The Mechanical Properties And Morphology Study Of The Silica-Reinforced Polyethylene (PE) Composites
The objectives of this research are to study the relationship of morphology and mechanical properties of the silica-reinforced polypropylene composites and to find optimum ratio of silica to PE. In this research, polyethylene (PE) is used as the matrix of the composites, while the reinforcement i...
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UTeM
2008
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| நிகழà¯à®¨à®¿à®²à¯ˆ அணà¯à®•à®²à¯: | http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=fullDisplayRetriever.jsp&szMaterialNo=0000048711 http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=fullDisplayRetriever.jsp&szMaterialNo=0000048711 http://eprints.utem.edu.my/3795/1/The_Mechanical_Properties_And_Morphology_Study_Of..._-_24_pages.pdf http://eprints.utem.edu.my/3795/2/The_Mechanical_Properties_And_Morphology_Study_Of...._-_TA455.P58_.G67_2008.pdf |
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| தொகà¯à®ªà¯à®ªà¯: | The objectives of this research are to study the relationship of morphology and
mechanical properties of the silica-reinforced polypropylene composites and to find
optimum ratio of silica to PE. In this research, polyethylene (PE) is used as the matrix of
the composites, while the reinforcement is silica particle with size of 5.221um.
Polyethylene is used as matrix due to its lightweight, good mechanical performance,
economic in fabricating and accepted to many types of filler. As we know, silica is a type
of mineral fillers which is added to polymers in order to reduce cost and improve
stiffness. In the sample preparation, the silica particles are compounded with PE to
produce composites in the form of pellets. The mixing of matrix and filler is performed at
three different fillers loading which are 20%~ 30% and 40% of volume. Then, the
compounding was brought to the huL press machine to produce a plate specimen and
tested mechanically to investigate the strength and flexural properties. At the same time,
the morphology study of fracture surface for tensile test samples will be observed under
Scanning Electron Microscope (SEM). From the result, it shows that tensile modulus,
flexural strength and elongation to break for flexural were enhanced by addition of silica
in 20% and 30% volume to the PE. A strong fill er or matrix adhesion would lead to
enhance strength of particuJatc composites. Nevertheless, it did not show improvement in
the tensile strength of the composite. For the morphology of fracture surface, it was
indicated that the dispersion of the particles in the 20% was fairly good. Whereas the PE
with 40% silica particles are severely agglomerated in PE matrix: due to the particles are
not disperse well in the matrix. Tt can be concluded that the shape, particle size, aspect
ratio, volume fraction and specific surface area of the filler particles were affected the
mechanicaJ propertjes of the composite. |
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