EP1036610A1 - Fein- und Formguss in Kunststoff/Kohlenstoffaerogelen - Google Patents
Fein- und Formguss in Kunststoff/Kohlenstoffaerogelen Download PDFInfo
- Publication number
- EP1036610A1 EP1036610A1 EP00104214A EP00104214A EP1036610A1 EP 1036610 A1 EP1036610 A1 EP 1036610A1 EP 00104214 A EP00104214 A EP 00104214A EP 00104214 A EP00104214 A EP 00104214A EP 1036610 A1 EP1036610 A1 EP 1036610A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wax
- gel
- sol
- temperature
- plastic
- 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.)
- Granted
Links
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 9
- 239000004964 aerogel Substances 0.000 title abstract description 11
- 238000005266 casting Methods 0.000 title description 8
- 238000000034 method Methods 0.000 claims abstract description 19
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000000203 mixture Substances 0.000 claims abstract description 10
- 238000000197 pyrolysis Methods 0.000 claims abstract description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003054 catalyst Substances 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims abstract description 5
- 239000000945 filler Substances 0.000 claims abstract description 5
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 5
- 239000004793 Polystyrene Substances 0.000 claims abstract description 3
- 239000002245 particle Substances 0.000 claims abstract description 3
- 229920002223 polystyrene Polymers 0.000 claims abstract description 3
- 239000010453 quartz Substances 0.000 claims abstract description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract 4
- 239000002685 polymerization catalyst Substances 0.000 claims abstract 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract 2
- 239000004033 plastic Substances 0.000 claims description 31
- 229920003023 plastic Polymers 0.000 claims description 31
- 239000012778 molding material Substances 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 13
- 238000001035 drying Methods 0.000 claims description 10
- 239000004966 Carbon aerogel Substances 0.000 claims description 9
- 238000005058 metal casting Methods 0.000 claims description 7
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 7
- 239000011148 porous material Substances 0.000 claims description 7
- 239000000155 melt Substances 0.000 claims description 5
- 239000011256 inorganic filler Substances 0.000 claims description 3
- 239000012766 organic filler Substances 0.000 claims description 3
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 2
- 229920001169 thermoplastic Polymers 0.000 claims description 2
- 229920001187 thermosetting polymer Polymers 0.000 claims description 2
- 239000004416 thermosoftening plastic Substances 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 238000009736 wetting Methods 0.000 claims description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 239000000908 ammonium hydroxide Substances 0.000 claims 1
- 238000005495 investment casting Methods 0.000 abstract description 5
- 229910045601 alloy Inorganic materials 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 3
- 230000008018 melting Effects 0.000 abstract description 3
- 238000002844 melting Methods 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 abstract 1
- 239000001099 ammonium carbonate Substances 0.000 abstract 1
- 235000012501 ammonium carbonate Nutrition 0.000 abstract 1
- 150000002739 metals Chemical class 0.000 abstract 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 abstract 1
- 229910010271 silicon carbide Inorganic materials 0.000 abstract 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 abstract 1
- 239000000499 gel Substances 0.000 description 21
- 239000000243 solution Substances 0.000 description 14
- 239000007789 gas Substances 0.000 description 5
- 238000001879 gelation Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 229960001755 resorcinol Drugs 0.000 description 4
- 238000000352 supercritical drying Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000003980 solgel method Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000004810 polytetrafluoroethylene Substances 0.000 description 2
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000008098 formaldehyde solution Substances 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 239000003110 molding sand Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000011505 plaster Substances 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000011240 wet gel Substances 0.000 description 1
Classifications
-
- 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
- B22C1/16—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents
- B22C1/165—Compositions of refractory mould or core materials; Grain structures thereof; Chemical or physical features in the formation or manufacture of moulds characterised by the use of binding agents; Mixtures of binding agents in the manufacture of multilayered shell moulds
-
- 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
Definitions
- the invention relates to a molding material for the fine and mold casting of metals or metal alloys comprising plastic and / or carbon aerogels and a process for the production of corresponding molding materials.
- Investment casting in ceramic molded shells is a standard casting technique for precision parts to manufacture from various alloys.
- the shapes are in usually made using the lost wax technique; d. H. a wax body
- the part to be cast is wetted with a silica sol in several steps sanded, dried and then the shell is fired, whereby the wax is melted in an autoclave or burned.
