Engineering and Technology Journal

Improving Drilling Fluid Properties by Using Nano-Additives

D. Mahmood; N. S. AL-Zubaidi; A. A. Alwasiti

Volume 35, 10A , October 2017, , Page 1034-1041

https://doi.org/10.30684/etj.35.10A.10

Abstract

Nanotechnology is one of the most important techniques in recent days. Using Nano-additives to improve drilling fluids properties in order to meet the modern drilling process requirement ... Read More ...

Ceramic Filled Polymer Matrix Composite Used For Bio-Medical Application

Waleed Asim Hanna; Abbas Khammas Hussei; Hayder Abbas Sallal

Volume 29, Issue 9 , June 2011, , Page 1765-1773

https://doi.org/10.30684/etj.29.9.11

Abstract

Synthetic polymers such as polyurethane are used widely in the field of biomedical applications such as implants or part of implant systems. This work focuses on the preparation of ... Read More ...

Preparation and Characterization of Polymer- Ceramic Composite Bio-material

Rabab Asim Abdul-Aziz; Waleed Asim Hanna; Kahtan Khalaf Al-khazraji

Volume 28, Issue 13 , June 2010, , Page 2497-2515

https://doi.org/10.30684/etj.28.13.1

Abstract

This work focuses on studying the addition effect of the prepared HA powder asa filler material before and after the calcination process with different volumefractions (2.5, 5, 7.5, ... Read More ... This work focuses on studying the addition effect of the prepared HA powder asa filler material before and after the calcination process with different volumefractions (2.5, 5, 7.5, 10, 12.5, 15) vol% to the unsaturated polyester resin matrix.Many mechanical and physical tests were used to determine the properties of theprepared composite material which involved tensile strength, the modulus ofelasticity, the elongation percentage at break, compression strength, compressionmodulus, bending strength, impact strength, fracture toughness, hardness and waterabsorption percentage. For the prepared HA powder, the Ca/P ratio was increasedafter the calcination process from 2.45 to 2.51. X- ray diffraction patterns for theprepared HA powder before and after the calcination process revealed an increasein the HA peak intensity after the calcination process. Secondary phases alsoappeared after the calcination process like (α- Ca3(PO4)2 ) and (β- Ca2P2O7). For theprepared composite material with both groups of HA filler particles, the results hadshown that the mechanical properties which included: tensile strength, modulus ofelasticity, compression strength, compression modulus, bending strength, fracturetoughness and hardness have been increased with increasing volume fraction ofHA filler particles and reached their maximum value at (7.5 vol%). Furthermore,the increasing in volume fraction revealed a decreasing in the evaluated properties.Both the elongation percentage at the break point and the impact strengthdecreased with increasing volume fraction of HA filler particles. The waterabsorption percentage as a physical property for the prepared composite materialshowed an increase with increasing volume fraction of HA filler particles. Theimprovement of unsaturated polyester resin with calcined HA filler particles hadshown greater values for the fore-mentioned properties than the improvement ofunsaturated polyester resin with uncalcined HA filler particles.

Keywords = material

Improving Drilling Fluid Properties by Using Nano-Additives

Abstract

Ceramic Filled Polymer Matrix Composite Used For Bio-Medical Application

Abstract

Preparation and Characterization of Polymer- Ceramic Composite Bio-material

Abstract