The Experts below are selected from a list of 4689 Experts worldwide ranked by ideXlab platform
Halimaton Hamdan - One of the best experts on this subject based on the ideXlab platform.
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Effect of silica aerogel – Aluminium trihydroxide Hybrid Filler on the physio-mechanical and thermal decomposition behaviour of unsaturated polyester resin composite
Polymer Degradation and Stability, 2020Co-Authors: Zulhelmi Alif Abdul Halim, Muhamad Azizi Mat Yajid, Fajar Anugrah Nurhadi, Norhayati Ahmad, Halimaton HamdanAbstract:Abstract Aluminum trihydroxide (ATH) is an eco-friendly and economical additive used in polymers as a flame retardant (FR), but its low thermal stability has become an important issue that is critical in determining the fire protection and thermal stability of the composites. The present study was an attempt to enhance the thermal stability of ATH to some extent by combining it with nano-porous silica known as silica aerogel (SA) as a Hybrid FR Filler in unsaturated polyester resin (UPR). Ultra-low density SA (0.07 g/cm3) in the form of fine particles was extracted from renewable resources (i.e. rice husk), through a sol-gel process, surface modification and dried at atmospheric pressure. From our findings, it is found that the addition of the Hybrid Filler into UPR results in interesting properties such as lightweight, flame retardancy and enhanced thermal stability whose properties cannot be gained by composites with single Filler. From thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and gas analysis using Fourier transform infrared spectroscopy (FTIR); it is evident that doping the ATH with SA helps to improve the thermal stability via synergistic effect, by extending the ATH decomposition process over a wider temperature range. As a result, the UPR filled with SA/ATH Hybrid demonstrates higher thermal stability when compared to the composites filled with only ATH or SA. Furthermore, the SA/ATH Hybrid also provides sufficient flame retardancy in UPR as evaluate by ASTM D635-14 (UL–94) horizontal burning test. For mechanical properties, a sharp increase in tensile strength was observed for UPR filled with ATH or SA while the addition of SA/ATH Hybrid Filler only slightly increases the tensile properties of UPR due to particle agglomerations and porosities.
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effect of silica aerogel aluminium trihydroxide Hybrid Filler on the physio mechanical and thermal decomposition behaviour of unsaturated polyester resin composite
Polymer Degradation and Stability, 2020Co-Authors: Zulhelmi Alif Abdul Halim, Muhamad Azizi Mat Yajid, Fajar Anugrah Nurhadi, Norhayati Ahmad, Halimaton HamdanAbstract:Abstract Aluminum trihydroxide (ATH) is an eco-friendly and economical additive used in polymers as a flame retardant (FR), but its low thermal stability has become an important issue that is critical in determining the fire protection and thermal stability of the composites. The present study was an attempt to enhance the thermal stability of ATH to some extent by combining it with nano-porous silica known as silica aerogel (SA) as a Hybrid FR Filler in unsaturated polyester resin (UPR). Ultra-low density SA (0.07 g/cm3) in the form of fine particles was extracted from renewable resources (i.e. rice husk), through a sol-gel process, surface modification and dried at atmospheric pressure. From our findings, it is found that the addition of the Hybrid Filler into UPR results in interesting properties such as lightweight, flame retardancy and enhanced thermal stability whose properties cannot be gained by composites with single Filler. From thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and gas analysis using Fourier transform infrared spectroscopy (FTIR); it is evident that doping the ATH with SA helps to improve the thermal stability via synergistic effect, by extending the ATH decomposition process over a wider temperature range. As a result, the UPR filled with SA/ATH Hybrid demonstrates higher thermal stability when compared to the composites filled with only ATH or SA. Furthermore, the SA/ATH Hybrid also provides sufficient flame retardancy in UPR as evaluate by ASTM D635-14 (UL–94) horizontal burning test. For mechanical properties, a sharp increase in tensile strength was observed for UPR filled with ATH or SA while the addition of SA/ATH Hybrid Filler only slightly increases the tensile properties of UPR due to particle agglomerations and porosities.
A Ariffin - One of the best experts on this subject based on the ideXlab platform.
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Effect of chemical treatments on the mechanical, flow, and morphological properties of talc‐ and kaolin‐filled polypropylene Hybrid composites
Journal of Applied Polymer Science, 2008Co-Authors: M. Abu Bakar, Yew Wei Leong, A Ariffin, Z. A. Mohd IshakAbstract:This study was performed with commer- cially available phenyl trimethoxysilane (PTMS) and neoal- koxytitanate (i.e., neopentyl(diallyl)oxytri(dioctyl)phosphato titanate (LICA 12)) as coupling agents. PTMS and LICA 12 were used to treat talc and kaolin to compare their effects with untreated Fillers upon incorporation into polypropyl- ene (PP). Single-Filler PP composites (containing either talc or kaolin) and Hybrid-Filler composites (containing a mix of both talc and kaolin) were compounded in a twin-screw ex- truder and subsequently injection-molded into dumbbells. The incorporation of PTMS and LICA 12 slightly decreased the tensile and flexural properties in terms of modulus and strength but increased the elongation at break for both sin- gle-Filler and Hybrid-Filler composites. There was also a sig- nificant improvement in the impact strength of the composites, particularly those treated with LICA 12. The Hybrid composites, through the synergistic coalescence of positive characteristics from talc and kaolin with the aid from chemical treatment provided an economically advan- tageous material with mechanical properties comparable to those of the single-Filler-filled PP composites. Further investigations on flow and morphological properties were also done to correlate the mechanical properties of the single- and Hybrid-Filler-filled PP composites. V C 2008 Wiley
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characterization of talc calcium carbonate filled polypropylene Hybrid composites weathered in a natural environment
Polymer Degradation and Stability, 2004Co-Authors: Yew Wei Leong, Abu M Bakar, Z Mohd A Ishak, A AriffinAbstract:Abstract Two kinds of composites, namely single-Filler polypropylene (PP) composites (containing either talc or calcium carbonate) and Hybrid-Filler PP composites (consist of a mixture of talc and calcium carbonate) were injection moulded into dumbbells. These specimens were subjected to natural weathering i.e. tropical climate in Penang, Malaysia for 6 months. After 6 months of exposure, the mechanical properties of single-Filler PP composites deteriorated due to severe physical and chemical degradation. However, the Hybrid-Filler PP composites were found to show better retention in mechanical properties albeit having undergone some degree of surface-degradation as well. It is believed that the ‘Hybridization’ effect has successfully increased the resistance of the Hybrid composite to severe environmental degradation to the extent that it protects the internal structure of the composite from environmental damage, even though the surface of the composite gets severely degraded. Surface treatment of Fillers was also found to be able to aid in the retention of the composites’ mechanical properties.
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Characterization of talc/calcium carbonate filled polypropylene Hybrid composites weathered in a natural environment
Polymer Degradation and Stability, 2004Co-Authors: Yew Wei Leong, M. Abu Bakar, Z. A. Mohd Ishak, A AriffinAbstract:Abstract Two kinds of composites, namely single-Filler polypropylene (PP) composites (containing either talc or calcium carbonate) and Hybrid-Filler PP composites (consist of a mixture of talc and calcium carbonate) were injection moulded into dumbbells. These specimens were subjected to natural weathering i.e. tropical climate in Penang, Malaysia for 6 months. After 6 months of exposure, the mechanical properties of single-Filler PP composites deteriorated due to severe physical and chemical degradation. However, the Hybrid-Filler PP composites were found to show better retention in mechanical properties albeit having undergone some degree of surface-degradation as well. It is believed that the ‘Hybridization’ effect has successfully increased the resistance of the Hybrid composite to severe environmental degradation to the extent that it protects the internal structure of the composite from environmental damage, even though the surface of the composite gets severely degraded. Surface treatment of Fillers was also found to be able to aid in the retention of the composites’ mechanical properties.
Zulhelmi Alif Abdul Halim - One of the best experts on this subject based on the ideXlab platform.
