Carbon Nanotube Sheet Lamination with Rough Protection Layer
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Solution Overview
Problem
Some bases used in carbon nanotube sheets do not allow for easy removal, leading to defects in the sheets.
Innovation Solution
A laminate comprising a carbon nanotube sheet with preferentially aligned carbon nanotubes and a first protection material with a surface roughness of 0.05 μm or more, which enables easy removal of the carbon nanotube sheet without rupture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a smooth base is used to support the carbon nanotube sheet, then the sheet can be protected during handling, but the sheet cannot be easily removed without causing defects
Solution Approach 1:
The invention changes the surface roughness parameter of the protection material from smooth (Ra < 0.05 μm) to rough (Ra ≥ 0.05 μm). This parameter change enables the protection material to provide both reliable protection and easy removal of the carbon nanotube sheet, resolving the technical contradiction between protection and ease of removal.
2Ease of operation
If a rough protection material is used to enable easy removal, then the sheet can be removed without defects, but the sheet may suffer from breakage due to excessive roughness
Solution Approach 1:
The invention precisely controls the surface roughness parameter within the range of Ra ≥ 0.05 μm and Ra ≤ 10 μm. This optimized parameter range provides sufficient roughness for easy removal while preventing excessive roughness that would cause sheet breakage, thus resolving the contradiction between ease of removal and sheet integrity.
Solution Approach 2:
The invention applies local quality by creating a specific surface roughness characteristic on the protection material that is optimized for the interface with the carbon nanotube sheet. The roughness is controlled to provide the right balance between release ease and sheet protection, rather than being uniformly smooth or rough throughout.
Data Source
AI summary
A laminate includes: a carbon nanotube sheet including a plurality of carbon nanotubes aligned preferentially in one direction within a plane of the sheet; and a first protection material having a surface in contact with the carbon nanotube sheet, the surface having a surface roughness Ra1 of 0.05 μm or more.