The Experts below are selected from a list of 156 Experts worldwide ranked by ideXlab platform
G Rajendran - One of the best experts on this subject based on the ideXlab platform.
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rice bran oil as a novel Compounding ingredient in sulphur vulcanization of natural Rubber
European Polymer Journal, 1995Co-Authors: A P Kuriakose, G RajendranAbstract:Abstract Raw rice bran oil contains free fatty acids, unsaponifiable matter, phosphatides and wax as the main constituents. The wax portion of the oil contains phenols such as tocopherol, oryzanol etc. in reasonable quantity. A higher fatty acid like stearic acid and a processing oil are generally added during the Compounding of Rubber as a co-activator and a processing aid respectively. Phenol derivatives are used in Rubber Compounding as antioxidants. In the present study the above Compounding ingredients were replaced by raw rice bran oil in carbon black and silica filled systems in NR Compounding and the results obtained are compared with reference systems. In sulphur accelerated system of NR presently studied, it was found that raw rice bran oil can substitute for the process oil, antioxidant and fatty acid without much affecting the cure characteristics of the mixes and physical properties of the vulcanizates. Apart from the low cost of the product, it will be helpful in also saving energy during mixing. The high free fatty acid content and non-toxic nature of this non-edible natural oil could therefore be an added advantage in the Rubber product manufacturing industry.
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use of rice bran oil in the Compounding of styrene butadiene Rubber
Journal of Materials Science, 1995Co-Authors: A P Kuriakose, G RajendranAbstract:The Compounding of Rubber involves mixing of activator, co-activator, accelerator, antioxidant, filler, processing aid, vulcanizing agent, etc., to produce the Rubber. The replacement of three of the above ingredients by rice-bran oil in the Compounding of styrene butadiene Rubber has been investigated. The higher fatty acids and phenols present in rice-bran oil act as co-activator and antioxidant, respectively, in the vulcanization process. Addition of this oil together with fillers, also meets the requirement of processing aid. The results obtained were compared with those obtained with reference mixes containing stearic acid, styrenated phenol and aromatic/napthenic oil in carbon-black and silica-filled systems. Evaluation of the cure characteristics of the mixes indicates that substitution of the above ingredients with rice-bran oil did not affect the cure properties. Vulcanizates containing the rice-bran oil also showed physical properties comparable to the reference mixes. Processability studies using a plasticorder also showed similar trends. Considering the fact that rice-bran oil is cheaper than other conventional oils used as processing aids in Rubber Compounding, this non-toxic natural oil can be advantageously used in Rubber product manufacture.
A P Kuriakose - One of the best experts on this subject based on the ideXlab platform.
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rice bran oil as a novel Compounding ingredient in sulphur vulcanization of natural Rubber
European Polymer Journal, 1995Co-Authors: A P Kuriakose, G RajendranAbstract:Abstract Raw rice bran oil contains free fatty acids, unsaponifiable matter, phosphatides and wax as the main constituents. The wax portion of the oil contains phenols such as tocopherol, oryzanol etc. in reasonable quantity. A higher fatty acid like stearic acid and a processing oil are generally added during the Compounding of Rubber as a co-activator and a processing aid respectively. Phenol derivatives are used in Rubber Compounding as antioxidants. In the present study the above Compounding ingredients were replaced by raw rice bran oil in carbon black and silica filled systems in NR Compounding and the results obtained are compared with reference systems. In sulphur accelerated system of NR presently studied, it was found that raw rice bran oil can substitute for the process oil, antioxidant and fatty acid without much affecting the cure characteristics of the mixes and physical properties of the vulcanizates. Apart from the low cost of the product, it will be helpful in also saving energy during mixing. The high free fatty acid content and non-toxic nature of this non-edible natural oil could therefore be an added advantage in the Rubber product manufacturing industry.
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use of rice bran oil in the Compounding of styrene butadiene Rubber
Journal of Materials Science, 1995Co-Authors: A P Kuriakose, G RajendranAbstract:The Compounding of Rubber involves mixing of activator, co-activator, accelerator, antioxidant, filler, processing aid, vulcanizing agent, etc., to produce the Rubber. The replacement of three of the above ingredients by rice-bran oil in the Compounding of styrene butadiene Rubber has been investigated. The higher fatty acids and phenols present in rice-bran oil act as co-activator and antioxidant, respectively, in the vulcanization process. Addition of this oil together with fillers, also meets the requirement of processing aid. The results obtained were compared with those obtained with reference mixes containing stearic acid, styrenated phenol and aromatic/napthenic oil in carbon-black and silica-filled systems. Evaluation of the cure characteristics of the mixes indicates that substitution of the above ingredients with rice-bran oil did not affect the cure properties. Vulcanizates containing the rice-bran oil also showed physical properties comparable to the reference mixes. Processability studies using a plasticorder also showed similar trends. Considering the fact that rice-bran oil is cheaper than other conventional oils used as processing aids in Rubber Compounding, this non-toxic natural oil can be advantageously used in Rubber product manufacture.
