The Experts below are selected from a list of 161052 Experts worldwide ranked by ideXlab platform
Noorunnisa P Khanam - One of the best experts on this subject based on the ideXlab platform.
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tensile flexural and Chemical Resistance properties of sisal fibre reinforced polymer composites effect of fibre surface treatment
Journal of Polymers and The Environment, 2011Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, H Abdul P S Khalil, Venkata S NaiduAbstract:In this study, effect of fibre surface treatment on tensile, flexural and Chemical Resistance properties were studied for sisal fibre reinforced composites. Natural ligno cellulosic sisal fibre reinforced composites were prepared by different surface treatments by hand lay-up method. Fibre surface treatments were carried out to produce good interface between the fibre and the matrix to improve the mechanical properties. Fibre surface treatments were done by boiled the sisal fibres in different % of NaOH and treated the fibres in different % of NaOH, treated in acetic acid and methanol. Unsaturated polyester resin was used as the matrix for preparing the composites. For comparison, these properties for untreated sisal fibre reinforced composites were also studied. From the results it was observed that 18% aqueous NaOH boiled sisal fibre reinforced composites have higher tensile, flexural properties than other composites. Untreated sisal fibre composites show lower properties than treated composites. Chemical Resistance properties indicate that all sisal fibre reinforced composites are Resistance to all Chemicals except carbon tetra chloride. The tests are carried out as per the ASTM standards.
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Chemical Resistance void content and tensile properties of oil palm jute fibre reinforced polymer hybrid composites
Materials & Design, 2011Co-Authors: Mohammad Jawaid, H Abdul P S Khalil, Abu A Bakar, Noorunnisa P KhanamAbstract:Tri layer hybrid composites of oil palm empty fruit bunches (EFB) and jute fibres was prepared by keeping oil palm EFB as skin material and jute as the core material and vice versa. The Chemical Resistance, void content and tensile properties of oil palm EFB/Jute composites was investigated with reference to the relative weight of oil palm EFB/Jute, i.e. 4:1, the fibre loading was optimized and different layering pattern were investigated. It is found from the Chemical Resistance test that all the composites are resistant to various Chemicals. It was observed that marked reduction in void content of hybrid composites in different layering pattern. From the different layering pattern, the tensile properties were slightly higher for the composite having jute as skin and oil palm EFB as core material. Scanning electron microscopy (SEM) was used to study tensile fracture surfaces of different composites.
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sisal carbon fibre reinforced hybrid composites tensile flexural and Chemical Resistance properties
Journal of Polymers and The Environment, 2010Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, H Abdul P S Khalil, Mohammad Jawaid, Surya C Narayana, Venkata S NaiduAbstract:The variation of mechanical properties such as tensile and flexural properties of randomly oriented unsaturated polyester based sisal/carbon fibre reinforced hybrid composites with different fibre weight ratios have been studied. The Chemical Resistance test of these hybrid composites to various solvents, acids and alkalies were studied. The effect of NaOH treatment of sisal fibres on the tensile, flexural and Chemical Resistance properties of these sisal/carbon hybrid composites has also been studied. The hybrid composites showed an increase in tensile and flexural properties with increase in the carbon fibre loading. The tensile properties and flexural properties of these hybrid composites have been found to be higher than that of the matrix. Significant improvement in tensile properties and flexural properties of the sisal/carbon hybrid composites has been observed by alkali treatment. The Chemical Resistance test results showed that these untreated and alkali treated hybrid composites are Resistance to all Chemicals except carbon tetra chloride. Hand lay-up technique was used for making the composites and tests are carried out by using ASTM methods.
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Chemical Resistance studies of silk sisal fiber reinforced unsaturated polyester based hybrid composites
Journal of Reinforced Plastics and Composites, 2010Co-Authors: K Raghu, Noorunnisa P Khanam, Venkata S NaiduAbstract:The natural fiber environmental friendly composites of untreated and alkali treated silk-sisal unsaturated polyester-based hybrid composites were prepared by using hand lay-up technique. The fiber length was taken as 2 cm and the sisal fibers were treated with 2% NaOH. The Chemical Resistance of the treated and untreated silk/sisal hybrid composites to various acids, alkalis, and solvents was studied. The Chemical Resistance tests of these hybrid composites were performed in order to find out whether these composites can be used for manufacturing products that are resistant to Chemicals.
