Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

Darkest nonflamable material you can buy?

G

godpower

0
Joined
Mar 6, 2012
Messages
47
Points
6
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?
 





Teej

Teej

0
Joined
Apr 16, 2014
Messages
520
Points
48
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.
 
tttonyyy

tttonyyy

0
Joined
Dec 9, 2014
Messages
116
Points
18
A plumbers solder mat perhaps? Can take a good blowtorching so should be pretty laser-resistant.
 
I

ixfd64

0
Joined
Sep 12, 2007
Messages
1,174
Points
48
What do you need the material for? Are you looking to make a beam dump?
 
Marco Polo

Marco Polo

0
Joined
Nov 2, 2012
Messages
626
Points
43
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".
 
USAbro

USAbro

0
Joined
Oct 16, 2014
Messages
1,006
Points
0
May sound weird but black colored pencil on metal is good. Is does not burn as you would think, and is super light absorbent.
 
L

LSRFAQ

0
Joined
May 8, 2009
Messages
1,155
Points
83
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:
Phased Array

Phased Array

0
Joined
Nov 25, 2014
Messages
31
Points
6
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).
 
Shakenawake

Shakenawake

0
Joined
Mar 11, 2013
Messages
1,541
Points
83
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.
 
spaceman

spaceman

0
Joined
Sep 20, 2014
Messages
57
Points
0
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
 
You must log in or register to reply here.




Top