- Means Modern casting processes make it possible to cast in line with the shape and close to the final shape (J. Sprunk, W. Blank, W. Grossmann, E. Hauschild, H. Rieksmeier, H.G. Rosselnbruch; Investment casting for all industrial sectors, 2nd edition, headquarters for casting use, Düsseldorf 1987; K.A. Krekeler, investment casting, in: manual of manufacturing technology Vol. 1., editor G. Speer, Hanser Verlag, Kunststoff 1981).
- Aerogels are highly porous, open-pored, oxidic solids that usually via sol-gel processes from metal alkoxides by polymerization, polycondensation to gels and subsequent supercritical drying. For some years now, it has also been possible to add plastics using sol-gel processes gel and by supercritical drying in a highly porous organic Convert solid body. Pyrolysis of such plastic aerogels under protective gas or in a vacuum at temperatures above 1000 ° C converts them into carbon aerogels around. Like the oxidic aerogels, plastic and carbon have aerogels extremely low effective thermal conductivities (order of magnitude some mW / K / m) and are considerably lighter. The physical and mechanical Properties of plastic and carbon aerogels are in the literature documented (R.W.
- a Molding material for the fine and mold casting of metals or metal alloys comprising highly porous, open-pore plastic and / or carbon aerogels, available through sol-gel polymerization of organic plastic materials optionally followed by partial or complete pyrolysis of the obtained Plastic aerogels.
- the molding material according to the invention is particularly suitable for use in lost wax processes and need not, as in the prior art for oxidic Gels can be applied in several steps.
- the molds obtained in this way are filled with melt using customary techniques and the melt starts.
- heat is dissipated over the mold shell or the molding sand.
- pour and freeze in
- aerogels mean, since carbon aerogels are quasi adiabatic, that the heat dissipation only via feeders and risers or specifically attached heat sink takes place, skillfully the risers and feeders can be used by yourself, but do not have to. That way is one fully controlled solidification is possible and the structure can accordingly required range of properties can be adjusted.
- the airgel forms produced according to the invention are particularly suitable for the casting of aluminum alloys (whereby the casting mold practically does not heat up must be, since no heat dissipation takes place by itself). This increases the economy because energy costs can be reduced. Magnesium and titanium alloys also do not react with carbon, so that these carbon airgel forms also for these alloys under protective gas or Offer vacuum as film material.
- a particular advantage of the molding materials according to the invention is that the Sol-gel formation at room temperature, that is, in particular at temperatures completed below the pour point of the wax within a few hours can be.
- Supercritical drying as with the purely inorganic Gelling is not necessary. Nevertheless, it is possible to determine the pore size in the micrometer range adjust. When drying in the supercritical temperature range pore sizes in the nanometer range are also possible.
- the molding materials according to the invention can also be inorganic or contain organic filler materials. These are essentially Understand solid materials that are inert under solidification conditions.
- Inorganic Filler materials are selected, for example, from aluminum oxide, titanium dioxide and / or quartz, each in an amount of 5 to 30 vol .-%. used can be.
- Fillers for the purposes of the present invention further comprise Fiber materials that have a fiber reinforcement with organic, inorganic or allow carbon and / or SiC fibers with approximately equal volume fractions.
- organic fillers for example thermoplastic or thermosetting plastic particles, for example polystyrene and / or use organic (polyacrylonitrile) fibers.
- thermoplastic or thermosetting plastic particles for example polystyrene and / or use organic (polyacrylonitrile) fibers.
- these materials are also melted out during the pyrolysis of the plastic gels or be burned.
- using such materials is one Control of shrinkage possible during pyrolysis.
- Plastic aerogels based on resorcinol / formaldehyde used in suitable composition and suitable content of basic catalyst at temperatures between 20 and 50 ° C without supercritical drying in one microstructured plastic airgel can be transferred.
- the composition of the sol-gel polymerization can be set such that, for example First, a highly viscous liquid is created, which is applied to a wax mold can be applied. This is also possible in several work steps, so that the layer thickness is adapted to the needs of the applications in the foundry can be.
- the temperature of the conversion of the solution into a plastic airgel must be Melting point of the wax can be adjusted. After converting to a Plastic airgel can melt the wax and at the same time the conversion to a carbon airgel takes place in the absence of air.
