UNIV. NEWS. NORTH-CAUCAS. REG. TECHNICAL SCIENCES SERIES. 2022; 4: 111-115
http://dx.doi.org/10.17213/1560-3644-2022-4-111-115
EXPANSION AND COALESCENCE OF SILICATE MELTS UNDER THE HYDRATE MECHANISM OF GAS FORMATION
Zhikina Liudmila A. – Graduate Student, Department «Environmental Protection», Perm National Research Polytechnic University, Perm, Russia, lusyzh@gmail.com
Ketov Alexander A. – Doctor of Technical Science, Professor, Department «Environmental Protection», Perm National Research Polytechnic University, Perm, Russia, alexander_ketov@mail.ru
Krasnovskikh Marina P. – Candidate of Technical Sciences, Senior Lecturer, Department «Inorganic Chemistry, Chemical Technology and Technosphere Safety», Perm State National Research University Perm, Russia, krasnovskih@yandex.ru
Minkin Aleхandеr M. – Candidate of Technical Sciences, Senior Lecturer, Department «Physical Chemistry», Perm State National Research University Perm, Russia, minkin.90@gmail.com
Yatsenko Elena A. – Doctor of Technical Sciences, Professor, Head of the Department «General Chemistry and Technology of Silicates», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia, e_yatsenko@mail.ru
Novikov Yury V. – Master Student, engineer of the laboratory «Fuel Energy Waste Recycling», Platov South-Russian State Polytechnic University (NPI), Novocherkassk, Russia, novikovtnv@yandex.ru
Abstract
Quartz glass is increasingly used for the manufacture of fiber-optic sensors for various purposes, the operating temperatures of which reach values above 500 °С. In such cases, the use of conventional methods for fixing optical fibers with organic adhesives is unacceptable. Whereas some types of fiber optic connector tips for such sensors provide for the creation of a gas-tight seal of the annular channel between the quartz parts. To solve this problem, it is necessary to create silicate compositions that expand during heat treatment. The conditions of gas formation and behavior of silicate melts of various origins under thermoplastic conditions are considered. Scanning electron microscopy was used to study the internal structure of the obtained silicate compositions. The processes of expansion and coalescence of silicate melts under the hydrate mechanism of gas formation are described. A technical solution for the creation of gas-tight tips of fiber-optic connectors is proposed.
Keywords: gas formation, silicate melt, foam coalescence, fiber optic connector
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