DE2140208B2 - CHEMICALLY RESISTANT, TEMPERATURE RESISTANT, INORGANICALLY STRUCTURED LACQUERED PAINT - Google Patents

CHEMICALLY RESISTANT, TEMPERATURE RESISTANT, INORGANICALLY STRUCTURED LACQUERED PAINT

Info

Publication number
DE2140208B2
DE2140208B2 DE19712140208 DE2140208A DE2140208B2 DE 2140208 B2 DE2140208 B2 DE 2140208B2 DE 19712140208 DE19712140208 DE 19712140208 DE 2140208 A DE2140208 A DE 2140208A DE 2140208 B2 DE2140208 B2 DE 2140208B2
Authority
DE
Germany
Prior art keywords
paint
resistant
inorganically
structured
binder
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
Application number
DE19712140208
Other languages
German (de)
Other versions
DE2140208A1 (en
DE2140208C3 (en
Inventor
Franz 8000 München; Wydra Gerhard 8060 Dachau Puchinger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MTU Aero Engines GmbH
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to DE2006095A priority Critical patent/DE2006095C3/en
Application filed by MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Priority claimed from DE19712140208 external-priority patent/DE2140208C3/en
Priority to DE19712140208 priority patent/DE2140208C3/en
Priority to FI2131/72A priority patent/FI57606C/en
Priority to NO2850/72A priority patent/NO138730C/en
Priority to GB3744872A priority patent/GB1391620A/en
Priority to SE7210453A priority patent/SE390312B/en
Priority to FR7229142A priority patent/FR2148629B1/fr
Priority to US00279764A priority patent/US3857717A/en
Publication of DE2140208A1 publication Critical patent/DE2140208A1/en
Publication of DE2140208B2 publication Critical patent/DE2140208B2/en
Publication of DE2140208C3 publication Critical patent/DE2140208C3/en
Application granted granted Critical
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22C—FOUNDRY MOULDING
    • B22C3/00—Selection of compositions for coating the surfaces of moulds, cores, or patterns
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Materials Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Mold Materials And Core Materials (AREA)
  • Paints Or Removers (AREA)

Description

Die Erfindung bezieht sich auf ein chemisch beständiges, temperaturbeständiges, anorganisch aufgebautes lackförmiges Anstrichmittel, das sich aus einem Bindemittel und Quarzmehl als Füllstoff zusammensetzt, das in dem Bindemittel homogen verteilt ist und dessen Anteil im Anstrichmittel zwischen 30 und 70 Gewichtsprozent liegtThe invention relates to a chemically stable, temperature-resistant, inorganically constructed Lacquer-like paint, which is composed of a binder and quartz powder as a filler, the is homogeneously distributed in the binder and its proportion in the paint is between 30 and 70 percent by weight lies

Die Aufgabe der Erfindung besteht darin, ein einfach darzustellendes Anstrichmittel der obengenannten Art zu schaffen, das bei hoher Temperaturbeständigkeit und hoher chemischer Beständigkeit nur geringen Wärmeausdehnungskoeffizienten sowie hohe Druckfestigkeit aufweist. Ferner soll das Anstrichmittel auch bei häufig auftretender Temperaturwechselbeanspruchung gut haften und keine mechanische oder chemische Bindung mit anderen Werkstoffen eingehen.The object of the invention is to provide a paint of the above type that is easy to produce to create that with high temperature resistance and high chemical resistance only low coefficient of thermal expansion as well as having high compressive strength. Furthermore, the paint should also be used frequently occurring thermal shock and no mechanical or chemical bond enter with other materials.

Zur Lösung dieser Aufgabe wird erfindungsgemäß vorgeschlagen, daß das Bindemittel eines gattungsgemäßen Anstrichmittels aus einer wäßrigen Chromsäurelösung mit 20 bis 30 Gewichtsprozent Chromsäure besteht, der 10 Gewichtsprozent phosphorige Säure oder deren Salze zugesetzt sind.To solve this problem, the invention proposes that the binder of a generic Paint from an aqueous chromic acid solution containing 20 to 30 percent by weight of chromic acid consists, the 10 weight percent phosphorous acid or its salts are added.

Hierbei wird ein Überschuß an Chromsäure verwendet Ein wesentlicher Vorteil der Erfindung wird darin gesehen, daß infolge der Verminderung der Reaktionspartner und ohne Hydroxydherstellung eine einfache Herstellung des Bindemittelansatzes möglich ist. Bei größeren Ansätzen muß die entstehende Reaktionswärme durch Kühlung abgeführt werden.An excess of chromic acid is used here. An essential advantage of the invention is that it is used seen that due to the reduction of the reactants and without hydroxide production a simple Production of the binder approach is possible. In the case of larger batches, the heat of reaction produced must can be removed by cooling.

