SKU: 16704906406

Low purity single-walled carbon nanotubes (short)

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Description

Low purity single-walled carbon nanotubes (short)Product Name Name Low purity single walled carbon nanotubes (short) Product Overview Carbon nanotubes, also known as buckytubes, can be viewed as seamless hollow circular tubes formed by winding a single layer of graphite hexagonal grid plane along chiral vectors, with carbon atoms typically capped at both ends in pentagons. Therefore, the carbon atoms in carbon nanotubes are mainly sp2 hybridized, and once the hexagonal network structure forms a

Product Name

Name :Low purity single-walled carbon nanotubes (short)


Product Overview

Carbon nanotubes, also known as buckytubes, can be viewed as seamless hollow circular tubes formed by winding a single layer of graphite hexagonal grid plane along chiral vectors, with carbon atoms typically capped at both ends in pentagons. Therefore, the carbon atoms in carbon nanotubes are mainly sp2 hybridized, and once the hexagonal network structure forms a spatial topology, a certain sp3 hybridization can be formed. The diameter of SWCNT is generally between 1-2 nm. Single walled carbon nanotubes can reach lengths of micrometers, even millimeters and centimeters, with a large aspect ratio and superior electrical, mechanical, and thermal properties.


Technical Parameter

OD:-2 nm

Purity:gt;60%

Length:-3um

SSA:gt;407m2/g

Tap density:.14 g/cm3

True density:~2.1 g/cm3

EC:gt;100s/cm


Product Features

Excellent conductivity: It has excellent conductivity, high conductivity, low resistance, and can efficiently transmit current. For example, its conductivity can be comparable to excellent conductors such as silver and copper.

High thermal conductivity: It has excellent thermal conductivity and can quickly transfer heat. It has potential application value in electronic devices and thermal management systems that require efficient heat dissipation.

Unique mechanical properties: possessing high strength and toughness. The tensile strength can reach 100-200 GPa, and the Young's modulus can reach about 1 TPa, which makes them have great potential for enhancing the mechanical properties of composite materials.

Nanoscale effect: The diameter of the tube is generally around 1-2 nm, which has unique properties brought by small size. For example, due to quantum confinement and surface effects, they exhibit different characteristics from macroscopic materials in terms of interactions with other substances and electron transport.

High chemical stability: It has good stability in general chemical environments and is not easily reacted with acids, bases, oxidants, etc., which enables them to maintain stable performance in various complex application environments.

Diversified forms: Different forms such as bundles, films, and networks can be formed to meet different application needs.

Optical performance: It has absorption and scattering effects on specific wavelengths of light, and can emit light under certain conditions, which has potential applications in optoelectronic devices.

High flexibility: It can bend and fold without breaking, which has advantages in the manufacturing of flexible electronic devices.


Application Fields

In the field of electronics: Due to their unique electrical properties, single-walled carbon nanotubes can be used to manufacture smaller and more efficient integrated circuits, field-effect transistors, and flexible electronic devices.

In the field of energy, single-walled carbon nanotubes can be used as electrode materials in lithium-ion batteries, which can increase the battery's charge and discharge performance and cycle life; It can also be used to manufacture supercapacitors, improving the energy density and power density of capacitors.

Composite materials: Adding single-walled carbon nanotubes to polymers and other materials can significantly improve their strength, stiffness, and toughness.

Sensors: Utilizing their high sensitivity and selectivity towards gases and chemicals, they can be used to detect biomolecules and cells, among others.

Nanomachinery: Single walled carbon nanotubes can serve as key components for constructing micro machines, such as nanomotors.

Aerospace: Used for manufacturing lighter and stronger aircraft and spacecraft components.

