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Study and modification of a vinylester resin for nautical applications
2001 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this work was studied a new vinylester resin (XZ 92485 of Dow Derakane), in view of nautical applications. The goal of the work was to improve the fracture properties of the resin, fracture toughness being a critical point in bow design. First were studied the kinetics of the reaction of the neat resin, the influence of the time of cure at 50C on the mechanical properties and a kinetic model, based on Kamal´s model was applied. The resin was then modified using PMMA at different weight fraction. An investigation of the influence of the PMMA content on the cure of the resin was made, as well as the influence on the mechanical properties in three point bending and in Single Edge Notched Bending fracture tests. It appeared that a PMMA content of 5° wt % presented the best enhance in fracture properties with no big impact on modulus and strength. Finally, composite laminates consisting of the modified vinylester and carbon fibers (woven 0/90 fabrics) were built. It was shown that there is no influence of the PMMA content on the flexural properties, nor on the impact properties. Delamination tests are to be done.

Place, publisher, year, edition, pages
Keyword [en]
Technology, Vinylester, kinetics, kinetic model, PMMA
Keyword [sv]
URN: urn:nbn:se:ltu:diva-50520ISRN: LTU-EX--01/276--SELocal ID: 7c407734-dac4-4c58-ad3c-aed0c189f9a6OAI: diva2:1023879
Subject / course
Student thesis, at least 30 credits
Educational program
Materials Engineering, master's level
Validerat; 20101217 (root)Available from: 2016-10-04 Created: 2016-10-04Bibliographically approved

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