The Effects Of Natural Weathering Exposure On
The Properties Of Pultruded Natural Fibre
Reinforced Unsaturated Polyester Composites
Author(s)
M. H. Affzan, H. M. Akil, Z. A. M. Ishak & A. A. Bakar
Abstract
Due to the demand for green technology, the development of fibre reinforced
composites has built-up an interest in finding out new and reliable composites.
The natural fibre reinforced composites produced by the pultrusion technique
may eventually replace the conventional fibre composite production technique
used today. In considering outdoor application, experiments have been
performed to study the effects of weathering exposure on pultruded natural fibre
reinforced composites. Kenaf fibre reinforced composites (KFRC) were
produced using the pultrusion technique at 70% fibre loading. The composites
were then subjected to natural aging, which involved exposing specimens to an
outdoor natural environment for a period of time. After a few weeks, the
specimen showed some degradation and discolouring. Subsequently,
compression and flexural tests were carried out with the aim of determining the
mechanical properties after exposure. The decrease in the value of these
properties was verified and discussed. The repeated process of sun-heating and
the invasion of moisture from natural atmosphere such as rain and dew everyday
had led to debonding and weakening in the fibre-matrix interfaces of the
composite.
Keywords: fibres, polymer-matrix composites (PMCs), weathering exposure,
pultrusion.
Keywords
fibres, polymer-matrix composites (PMCs), weathering exposure,
pultrusion
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