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Visar resultat 1 - 5 av 6 avhandlingar som matchar ovanstående sökkriterier.

  1. 1. Improvement of the retention-fromation relationship using three-component retention aid systems

    Författare :Anna Svedberg; Lars Wågberg; Janne Laine; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dewatering; drag reduction; fibre flocculation; filler retention; fine paper; flow imaging; flow loop; formation aid; kraft pulp; magnetic resonance imaging; MRI; paper formation; pilot web former; pressure drop; retention aid; turbulence damping;

    Sammanfattning : .... LÄS MER

  3. 2. Valuation of retention/formation relationships using a laboratory piot-paper machine

    Författare :Anna Svedberg; Lars Wågberg; Mikael Lindström; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : The interdependency between filler retention and paper formation is well-known, where a high retention is accompanied by impaired formation. A challenge for today’s papermakers is to increase the competitiveness for uncoated and coated fine paper, by improving the formation at the same level of retention. LÄS MER

  4. 3. Carbon Fibres and Carbonaceous Fillers in Engineering Thermosets

    Författare :Björn Voigt; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; melamine-formaldehyde; carbon black; phenol-formaldehyde; shungite; mechanical and electrical properties; carbon fibres;

    Sammanfattning : In view of the excellent properties of carbon fibres (CF) and the growing demand for multi-functional materials e.g., electrically conductive composites, engineering thermosets with carbon fibres are highly attractive. Similarly, electrically conductive fillers are of great importance. LÄS MER

  5. 4. On the Internal Sizing Mechanisms of Paper with AKD and ASA Related to Surface Chemistry, Wettability and Friction

    Författare :Rauni Seppänen; Mark Rutland; John Roberts; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surface and colloid chemistry; Yt- och kolloidkemi;

    Sammanfattning : Paper and board are hydrophobized (sized) to control the spreading and absorption of waterbased inks and retard the absorption and edge penetration of liquid packaging by aqueous liquids. Alkenyl ketene dimers (AKD) and alkenyl succinic anhydride (ASA) are synthetic sizing agents that are generally used under neutral or slightly alkaline papermaking conditions. LÄS MER

  7. 5. Materials Design for Paper Electrodes : A Papermaking Perspective on Electrode Fabrication

    Författare :Patrik Isacsson; Isak Engquist; Magnus Berggren; Nadège Reverdy-Bruas; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Papermaking; Electrodes; Lignin; Nanocarbons; PEDOT:PSS;

    Sammanfattning : The electrification and digitalization of our society has propelled the demand for energy storage solutions. High-end technologies have been developed to satisfy the requirements of demanding applications, such as electromobility and portable consumer electronics, which also increasingly find markets for less demanding applications. LÄS MER