Other fields: It also has applications in catalysts, field emitters, conductive films, and biological nanomaterials.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

     

 

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SKU: 16704906406

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4.6 ★★★★★
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andrew
Massapequa, US
★★★★★ 5
Great value watch with all the basic functions.
This is a solid watch for the money. I think if you are looking for a training watch that doesn't break the bank, this is a good option. I looked at a ton of options, and I know there are some even cheaper entry level options, but this Ironman was a little bit of a step up in appearance and quality. To me it's worth it to get this over something in that $20 to $30 range. The Ironman was more stylish and less bulky than a lot of those options. This watch has a nice sized face that makes it easy to see without being so large that it's too much. There are some of these entry level sports/military watches that are just enormous. I'm not a huge guy so this was a much better option. One thing I am really liking is how flexible the strap is. The material has a nice give to it making it a very comfortable watch to wear. I've had some watches in the past where the bands were just too stiff and made the watch very uncomfortable. It's easy to understand and operate. I didn't even read the manual and had everything figured out after 5 or so minutes. Unless you are really going to step up and get a GPS smart watch in the $200 and up range, this watch is a great option.
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Reviewed in the United States on September 15, 2018
F
Verified Purchase
FJ
Waukegan, US
★★★★★ 5
Great watch for healthcare workers
This is a great watch that I use for my nursing clinical rotations at hospitals. It has been washed and disinfected many times and it still looks new. I can read the time without my glasses I wear for astigmatism. The light is good for nighttime or darkened rooms. I think the alarm and hourly chime are harsh sounding, but they serve their purpose if needed (The beep of a Casio digital watch is preferred, for a frame of reference).
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 5, 2026
S
Verified Purchase
Shawn Hughes
Fort Morgan, US
★★★★★ 4
used solely as start watch for yacht racing: interface is good (lacks sync feature). Great value
on foredeck of a sailboat, lines and sails love to snag on stuff, especially wrist watches. Have had three torn from my wrist in 18 months. Two went overboard. I even tried to purchase super-strong spring-bars (pins that secure the band), but it was torn off again. PRO: great (intuitive, quick) interface for setting the countdown starting time, and option to repeat or count up. easy to read display CON: No sync feature: in countdown timer mode, would allow adjusting the running countdown to the nearest minute. Delay in switching modes: had left it in time-of-day mode and heard a starting signal, immediately switched to Timer mode and pressed start button, but it did not start the timer. On switching modes, it takes nearly a second for Timer mode to be operational, so need to wait until display comes on before trying to use it. Time-of-day is not visible in Timer Mode, if it was, previous issue would rarely occur. No Power down feature: my previous watch had an option to shut off the LCD display (and any audible alarms). Since I only use the watch about 100 hours (1%) of the year, this greatly extended the battery life. All that said, the dedicated sailing watches all cost two to ten times as much with the lower cost options having poor reviews on quality. For now, I'll buy these (Timex Ironman Essential 30) and just expect to loose one on average once a year.
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Reviewed in the United States on June 3, 2024
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Verified Purchase
Glenn
Bozeman, US
★★★★★ 5
Great watch - Nice large display!!
After my old Timex Ironman finally died after 21 years of reliable service (may it rest in peace after 4 replacement bands and 5 replacement batteries!!), I decided Timex deserved another sale from me! So I went surfing on the Timex website. So many Timex Ironman watches to choose from! But this one stood out for two reasons. 1) It has a nice simple design without a lot of "noise". 2) A nice large readable display. So I took the plunge! Indeed, Timex has definitely improved on their Ironman watches in the last 21 years. Most notably, the Indiglo light has greatly improved. It used to just light up the background. Now, it brightly lights up the actual digits which makes it undeniably readable without any eye strain. Another great improvement are in the set features. While the older models could only be set forward (in other words, if you went past your set point, you would need to go all the way around), this model lets you set forward and backward (so if you go too far, you can step back without going around). I don't understand one of the reviewers saying that the watch is too small. The face is quite large. The band may seem narrow in proportion to the watch face, but not excessively so. The band is 19mm wide and fits me just fine. Highly recommended!!
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Reviewed in the United States on November 12, 2017
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Verified Purchase
RS
Birmingham, US
★★★★★ 5
Like it so far after 2 weeks of swimming.
Like it so far after 2 weeks of swimming. Have been careful nio to press buttons underwater. I Like the large numerals, backlight, countdown timer, stopwatch and alarm. My last Timex 1440 lasted 10 years before the battery was low enough that the backlight was too weak to see at night. I replaced the battery on it but did not seal the o ring well enough with silicon grease so it leaked and quit working. I also had also replaced the band once.
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Reviewed in the United States on September 9, 2024

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