wherein the particles (410) have an anisotropic thermal conductivity, wherein the particles (410) are available in the 3D printed material (202) in an amount selected from the range of 5-40 vo% relative to the total volume of the 3D printed material (202), and wherein the layers (322) of 3D printed material (202) have layer heights (H) selected from the range of at maximum 800 pm. The heat sink (100) according to claim 8, wherein the heat sink (100) comprises a plurality of fins (110) for dissipating heat. The heat sink (100) according to any one of the preceding claims 8-9, wherein the particles (410) comprise non- spherical graphite particles having a longest dimension (Ll) selected from the range of 10-200 pm, wherein the particles (410) are available in the 3D printed material (202) in an amount selected from the range of 10-40 vo% relative to the total volume of the 3D printed material (202), wherein the particles (410) comprise one or more of flake-shaped particles and needle-shape particles, wherein the particles (410) comprise one or more of graphite and boron nitride, and wherein the 3D printed material (202) comprises one or more of polycarbonate, polyethylene, polypropylene, and polyester based thermoplastic elastomer. The heat sink (100) according to any one of the preceding claims 8-10, wherein the 3D printed material (202) comprises a thermoplastic material having a weight averaged molecular weight of at maximum 1 * 10 5 Dalton, wherein at least 40 vo% of the 3D printed material (202) consists of the thermoplastic material, wherein the 3D printed material (202) comprises at maximum 30 vo% of a further additive, wherein the further additive is selected from the group of a polymeric additive and an inorganic additive, other than the particles (410) having an anisotropic thermal conductivity. A system (1000) comprising (i) a functional component (1010) generating heat during use, and (ii) the heat sink (100) according to any one of the preceding claims 8-11, wherein the heat receiving face (101) of the heat sink (100) is in thermal contact with the functional component. 3 The system (1000) according to claim 12, wherein the system (1000) comprises a lighting system comprising a light source (10), wherein the functional component (1010) comprises the light source (10). A computer program product, when running on a computer which is functionally coupled to or comprised by a fused deposition modeling 3D printer (500), is capable of bringing about the method according to any one of the preceding claims 1-7.
CPC Classification	SHAPING OR JOINING OF PLASTICS;SHAPING OF MATERIAL IN A PLASTIC STATE; NOT OTHERWISE PROVIDED FOR;AFTER-TREATMENT OF THE SHAPED PRODUCTS; e.g. REPAIRING ADDITIVE MANUFACTURING; i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION; ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING; e.g. BY 3-D PRINTING; STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING Functional Features Or Details Of Lighting Devices Or Systems Thereof;Structural Combinations Of Lighting Devices With Other Articles; Not Otherwise Provided For INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B; B29C OR B29D; RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR
Extended Family	000-893-443-340-559 071-362-456-084-454 004-239-438-506-832 165-315-468-836-39X 010-914-856-979-433
Patent ID	2019224071
Inventor/Author	Hikmet Rifat Zuidema Patrick Van Hal Paulus
IPC	B29C70/58 B29C64/118 B33Y10/00 B33Y80/00 F21V29/70
Status	Pending
Simple Family	071-362-456-084-454 000-893-443-340-559 004-239-438-506-832 165-315-468-836-39X 010-914-856-979-433
CPC (with Group)	B29C64/118 B29C70/58 B33Y10/00 B33Y80/00 F21V29/74 F21V29/87 F21V29/77 B29C64/209 B29K2023/06 B29K2023/12 B29K2069/00 B29K2507/02 B29K2507/04 B29K2995/0005 B29K2995/0044 B33Y70/00
Issuing Authority	United States Patent and Trademark Office (USPTO)
Kind	Patent Application Publication