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RadTech
UV/EB Technology Conference & Expo 2008
May 4-7, 2008
Lakeside Center at McCormick Place
Chicago, Illinois - United States of America
HIGH PERFORMANCE COATINGS
High performance UV-curable
coatings for different metal substrates
Svetlana Alexandra Bratslavsky, DSM Desotech
Abstract:
UV-curable coatings were obtained from different types of oligomers:
urethane acrylates, epoxy acrylates and cationically cured epoxies.
Coatings were evaluated over flat metal substrates and wire. Physical-mechanical
properties of UV cured coatings, as well as their low and high temperature
stability were investigated. Coatings having good adhesion to copper,
stainless steel, aluminum, and zinc-galvanized steel are discussed.
Adhesion dependence on time, curing conditions and the adhesion promoters
employed is shown.
Highly
abrasion resistant UV curable clearcoat for plastics
Shan Cheng, PPG Industries, Inc.
Abstract: UV curable clearcoat technologies with enhanced
abrasion resistance for plastic substrates are of current market
and technical interests for industrial and optical products, such
as consumer electronics, appliances, and ophthalmic lenses. A highly
abrasion resistant UV curable hybrid coating technology has been
developed offering significantly performance improvement as compared
to state of the art commercial organic system. Formulation techniques,
coating performance and application will be addressed in this paper.
Multicomponent
Thiol-Ene Systems for Tailored Polymer Properties
Neil Cramer, University of Colorado
Abstract: This work investigates both the polymer properties
and polymerization kinetics of ternary thiol-ene-(meth)acrylate
photopolymer systems as high performance polymer and composite materials.
Ternary thiol-ene-(meth)acrylate systems proceed via a mixed mode
step-chain growth radical polymerization mechanism that combines
the advantages of both step-growth thiol-ene and chain growth (meth)acrylate
systems. They exhibit rapid polymerization kinetics, low oxygen
inhibition, and high functional group conversion. Additionally,
the polymer mechanical properties are tailorable over a wide range
of values.
Photocuring
of New Advanced Barrier Coatings
Sergei Nazarenko or Charles E. Hoyle,
Univesity of Southern Mississippi
Abstract: Barrier materials that either restrict or selectively
enhance gas or ion flow are extensively used. Traditional perm-selective
barrier polymers are formed from thermoplastics and co-extruded
polymer laminates. We have characterized a new class of advanced
barrier materials that are readily photocured. These photocured
films were found to exhibit significantly enhanced diffusion properties
compared to traditional coatings and threefore offer significant
processing advantages for replacing traditional barrier materials
for,food packaging, electronics and other applications.
Potential
Biofilm Resistant Coatings
Rebecca A. Herrington, Abilene Christian
University
Abstract: Several potential biofilm resistant acrylates were
synthesized and formulated, at varying weight percents, into standard
UV-curable coatings. The formulations (4 mils thick) were UV-cured
onto stainless steel plates where each coating's resistance to biofilm
formation, adhesion, hardness, chemical and impact resistance were
tested. Photo-differential scanning calorimetry was used to determine
the polymerization rate of the acrylates (identical concentrations
as formulations) in 1,6-hexanediol diacrylate using a standard Type
I or II photoinitiator.
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