- Dependent the composition of the starting solution, the gelation temperature, the density of the resulting porous body can be made into molds, as both plastic and carbon airgel, on a micrometer scale are smooth on the surface and reproduce sharp contours.
- the production of molds up to the plastic airgel usually takes 1 to 3 days, often only up to 24 hours.
- the pyrolysis time is determined by the thickness the mold shell; with a wall thickness of 1 cm, for example, the time is less than 24 hours, usually 10 hours.
- a glass container in which a wax model (weighted down with steel plates) of the Shaped body was filled with the solution until the model was complete was covered.
- the container was closed. Gelled within two hours the solution in an air circulator (Heraeus) at 40 ° 0. It became a color change the clear solution observed after ocher yellow / light brown. The drying of the gel was obtained in the air circulator over 24 hours. Subsequently the wax was melted out at a temperature of 60 ° C.
- the plastic airgel was placed in a cold muffle furnace brought in.
- the oven was slowly (3 hours) heated to 1050 ° 0, where continuous nitrogen (argon or another protective gas is possible analogously) was blown through to avoid oxidation.
- the temperature of 1050 ° C was maintained for 24 hours.
- the mixture was then cooled with a constant gas flow and the carbon dioxide airgel form taken.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Mold Materials And Core Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
- Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
Description
Claims (10)
- Formstoff für den Fein- und Formguss von Metallen oder Metall-Legierungen umfassend hochporöse, offenporige Kunststoff- und/oder Kohlenstoffaerogele, erhältlich durch Sol-Gel-Polymerisation von organischen Kunststoffmaterialien gegebenenfalls gefolgt von teilweise oder vollständiger Pyrolyse des erhaltenen Kunststoffaerogels.
- Formstoff nach Anspwch 1, enthaltend anorganische oder organische Füllstoffmaterialien.
- Formstoff nach Anspruch 2, dadurch gekennzeichnet, dass die anorganischen Füllstoffmaterialien ausgewählt sind aus Aluminiumoxid, Titandioxid und/oder Quarz, insbesondere in einer Menge von 5 bis 30 Vol.-%.
- Formstoff nach Anspruch 2, dadurch gekennzeichnet, dass die Füllstoffe ausgewählt sind aus thermoplastischen oder duroplastischen Kunststoffpartikeln, insbesondere Polystyrol.
- Formstoff nach Anspruch 2, dadurch gekennzeichnet, dass die Füllstoffe organische, anorganische Kohlenstoff und/oder SiC-Fasern umfassen.
- Formstoff nach einem der Ansprüche 1 bis 5, umfassend ein Resorcin/Formaldehyd-Sol-Gel und einen basischen Polymerisationskatalysator, insbesondere Ammoniumhydroxid und/oder Natriumcarbonat.
- Verfahren zur Herstellung von Gussformen für den Fein- und Formguss von Metallen oder Metall-Legierungen unter Verwendung von hochporösen, offenporigen Kunststoff- und/oder Kohlenstoffaerogelen, wobei mana) eine Wachsform mit einem Kunststoffsol geeigneter Zusammensetzung und einem geeigneten Katalysator benetzt,b) bei einer Temperatur unterhalb der Fließtemperatur des Wachses das Sol in ein Gel überführt,b') gegebenenfalls eine oder weitere Schichten des Sols aufbringt und jeweils teilweise oder vollständig in die Gelform überführt,c) das Gel bei einer Temperatur unterhalb des Fließpunktes des Wachses trocknet undd) bei einer Temperatur oberhalb der Fließtemperatur des Wachses dieses aus dem erstarrten Gel ausschmilzt oder ausbrennt.
- Verfahren zur Herstellung von Gussformen für den Fein- und Formguss von Metallen oder Metall-Legierungen unter Verwendung von hochporösen, offenporigen Kunststoff- und/oder Kohlenstoffaerogelen, wobei mana) einen Wachsformkörper in einen Behälter einbringt,b) den Behälter teilweise oder vollständig mit einem Kunststoffsol auffüllt,c) bei einer Temperatur unterhalb der Fließtemperatur des Wachses das Sol in die Gelform überführt,d) das Gel bei einer Temperatur unterhalb der Fließtemperatur des Wachses trocknet unde) bei einer Temperatur oberhalb der Fließtemperatur des Wachses dieses aus dem erstarrten Gel ausschmilzt oder ausbrennt.
