Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Carbon nano tube Poisson ratio material

A technology of carbon nanotubes and carbon nanotube films, applied in the field of Poisson's ratio materials, to achieve the effect of expanding the scope of application

Inactive Publication Date: 2010-10-27
TSINGHUA UNIV +1
View PDF1 Cites 22 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, there is no material with both positive and negative Poisson's ratio properties in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Carbon nano tube Poisson ratio material
  • Carbon nano tube Poisson ratio material
  • Carbon nano tube Poisson ratio material

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0032] The carbon nanotube array provided in the embodiment of the present invention is one or more of a single-wall carbon nanotube array, a double-wall carbon nanotube array, and a multi-wall carbon nanotube array. In this embodiment, the preparation method of the carbon nanotube array adopts the chemical vapor deposition method, and its specific steps include: (a) providing a flat substrate, which can be a P-type or N-type silicon substrate, or an oxide layer formed thereon silicon substrate, the present embodiment preferably adopts a 4-inch silicon substrate; (b) uniformly form a catalyst layer on the surface of the substrate, and the catalyst layer material can be selected from iron (Fe), cobalt (Co), nickel (Ni) or One of alloys in any combination; (c) annealing the substrate formed with the catalyst layer in air at 700-900°C for about 30 minutes to 90 minutes; (d) placing the treated substrate in a reaction furnace, Heating to 500-740° C. under a protective gas environm...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a carbon nano tube Poisson ratio material which comprises a carbon nano tube membrane structure, wherein the carbon nano tube membrane structure comprises a plurality of carbon nano tubes, the carbon nano tubes are respectively arranged in a first direction and a second direction, the first direction is perpendicular to the second direction, and the carbon nano tubes arranged in the first direction and the carbon nano tubes arranged in the second direction are arranged in an overlapping and crossing mode. The carbon nano tube Poisson ratio material further comprises a flexible macromolecule basal body, wherein the carbon nano tube membrane structure is uniformly arranged in the flexible macromolecule basal body. The carbon nano tube Poisson ratio material can be used for manufacturing leather belts, safety belts and the like.

Description

technical field [0001] The invention relates to a Poisson's ratio material. Background technique [0002] Poisson's Ratio is defined as the ratio of negative transverse shrinkage strain to longitudinal elongation strain. [0003] Expressed as: [0004] V ij =-ε i / ε j [0005] Where: ε i represents the transverse shrinkage strain, ε j Indicates the longitudinal elongation strain. i, j are two mutually perpendicular coordinate axes respectively. The positive Poisson's ratio effect means that when the material is stretched, the material shrinks laterally within the elastic range; while when compressed, the material expands laterally. That is, when these materials are stretched, the transverse direction of the material shrinks. It is generally believed that almost all materials have a positive Poisson's ratio, about 0.3, 0.5 for rubber materials, 0.33 for metal aluminum, 0.27 for copper, and 0.1 to 0.4 for typical polymer foams. The Negative Poisson's Ratio effect me...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/00
CPCC01B31/0226B32B5/26B32B27/08B29C55/005C01B2202/36B32B27/04C01B2202/08B82Y40/00B82Y30/00B32B5/022B32B5/22B32B3/04B32B2250/20B32B2260/023B32B2260/046B32B2262/106B32B2307/50C01B32/16Y10T428/24124Y10S264/73Y10S977/742B29C55/00B29C55/04
Inventor 陈鲁倬刘长洪王佳平范守善
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com