EP1456287A2 - Heat-conducting thermoplastic compounds and uses thereof - Google Patents
Heat-conducting thermoplastic compounds and uses thereofInfo
- Publication number
- EP1456287A2 EP1456287A2 EP02798270A EP02798270A EP1456287A2 EP 1456287 A2 EP1456287 A2 EP 1456287A2 EP 02798270 A EP02798270 A EP 02798270A EP 02798270 A EP02798270 A EP 02798270A EP 1456287 A2 EP1456287 A2 EP 1456287A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- flexible
- thermoplastically processable
- compounds according
- filler
- hose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/06—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material
- F28F21/062—Constructions of heat-exchange apparatus characterised by the selection of particular materials of plastics material the heat-exchange apparatus employing tubular conduits
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/01—Use of inorganic substances as compounding ingredients characterized by their specific function
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/08—Metals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F13/00—Arrangements for modifying heat-transfer, e.g. increasing, decreasing
- F28F2013/005—Thermal joints
- F28F2013/006—Heat conductive materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/13—Hollow or container type article [e.g., tube, vase, etc.]
- Y10T428/1352—Polymer or resin containing [i.e., natural or synthetic]
- Y10T428/139—Open-ended, self-supporting conduit, cylinder, or tube-type article
Definitions
- the invention relates to flexible compounds comprising a thermoplastic elastomer, and to flexible heat-conductive hoses produced therefrom, which can be used in particular as a heating or cooling hose.
- a very effective way of transferring heat and dissipating it especially from large-volume devices such as electrical windings is to install metal pipes (for example made of copper) with good thermal conductivity and to pump them through this cooling liquid, for example cold water.
- metal pipes for example made of copper
- this cooling liquid for example cold water.
- Another disadvantage is that several parallel pipes have to be connected at the ends in a complex manner and that design-related bends cannot be made without changes in cross-section which inhibit the flow or make the inlet pressure necessary.
- the use of flexible, commercially available plastic hoses enables more rational production (winding around the parts to be cooled; prefabrication of wound heat exchangers).
- the disadvantage here is that the plastic and thus the hose wall has a very low thermal conductivity of approx. 0.15-0.20 W / mK and thus the effectiveness of the cooling is significantly reduced. This is exacerbated if, due to the required pressure resistance, hoses with a relatively large wall thickness of, for example, 1-2 mm have to be used. If, due to the design, tight bending radii are required, a thick-walled hose must also be used for this reason, since it is known that the tendency to kink increases with smaller wall thicknesses.
- the device / the winding can be cast with a casting resin, preferably with increased thermal conductivity.
- the object of the invention is therefore to provide thermoplastically processable compounds which, in spite of a high degree of filling in processing as a hose, combine a narrow bending radius with high burst pressure and high elongation at break.
- the invention relates to flexible thermoplastically processable compounds with a thermal conductivity greater than 0.5 W / mK, comprising a thermoplastic processable molding compound and a filler.
- the compound has a tensile strength of greater than 15 MPa and / or a modulus of elasticity between 100 and 1000 MPa.
- the compound has a filler content of between 15 and 50% by volume, preferably a content of 20 to 40% by volume.
- the compound comprises a thermoplastically processable molding compound and a thermally conductive filler.
- thermoplastically processable molding compounds can be used which have a high elongation at break (greater than 200%) and a low modulus of elasticity (100 to 500 MPa).
- the elongation at break is considerably reduced by the high proportion of filler, the modulus of elasticity is increased and the end product is thus stiffer than the starting product.
- the tensile and bending strength must be high enough to meet the necessary bending radii and pressure tests when filled.
- the tensile stress of the raw material should be> 20 MPa.
- thermoplastic elastomers plastics which have the properties of elastomers and can be processed like thermoplastics
- copolymers are therefore particularly suitable for this purpose.
- the molding compound is a thermoplastic elastomer from the group: TPE-U (thermoplastic elastomer based on polyurethane), TPE-A (thermoplastic elastomer based on polyamide), TPE-E (thermoplastic elastomer based on polyester) -Base), TPE-0 (polyolefin-based themoplastic elastomers), styrene block copolymers (SEBS block polymer, SBS block polymer), EPDM / PE blends, EPDM / PP blends, EVA, PEBA (polyether block amides ).
- TPE-U thermoplastic elastomer based on polyurethane
- TPE-A thermoplastic elastomer based on polyamide
- TPE-E thermoplastic elastomer based on polyester
- TPE-0 polyolefin-based themoplastic elastomers
- SEBS block polymer SBS block polymer
- the filler is selected from the group of the following fillers: quartz, aluminum oxide, magnesium oxide, aluminum nitride, silicon carbide, silicon nitride,
- Boron nitride, zinc sulfide and mixtures thereof It is also possible to partially or completely fill the aforementioned fillers to be replaced by highly thermally conductive powdered metals such as aluminum, copper, silver.
