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AC breakdown characteristic of silicone rubber and epdm blend with various types of nanofiller for solid insulator application

AC breakdown characteristic of silicone rubber and epdm blend with various types of nanofiller for solid insulator application / Nur Tahirah Binti Md Ariffin

Abstract Pada masa kini, penggunaan teknologi nano berkembang pesat dalam banyak sektor. Sebagai contoh, ia digunakan bagi menguatkan penebat pepejal dalam sistem voltan tinggi. Dalam projek ini, kekuatan dielektrik pada campuran SiR/EPDM yang digabungkan dengan SiO2, ZnO, CaCO3 dan MgO pengisi nano telah dikaji. Pemalar dielektrik bagi setiap sampel diperhatikan menggunakan Peanganalisa Bahan. Hasil daripada analisa menunjukkan pengurangan pemalar dielektrik bagi campuran SiR /EPDM dengan penambahan SiO2, ZnO, dan CaCO3 jika dibandingkan dengan yang tidak dipenuhi. Penyebaran pengisi nano juga dikaji menggunakan ujian morfologi SEM. Dari pemerhatian tersebut, SiO2 di dalam SiR/EPDM terserak secara sekata manakala penyerakan ZnO adalah kurang. Pengumpulan pengisi nano diperhatikan dalam SiR/EPDM/CaCO3 dan SiR/EPDM/MgO komposit nano. SiO2 yang ditambah dalam SiR/EPDM menunjukkan peningkatan dalam kekuatan dielektrik sebanyak 17.49% dengan pemalar dielektrik yang rendah dan sebaran pengisi nano secara sekata. ZnO juga menunjukkan peningkatan kekuatan dielektrik sebanyak 7.39%. Walau bagaimanapun, kekuatan dielektrik bagi SiR/EPDM komposit yang ditambah dengan pengisi nano CaCO3 dan MgO masing-masing berkurang sebanyak 4.50% dan 15.44%. Antara keempat-empat jenis pengisi nano ini, SiO2 menunjukkan kekuatan dielektrik tertinggi. Hubungan antara pemalar dielektrik, penyebaran pengisi nano serta kekuatan dielektrik dianalisis dan dibincangkan dalam tesis ini. _______________________________________________________________________________________________________ Nowadays, the application of nanotechnology in many sectors is developing fast. For instance, it is used in enhancement of solid insulator in high voltage system. In this project, the dielectric strength of SiR/EPDM blends incorporating with SiO2, ZnO, CaCO3 and MgO nanofillers were investigated. The dielectric constant for each sample was observed using Material Analyzer. The result shows the reduction in dielectric constant of SiR/EPDM blend with the addition of SiO2, ZnO, and CaCO3 as compared to unfilled one. The dispersion of nanofillers also was studied using SEM morphology test. From the observation, SiO2 in SiR/EPDM dispersed homogenously while ZnO is poor dispersed. The agglomeration of nanofillers is observed in SiR/EPDM/CaCO3 and SiR/EPDM/MgO nanocomposites respectively. SiO2 incorporate with SiR/EPDM shows increasing in dielectric strength by 17.49% with low dielectric constant and homogenously dispersed nanofillers. ZnO also shows increasing dielectric strength by 7.39%. However, CaCO3 and MgO nanofiller in SiR/EPDM composite decreased the dielectric strength by 4.50% and 15.44% respectively. Among of these four types of nanofillers, SiO2 gives the highest dielectric strength. The correlation between dielectric constant, dispersion of nanofillers and dielectric strength are analyzed and discussed in this thesis.

Contributor(s): Nur Tahirah Md Ariffin - Author Primary Item Type: Final Year Project Identifiers: Accession Number : 875005043 Language: English Subject Keywords: nanotechnology; dielectric; SiR/EPDM First presented to the public: 6/1/2013 Original Publication Date: 11/22/2019 Previously Published By: Universiti Sains Malaysia Place Of Publication: School of Electrical & Electronic Engineering Citation: Extents: Number of Pages - 81 License Grantor / Date Granted:   / ( View License ) Date Deposited 2019-12-02 18:05:58.156 Submitter: Mohd Jasnizam Mohd Salleh

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