SKU: 93082455584

Hydroxylated MWCNTs (short)10-20 nm

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Description

Hydroxylated MWCNTs (short)10-20 nmProduct Name NameHydroxylated MWCNTs short: 0 20 nm Product Overview Carbon nanotubes are simple substances composed of carbon atoms and can be regarded as hollow tubular structures formed by the curling of graphene. On the surface of carbon nanotubes, the carbon atoms are bonded to each other in the form of sp2 hybrid orbitals, which are arranged as hexagonal graphite layers. In theory, this regular hexagonal structure is perfectly evenly distributed

Product Name

Name:Hydroxylated MWCNTs (short:0-20 nm


Product Overview

Carbon nanotubes are simple substances composed of carbon atoms and can be regarded as hollow tubular structures formed by the curling of graphene. On the surface of carbon nanotubes, the carbon atoms are bonded to each other in the form of sp2 hybrid orbitals, which are arranged as hexagonal graphite layers. In theory, this regular hexagonal structure is perfectly evenly distributed over the entire surface of the carbon nanotubes. Topologically, the common structure and properties of graphene and carbon nanotubes are one of the important factors for their similarity. However, due to the curvature of the graphite layer in the carbon nanotubes, coupled with the defects that may occur during the growth process, the sp3 hybrid phenomenon may occur in the six-membered ring structure on the surface of the carbon nanotubes, resulting in the emergence of five-membered rings or seven-membered rings. Carbon nanotubes can be divided into single-walled carbon nanotubes, double-walled carbon nanotubes and multi-walled carbon nanotubes according to the graphite sheets with different number of layers.

There are many kinds of preparation processes and methods for carbon nanotubes, and carbon nanotubes with corresponding properties and structures can be prepared by different methods. At present, the main methods for preparing carbon nanotubes include graphite arc method, laser graphite evaporation method and chemical deposition method. Chemical deposition method has the advantage of large-scale production and is widely used at present.


Technical Parameter

 

Color:black

-OH Content:3.06wt%(For reference only)

OD:0-20nm

ID:-10nm

Purity:gt;95 %

Length:.5-2um

True density: ~2.1 g/cm3

EC:>100s/cm


Product characteristics

High purity: Most of the metal impurities are removed under high temperature treatment of the carbon tube.

It has good flexibility and elasticity and can withstand large deformation without breaking. For example, in some micro-mechanical parts, complex movements can be achieved using their flexibility.

Electrical properties:

It has good electrical conductivity, and the electrical conductivity can be close to copper.

Exhibit unique quantum conductivity properties. For example, in nanoelectronic devices, their conductance characteristics contribute to precise current control.

Thermal properties:

The thermal conductivity is very high and can effectively conduct heat.

Good thermal stability, can still maintain the stability of structure and performance in high temperature environment. This makes it a potential application in highly efficient cooling materials, such as the cooling components of high-power electronic devices.

Chemical properties:

High chemical stability, not easy to react in most chemical environments.

The surface can be chemically modified to meet different application requirements. For example, it can be better dispersed in certain solvents or substrates through chemical modifications.

Optical properties:

It has unique optical absorption and emission characteristics in the near infrared and visible regions.

It can be used to make optical sensors and light-emitting devices.

 

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SKU: 93082455584

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Verified Purchase
Audiophile
Lowell, US
★★★★★ 5
The best amplifier Ive had since my 1985 Yamaha R-7.
Style: 7.2 Receiver
The Yamaha rx-v6a, tsr-700, and yes, the rx-a2a, are all pretty much the same AVR, on the same firmware channel. Same power, same dacs, same dac implementation, same output stages, same construction, they’re the same. The a2a has a 5th foot, and 2 ten thousand micro farad capacitors in the power supply, while the v6a and tsr-700 have 2 eighty-one hundred micro farad capacitors in the power supply, and only 4 feet. These 2 tiny differences make no difference in sound quality or reliability, whatsoever. All three are simply awesome. From the DACS to the amps, and everything in between, these Yamahas sound better and out perform all the others. The HDMI boards have all been updated, and the firmware is mature. To even match these in sound quality and reliability and longevity, you would have to spend many thousands of dollars. Of the rx-v6a, the tsr-700, and the rx-a2a, which ever one is on sale for the least, get that one, because they’re the same device. In this case, that’s a good thing because you’ll love them.
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Reviewed in the United States on January 16, 2025
W
Verified Purchase
Working Dad
Chelsea, US
★★★★★ 5
Yamaha quality, solid audio
Style: 7.2 Receiver
Best in class YAMAHA .... better than DENON or ONKYO in my opinion. DENON and ONKYO both have issues with overheating and then shutting down. Yamaha cruises along on same power level without any hiccups.
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Reviewed in the United States on March 24, 2026
R
Verified Purchase
Robert
Waukegan, US
★★★★★ 5
SOUND - is Amazing, Incredible and better than the movie theater!
Style: AVR-X1800H
Arrived quickly. Setup was easy for for quick start, but to fine tune will take a good deal of effort (fun for me so no issues). OK, SOUND - is amazing, incredible and better than the movie theater! (paired with Klipsch 5.1, but will turn it into a 7.2). Drowns out my neighbors dogs which bark all the time - this system can get loud but the clarity is crisp and clean. Recall 20 years ago this system would have cost $10k plus for everything, now set me back around $1500 for all. But this review is on the receiver and it is superb! Looks brand new, has sufficient warranty and 90-day return option so more than enough time to try and determine for yourself. The price is about $2-300 lower than a new one and every bit as effective so I definitely recommend this product to anyone that wants a very high quality home theater at a super low price point. Entry level to experienced, this receiver should satisfy all.
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Reviewed in the United States on April 20, 2025
S
Verified Purchase
Sean
Alexandria, US
★★★★★ 5
Sound quality
Style: AVR-X1800H
Great sound for home entertainment center and surround sound for watching hd movies
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Reviewed in the United States on February 1, 2026
K
Verified Purchase
KB
Houston, US
★★★★★ 5
8.5 sound out of the box! (Want bespoke configs? Sorry.) Great Value, Easy Setup
Style: AVR-X1800H
Excellent unit. Off the shelf sound is very nice, but every room is different, so a bit of tweaking is usually required. Accessing the EQ settings takes a bit of sleuthing and the use of its app... which is subpar. The app interface can only be explained as designed by people who must not actually use it. Still, a wonderful machine at a fair price. I run in ECO mode and it powers my 35x47 room with plenty of power to spare and NEVER gets hot. I am running Infinity Reference speakers and a Klipsch sub in a 7.1 config. I highly recommend the use of the included Audyssey calibration microphone! My prior experience with Yamaha YPAO left me wondering what was the point. This time with the Denon, it set up the speakers, (i'm embarrassed to say) better than I did on my own. (To be fair, I'm sure Yamaha has improved its YPAO in the decade since my prior purchase) Bottom line. If you want maximum flexibility on EQ. Shop a different solution. However, If you want quality sound with 4K and up to and including ATMOS processing, with minimal tweaking, or just want to unbox and play, this is a wonderful unit at a very fair price.
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Reviewed in the United States on April 20, 2025

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