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Houston, TX, United States

Davis D.C.,Texas A&M University | Wilkerson J.W.,Texas A&M University | Zhu J.,NanoRidge Materials Inc. | Hadjiev V.G.,University of Houston
Composites Science and Technology | Year: 2011

Carbon fiber reinforced epoxy composite laminates are studied for improvements in quasi static strength and stiffness and tension-tension fatigue cycling at stress-ratio (R-ratio) = +0.1 through strategically incorporating amine functionalized single wall carbon nanotubes (a-SWCNTs) at the fiber/fabric-matrix interfaces over the laminate cross-section. In a comparison to composite laminate material without carbon nanotube reinforcements there are modest improvements in the mechanical properties of strength and stiffness; but, a potentially significant increase is demonstrated for the long-term fatigue life of these functionalized nanotube reinforced composite materials. These results are compared with previous research on the cyclic life of this carbon fiber epoxy composite laminate system reinforced similarly with side wall fluorine functionalized industrial grade carbon nanotubes. Optical and scanning electron microscopy and Raman spectrometry are used to confirm the effectiveness of this strategy for the improvements in strength, stiffness and fatigue life of composite laminate materials using functionalized carbon nanotubes. © 2011 Elsevier Ltd. Source

Kyle K.,NanoRidge Materials Inc.
JEC Composites Magazine | Year: 2015

A new nanotechnology-enhanced coating product from NanoRidge Materials Inc. is poised to change the way industries and consumers survive cold temperatures and protect equipment, fluids, and products from the damage and delays associated with freezing and static discharge. © 2015 Ashland AD-13070. Source

Agency: Department of Defense | Branch: Air Force | Program: STTR | Phase: Phase I | Award Amount: 99.87K | Year: 2009

The incorporation of carbon nanotubes into host matrices or the assembly of them into devices is today’s technical challenge and opportunity. Carbon fibers are widely used in a variety of applications including aerospace, military and commercial. These applications are limited by the trade-offs that must be made between structural and conductivity properties. A new area of interest is the nanotailoring of fibers with carbon nanotubes to produce a high strength, high modulus light weight fiber that is thermally and electrically conductive. The greatest challenge to optimizing the benefits from SWNTs in polymer composites and fibers is the difficulty in obtaining a high degree of uniform dispersion and preferably, dispersion at the molecular level. To address these critical issues, the NanoRidge Materials / Rice University Team (TEAM) propose using several strategies to obtain high dispersion within the SWNT/polymer solution and fiber. The objective of this Phase I proposal is to establish the technical basis for synthesis and characterization of high strength light weight nanotube tailored carbon fibers. The NanoRidge/RICE Team will focus our work on developing continuous fiber processing technology based on pre-existing work to maximize SWNT dispersion and alignment for the fiber spinning process. Work will also include extensive characterization to understand internal structure and process-morphology, establish the performance data base of process-property-morphology on nanotube tailored carbon fibers.

Carbon fibers made by a process using an organogel precursor that includes a nucleophilic filler and polyacrylonitrile; such a process which includes dry-jet wet spinning; and an article made from such carbon fibers.

Agency: Department of Defense | Branch: Navy | Program: STTR | Phase: Phase I | Award Amount: 69.99K | Year: 2006

This STTR proposal seeks to investigate the chemical functionalization of single wall carbon nanotubes and their use as reinforcing agents for high performance polymer composites (epoxy and vinyl ester). Rice University has been very successful in research on nanotube functionalization and incorporation into polymer composites. Significant mechanical property improvements have been demonstrated using small amounts of functionalized nanotubes. NanoRidge Materials Inc. intends to transfer these proprietary technologies into large scale commercial applications through further research and development efforts to achieve additional property enhancements with cost effective and scalable processes. The objective of this Proposal is to identify the optimal functionalized nanotube for epoxy and to integrate into epoxy composites for significant mechanical property enhancement. Major technical tasks of Phase I are: (1) develop nanotube functionalization routines to attach functional groups compatible with structural epoxy resins and obtain improved dispersion and bonding in matrix; (2) determine the optimum degree of functionalization such that nanotube mechanical properties are not deteriorated, while nanotubes are maximally utilized as reinforcement. This will involve characterization of the effect of functionalization on the mechanical properties of nanotubes; (3) Develop processing technology to incorporate such functionalized SWNT into epoxy and/or vinyl ester composites and achieve significant mechanical property enhancements. BENEFITS: Successful completion of the Phase I and Phase I Option will provide the technical basis for understanding the degree of functionalization of SWNTs, and the effective influence on mechanical properties of epoxy and vinyl ester resin nanocomposites. Initial process conditions for both the functionalization steps and the subsequent dispersion procedures into the resin will be developed. The technical advancements from Phase I and the anticipated follow-on Phase II efforts will be applicable to a variety of industrial products and systems as well as to the Navy’s interests. Potential commercial applications in such diverse areas as aerospace, industrial (including oil & gas), municipal piping infrastructure, and transportation infrastructure such as bridges and guards, will benefit from the direct translation of this technology into product development efforts.

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