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Effect of silica aerogel – Aluminium trihydroxide Hybrid Filler on the physio-mechanical and thermal decomposition behaviour of unsaturated polyester resin composite
Polymer Degradation and Stability, 2020Co-Authors: Zulhelmi Alif Abdul Halim, Muhamad Azizi Mat Yajid, Fajar Anugrah Nurhadi, Norhayati Ahmad, Halimaton HamdanAbstract:Abstract Aluminum trihydroxide (ATH) is an eco-friendly and economical additive used in polymers as a flame retardant (FR), but its low thermal stability has become an important issue that is critical in determining the fire protection and thermal stability of the composites. The present study was an attempt to enhance the thermal stability of ATH to some extent by combining it with nano-porous silica known as silica aerogel (SA) as a Hybrid FR Filler in unsaturated polyester resin (UPR). Ultra-low density SA (0.07 g/cm3) in the form of fine particles was extracted from renewable resources (i.e. rice husk), through a sol-gel process, surface modification and dried at atmospheric pressure. From our findings, it is found that the addition of the Hybrid Filler into UPR results in interesting properties such as lightweight, flame retardancy and enhanced thermal stability whose properties cannot be gained by composites with single Filler. From thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and gas analysis using Fourier transform infrared spectroscopy (FTIR); it is evident that doping the ATH with SA helps to improve the thermal stability via synergistic effect, by extending the ATH decomposition process over a wider temperature range. As a result, the UPR filled with SA/ATH Hybrid demonstrates higher thermal stability when compared to the composites filled with only ATH or SA. Furthermore, the SA/ATH Hybrid also provides sufficient flame retardancy in UPR as evaluate by ASTM D635-14 (UL–94) horizontal burning test. For mechanical properties, a sharp increase in tensile strength was observed for UPR filled with ATH or SA while the addition of SA/ATH Hybrid Filler only slightly increases the tensile properties of UPR due to particle agglomerations and porosities.
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effect of silica aerogel aluminium trihydroxide Hybrid Filler on the physio mechanical and thermal decomposition behaviour of unsaturated polyester resin composite
Polymer Degradation and Stability, 2020Co-Authors: Zulhelmi Alif Abdul Halim, Muhamad Azizi Mat Yajid, Fajar Anugrah Nurhadi, Norhayati Ahmad, Halimaton HamdanAbstract:Abstract Aluminum trihydroxide (ATH) is an eco-friendly and economical additive used in polymers as a flame retardant (FR), but its low thermal stability has become an important issue that is critical in determining the fire protection and thermal stability of the composites. The present study was an attempt to enhance the thermal stability of ATH to some extent by combining it with nano-porous silica known as silica aerogel (SA) as a Hybrid FR Filler in unsaturated polyester resin (UPR). Ultra-low density SA (0.07 g/cm3) in the form of fine particles was extracted from renewable resources (i.e. rice husk), through a sol-gel process, surface modification and dried at atmospheric pressure. From our findings, it is found that the addition of the Hybrid Filler into UPR results in interesting properties such as lightweight, flame retardancy and enhanced thermal stability whose properties cannot be gained by composites with single Filler. From thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and gas analysis using Fourier transform infrared spectroscopy (FTIR); it is evident that doping the ATH with SA helps to improve the thermal stability via synergistic effect, by extending the ATH decomposition process over a wider temperature range. As a result, the UPR filled with SA/ATH Hybrid demonstrates higher thermal stability when compared to the composites filled with only ATH or SA. Furthermore, the SA/ATH Hybrid also provides sufficient flame retardancy in UPR as evaluate by ASTM D635-14 (UL–94) horizontal burning test. For mechanical properties, a sharp increase in tensile strength was observed for UPR filled with ATH or SA while the addition of SA/ATH Hybrid Filler only slightly increases the tensile properties of UPR due to particle agglomerations and porosities.
Yew Wei Leong - One of the best experts on this subject based on the ideXlab platform.
