Page 38 - february

SUCCESS SECRET

New coating protects electronics at
extreme temperatures

TGU researchers from the laboratory of chemical technologies,
together with the staff of the ISE SB RAS, have created a new
protective coating that is resistant to extreme temperature extremes
and has high chemical resistance to many solvents. It can be used
to protect against premature corrosion of electrical printed circuit
boards and electronic components operating in high humidity and
extremely low temperatures. In particular, the new coating can
improve the reliability of the equipment used in the Arctic. The
project was supported by the TSU Scientific Foundation named after
D.I. Mendeleev.

"Nowadays, various paints and varnishes based on
epoxy resins, polyurethanes or polyacrylates are often used
as protective coatings,"explains one of the project executors,
an employee of the TSU laboratory of chemical technologies,
ISE graduate student Daniil Zuza. "Apply them by aerosol
spray, with a brush, or by immersing the printed circuit board
in a solution. These methods of deposition have significant
drawbacks, for example, it is often difficult to apply coatings
in hard-to-reach places, which leads to defects in continuity,
which can lead to failure of the entire board."
Along with this disadvantage of traditional approaches
is the formation of air bubbles inside the coating, which also
leads to a deterioration in the quality of the coating and, in
particular, in its electrical strength. Production usually takes
place in several stages (application, curing) and takes from
several hours to several days.

38 Stanochniy park