Role of fibre-fibre and fibre-matrix adhesion in stress transfer in composites made from resin-impregnated paper sheets

Sammanfattning

Paper-reinforced plastics are gaining increased interest as packaging materials, where mechanical properties are of great importance. Strength and stress transfer in paper sheets are controlled by fibre-fibre bonds. In paper-reinforced plastics, where the sheet is impregnated with a polymer resin, other stress-transfer mechanisms may be more important. The influence of fibre-fibre bonds on the strength of paper-reinforced plastics was therefore investigated. Paper sheets with different degrees of fibre-fibre bonding were manufactured and used as reinforcement in a polymeric matrix. Image analysis tools were used to verify that the difference in the degree of fibre-fibre bonding had been preserved in the composite materials. Strength and stiffness of the composites were experimentally determined and showed no correlation to the degree of fibre-fibre bonding, in contrast to the behaviour of unimpregnated paper sheets. The degree of fibre-fibre bonding is therefore believed to have little importance in this type of material, where stress is mainly transferred through the fibre-matrix interface. (C) 2009 Elsevier Ltd. All rights reserved.

Nyckelord

Composites; Wood; Microscopy

Publicerad i

International Journal of Adhesion and Adhesives
2009, volym: 29, nummer: 5, sidor: 551-557
Utgivare: ELSEVIER SCI LTD

SLU författare

• Malmberg, Filip

  • Centre for Image Analysis, Sveriges lantbruksuniversitet
    

• Lindblad, Joakim

  • Centre for Image Analysis, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Annan kemiteknik

Publikationens identifierare

• DOI: https://doi.org/10.1016/j.ijadhadh.2008.11.002

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/50000