Investigating Thermal Stability and Flame Retardant Properties of Synthesized Halloysite Nanotubes (HNT)/Ethylene Propylene Diene Monomer (EPDM) Nanocomposites
-
S. Azarmgin
, B. Kaffashi and S. M. Davachi
Abstract
In this work, Halloysite Nanotube (HNT) was synthesized, using a modified method, from kaolin clay. The scanning electron microscopy (SEM) of the synthesized HNT revealed that many of the nanotubes were tubular; however, spherical and semi-spherical, platy and semi rolled structures were also observed. Fire retardant EPDM compounds composed of typical flame retardants (FR), deca-bromo diphenyl oxide (DBDPO), antimony oxide (Sb2O3), talc and carbon black were prepared. Three elastomer compounds, with 5, 10 and 20 wt.% of synthesized HNT, and one more compound with 10 wt.% of synthesized HNT and 10 wt.% of conventional flame retardants were prepared and formed by a two roll mill. A TEM micrograph was presented to prove the well dispersion of HNT in polymer matrix. The flammability, thermal stability and tensile strength of the compounds were compared to that of typical fire retarded EPDM. The results showed that the typical flame retardants diminish the tensile strength and elongation at break of EPDM elastomers; in addition, these compounds showed the lowest thermal stability among the typical formulations. The extent of flammability of the compounds was characterized using the cone calorimetry technique. The compound containing 5 wt.% HNT showed the highest tensile strength, the least flammability and the highest thermal stability compared to the other compounds. This was related to the good dispersion and also on the tubular structure of the synthesized nanotubes. The peak of heat release rate (PHRR) and total heat release (THR) as well as the amount of hazardous gas emission for the sample having the highest mechanical response was smaller than those with conventional micro-filler flame retardants.
References
Acharya, H., Srivastava, S. K., “Influence of Nanodispersed Organoclay on Rheological and Swelling Properties of Ethylene Propylene Diene Terpolymer”, Macromol. Res., 14, 132–139 (2006) 10.1007/BF03218500Search in Google Scholar
ASTM-Standard, “ASTM D2863 – Test Method for Measuring the Minimum Oxygen Concentration to Support Candle-Like Combustion of Plastics (Oxygen Index)”, ASTM International, West Conshohocken, PA (2000)Search in Google Scholar
Babrauskas, V., “Development of the Cone Calorimeter – A Bench-Scale Heat Release Rate Apparatus Based on Oxygen Consumption”, Fire Mater., 8, 81–95 (1984) 10.1002/fam.810080206Search in Google Scholar
Canaud, C., Yuan, L., Sens, M. A. and Nunes, R., “Dielectric Properties of Flame Resistant EPDM Composites”, Polym. Deg. Stab., 70, 259–262 (2000) 10.1016/S0141-3910(00)00124-5Search in Google Scholar
Chan, C.-M., Wu, J., Li, J.-S. and Cheung, Y. “Polypropylene/Calcium Carbonate Nanocomposites”, Polymer, 43, 2981–2992 (2002) 10.1016/S0032-3861(02)00120-9Search in Google Scholar
Ciselli, P., Lu, L., Busfield, J. and Peijs, T., “Multifunctional Elastomer Nanocomposites based on EPDM and Carbon Nanotubes.”, MRS Proceedings, 1143 (2009), Cambridge Univ. Press., London (2008)10.1557/PROC-1143-KK02-05Search in Google Scholar
Ciullo, P. A., Hewitt, N.: The Rubber Formulary, Noyes Publication, New York (1999)10.1016/B978-081551434-3.50081-6Search in Google Scholar
Colina, F. G., Esplugas, S. and Costa, J., “High-Temperature Reaction of Kaolin with Sulfuric Acid”, Ind. Eng. Chem. Res., 41, 4168–4173 (2002) 10.1021/ie010886vSearch in Google Scholar
Daly, R. C., Fleischer, C. A., Wagner, A. L. and Duffy, M., “Halloysite Nanotubes in Polymers”, NSTI-Nanotech, 1, 187–190 (2008)Search in Google Scholar
Dong, W., Li, W., Yu, K., Krishna, K., Song, L., Wang, X., Wang, Z., Coppens, M.-O. and Feng, S., “Synthesis of Silica Nanotubes from Kaolin Clay”, Chem. Commun., 11, 1302–1303 (2003) 10.1039/b300335cSearch in Google Scholar PubMed
Du, M., Guo, B. and Jia, D., “Thermal Stability and Flame Retardant Effects of Halloysite Nanotubes on Poly(propylene)”, Eur. Polym. J., 42, 1362–1369 (2006) 10.1016/j.eurpolymj.2005.12.006Search in Google Scholar
