enow.com Web Search

Search results

1. Results from the WOW.Com Content Network

2. Photopolymer - Wikipedia

   en.wikipedia.org/wiki/Photopolymer

   A photopolymer or light-activated resin is a polymer that changes its properties when exposed to light, often in the ultraviolet or visible region of the electromagnetic spectrum. [1] These changes are often manifested structurally, for example hardening of the material occurs as a result of cross-linking when exposed to light.

3. UV curing - Wikipedia

   en.wikipedia.org/wiki/UV_curing

   UV curing (ultraviolet curing) is the process by which ultraviolet light initiates a photochemical reaction that generates a crosslinked network of polymers through radical polymerization or cationic polymerization. [1] UV curing is adaptable to printing, coating, decorating, stereolithography, and in the assembly of a variety of products and ...

4. Photo-oxidation of polymers - Wikipedia

   en.wikipedia.org/wiki/Photo-oxidation_of_polymers

   Many similar cones also failed because an anti-UV additive had not been used during processing. Other plastic products which failed included polypropylene mancabs used at roadworks which cracked after service of only a few months. Different polymer samples are visualized using a scanning electron microscope (SEM) before and after weathering.

5. UV coating - Wikipedia

   en.wikipedia.org/wiki/UV_coating

   A UV coating (or more generally a radiation cured coating) is a surface treatment which either is cured by ultraviolet radiation, or which protects the underlying material from such radiation's harmful effects. [1]

6. Luminous paint - Wikipedia

   en.wikipedia.org/wiki/Luminous_paint

   Pearl Scene using phosphorescent paint, Irving Berlin's 1921 Music Box Revue. Phosphorescent paint is commonly called "glow-in-the-dark" paint. It is made from phosphors such as silver-activated zinc sulfide or doped strontium aluminate, and typically glows a pale green to greenish-blue color. The mechanism for producing light is similar to ...

7. Blacklight paint - Wikipedia

   en.wikipedia.org/wiki/Blacklight_paint

   On many German locomotives the control panel labels were printed with black light paint and a black light source was provided in the cab. This left the driver with full night vision while still enabling him to distinguish between the different switches and levers to operate his locomotive. [citation needed] Bodypainting with fluorescent paint

8. Conservation and restoration of plastic objects - Wikipedia

   en.wikipedia.org/wiki/Conservation_and...

   Photo-oxidative degradation occurs when plastic degrades from exposure to ultraviolet (UV) or visible light; the most damaging wavelengths depend on the composition of the polymer. [14] In general, plastic will be affected by light, and it is best practice to keep plastic away from light sources as much as possible, especially during longterm ...

9. Curing (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Curing_(chemistry)

   In many cases, the resin is provided as a solution or mixture with a thermally-activated catalyst, which induces crosslinking but only upon heating. For example, some acrylate-based resins are formulated with dibenzoyl peroxide. Upon heating the mixture, the peroxide converts to a free radical, which adds to an acrylate, initiating crosslinking.