The influence of montmorillonite on mechanical, thermal and fire retardation properties of vinylester/glass composites

Autor:	M. Krishna, Bailure S. Sherigara, H.N. Narasimha Murthy, Rajeswari Sridhar, B. E. Kumaraswamy, K.R. Vishnu Mahesh
Rok vydání:	2012
Předmět:	chemistry.chemical_compound Materials science Glass composites Montmorillonite chemistry Mechanics of Materials Scanning electron microscope Mechanical Engineering Thermal X-ray crystallography Materials Chemistry Ceramics and Composites Composite material
Zdroj:	Journal of Composite Materials. 47:2163-2178
ISSN:	1530-793X 0021-9983
DOI:	10.1177/0021998312454902
Popis:	This paper presents the influence of dispersing montmorillonite in 2 to 8 wt% in vinylester on the mechanical, thermal and fire retardation behaviour of vinylester/glass composites. X-ray diffraction and transmission electron microscopy results of montmorillonite/vinylester showed exfoliation of montmorillonite up to 4 wt% loading. Glass transition temperature ( Tg) and microhardness of montmorillonite/vinylester increased with increase in montmorillonite loading. Tensile strength, interlaminar shear strength, flexural strength, impact strength and fatigue life of vinylester/glass increased by the addition of 4 wt% montmorillonite. Thermogravimetric analysis showed decrease in thermal degradation in 4 wt%/montmorillonite/vinylester compared to 2 wt%/montmorillonite/vinylester. Horizontal and vertical burning rates of vinylester/glass decreased with the addition of montmorillonite. Limiting oxygen index increased by 18% and 25% with the addition of 8 wt% montmorillonite to vinylester and vinylester/glass respectively. Scanning electron microscopy was used to study montmorillonite, vinylester and glass fibre interfacial strengths and the fatigue damage mechanism.
Databáze:	OpenAIRE
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