Venkata S Naidu - One of the best experts on this subject based on the ideXlab platform.
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tensile flexural and Chemical Resistance properties of sisal fibre reinforced polymer composites effect of fibre surface treatment
Journal of Polymers and The Environment, 2011Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, H Abdul P S Khalil, Venkata S NaiduAbstract:In this study, effect of fibre surface treatment on tensile, flexural and Chemical Resistance properties were studied for sisal fibre reinforced composites. Natural ligno cellulosic sisal fibre reinforced composites were prepared by different surface treatments by hand lay-up method. Fibre surface treatments were carried out to produce good interface between the fibre and the matrix to improve the mechanical properties. Fibre surface treatments were done by boiled the sisal fibres in different % of NaOH and treated the fibres in different % of NaOH, treated in acetic acid and methanol. Unsaturated polyester resin was used as the matrix for preparing the composites. For comparison, these properties for untreated sisal fibre reinforced composites were also studied. From the results it was observed that 18% aqueous NaOH boiled sisal fibre reinforced composites have higher tensile, flexural properties than other composites. Untreated sisal fibre composites show lower properties than treated composites. Chemical Resistance properties indicate that all sisal fibre reinforced composites are Resistance to all Chemicals except carbon tetra chloride. The tests are carried out as per the ASTM standards.
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frictional coefficient hardness impact strength and Chemical Resistance of reinforced sisal glass fiber epoxy hybrid composites
Journal of Composite Materials, 2010Co-Authors: Ashok M Kumar, Ramachandra G Reddy, Venkata S Naidu, Siva Y Bharathi, Naga Prasad V NaiduAbstract:In this article, the epoxy-based hybrid composites were developed by combining the sisal and glass fibers into epoxy matrix. Hardness, impact strength, frictional coefficient, and Chemical Resistance of hybrid composites with and without alkali treatments were studied. Variation of the aforementioned mechanical proper- ties and Chemical Resistance was studied with different fiber lengths such as 1, 2, and 3 cm. A 9 vol.% of the sisal and glass fibers was reinforced into the epoxy matrix. The aforementioned mechanical properties were optimally improved at 2-cm fiber length when compared with 1 and 3 cm fiber lengths. Chemical Resistance was also significantly improved for all Chemicals except sodium carbonates and toluene.
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sisal carbon fibre reinforced hybrid composites tensile flexural and Chemical Resistance properties
Journal of Polymers and The Environment, 2010Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, H Abdul P S Khalil, Mohammad Jawaid, Surya C Narayana, Venkata S NaiduAbstract:The variation of mechanical properties such as tensile and flexural properties of randomly oriented unsaturated polyester based sisal/carbon fibre reinforced hybrid composites with different fibre weight ratios have been studied. The Chemical Resistance test of these hybrid composites to various solvents, acids and alkalies were studied. The effect of NaOH treatment of sisal fibres on the tensile, flexural and Chemical Resistance properties of these sisal/carbon hybrid composites has also been studied. The hybrid composites showed an increase in tensile and flexural properties with increase in the carbon fibre loading. The tensile properties and flexural properties of these hybrid composites have been found to be higher than that of the matrix. Significant improvement in tensile properties and flexural properties of the sisal/carbon hybrid composites has been observed by alkali treatment. The Chemical Resistance test results showed that these untreated and alkali treated hybrid composites are Resistance to all Chemicals except carbon tetra chloride. Hand lay-up technique was used for making the composites and tests are carried out by using ASTM methods.
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Chemical Resistance studies of silk sisal fiber reinforced unsaturated polyester based hybrid composites
Journal of Reinforced Plastics and Composites, 2010Co-Authors: K Raghu, Noorunnisa P Khanam, Venkata S NaiduAbstract:The natural fiber environmental friendly composites of untreated and alkali treated silk-sisal unsaturated polyester-based hybrid composites were prepared by using hand lay-up technique. The fiber length was taken as 2 cm and the sisal fibers were treated with 2% NaOH. The Chemical Resistance of the treated and untreated silk/sisal hybrid composites to various acids, alkalis, and solvents was studied. The Chemical Resistance tests of these hybrid composites were performed in order to find out whether these composites can be used for manufacturing products that are resistant to Chemicals.