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Effect of chemical treatments on the mechanical, flow, and morphological properties of talc‐ and kaolin‐filled polypropylene Hybrid composites
Journal of Applied Polymer Science, 2008Co-Authors: M. Abu Bakar, Yew Wei Leong, A Ariffin, Z. A. Mohd IshakAbstract:This study was performed with commer- cially available phenyl trimethoxysilane (PTMS) and neoal- koxytitanate (i.e., neopentyl(diallyl)oxytri(dioctyl)phosphato titanate (LICA 12)) as coupling agents. PTMS and LICA 12 were used to treat talc and kaolin to compare their effects with untreated Fillers upon incorporation into polypropyl- ene (PP). Single-Filler PP composites (containing either talc or kaolin) and Hybrid-Filler composites (containing a mix of both talc and kaolin) were compounded in a twin-screw ex- truder and subsequently injection-molded into dumbbells. The incorporation of PTMS and LICA 12 slightly decreased the tensile and flexural properties in terms of modulus and strength but increased the elongation at break for both sin- gle-Filler and Hybrid-Filler composites. There was also a sig- nificant improvement in the impact strength of the composites, particularly those treated with LICA 12. The Hybrid composites, through the synergistic coalescence of positive characteristics from talc and kaolin with the aid from chemical treatment provided an economically advan- tageous material with mechanical properties comparable to those of the single-Filler-filled PP composites. Further investigations on flow and morphological properties were also done to correlate the mechanical properties of the single- and Hybrid-Filler-filled PP composites. V C 2008 Wiley
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Filler treatment effects on the weathering of talc-, CaCO3- and kaolin-filled polypropylene Hybrid composites
Composite Interfaces, 2006Co-Authors: Yew Wei Leong, M. Abu Bakar, Z. A. Mohd Ishak, Azlan AriffinAbstract:Talc, calcium carbonate (CaCO3), and kaolin hold considerable promise in the development of polymer composites for good mechanical properties and stability. Comparative studies on the usage of these minerals as single Fillers in polypropylene (PP) have shown varying degrees of reinforcement due to their differences in terms of particle geometry, surface energy and affinity towards the matrix polymer. In this study, comparisons were made in terms of mechanical, thermal and weatherability properties between Hybrid-Filler PP composites (i.e. PP filled with either talc–CaCO3 or talc–kaolin Hybrid Filler combinations), with particular attention directed towards the effect of surface modification of the Fillers. The talc/CaCO3 Hybrid composites have shown exceptional performance in terms of flexural and impact properties. The contribution of talc in the talc–kaolin Hybrid composite system has been significant in terms of enhancing the overall tensile and flexural properties. The ability of silane and titanate c...
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characterization of talc calcium carbonate filled polypropylene Hybrid composites weathered in a natural environment
Polymer Degradation and Stability, 2004Co-Authors: Yew Wei Leong, Abu M Bakar, Z Mohd A Ishak, A AriffinAbstract:Abstract Two kinds of composites, namely single-Filler polypropylene (PP) composites (containing either talc or calcium carbonate) and Hybrid-Filler PP composites (consist of a mixture of talc and calcium carbonate) were injection moulded into dumbbells. These specimens were subjected to natural weathering i.e. tropical climate in Penang, Malaysia for 6 months. After 6 months of exposure, the mechanical properties of single-Filler PP composites deteriorated due to severe physical and chemical degradation. However, the Hybrid-Filler PP composites were found to show better retention in mechanical properties albeit having undergone some degree of surface-degradation as well. It is believed that the ‘Hybridization’ effect has successfully increased the resistance of the Hybrid composite to severe environmental degradation to the extent that it protects the internal structure of the composite from environmental damage, even though the surface of the composite gets severely degraded. Surface treatment of Fillers was also found to be able to aid in the retention of the composites’ mechanical properties.
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Characterization of talc/calcium carbonate filled polypropylene Hybrid composites weathered in a natural environment
Polymer Degradation and Stability, 2004Co-Authors: Yew Wei Leong, M. Abu Bakar, Z. A. Mohd Ishak, A AriffinAbstract:Abstract Two kinds of composites, namely single-Filler polypropylene (PP) composites (containing either talc or calcium carbonate) and Hybrid-Filler PP composites (consist of a mixture of talc and calcium carbonate) were injection moulded into dumbbells. These specimens were subjected to natural weathering i.e. tropical climate in Penang, Malaysia for 6 months. After 6 months of exposure, the mechanical properties of single-Filler PP composites deteriorated due to severe physical and chemical degradation. However, the Hybrid-Filler PP composites were found to show better retention in mechanical properties albeit having undergone some degree of surface-degradation as well. It is believed that the ‘Hybridization’ effect has successfully increased the resistance of the Hybrid composite to severe environmental degradation to the extent that it protects the internal structure of the composite from environmental damage, even though the surface of the composite gets severely degraded. Surface treatment of Fillers was also found to be able to aid in the retention of the composites’ mechanical properties.
