EP1077097B1 - Verwendung von Kunststoff/Kohlenstoff-Aerogelen als Kernwerkstoff - Google Patents
Verwendung von Kunststoff/Kohlenstoff-Aerogelen als Kernwerkstoff Download PDFInfo
- Publication number
- EP1077097B1 EP1077097B1 EP00116659A EP00116659A EP1077097B1 EP 1077097 B1 EP1077097 B1 EP 1077097B1 EP 00116659 A EP00116659 A EP 00116659A EP 00116659 A EP00116659 A EP 00116659A EP 1077097 B1 EP1077097 B1 EP 1077097B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- gel
- use according
- plastic
- sol
- molding
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C1/00—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds
Description
22 g Resorcinol + 20 ml Formaldehydlösung (37 %ig) + 0,013 g Na2CO3 + 82 ml H2O und Rühren bei Raumtemperatur
Beispiel: 10 cm3 Alodur® - Sand mit einer Korngröße von 0,0633 µm bis 0,125 µm nimmt 45 ml Lösung auf. Der Sand wird unter Rühren der Aerogellösung zugefügt.
Befüllung der Kernform unter Rüttel- und Klopfverdichtung
Trocknen der verschlossenen Form 24 Stunden bei 40 °C im Trockenschrank
Claims (8)
- Verwendung von hochporösen, offenporigen Kunststoff- und/oder Kohlenstoffaerogelen, erhältlich durch Sol-Gel-Polymerisation von organischen Kunststoffmaterialien als Kernwerkstoff für den Formguss.
- Verwendung nach Anspruch 1, enthaltend anorganische oder organische Füllstoffmaterialien, insbesondere in Pulver- oder in Faserform.
- Verwendung nach Anspruch 2, dadurch gekennzeichnet, dass die anorganischen Füllstoffmaterialien ausgewählt sind aus Aluminiumoxid, Titandioxid, Zirkoniumoxid und Quarz und deren Gemische, insbesondere in einer Menge von 5 bis 60 Vol.-%.
- Verwendung nach Anspruch 2, dadurch gekennzeichnet, dass die Füllstoffe ausgewählt sind aus thermoplastischen oder duroplastischen Kunststoffpartikeln, insbesondere Polystyrol.
- Verwendung nach einem der Ansprüche 1 bis 4, umfassend ein Resorcin/Formaldehyd-Sol-Gel und einen basischen Polymerisationskatalysator, insbesondere Ammoniumhydroxid und/oder Natriumcarbonat.
- Verwendung nach einem der Ansprüche 1 bis 5, wobei mana) eine Negativform eines Kerns mit einem Kunststoffsol geeigneter Zusammensetzung und einem geeigneten Katalysator füllt,b) das Sol in ein Gel überführt,c) das erstarrte Gel in an sich bekannter Weise in üblichen Wachsmodellen des Fein und Formgusses einsetzt undd) das Gel entfernt.
- Verwendung nach einem der Ansprüche 1 bis 6, wobei man das Gel durch Wasserhochdruckstrahl entfernt.
- Verwendung nach einem der Ansprüche 1 bis 6, wobei man das Gel durch Pyrolyse bei einer Temperatur von wenigstens 1000 °C im Verlauf von 24 Stunden entfernt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19939062 | 1999-08-18 | ||
DE19939062A DE19939062A1 (de) | 1999-08-18 | 1999-08-18 | Verwendung von Kunststoff/Kohlenstoff-Aerogelen als Kernwerkstoff |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1077097A1 EP1077097A1 (de) | 2001-02-21 |
EP1077097B1 true EP1077097B1 (de) | 2004-02-11 |
Family
ID=7918729
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00116659A Expired - Lifetime EP1077097B1 (de) | 1999-08-18 | 2000-08-02 | Verwendung von Kunststoff/Kohlenstoff-Aerogelen als Kernwerkstoff |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1077097B1 (de) |
AT (1) | ATE259265T1 (de) |
DE (2) | DE19939062A1 (de) |
ES (1) | ES2215527T3 (de) |
PT (1) | PT1077097E (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10126865B4 (de) * | 2001-06-01 | 2005-09-08 | Neue Materialien Würzburg GmbH | Substrat und Verwendung des Substrats |
DE10216403B4 (de) * | 2002-04-12 | 2004-03-18 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Aerogelgebundene Formstoffe mit hoher Wärmeleitfähigkeit |
