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1	Mineral-Based Coating of Plasma-Treated Carbon Fibre Rovings for Carbon Concrete Composites with Enhanced Mechanical Performance Schneider, Kai, Lieboldt, Matthias, Liebscher, Marco, Fröhlich, Maik, Hempel, Simone, Butler, Marko, Schröfl, Christof, Mechtcherine, Viktor 27 July 2017 (has links) (PDF) Surfaces of carbon fibre roving were modified by means of a low temperature plasma treatment to improve their bonding with mineral fines; the latter serving as an inorganic fibre coating for the improved mechanical performance of carbon reinforcement in concrete matrices. Variation of the plasma conditions, such as gas composition and treatment time, was accomplished to establish polar groups on the carbon fibres prior to contact with the suspension of mineral particles in water. Subsequently, the rovings were implemented in a fine concrete matrix and their pull-out performance was assessed. Every plasma treatment resulted in increased pull-out forces in comparison to the reference samples without plasma treatment, indicating a better bonding between the mineral coating material and the carbon fibres. Significant differences were found, depending on gas composition and treatment time. Microscopic investigations showed that the samples with the highest pull-out force exhibited carbon fibre surfaces with the largest areas of hydration products grown on them. Additionally, the coating material ingresses into the multifilament roving in these specimens, leading to better force transfer between individual carbon filaments and between the entire roving and surrounding matrix, thus explaining the superior mechanical performance of the specimens containing appropriately plasma-treated carbon roving. Kohlefaser Plasmabehandlung Beton Zwischenphase Mineralbeschichtung Technische Universität Dresden Publikationsfonds carbon fibre plasma treatment concrete interphase mineral coating Technische Universität Dresden Publishing Funds ddc:600 rvk:ZG 1100
2	Mineral-Based Coating of Plasma-Treated Carbon Fibre Rovings for Carbon Concrete Composites with Enhanced Mechanical Performance Schneider, Kai, Lieboldt, Matthias, Liebscher, Marco, Fröhlich, Maik, Hempel, Simone, Butler, Marko, Schröfl, Christof, Mechtcherine, Viktor 27 July 2017 (has links) Surfaces of carbon fibre roving were modified by means of a low temperature plasma treatment to improve their bonding with mineral fines; the latter serving as an inorganic fibre coating for the improved mechanical performance of carbon reinforcement in concrete matrices. Variation of the plasma conditions, such as gas composition and treatment time, was accomplished to establish polar groups on the carbon fibres prior to contact with the suspension of mineral particles in water. Subsequently, the rovings were implemented in a fine concrete matrix and their pull-out performance was assessed. Every plasma treatment resulted in increased pull-out forces in comparison to the reference samples without plasma treatment, indicating a better bonding between the mineral coating material and the carbon fibres. Significant differences were found, depending on gas composition and treatment time. Microscopic investigations showed that the samples with the highest pull-out force exhibited carbon fibre surfaces with the largest areas of hydration products grown on them. Additionally, the coating material ingresses into the multifilament roving in these specimens, leading to better force transfer between individual carbon filaments and between the entire roving and surrounding matrix, thus explaining the superior mechanical performance of the specimens containing appropriately plasma-treated carbon roving. info:eu-repo/classification/ddc/600 ddc:600
3	Vergleich dielektrisch behinderter Entladungen bezüglich der physikalischen Eigenschaften und der Wirkung auf Holz und Holzwerkstoffe / Comparison of dielectric barrier discharges regarding their physical properties and the influence on wood and wooden materials Peters, Frauke 22 October 2018 (has links) No description available. 570 Plasma Dielektrisch behinderte Entladung reduzierte elektrische Feldstärke Plasmabehandlung von Holz Oberflächenenergie Rotationstemperatur Vibrationstemperatur WPC Hochdichte Faserplatte HDF Ahorn pH Wert Nitratkonzentration Salpetersäure Pufferkapazität Gastemperatur Elektronentemperatur elektronische Temperatur dielectric barrier discharge plasma reduced electrical field strength plasma treatment of wood surface free energy rotational temperature vibrational temperature electron temperature electronical temperature maple wood plastic composite high density fibreboard remote plasma RP coplanar surface barrier discharge CSBD direct dielectric barrier discharge DDBD gas temperature pH nitrate concentration buffer capacity nitric acide Forstwirtschaft (PPN621305413)

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