SKU: 85283029911

Graphitized MWNTs 30-50nm

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Description

Graphitized MWNTs 30-50nmProduct Name Name Grapheitized MWNTs 30 50nm Product Overview The CVD method for preparing carbon nanotubes is widely used because of its advantages such as mature method and high yield. However, the preparation of carbon nanotubes by CVD method often requires the introduction of a catalyst, and the nanotubes grow gradually along the radial and axial directions with the catalyst particle as the center. The difficulty of removing the catalyst has

Product Name

Name :Grapheitized MWNTs  30-50nm


Product Overview

The CVD method for preparing carbon nanotubes is widely used because of its advantages such as mature method and high yield. However, the preparation of carbon nanotubes by CVD method often requires the introduction of a catalyst, and the nanotubes grow gradually along the radial and axial directions with the catalyst particle as the center. The difficulty of removing the catalyst has become an important factor restricting the purity of the carbon tube, which will limit the application of the carbon tube to a certain extent. Graphitized carbon tube is the ordinary carbon tube in the inert atmosphere of high temperature treatment, can effectively remove the catalyst and other impurities, effectively improve the purity of the carbon tube, reduce defects, effectively improve its microstructure, in order to obtain good electrical, thermal, mechanical and other properties. The higher the degree of graphitization, the better the crystallinity, thermal stability and electrical conductivity of the carbon nanotubes are generally better.


Technical Parameter

Color:Black

OD:0-50 nm

ID:5-12nm

Purity:gt;99.9%

Length:lt;10um

SSA:gt;30 m2·g-1


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.


Application Fields

Battery electrode: graphitized carbon nanotubes can be used as a conductive agent for lithium batteries to improve the conductivity and cycle life of the battery.

Composite materials: By adding graphitized carbon nanotubes to substrates such as polymers, metals or ceramics, composites with high strength, high electrical conductivity and high thermal conductivity can be prepared.

Electronic devices: Integrated circuits based on semiconductor graphitized carbon nanotubes and display backplane drivers are being developed.

Sensor parts: graphitized carbon nanotubes have the characteristics of high sensitivity and fast response, and can be used to prepare gas sensors, biosensors, etc.

Electric heater parts: Using the good electrical conductivity and electric heating conversion performance of graphitized carbon nanotubes, efficient electric heater parts can be prepared.


Related Information

Please e-mail for the detailed characterization data.

E-mail:[email protected]

 

