Ablation and thermo-mechanical tailoring of EPDM rubber using carbon fibers
-
Muhammad Asghar
,
Sadia Sagar Iqbal
Abstract
Carbon fibers (CFs) are incorporated into ethylene propylene diene monomer (EPDM) rubber to fabricate charring elastomeric ablative composites for ultrahigh temperature applications. Ablation characteristics of the ablative composites were evaluated using ASTM E285-08. Variant content incorporation of short CFs in the basic composite formulation reduced the backface temperature acclivity and the ablation rate rose up to 48% and 78%, correspondingly. Thermal stability and endothermic capability were improved with increasing short fiber contents in the rubber matrix. Experimental thermal conductivity measurement results elucidate that thermal conductivity reduces 60% at 473 K with 6 wt% addition of the fibers. A remarkable improvement was scrutinized in the tensile strength and rubber hardness with increasing fiber to matrix ratio. Scanning electron microscopy (SEM)/energy dispersive X-ray spectroscopy (EDS) analysis of the composite specimens revealed the uniform dispersion of CFs within the host matrix, formation of voids during ablation, char-reinforcement interaction and composition of the charred ablators and the impregnated fibers.
Acknowledgments
The authors have greatly acknowledged Sheikh Iftikhar Ahmed, MD Longman mills for providing facilities regarding fabrication of the ablative specimens, Pakistan Railways Carriage Factory, Islamabad for ablation testing, Dr. Mohammad Bilal Khan for his valuable expert discussions and Dr. Mohammad Mujahid, Principal School of Chemical and Materials Engineering, National University of Sciences and Technology for SEM/EDS analysis.
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original articles
- Prolonged protein immobilization of biosensor by chemically cross-linked glutaraldehyde on mixed cellulose membrane
- Hybrid biocomposites from agricultural residues: mechanical, water absorption and tribological behaviors
- Effects of nucleation and stereocomplex formation of poly(lactic acid)
- Preparation and characterization of polystyrene-MgAl layered double hydroxide nanocomposites using bulk polymerization
- Fracture behavior and deformation mechanisms of polypropylene/ethylene-propylene-diene blends
- Effect of mechanical properties of metal powder-filled hybrid moulded products
- Ablation and thermo-mechanical tailoring of EPDM rubber using carbon fibers
- Effects of mechanical strength, working temperature and wax lubricant on tribological behavior of polystyrene
- Temperature rise in a verging annular die
- Numerical investigation of the temperature influence on the melt predistribution in a spiral mandrel die with different polyolefins
Articles in the same Issue
- Frontmatter
- Original articles
- Prolonged protein immobilization of biosensor by chemically cross-linked glutaraldehyde on mixed cellulose membrane
- Hybrid biocomposites from agricultural residues: mechanical, water absorption and tribological behaviors
- Effects of nucleation and stereocomplex formation of poly(lactic acid)
- Preparation and characterization of polystyrene-MgAl layered double hydroxide nanocomposites using bulk polymerization
- Fracture behavior and deformation mechanisms of polypropylene/ethylene-propylene-diene blends
- Effect of mechanical properties of metal powder-filled hybrid moulded products
- Ablation and thermo-mechanical tailoring of EPDM rubber using carbon fibers
- Effects of mechanical strength, working temperature and wax lubricant on tribological behavior of polystyrene
- Temperature rise in a verging annular die
- Numerical investigation of the temperature influence on the melt predistribution in a spiral mandrel die with different polyolefins
