Karakteristik Termal (DTA/TGA) dan Konduktivitas Termal Cordierite (2MgO.2Al2O3.5SiO2) Berbasis Silika Sekam Padi Akibat Penambahan MgO (0, 10, 15%berat)
Abstract: Synthesis and
characterization of cordierite-based rice husk silica has been conducted by MgO
0, 10, and 15wt%. Preparation of cordierite used MgO, Al2O3, and silica rice
husk. Silica was extracted by alkalis method using 1,5 NaOH solution and 10%
HNO3. The samples were sintered at temperature of 1250°C. The characteristics
of thermal were analysed by DTA/TGA and thermal conductivity were analysed by
ASTM E1530, while physics characterization were anlysed by density and
porosity. DTA/TGA result showed that the crystallization process of cordierite
through spinel bonding. The thermal conductivity values obtained were between
2,9089-3,1647 (W/m.K). Based on the result, it can be concluded that the
addition of MgO on cordierite increased thermal conductivity and porosity as
well as reduced density.
Penulis: Annisa Rizka Amalia,
Simon Sembiring, Wasinton Simanjuntak
Kode Jurnal: jpfisikadd170091
