▎ 摘　　要

NOVELTY - Solvent-free epoxy coating comprises a main agent and a curing agent. The main agent comprises 20-30 pts. wt. hyperbranched epoxy resin I, 20-40 pts. wt. ultrafine precipitated barium sulfate, 2-10 pts. wt. pigment, 10-20 pts. wt. graphene slurry, 10-30 pts. wt. flake zinc powder slurry, 0.1-0.5 pts. wt. vinyl silane coupling agent I, 0.2-1 pts. wt. fumed silica, 0.1-0.3 pts. wt. defoamer. The curing agent 90-97 pts. wt. modified m-xylylenediamine, 2-5 pts. wt. curing accelerator, 0.2-1.0 pts. wt. vinyl silane coupling agent II, 1-5 pts. wt. aminosilane coupling agent. The mass ratio of the main agent and the curing agent is 4-8:1. The graphene powder slurry comprises 15 wt.% graphene powder, 2 wt.% vinyl silane coupling agent III, 5 wt.% alkyl silane coupling agent I, 5 wt.% non-o-phenylene diformic acid epoxy plasticizer E-PS, hyperbranched epoxy resin II (balance). USE - The solvent-free epoxy coating is useful for preparing graphene-nano-rod composite material, which is useful in the heavy anti-corrosion field. ADVANTAGE - The solvent-free epoxy coating has simple design, convenient and fast preparation, low coating viscosity, long construction period, good coating physical mechanical performance, anti-corrosion and durability, and the product cost performance is obvious. DETAILED DESCRIPTION - Solvent-free epoxy coating comprises a main agent and a curing agent. The main agent comprises 20-30 pts. wt. hyperbranched epoxy resin I, 20-40 pts. wt. ultrafine precipitated barium sulfate, 2-10 pts. wt. pigment, 10-20 pts. wt. graphene slurry, 10-30 pts. wt. flake zinc powder slurry, 0.1-0.5 pts. wt. vinyl silane coupling agent I, 0.2-1 pts. wt. fumed silica, 0.1-0.3 pts. wt. defoamer, 0.1-0.3 pts. wt. defoamer. The curing agent 90-97 pts. wt. modified m-xylylenediamine, 2-5 pts. wt. curing accelerator, 0.2-1.0 pts. wt. vinyl silane coupling agent II, 1-5 pts. wt. aminosilane coupling agent agent. The mass ratio of the main agent and the curing agent is 4-8:1. The graphene powder slurry comprises 15 wt.% graphene powder, 2 wt.% vinyl silane coupling agent III, 5 wt.% alkyl silane coupling agent I, 5 wt.% non-o-phenylene diformic acid epoxy plasticizer E-PS, hyperbranched epoxy resin II (balance), The scaly zinc powder slurry, 20 wt.% scaly zinc powder, 3 wt.% vinyl silane coupling agent IV, 7 wt.% alkyl silane coupling agent II, 5 wt.% non-o-phthalic diformic acid epoxy plasticizer E-PS, hyperbranched epoxy resin III (balance). An INDEPENDENT CLAIM is also included for a method for preparing solvent-free epoxy coating comprising (1) heating the double-planet stirring kettle to 80-100℃, the vacuum is not more than - 0.09 MPa, drying for 5 - 10 minutes, reducing the temperature to not more than 50℃, (2) controlling the vacuum in the double-planet stirring kettle not more than - 0.07 MPa, keeping the stirring speed at 50-100 revolutions per minute, adding sequentially-branched epoxy resin I, superfine precipitated barium sulfate, pigment, gas phase silicon dioxide, defoaming agent, (3) adding the material, immediately adding vinyl silane coupling agent I, after adding vinyl silane coupling agent I, adjusting the stirring speed to 800-1000 revolutions per minute, high speed stirring for 20-60 minutes, controlling the material temperature not more than 50℃, the vacuum in the double-planet stirring kettle is not more than - 0.07 MPa, (4) controlling the vacuum in the double-planet stirring kettle not more than -0.07 MPa, adjusting the stirring speed to 50-100 revolutions per minute, adding graphene powder slurry, squama shaped zinc powder slurry, after adding the material, adjusting the stirring speed to 800-1000 revolutions per minute,, controlling the material temperature not more than 50℃, the double planetary stirring kettle vacuum is not more than -0.09 MPa, stirring at high speed for 1-5 minutes, stopping discharging to obtain the main agent, where the preparation of the curing agent comprises (1) heating the double-planet stirring kettle to 80-100℃, the vacuum is not more than -0.09 MPa, drying for 5-10 minutes, reducing the temperature to not more than 50℃, (2) controlling the vacuum in the double-planet stirring kettle not more than - 0.07 MPa, keeping the stirring speed at 50-100 revolutions per minute, sequentially adding the modified m-xylylenediamine, curing accelerator, stirring for 1-5 minutes, adding vinyl silane coupling agent II, after adding vinyl silane coupling agent II, adjusting the stirring speed to 800-1000 revolutions per minute, stirring at high speed for 1-5 minutes, (3) adding aminosilane coupling agent, continuously stirring for 1-5 minutes at high speed, stopping discharging, obtaining curing agent when the solvent-free epoxy coating is used, taking the prepared main agent and curing agent in the mass ratio of 4-8: 1, mixing them uniformly, coating and using.