DE962392C - Method for producing emails - Google Patents

Method for producing emails

Info

Publication number
DE962392C
DE962392C DEE8340A DEE0008340A DE962392C DE 962392 C DE962392 C DE 962392C DE E8340 A DEE8340 A DE E8340A DE E0008340 A DEE0008340 A DE E0008340A DE 962392 C DE962392 C DE 962392C
Authority
DE
Germany
Prior art keywords
silica
producing
emails
silica gel
enamels
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
Application number
DEE8340A
Other languages
German (de)
Inventor
Dipl-Ing Walter Eckhoff
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.)
WALTER ECKHOFF DIPL ING
Original Assignee
WALTER ECKHOFF DIPL ING
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
Application filed by WALTER ECKHOFF DIPL ING filed Critical WALTER ECKHOFF DIPL ING
Priority to DEE8340A priority Critical patent/DE962392C/en
Application granted granted Critical
Publication of DE962392C publication Critical patent/DE962392C/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C4/00—Compositions for glass with special properties

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Silicon Compounds (AREA)

Description

Verfahren zum Herstellen von Emails Die Erfindung betrifft ein Verfahren zum Herstellen von Emails und besteht darin, den Gehalt an Kieselsäure im Schmelz- oder Mühlenversatz ganz oder teilweise durch kolloidale Kieselsäure zu ersetzen.Method for producing emails The invention relates to a method for the production of enamels and consists in determining the content of silica in the enamel or to replace the mill offset in whole or in part with colloidal silica.

Es ist bekannt, daß in der Glastechnik beim Erschmelzen von Glasflüssen die Bestandteile des Rohstoffgemenges, darunter auch Kieselsäure, zusammen als kolloidale Mischungen gefällt oder aus Lösungen verdampft werden, mit dem Ziel, Schmelzpunkt, Schmelzdauer herabzusetzen, ultraviolett durchlässiges Glas zu erhalten u. ä. Ferner ist es in der Emailtechnik bekannt, Substanzen bis herunter zu kolloidalen Größen zu mahlen, unter welchen sich auch Kieselsäure befinden kann, z. B. zusammen mit anderen Rohstoffen als sogenannter Dispersionsbeschleuniger im Mühlenzusatz. Es wurde nun gefunden, daß durch vollkommenen oder teilweisen Ersatz der Kieselsäure in Schmelz- oder Mühlenversatz durch kolloidal gefällte Kieselsäure in Form von Kieselsäuresol, Kieselsäuregel und/oder Silicagel wesentliche Fortschritte bei der Herstellung von Emails erzielt werden, die in einer ganz anderen Richtung wirksam werden wie die bekannten Anwendungen. Zunächst werden durch das äußerst günstige Oberflächenverhältnis der kolloidal gefällten Kieselsäure zu ihrem Volumen Grenzflächenreaktionen und Oberflächenspannungen ausgelöst, welche die entstehenden Gase zunächst absorbieren, um sie erst bei hohen Temperaturen wieder abzugeben. Weiter nimmt das Kieselsäuregel vermöge seiner Kapillarwirkung im Feinstbereich die Feuchtigkeitsgehalte der einzelnen Substanzen auf und fördert damit wesentlich die Homogenität der so he.gestellten Gemische. Ferner besteht ein wesentlicher Vorteil der kolloidal gefällten Kieselsäure darin, daß die Haft- und Griffestigkeit bei Grundemails und bei Emails, die ohne Grundemail aufgetragen werden, erheblich erhöht werden, so daß auf den Zusatz der üblichen Haftoxyde teilweise oder ganz verzichtet werden kann. Relativ geringe Zusätze zur Mühle bewirken bereits ein »Stehen« des Schlickers, weshalb auch die bisher verwendeten Schwebemittel, insbesondere Ton, teilweise oder ganz fortfallen können, was einen erheblichen Vorteil bedeutet. Schließlich wird der Glanz des erschmolzenen Emails ungewöhnlich groß, weil das aufgetragene Email williger, d. h. rascher und glatter auf der Unterlage aufbrennt, als ein solches, das nur mit Quarzmehl oder einer sonstigen Kieselsäureverbindung hergestellt ist.It is known that in glass technology when melting glass fluxes the constituents of the raw material mix, including silica, together as colloidal Mixtures are precipitated or evaporated from solutions with the aim of reaching the melting point, Reduce melting time, obtain ultraviolet-permeable glass, and the like it is known in enamel technology to transfer substances down to colloidal sizes to grind, among which there may also be silica, e.g. B. together with other raw materials as a so-called dispersion accelerator in the mill additive. It it has now been found that through complete or partial replacement of the silica in melt or mill offset by colloidally precipitated silica in the form of Silica sol, silica gel and / or silica gel have made significant advances Making enamels can be achieved that are effective in an entirely different direction become like the known applications. First of all, by the extremely cheap Surface ratio of the colloidally precipitated silica to its volume, interfacial reactions and surface tensions are triggered, which initially absorb the resulting gases, only to be released again at high temperatures. Next takes the silica gel by virtue of its capillary action in the finest range, the moisture content of the individual Substances and thus promotes significantly the homogeneity of the mixtures presented in this way. There is also a major advantage of colloidal precipitated silica in it that the adhesion and grip strength with base enamels and in the case of enamels that are applied without a base enamel, are significantly increased, see above that the addition of the usual adhesive oxides can be partially or completely dispensed with can. Relatively small additions to the mill already cause the slip to "stand", which is why the suspension means used so far, in particular clay, partially or can be omitted entirely, which is a considerable advantage. Finally will the gloss of the melted enamel is unusually great because of the enamel applied more willing, d. H. burns faster and smoother on the surface than one, that is only made with quartz powder or another silica compound.

