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5. Photocrosslinked polymer properties
Three-dimensional polymer networks formed by photopolymerization of multifunctional monomers are totally insoluble in organic solvents, and exhibit low swelling due to their high degree of cross-linking. This property is used in photolithography to produce the high-definition relief images required for the manufacture of microcircuits and printing plates. Resolving power is a function of irradiation wavelength, reaching a limit value of 0.4 µm for near-UV radiation. The use of photosensitive polymers (photoresists) has made it possible to increase the integration density of microcircuits and miniaturize electronic components.
Most photo-crosslinked polymers exhibit good thermal resistance, and only begin to decompose at temperatures above 400 C. In the case of acrylate resins, for example, thermal aging tests carried out at 110 C in the presence of air revealed...
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Photocrosslinked polymer properties
References
Theses
- - http://www.sudoc.abes.fr
- TOURÉ (M.L.) - Exposition UV spectrale [Texte imprimé] : instrumentation et modélisation. - Université Joseph Fourier (Grenoble) (2003).
- ...
Equipment
An industrial UV irradiation plant comprises three basic elements (figure 1 ):
a light source (S) fitted with a parabolic or elliptical reflector. This is usually a medium-pressure mercury vapor lamp, which can be doped with a...
Manufacturers. Suppliers
Non-exhaustive list
EFOS: acquired by EXFO http://www.exfo.com
IST METZ GmbH : http://www.ist-uv.de
Fusion UV Systems Inc: http://www.fusionuv.com
...Main users
There are many areas of application for light-curing resins. Users include
for graphic arts: SICPA : http://www.sicpa.com
for UV adhesives: Loctite: http:// www.loctite.com
for...
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The Ultimate Scientific and Technical Reference