Shinyoung Kaang - One of the best experts on this subject based on the ideXlab platform.
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influence of thermal treatment of nano scaled silica on interfacial adhesion properties of the silica Rubber Compounding
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2005Co-Authors: Soojin Park, Sungyeol Jin, Shinyoung KaangAbstract:Abstract In this work, the effect of thermal treatment on crosslink density and adhesion properties of nano-scaled silica/Rubber Compounding are investigated. The chemical structures and surface properties of modified silicas are studied in terms of Fourier transform-IR (FT-IR), solid-state 29 Si-NMR spectroscopy, and surface free energy, respectively. Also, the mechanical interfacial properties of the silica/Rubber Compounding are determined by the crosslink density and tearing energy ( G IIIC ). As a result, it was found that the thermally treated silicas became hydrophobic in nature, due to the condensation of surface hydroxyls and the formation of siloxane bond. From which, the increase of the siloxane bond on the silica surfaces led to an improvement of the dispersion of silicas in a Rubber matrix, finally resulting in improving the tearing energy in a Compounding system.
J M Lopez - One of the best experts on this subject based on the ideXlab platform.
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carbon black recovery from waste tire pyrolysis by demineralization production and application in Rubber Compounding
Waste Management, 2019Co-Authors: Juan Daniel Martinez, Natalia Cardonauribe, R Murillo, Tomas Garcia, J M LopezAbstract:Abstract Pyrolysis offers the possibility to convert waste tires into liquid and gaseous fractions as well as a carbon-rich solid (CBp), which contains the original carbon black (CB) and the inorganic compounds used in tire manufacture. Whilst both liquid and gaseous fractions can be valorized without further processing, there is a general consensus that CBp needs to be improved before it can be considered a commercial product, seriously penalizing the pyrolysis process profitability. In this work, the CBp produced in a continuous pyrolysis process was demineralized (chemical leaching) with the aim of recovering the CB trapped into the CBp and thus, producing a standardized CB product for commercial purposes. The demineralization process was conducted by using cheap and common reagents (HCl and NaOH). In this sense, the acid treatment removed most of the mineral matter contained in the CBp and concentration was the main parameter controlling the demineralization process. An ash content of 4.9 wt% was obtained by using 60 min of soaking time, 60 °C of temperature, 10 mL/g of reagent/CBp ratio and HCl 4 M. The demineralized CBp (dCBp) showed a carbon content of 92.9 wt%, while the FRX analysis indicated that SiO2 is the major component into the ash. The BET surface area was 76.3 m2/g, and textural characterizations (SEM/EDX and TEM) revealed that dCBp is composed by primary particles lower than 100 nm. Although dCBp showed a low structure, the surface chemistry was rich in surface acidic groups. Finally, dCBp was used in Styrene Butadiene Rubber (SBR) Compounding, probing its technical feasibility as substitute of commercial CB N550.
Soojin Park - One of the best experts on this subject based on the ideXlab platform.
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influence of thermal treatment of nano scaled silica on interfacial adhesion properties of the silica Rubber Compounding
Materials Science and Engineering A-structural Materials Properties Microstructure and Processing, 2005Co-Authors: Soojin Park, Sungyeol Jin, Shinyoung KaangAbstract:Abstract In this work, the effect of thermal treatment on crosslink density and adhesion properties of nano-scaled silica/Rubber Compounding are investigated. The chemical structures and surface properties of modified silicas are studied in terms of Fourier transform-IR (FT-IR), solid-state 29 Si-NMR spectroscopy, and surface free energy, respectively. Also, the mechanical interfacial properties of the silica/Rubber Compounding are determined by the crosslink density and tearing energy ( G IIIC ). As a result, it was found that the thermally treated silicas became hydrophobic in nature, due to the condensation of surface hydroxyls and the formation of siloxane bond. From which, the increase of the siloxane bond on the silica surfaces led to an improvement of the dispersion of silicas in a Rubber matrix, finally resulting in improving the tearing energy in a Compounding system.
