Assessment of alumina and muscovite as fillers for epoxy substrate material

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dc.contributor.authorAbdul Rashid, Erfan Suryani
dc.date.accessioned2014-10-21T04:40:34Z
dc.date.available2014-10-21T04:40:34Z
dc.date.issued2009
dc.descriptionMasteren_US
dc.description.abstractThe research reports the preparation and performance of particulate filled epoxy composites at various filler loading using casting method. Two types of fillers were used in this study; muscovite and alumina. Surface treatments were carried out to muscovite and alumina particles in order to improve the interfacial adhesion and dispersion in epoxy matrix. The treatments were characterized using Fourier Transmission Infra Red (FTIR), which indicate both particles have successfully treated. Mechanical properties were investigated in order to evaluate the effect of treatments and filler loading on the composites. It was found that the flexural strength and the flexural modulus increase over the range of filler loading investigated for both composites. In terms of flexural modulus, treated muscovite composite increase from 3GPa (neat epoxy) to 7.5GPa (40wt% treated muscovite) with targeted flexural modulus 15GPa. It was observed that muscovite composites with ion exchange treatment give better performance in terms of thermal properties as compared with untreated muscovite composites. In addition, the coefficient of thermal expansion (CTE) has successfully reduced from 69.4 ppm/°C (neat epoxy) to 32 ppm/°C (40wt% treated muscovite) with targetted CTE value of around 16-20ppm/°C. Apparently, the treated alumina exhibit high flexural modulus; 9GPa (50wt% treated alumina) and low CTE at as low as 22 ppm/°C compared with neat epoxy. The closer the CTE value of the substrate to the chips is preferable in order to minimize the internal stress and fatigue cracking.en_US
dc.identifier.urihttp://hdl.handle.net/123456789/145
dc.language.isoenen_US
dc.subjectMaterials and Mineral Resources Engineeringen_US
dc.subjectAluminaen_US
dc.subjectMuscoviteen_US
dc.subjectEpoxy substrateen_US
dc.titleAssessment of alumina and muscovite as fillers for epoxy substrate materialen_US
dc.typeThesisen_US
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