Chemists from I.N. Ulyanov Chuvash State University (CSU) have patented a new composition for protective coatings. The development is intended for use in conditions of temperature fluctuations and high electrical voltage — for example, in aviation, energy, or industrial facilities.
The coating is based on epoxy resin. A special amino-containing organosilicon hardener is added to it. The mixture is applied to the surface, where it hardens and forms a durable film.
The main advantages of the new composition are good adhesion (the coating adheres firmly to any surface), high heat resistance, and excellent electrical insulation properties. At the same time, the coating remains elastic: it does not crack at temperatures from -45 to +80 degrees. The glass transition temperature is lowered, which allows the material to retain plasticity longer.
The composition uses well-studied components, but in new proportions: for every 100 parts of epoxy resin, there are 12 to 70 parts of hardener. This allows for flexible adjustment of the properties of the final coating for various tasks. It is expected that the new composition will find application in the production of printed circuit boards, insulators, electronic device enclosures, and protective coatings for operation in extreme conditions.
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