Sökning: "Paper-making"

Visar resultat 11 - 15 av 26 avhandlingar innehållade ordet Paper-making.

  1. 11. Wood-based Materials for Lithium-ion Batteries

    Författare :Lu Huiran; Göran Lindbergh; Ann Cornell; Claudio Gerbaldi; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; binder; lignin; TEMPO-oxidized cellulose nanofibrils; flexible paper electrodes; lightweight; eco-friendly; Li-ion batteries; Chemical Engineering; Kemiteknik;

    Sammanfattning : Lithium-ion batteries (LIB) have become very important recently as power sources for portable electronics and electric vehicles. Today non-renewable petroleum-based polymers are used as binders in state-of-the-art LIB. Therefore, it is essential to investigate alternative binders, which are environmentally friendly and inexpensive. LÄS MER

  3. 12. Static and Dynamic Modelling of the Drying Section of a Paper Machine

    Författare :Magnus Karlsson; Avdelningen för kemiteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Pappers- och massateknik; Modelling; Wood; Paper; Multi-Cylinder; Simulation; Control; Steam; Air; Dew Point; Moisture Gradients; pulp and paper technology; Pressure Gradients;

    Sammanfattning : The paper making process involves chopping of wood, cooking and forming, followed by dewatering in a vacuum section, press section and drying section. Several models for the most important parts of the paper machine drying section are presented in this thesis to describe phenomena at steady state and during state transitions. LÄS MER

  4. 13. Nonlinear Elasticity of Fiber Masses

    Författare :Mårten Alkhagen; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The mechanical properties of fiber masses are important in many fields of engineering such as upholstery, paper making, and composite manufacturing, and a fair amount of work has gone into analyzing these properties. However, previous theories have been limited to simple deformations and a restrictive choice of deformation mechanism. LÄS MER

  5. 14. Pappersarbete : Formandet av och föreställningar om kontorspapper som medium

    Författare :Charlie Järpvall; Mediehistoria; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; HUMANIORA; HUMANITIES; HUMANIORA; HUMANITIES; media history; information history; standardization; information systems; office work; paperwork; paper; typewriting; forms; mediehistoria; informationshistoria; standardisering; informationssystem; kontorsarbete; papper; maskinskrivning; blanketter; mediehistoria;

    Sammanfattning : This thesis explores office paper as a medium between 1920 and 1960 in Sweden. During this period, paper was muchdebated due to the number of standards that were implemented. These standardstransformed paper, making it a modern medium in many different ways. LÄS MER

  7. 15. Parallel computing of fluid flow through porous media

    Författare :Gunnar Hellström; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Strömningslära; Fluid Mechanics;

    Sammanfattning : Fluid flow through porous media takes place in a variety of technical areas including ground water flow, flow through embankment dams, paper making, composites manufacturing, filtering, drying and sintering of iron ore pellets. When modelling these kinds of flows it is common practice to use averaging techniques rather than computing the detailed flow field in every single pore. LÄS MER