Estimation of Concentration of Particles in Polymerizing Fluid during Centrifugal Casting of Functionally Graded Polymer Composites
IR@AMPRI: CSIR-Advanced Materials and Processes Research Institute, Bhopal
View Archive Info| Field | Value | |
| Title |
Estimation of Concentration of Particles in Polymerizing Fluid during Centrifugal Casting of Functionally Graded Polymer Composites
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| Creator |
Dr., S.A.R. Hashmi
Dr., U.K. Dwivedi |
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| Subject |
Metal Matrix Composites
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| Description |
The concentration of uniformly distributed particles in a fluid changes with time in the direction of gravitational or
centrifugal force to form a concentration gradient. The change in the concentration is an outcome of velocity variation of particles in a fluid. A modified equation for terminal velocity, vm of particles in polymerizing-fluid under centrifugal force is proposed to estimate the changes in the volume fraction of particles in the graded composites. The proposed equation introduces the effect of cure kinetics of polymer and its effect on particle movement in the model that was based on the modified Stoke_s law, considering the parameters related to particle hindrance, centrifugal force, particle dimensions, viscosity variation etc. The model predictions of concentration changes at the different locations of samples were compared with calcium carbonate filled polysulphide-modified-epoxy graded composites prepared by centrifugal casting.. The effect of particle size, delayed curing rate of matrix were explored. The simulated results are in good agreement with those of experiments
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| Date |
2007
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| Type |
Article
PeerReviewed |
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| Identifier |
Dr., S.A.R. Hashmi and Dr., U.K. Dwivedi (2007) Estimation of Concentration of Particles in Polymerizing Fluid during Centrifugal Casting of Functionally Graded Polymer Composites. Journal of Polymer Research, 14. pp. 75-81.
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| Relation |
http://ampri.csircentral.net/423/
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