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4.6 ★★★★★
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Product Reviews
R
Verified Purchase
Rachel S.
Phoenix, US
★★★★★ 5
Exquisite, enrapturing
Format: Paperback
Loved the gritty, visceral language and the epic nature of this poem. Notely blows me away -- the loss of memory, the tangled and eternal subway, the owls and masks.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2014
E
Verified Purchase
Eileen O Malley Callahan
Belleville, US
★★★★★ 5
Five Stars
Format: Paperback
Brilliant, lucid, engaging and brave, a feminist chthonic journey shimmering with poetic bravado.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 18, 2014
J
JeFF Stumpo
Massapequa, US
★★★★★ 5
A Feminist Divine Comedy?
Format: Paperback
Let me start with this: The Descent of Alette is difficult to read at first. Notley "puts quotation marks around" "groups of words" "in lines" "that can be off-putting." Note that I'm not quoting from the book there, just giving an example of what the book's text appears like. This forces us to read more slowly, taking in each line a few words at a time. What appears to be awkward is in fact a great solution to the speed-reading most of us do these days. That being said, it's troublesome for the first few poems, less so after that, virtually invisible by the end of the first section. When talking about this book, I immediately compare it to Dante's Divine Comedy, and I commonly see others do the same (see an earlier review here on Amazon.com). Exchange Hell for a subway, and you've basically got it: an underground realm ruled over by a Tyrant, poor souls being tortured, though in this case there is no indication that they have done anything to deserve it. Notley's language might not be quite as beautiful/harsh as Dante's, but her images stand with anything he created. After introducing two characters on a subway, a woman and her baby, both on fire, Notley writes: "another woman" "in uniform" "from above ground" "entered" "the train" "She was fireproof" "she wore gloves, & she" "took" "the baby" "took the baby" "away from the" "mother" "Extracted" "the burning baby" "From the fire" "they made together" "But the baby" "still burned" ("But not yours" "It didn't happen" "to you") "We don't know yet" "if it will" "stop burning," "said the uniformed" "woman" "The burning woman" "was crying" "she made a form" "in her mind" "an imaginary" "form" "to settle" "in her arms where" "the baby" "had been" "We saw her fiery arms" "cradle the air" "She cradled air" ("They take your children" "away" "if you"re on fire") "In the air that" "she cradled" "it seemed to us there" "floated" "a flower-like" "a red flower" "its petals" "curling flames" "She cradled" "seemed to cradle" "the burning flower of" "herself gone" "her life" ("She saw" "whatever she saw, but what we saw" "was that flower") After surviving the horrors of the subway, Alette goes even deeper underground, passing through a series of psychological challenges that at times seem straight out of Freud, at times out of Classical mythology, at times out of collective dreams. Throughout it all, we learn more and more about Alette, who is not just a "hero" who goes through the motions necessary to the plot, but who considers and stumbles and is confused and learns. The third section of the book is a rebirth, wherein Alette finds a source for a stronger power than the Tyrant's, and it is distinctly feminist in its nature. I need to note here for those who react to feminism in a knee-jerk way: Notley's feminism is not a militant feminism, though it requires brief "military" action on Alette's part. Men are helpful in the story, have purpose besides being the bad guy. If anything, what Notley attacks in the form of the Tyrant is the idea of a corrupt masculinity, a kind of Big Brother who would easily stand as an antagonist in any number of 20th/21st century literary works. Alette's feminism is the discovery of her place in the world, and that place is not slaving away mindlessly for the Tyrant, not acting as just a womb or pair of hands or pretty face. It's a nuanced message, despite the epic (and therefore presumably black-and-white) nature of the whole book. The fourth section is the showdown with the Tyrant, a great deal of philosophizing, and an ending that I actually find more satisfying than that of Paradiso. I won't spoil it here, but it just works extremely well in conjunction with the themes of Descent as a whole. If you want to be challenged, if you want to think deep thoughts, if you want surreality and magic, pick up The Descent of Alette. For even more interesting reading from the author and her partner, you could also turn to The Scarlet Cabinet, which contains but actually predates the on-its-own publication of Descent.
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Reviewed in the United States on October 11, 2010
K
Kent Shaw
Battle Creek, US
★★★★★ 5
A Contemporary Epic
Format: Paperback
I have a complicated relationship with most of the books I've read by Alice Notley. I admire her facility with the lyric, her ability to get just beneath a concept or sentiment using a very talk-y style so that I always feel like I'm with whatever speaker she's using, inside that mind and her mind all at once. This is a good kind of complication. It's one I yearn for with poems. The unpleasant complications are when I feel as though I'm just being subjected to her unedited notebook entries. Too much, too much, too much. It comes up especially with her book Mysteries of Small Houses. I mention these difficulties only to sharpen the accomplishment of The Descent of Alette. Like other reviewers, I feel the tonal similarities to Dante's Inferno. Which becomes a subversive allusion considering Alette seeks after a male Tyrant in order to destroy him, while Dante sought after his Beatrice out of desire. But I read and reread Alette, because Notley continually subverts patriarchal conventions in the book. I actually find I crave the speaker's intellect, and the mythic logic that gives the book its arc. I want it more. Yes, there are quotations around each fragment in the poems. I actually appreciate them for slowing my reading down, and for sharpening my focus on the use of Notley's language. And it's not just a stylistic tic, or something to be endured. It could actually be described as further subversion of The Tyrant Alette pursues.
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Reviewed in the United States on August 25, 2011
R
Verified Purchase
Raquel Wilbon
Battle Creek, US
★★★★★ 2
Imagery and diction
Format: Paperback
This book was very challenging to read because everything was written in quotations however, it was intriguing as a different way of writing poetry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 11, 2020

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