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  • 1
    ISSN: 0449-2986
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Durch die Entwicklung von solchen neuen Materialien wie “Geopolymere” und neuen Verfahren wie “Sol-Gel” kam es in den letzten paar Jahren zu einem bedeutenden Fortschritt in der Technologie. Neue, mittels Geopolymerisationsreaktionen dargestellte Avantgarde-Materialien öffnen den Weg zu neuen Anwendungen, Verfahren und zur Umsetzung von Ideen, die in der anorganischen Chemie für selbstverständlich angenommen wurden. Zur Herstellung von in Struktur und Eigenschaften keramikähnlichen Stoffen sind keine Hochtemperaturverfahren mehr notwendig. Diese Materialien können wie organische Polymere bei Temperaturen unter 100°C polykondensieren. Diese neue Generation von Materialien hat — rein, mit Füllern oder faserverstärkt angewendet — ihren Anwendungsbereich auf allen Gebieten der Industrie schon gefunden: rein: zur Endlagerung von toxischen, chemischen und radioaktiven Abfallstoffen usw. mit Füllern: zur Herstellung von Spezialbetons und Formen zur Gestaltung von Thermoplasten usw. faserverstärkt: zur Herstellung von Formen und Werkzeugen für die Giesserei und in der Metallurgie der Aluminiumlegierungen usw. Diese Anwendungen können in der Automobil-, Luftfahrtindustrie, in der Nichteisenmetallurgie, im Baugewerbe, in der Kunststoffindustrie usw. angetroffen werden.
    Abstract: Резюме Представлены принци пы эманационного термического анализ а, основанного на измер ении инертного газа, выделяющегося из твердых тел. Предст авлены результаты компьютерного модел ирования кривых выделения ине ртного газа при нагревании пористых и дисперсных образцо в. С помощью эманацион ного термического анализа проведена ха рактеристика высоко-технологичны х керамических материалов и исходно го для них сырья, заключающаяся в определении реакци онной способности и с пекаемости керамических порошков, качественн ой проверке промежут очных и конечных продуктов получаемы х высоко-технологичн ых материалов/ферритов, окиси тория, окиси ура на, сверхпроводящей оксидной керамики и др/.
    Notes: Abstract Spectacular technological progress has been made in the last few years through the development of new materials such as ‘geopolymers’, and new techniques, such as ‘sol-gel’. New state-of-the-art materials designed with the help of geopolymerisation reactions are opening up new applications and procedures and transforming ideas that have been taken for granted in inorganic chemistry. High temperature techniques are no longer necessary to obtain materials which are ceramiclike in their structures and properties. These materials can polycondense just like organic polymers, at temperatures lower than 100 deg. C. This new generation of materials, whether used pure, with fillers or reinforced, is already finding applications in all fields of industry. Some examples: pure: for storing toxic chemical or radioactive waste, etc. filled: for the manufacture of special concretes, molds for molding thermoplastics, etc. reinforced: for the manufacture of molds, tooling, in aluminum alloy foundries and metallurgy, etc. These applications are to be found in the automobile and aerospace industries, non-ferrous foundries and metallurgy, civil engineering, plastics industries, etc.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Durch die Entwicklung neuer Materialien wie ‘Geopolymere’ und neuer Prozesse wie ‘Sol-Gel’ wurden in den letzten Jahren spektakulÄre Fortschritte auf technologischem Gebiet erzielt. Neue, mittels Geopolymerisationsreaktionen erzeugte Stoffe eröffnen neuartige Anwendungen und verÄndern Ansichten, die in der anorganischen Chemie seit langem als gesichert galten. Hochtemperaturtechniken sind nicht mehr notwendig, um Materialien herzustellen, die in ihren Strukturen und Eigenschaften der Keramik gleichen. Solche Substanzen können, Ähnlich wie organische Polymere, bei Temperaturen unterhalb 100
    Notes: Abstract Spectacular technological progress has been made in the last few years through the development of new materials such as ‘geopolymers’, and new techniques, such as ’sol-gel’. New state-of-the-art materials designed with the help of geopolymerization reactions are opening up new applications and procedures and transforming ideas that have been taken for granted in inorganic chemistry. High temperature techniques are no longer necessary to obtain materials which are ceramic-like in their structures and properties. These materials can polycondense just like organic polymers, at temperatures lower than 100
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Theoretical Biology 12 (1966), S. 1-6+IN2+7-11 
    ISSN: 0022-5193
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 69 (1996), S. 1646-1648 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: It is demonstrated that monolayers of organic molecules (long chain hydrocarbons) as thin as 1.9 nm, deposited by the self-assembly technique on silicon, form high performance electrically insulating barriers. Their properties are compared with those of silicon dioxide. Leakage current densities through the organic monolayers of the order of 10−8–10−7A/cm2 have been obtained. These values are 4–5 decades lower than those for silicon dioxide of equivalent thickness. Larger tunneling barriers for organic monolayers than for silicon dioxide explain these results. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
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  • 7
    Publication Date: 1960-01-01
    Print ISSN: 0028-1042
    Electronic ISSN: 1432-1904
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Published by Springer
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