Volume 8 Issue 3 ( September 2021 )


Analysis of Thermal Performance of Mica-Mineral Reinforced Intumescent Coating for Structural Steel Application

Yasmin Mohd-Azmi, Faiz Ahmad, Sarower Kabir, Norlin Nosbi, Yeoh Guan Heng, Ayesha Zulfiqar


Hotspot distribution area is very important to know, in order to anticipate and minimize the risk of fire. The research objective is The Potential Mapping of Land Fires Using SNPP VIIRS. The research used a survey method to collect data. Data processing techniques using ArcGIS software with scoring, overlay and clustering techniques. The highest number of hotspots in South Kalimantan is in Banjar Regency, with 17428 including low confidence (1303), nominal confidence (15444) and high confidence (681). The results of the mapping of existing Fire Potentials can be used as Intumescent coating reinforce mica was developed and studied in terms of their physical appearance, thermal properties, composition, and morphology. 6 samples, including control formulation, were developed by varying percentage of mica to binder from 0 to 5%. Control fire test shows an increase of expansion when the percentage of mica increases but decreases when more than 4% of mica was used. The thermal stability of the samples with 3% mica was improved with a degradation rate of 0.047 wt.%/min compared to the control formulation 0.091wt%/min suggested coming from silicon phosphate oxide composition emerged on XRD analysis. Silicon phosphate oxide was known to enhance the antioxidation of the char and thermal stability of the char. A homogenous surface with a smaller pore was also observed on the char structure of MC3 coming from the ceramization process, which creates a ceramics layer on the surface, thus improve the insulation properties of the coating.

Keywords: Intumescent Coating, Mica, Zinc Borate, Structural Steel, Flame-Retardant, Passive Fire Protection