▎ 摘　　要

NOVELTY - A radiation-resistant packaged and reinforced COTS device comprises radiation-resistant packaged and reinforced composite coating comprising functional filler, accelerator, coupling agent and resin material, where the functional filler is a graphene nano-coil with rare earth oxide directionally arranged on a surface. USE - Radiation-resistant packaged and reinforced commercial off-the-shelf device for use in spacecraft. ADVANTAGE - The resin coating anti-radiation ability is greatly improved. The toughness and shear strength of the film layer are effectively improved, so that the coating has low condensable volatile property and excellent adhesive performance. The graphene roll/rare earth composite coating has high mechanical strength, high thermal conductivity and high electrical conductivity, and the electronic transmission occurs in the whole system because of non-common electrical and optical properties. The graphene is a new two-dimensional carbon material, which has more excellent physical, chemical and mechanical properties. The graphene has high scattering cross-section and low absorption cross-section for the neutrons, which is an excellent neutron moderator. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation method of radiation-resistant packaged and reinforced COTS device, which involves (1) adding resin into a liquid storage tank of ultrasonic-assisted thermal spraying device, heating the liquid storage tank by a heating ring, controlling the temperature of the liquid storage tank to 70-90degreesC, so that the resin melts into liquid state in the liquid storage tank, orderly adding accelerator, coupling agent and functional filler in the liquid storage tank, starting a stirrer to stir, so that the accelerator and the molten resin are mixed uniformly to obtain a molten polymer system, and (2) starting an ultrasonic wave generator, adjusting the ultrasonic wave power to 1000-2000 W, applying ultrasonic waves for 10-20 minutes in an interval of 3-5 minutes, using the vibration characteristics of the ultrasonic wave, and removing the bubbles of the molten polymer system to obtain spraying liquid, spraying the spraying liquid on a surface of the COTS component, and curing in oven to obtain radiation-resistant coating.