Abstract
In the given work results of research radiothermoluminescense and electrets properties HDPE and composites on his basis, containing the polar organic additive distributed in volume fibroin natural silk (up to 50 % are stated about). Thus it is established, that changes of molecular structure HDPE by introduction in it of fibroin natural silk and radiating modifying, prove in changes of spectra RTL. Complex research RTL and electrets properties of composites HDPE+fibroin has shown, that studying RTL of spectra of composites it is possible to predict formation high electrets conditions in them.