NIR-blocking plastic
NIR-blocking plastic
(OP)
This seems like the best forum for this...
Looking for a (preferably US) supplier of near-infrared blocking plastic, particularly in the 1-1.1um range. So far, everything I've found has been listed as a specialized item for blocking of fiber/YAG laser beams... which is fine, but I would prefer not to pay $150/square foot for something I may be able to get for 1/10th the price simply because it was marketed towards a specific use. If that's the best I can expect, though, feel free to tell me that.
Looking for a (preferably US) supplier of near-infrared blocking plastic, particularly in the 1-1.1um range. So far, everything I've found has been listed as a specialized item for blocking of fiber/YAG laser beams... which is fine, but I would prefer not to pay $150/square foot for something I may be able to get for 1/10th the price simply because it was marketed towards a specific use. If that's the best I can expect, though, feel free to tell me that.
Dan - Owner
http://www.Hi-TecDesigns.com






RE: NIR-blocking plastic
Dan - Owner
http://www.Hi-TecDesigns.com
RE: NIR-blocking plastic
Note, I work for a company that sells that kind of mica as part of my job so that's how I heard of the patent. Adding that to a plastic is way, way cheaper than what you described.
Chris DeArmitt PhD
President - Phantom Plastics LLC
Trusted adviser to leading companies around the world
www.phantomplastics.com
RE: NIR-blocking plastic
Dan - Owner
http://www.Hi-TecDesigns.com
RE: NIR-blocking plastic
For laser shielding/safety purposes (i.e. part must meet some standard)? Pay the money.
Tricky problem, as no material really absorbs well in that range, other than some fairly weird dyes, or purpose-made coated glass filters.
...maybe PVA would work, if kept wet. This seems to corroborate: http://www.google.com/patents/EP0989419B1?cl=en
..EVA too, http://www.azom.com/article.aspx?ArticleID=10469
PE and PMMA both have weak absorption lines around 1.1-1.3 mu-m, you could try multiple thin layers of these.
Some PET bottles may be blown from material with a fair amount of near-IR absorbing materials, given this patent: http://www.google.com/patents/WO1998008895A1?cl=en
Finally, there are low-e glasses out there, with coatings for low infrared transmission, but most of the curves I could find only just start at 1 micron.
RE: NIR-blocking plastic
Dan - Owner
http://www.Hi-TecDesigns.com
RE: NIR-blocking plastic
RE: NIR-blocking plastic
One suggestion that might work is a nitrocellulose plastic (old style 35mm film stock), the N-H (about 1 micrometer) and C-N (about 1.3 micrometer) bonds apparently resonate in overtones and absorb weakly in the region of interest. 2nd problem is, it's flammable as heck - nitrocellulose is also known as guncotton, and is a primary component in modern smokeless gunpowders...which is why I didn't mention it before.
Probably more than you really wanted to know.
RE: NIR-blocking plastic
And one can never have too much info...
Dan - Owner
http://www.Hi-TecDesigns.com
RE: NIR-blocking plastic
Chris DeArmitt PhD
President - Phantom Plastics LLC
Trusted adviser to leading companies around the world
www.phantomplastics.com
RE: NIR-blocking plastic
Dan - Owner
http://www.Hi-TecDesigns.com
RE: NIR-blocking plastic
Some info here...
http://www.ptonline.com/articles/novel-permanent-u...
Any number of compounders would be happy to mix it in for you.
The inventor is Joe Webster at www.stabilization-technologies.com if you want direct contact.
Chris DeArmitt PhD
President - Phantom Plastics LLC
Trusted adviser to leading companies around the world
www.phantomplastics.com
RE: NIR-blocking plastic
RE: NIR-blocking plastic
Chris DeArmitt PhD
President - Phantom Plastics LLC
Trusted adviser to leading companies around the world
www.phantomplastics.com
RE: NIR-blocking plastic