A PhD student, Haider A. Salal, defended his dissertation “Fabrication of Advanced Ceramic Materials for Bio Composite Applications” on Thursday, January 16th, at the conference room (C), Department of Materials Engineering, University of Technology. The Committee members included:
|
Name |
Affiliation |
Position in the committee |
|
Prof. Dr. Zuhair J. Abdul Amir |
University of Karbala, College of Engineering |
Chair |
|
Prof. Dr. Balqees Mohammed |
University of Technology, Department of Applied Sciences |
Member |
|
Prof. Dr. Kazem K. Resan |
Al-Mustansiriyah University, College of Engineering, Department of Mechanical Engineering |
Member |
|
Prof. Dr. Akram R. Jabr |
University of Technology, Materials Engineering Department |
Member |
|
Ass. Prof. Dr. Kazem M. Shabeeb |
University of Technology, Materials Engineering Department |
Member |
|
Ass. Prof. Farhad M. Othman |
University of Technology, Materials Engineering Department |
Adviser |
|
Ass. Prof. Dr. Eawda J. Brihi |
Babylon University, College of Materials Engineering |
Adviser |
The dissertation was scientifically evaluated by Ass. Prof. Dr. Sadiq J. Abbas, Al-Nahrain University, College of Engineering, and linguistically by Dr. Rabab A. Abdel Aziz, University of Technology, Materials Engineering Department.
The discussion was conducted in a scientific atmosphere and a master's degree with grade of pass was awarded to the student after the completion of all the corrections that have been decided by the examiners.
Abstract
Bioapplications often involve many biomaterials such as polymeric materials , ceramic and metal materials. Improved properties have been demonstrated upon use these different classifications of biomaterials. Epoxy and unsaturated polyester are commonly used in Prosthetics . Therefore, it can be strengthened by (nano and micro materials) and fibers to enhance the mechanical and tribological properties.
This work includes the manufacturing process of nanoparticles consisting of two oxides to produce two types of particles ((Al2O3 - CaO) and (Al2O3-MgO)) by sol gel process and study the effect of temperature on the resulting CNP, were treated at (550 and 850) 0C and were used (aluminum, calcium and magnesium) Nitrate as raw materials for the manufacturing of CNP from ((Al2O3 - CaO) and (Al2O3-MgO)). Then the resulting powders were examined showing that the powders which are treated at lower temperatures (550) gave less particle size , more smoothness and particles of random and irregular shape. In addition, the manufacturing method gave high purity particles which indicates the success of the used manufacturing method.
The other part of the work involves the manufacturing of two polymer blends (epoxy and unsaturated polyester) and the effect of adding one to the other at weight fractions (2,4,6 and 8% wt) . The results showed that the best results achieved at (4% EP + 96% UPE). where the (tensile ,compression, bending , impact and hardness) test results of (4% EP + 96% UPE) were (42.9,102 , 59.5)Mpa , (0.4 J) and 74 shore D) respectively , comparing with the main UPE sample where it gave test results of (38.2, 98 , 42.5)Mpa , (0.33 J) and 61shore D) respectively .
The results showed that the addition of UPE to EP improves the properties of the epoxy for all ratios up to (8% UPE + 92% EP) where the best results of (tensile ,compression, bending and impact and hardness) tests of the (8% UPE + 92% EP) were ( (48.1, 59.5 , 45) Mpa , (0.29 J) and 73 shore D) respectively , comparing with the main EP sample where it gave test results (30.8,69 , 30.5)Mpa , (0.29 J) and 58.5 shore D) respectively.
For the polymer blends , the wear rate was reduced at the above mentioned ratios for both types (4% EP + 96% UPE) and (8% UPE + 92% EP) comparing to the basic samples of EP and UPE.
