Long-lasting plastic welding rod

Disclosed is a long-lasting plastic welding rod. The long-lasting plastic welding rod is made of raw materials comprising, by weight, 7-9 parts of magnesium fluoride, 5-7 parts of metal manganese, 4-6 parts of metal zirconium, 0.5-2 parts of cetyl trimethyl ammonium bromide, 1-3 parts of amine halide, 4-8 parts of linear low-density polyethylene, 11-15 parts of paraffin oil, 6-8 parts of copper powder, 2-4 parts of copper powder, 12-16 parts of polyethylene, 1-3 parts of sodium carbonate, 5-11 parts of 35%-ethyl alcohol, 0.2-1 part of an inhibiter and 3-8 parts of propane diacid. The long-lasting plastic welding rod has the advantages of long effect time, good effect, no virtual welding, and good welding sealing effect.