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Examination of conversion degree of composite insulating materials
2007 Annual Report - Conference on Electrical Insulation and Dielectric Phenomena, 2007Composite insulating materials have their important place in high-voltage insulating technology. The quality and high reliability of electrical devices is much affected by the curing level of these materials. Curing level is quantified by so-called degree of conversion and there are several possibilities how to determine this degree in practice ...
V. Mentlik, R. Polansky
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Polymerization kinetics of oligoesteracrylates at high degrees of conversion
Polymer Science U.S.S.R., 1967IF [1, 2] IT was reported tha t the polymerization kinetics of oligoesteracrylates t (OEA) is a diffusion-controlled process even at low degrees of conversion (G< 1%). At these G the influence of the physical properties (viscosity) of the reaction system on the apparent reactivity of OEA consists mainly in the recombination of polymer radicals, the ...
G.V. Korolev +5 more
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Degree of Conversion of Dehydroxylation in a Large Electroceramic Body
International Journal of Thermophysics, 2010The initial composition (36 mass% kaolin, 30 mass% alumina, 22 mass% feldspar, 12 mass% clay) and density of a body containing kaolinite is substantially altered during dehydroxylation which starts at a temperature of ~420 °C. Values of the degree of the dehydroxylation conversion of kaolinite into metakaolinite were experimentally obtained from a ...
Ján Ondruška +2 more
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On the use of the degree of conversion in the rate equations. II
Thermochimica Acta, 1982D. Fǎtu, E. Segal
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Reducing the degrees of freedom in chemistry classroom conversations
Chem. Educ. Res. Pract., 2012Five high-school chemistry teachers were asked to enact a lesson in which they posed a problem for which students were likely to generate solutions based on reasoning that was not aligned with accepted principles of chemistry. Four teachers selected a problem related to the stoichiometry of a reaction; the fifth chose a problem associated with periodic
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Hardness and degree of conversion of posterior packable composites.
Operative dentistry, 2005Knoop microhardness and the degree of conversion of three packable composites (SureFil, Alert and Solitaire), a microfil composite (Heliomolar), a microhybrid composite (Herculite) and an indirect laboratory-processed composite (Belleglass) were evaluated as a function of distance from the irradiated surface.
Lisa A, Knobloch +3 more
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Degree of conversion of pulsed laser cured composites
1996Clinical performance of visible-light curing composites is greatly influenced by the quality of photopolymerization. Some drawbacks of currently used photopolymerizhation units necessitate the search for new light sources. In this study, comparison was made between the degree of conversion of two hybrid composites (Tetric, Vivadent, Schaan ...
Meniga, Andrej +4 more
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Effect of ceramic on degree of conversion of cements
Dental Materials, 2019Q.N. Sonza +3 more
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