EP1456287A2 - Wärmeleitfähige compounds und verwendungen dazu - Google Patents
Wärmeleitfähige compounds und verwendungen dazuInfo
- 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- Withdrawn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 (de) | 2001-12-17 | 2001-12-17 | Wärmeleitfähige thermoplastische Compounds und Verwendung dazu |
| DE10161882 | 2001-12-17 | ||
| PCT/DE2002/004560 WO2003051971A2 (de) | 2001-12-17 | 2002-12-12 | Wärmeleitfähige compounds und verwendungen dazu |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1456287A2 true EP1456287A2 (de) | 2004-09-15 |
Family
ID=7709493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02798270A Withdrawn EP1456287A2 (de) | 2001-12-17 | 2002-12-12 | Wärmeleitfähige compounds und verwendungen dazu |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8062726B2 (de) |
| EP (1) | EP1456287A2 (de) |
| CN (1) | CN1302054C (de) |
| DE (1) | DE10161882A1 (de) |
| WO (1) | WO2003051971A2 (de) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10320464B4 (de) * | 2003-05-08 | 2008-04-30 | Forschungszentrum Karlsruhe Gmbh | Verwendung einer Formmasse zur Herstellung von gesinterten Formteilen |
| DE10359573A1 (de) * | 2003-12-18 | 2005-07-28 | Robert Bosch Gmbh | Wärmeübertragungseinheit für einen Wärmetauscher |
| EP1931905B1 (de) * | 2005-09-16 | 2012-08-08 | DYTECH - Dynamic Fluid Technologies S.p.A. | Mehrlagige rohrleitung zum transportieren und erhitzen eines fluids |
| ATE422022T1 (de) * | 2005-09-16 | 2009-02-15 | Dayco Fluid Technologies Spa | Vorrichtung zur reinigung von abgasen eines fahrzeugs durch gezielte katalytische reduktion mit einer beheizten rohrleitung |
| DE102007037316A1 (de) * | 2007-08-08 | 2009-02-12 | Lanxess Deutschland Gmbh | Thermisch leitfähige und elektrisch isolierende thermoplastische 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 |
| WO2011090759A2 (en) | 2009-12-29 | 2011-07-28 | Saint-Gobain Performance Plastics Corporation | A flexible tubing material and method of forming the 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 (zh) * | 2010-07-08 | 2012-12-26 | 中国科学院化学研究所 | 导热复合材料及其制备方法 |
| ES2665528T3 (es) | 2010-09-30 | 2018-04-26 | Ube Industries, Ltd. | Composición de resina de poliamida y artículo moldeado que la comprende |
| PL2697568T3 (pl) * | 2011-04-11 | 2017-04-28 | BSH Hausgeräte GmbH | Element obsługowy i urządzenie gospodarstwa domowego |
| CN102954291A (zh) * | 2011-08-22 | 2013-03-06 | 爱康企业集团(上海)有限公司 | 导热型地源热泵管材 |
| EP2823515A4 (de) | 2012-03-06 | 2015-08-19 | Soraa Inc | Lichtemittierende dioden mit materialschichten mit niedrigem brechungsindex zur reduzierung von lichtleitungseffekten |
| US10145026B2 (en) | 2012-06-04 | 2018-12-04 | Slt Technologies, Inc. | Process for large-scale ammonothermal manufacturing of semipolar gallium nitride boules |
| KR101769313B1 (ko) * | 2012-06-06 | 2017-08-18 | 생-고뱅 퍼포먼스 플라스틱스 코포레이션 | 열가소성 탄성체 튜브 및 이의 제조 및 이용방법 |
| US9978904B2 (en) | 2012-10-16 | 2018-05-22 | Soraa, Inc. | Indium gallium nitride light emitting devices |
