NanoGraphene Inc. Presents A Cutting-Edge Graphene Application

Cision PR Newswire ^ | July 21, 2017

[jonrick46]

"The degree of devastation that emissions [CO2] from the cement industry cause on the ecosystem is inestimable."

The fix is in. The environweenies will put a carbon tax on every sack of cement manufactured. The poor homeowner will be paying a ton to pour that back patio he wants to upgrade his home. Give all to the black hole of CO2-dom.

[pharmacopeia]

Constant innovation. I like. It’s fantastic that the best and brightest from around the world come here to be educated and innovate.

[Jayster]

“Carbon dioxide (CO2) a major greenhouse gas”

Major as in .04% of the Atmosphere..... yea thanks for the education.

[Moonman62]

Graphene is a commercial dud. My instincts tell me this company is probably a scam.

[chrisser]

So can I just buy a bag of graphene from this company and add it to my concrete mix, or is it more complicated than that?

[Anti-Bubba182]

Good question.

[Lurkina.n.Learnin]

“Graphene is a commercial dud”

Please elaborate?

[Tonytitan]

" It has also been revealed that carbon dioxide is the second most widely consumed substance on Earth after water."

Is that true? If it is, what's doing all the consuming? Is it/are they living, biological life forms? If so, they must produce a waste product. Would oxygen be that product? Goodness knows we can't have any of that! This CO2 consumption must be shut down immediately! This deadly oxygen will kill us all!

[pharmacopeia]

“”NanoGraphene’s pasta based graphene which can be added to cement without any equipment (...)”

It certainly sounds like all you do is use it as an additive.

[ProtectOurFreedom]

...bridges, dams and other concrete structures requiring very high tensile strength...

Yes, concrete is always the material of choice when high tensile strength is needed. /s

[Windflier]

"Studies have shown that about one ton of carbon dioxide is released from every ton of cement produced."

I was with the author up until that point.

A ton of concrete releases a ton of CO2? That doesn't even make sense. I might believe that concrete releases a similar amount of H2O during the curing process, but CO2?

Dude is releasing methane from his pie hole.

[Windflier]

The environweenies will put a carbon tax on every sack of cement manufactured.

The global warming scam is dying, plus we now have a president who won't stand for such nonsense. Additionally, the American people have enviro-catastrophism fatigue.

A CO2 tax is dead on arrival in this political climate.

[conservatism_IS_compassion]

"Studies have shown that about one ton of carbon dioxide is released from every ton of cement produced.”

I was with the author up until that point.

A ton of concrete^cement releases a ton of CO2? That doesn't even make sense. I might believe that concrete releases a similar amount of H2O during the curing process, but CO2?

I to was repelled by that. But not because what he is saying is bad chemistry, but because it is stage-1 thinking, as Sowell would put it.

Concrete is a mixture of cement and aggregates such as sand, gravel - and/or, in this case, graphene. The cement is made by heating limestone, producing the endothermic reaction

CaCO₃ —» CaO + CO₂

You can easily see that the mass of CO₂ byproduct will be comparable to the mass of CaO product. The chemistry is good, as far as it goes. But when you add water to the CO, what you are doing is facilitating the reverse, exothermal, reaction

CaO + CO₂ —» CaCO₃

. . . which over time converts the cement back into “limestone” (tho we don’t call it that, but rather, “set concrete” given that sand and gravel have been incorporated before the water was added.

I’m pretty sure I have that right, and the water is effectively a catalyst.

So when you actually use the cement, the CO₂ which you “evilly” added to the atmosphere in the process of making cement gets reabsorbed into the set concrete. No harm, no foul, even from the phoney AGW perspective.

But all that is aside from the point that the claimed properties of concrete with graphene incorporated are quite distinct from those of traditional concrete. Specifically, they claim that the stuff has significant tensile strength. Which is a property considered negligible when designing with traditional concrete. IMHO if nothing else, that property would recommend itself to anyone using concrete structurally in an earthquake zone.

Depending on how significant the tensile strength actually is, it would compete with steel reinforcing or even steel-prestressed design in concrete structures.

[ADemocratNoMore]

> The poor homeowner will be paying a ton to pour that back patio...

Don’t look now but I paid a ton ten years ago when I had a new driveway installed.

Also, going back some 20 odd years, I used to help out on home theater installations. We were frequently in million dollar plus homes that had just been built. I saw many newly pored basement floors that had hairline cracks. I was told that the mix had been changed due to new EPA regs.

[exodan]

carbon tax on every sack of cement manufactured

...and as usual, they left out one very important piece of information. The cement slabs/concrete is the biggest absorbent of Co2.

[Windflier]

Thanks for the educational reply. I don’t have the grounding to track with the chemical equations you presented, but your plain English explanations are perfectly understandable.

[conservatism_IS_compassion]

"visit visit https://nanographene.net.”

Not long ago producers had only one simple goal: make graphene at any price, whether through adhesive exfoliation or chemical processes. The early results included extremely expensive graphene with unpredictable properties, production techniques that were not scaleable and sometimes very harmful to the environment.

The basis of NG’s technique is the exfoliation of graphene plates from a larger sample of natural or synthetic graphite. This method involves the interaction of concentrated cavitation fields in a working solution of water and source graphite. The process takes place at low temperatures of 46 degrees Celsius or less and does not require the use of chemicals. Water from the working solution can be recycled and re-used multiple times. The single-stage simplicity of this method allows NG to produce graphene in industrial quantities at low cost.

. . . which begs the question of just what they mean by “low.”

A lot of trouble is undertaken to accommodate the very low tensile strength of concrete, including steel reinforcing and even prestressing. If the graphene actually delivered on the hype in this case, “low” cost would not have to mean zero.

introducing graphene to aluminum and magnesium renders them stronger than titanium.

If that is for real, the Navy should be beating a path to their door for material out of which to make submarines. And auto makers should be looking at pistons and connecting rods - and automotive unsprung mass, to improve ride and handling. E.g. tire reinforcing material . . .

[HandyDandy]

Graphene is a zero-gap semiconductor, because its conduction and valence bands meet at the Dirac points. The Dirac points are six locations in momentum space, on the edge of the Brillouin zone, divided into two non-equivalent sets of three points. The two sets are labeled K and K'. The sets give graphene a valley degeneracy of gv = 2. By contrast, for traditional semiconductors the primary point of interest is generally Γ, where momentum is zero. Four electronic properties separate it from other condensed matter systems.

[JoeFromSidney]

A ton of concrete releases a ton of CO2? That doesn't even make sense.

The CO2 is released when calcium carbonate (usually limestone) is heated to produce lime (calcium hydroxide) by driving off the carbon dioxide component into the atmosphere. When the lime in cement is used in concrete, it "sets" by absorbing CO2 from the atmosphere, turning back into calcium carbonate. The amount absorbed in setting is equal to the amount released to the atmosphere during the formation of the lime. On net balance, the CO2 contribution of concrete to the atmosphere is zero. However, if you look at only half the process, you can scare people with tales of CO2 released during the manufacture of cement.