Wird das erfindungsgemäße Anstrichmittel beispielsweise mittels einer Farbspritzpistole auf das Grundmaterial aufgetragen, entweicht vorerst ein geringer Wasseranteil durch Verdunsten. Das restliche Verdampfen des Wassers aus dem Anstrichmittel wird durch ein etwa halbstündiges Erwärmen auf 80 bis 90°C erreicht, wobei jede Blasenbildung vermieden wird. Nach dieser Wärmelagerung kann das etwa halbstündige Einbrennen bei 250 bis 350° C erfolgen.If the paint according to the invention is applied to the base material, for example, by means of a paint spray gun applied, initially a small amount of water escapes through evaporation. The rest of the evaporation the water from the paint is achieved by heating it for about half an hour to 80 to 90 ° C, avoiding any blistering. After this heat storage, it can be stoved for about half an hour take place at 250 to 350 ° C.

Da die so entstehende Schicht neben guter Korrosionsbeständigkeit, Temperaturbeständigkeit etwa 9000C einer guten Haftung auf metallischen und keramischen Grundmaterialien, einem geringen Wärmeausdehnungskoeffizienten auch eine sehr hohe Druckfestigkeit aufweist, findet das erfindungsgemäße Anstrichmittel beispielsweise als Trennmittel zum Auskleiden von Gießformen Anwendung. Da es hierbei wegen seiner annähernd unbegrenzten Lebensdauer beliebig oft verwendbar ist, braucht das Anstrichmittel nur einmal auf die Formfläche aufgetragen und eingebrannt zu werden.Since the resulting layer has good corrosion resistance, temperature resistance around 900 ° C., good adhesion to metallic and ceramic base materials, a low coefficient of thermal expansion and very high compressive strength, the paint according to the invention is used, for example, as a release agent for lining casting molds. Since it can be used any number of times due to its almost unlimited service life, the coating material only needs to be applied once to the mold surface and baked.

Claims (1)

Patentanspruch:Claim: Chemisch beständiges, temperaturbeständiges, anorganisch aufgebautes lackförmiges Anstrichmittel, das sich aus einem Bindemittel und Quarzmehl als Füllstoff zusammensetzt, das in dem Bindemittel homogen verteilt ist und dessen Anteil im Anstrichmittel zwischen 30 und 70 Gewichtsprozent liegt, dadurch gekennzeichnet, daß das Bindemittel aus einer wäßrigen Chromsäurelösung mit 20 bis 30 Gewichtsprozent Chromsäure besteht, der 10 Gewichtsprozent phosphorige Säure oder deren Salze zugesetzt sind.Chemically resistant, temperature-resistant, inorganically structured lacquer-like paint, which is composed of a binder and quartz powder as a filler, which is in the binder is homogeneously distributed and its proportion in the paint is between 30 and 70 percent by weight, characterized in that the binder consists of an aqueous chromic acid solution with 20 up to 30 percent by weight chromic acid, the 10 Percent by weight of phosphorous acid or its salts are added. 1515th
DE19712140208 1970-02-11 1971-08-11 Chemically resistant, temperature-resistant, inorganically built up varnish-like paint Expired DE2140208C3 (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
DE2006095A DE2006095C3 (en) 1970-02-11 1970-02-11 Use of a lacquer-like paint
DE19712140208 DE2140208C3 (en) 1971-08-11 Chemically resistant, temperature-resistant, inorganically built up varnish-like paint
FI2131/72A FI57606C (en) 1971-08-11 1972-07-31 CHEMICAL BUMPER TEMPERATURBEST BEND TRACKING BACK
GB3744872A GB1391620A (en) 1971-08-11 1972-08-10 Coatings
NO2850/72A NO138730C (en) 1971-08-11 1972-08-10 CHEMICAL AND HEAT RESISTANT, INORGANIC COATING LACQUER, ESPECIALLY FOR CAST MOLDS
SE7210453A SE390312B (en) 1971-08-11 1972-08-11 THERMO RESISTANT ORGANIC COATING CONTAINER CHROMIC ACID AND PHOSPHORIC ACID OR SALTS THEREOF
FR7229142A FR2148629B1 (en) 1971-08-11 1972-08-11
US00279764A US3857717A (en) 1971-08-11 1972-08-11 Chemical resistant, temperature resistant lacquer-like inorganic coating composition

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2006095A DE2006095C3 (en) 1970-02-11 1970-02-11 Use of a lacquer-like paint
DE19712140208 DE2140208C3 (en) 1971-08-11 Chemically resistant, temperature-resistant, inorganically built up varnish-like paint

Publications (3)

Publication Number Publication Date
DE2140208A1 DE2140208A1 (en) 1973-02-15
DE2140208B2 true DE2140208B2 (en) 1976-04-01
DE2140208C3 DE2140208C3 (en) 1976-11-18

Family

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Also Published As

Publication number Publication date
DE2006095B2 (en) 1978-09-14
DE2006095A1 (en) 1971-08-19
DE2140208A1 (en) 1973-02-15
DE2006095C3 (en) 1979-05-10

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
EGA New person/name/address of the applicant
8320 Willingness to grant licences declared (paragraph 23)
8339 Ceased/non-payment of the annual fee