Phase transformation effects on the wear properties of alumina gel–polymer matrix nanocomposites

Jiazhong Luo; John Lannutti; Robert Seghi

doi:10.1557/jmr.2001.0233

Phase transformation effects on the wear properties of alumina gel–polymer matrix nanocomposites

Journal of Materials Research ◽

10.1557/jmr.2001.0233 ◽

2001 ◽

Vol 16 (6) ◽

pp. 1680-1685 ◽

Cited By ~ 1

Author(s):

Jiazhong Luo ◽

John Lannutti ◽

Robert Seghi

Keyword(s):

Phase Transformation ◽

Polymer Matrix ◽

Polymer Matrix Composites ◽

Growth Patterns ◽

Matrix Composites ◽

Wear Properties ◽

Wear Rates ◽

Alumina Gel ◽

Matrix Nanocomposites ◽

Polymer Matrix Nanocomposites

A phase transformation in an alumina gel provided an elegant means of isolating the effect of filler properties on the wear resistance of particle-reinforced thermosetting polymer–matrix composites. This transformation was useful because it takes place without significantly altering filler porosity. This produced a wear surface apparently reflecting the vermicular growth patterns in the γ-alumina in the δ-aluminum monohydrate matrix. Nucleation of γ-alumina in the gel matrix produced wear rates comparable to commercial composites.

Download Full-text

Polymer Matrix Composites with Particles of TiC Obtained by a Sol-Gel Method

Solid State Phenomena ◽

10.4028/www.scientific.net/ssp.106.141 ◽

2005 ◽

Vol 106 ◽

pp. 141-144 ◽

Cited By ~ 5

Author(s):

K. Konopka ◽

Anna Biedunkiewicz ◽

Anna Boczkowska ◽

Zbigniew. Rosłaniec ◽

Krzysztof Jan Kurzydlowski

Keyword(s):

Polymer Matrix ◽

Polymer Matrix Composites ◽

Sol Gel ◽

Matrix Composites ◽

Gel Method ◽

Sol Gel Method ◽

Force Microscopy ◽

Tic Nanoparticles ◽

Matrix Nanocomposites ◽

Polymer Matrix Nanocomposites

Nanoparticles of carbides, nitrides and carbonitrides can be used to reinforce polymer matrix nanocomposites to obtain the required strength, hardness, corrosion and wear resistance. In order to efficiently achieve the desirable properties the polymer matrix and nanoparticles must be optimised. This paper reports on studies undertaken on TiC reinforced polymer matrix nanocomposites. The TiC nanoparticles were produced by sol-gel method and nanocomposites were obtained in situ, via the reaction and synthesizing of polyether-ester copolymer (PEE). TiC nanoparticles were characterised with a scanning electron microscopy (SEM) and the microstructure of the composites was examined by SEM and atomic force microscopy (AFM). Tensile properties were determined. For comparison, samples of polymer were also studied and composites with submicron size of TiC particles. The results, which are discussed in terms of size of the TiC particles, showed that the particles incorporated in the polymer matrix, influence the strength of the composites.

Download Full-text

Effect of Processing on the Microstructure and Electrical Conductivity of Hot Pressed PMMA/ITO Bulk Nanocomposites

MRS Proceedings ◽

10.1557/proc-977-0977-ff12-19 ◽

2006 ◽

Vol 977 ◽

Cited By ~ 1

Author(s):

Charles J. Capozzi ◽

Rosario A. Gerhardt

Keyword(s):

Electrical Conductivity ◽

Electrical Properties ◽

Polymer Matrix ◽

Indium Tin Oxide ◽

Polymer Matrix Composites ◽

Processing Parameters ◽

Specimen Thickness ◽

Matrix Composites ◽

Matrix Nanocomposites ◽

Network Microstructure

AbstractThere are few studies that discuss the effect of the fabrication conditions and bulk thickness on the electrical conductivity of hot pressed polymer-matrix composites. For polymer-matrix composites that possess a segregated-network microstructure, the processing parameters can significantly impact the electrical properties and microstructure of the composite material. Our group has recently fabricated novel polymer-matrix nanocomposites, which possess a segregated network microstructure containing regular, polyhedral-shaped polymer matrix particles1-2. This paper investigates the effect of processing pressure and specimen thickness on the electrical properties and microstructure of hot pressed poly(methyl methacrylate) (PMMA) containing segregated networks of indium tin oxide (ITO) nanopowders.

Download Full-text