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UV Curing Part Five: Cationic Photopolymerization

February 8, 2016 By Jeffrey Gotro 1 Comment

Guest Post by Dan Lamone UV-curable resins that utilize a cationic photopolymerization mechanism behave differently than the free-radical polymerizable resins that we discussed in the past two weeks. While cationic resins use UV light to initiate polymerization, these systems utilize completely different photoinitiators, monomeric materials and have their unique advantages ... [Click to Continue...]

UV Curing Part Four: Every body Gets Acrylated!

February 1, 2016 By Jeffrey Gotro 4 Comments

Guest Post by Dan Lamone Image courtesy of LED Magazine Product performance for free-radical curing UV resins can be tailored to meet many customer requirements due to the wide range of monomeric and oligomeric materials available. Most free-radical curing UV resins employ the unsaturated functionality of acrylate (including methacrylates) for curing but allyl and ... [Click to Continue...]

UV Curing: Part Three; Free Radical Photoinitiators

January 25, 2016 By Jeffrey Gotro 3 Comments

Guest Post by Dan Lamone Many commercial systems use UV exposure to initiate curing as seen in the image above (courtesy of Dymax, www.dymax.com )  Free radical generating photoinitiators are used to cure through double bonds, most commonly acrylate and methacrylate monomers or oligomers. There are two types of free-radical generating photoinitiators, designated as Type ... [Click to Continue...]

UV Curing: Part 2; A Tour of the UV Spectrum

January 18, 2016 By Jeffrey Gotro 3 Comments

Guest Post by Dan Lamone We can classify portions of the electromagnetic spectrum by designating the frequency OR wavelength range of electromagnetic radiation because of wonderfully simple equation: c = f * λ. The speed of light (c), a constant, is equal to the product of frequency (f) and wavelength (λ). Once a wavelength is designated we automatically know the radiation’s ... [Click to Continue...]

UV Curing: Part One, Let There be Light!

January 11, 2016 By Jeffrey Gotro 5 Comments

Guest Post by Dan Lamone I am honored to have received an invitation to be a guest blogger here on the Polymer Innovation Blog. We will spend the next couple months discussing a favorite subject of mine – ultraviolet (UV) curing. A versatile toolset in the engineering toolbox, the photochemical reaction mechanism employed by UV curable resins provides development and ... [Click to Continue...]

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Polymer Innovation Blog

I’m Dr. Jeff Gotro and welcome to the Polymer Innovation Blog. Over the last 40 years I have been involved in polymer research, along with product and process development. I acquired invaluable experience working for IBM, AlliedSignal, Honeywell, Ablestik Labs (now Henkel) and in multiple consulting projects. In this blog, I (along with some guest contributors) will share our experiences, tips, and “tricks of the trade” to get more out of your innovation efforts and discuss new trends and technical advances in the polymer industry.
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Polymers in Electronic Packaging

polymers in electronic packaging Are you confused about what is electronic packaging? Have you ever wondered what type of polymers and polymer-based composites are used in electronics? Learn More...

Practical Tips for Curing Thermosets

practical tips for curing thermosets Have you ever had a question about the degree of cure or is your part fully cured after processing? Confused about what is gelation or how does vitrification impact thermoset curing? Learn More...

Rheology of Thermosets

rheology of thermosets Have you ever had a question about measuring the rheological properties of thermosets Didn’t know what is the right experimental approach to get the right rheological information? Learn More...

Dielectric Cure Monitoring of Thermosets

Dielectric Cure Monitoring of Thermosets Do you have a need for an in-situ cure monitor for a thermoset process but don’t know where to start? Are you confused about the terminology used in dielectric spectroscopy? Learn More...

Introduction to Biopolymers and Bioplastics

Introduction to Biopolymers and Bioplastics Would you like to know how sustainable are bio-based polymers? Or what is the market size and growth rate for bioplastics? Or have questions about the biomass supply chain? Learn More...

Thermoset Characterization

Thermoset Characterization Have you ever had a question about how to measure a physical property of a thermoset? Confused about what is gelation or how does vitrification impact thermoset curing profiles? Or wondered how to measure the glass transition temperature of an epoxy or polyester composite? Learn More...

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