Ismail, H., Pasbakhsh, P., Fauzi, M. N. A. and Abu Bakar, A., “Morphological, Thermal and Tensile Properties of Halloysite Nanotubes Filled Ethylene Propylene Diene Monomer (EPDM) Nanocomposites”, Polym. Test., 27, 841–850 (2008) 10.1016/j.polymertesting.2008.06.007Search in Google Scholar
Ismail, H., Pasbakhsh, P., Fauzi, M. N. A. and Abu Bakar, A., “The Effect of Halloysite Nanotubes as a Novel Nanofiller on Curing Behaviour, Mechanical and Microstructural Properties of Ethylene Propylene Diene Monomer (EPDM) Nanocomposites”, Polym. Plast. Technol. Eng., 48, 313–323 (2009) 10.1080/03602550802675736Search in Google Scholar
Ismail, H., Salleh, S. Z. and Ahmad, Z., “Curing Characteristics, Mechanical, Thermal, and Morphological Properties of Halloysite Nanotubes (HNTs)-Filled Natural Rubber Nanocomposites”, Polym. Plast. Technol. Eng., 50, 681–688 (2011) 10.1080/03602559.2010.551387Search in Google Scholar
ISO-Standard, “ISO 5660-1. Reaction-to-Fire Tests – Heat Release, Smoke Production and Mass Loss Rate – Part 1: Heat Release Rate (Cone Calorimeter Method)”, ISO, Switzerland, p. 39 (2002)Search in Google Scholar
Joussein, E., Petit, S., Churchman, J., Theng, B., Richi, D. and Delvaux, B., “Halloysite Clay Minerals-A Review”, Clay Minerals, 40, 383–426 (2005) 10.1180/0009855054040180Search in Google Scholar
Kang, D., Kim, D., Yoon, S.-H., Kim, D., Barry, C. and Mead, J., “Properties and Dispersion of EPDM/Modified-Organoclay Nanocomposites.”, Macromol. Mater. Eng., 292, 329–338 (2007) 10.1002/mame.200600355Search in Google Scholar
La Rosa, A., Recca, A., Carter, J. T. and McGrail, P. T., “An Oxygen Index Evaluation of Flammability on Modified Epoxy/Polyester Systems”, Polymer, 40, 4093–4098 (1999) 10.1016/S0032-3861(98)00646-6Search in Google Scholar
Lecouvet, B., Gutierrez, J. G., Sclavons, M. and Bailly, C., “Structure–Property Relationships in Polyamide 12/Halloysite Nanotube Nanocomposites”, Polym. Degrad. Stab., 96, 226–235 (2011) 10.1016/j.polymdegradstab.2010.11.006Search in Google Scholar
Liu, B., Ding, Q., Cai, J., Hu, B. X. and Shen, J., “Novel Preparation and Properties of EPDM/Montmorillonite Nanocomposites”, J. Appl. Polym. Sci., 99, 2578–2585 (2006) 10.1002/app.22887Search in Google Scholar
Liu, Q., Zhang, Y. and Xu, H., “Properties of Vulcanized Rubber Nanocomposites Filled with Nanokaolin and Precipitated Silica”, Applied Clay Science, 42, 232–237 (2008) 10.1016/j.clay.2007.12.005Search in Google Scholar
Marney, D., Russell, L. J., Wu, D. Y., Nguyen, T., Cramm, D., Rigopoulos, N., Wright, N. and Greaves, M., “The suitability of Halloysite Nanotubes as a Fire Retardant for Nylon 6”, Polym. Degrad. Stab., 93, 1971–1978 (2008) 10.1016/j.polymdegradstab.2008.06.018Search in Google Scholar
Montezin, F., Lopez Cuesta, J.-M., Crespy, A. and Georlette, P., “Flame Retardant and Mechanical Properties of a Copolymer PP/PE Containing Brominated Compounds/Antimony Trioxide Blends and Magnesium Hydroxide or Talc”, Fire Mater., 21, 245–252 (1997) 10.1002/(SICI)1099-1018(199711/12)21:6<245::AID-FAM616>3.0.CO;2-FSearch in Google Scholar
Ning, N., Yin, Q., Luo, F., Zhang, Q., Du, R. and Fu, Q., “Crystallization Behavior and Mechanical Properties of Polypropylene/Halloysite Composite”, Polymer, 48, 7374–7384 (2007) 10.1016/j.polymer.2007.10.005Search in Google Scholar
Noordermeer, J. W. M., “Ethylene-Propylene Elastomers” in Encyclopedia of Polymer Science and Technology, John Wiley & Sons, New York, p. 178–196 (2002) 10.1002/0471440264.pst125Search in Google Scholar
Pasbakhsh, P., Ismail, H., Fauzi, M. N. A. and Abu Bakar, A., “The Partial Replacement of Silica or Calcium Carbonate by Halloysite Nanotubes as Fillers in Ethylene Propylene Diene Monomer Composites”, J. Appl. Polym. Sci., 113, 3910–3919 (2009) 10.1002/app.30441Search in Google Scholar
Petsom, A., Roengsumran, S. and Ariyaphattanakul, A., “An Oxygen Index Evaluation of Flammability for Zinc Hydroxystannate and Zinc Stannate as Synergistic Flame Retardants for Acrylonitrile–Butadiene–Styrene Copolymer”, Polym. Degrad. Stab., 80, 17–22 (2003) 10.1016/S0141-3910(02)00377-4Search in Google Scholar
