| abstract |
Disclosed are a polyolefin elastomer adhesive film with a low water vapor permeability and a preparation method therefor. The adhesive film comprises 50-100 parts by mass of a matrix resin, 0-40 parts by mass of a modified resin, 0.001-2 parts by mass of an activator, 0.1-3 parts by mass of an organic peroxide, 0.02-5 parts by mass of a co-crosslinking agent, 0.02-2 parts by mass of a silane coupling agent, 0.005-2 parts by mass of a light stabilizer, and 0-20 parts by mass of a water-blocking filler. By means of the addition of the modified resin with an active group and the activator, the crosslinking degree and crosslinking density of the adhesive film are improved, thereby reducing the water vapor permeability rate; and by means of the addition of the water-blocking filler, the water-blocking performance of the adhesive film is further improved, the reliability of an assembly is ensured and the service life of the assembly is prolonged. |