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Friday, 20 September 2019
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Raw materials & technologies, Technologies

Anionic UV curing of epoxy resins containing scaly silica

Wednesday, 25 October 2017

A cured organic-inorganic composite material where scaly silica was well-dispersed has been successfully fabricated with a tetrafunctional epoxy resin and chemically-modified scaly silica through an effective anionic UV-curing system using base proliferation reactions.

Anionic UV curing of epoxy resins containing scaly silica. Source: Pixabay

Anionic UV curing of epoxy resins containing scaly silica. Source: Pixabay

Scaly silica (SS) chemically-modified with base-amplifying groups (1.4 wt% toward SS) was prepared, and anionic UV curing of an epoxy resin containing 100 wt% of chemically-modified SS was achieved after 5000 mJ/cm2 of light irradiation at a wavelength of 365 nm and subsequent heating at 160°C for 30 min.

Well dispersed

It was found by scanning electron microscopic study that the chemically-modified SS was well dispersed in the UV-cured film, and that unmodified SS was found to be aggregated.

The study is published in: Progress in Organic Coatings, Volume 113, December 2017, Pages 185-188

Book tip:

Radiation curing is one of the fastest growing technology in the inks and coatings industries. The book "Radiation Curing” has been written as reference guide who combines theory and practice for the daily work. The book focuses on 100 % liquid coating systems that are radically or cationically curable by UV or electron beam radiation.

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