As a multifunctional rubber additive, HA-8 can be used as both a vulcanizing agent and a vulcanizing aid for peroxide system during rubber processing, as well as an anti scorching agent and a tackifier. It can be applied to both general rubber and special rubber and rubber plastic composite systems. It can also solve the problem that copper wires and copper appliances are stained black by copper sulfide pollution due to contact with sulfur-containing vulcanizing agent. Dosage: 0.5-1.0 parts as anti coking agent. 2-3 parts as vulcanizing agent, 1.5 parts for improving compression deformation and 0.5-5.0 parts for improving adhesive strength.