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Potensi Material Komposit Epoxy Resin/MgO/Karbon terhadap penyerapan Gelombang Mikro

Mahmudah, Mahmudah (2014) Potensi Material Komposit Epoxy Resin/MgO/Karbon terhadap penyerapan Gelombang Mikro. Undergraduate thesis, Universitas Islam Negeri Maulana Malik Ibrahim.

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Abstract

ABSTRAK

Perkembangan teknologi telekomunikasi yang menggunakan gelombang mikro menyebabkan gangguan pada sistem peralatan berbasis elektronik, keamanan dan kesehatan manusia, sehingga diperlukan material absober yang dapat memfilter radiasi EM yang dipancarkan. Material absober dibuat dalam bentuk komposit dengan matrik epoksi dan filler karbon aktif dan MgO dengan perbandingan 10:0, 3:7, 5:5, 7:3 dan 0:10 (%wt). Pencampuran dilakukan menggunakan magnetic stirrer dengan kecepatan 250
rpm pada suhu 70⁰C selama 10 menit. Sampel dituang dalam cetakan dan dikeringkan pada suhu ruang. Karakterisasi sifat listrik dengan LCR meter menunjukkan bahwa pada sampel dengan 10% karbon dan 0% MgO memiliki dielectric loss tertinggi sebesar 0,15992. Pada bahan terjadi polarisasi muatan ruang (Space Charge) dan polarisasi dipolar. Pada ketebalan 1 mm nilai permitivitas lebih besar dibandingkan dengan ketebalan 2 mm. Seiring dengan penambahan MgO nilai Susceptibilitas bahan menurun. Nilai suseptibilitas tertinggi pada bahan 10% karbon yaitu sebesar 8,75155 x 10-8. Reflection loss maksimum diperoleh pada sampel dengan komposisi MgO 7% dan karbon 3% sebesar -29,7 dB pada jangkauan frekuensi 8,7 GHz dengan presentase penyerapan sebesar 99,89 %.

ABSTRACT

The development of telecommunications technology that uses microwaves cause interference of electronic equipment systems, security and human health, so it is needed material absober to filter EM radiation. Absober materials are made of composites with epoxy resins as matrix and activated carbon and MgO as filler with comparrison of weight are 10:0, 3:7, 5:5, 7:3, and 0:10 (wt%). Then mixed them using magnetic stirrer at 250 rpm and 70⁰ C for 10 minutes. These homogenous solution were casted into molds and dried at room temperature. Characterization of the electrical properties with LCR meter showed that the sample with 10% carbon and 0% MgO has the highest dielectric loss, it is 0.15992. The sample are showed space charge polarization and dipolar polarization. Permittivity value of sample with a thickness of 1 mm is greater than the thickness of 2 mm. Along with the addition of MgO susceptibility values decreased of materials. The highest susceptibility values at 10% carbon material is 8.75155 x 10-8. The maximum reflection loss obtained on samples with composition MgO 7% and 3% carbon was -29.7 dB at 8.7 GHz frequency range, with a percentage of absorption is 99.89%.

Item Type: Thesis (Undergraduate)
Supervisor: Hastuti, Erna and Basid, Abdul
Contributors:
ContributionNameEmail
UNSPECIFIEDHastuti, ErnaUNSPECIFIED
UNSPECIFIEDBasid, AbdulUNSPECIFIED
Keywords: Gelombang Mikro; Komposit; Epoxy Resin; MgO; dan Karbon Microwaves; Composites; Epoxy Resins; MgO; and Carbon
Departement: Fakultas Sains dan Teknologi > Jurusan Fisika
Depositing User: Moch. Nanda Indra Lexmana
Date Deposited: 03 May 2023 14:14
Last Modified: 03 May 2023 14:14
URI: http://etheses.uin-malang.ac.id/id/eprint/49363

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