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Chemical Resistance of sisal glass reinforced unsaturated polyester hybrid composites
Journal of Reinforced Plastics and Composites, 2007Co-Authors: K Joh, Venkata S NaiduAbstract:The unsaturated polyester resin based sisal/glass hybrid composites were developed using the hand lay-up technique. Chemical Resistance tests of these hybrid composites were performed in order to probe whether these composites can be used for making articles that are resistant to Chemicals. The hybrid samples and the matrix have been tested for various acids, alkalis, and solvents. It is observed from the results that the developed hybrid composites are resistant to all the tested Chemicals except carbon tetrachloride.
T Valente - One of the best experts on this subject based on the ideXlab platform.
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plasma sprayed glass ceramic coatings on ceramic tiles microstructure Chemical Resistance and mechanical properties
Journal of The European Ceramic Society, 2005Co-Authors: Giovanni Olelli, Valeria Cannillo, Luca Lusvarghi, Tiziano Manfredini, Cristina Siligardi, C Artuli, Alessio Loreto, T ValenteAbstract:Abstract This article reports the characterisation and optimisation of glass-ceramic coatings plasma-sprayed on traditional ceramic substrates, dealing with microstructures, Chemical Resistance, and superficial mechanical properties. A CaO–ZrO2–SiO2 (CZS) frit, capable of complete crystallization after proper thermal treatment, has been employed: due to its refractory nature, its firing temperature in a traditional process would be unbearable for common substrates. The frit was plasma-sprayed onto ceramic tiles and a post-process thermal treatment has been developed in order to sinter and crystallize the coating, employing much lower temperatures than a traditional ceramic firing cycle. The microstructure of both as-sprayed and treated coatings has been evaluated with SEM and EDS, acid Resistance tests have been performed. Vickers microhardness, superficial fracture toughness, deep abrasion Resistance, elastic modulus and coating adhesion have been evaluated. Unglazed stoneware and an industrial glaze were also tested for comparison and an experiment was made to produce a CZS-based glaze to ascertain the inadequacy of traditional firing. As-sprayed coatings have a typical plasma-spraying defective microstructure, but a thermal treatment with 30′ isotherm at 850 °C plus 15′ isotherm at 1050 °C allows good densification, excellent adhesion and complete crystallization, with formation of wollastonite-2M and many small Ca2ZrSi4O12 grains. Thus, the coating outperforms stoneware by 50% in abrasion Resistance, possessing higher fracture toughness, thanks to the continuous crack deflections due to the numerous crystals. Fracture toughness appears to be the property most correlated to abrasion Resistance, because brittle fracture is the dominant abrasion mechanism. Hardness and elastic modulus reflect quite well the coating inner cohesion. Treated coatings porosity is lower than industrial glazes and stoneware.
H Abdul P S Khalil - One of the best experts on this subject based on the ideXlab platform.
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tensile flexural and Chemical Resistance properties of sisal fibre reinforced polymer composites effect of fibre surface treatment
Journal of Polymers and The Environment, 2011Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, H Abdul P S Khalil, Venkata S NaiduAbstract:In this study, effect of fibre surface treatment on tensile, flexural and Chemical Resistance properties were studied for sisal fibre reinforced composites. Natural ligno cellulosic sisal fibre reinforced composites were prepared by different surface treatments by hand lay-up method. Fibre surface treatments were carried out to produce good interface between the fibre and the matrix to improve the mechanical properties. Fibre surface treatments were done by boiled the sisal fibres in different % of NaOH and treated the fibres in different % of NaOH, treated in acetic acid and methanol. Unsaturated polyester resin was used as the matrix for preparing the composites. For comparison, these properties for untreated sisal fibre reinforced composites were also studied. From the results it was observed that 18% aqueous NaOH boiled sisal fibre reinforced composites have higher tensile, flexural properties than other composites. Untreated sisal fibre composites show lower properties than treated composites. Chemical Resistance properties indicate that all sisal fibre reinforced composites are Resistance to all Chemicals except carbon tetra chloride. The tests are carried out as per the ASTM standards.
