Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider

In this research, the ion beam etching (IBE) process which is used to fabricate a slider is expected to increase the etching rate of IBE. The low thermal and electrical conductivities of cyanoacrylate has to be improved to facilitate the heat transfer efficiently during IBE process and avoid the sli...

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Main Author:	Teoh, Hui Chiang
Format:	Thesis
Language:	English
Published:	2018
Subjects:	T Technology
Online Access:	http://eprints.usm.my/47435/1/Fabrication%20And%20Optimization%20Of%20Cyanoacrylate%20Nanocomposites%20For%20Ion%20Beam%20Etching%20Process%20On%20Hard%20Disk%20Slider.pdf
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spelling	my-usm-ep.474352021-11-17T03:42:13Z Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider 2018-08-01 Teoh, Hui Chiang T Technology TA401-492 Materials of engineering and construction. Mechanics of materials In this research, the ion beam etching (IBE) process which is used to fabricate a slider is expected to increase the etching rate of IBE. The low thermal and electrical conductivities of cyanoacrylate has to be improved to facilitate the heat transfer efficiently during IBE process and avoid the slider’s reader to be damaged by electrostatic discharge (ESD) effect. Therefore, the aim of the study is to improve thermal and electrical conductivities cyanoacrylate by addition of carbon based nanofillers (graphene, multi walled carbon nanotubes (MWCNTs) and graphite nanoparticles). Carbon nanofillers filled cyanoacrylate nanocomposites were fabricated using ultrasonication and mould casting techniques. It was found that graphene and MWCNTs are able to enhance the thermal conductivity by 204 % and 233% of the cyanoacrylate, respectively, but not graphite nanoparticles. The thermal conductivity of cyanoacrylate nanocomposite was enhanced to a maximum value when increasing the amount of nanofillers loading but further increment of nanofillers decreased the thermal conductivity. It was also found out that only MWCNTs decreased the surface and volume resistivities of cyanoacrylate nanocomposite when nanofillers loading was increased from 0.1 to 0.5 vol.%. The optimized hybrid fillers/cyanoacrylate nanocomposite with graphene and MWCNTs achieved research target through design of experiments (DOE) with thermal conductivity of 0.3881 W/mK, surface resistivity of 7.97 x 106 Ω/sq, volume resistivity of 3.35 x 107 Ω.m, and tribocharge of 12 V. However, the tensile strength, ultimate tensile strain and Shore D hardness of optimized cyanoacrylate nanocomposite were decreased as compared to neat cyanoacrylate by 44%, 53% and 18%, respectively. The tensile modulus and maximum shear strength of adhesive lap joint test were statistically equivalence for neat cyanoacrylate and optimized cyanoacrylate nanocomposite. The optimized cyanoacrylate nanocomposite showed improvement in thermal degradation as compared to neat cyanoacrylate. The performance of three inch pallet (TIPs) which applied the optimized cyanoacrylate nanocomposites were improved in heat transfer because no slider with burn defects was found with high etching rate. 2018-08 Thesis http://eprints.usm.my/47435/ http://eprints.usm.my/47435/1/Fabrication%20And%20Optimization%20Of%20Cyanoacrylate%20Nanocomposites%20For%20Ion%20Beam%20Etching%20Process%20On%20Hard%20Disk%20Slider.pdf application/pdf en public phd doctoral Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology T Technology
spellingShingle	T Technology T Technology Teoh, Hui Chiang Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider
description	In this research, the ion beam etching (IBE) process which is used to fabricate a slider is expected to increase the etching rate of IBE. The low thermal and electrical conductivities of cyanoacrylate has to be improved to facilitate the heat transfer efficiently during IBE process and avoid the slider’s reader to be damaged by electrostatic discharge (ESD) effect. Therefore, the aim of the study is to improve thermal and electrical conductivities cyanoacrylate by addition of carbon based nanofillers (graphene, multi walled carbon nanotubes (MWCNTs) and graphite nanoparticles). Carbon nanofillers filled cyanoacrylate nanocomposites were fabricated using ultrasonication and mould casting techniques. It was found that graphene and MWCNTs are able to enhance the thermal conductivity by 204 % and 233% of the cyanoacrylate, respectively, but not graphite nanoparticles. The thermal conductivity of cyanoacrylate nanocomposite was enhanced to a maximum value when increasing the amount of nanofillers loading but further increment of nanofillers decreased the thermal conductivity. It was also found out that only MWCNTs decreased the surface and volume resistivities of cyanoacrylate nanocomposite when nanofillers loading was increased from 0.1 to 0.5 vol.%. The optimized hybrid fillers/cyanoacrylate nanocomposite with graphene and MWCNTs achieved research target through design of experiments (DOE) with thermal conductivity of 0.3881 W/mK, surface resistivity of 7.97 x 106 Ω/sq, volume resistivity of 3.35 x 107 Ω.m, and tribocharge of 12 V. However, the tensile strength, ultimate tensile strain and Shore D hardness of optimized cyanoacrylate nanocomposite were decreased as compared to neat cyanoacrylate by 44%, 53% and 18%, respectively. The tensile modulus and maximum shear strength of adhesive lap joint test were statistically equivalence for neat cyanoacrylate and optimized cyanoacrylate nanocomposite. The optimized cyanoacrylate nanocomposite showed improvement in thermal degradation as compared to neat cyanoacrylate. The performance of three inch pallet (TIPs) which applied the optimized cyanoacrylate nanocomposites were improved in heat transfer because no slider with burn defects was found with high etching rate.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Teoh, Hui Chiang
author_facet	Teoh, Hui Chiang
author_sort	Teoh, Hui Chiang
title	Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider
title_short	Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider
title_full	Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider
title_fullStr	Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider
title_full_unstemmed	Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider
title_sort	fabrication and optimization of cyanoacrylate nanocomposites for ion beam etching process on hard disk slider
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Bahan & Sumber Mineral
publishDate	2018
url	http://eprints.usm.my/47435/1/Fabrication%20And%20Optimization%20Of%20Cyanoacrylate%20Nanocomposites%20For%20Ion%20Beam%20Etching%20Process%20On%20Hard%20Disk%20Slider.pdf
_version_	1747821777007935488

Fabrication And Optimization Of Cyanoacrylate Nanocomposites For Ion Beam Etching Process On Hard Disk Slider

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