Browsing Yeoh, Cheow Keat, Assoc. Prof. Ir. Dr. by Author "yck5@yahoo.com"
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Effect of acetic acid as catalyst on the properties of epoxy foam
W. N. F, Wan Hamad; Teh, Pei Leng, Dr.; Yeoh, Cheow Keat, Dr. (Taylor and Francis Group, LLC, 2013)In this study, the effect of acetic acid used as catalyst in promoting the decomposition rate of blowing agent (sodium bicarbonate) in epoxy foam was done. Hard epoxy foam was produced using mechanical mixing technique. ... -
The effect of particle size on the electrical and thermal properties of recycled copper filled polyester composites
Pargi, M. N. F.; Chong, Y. T.; Teh, Pei Leng; Yeoh, Cheow Keat, Dr. (Inderscience Enterprises Ltd., 2013)Due to high product value and some related environmental issues, recycled copper was used as filler in polyester system. The waste copper was collected from the milling machine. The effects of particle size distribution ... -
Effects of Cu and Ti excess on the dielectric properties of CaCu3Ti4O12 prepared using a wet chemical method
Yeoh, Cheow Keat, Dr.; Mohd Fadhli, Ahmad; Zainal Arifin, Ahmad (Elsevier Ltd., 2007) -
Fabrication of BaTiO3 thin films through ink-jet printing of TiO2 sol and soluble Ba salts
Yeoh, Cheow Keat, Dr.; Srimala Sreekantan; Sabar Derita Hutagalung; Zainal Arifin, Ahmad (Elsevier Ltd., 2007)BaTiO3 thin films were prepared by ink-jet printing aqueous solutions of TiO2 sol and soluble Ba salts. Higher pH values (pH > 13) as well as higher than stoichiometric Ba (Ba:Ti = 1.1:1) salt additions were required to ... -
The properties of epoxy resin coated silica fillers composites
Teh, Pei Leng, Dr.; Mariatti, Mustapha; Hazizan, Md Akil; Yeoh, Cheow Keat, Dr.; Seetharamu, Kankanhally N.; Amir Nur Rashid, Wagiman; Beh, Keh Shin (Elsevier Ltd., 2007-05)Epoxy resin coated silica fillers composites with high percentage of filler loading, such as 80 to 95 vol.% are able to be produced by a mechanical mixing technique. The advantages of high filler loading of theses materials ... -
The properties of recycled copper filled epoxy/unsaturated polyester composites
Phua, J. L.; The, Peter L.; Supri, Abdul Ghani; Yeoh, Cheow Keat, Dr.; Ishak, S. N. (Trans Tech Publications, 2013)A blend system between two different thermoset polymer, epoxy and unsaturated polyester at ratio 80/20 weight percentage (wt. %) with 10, 20, 30 and 40 volume percentage (vol. %) of recycled copper powder as conductive ...