[특허]Nanotube-based insulators

[미국특허] Nanotube-based insulators 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B32B-005/12 B32B-003/20 B32B-003/10 D06N-007/04
출원번호	US-0343366 (2012-01-04)
등록번호	US-8722171 (2014-05-13)
발명자 / 주소	Lashmore, David S. Lewis, Diana
출원인 / 주소	Nanocomp Technologies, Inc.
대리인 / 주소	Greenberg Traurig, LLP
인용정보	피인용 횟수 : 1 인용 특허 : 16

초록 ▼

A nanotube-based insulator is provided having thermal insulating properties. The insulator can include a plurality of nanotube sheets stacked on top of one another. Each nanotube sheet can be defined by a plurality of carbon nanotubes. The plurality of carbon nanotubes can be configured so as to decrease normal-to-plane thermal conductivity while permitting in-plane thermal conductivity. A plurality of spacers can be situated between adjacent nanotube sheets so as to reduce interlayer contact between the nanotubes in each sheet. The plurality of spacers can be ceramic or alumina dots or provided by texturing the nanotube sheets.

대표청구항 ▼

1. An insulator comprising: a plurality of nanotube sheets positioned on top of one another,each sheet is wound about its central axis to form multiple distinct layers with a plurality of nanotubes in each distinct layer, the nanotubes being substantially contained within each distinct layer as to minimize normal-to-plane thermal conductivity between distinct layers; anda plurality of spacers situated between adjacent nanotube sheets in order to reduce intersheet contact, so as to further minimize normal-to-plane thermal conductivity between the sheets. 2. The insulator of claim 1, wherein the nanotube sheets are defined by non-woven nanotubes. 3. The insulator of claim 1, wherein each nanotube sheet includes a dopant to decrease normal-to-plane thermal conductivity. 4. The insulator of claim 3, wherein the dopant is boron, carbon 13, an irradiated CNT material, or a combination thereof. 5. The insulator of claim 4, wherein the dopant is about 0.5 to about 5% weight percent boron. 6. The insulator of claim 4, wherein the dopant is about 2% weight percent boron. 7. The insulator of claim 1, wherein the plurality of nanotubes are substantially aligned in-plane to maintain the in-plane thermal conductivity. 8. The insulator of claim 1, wherein the plurality of spacers are alumina or ceramic dots situated between adjacent nanotube sheets. 9. The insulator of claim 1, wherein the plurality of spacers are a plurality of holes in each nanotube sheet. 10. The insulator of claim 1, wherein the plurality of spacers are provided by a porous layer of non-metal material having poor thermal conductivity and positioned between adjacent nanotube sheets. 11. The insulator of claim 1, wherein the plurality of spacers are provided by a texture in each nanotube sheet to define a rough surface having peaks and valleys thereon, so as to minimize surface contact between adjacent nanotube sheets.

이 특허에 인용된 특허 (16) 인용/피인용 타임라인 분석

Geohegan, David B.; Seals, Roland D.; Puretzky, Alex A.; Fan, Xudong, Condensed phase conversion and growth of nanorods instead of from vapor.
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Smalley, Richard E.; Colbert, Daniel T.; Dai, Hongjie; Liu, Jie; Rinzler, Andrew G.; Hafner, Jason H.; Smith, Kenneth A.; Guo, Ting; Nikolaev, Pavel; Thess, Andreas, Continuous fiber of single-wall carbon nanotubes.
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Ajayan, Pulickel M.; Wei, Bingqing; Zhu, Hongwei; Xu, Cailu; Wu, Dehai, Direct synthesis of long single-walled carbon nanotube strands.
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Ronald E. Pelrine ; Roy D. Kornbluh ; Qibing Pei ; Jose P. Joseph, Electroactive polymer electrodes.
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Iijima Sumio,JPX, Graphite filaments having tubular structure and method of forming the same.
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Breinlinger, Keith, Hybrid conductor-board for multi-conductor routing.
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Harbec, David; Meunier, Jean-Luc, Method for producing carbon nanotubes using a DC non-transferred thermal plasma torch.
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Derbyshire, Rosemary; Andrews, Rodney; Safadi, Bouchra, Mixing and dispersion of nanotubes by gas or vapor expansion.
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McKechnie, Timothy N.; Antony, Leo V. M.; O'Dell, Scott; Power, Chris; Tabor, Terry, Nano powders, components and coatings by plasma technique.
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Singhal,Amit; Skandan,Ganesh; Jain,Mohit, Nanostructured multi-component and doped oxide powders and method of making same.
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Rueckes, Thomas; Segal, Brent M., Nanotube films and articles.
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Rueckes, Thomas; Segal, Brent M., Nanotube films and articles.
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Barrera, Enrique V.; Rodriguez-Macias, Fernando J.; Lozano, Karen; Chibante, Luis Paulo Felipe; Stewart, David Harris, Oriented nanofibers embedded in a polymer matrix.
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Von Arx, Theodore; Laken, Keith; Schlesselman, John W.; Tweedy, Clifford D., Packaging having self-contained heater.
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John Gerard Lavin ; Harry Vaughn Samuelson, Single-wall carbon nanotube-polymer composites.
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Anthony, Thomas C., Vertically oriented nano-fuse and nano-resistor circuit elements.
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이 특허를 인용한 특허 (1) 인용/피인용 타임라인 분석

Lashmore, David S.; Lewis, Diana, Nanotube-based insulators.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Nanotube-based insulators 원문보기