Search for dissertations about: "hot-pressing"

Showing result 1 - 5 of 16 swedish dissertations containing the word hot-pressing.

2. 1. High strength paper from high yield pulps by means of hot-pressing

   Author : Tove Joelsson; Per Engstrand; Gunilla Pettersson; Anna Svedberg; Samuel Schabel; Mittuniversitetet; []
   Keywords : high yield pulp; hot-pressing; lignin; paper properties; wet strength;

   Abstract : AbstractHigh Yield Pulp (HYP), i.e. TMP, SGW or CTMP, is normally used in printing papers (News, SC and LWC) or in a middle layer on cardboard i.e. READ MORE

4. 2. The influence of Pulp Type and Hot-pressing Conditions on Paper Strength Development

   Author : Tove Joelsson; Per Engstrand; Gunilla Pettersson; Anna Svedberg; Tom Lindström; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Hot pressing; lignin; HYP; high strength; wet strength; softening temperature; kraft pulp; lignocellulose;

   Abstract : The hot-pressing technology has proven to have the potential for manufacturing of strong, wet stable materials based on eco-friendly renewable and recyclable lignocellulose. The purpose of this work was to study how the pulp characteristics and the hot-pressing conditions affect the dry and wet strength properties of paper. READ MORE

5. 3. On Heat and Paper : From Hot Pressing to Impulse Technology

   Author : Marco Francesco Carlo Lucisano; KTH; []
   Keywords : Paper; Impulse Drying; Heat Transfer; Phase Change; Heat-Pipe Effect; Delamination; Flashing;

   Abstract : Impulse technology is a process in which water is removedfrom a wet paper web by the combined action of mechanicalpressure and intense heat. This results in increased dewateringrates, increased smoothness on the roll side of the sheet, andincreased density. READ MORE

6. 4. Manufacture of straw MDF and fibreboards

   Author : Sören Halvarsson; Håkan Edlund; Magnus Norgren; Thomas Amidon; Mittuniversitetet; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Rice; Wheat; Straw; MDF; HDF; UF; MUF; MDI; Non-resin; binderless MDF; Ash; Silicon; SEM; Hot-pressing; MOR; MOE; IB; Thickness swelling; MDF properties; fibre swelling; WRV; Refining; Defibration.; NATURAL SCIENCES; NATURVETENSKAP; Chemical engineering; Kemiteknik; Chemical process and manufacturing engineering; Kemisk process- och produktionsteknik;

   Abstract : The purpose of this thesis was to develop an economical, sustainable, and environmentally friendly straw Medium Density Fibreboard (MDF) process, capable of full-scale manufacturing and to produce MDF of requested quality. The investigated straw was based on wheat (Triticum aestivum L.) and rice (Oryzae sativa L.). READ MORE

7. 5. Continuous Fibre Reinforced Oxide/Oxide Composites

   Author : Magnus Holmquist; Chalmers tekniska högskola; []
   Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; polycrystalline oxide fibre; zirconia; single crystal oxide fibre; hot isostatic pressing; hot pressing; alumina; mullite; sapphire; tape casting; interface; VibroIntrusion; interphase; continuous fibre reinforced ceramic composite; mechanical properties; oxide fibre; ceramic matrix composite;

   Abstract : The appealing properties of ceramics include retention of strength and hardness at high temperatures, chemical inertness and low density. However, monolithic ceramics fail in a brittle, unpredictable manner making them unsuitable for many applications where reliability is a key requirement. READ MORE