Sökning: "hygroexpansion"
Visar resultat 6 - 10 av 17 avhandlingar innehållade ordet hygroexpansion.
6. Extended impregnation kraft cooking of softwood : Effects on reject, yield, pulping uniformity, and physical properties
Sammanfattning : Converting wood into paper is a complex process involving many different stages, one of which is pulping. Pulping involves liberating the wood fibres from each other, which can be done either chemically or mechanically. LÄS MER
7. Modelling of Stiffness and Hygroexpansion of Wood Fibre Composites
Sammanfattning : Paper 1The eld of research involving the analytical modelling of the stiff ness and hygroexpansion of composite material is reviewed. This paper can be regarded as an introduction to the area of the mechanics of composite materials in general and to wood fibre composites in particular. LÄS MER
8. Hygroelastic properties of wood fibres for composite applications
Sammanfattning : Wood pulp fibres are gaining increased use for other applications than paper and board. Wood fibres can also be used as reinforcement in plastics for load carrying purposes. LÄS MER
9. Hygro- and hydroexpansion of paper : Influence of fibre-joint formation and fibre sorptivity
Sammanfattning : Paper is a versatile, cheap and environment-friendly material. Nevertheless, there are several factors limiting its usefulness, and one of the major issues is that cellulosic and ligno-cellulosic fibres spontaneously sorb water. At the same time, the water uptake changes the dimensions of the paper. LÄS MER
10. Dimensional Stability of Paper : Influence of Fibre-Fibre Joints and Fibre Wall Oxidation
Sammanfattning : Papper är ett mycket mångsidigt material. Trots detta finns det ett flertal egenskaper som begränsar papperets användbarhet. Ett av de större problemen med cellulosa- och lignocellulosafibrer är att de sänker sin fria energi genom att sorbera vatten, och denna sorption förändrar papperets dimensioner. LÄS MER