- Quartz, aluminum oxide and boron nitride are preferred.
- both splintery, spherical, fibrous and platelet-shaped particles can be used.
- the particle size depends on the respective application. When using the mixtures according to the invention as hose materials, it is advantageous to remain clearly below the wall thickness to be realized with the maximum particle size; the maximum particle size is preferably less than half the wall thickness.
- the average particle size is less than 200 ⁇ m, preferably less than 100 ⁇ m, particularly preferably less than 50 ⁇ m. It is also advantageous to use a bi- or trimodal particle size distribution
- additives In principle, the use of additives, plasticizers, adhesion promoters, color pigments, processing aids for the targeted modification of processing and final properties is possible and permitted. Due to the migration problem, the additives, especially the plasticizers, should only be added in a very selected manner.
- the compounds are usually produced continuously on a twin-screw extruder.
- the processing parameters must be matched to the respective plastic and filler and the screw geometry adjusted.
- production is also possible discontinuously in a kneader or on a calender (e.g. shear roller calender).
- a calender e.g. shear roller calender
- the final compound must have a sufficiently fine filler distribution and homogeneity for further processing.
- the hose is manufactured on a conventional hose extrusion line. Depending on the material, the compound is melted and homogenized in a single- or twin-screw extruder. In the molten state, the compound is first continuously formed into a hose and discharged via the tool insert. Then calibrated, solidified, cooled and wound up.
- the inner diameter of the hoses is typically between 1 mm and 20 mm with a wall thickness of 0.05-5 mm; a wall thickness of 0.2-2 mm is preferred.
- the cross section of the hose can be round or oval, or can also consist of several chambers separated by webs.
- the hose according to the invention can be used both as a cooling hose and as a heating hose.
- the hose is particularly suitable for cooling electrical devices such as motors or transformers. Applications such as underfloor heating and / or other heat exchangers of all kinds are also conceivable.
- thermoplastic elastomer based on polyamide TPE-A was used as the thermoplastic material.
- compositions and properties are summarized in the table below.
- Example 1 is a comparative example without the addition of filler.
- Examples 2 and 3 show a significantly increased thermal conductivity compared to Example 1; In spite of a high filler content, the elongation at break in Examples 2 and 3 is sufficiently high to enable a bending radius of ⁇ 5 cm.
- the compounds according to the invention achieve a high thermal conductivity of 0.5-2 W / mK, which is thus a factor of 3-10 above that of the starting plastic.
- the hoses are characterized by high flexibility and strength. The elongation at break of> 20% makes it possible to process the hoses produced with a bending radius of ⁇ 5cm. Despite the high flexibility, the hoses produced have a burst pressure of> 20 bar.
- compositions according to the invention have an elongation at break of> 20% and that hoses can be used to produce them with a bending radius ⁇ 5 cm without tearing or kinking. It is also surprising that the hoses according to the invention have a burst pressure of> 20 bar.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10161882A DE10161882A1 (en) | 2001-12-17 | 2001-12-17 | Thermally conductive thermoplastic compounds and the use thereof |
DE10161882 | 2001-12-17 | ||
PCT/DE2002/004560 WO2003051971A2 (en) | 2001-12-17 | 2002-12-12 | Heat-conducting thermoplastic compounds and uses thereof |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1456287A2 true EP1456287A2 (en) | 2004-09-15 |
Family
ID=7709493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02798270A Withdrawn EP1456287A2 (en) | 2001-12-17 | 2002-12-12 | Heat-conducting thermoplastic compounds and uses thereof |
Country Status (5)
Country | Link |
---|---|
US (1) | US8062726B2 (en) |
EP (1) | EP1456287A2 (en) |
CN (1) | CN1302054C (en) |
DE (1) | DE10161882A1 (en) |
WO (1) | WO2003051971A2 (en) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10320464B4 (en) * | 2003-05-08 | 2008-04-30 | Forschungszentrum Karlsruhe Gmbh | Use of a molding compound for the production of sintered molded parts |
