17. Sep 2021 | Production & Lab
Self-healing and high-biobased-content UV-curable coatings
In a recent work, a biobased UV-curable oligomer was firstly synthesised by ring-opening reaction of epoxidised rubber seed oil with glycidyl methacrylate-modified itaconic acid precursor.
Subsequently, a series of UV-curable coatings were prepared by co-photopolymerization of the oligomer with the hydroxyethyl methacrylate diluent. UV-curing behaviors, biobased contents, and ultimate properties such as thermal, mechanical, and coating properties were studied. Furthermore, dynamic transesterification reactions were activated at elevated temperatures in the presence of a Zinc catalyst, thus self-healing, shape memory, malleable, and recyclable properties were further investigated.
Notably, the obtained UV-curable coatings demonstrated good self-healing properties (86–100% at 200 °C for 30 min), high biobased contents (45.4–72.3%), and high performance (tensile strength and glass transition temperature up to 22.4 MPa and 119.2 °C, respectively).
The study has been published in Progress in Organic Coatings, Volume 159, October 2021.
Resins for Water-borne Coatings
Expand your knowledge and get fully acquainted with the various aspects of water-borne coatings - from production to properties to special features of their use! With the slow change from solvent-borne resins and coatings to water-borne coatings "Resins for waterborne coatings" is a must-read for any formulator wanting to expand their knowledge. The authors discuss important aspects of the "solvent-to-water-transition" of the past 40 to 50 years, take a deep dive into the key aspects and theories behind the production, properties and applications of these resins as well as providing an overview of how they are currently used in water-borne coatings.
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