One of my favorite quotes on learning is from the television show Frasier. Kelsey Grammer, as the title character, best summed it up: “It may be an unwise man who doesn’t learn from his own mistakes, but it’s an absolute idiot that doesn’t learn from other people’s.” How can we apply this valuable lesson to monitoring UV and establishing/maintaining a process window? Consider … [Read more...] about UV LED Lessons Learned from Others
2019 Issue 2
Virginia Tech Team Develops Model to 3D-Print Piezoelectric Materials
A team from the Virginia Polytechnic Institute and State University College of Engineering has developed methods to 3D-print piezoelectric materials that can be custom-designed to convert movement, impact and stress from any direction into electrical energy. “Piezoelectric materials convert strain and stress into electric charges,” explained group leader Xiaoyu “Rayne” Zheng, … [Read more...] about Virginia Tech Team Develops Model to 3D-Print Piezoelectric Materials
The Science of UV/EB Polymerization
The first edition of this column included a brief “Introduction to Polymer Science.”1 Polymeric materials were defined as those containing molecules of very large size and molecular mass. These “macromolecules” then were classified into three different categories: linear polymers, branched polymers and crosslinked polymers. Any given sample may contain mixtures of two or more … [Read more...] about The Science of UV/EB Polymerization
The RadTech UV Clearcoat Durability Study: How Paint Performance is Assessed by Ford Motor Company
By Christopher M. Seubert, PhD, Ford Motor Company RadTech and Ford Motor Company have teamed up to conduct an extensive study to evaluate the longterm performance of UV-curable clearcoats designed for exterior and interior automotive applications. This study is intended to follow up on a 2003 study that included in-depth chemical and physical analyses on what was, at the … [Read more...] about The RadTech UV Clearcoat Durability Study: How Paint Performance is Assessed by Ford Motor Company
New UV LED Technologies for Carbon-Fiber Reinforced Polymers
By M. Lecompère and X. Allonas, Laboratory of Macromolecular Photochemistry and Engineering, University of Haute Alsace; and D. Maréchal and A. Criqui, Mäder Research Dual-cure initiating systems have emerged as promising alternatives to perform fast and on-demand curing of thick polymers. In this paper, a system based on pyrylium salt as photoinitiator and a hydroperoxide or … [Read more...] about New UV LED Technologies for Carbon-Fiber Reinforced Polymers