Degree Type


Date of Award


Degree Name

Doctor of Philosophy


Industrial Education and Technology

First Advisor

William Wolansky


The study was designed to investigate the effects of time and temperature on the mechanical property of hardness of a polycarbonate (thermoplastic) matrix, to achieve an 80% glass loading to a 20% wet-out for the polycarbonate pre-impregnated rod, to develop the prototype pultrusion equipment for polycarbonate pre-impregnated rod, and to develop the prototype pulforming equipment for polycarbonate fibersteel composite rod. Fibersteel rod is composed of seven pre-impregnated rods twisted into a spiral shape to act as a substitute for steel reinforcement rod in concrete;A polycarbonate matrix which had been solvent treated was tested according to Rockwell Hardness Test (ASTM 785). An 80% glass loading was achieved by implementing a resin wet-out tank, which contains rollers designed to spread and submerge fibers in a polycarbonate/solvent solution. Percent of glass loading was obtained according to Ignition Test (ASTM 2584). Prototype pultrusion and pulforming equipment was designed and built at Iowa State University, Ames, Iowa;There were significant differences among all different temperature and speed combinations for the Rockwell Hardness on the polycarbonate matrix. An 80% glass loading was achieved for long glass fiber embedment in a polycarbonate pre-impregnated rod. Processing parameters have been established for both the pultrusion and pulforming processes.



Digital Repository @ Iowa State University,

Copyright Owner

Jeong Goo Lee



Proquest ID


File Format


File Size

141 pages