System and method for surface treatment and barrier coating of fibers for in situ cnt growth

a technology of in situ cnt and fiber, applied in the direction of physical treatment, physical/chemical process catalysts, textile treatment by spraying/projecting, etc., can solve the problems of low weight, entangled and non-aligned carbon nanotubes, incorporating and aligning cnts on fibers and/or in composites, etc., to achieve the effect of enhancing the reception of cnt growth catalyst nanoparticles

Inactive Publication Date: 2010-09-09
APPL NANOSTRUCTURED SOLUTIONS LLC
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0005]In some aspects, embodiments disclosed herein relate to a system for synthesizing carbon nanotubes (CNT) on a fiber material that includes a surface treatment system adapted to modify the surface of the fiber material to receive a barrier coating upon which carbon nanotubes are to be grown, a barrier coating application system downstream of the surface treatment system adapted to apply the barrier coating to the treated fiber material surface, and a barrier coating curing system downstream of the barrier coating application system for partially curing the applied barrier coating to enhance reception of CNT growth catalyst nanoparticles.

Problems solved by technology

However, incorporation and alignment of CNTs on fibers and / or in composites has been problematic.
Current methods of growing carbon nanotubes on fibers result in entangled and non-aligned carbon nanotubes with low weight percentage / concentration of carbon nanotubes.
This temperature sensitivity can manifest as an inherent instability of the fiber material at CNT growth temperatures.

Method used

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  • System and method for surface treatment and barrier coating of fibers for in situ cnt growth
  • System and method for surface treatment and barrier coating of fibers for in situ cnt growth
  • System and method for surface treatment and barrier coating of fibers for in situ cnt growth

Examples

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example i

[0107]This example shows how a barrier layer can be used in a ceramic fiber composite structure to prevent sintering of iron nanoparticles applied to the ceramic fiber surface for enhanced signature control characteristics.

[0108]FIG. 14 depicts system 400 for producing a high temperature ceramic fiber composite with enhanced signature control characteristics in accordance with the illustrative embodiment of the present invention. System 400 includes a ceramic fiber 402, barrier coating solution bath 404, nanoparticle solution bath 406, coating curing system 408, filament winding system 410, and a resin infusion system 412, interrelated as shown.

[0109]The ceramic fiber 402 used is a Silicon Carbide Sylramic™ fiber tow (1600 denier—10 micron diameter) (COI Ceramics, Inc).

[0110]A barrier coating 404, consisting of the Starfire SMP-10, RD-212a solution is applied to the ceramic fiber 402 via a dip process. A diluted solution of 1 part SMP-10 and 10 parts isopropyl alcohol is used in the...

example ii

[0116]This example shows how carbon nanotubes (CNTs) can be grown on the surface of a carbon fiber using a barrier coating to prevent sintering of the iron nanoparticle catalyst.

[0117]FIG. 15 depicts system 500 for producing CNTs on carbon fiber (34-700 12 k unsized carbon fiber tow with a tex value of 800—Grafil Inc., Sacramento, Calif.) in accordance with the illustrative embodiment of the present invention. System 500 includes a carbon fiber material payout and tensioner station 505, plasma treatment station 515, barrier coating application station 520, air dry station 525, catalyst application station 530, solvent flash-off station 535, CNT-growth station 540, and carbon fiber material uptake bobbin 550, interrelated as shown.

[0118]Payout and tension station 505 includes payout bobbin 506 and tensioner 507. The payout bobbin delivers an unsized carbon fiber material 560 to the process; the fiber is tensioned via tensioner 507. For this example, the carbon fiber is processed at a...

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Abstract

A system for synthesizing carbon nanotubes (CNT) on a fiber material includes a surface treatment system adapted to modify the surface of the fiber material to receive a barrier coating upon which carbon nanotubes are to be grown, a barrier coating application system downstream of the surface treatment system adapted to apply the barrier coating to the treated fiber material surface, and a barrier coating curing system downstream of the barrier coating application system for partially curing the applied barrier coating to enhance reception of CNT growth catalyst nanoparticles.

Description

STATEMENT OF RELATED APPLICATIONS[0001]The present invention claims priority under 35 U.S.C. §119(e) to provisional applications 61 / 157,096 filed Mar. 3, 2009, and 61 / 182,153 filed May 29, 2009, each of which is incorporated by reference herein in their entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]Not applicable.FIELD OF THE INVENTION[0003]The present invention relates to carbon nanotube (CNT) growth, more specifically to CNT growth on fiber substrates.BACKGROUND OF THE INVENTION[0004]In a fiber-based composite, fibers act as a reinforcing agent, while a matrix material localizes the fibers and, in some cases, controls their orientation. The matrix material also serves as a load-transfer medium between fibers within the composite. Due to their exceptional mechanical properties, carbon nanotubes (CNTs) have been used to further reinforce fiber composite materials. However, incorporation and alignment of CNTs on fibers and / or in composites has been pro...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C23C16/00B05C9/14
CPCB01J21/185Y10T428/2495B01J35/0013B01J37/0219B82Y30/00B82Y40/00C01B31/0233D06B1/02D06B3/10D06B19/00D06M11/74C01B31/0226Y10S977/842Y10T428/25B01J23/745C01B32/162C01B32/16C01B32/05B32B9/00D06M10/00D06M11/45D06M11/73
Inventor MALECKI, HARRY C.ALBERDING, MARK R.MALET, BRANDON K.SHAH, TUSHAR K.
Owner APPL NANOSTRUCTURED SOLUTIONS LLC
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