Muhamad Azizi Mat Yajid - One of the best experts on this subject based on the ideXlab platform.
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Effect of silica aerogel – Aluminium trihydroxide Hybrid Filler on the physio-mechanical and thermal decomposition behaviour of unsaturated polyester resin composite
Polymer Degradation and Stability, 2020Co-Authors: Zulhelmi Alif Abdul Halim, Muhamad Azizi Mat Yajid, Fajar Anugrah Nurhadi, Norhayati Ahmad, Halimaton HamdanAbstract:Abstract Aluminum trihydroxide (ATH) is an eco-friendly and economical additive used in polymers as a flame retardant (FR), but its low thermal stability has become an important issue that is critical in determining the fire protection and thermal stability of the composites. The present study was an attempt to enhance the thermal stability of ATH to some extent by combining it with nano-porous silica known as silica aerogel (SA) as a Hybrid FR Filler in unsaturated polyester resin (UPR). Ultra-low density SA (0.07 g/cm3) in the form of fine particles was extracted from renewable resources (i.e. rice husk), through a sol-gel process, surface modification and dried at atmospheric pressure. From our findings, it is found that the addition of the Hybrid Filler into UPR results in interesting properties such as lightweight, flame retardancy and enhanced thermal stability whose properties cannot be gained by composites with single Filler. From thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and gas analysis using Fourier transform infrared spectroscopy (FTIR); it is evident that doping the ATH with SA helps to improve the thermal stability via synergistic effect, by extending the ATH decomposition process over a wider temperature range. As a result, the UPR filled with SA/ATH Hybrid demonstrates higher thermal stability when compared to the composites filled with only ATH or SA. Furthermore, the SA/ATH Hybrid also provides sufficient flame retardancy in UPR as evaluate by ASTM D635-14 (UL–94) horizontal burning test. For mechanical properties, a sharp increase in tensile strength was observed for UPR filled with ATH or SA while the addition of SA/ATH Hybrid Filler only slightly increases the tensile properties of UPR due to particle agglomerations and porosities.
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effect of silica aerogel aluminium trihydroxide Hybrid Filler on the physio mechanical and thermal decomposition behaviour of unsaturated polyester resin composite
Polymer Degradation and Stability, 2020Co-Authors: Zulhelmi Alif Abdul Halim, Muhamad Azizi Mat Yajid, Fajar Anugrah Nurhadi, Norhayati Ahmad, Halimaton HamdanAbstract:Abstract Aluminum trihydroxide (ATH) is an eco-friendly and economical additive used in polymers as a flame retardant (FR), but its low thermal stability has become an important issue that is critical in determining the fire protection and thermal stability of the composites. The present study was an attempt to enhance the thermal stability of ATH to some extent by combining it with nano-porous silica known as silica aerogel (SA) as a Hybrid FR Filler in unsaturated polyester resin (UPR). Ultra-low density SA (0.07 g/cm3) in the form of fine particles was extracted from renewable resources (i.e. rice husk), through a sol-gel process, surface modification and dried at atmospheric pressure. From our findings, it is found that the addition of the Hybrid Filler into UPR results in interesting properties such as lightweight, flame retardancy and enhanced thermal stability whose properties cannot be gained by composites with single Filler. From thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and gas analysis using Fourier transform infrared spectroscopy (FTIR); it is evident that doping the ATH with SA helps to improve the thermal stability via synergistic effect, by extending the ATH decomposition process over a wider temperature range. As a result, the UPR filled with SA/ATH Hybrid demonstrates higher thermal stability when compared to the composites filled with only ATH or SA. Furthermore, the SA/ATH Hybrid also provides sufficient flame retardancy in UPR as evaluate by ASTM D635-14 (UL–94) horizontal burning test. For mechanical properties, a sharp increase in tensile strength was observed for UPR filled with ATH or SA while the addition of SA/ATH Hybrid Filler only slightly increases the tensile properties of UPR due to particle agglomerations and porosities.