| CN102924828B (zh) * | 2012-11-07 | 2015-01-07 | 安徽万朗磁塑集团有限公司 | 一种tpv材质磁性门封条及其制备方法 |
| CN110305357B (zh) * | 2012-11-27 | 2021-06-01 | 积水化学工业株式会社 | 电子装置用热传导性发泡体片和电子装置用热传导性叠层体 |
| 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 (de) * | 2013-04-01 | 2014-10-08 | Emerson Electric Co. | Warmwasserspenderarmatur mit Wärmedämmschicht |
| GB2515069B (en) * | 2013-06-13 | 2017-03-22 | Jer Innovations Ltd | Heat exchange apparatus |
| WO2015047961A2 (en) | 2013-09-24 | 2015-04-02 | Adagio Medical, Inc. | Endovascular near critical fluid based cryoablation catheter and related methods |
| EP2862894B1 (de) | 2013-10-15 | 2017-12-27 | LANXESS Deutschland GmbH | Thermoplastische Formmassen |
| US9419189B1 (en) | 2013-11-04 | 2016-08-16 | Soraa, Inc. | Small LED source with high brightness and high efficiency |
| TWI614332B (zh) * | 2016-09-22 | 2018-02-11 | 國立交通大學 | 具有導熱性之高分子複合物及其製備方法 |
| CN106497012A (zh) * | 2016-11-21 | 2017-03-15 | 国网河南省电力公司周口供电公司 | 变压器外壳材料及其制备方法 |
| JP6746540B2 (ja) * | 2017-07-24 | 2020-08-26 | 積水化学工業株式会社 | 熱伝導シート |
| EP3678567B1 (de) | 2017-09-05 | 2025-09-17 | Adagio Medical, Inc. | Ablationskatheter mit einem formgedächtnismandrin |
| CN107880243A (zh) * | 2017-11-23 | 2018-04-06 | 广东元星工业新材料有限公司 | 一种高耐热高性能聚氨酯弹性体及其制备方法 |
| CN111836593B (zh) * | 2018-01-10 | 2024-12-17 | 艾达吉欧医疗公司 | 具有传导性衬套的冷冻消融元件 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0271094A (ja) * | 1988-09-05 | 1990-03-09 | Bando Chem Ind Ltd | 樹脂製熱交換管 |
| 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 (ja) * | 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 | 複合体シートおよびその製造方法 |
| JP3543663B2 (ja) * | 1999-03-11 | 2004-07-14 | 信越化学工業株式会社 | 熱伝導性シリコーンゴム組成物及びその製造方法 |
| JP4678969B2 (ja) * | 2000-03-23 | 2011-04-27 | 北川工業株式会社 | 熱伝導材 |
| WO2003093853A1 (de) * | 2002-05-02 | 2003-11-13 | Siemens Aktiengesellschaft | Gradientenspulensystem für ein magnet-resonanz-tomographiegerät mit effektiverer kühlung |
-
2001
- 2001-12-17 DE DE10161882A patent/DE10161882A1/de not_active Withdrawn
-
2002
- 2002-12-12 WO PCT/DE2002/004560 patent/WO2003051971A2/de not_active Ceased
- 2002-12-12 US US10/499,043 patent/US8062726B2/en not_active Expired - Fee Related
- 2002-12-12 CN CNB028251873A patent/CN1302054C/zh not_active Expired - Lifetime
- 2002-12-12 EP EP02798270A patent/EP1456287A2/de not_active Withdrawn
Non-Patent Citations (1)
| Title |
|---|
| See references of WO03051971A2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1302054C (zh) | 2007-02-28 |
| DE10161882A1 (de) | 2003-10-02 |
| CN1604929A (zh) | 2005-04-06 |
| US20050049345A1 (en) | 2005-03-03 |
| WO2003051971A3 (de) | 2003-09-25 |
| US8062726B2 (en) | 2011-11-22 |
| WO2003051971A2 (de) | 2003-06-26 |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
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| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SIEMENS HEALTHCARE GMBH |
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