Role of ﬁbre–ﬁbre and ﬁbre–matrix adhesion in stress transfer in composites made from resin-impregnated paper sheets
2009 (English)In: International Journal of Adhesion and Adhesives, ISSN 0143-7496, E-ISSN 1879-0127, Vol. 29, no 5, 551-557 p.Article in journal (Refereed) Published
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.
Place, publisher, year, edition, pages
2009. Vol. 29, no 5, 551-557 p.
Composites, Wood, Microscopy
Computer Vision and Robotics (Autonomous Systems)
Research subject Computerized Image Analysis
IdentifiersURN: urn:nbn:se:uu:diva-111263DOI: 10.1016/j.ijadhadh.2008.11.002ISI: 000265185300011OAI: oai:DiVA.org:uu-111263DiVA: diva2:280153