▎ 摘　　要

NOVELTY - Aluminum-plastic complex tape comprises a middle aluminum belt and a first plastic layer and a second plastic layer, which are sequentially arranged on one side of the surface of the aluminum belt. The first plastic layer comprises modified low density polyethylene resin. The modified low-density polyethylene resin comprises 80-100 pts. wt. low-density polyethylene, 5-12 pts. wt. graphene oxide, 3.5-5.5 pts. wt. water-resistant tree auxiliary agent, and 3-7 pts. wt. water-blocking agent. The second plastic layer comprises an interpenetrating network structure high polymer prepared from a fluorine-containing siloxane polymer and polyethylene. USE - The tape is useful for cable coating (claimed) in power system, information and instrument system, island power supply, device distribution, offshore oil field development and offshore wind power field. ADVANTAGE - The tape: has good comprehensive mechanical properties, environmental properties and dielectric properties, excellent fatigue resistance and water blocking effect, excellent water tree resistance and electromagnetic shielding performance; and can meet the long-term use requirements of submarine cables in harsh environments. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the aluminum-plastic complex tape, comprising (i) mixing low-density polyethylene, graphene oxide, water-resistant tree auxiliary agent, and water-blocking agent according to their composition, uniformly suspending on one side of the middle aluminum belt to obtain the middle aluminum belt coated with the first plastic layer, (ii) dissolving 2,5-divinyl-1,4-benzenedicarboxaldehyde in toluene solvent, adding monovinyl cage oligomeric silsesquioxane and fluorine-containing olefin respectively according to the molar ratio of monovinyl cage oligomeric silsesquioxane, fluorine-containing olefin and 2,5-divinyl-1,4-benzenedicarboxaldehyde is 5-12:5-12:5-12, uniformly stirring and mixing, heating up to 60-90℃, adding the initiator, and carrying out the reflux reaction under the protection of nitrogen atmosphere for 5-12 hours to obtain fluorine-containing siloxane intermediate with a dialdehyde functional group, and (iii) swelling low density polyethylene in diamine, adding the fluorine-containing siloxane intermediate with dibasic aldehyde functional group obtained in step (ii), performing chain extension polymerization to obtain a polymer with an interpenetrating network structure, and thermally spraying the interpenetrating network structure polymer on the intermediate aluminum belt obtained in step (i) as the second plastic layer.