Next Article in Journal
Nanostructured Photocatalysts and Their Applications in the Photocatalytic Transformation of Lignocellulosic Biomass: An Overview
Next Article in Special Issue
Investigations on the Mechanical Properties of Conducting Polymer Coating-Substrate Structures and Their Influencing Factors
Previous Article in Journal
Nanoporous Gold: Fabrication, Characterization, and Applications
Previous Article in Special Issue
Intercalated Nanocomposites Based on High-Temperature Superconducting Ceramics and Their Properties
Materials 2009, 2(4), 2216-2227; doi:10.3390/ma2042216

Inorganic Polymer Matrix Composite Strength Related to Interface Condition

1,* , 1
1 Composite Materials, Manufacture and Structures Laboratory, Mechanical Engineering, Colorado State Universtiy, Fort Collins, 80523-1374 Colorado, USA 2 Maine Maritime Academy, Castine, 04420 Maine, USA
* Author to whom correspondence should be addressed.
Received: 31 October 2009 / Revised: 29 November 2009 / Accepted: 3 December 2009 / Published: 7 December 2009
(This article belongs to the Special Issue Composite Materials)
Download PDF [874 KB, uploaded 7 December 2009]


Resin transfer molding of an inorganic polymer binder was successfully demonstrated in the preparation of ceramic fiber reinforced engine exhaust valves. Unfortunately, in the preliminary processing trials, the resulting composite valves were too brittle for in-engine evaluation. To address this limited toughness, the effectiveness of a modified fiber-matrix interface is investigated through the use of carbon as a model material fiber coating. After sequential heat treatments composites molded from uncoated and carbon coated fibers are compared using room temperature 3-point bend testing. Carbon coated Nextel fiber reinforced geopolymer composites demonstrated a 50% improvement in strength, versus that of the uncoated fiber reinforced composites, after the 250 °C postcure.
Keywords: geopolymer; inorganic polymer; ceramic matrix composite; engine valve geopolymer; inorganic polymer; ceramic matrix composite; engine valve
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
MDPI and ACS Style

Radford, D.W.; Grabher, A.; Bridge, J. Inorganic Polymer Matrix Composite Strength Related to Interface Condition. Materials 2009, 2, 2216-2227.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


Cited By

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert