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Feasibility study of polysiloxane filled silica as a heat insulator application

Yang Ghazali, Zalika (2014) Feasibility study of polysiloxane filled silica as a heat insulator application. Masters thesis, Universiti Tun Hussein Onn Malaysia.

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Polysiloxane or so called polymerized siloxane is basically silicones which are mixed of inorganic-organic polymers. Based on the previous study referred, there were limitation of the study on the elastomer as heat insulator, because researches more interested in investigation of the application of electrical insulator. The main objective of this study is to investigate and compare the performance of heat insulator produced by rice husk and synthetic silica as the filler. In this study, silica was used as the matrix filler of polysiloxane as the application of heat insulation. Polysiloxane were mixed with different percentage of both types of silica powder, which ranges of silica weight percentage from 0 wt% to 12 wt%. Casting process was conducted for the preparation of polysiloxane mixed with silica. The silica powder itself was evaluated based on its physical property and crystal structure by XRD analysis. As for the polysiloxane filled with silica, several testing were done such as density test, tensile test, thermogravimeric analysis and also heat insulation test. As for XRD analysis, phase identification was achieved by comparing the diffraction patterns of silica powder with JCPDS 46-1045 as for standard synthetic silica. Density test show that rice husk amorphous silica filler shown higher density than the synthetic silica filler. For tensile strength, both silica filler show different pattern of highest tensile strength, as rice husk filler shown at 10 wt%, while synthetic at 2 wt%. These percentages provide highest stress before it breaks at some point. TGA testing and heat insulation testing are the thermal testing which undergo to know the capability and how the polymers react with heat. Higher percentages of silica prove to be better heat insulator than without addition of silica.

Item Type: Thesis (Masters)
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA349-359 Mechanics of engineering. Applied mechanics
Depositing User: Normajihan Abd. Rahman
Date Deposited: 24 Jun 2014 04:23
Last Modified: 20 Jul 2020 08:02
URI: http://eprints.uthm.edu.my/id/eprint/5554
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