DESIGN OF A LABORATORY POLYURETHANE FOAM RECYCLING MACHINE

with the aid of Auto Cad and Inventor software in such way that it can be operated both manually and electrically-in case of power outage. The machine was made up of a mixing chamber which consists of the hopper and mixing drum, and the mixing chamber was sustained by the machine frame. The machine has a compression chamber which consists of the presser, screw and moulding box. The heating chamber of the machine consists of the pressure pot, pressure hoes to enable passage of steam from the pressure pot into the moulding box. Design calculations of the vessels were done with appropriate machine design formula. The assembled parts was also coupled are presented. The design are dimensioned in millimeters (mm), except otherwise stated. Key words: machine, pulley, moulding, mixing chamber, hopper

Abrasive Wear Resistance, Mechanical Behaviour, Water Transport Phenomena and Biocorrosion of Epoxy/Femora Biocomposites

Of late, some biological wastes have proven to be reliable candidates in promoting the economic viability of developing polymeric composites. However, the field-proven reliability prediction of such materials during service life requires extensive characterization. In this research, the influence of 75 µm bovine femur ash subjected to two-step calcination process on spectroscopic, wear, mechanical, water absorbent and biocorrosive properties of epoxy/femur waste biocomposites was investigated. The test materials were developed via open mould casting and subjected to preferred characterizations apropos of the abovementioned properties. Elemental constituents of the biocomposites and the ash were determined by energy dispersive x-ray spectroscopy with scanning electron microscopy and x-ray fluorescence spectroscopy, respectively. The investigated properties were studied dependent on predetermined volume fractions of the ash in epoxy matrix. Observations from the experimental results revealed that properties’ enhancement was not specific to either low or high volume fraction of the ash in epoxy. Different properties were enhanced at different volume fractions of the ash. Nonetheless, one biocomposite approaching intermediate volume faction of the ash used, exhibited optimum combination of the investigated properties. This is a clear indication that bovine femur waste can be successfully exploited for engineering applications, especially in the areas of materials development

DESIGN OF A LABORATORY POLYURETHANE FOAM RECYCLING MACHINE

This work reports the design of a laboratory polyurethane recycling machine. This machine was designed with the aid of Auto Cad and Inventor software in such way that it can be operated both manually and electrically-in case of power outage. The machine was made up of a mixing chamber which consists of the hopper and mixing drum, and the mixing chamber was sustained by the machine frame. The machine has a compression chamber which consists of the presser, screw and moulding box. The heating chamber of the machine consists of the pressure pot, pressure hoes to enable passage of steam from the pressure pot into the moulding box. Design calculations of the vessels were done with appropriate machine design formula. The assembled parts was also coupled are presented. The design are dimensioned in millimeters (mm), except otherwise stated. Key words: machine, pulley, moulding, mixing chamber, hopper