KAJIAN KEKUATAN TARIK DAN KETAHANAN BAKAR KOMPOSIT GEOPOLIMER MONMORRILONIT−PHENOLYC−SERAT KARBON

, Sutrisno (2013) KAJIAN KEKUATAN TARIK DAN KETAHANAN BAKAR KOMPOSIT GEOPOLIMER MONMORRILONIT−PHENOLYC−SERAT KARBON. Masters thesis, Universitas Sebelas Maret.

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    Abstract

    The roof tile dusts derived from the waste of roof tile industry have not been utilized in technical field. The Sokka roof tile dusts are potential as geopolymer composite material for they have a high strength, a high hardness, and a hightemperature resistance. To produce strong and fire-resistance composites, phenolyc resin and carbon fiber are required. This research discusses the effect of the carbon fiber volume fraction and the Sokka roof tile dust/MMt clay volume fraction on the tensile strength and the fire resistance of the geopolymer composites. The Sokka roof tiles were respectively crushed, sieved to obtain particles with the size +200, heated in an oven with the temperature of 100 °C for an hour, and molded with hand lay-up technique with the matrix of phenolyc resin of LP1Q EX + carbon fibers. The variations employed were fiber orientation variations of 0/90°and 45/45° with the variables of volume fraction (Sokka roof tile dusts + carbon fibers = 40%) and with the fixed phenolyc resin volume fraction (60%). Then they were then exposed to final touch according to standardized sizes for ASTM testing. The tensile strength, the fire resistance, and the density were based on ASTM D 638, ASTM D 635, and ASTM D 792-98 respectively. The result of the research shows that the fiber orientation composition of 0/90°at a 10-laminate variation has the tensile stress of 434.95 MPa and the elasticity modulus of 7.66 GPa. The highest fire resistance is at the 10-laminate variation with the burning time of 28.39 seconds and the burning rate of 8.13 mm/min. The lowest density takes place at the 10-laminate variation, that is, 1.344 g/cm 3 . The SEM photograph shows that the 10-laminate variation has better inter-fiber bonding, matrix, and dusts than those at other variations. The geopolymer composites are very good to be used as industrial components particularly for automotive industry as they have a good tensile strength, a good fire resistance, and a low material density. Serbuk genteng Sokka merupakan limbah industri genteng, selama ini belum dimanfaatkan secara maksimal. Serbuk genteng Sokka dapat dimanfaatkan sebagai bahan komposit geopolimer karena mempunyai kekuatan dan kekakuan yang tinggi serta tahan terhadap temperatur tinggi. Untuk membuat komposit yang kuat dan tahan bakar diperlukan resin Phenolyc dan serat karbon. Penelitian ini membahas pengaruh fraksi volume serat karbon dan fraksi volume serbuk genteng Sokka/lempung MMt terhadap kekuatan tarik dan ketahanan bakar komposit geopolimer. Genteng Sokka dihancurkan dan diayak sehingga didapatkan ukuran partikel +200, di oven selama 1 jam dengan suhu 100 °C, selanjutnya dicetak secara hand lay up dengan dengan matrik resin phenolyc LP 1Q EX + serat karbon. Variasi yang dipakai yaitu variasi orientasi serat 0/90° dan 45/45° dengan variasi peubah fraksi volume (serbuk genteng Sokka + serat karbon = 40%) sedang fraksi volume resin phenolyc tetap (60%). Hasil cetakan difinishing sesuai ukuran standard ASTM. Pengujian tarik sesuai ASTM D 638, ketahanan bakar sesuai ASTM D 635, dan massa jenis sesuai ASTM D 792-98. Hasil penelitian menunjukkan bahwa tegangan tarik dan modulus elastisitas tertinggi adalah komposisi orientasi serat 0/90° pada variasi 10 laminat dengan tegangan tarik sebesar 434,95 MPa dan modulus elastisitas 7,66 GPa. Ketahanan bakar tertinggi pada variasi 10 laminat dengan waktu penyalaan 28,39 detik dan kecepatan bakar 8,13 mm/menit. Massa jenis paling rendah terjadi pada variasi 10 laminat yaitu 1,344 g/cm 3 . Foto SEM menunjukkan bahwa variasi 10 laminat mempunyai ikatan antara serat, matrik, dan serbuk lebih baik daripada variasi yang lain. Komposit geopolimer sangat baik digunakan untuk komponen industri khususnya otomotif karena mempunyai sifat kekuatan tarik baik, ketahanan bakar baik, dan densitas material tergolong rendah.

    Item Type: Thesis (Masters)
    Subjects: Q Science > QD Chemistry
    Q Science > QE Geology
    Divisions: Pasca Sarjana > Magister
    Depositing User: Vignasari Kokasih
    Date Deposited: 10 May 2014 06:03
    Last Modified: 10 May 2014 06:03
    URI: https://eprints.uns.ac.id/id/eprint/15714

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