Incorporation of nanoparticles in composite fibers

• US 8,969,225 B2
• Filed: 07/29/2010
• Issued: 03/03/2015
• Est. Priority Date: 08/03/2009
• Status: Active Grant

• Current Assignee: Applied NanoStructured Solutions, LLC (Cabot Corporation)
• Original Assignee: Applied Nano Structured Solutions LLC
• Inventors: Shah, Tushar K., Malecki, Harry C.
• Primary Examiner(s): MATZEK, MATTHEW D
• Application Number:
  US12/846,698
• Publication Number:
  US 20110028308A1
• Time in Patent Office: 1,678 Days
• Field of Search: 428/34.5, 65/173, 501/11, 501/35, 264/165, 264/172.11, 977/778, 977/779
• US Class Current: 501/35
• CPC Class Codes: B01J 23/38 of noble metals
• CPC Class Codes: B01J 23/70 of the iron group metals or copper
• CPC Class Codes: B01J 23/745 Iron
• CPC Class Codes: B01J 31/06 containing polymers organometallic polymers B01J31/123; polymer-bound organometallic complexes B01J31/165; coordination polymers B01J31/1691
• CPC Class Codes: B01J 35/23 in a colloidal state
• CPC Class Codes: B01J 35/393 Metal or metal oxide crystallite size
• CPC Class Codes: B01J 35/58 Fabrics or filaments
• CPC Class Codes: B82Y 30/00 Nanotechnology for materials or surface science, e.g. nanocomposites
• CPC Class Codes: C03B 37/0206 by contacting of the fibres with liquid or mist
• CPC Class Codes: C03B 37/0213 by forced gas cooling, i.e. blowing or suction
• CPC Class Codes: C03B 37/023 Fibres composed of different sorts of glass, e.g. glass optical fibres, made by the double crucible technique
• CPC Class Codes: C03B 37/10 Non-chemical treatment surface treatment of fibres or filaments made from glass, minerals or slags C03C25/00
• CPC Class Codes: C03B 5/173 Apparatus for changing the composition of the molten glass in glass furnaces, e.g. for colouring the molten glass chemical aspects C03C
• CPC Class Codes: C03C 14/006 the non-glass component being in the form of microcrystallites, e.g. of optically or electrically active material
• CPC Class Codes: C03C 25/47 containing particles, fibres or flakes, e.g. in a continuous phase
• CPC Class Codes: C04B 14/386 Carbon carbon nanotubes C04B14/026
• CPC Class Codes: C04B 14/42 Glass
• CPC Class Codes: C04B 20/1066 Oxides, Hydroxides
• CPC Class Codes: C04B 2235/5248 Carbon, e.g. graphite
• CPC Class Codes: C04B 2235/5288 Carbon nanotubes
• CPC Class Codes: C04B 26/10 : obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• CPC Class Codes: C04B 35/62847 : with oxide ceramics
• CPC Class Codes: C04B 35/62873 : Carbon
• CPC Class Codes: C04B 35/62876 : with metals
• CPC Class Codes: C04B 35/62892 : with a coating layer consisting of particles
• CPC Class Codes: C04B 35/62894 : with more than one coating layer
• CPC Class Codes: Y10S 977/778 : within specified host or matrix material, e.g. nanocomposite films
• CPC Class Codes: Y10S 977/779 : Possessing nanosized particles, powders, flakes, or clusters other than simple atomic impurity doping

Abstract

A method includes a providing a molten glass fiber core and disposing a plurality of nanoparticles that include a transition metal oxide on the molten glass fiber core at or above the softening temperature of the glass fiber core, thereby forming a nanoparticle-laden glass fiber. The plurality of nanoparticles are embedded at the surface of said glass fiber core. A method includes providing a mixture of molten glass and a plurality of nanoparticles. The plurality of nanoparticles include a transition metal. The method further includes forming nanoparticle-laden glass fibers, in which the plurality of nanoparticles are embedded throughout the glass fibers.

Claims

1. A glass fiber comprising transition metal oxide nanoparticles disposed throughout the glass fiber, the transition metal oxide nanoparticles comprising about 0.01 to about 5 percent of the glass fiber by weight and having a protective coating thereon that comprises porous alumina or a porous ceramic.

2. The glass fiber of claim 1, wherein the transition metal oxide comprises an oxide selected from the group consisting of iron, copper, nickel, cobalt, and mixtures thereof.

3. The glass fiber of claim 1, wherein the transition metal oxide nanoparticles range in size from between about 0.1 to about 80 nm.

4. The glass fiber of claim 1, wherein the transition metal oxide nanoparticles range in size from between about 5 nm to about 30 nm.

5. A chopped strand mat comprising the glass fiber of claim 1.

6. A composite comprising the glass fiber of claim 1.

7. A glass fiber comprising transition metal oxide nanoparticles embedded at the surface of the glass fiber such that the transition metal oxide nanoparticles are at least partially within a. structure of the glass fiber, the transition metal oxide nanoparticles comprising about 0.001 to about 3 percent of the glass fiber by weight and having a protective coating thereon that comprises porous alumina or a porous ceramic.

8. The glass fiber of claim 7, wherein the transition metal oxide comprises an oxide selected from the group consisting of iron, copper, nickel, cobalt, and mixtures thereof.

9. The glass fiber of claim 7, wherein the transition metal oxide nanoparticles range in size from between about 0.1 nm to about 80 nm.

10. The glass fiber of claim 7, wherein the transition metal oxide nanopartic es range in size from between about 5 nm to about 30 nm.

11. A chopped strand mat comprising the glass fiber of claim 7.

12. A composite comprising the glass fiber of claim 7.