DE10359573A1 (en) * | 2003-12-18 | 2005-07-28 | Robert Bosch Gmbh | Heat transfer unit for a heat exchanger |
WO2007032033A1 (en) * | 2005-09-16 | 2007-03-22 | Dayco Fluid Technologies S.P.A. | Multi-layer piping for conveying and heating a fluid |
US8307637B2 (en) * | 2005-09-16 | 2012-11-13 | Dayco Fluid Technologies S.P.A. | Device for purifying exhaust gases of a vehicle by selective catalytic reduction including a heated piping |
DE102007037316A1 (en) | 2007-08-08 | 2009-02-12 | Lanxess Deutschland Gmbh | Thermally conductive and electrically insulating thermoplastic compounds |
US10036099B2 (en) | 2008-08-07 | 2018-07-31 | Slt Technologies, Inc. | Process for large-scale ammonothermal manufacturing of gallium nitride boules |
US9000466B1 (en) | 2010-08-23 | 2015-04-07 | Soraa, Inc. | Methods and devices for light extraction from a group III-nitride volumetric LED using surface and sidewall roughening |
CN102782036B (en) | 2009-12-29 | 2016-01-27 | 美国圣戈班性能塑料公司 | Flexible pipe and the method for the formation of this material |
US10147850B1 (en) | 2010-02-03 | 2018-12-04 | Soraa, Inc. | System and method for providing color light sources in proximity to predetermined wavelength conversion structures |
CN102311567B (en) * | 2010-07-08 | 2012-12-26 | 中国科学院化学研究所 | Heat conduction composite material and preparation method thereof |
EP2623562B1 (en) * | 2010-09-30 | 2018-01-31 | Ube Industries, Ltd. | Polyamide resin composition and molded article comprising same |
US10331160B2 (en) * | 2011-04-11 | 2019-06-25 | BSH Hausgeräte GmbH | Operator control element and domestic appliance |
CN102954291A (en) * | 2011-08-22 | 2013-03-06 | 爱康企业集团(上海)有限公司 | Heat-conduction type ground source heat pump tubing |
US9269876B2 (en) | 2012-03-06 | 2016-02-23 | Soraa, Inc. | Light emitting diodes with low refractive index material layers to reduce light guiding effects |
US20150316332A1 (en) * | 2012-03-30 | 2015-11-05 | Sekisui Chemical Co., Ltd. | Heat-conducting foam sheet for electronic instruments and heat-conducting laminate for electronic instruments |
US10145026B2 (en) | 2012-06-04 | 2018-12-04 | Slt Technologies, Inc. | Process for large-scale ammonothermal manufacturing of semipolar gallium nitride boules |
CN104349890B (en) | 2012-06-06 | 2018-01-12 | 美国圣戈班性能塑料公司 | Thermoplastic elastomer (TPE) tubing and its production and use |
US9978904B2 (en) | 2012-10-16 | 2018-05-22 | Soraa, Inc. | Indium gallium nitride light emitting devices |
CN102924828B (en) * | 2012-11-07 | 2015-01-07 | 安徽万朗磁塑集团有限公司 | Thermoplastic vulcanizate (TPV) magnetic door seal and manufacture method thereof |
US9761763B2 (en) | 2012-12-21 | 2017-09-12 | Soraa, Inc. | Dense-luminescent-materials-coated violet LEDs |
US9656437B2 (en) * | 2013-02-20 | 2017-05-23 | Guill Tool & Engineering Co., Inc. | Extrudable oriented polymer composites |
EP2787132A1 (en) * | 2013-04-01 | 2014-10-08 | Emerson Electric Co. | Hot water dispenser faucet with thermal barrier |
GB2515069B (en) * | 2013-06-13 | 2017-03-22 | Jer Innovations Ltd | Heat exchange apparatus |
BR112016006214B1 (en) | 2013-09-24 | 2022-09-13 | Adagio Medical, Inc | CRYOABLATION CATHETER |
PL2862894T3 (en) | 2013-10-15 | 2018-06-29 | Lanxess Deutschland Gmbh | Thermoplastic moulding materials |
US9419189B1 (en) | 2013-11-04 | 2016-08-16 | Soraa, Inc. | Small LED source with high brightness and high efficiency |
TWI614332B (en) * | 2016-09-22 | 2018-02-11 | 國立交通大學 | Polymeric composites having thermal conductivity and manufacturing method thereof |
CN106497012A (en) * | 2016-11-21 | 2017-03-15 | 国网河南省电力公司周口供电公司 | Transformer case material and preparation method thereof |
JP6746540B2 (en) * | 2017-07-24 | 2020-08-26 | 積水化学工業株式会社 | Heat conduction sheet |
AU2018328115B2 (en) | 2017-09-05 | 2024-06-13 | Adagio Medical, Inc. | Ablation catheter having a shape memory stylet |
CN107880243A (en) * | 2017-11-23 | 2018-04-06 | 广东元星工业新材料有限公司 | A kind of high heat-resistant high-performance polyurethane elastomer and preparation method thereof |
KR20200106924A (en) * | 2018-01-10 | 2020-09-15 | 아다지오 메디컬, 인크. | Ablation element with conductive liner |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0271094A (en) * | 1988-09-05 | 1990-03-09 | Bando Chem Ind Ltd | Heat exchange pipe made of resin |
