Mostly, because spoilers
I think a lot of it boils down to, Season 5 started in December 2017 whereas Black Panther released two months later. If they started talking about Wakanda in the TV series months before the movie it would take away some of the shock and awe.
In previous episodes, when a movie was released, it usually did not effect what SHIELD was doing (Guardians, Deadpool, Dr Strange, Thor, etc). The exceptions being Captain America movies.
In those cases, they had a direct tie-in in the episode just following the movie release. For instance, in Captain America: Winter Solder, Nick Fury is shot (among other spoilers), and immediately following in SHIELD, Fury shows up injured.
This was not possible with Black Panther. The current season if SHIELD started in December; two months before. If they started talking about
"mines of vibranium" and "Wakandan bird ships"
it would take some of the mystery out of the movie.
Now, it is entirely possible that later in the series, the tech could have been used during the escape, but to what end? Wakanda was hoarding their technology away from the rest of the world until the very end at the U.N. conference. But by then in the timeline, SHIELD was in the future so they wouldn't know about the reveal.
So how would the plot be furthered by finding a vibranium bracelet? They wouldn't know what to do with it anyways.