Green Building Forum - Graphene paint greenwash? Tue, 19 Dec 2023 07:57:32 +0000 http://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 Graphene paint greenwash? http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274529#Comment_274529 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274529#Comment_274529 Wed, 10 Jul 2019 22:36:53 +0100 djh
It seems like overhyped greenwash to me, but I'd be interested in any other views.]]> Graphene paint greenwash? http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274530#Comment_274530 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274530#Comment_274530 Thu, 11 Jul 2019 09:55:46 +0100 Mike1
corrosion resistant - my walls don't often rust.

200 times stronger than steel - if you compare both in a layer 1 atom thick, but what about the strength of the paint layer? Enough to resist Sellotape (which is all you need to make your own graphene sample, BTW)?

1000 times more conductive than copper - if you compare both in a layer 1 atom thick, but mixed in paint? If it actually was, would that make it dangerous in a bathroom, or useful for equipotential bonding?

greater flexibility without damage - enough to be used on silicone sealant without flaking?

supports the natural mineral elements of the paint - first define 'support'

eases application - is painting that difficult?

reduces maintenance - how does it compare to Teflon, or the glass flake epoxy coating on the Forth Bridge?

faster painting - by what %age?

improves thermal regulation - by a noticeable amount?

requires less heating / air conditioning - by a noticeable amount?]]> Graphene paint greenwash? http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274531#Comment_274531 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274531#Comment_274531 Thu, 11 Jul 2019 11:19:11 +0100 fostertom Posted By: Mike11000 times more conductive than copperA Faraday cage then? Kills phone signal/wifi (v gd)? Protection against 5G radiation?]]> Graphene paint greenwash? http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274532#Comment_274532 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274532#Comment_274532 Thu, 11 Jul 2019 12:41:15 +0100 CWatters
https://www.organicnaturalpaint.co.uk/natural-paint/natural-wall-paint-colours-gcs-interior-graphenstone/

Graphite occurs in nature but I wasn't aware of significant quantities of Graphene occurring in nature. A bit of googling found it does..

https://www.proactiveinvestors.co.uk/companies/news/106773/alabama-graphote-soars-on-evidence-of-more-naturally-occurring-graphene-106773.html

However they say..

Quote

Despite the variety of research methods, nobody has managed to extract graphene such as to realize production on the mass scale required for commercial viability. Research and development costs remain exorbitant.]]> Graphene paint greenwash? http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274533#Comment_274533 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274533#Comment_274533 Thu, 11 Jul 2019 12:51:35 +0100 WillInAberdeen Posted By: fostertom
Posted By: Mike11000 times more conductive than copper
A Faraday cage then? Kills phone signal/wifi (v gd)? Protection against 5G radiation?

Saw this today and thought of you Tom:


"Keeping it private … Barack Obama is briefed in a tinfoil-lined tent on the situation in Libya, 2011. Photograph: Pete Souza/Official White House Photo"
https://www.theguardian.com/world/2019/jul/11/can-we-talk-in-confidence-the-death-of-candour-in-the-age-of-surveillance#img-3]]> Graphene paint greenwash? http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274534#Comment_274534 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274534#Comment_274534 Thu, 11 Jul 2019 12:59:23 +0100 CWatters
https://www.amazon.co.uk/Graphene-Concrete-Additive-Strengthener-Plasticiser/dp/B07D6DJRMV/ref=sr_1_8?adgrpid=61701994508&gclid=CjwKCAjwvJvpBRAtEiwAjLuRPdliHLDDtDKQ4FgjulGED1msEO_N1F1DPn2KqHTAymxfu8RCmpCvGRoC7HUQAvD_BwE&hvadid=259092291582&hvdev=c&hvlocphy=9044886&hvnetw=g&hvpos=1o3&hvqmt=b&hvrand=10169309955773201114&hvtargid=kwd-447382541&hydadcr=25070_1834484&keywords=graphene&qid=1562846034&s=gateway&sr=8-8

If it makes your concrete stronger then presumably you need less concrete which makes it green :-)]]> Graphene paint greenwash? http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274535#Comment_274535 http://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=16170&Focus=274535#Comment_274535 Thu, 11 Jul 2019 15:25:12 +0100 djh
They then compound this by wording it so it looks like it absorbs this amount every year, by comparing the total amount absorbed over its lifetime to the amount a tree absorbs every year.

Comparisons are made against synthetic paints and limewash but notably not against silicate mineral paints which are the first thing to look at for low-maintenance, natural ingredients, low emissions paint. Nor against clay paint for that matter.

The TV article showed the paint being rollered on, apparently achieving good coverage in a single coat, so it's definitely different to limewash or silicate paints in that regard and easier to use I guess.

I don't understand the claims about high conductivity, either electrical or thermal. I can't see how flakes of a conductor surrounded by a ceramic binder will achive that. But more importantly, I can't see why it matters.

I don't see the point/advantage of a two-dimensional material in concrete either. It notably doesn't claim any increase in tensile strength, which is what conventional fibre additives are measured on AIUI.]]>