US5249948A (en) * | 1991-04-08 | 1993-10-05 | Koslow Technologies Corporation | Apparatus for the continuous extrusion of solid articles |
US5545473A (en) * | 1994-02-14 | 1996-08-13 | W. L. Gore & Associates, Inc. | Thermally conductive interface |
JP2732822B2 (en) * | 1995-12-28 | 1998-03-30 | デュポン帝人アドバンスドペーパー株式会社 | Composite sheet and method for producing the same |
JP3543663B2 (en) * | 1999-03-11 | 2004-07-14 | 信越化学工業株式会社 | Thermal conductive silicone rubber composition and method for producing the same |
JP4678969B2 (en) * | 2000-03-23 | 2011-04-27 | 北川工業株式会社 | Thermal conductivity material |
CN100526907C (en) * | 2002-05-02 | 2009-08-12 | 西门子公司 | Gradient coil system for a magnetic resonance tomography device having a more effective cooling |
-
2001
- 2001-12-17 DE DE10161882A patent/DE10161882A1/en not_active Withdrawn
-
2002
- 2002-12-12 WO PCT/DE2002/004560 patent/WO2003051971A2/en active Application Filing
- 2002-12-12 CN CNB028251873A patent/CN1302054C/en not_active Expired - Lifetime
- 2002-12-12 US US10/499,043 patent/US8062726B2/en not_active Expired - Fee Related
- 2002-12-12 EP EP02798270A patent/EP1456287A2/en not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO03051971A2 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003051971A2 (en) | 2003-06-26 |
CN1604929A (en) | 2005-04-06 |
CN1302054C (en) | 2007-02-28 |
US8062726B2 (en) | 2011-11-22 |
WO2003051971A3 (en) | 2003-09-25 |
DE10161882A1 (en) | 2003-10-02 |
US20050049345A1 (en) | 2005-03-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1456287A2 (en) | Heat-conducting thermoplastic compounds and uses thereof | |
CN104558848B (en) | Halloysite nanotube-enhanced conducting polypropylene material and preparation method thereof | |
EP1771298B1 (en) | Coolant line | |
EP1801162B1 (en) | Polyamid-eva-blends | |
CN103951974A (en) | Anti-static heat-conducting nylon composite material and preparation method for same | |
DE69222670T2 (en) | Epoxy resin composition for encapsulating a semiconductor device | |
CN101891914A (en) | Composite type high-conductivity polymer material and preparation method thereof | |
CN103554633B (en) | A kind of High-voltage cable structure of excellent performance | |
EP1837884B1 (en) | Electrically conductive elastomer mixture, method for its manufacture, and use thereof | |
KR20000023728A (en) | Flat cable and method of manufacturing the same | |
DE102014217345B4 (en) | Long fiber reinforced thermoplastic resin composition improved in impact resistance and molded product using the same | |
CN108530898B (en) | Tear-resistant high-flexibility conductive rubber and preparation method thereof | |
DE212021000411U1 (en) | Reinforced polyphenylene sulfide composite material with high thermal conductivity | |
DE112019001430T5 (en) | Composition for wire coating material, insulated wire and wire harness | |
CN107418197B (en) | Heat-conducting nylon engineering plastic and preparation method thereof | |
JP5200563B2 (en) | Insulated wire | |
EP2862895A1 (en) | Thermoplastic moulding materials | |
US4276251A (en) | Power and control cables having flexible polyolefin insulation | |
CN111393744B (en) | TPE material with antibacterial conductivity and preparation method thereof | |
CN113817270A (en) | Polypropylene composite material and preparation method thereof | |
EP1359196B1 (en) | Polyamide composition reinforced with layered silicate | |
WO1998021267A2 (en) | Method for producing a thermoplastic elastomer material | |
DE112014002917T5 (en) | Resin composition for lead wrap material, insulated wire and harness | |
CN1036091C (en) | Pipe material made from plastic alloy double-composite modified reinforced fibre glass and manufacturing method thereof | |
DE3873128T2 (en) | METHOD FOR PRODUCING AN ELECTRICAL TRANSMISSION LINE. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20040604 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SI SK TR |
|
17Q | First examination report despatched |
Effective date: 20101104 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS AKTIENGESELLSCHAFT |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS HEALTHCARE GMBH |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20180703 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: H05K 7/20 20060101ALI20040723BHEP Ipc: C08K 3/00 20180101AFI20040723BHEP Ipc: F28D 21/00 20060101ALI20040723BHEP |