SKU: 77966220327

Double-wall carbon nanotubes

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Description

Double-wall carbon nanotubesProduct Name NameDouble wall carbon nanotubes Product Overview Double walled carbon nanotubes (DWNTs) can be seen as a nano tube structure composed of two coaxial graphite sheets coiled together, with a layer spacing of about 0. 34nm, a diameter generally between 2 4nm, and a length of several micrometers. Performance characteristics: It has good mechanical properties, such as high strength and high modulus; Has good electrical properties, such as

Product Name

Name:Double-wall carbon nanotubes


Product Overview

 

 

 

Double walled carbon nanotubes (DWNTs) can be seen as a nano tube structure composed of two coaxial graphite sheets coiled together, with a layer spacing of about 0.34nm, a diameter generally between 2-4nm, and a length of several micrometers.

Performance characteristics: It has good mechanical properties, such as high strength and high modulus; Has good electrical properties, such as high conductivity and semiconductor characteristics; Has high thermal conductivity; Has a large specific surface area.

Application areas: It has potential applications in composite materials, electronic devices, energy storage and conversion, sensors, and other fields. For example, it can be used to enhance the mechanical and electrical properties of composite materials; Can be used in electronic devices to manufacture transistors, sensors, etc; In the energy field, it can be used for supercapacitors, lithium-ion batteries, etc.


Technical Parameter

 

Color:black

OD:-4 nm

ID:-3nm

Purity:gt;60%

Length:~50 um

SSA:gt;350m2/g

True density:~2.1 g/cm3

EC:gt;100 s/cm

 

Product Features

 

Excellent mechanical properties: with extremely high strength and toughness. For example, its theoretical strength can reach tens or even hundreds of times that of steel.

Excellent electrical performance: can exhibit good conductivity, depending on aspect ratio, structure, and preparation method.

Good thermal performance: high thermal conductivity, capable of effectively transferring heat.

Large specific surface area: This makes it potentially applicable in fields such as adsorption and catalysis.


Application Fields

 

1. Composite material reinforcement: Multi walled carbon nanotubes have high strength and toughness. Adding them to matrices such as plastics, rubber, and metals can significantly improve the mechanical properties of the material, such as strength and stiffness. For example, grafting carbon nanotubes onto the surface of carbon fibers to obtain a multi-level structure can enhance the interfacial interaction with organic matrices and the mechanical properties of composite materials.

2. Electronic devices: Although their conductivity is not as single and excellent as single-walled carbon nanotubes, they still have good conductivity and can be used to manufacture high-performance conductive inks, sensors, flexible displays, and other electronic devices.

3. Electrode materials: Can be used as electrode materials for lithium-ion batteries and supercapacitors to improve energy storage and power output capabilities.

4. Catalysts and catalyst carriers: They can serve as catalysts themselves. It can also serve as a catalyst carrier, providing more active sites for catalytic reactions and enhancing catalytic performance due to its large specific surface area and unique structure. For example, acidified multi walled carbon nanotubes can be used as carriers to load composite inorganic salts, resulting in solid acid catalysts with superior catalytic effects than single component iron sulfate.

5. Energy field: In addition to the applications mentioned earlier in batteries, it can also be applied to hydrogen storage materials. The unique hollow structure and nanometer diameter of carbon nanotubes provide favorable conditions for hydrogen storage.

6. Absorbing materials: They have a certain ability to absorb electromagnetic waves and can be used to prepare absorbing materials. They have potential applications in military stealth, electromagnetic shielding, and other fields.

7. In the field of biomedicine: Its unique hollow structure and nanometer diameter can provide space for accommodating drugs, achieve high drug loading, and can pass through cell membranes and various biological barriers to deliver drugs to the inside of cells. In addition, it can effectively reduce the release rate of drugs and improve the sustained release effect.

8. Research field: commonly used in various scientific studies to help researchers explore the properties and potential applications of nanomaterials.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 77966220327

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Amanda
Carnegie, US
★★★★★ 5
Works wonderfully, I'm obsessed with labeling!
Color: Green
This is super easy to set up and use. I love the color and the size. I didn't want a label maker that needed a whole drawer to live in. The print is great, I love the multiple font options. My only complaint is that the label paper cutter on this actually cuts it too short. So when you go to print the next label it believes there is no paper. For the price point, I'd say absolutely worth the purchase
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Reviewed in the United States on April 21, 2026
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Arlene
Dallas, US
★★★★★ 4
Good, convenient and portable printer
Color: Green, Color: Green
This printer works great for my needs. The battery life has been good and the printer app functionality has worked without any issues. For me it is very easy to use and understand so overall I think it is a good, portable and convenient printer. However my one ad only issue is the labels get stuck and causes an error about 80% of the time meaning the label won’t print out unless I open it and realign it perfectly. That is a pain! I am contemplating returning it for a new one to see if it is just a design flaw or a printer issue so I am rating it 4 stars.
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Reviewed in the United States on April 30, 2026
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Travis
Alexandria, US
★★★★★ 5
I’m officially old now, but at least my stuff is organized. (A truly im-press-ive gadget).
Color: Green
I hit 30 recently, and apparently, my birthday present from the universe was a sudden, overwhelming urge to organize my garage and pantry. I bought this Nelko P21 to help with the transition into full adulthood, and honestly, it’s been a blast to use. Setting it up was surprisingly painless. You just download the app on your phone, turn on Bluetooth, and it connects almost instantly. The app itself is straightforward—you don't need a tech degree to figure out how to change the fonts, add borders, or even insert little icons. Since it's a thermal printer, you never have to buy ink or deal with messy cartridges, which is a massive plus for me because I would absolutely find a way to spill it. The machine itself is tiny, basically the size of a couple of smartphone decks stacked together, so it doesn't take up any room in a drawer. The labels print fast, the text is sharp, and the adhesive on the tape that comes with it holds up well on plastic storage bins and glass jars. My only minor complaint is that the app forces you to look at a ton of font options, and a lot of them are locked behind a subscription or paywall, but the free, basic fonts are more than enough to label a box of spare cables or spice jars. If you've reached the stage of life where clean storage containers bring you joy, this thing is worth every penny.
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Reviewed in the United States on May 25, 2026
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Shahbaz
Fort Morgan, US
★★★★★ 5
Didn’t Expect to Use It This Much, Now I Reach for It Daily
Color: Black, Color: Black
I originally bought this label maker for a few simple tasks, but it quickly turned into something I use almost every day. As someone who manages multiple locations and stays organized across different responsibilities, having a quick and reliable way to label and categorize items makes a bigger impact than you’d think and this does exactly that. What stands out: Quick setup and easy Bluetooth connection. Compact design that’s easy to keep within reach. Clear, professional-looking labels. App gives enough flexibility without being complicated, allows you to create QR codes as well as functioning barcodes. One thing to note: There’s a short learning curve with the app, but nothing that slows you down after the first couple uses. Bottom line: If you value organization and efficiency, this is one of those small tools that quietly improves how you operate day to day.
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Reviewed in the United States on March 24, 2026
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Jordan
Belleville, US
★★★★★ 5
Perfect Label Maker
Color: White
I wasn’t expecting to love a label maker this much, but this thing has been incredibly useful. It’s easy to set up, simple to use, and prints clear, professional-looking labels every time. The print quality is sharp and the labels stick really well without peeling off.
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Reviewed in the United States on May 27, 2026

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