- Verfahren nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass man die Trocknung des Gels bei einer Temperatur im Bereich von 20 bis 50 °C im Verlauf von weniger als 24 Stunden durchführt.
- Verfahren nach einem der Ansprüche 7 bis 8, dadurch gekennzeichnet, dass man die Pyrolyse des erstarrten Gels bei einer Temperatur von wenigstens 600 °C, insbesondere wenigstens 1000 °C innerhalb von 4 bis 24 Stunden durchführt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19911847A DE19911847A1 (de) | 1999-03-17 | 1999-03-17 | Fein- und Formguß in Kunststoff/Kohlenstoff-Aerogelen |
DE19911847 | 1999-03-17 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1036610A1 true EP1036610A1 (de) | 2000-09-20 |
EP1036610B1 EP1036610B1 (de) | 2005-08-31 |
Family
ID=7901270
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00104214A Expired - Lifetime EP1036610B1 (de) | 1999-03-17 | 2000-03-01 | Fein- und Formguss in Kunststoff/Kohlenstoffaerogelen |
Country Status (4)
Country | Link |
---|---|
US (2) | US6599953B1 (de) |
EP (1) | EP1036610B1 (de) |
AT (1) | ATE303214T1 (de) |
DE (2) | DE19911847A1 (de) |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1077097A1 (de) * | 1999-08-18 | 2001-02-21 | DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verwendung von Kunststoff/Kohlenstoff-Aerogelen als Kernwerkstoff |
DE10216403A1 (de) * | 2002-04-12 | 2003-11-13 | Deutsch Zentr Luft & Raumfahrt | Aerogelgebundene Formstoffe mit hoher Wärmeleitfähigkeit |
WO2005046909A1 (de) * | 2003-11-11 | 2005-05-26 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Füllstoff enthaltende aerogele |
DE102004027382A1 (de) * | 2004-06-04 | 2006-01-05 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Thermisch zersetzbare Kohlenstoff-Aerogelsande |
EP2204246A3 (de) * | 2008-11-12 | 2012-01-04 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Gießereikerne mit verbesserten Entkernungseigenschaften I |
CN102343285A (zh) * | 2011-07-18 | 2012-02-08 | 南京工业大学 | 一种块状硅-炭复合气凝胶的制备方法 |
CN102351506A (zh) * | 2011-07-18 | 2012-02-15 | 南京工业大学 | 一种块状耐高温硅-炭复合气凝胶材料的制备方法 |
WO2017102231A1 (de) * | 2015-12-15 | 2017-06-22 | Robert Bosch Gmbh | Speiser für insbesondere aus gusseisen bestehende gussstücke |
CN109675620A (zh) * | 2017-10-18 | 2019-04-26 | 中国石油化工股份有限公司 | 含钴催化剂及其制备方法和应用 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19911847A1 (de) * | 1999-03-17 | 2000-09-28 | Deutsch Zentr Luft & Raumfahrt | Fein- und Formguß in Kunststoff/Kohlenstoff-Aerogelen |
US6806299B2 (en) * | 2001-05-18 | 2004-10-19 | The Regents Of The University Of California | Preparation of hydrophobic organic aeorgels |
WO2006010449A2 (de) * | 2004-07-23 | 2006-02-02 | Ceramtec Ag Innovative Ceramic Engineering | Keramische gusskerne |
US20070089849A1 (en) * | 2005-10-24 | 2007-04-26 | Mcnulty Thomas | Ceramic molds for manufacturing metal casting and methods of manufacturing thereof |
US8851442B2 (en) * | 2008-01-22 | 2014-10-07 | Honeywell International Inc. | Aerogel-bases mold for MEMS fabrication and formation thereof |
US8293657B2 (en) | 2010-11-05 | 2012-10-23 | Honeywell International Inc. | Sacrificial layers made from aerogel for microelectromechanical systems (MEMS) device fabrication processes |
BR112014026360A2 (pt) | 2012-04-23 | 2017-06-27 | Gen Electric | aerofólio de turbina e pá de turbina |
DE102016223619A1 (de) * | 2015-12-15 | 2017-06-22 | Robert Bosch Gmbh | Schlichte zum Auftragen auf die poröse Oberfläche von Formen und/oder Kernen für den Metallguss |