DE10216464B4 (de) * | 2002-04-12 | 2004-04-15 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Silica gebundene Kernwerkstoffe, Verfahren zu deren Herstellung und deren Verwendung |
DE10227512B4 (de) | 2002-06-19 | 2004-07-08 | Georg Fischer Gmbh & Co.Kg | Verfahren zur Herstellung von Giesskernen oder Formen, sowie nach diesem Verfahren hergestellte Giesskerne oder Formen |
DE10352574A1 (de) * | 2003-11-11 | 2005-06-16 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Füllstoff enthaltende Aerogele |
DE10357539A1 (de) | 2003-12-10 | 2005-07-21 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Herstellung von füllstoffhaltigen Aerogelen |
WO2006010449A2 (de) * | 2004-07-23 | 2006-02-02 | Ceramtec Ag Innovative Ceramic Engineering | Keramische gusskerne |
DE102006003198A1 (de) * | 2006-01-24 | 2007-07-26 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Kerne für den Leichtmetall- und/oder den Feinguss |
DE102006021151A1 (de) * | 2006-05-06 | 2007-11-08 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Kernwerkstoff aus tonhaltigem Sand enthaltendem Aerogelsand |
DE102008056842A1 (de) * | 2008-11-12 | 2010-05-20 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Gießereikerne mit verbesserten Entkernungseigenschaften II |
DE102008056856A1 (de) * | 2008-11-12 | 2010-05-20 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Gießereikerne mit verbesserten Entkernungseigenschaften I |
DE102009024182B3 (de) * | 2009-06-08 | 2011-03-03 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Verfahren zur Bildung und zum Entformen einer Form und/oder eines Kerns beim Formguss |
DE102015225227A1 (de) * | 2015-12-15 | 2017-06-22 | Robert Bosch Gmbh | Speiser für insbesondere aus Gusseisen bestehende Gussstücke |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3574548A (en) * | 1969-08-11 | 1971-04-13 | Atomic Energy Commission | Process for manufacturing a cellular carbon body |
US4032105A (en) * | 1975-04-25 | 1977-06-28 | The United States Of America As Represented By The United States Energy Research And Development Administration | Mold with improved core for metal casting operation |
DE3004466A1 (de) * | 1980-02-07 | 1981-08-13 | Sigri Elektrographit Gmbh, 8901 Meitingen | Verfahren zum herstellen eines leicht entfernbaren giesskerns |
US4402927A (en) * | 1980-04-22 | 1983-09-06 | Dardel Guy Von | Silica aerogel |
JPH0481243A (ja) * | 1990-07-23 | 1992-03-13 | Mitsui Petrochem Ind Ltd | 溶融金属鋳造用型材 |
US5086085A (en) * | 1991-04-11 | 1992-02-04 | The United States Of America As Represented By The Department Of Energy | Melamine-formaldehyde aerogels |
US5386706A (en) * | 1993-06-10 | 1995-02-07 | Praxair Technology, Inc. | Low heat-leak, coherent-aerogel, cryogenic system |
DE19523382C2 (de) * | 1995-06-30 | 2003-04-30 | Jochen Fricke | Kohlenstoffaerogele und Verfahren zu deren Herstellung |
DE19721600A1 (de) * | 1997-05-23 | 1998-11-26 | Hoechst Ag | Nanoporöse interpenetrierende organisch-anorganische Netzwerke |
DE19911847A1 (de) * | 1999-03-17 | 2000-09-28 | Deutsch Zentr Luft & Raumfahrt | Fein- und Formguß in Kunststoff/Kohlenstoff-Aerogelen |
-
1999
- 1999-08-18 DE DE19939062A patent/DE19939062A1/de not_active Ceased
-
2000
- 2000-08-02 EP EP00116659A patent/EP1077097B1/de not_active Expired - Lifetime
- 2000-08-02 PT PT00116659T patent/PT1077097E/pt unknown
- 2000-08-02 AT AT00116659T patent/ATE259265T1/de not_active IP Right Cessation
- 2000-08-02 DE DE50005241T patent/DE50005241D1/de not_active Expired - Lifetime
- 2000-08-02 ES ES00116659T patent/ES2215527T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
PT1077097E (pt) | 2004-06-30 |
EP1077097A1 (de) | 2001-02-21 |
DE19939062A1 (de) | 2001-02-22 |
DE50005241D1 (de) | 2004-03-18 |
ATE259265T1 (de) | 2004-02-15 |
ES2215527T3 (es) | 2004-10-16 |
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