Dielectric characterization of thermoplastic natural rubber/strontium titanate composites at 10 Hz to 1 MHz

Publication Issue: 
Volume 29, Number 3&4, 2008
Page No: 
Date Received: 
Wednesday, December 26, 2007
Authors' Name: 
Jumiah Hassana
Deventharan a/l Rajarama
Mansor Hashima
Azizan Ahmadb
Zulkifly Abbasa
Authors' Affiliation and Address: 
aDepartment of Physics, Faculty of Science, Universiti Putra Malaysia, 43400 UPM Serdang, Selangor, Malaysia
bInstitute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600 Bangi, Selangor, Malaysia

Natural rubber which has the ability to stick to itself and to other materials makes it easy to fabricate into rubber products. There are a large number of engineering applications in almost every industrial sector. These include components like radiator hose, windscreen wipers, tyres, engine mounts, suspension mounts, etc. Thermo plastic natural rubber is used as a matrix in the preparation of the samples, with strontium titanate as the filler, is a combination of natural rubber and linear low density poly-ethylene. Generally, polymers have low dielectric constant. However, dielectric ceramics have high dielectric constant but require high processing temperatures. Strontium based ceramics have been widely used to fabricate some electronic components such as grain boundary layer capacitors, varistors and sensors. Demand is increasing for thinner capacitor material to as low as 10 microns [1]. Reports have been made on polymer-ceramic composite materials such as dielectric materials in capacitors because ceramics have high dielectric performance and polymers are low cost materials and easily processed [2]. One important application for these polymer-ceramic materials is for usage in microelectronics packaging [3].

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