EP3529301B1 (de) * | 2016-10-24 | 2023-11-29 | Blueshift Materials, Inc. | Faserverstärktes organisches polymer-aerogel |
EP3405517B1 (de) | 2017-01-26 | 2021-11-10 | Blueshift Materials, Inc. | Organische polymeraerogele enthaltend mikrostrukturen |
BG67252B1 (bg) * | 2017-06-27 | 2021-02-15 | Е.Миролио ЕАД | Метод за получаване на вискозна изкуствена коприна с променяща се дебелина, продукт, получен по този метод и инсталация за реализиране на метода |
CN107498003A (zh) * | 2017-08-10 | 2017-12-22 | 合肥市田源精铸有限公司 | 一种轻质耐磨钢铸件的加工方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US4873218A (en) * | 1988-05-26 | 1989-10-10 | The United States Department Of Energy | Low density, resorcinol-formaldehyde aerogels |
DE19721600A1 (de) * | 1997-05-23 | 1998-11-26 | Hoechst Ag | Nanoporöse interpenetrierende organisch-anorganische Netzwerke |
DE19738466C1 (de) * | 1997-09-03 | 1998-12-24 | Deutsch Zentr Luft & Raumfahrt | Stranggußvorrichtung |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5242647A (en) * | 1990-08-23 | 1993-09-07 | Regents Of The University Of California | Method of casting aerogels |
DE19523382C2 (de) * | 1995-06-30 | 2003-04-30 | Jochen Fricke | Kohlenstoffaerogele und Verfahren zu deren Herstellung |
AU7720596A (en) * | 1995-11-09 | 1997-05-29 | Aspen Systems, Inc. | Flexible aerogel superinsulation and its manufacture |
US6099965A (en) * | 1996-05-15 | 2000-08-08 | Hyperion Catalysis International, Inc. | Rigid porous carbon structures, methods of making, methods of using and products containing same |
DE19911847A1 (de) * | 1999-03-17 | 2000-09-28 | Deutsch Zentr Luft & Raumfahrt | Fein- und Formguß in Kunststoff/Kohlenstoff-Aerogelen |
-
1999
- 1999-03-17 DE DE19911847A patent/DE19911847A1/de not_active Ceased
-
2000
- 2000-03-01 AT AT00104214T patent/ATE303214T1/de not_active IP Right Cessation
- 2000-03-01 DE DE50011046T patent/DE50011046D1/de not_active Expired - Lifetime
- 2000-03-01 EP EP00104214A patent/EP1036610B1/de not_active Expired - Lifetime
- 2000-03-17 US US09/527,809 patent/US6599953B1/en not_active Expired - Fee Related
-
2003
- 2003-05-30 US US10/449,794 patent/US6887915B2/en not_active Expired - Fee Related
Patent Citations (3)
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EP1077097A1 (de) * | 1999-08-18 | 2001-02-21 | DLR Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verwendung von Kunststoff/Kohlenstoff-Aerogelen als Kernwerkstoff |
DE10216403A1 (de) * | 2002-04-12 | 2003-11-13 | Deutsch Zentr Luft & Raumfahrt | Aerogelgebundene Formstoffe mit hoher Wärmeleitfähigkeit |
DE10216403B4 (de) * | 2002-04-12 | 2004-03-18 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Aerogelgebundene Formstoffe mit hoher Wärmeleitfähigkeit |
WO2005046909A1 (de) * | 2003-11-11 | 2005-05-26 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Füllstoff enthaltende aerogele |
DE102004027382A1 (de) * | 2004-06-04 | 2006-01-05 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Thermisch zersetzbare Kohlenstoff-Aerogelsande |
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Also Published As
Publication number | Publication date |
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US6887915B2 (en) | 2005-05-03 |
US6599953B1 (en) | 2003-07-29 |
DE19911847A1 (de) | 2000-09-28 |
DE50011046D1 (de) | 2005-10-06 |
EP1036610B1 (de) | 2005-08-31 |
US20030212152A1 (en) | 2003-11-13 |
ATE303214T1 (de) | 2005-09-15 |
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