High Quality carbon nanotube 18-40nm
SKU: 80264270586

High Quality carbon nanotube 18-40nm

Sale price$116.49 Regular price$129.43
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Description

High Quality carbon nanotube 18-40nmProduct Name Name: High Quality carbon nanotube 18 40nm Product Overview Multi walled carbon nanotubes (MWCNTs) are important nanomaterials with unique structures and excellent properties. Multi walled carbon nanotubes are hollow tubules composed of multiple coaxial graphite cylindrical surfaces, and the spacing between adjacent cylindrical surfaces is comparable to the spacing of graphite layers. Multi walled carbon nanotubes can be seen as coaxially

Product Name

Name: High Quality carbon nanotube 18-40nm

Product Overview

Multi-walled carbon nanotubes (MWCNTs) are important nanomaterials with unique structures and excellent properties. Multi-walled carbon nanotubes are hollow tubules composed of multiple coaxial graphite cylindrical surfaces, and the spacing between adjacent cylindrical surfaces is comparable to the spacing of graphite layers. Multi-walled carbon nanotubes can be seen as coaxially nested with multiple single-walled carbon nanotubes of different diameters, with the number of layers ranging from 2 to 50, and the spacing between each layer is consistent, forming a cable-like multilayer structure. At present, the preparation methods of multi-walled carbon nanotubes mainly include arc discharge method, laser ablation method, chemical vapor deposition (CVD) method and flame method. Among them, the chemical vapor deposition method is widely used because of its simple equipment and high product purity.

Technical Parameter

Outside Diameter:18-40 nm

Length:5-15 μm 

Ash content ¡ãC.5wt%  

Product Features

Excellent mechanical properties: with extremely high strength and toughness. 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

Additives in polymers, catalysts, electron field emitters for cathode ray lighting components, gas discharge tubes in telecommunications networks, energy conversion, lithium battery anodes, hydrogen storage, nanotube composite materials (by filling or coating); Sensors, reinforcement in composite materials, supercapacitors, etc.

Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 80264270586

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4.5 ★★★★★
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ProudPapa
Los Angeles, US
★★★★★ 5
Sixty Bucks? Yep. And I'd buy another one.
Color: silver
OK, I had my doubts. Yes, the iLevel2 is highly-reviewed. And yes, it's really (really) important to have your laptop screen at eye level (get it? iLevel?) But spending 60 dollars on an adjustable laptop stand? Couldn't I just pile up a couple of old books for free? Well, as a contractor once told me when I made a really dumb suggestion, "You COULD do it that way..." The iLevel2's main virtue is that the angle/height adjustment knob is rock-solid, as is the platform. It's just an extremely well-made, solid product. And the adjustment knob, which is on a left-right track on the front of the product, allows you to dial in your laptop's screen height to the millimeter. Result: a totally-custom, ergonomically-friendly setup. Love it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 13, 2024
R
Verified Purchase
Russ
Boise, US
★★★★★ 3
Underwhelming
Color: silver
Too much hype. It just holds the laptop. Buy something cheaper. The slide adjuster isn’t useful to me at all.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
B
Verified Purchase
beth
Battle Creek, US
★★★★★ 5
Useful but not perfect
Color: silver
Useful, but typing with laptop perched on it is unsteady. I use a separate keyboard.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2026
V
Verified Purchase
vics
Louisville, US
★★★★★ 5
Why are people trying to type on a laptop stand?
Color: silver
So the overwhelmingly negative reviews you'll notice for this product specifically surround the "bounciness" of this stand when someone is typing on it—however what is confusing to me is how people are purchasing a laptop stand in theory to optimize their ergonomics, yet also stretching their arms out and elevating them to type on said laptop once it's raised. the point of a laptop riser/stand is to elevate the screen so that you can maintain a more natural posture. One would assume you have an external keyboard to use in conjunction with your laptop once you place it on a RISER, because the idea is to elevate your laptop as a SCREEN and then have a level/flat surface to type on, thereby alleviating any awkward hunching or neck strain looking down or anywhere not naturally eye-level. as it is, it's a perfectly functional and elegant laptop riser. I don't find myself wanting to adjust the height often if ever, but in the one or two instances I experimented with it, found no mechanical issues. It looks nice with Apple hardware and allows me to have my laptop's screen flush with the bottom edge of my additional external monitor, so it serves my purposes well. for people complaining about how it bounces when they type on it ... STOP typing on your laptop's keyboard when you have it elevated on a riser! this defeats the purpose and probably also makes your arms tired—buy an external keyboard!
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Reviewed in the United States on December 2, 2020
J
Verified Purchase
Jack Leitner
Chelsea, US
★★★★★ 5
Nice Valet tray with Qi standard charger USB-C
Color: Best Dad-brown
I like this valet tray. I'm not fond of the message in the main compartment of the valet tray. It means they expect someone to buy it for their dad. I bought it for myself. What I like is the Qi standard compatibility of the wireless charger. It has many advantages over the wireless chargers that are sold. Most are round circles, so your phone teeters on the odd design. Some want to attach to my phone with some magnetic gimmickry. This valet tray takes a different approach. It has a built-in Qi standard wireless charger that's in a rectangular compartment. The USB-C wire that is USB-C at both ends is faster; that's the advantage of USB-C. It carries more power and higher data speed. But the Qi standard disables charging when the phone is at 100%. This avoids overcharging. It's an excellent design. The charging port is built-in to the side of the valet tray. Just the placement of the indicator light is under the phone. A fully charged phone doesn't trigger charging. It avoids overcharging. There is drawback the shallow USB port doesn't allow proper seating of USB C plugs this puts a lot of weight on a barely plugged wire.
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Reviewed in the United States on September 19, 2025

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