The authors present a method of preparing an aluminum shoe mold by a novel process called vacuum sealed casting. It was determined that the prototype shoe should be made of a resin, and then the mold should be made of aluminum. A composite resin was chosen such that the thermal conductivity, dimension accuracy, and wear resistance were greater than those of the pristine resin. The use of the aluminum mold ...
High-density polyethylene-talc-carbon black composites were prepared with varying amounts of talc to determine its effect on the thermo-physical properties of the composites. Carbon black was added in a content of 3.5 wt. % because it was previously determined that the mechanical properties of the composites were depreciated at higher loadings. It was found that the addition of talc enhanced the mechanical properties, as well as the thermal conductivity, and thermal diffusivity. The ...
In this work, the authors tested five organic phase change materials for thermophysical properties (density, heat capacity, and thermal conductivity) in order to determine the best path to prediction (BPP) for the thermal diffusivity of organic PCMs in the liquid phase. Separate BPPs were determined for alkanes and unsaturated acids. The identified BPPs were then tested on a variety of materials and the estimated thermal diffusivity was within 15% for all ...
The authors have presented a method for the addition of alumina nanoparticles and polypropylene fibers to a poly(methyl methacrylate) (PMMA) matrix. This composite material shows promise for use as denture base material. The composite material was subsequently subjected to a number of tests to investigate its structural and thermal properties. It was found that the composites showed an improvement in impact strength, and one of the two composites tested ...
A thermo-mechanical property model for composites subjected to fire loading conditions was developed for the purpose of reducing testing time for prediction of the performance of new materials. The thermal diffusivity and conductivity were used to describe the thermal property evolution. A micro-mechanics based model was developed based on visco-elastic foundations for the prediction of rupture behaviour when the samples are compressed, and iso-thermal behaviour. The model was successful in ...