Ray, S., Easteal, A. J., “Advances in Polymer-Filler Composites: Macro to Nano”, Mater. Manuf. Process., 22, 741–749 (2007) 10.1080/10426910701385366Search in Google Scholar
Salamone, J. C.: Polymeric Materials Encyclopedia, Volume 1, CRC Press, New York, p. 2264–2276 (1996)Search in Google Scholar
Schartel, B., Bartholmai, M. and Knoll, U., “Some comments on the Use of Cone Calorimeter Data”, Polym. Degrad. Stab., 88, 540–547 (2005) 10.1016/j.polymdegradstab.2004.12.016Search in Google Scholar
Wu, C. S., Liu, Y., Chiu, Y. and Chiu, Y. S., “Thermal Stability of Epoxy Resins Containing Flame Retardant Components: An Evaluation with Thermogravimetric Analysis”, Polym. Degrad. Stab., 78, 41–48 (2002) 10.1016/S0141-3910(02)00117-9Search in Google Scholar
Ye, Y., Chen, H., Wu, J. and Ye, L., “High Impact Strength Epoxy Nanocomposites with Natural Nanotubes”, Polymer, 48, 6426–6433 (2007) 10.1016/j.polymer.2007.08.035Search in Google Scholar
Yu, L., Wang, W. and Xiao, W., “The Effect of Decabromodiphenyl Oxide and Antimony Trioxide on the Flame Retardation of Ethylene–Propylene–Diene Copolymer/Polypropylene Blends”, Polym. Degrad. Stab., 86, 69–73 (2004) 10.1016/j.polymdegradstab.2004.01.015Search in Google Scholar
© 2015, Carl Hanser Verlag, Munich
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Extrusion Defects and Flow Instabilities of Molten Polymers
- Investigating Thermal Stability and Flame Retardant Properties of Synthesized Halloysite Nanotubes (HNT)/Ethylene Propylene Diene Monomer (EPDM) Nanocomposites
- Absorption Coefficient Measurement in Laser Transmission Welding of Thermoplastics
- Styrene/Isoprene/Styrene Thermoplastic Elastomer Prepared by Anionic Bulk Polymerization in a Twin-Screw Extruder
- Improving Film Die Flow Uniformity Using Optimization Methods Coupled with Finite Element Computational Fluid Dynamics (CFD) Analysis
- UV-Curable Technique of Magnetic Roller Soft Mold and Microstructure Pattern Replication
- Rheological Indicators for Environmental Stress Cracking Resistance of Polyethylene
- Effect of Alumina Particles Embedded in Natural Rubber Foams on Cell Morphology and Thermo-Mechanical Properties
- Effects of SEBS-g-MA on Rheology, Morphology and Mechanical Properties of PET/HDPE Blends
- Measurement and Numerical Simulation of Void and Warpage in Glass Fiber Reinforced Molded Chunky Parts
- Experimental Study for Extrusion of Polypropylene/Wood Flour Composites
- A Personal Perspective on the Use of Modelling Simulation for Polymer Melt Processing
- Slip Heating in Die Drool with Viscous Dissipation
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts
Articles in the same Issue
- Contents
- Contents
- Regular Contributed Articles
- Extrusion Defects and Flow Instabilities of Molten Polymers
- Investigating Thermal Stability and Flame Retardant Properties of Synthesized Halloysite Nanotubes (HNT)/Ethylene Propylene Diene Monomer (EPDM) Nanocomposites
- Absorption Coefficient Measurement in Laser Transmission Welding of Thermoplastics
- Styrene/Isoprene/Styrene Thermoplastic Elastomer Prepared by Anionic Bulk Polymerization in a Twin-Screw Extruder
- Improving Film Die Flow Uniformity Using Optimization Methods Coupled with Finite Element Computational Fluid Dynamics (CFD) Analysis
- UV-Curable Technique of Magnetic Roller Soft Mold and Microstructure Pattern Replication
- Rheological Indicators for Environmental Stress Cracking Resistance of Polyethylene
- Effect of Alumina Particles Embedded in Natural Rubber Foams on Cell Morphology and Thermo-Mechanical Properties
- Effects of SEBS-g-MA on Rheology, Morphology and Mechanical Properties of PET/HDPE Blends
- Measurement and Numerical Simulation of Void and Warpage in Glass Fiber Reinforced Molded Chunky Parts
- Experimental Study for Extrusion of Polypropylene/Wood Flour Composites
- A Personal Perspective on the Use of Modelling Simulation for Polymer Melt Processing
- Slip Heating in Die Drool with Viscous Dissipation
- PPS News
- PPS News
- Seikei Kakou Abstracts
- Seikei Kakou Abstracts