Claims (1)

PATENTANSPRUCH:. Verfahren zum Herstellen von Emails, dadurch gekennzeichnet, daß der Gehalt an Kieselsäure dem Schmelz- oder Mühlenversatz ganz oder teilweise in Form von kolloidaler Kieselsäure (Kieselsäuresol, Silicagel, Kieselsäuregel) zugesetzt wird. In Betracht gezogene Druckschriften: Deutsche Patentschriften Nr. 604 721, 693 782; >>Glastechnische Berichte,, Bd.7, 1929/3o, S.455 bis 461.PATENT CLAIM :. Process for producing enamels, characterized in that the silica content is wholly or partially added to the melt or mill batch in the form of colloidal silica (silica sol, silica gel, silica gel). Considered publications: German Patent Specifications No. 604 721, 693 782; >> Glass technical reports, Vol.7, 1929/3o, pp.455 to 461.
DEE8340A 1953-12-29 1953-12-29 Method for producing emails Expired DE962392C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEE8340A DE962392C (en) 1953-12-29 1953-12-29 Method for producing emails

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE8340A DE962392C (en) 1953-12-29 1953-12-29 Method for producing emails

Publications (1)

Publication Number Publication Date
DE962392C true DE962392C (en) 1957-04-18

Family

ID=7067378

Family Applications (1)

Application Number Title Priority Date Filing Date
DEE8340A Expired DE962392C (en) 1953-12-29 1953-12-29 Method for producing emails

Country Status (1)

Country Link
DE (1) DE962392C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093165B (en) * 1959-04-09 1960-11-17 Walter Eckhoff Dipl Ing Process for the production of enamels

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE604721C (en) * 1933-02-28 1934-10-26 Patra Patent Treuhand Device for the production of pure raw materials, especially pure silica, for glass production
DE693782C (en) * 1937-10-02 1940-07-18 Elek Zitaets Akt Ges Process for producing a raw material mixture suitable for melting glass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE604721C (en) * 1933-02-28 1934-10-26 Patra Patent Treuhand Device for the production of pure raw materials, especially pure silica, for glass production
DE693782C (en) * 1937-10-02 1940-07-18 Elek Zitaets Akt Ges Process for producing a raw material mixture suitable for melting glass

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1093165B (en) * 1959-04-09 1960-11-17 Walter Eckhoff Dipl Ing Process for the production of enamels

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