Correlation of mechanical and tribological properties of organosilane modified cenosphere filled high density polyethylene

Chand, Navin; Sharma, Prabhat Kumar; Fahim, Mohammad

doi:10.1016/j.msea.2010.06.022

Cited by 59 publications

(35 citation statements)

References 13 publications

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“…The assessment of pozzolanic activity is measured by direct methods as well as indirect methods. [9][10][11] The direct method involves Frattini test, XRD and TGA. In the Frattini test, CH consumption by the active pozzolana during the reaction is measured using titration method.…”

Section: Introductionmentioning

confidence: 99%

Assessment of pozzolanic activity of thermally activated clay and its impact on strength development in cement mortar

2015

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Natural kaolinitic clay from Khyber Pakhtoonkhwa, Pakistan was thermally activated at different temperatures and its pozzolanic behavior was studied. Thermal activation was carried out in an electrical muffle furnace at 200, 400, 600 and 800 C for two hours. The index of order/disorder and structural changes with thermal treatment were studied using X-ray diffraction (XRD) and Fourier transformed infra-red spectrometry (FTIR). The pozzolanic behavior of all the samples was evaluated using an electrical conductivity test, lime consumption (LC) test and strength activity index (SAI). This study confirmed that natural kaolinitic clay other than pure kaolinite can act as an interesting pozzolana when thermally activated. The best temperature for thermal treatment of natural kaolinitic clay is 800 C, while the permissible replacement in mortar is 25% as confirmed from the compressive strength measurement.

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Section: Introductionmentioning

confidence: 99%

Assessment of pozzolanic activity of thermally activated clay and its impact on strength development in cement mortar

2015

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“…It is clear from the figure that the impact strength of the cured epoxy compounds has a direct correlation with the wear resistance. Chand et al (2010) reported a similar relationship between impact strength and wear resistance for other polymeric composites. The enhancement of the impact strength in comparison to the TETA cured network may be attributed to the long aliphatic side chain of the phenalkamine.…”

Section: Resultsmentioning

confidence: 55%

“…A higher u*u value (i.e., a lower 1/u*u) indicates an epoxy with better wear resistance because of the high energy absorption behavior (Lancaster et al 1968). The most likely explanation for the increase in wear resistance with the higher content of phenalkamine resin hardener is the greater elongation and better particle-to-particle adhesion when compared to traditional polyamine-cured epoxy resins (Chand et al 2010). The tribological conditions of the compounds first showed micro-cracks developing, then crack propagation to join other cracks, followed by larger groove formation.…”

Section: Resultsmentioning

confidence: 99%

Effect of Alkyl Phenol from Cashew Nutshell Liquid on Mechanical and Dry Sliding Wear Behavior of Epoxy Resin

et al. 2015

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A phenalkamine made from the reaction of alkyl phenol from cashew nutshell liquid (CSNL) and polyamine was added at three different weight percentages (30%, 40%, and 50%) as a diglycidyl ether of bisphenol A (DGEBA) epoxy hardener. This curing agent was compared to a traditional polyamine epoxy hardener. It was observed that an increase in phenalkamine concentration resulted in considerable improvement to impact strength and elongation, which ultimately translated to better wear resistance of the cured epoxy compound. Lancaster-Ratner correlations between mechanical and wear resistance properties were found to be linear. Optical microscope observations were used to understand the wear mechanisms of the cured epoxy materials.

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“…Prior to the surface treatment, cenospheres were dried in an oven at 50 • C for 20 min to remove the absorbed moisture. Cenospheres were treated by using octadecyltrichloro (ODTC) silane using a detailed process outlined elsewhere [7]. A very low concentration of silane was maintained to treat the cenospheres, i.e., 0.4 wt% of silane was mixed with cosolvent of methanol and water.…”

Section: Surface Treatment Of Cenospherementioning

confidence: 99%

“…Cenosphere as filler has been added in HDPE. Chand et al [7] reported abrasive wear properties of cenospheres filled HDPE. Deepthi et al [8] also report mechanical and thermal characteristics of HDPE-cenospheres composites.…”

Section: Introductionmentioning

confidence: 99%

Abrasive Wear Behavior of LDPE Filled with Silane Treated Flyash Cenospheres

Chand

Sharma

Fahim

2011

Composite Interfaces

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Lightweight, high mechanical strength insulating materials exhibiting high resistance to corrosion, solvents and abrasive wear are desired for wire and cable insulation as well as protection. Polyethylenes are generally used for such applications owing to their good electrical insulation properties and being inert to solvents at room temperature. However, their abrasion resistance is quite poor. Hence, in the present work, an attempt has been made to improve the abrasive wear resistance of low-density polyethylene (LDPE) by incorporating hollow microspheres, known as cenospheres, in the base polymer to form composites. These cenospheres are obtained from flyash particles, a thermal power plant waste, and do not tend to increase the weight of the polymer composite when used as a filler. The composites were developed by changing the weight fraction of untreated as well as silane treated cenospheres to the extent of 5 wt%. Tribological characterization of these composites was done in abrasive wear mode by varying the operating parameters, such as speed and sliding distance against silicon carbide paper. It was found that 10 wt% silane treated cenosphere filled LDPE composite showed the maximum wear resistance (∼×10 −11 m 3 /N m) among the six composites. However, a further increase in filler concentration decreased the wear resistance. The improvement in wear resistance was supported by scanning electron microscopy and attributed to the strong interaction between silane treated cenosphere and LDPE molecules which resisted the elongation and shearing of polymer chains by the abrasive grits.

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Correlation of mechanical and tribological properties of organosilane modified cenosphere filled high density polyethylene

Cited by 59 publications

References 13 publications

Assessment of pozzolanic activity of thermally activated clay and its impact on strength development in cement mortar

Assessment of pozzolanic activity of thermally activated clay and its impact on strength development in cement mortar

Effect of Alkyl Phenol from Cashew Nutshell Liquid on Mechanical and Dry Sliding Wear Behavior of Epoxy Resin

Abrasive Wear Behavior of LDPE Filled with Silane Treated Flyash Cenospheres

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