Transparent plastics that are opaque to longwave UV light?
Transparent plastics that are opaque to longwave UV light?
(OP)
Hi, I am new to the forums, I am working on a project that would require a plastic similar to lexan or plexiglass that's transparent at visible wavelengths but opaque or nearly opaque at longwave UV wavelengths. Is there such a plastic on the market?





RE: Transparent plastics that are opaque to longwave UV light?
Regards
Pat
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RE: Transparent plastics that are opaque to longwave UV light?
1. It contains polybutadiene which has double bonds in it which should adsorb UV
2. The rubber particles are the right size to scatter UV and the refractive index in the UV range is different than to visible light so the particles and matrix will have a mismatch (strong scattering)
In addition to that it's an easy matter to add some UV adsorber
The same as above should hold true for some other rubber particle impact modified polymers like PMMA.
All the best,
Chris
Chris DeArmitt
Plastic & Additives Webinars
Training the Fortune 500 since 2003
www.plastictraining.com
RE: Transparent plastics that are opaque to longwave UV light?
RE: Transparent plastics that are opaque to longwave UV light?
Acrylic it the clearest material you will get and is considerably clearer than clear ABS.
It can be treated with UV absorbers. A master batch supplier should be able to provide data on transmission or absorption curves for various UV absorbers. I have data somewhere for natural acrylic. Ciba used to be the company of repute in the UV absorber field.
Regards
Pat
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RE: Transparent plastics that are opaque to longwave UV light?
RE: Transparent plastics that are opaque to longwave UV light?
It took me a whole 3 seconds to find this on google.
Regards
Pat
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RE: Transparent plastics that are opaque to longwave UV light?
http://ww
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www.tynevalleyplastics.co.uk
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RE: Transparent plastics that are opaque to longwave UV light?
If money is no object, then high quality filters can be developed and used.
TTFN
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RE: Transparent plastics that are opaque to longwave UV light?
RE: Transparent plastics that are opaque to longwave UV light?
Regards
Pat
See FAQ731-376: Eng-Tips.com Forum Policies for tips on use of eng-tips by professional engineers &
http://eng-tips.com/market.cfm
for site rules
RE: Transparent plastics that are opaque to longwave UV light?