Publication: Effect of ion exchange treatment on the properties of muscovite filled polymer composites
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Date
2009-05-01
Authors
Tan, Chin Chin
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Abstract
The research reports the preparation and performance of particulate filled epoxy composites using casting method. A type of filler was used in this study which is muscovite. Surface treatment was carried out to muscovite particles in order to improve the interfacial and dispersion in epoxy matrix. The treated muscovite was characterized using X-Ray Diffraction (XRD) and Fourier Transmission Infra Red (FTIR), which indicate the particles have successfully treated. Mechanical properties were investigated in order to evaluate the effect of ion exchange treatment and filler loading on composites. It was found that the tensile strength and the tensile modulus increase over filler loading are investigated for untreated and treated muscovite composites. In term of tensile modulus, treated muscovite composite increase from 1996.5 ± 33 MPa (10wt% untreated muscovite) to 3188.5 ± 142.5 MPa (10wt% treated muscovite). It was observed that muscovite composites with ion exchange treatment give better performance in terms of thermal properties as compared with untreated muscovite composites. Furthermore, the coefficient of thermal expansion (CTE) has successfully reduced from 74.4 ppm/°C (neat epoxy) to 57.9 ppm/°C (10wt% treated muscovite) with targeted CTE value of around 20 -30 ppm/°C. The closer the CTE value of the substrate to chips is preferable in order to minimize the internal stress and fatigue cracking.