Sökning: "fiber boards"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden fiber boards.

  1. 1. High-Performance Composites from Modified Wood Fiber

    Författare :Mats Westin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Kraft lignin; fiberboard; lignocellulosic fiber; durability; wood fiber; mechanical properties; dimensional stability; decay resistance; acetylation; composite;

    Sammanfattning : The objective of this work was to produce and evaluate high-performance wood fiber composites. High-performance was defined as: high dimensional stability and a high durability, including resistance to wood-decaying organisms (fungi, bacteria, and insects). LÄS MER

  3. 2. The mechanisms of edge wicking in retortable paperboard

    Författare :Helena Tufvesson; Lars Wågberg; Agne Sewerin; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Cellulose and paper engineering; Cellulosa- och pappersteknik;

    Sammanfattning : This thesis reports on an investigation of the mechanisms of edge wicking in retortable paperboard. Retortable board is used for packaging preserved food, a process which requires that the package and its contents be sterilised by exposure to high temperature steam for up to three hours. LÄS MER

  4. 3. Thermal decomposition of biomass and construction materials - an experimental study

    Författare :Jenny Svenson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Pyrolysis; biomass; molecular beammass spectrometer; birch; PMMA; fiber boards;

    Sammanfattning : .... LÄS MER

  5. 4. Fluid flow in wood fiber network

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

    Sammanfattning : Cellulose material is processed to pulp suspensions and MDF boards in order to produce products such as papers, magazines, laminate floors or door skins. A critical stage of these processes is when the cellulose fiber networks are compressed to specific densities and when most of the fluid originally positioned between and inside the fibers is forced to leave the network. LÄS MER

  7. 5. Model studies of cellulose fibers and films and their relation to paper strength

    Författare :Susanna Fält; KTH; []
    Nyckelord :absorption; carboxymethyl cellulose; cellulose fibers; dissolving pulps;

    Sammanfattning : The objectives of this work were (i) to develop a new methodfor the preparation of thin cellulose model films, (ii) to usethese model films for swelling measurements and (iii) to relatethe swelling of fibers and films to the dry strength ofpaper.In the new film preparation method, NMMO(N-methylmorpholine-N-oxide) was used to dissolve cellulose andDMSO (dimethyl sulfoxide) was added to control the viscosity ofthe cellulose solution. LÄS MER