Design, development and experimental validation of a lab-scale system for rapid rotational molding of functionally graded integral-skin cellular polyethylene composites

An existing lab-scale experimental setup system, originally developed for a patented Rapid Rotational Foam Molding (RRFM) process, was re-designed, built, and its functionality was successfully experimentally verified. The primary objective of the research work presented in this thesis was to provide the physical means to introduce a physical blowing agent (PBA) into RRFM processing operations in order to enable seamless processing of functionally graded polyethylene foamed composites. The quality of the produced specimen were assessed in terms of: foam density, volume expansion ratio, cell density, and cell size. The experimentally obtained rotationally molded foam composites desirably exhibited gradual change in compositional quality and morphology from one region to another, which was correlated with the thermal gradient that exist within the rotational mold during the part cooling process. The newly designed functionally graded cellular composites can have wide applications in automotive, aerospace and marine industries.

Name thesis:degree_name

Master of Applied Science (MASc)

Discipline thesis:degree_discipline

Mechanical Engineering

Grantor

University of Ontario Institute of Technology

Year dc:date.issued

2020

Author dc:creator

• Raktim, Isha K.

Advisor dc:contributor.advisor

• Pop-Iliev, Remon

• Rapid Rotational Foam Molding
• Functionally Graded Cellular Composites
• Physical bowing agent
• Chemical blowing agent
• Polyethylene

Language dc:language.iso

en

Handle dc:identifier.uri

https://hdl.handle.net/10155/1178

OAI identifier oai:identifier

oai:ontariotechu.scholaris.ca:10155/1178