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Chemical Resistance void content and tensile properties of oil palm jute fibre reinforced polymer hybrid composites
Materials & Design, 2011Co-Authors: Mohammad Jawaid, H Abdul P S Khalil, Abu A Bakar, Noorunnisa P KhanamAbstract:Tri layer hybrid composites of oil palm empty fruit bunches (EFB) and jute fibres was prepared by keeping oil palm EFB as skin material and jute as the core material and vice versa. The Chemical Resistance, void content and tensile properties of oil palm EFB/Jute composites was investigated with reference to the relative weight of oil palm EFB/Jute, i.e. 4:1, the fibre loading was optimized and different layering pattern were investigated. It is found from the Chemical Resistance test that all the composites are resistant to various Chemicals. It was observed that marked reduction in void content of hybrid composites in different layering pattern. From the different layering pattern, the tensile properties were slightly higher for the composite having jute as skin and oil palm EFB as core material. Scanning electron microscopy (SEM) was used to study tensile fracture surfaces of different composites.
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sisal carbon fibre reinforced hybrid composites tensile flexural and Chemical Resistance properties
Journal of Polymers and The Environment, 2010Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, H Abdul P S Khalil, Mohammad Jawaid, Surya C Narayana, Venkata S NaiduAbstract:The variation of mechanical properties such as tensile and flexural properties of randomly oriented unsaturated polyester based sisal/carbon fibre reinforced hybrid composites with different fibre weight ratios have been studied. The Chemical Resistance test of these hybrid composites to various solvents, acids and alkalies were studied. The effect of NaOH treatment of sisal fibres on the tensile, flexural and Chemical Resistance properties of these sisal/carbon hybrid composites has also been studied. The hybrid composites showed an increase in tensile and flexural properties with increase in the carbon fibre loading. The tensile properties and flexural properties of these hybrid composites have been found to be higher than that of the matrix. Significant improvement in tensile properties and flexural properties of the sisal/carbon hybrid composites has been observed by alkali treatment. The Chemical Resistance test results showed that these untreated and alkali treated hybrid composites are Resistance to all Chemicals except carbon tetra chloride. Hand lay-up technique was used for making the composites and tests are carried out by using ASTM methods.
Mohammad Jawaid - One of the best experts on this subject based on the ideXlab platform.
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Chemical Resistance void content and tensile properties of oil palm jute fibre reinforced polymer hybrid composites
Materials & Design, 2011Co-Authors: Mohammad Jawaid, H Abdul P S Khalil, Abu A Bakar, Noorunnisa P KhanamAbstract:Tri layer hybrid composites of oil palm empty fruit bunches (EFB) and jute fibres was prepared by keeping oil palm EFB as skin material and jute as the core material and vice versa. The Chemical Resistance, void content and tensile properties of oil palm EFB/Jute composites was investigated with reference to the relative weight of oil palm EFB/Jute, i.e. 4:1, the fibre loading was optimized and different layering pattern were investigated. It is found from the Chemical Resistance test that all the composites are resistant to various Chemicals. It was observed that marked reduction in void content of hybrid composites in different layering pattern. From the different layering pattern, the tensile properties were slightly higher for the composite having jute as skin and oil palm EFB as core material. Scanning electron microscopy (SEM) was used to study tensile fracture surfaces of different composites.
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sisal carbon fibre reinforced hybrid composites tensile flexural and Chemical Resistance properties
Journal of Polymers and The Environment, 2010Co-Authors: Noorunnisa P Khanam, Ramachandra G Reddy, H Abdul P S Khalil, Mohammad Jawaid, Surya C Narayana, Venkata S NaiduAbstract:The variation of mechanical properties such as tensile and flexural properties of randomly oriented unsaturated polyester based sisal/carbon fibre reinforced hybrid composites with different fibre weight ratios have been studied. The Chemical Resistance test of these hybrid composites to various solvents, acids and alkalies were studied. The effect of NaOH treatment of sisal fibres on the tensile, flexural and Chemical Resistance properties of these sisal/carbon hybrid composites has also been studied. The hybrid composites showed an increase in tensile and flexural properties with increase in the carbon fibre loading. The tensile properties and flexural properties of these hybrid composites have been found to be higher than that of the matrix. Significant improvement in tensile properties and flexural properties of the sisal/carbon hybrid composites has been observed by alkali treatment. The Chemical Resistance test results showed that these untreated and alkali treated hybrid composites are Resistance to all Chemicals except carbon tetra chloride. Hand lay-up technique was used for making the composites and tests are carried out by using ASTM methods.
