Thermal shrinkage reaction type shielding film as well as preparation method and application thereof

The invention discloses a thermal shrinkage reaction type shielding film and a preparation method and application thereof, and belongs to the technical field of shielding film preparation. The thermal shrinkage reaction type shielding film comprises a thermal shrinkage reaction type shielding glue layer, a release film and a release film protection film, and the thermal shrinkage reaction type shielding glue layer coats the release film. The thermal shrinkage reaction type shielding adhesive layer comprises the following components in percentage by mass: 1%-10% of thermal shrinkage resin, 1%-15% of reaction type resin, 0.1%-5% of a cross-linking agent, 0.5%-3% of an accelerant, 30%-75% of inorganic shielding filler, 0.1%-3% of a functional additive and 20%-65% of a solvent. The invention further provides a preparation method and application of the thermal shrinkage reaction type shielding film. The thermal shrinkage reaction type shielding film has certain ductility and thermal shrinkage, can perfectly wrap a