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Darkest nonflamable material you can buy?

G

godpower

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I heard about the material vantablack which absorbs over 99.5% visible light.
This material is so dark even if the surface is uneven and bent it looks perfectly flat and two dimensional.

Imagine pointing your 1W laser at it,the dot will appear 5mw.
Sadly such a material isn't exactly easy to get a hold of.

Does anyone know of any very very dark materials you can buy which won't burn?
 





Its less the color, and more the microtexture that tends to absorb the light.

If you look at coatings for solar collectors, they tend to be very good in that regard.
 
A plumbers solder mat perhaps? Can take a good blowtorching so should be pretty laser-resistant.
 
What do you need the material for? Are you looking to make a beam dump?
 
Flat black spray paint on sheet metal works. The paint absorbs the beam and the metal dissipates the heat. Never a problem with it. With enough power and/or focus you might smoke the paint in spots, but it won't burst into flames, so to my mind that is sufficiently "non-flammable".
 
May sound weird but black colored pencil on metal is good. Is does not burn as you would think, and is super light absorbent.
 
Carbon Felt. Carbon Wool. Activated Carbon, Carbon deposited by a smoky flame.

Platinum Black.

Flat Black Krylon Engine Paint.

Certain grades of graphite rods for welding.

Texture matters. Often adding a GLOSSEY binder such as clear paint or sodium silicate helps.

There are hundreds of scientific papers on the subject.
Steve
 
Last edited:
Carbon Fiber Felt(Top Secret Steiner Stuff), but it's pricey and it works. I've used it on Acetylene welding, silver soldering and brazing for thermal shielding. I can used a flame on one side turn it bright orange and not feel it on the other side of it's 1/4 inch thickness.
It's a little on the glossy side for lasers, but it's pure black(carbon).
 
carbon aerogel?

from wikipedia:

Carbon aerogels are also extremely "black" in the infrared spectrum, reflecting only 0.3% of radiation between 250 nm and 14.3 µm, making them efficient for solar energy collectors.
 
Phased Array said:
Carbon Fiber Felt(Top Secret Steiner Stuff), but it's pricey and it works. I've used it on Acetylene welding, silver soldering and brazing for thermal shielding. I can used a flame on one side turn it bright orange and not feel it on the other side of it's 1/4 inch thickness.
It's a little on the glossy side for lasers, but it's pure black(carbon).
Click to expand...

I've been looking for something similar. I found this, which doesn't look too glossy, and is reasonable as far as price goes:

Tillman Welding Blanket - Thermofelt 615
 
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