▎ 摘　　要

NOVELTY - Improving thermal conductivity and heat dissipation by nano-deposited graphene coating comprises (A) mixing graphene, carbon nanotubes, nano-silica, nano-alumina, magnetoelectric ion composite agent, ion regulator, ion crosslinking agent, ionic curing agent, pH regulator, nano dispersant, ionic solution stabilizer, and deionized water, (B) low temperature nano-dispersing of the curing liquid, (C) curing the stable nano-dispersion liquid, (D) tooling on the production line, (E) pre-treating heat-dissipating components, (F) pre-treating heat-dissipating components, (G) conveying the magnetization pretreatment heat-dissipating component to the graphene nano-deposition liquid, (H) surface of the nano-deposited graphene heat-dissipating component, (I) heating magnetic field-controlled nano-deposited graphene coating heat-dissipating component, (J) rearranging the coating and functionalizing the densified coating as required, (K) vapor-depositing, and (L) cooling. USE - The method is useful for improving thermal conductivity and heat dissipation by nano-deposited graphene coating, which is used for aerospace applications, including battery, power supply, charging pile, base station and matched terminal electronic device. ADVANTAGE - By nano-depositing graphene coating on the surface of the heat dissipation device, uniform and stable graphene micro-fins are formed on the surface of the device, which increases the heat dissipation surface area, the surface area can be increased by more than 2 times, at the same time, the thermal conductivity and thermal radiation coefficient of graphene are relatively higher, which improves the thermal conductivity and heat dissipation performance of the heat dissipation device as a whole. DETAILED DESCRIPTION - Improving thermal conductivity and heat dissipation by nano-deposited graphene coating comprises (A) mixing graphene, carbon nanotubes, nano-silica, nano-alumina, magnetoelectric ion composite agent, ion regulator, ion crosslinking agent, ionic curing agent, pH regulator, nano dispersant, ionic solution stabilizer, and deionized water and aging at normal temperature and pressure to form stable curing liquid, (B) low temperature nano-dispersing of the curing liquid, and dispersing for 3-28 hours to form a stable nano-dispersion liquid, (C) curing the stable nano-dispersion liquid at normal temperature and pressure to form a stable graphene nano-deposition solution, (D) tooling on the production line for heat dissipation components, (E) pre-treating heat-dissipating components, aqueous circulation degreasing, degreasing and deburring at room temperature and pressure, and pre-treating heat-dissipating components, (F) pre-treating heat-dissipating components by normal temperature and normal pressure magnetization pretreatment, (G) conveying the magnetization pretreatment heat-dissipating component to the graphene nano-deposition liquid prepared in step (C), controlling the magnetic field of the graphene nano-deposition liquid by the external magnetic field matching device to match the magnetic field of the heat-dissipating component after magnetization pretreatment, controlling the polarity of the magnetic field, realizing graphene nano-liquid deposition, and forming stable and uniformly oriented graphene-based nano-coating on the surface of the heat dissipation component, (H) surface of the nano-deposited graphene heat-dissipating component, uncontrolled deposition of ions and deposits in the normal temperature and normal pressure circulating liquid phase controlled by the matching magnetic field to form a magnetic field-controlled nano-deposited graphene coating heat dissipation component, (I) heating magnetic field-controlled nano-deposited graphene coating heat-dissipating component at normal pressure to rearrange and densify the coating, (J) rearranging the coating and functionalizing the densified coating as required, (K) after the functionalization, vapor-depositing the heat-dissipating components under normal pressure and temperature, the rearranged and densified graphene coating after liquid-phase deposition is strongly arranged and completely cross-linked and densified again under the action of matching magnetic field, vapor deposition repairs liquid deposition defect coating uniformity, at the same time aligns liquid deposition graphene units again, and achieves complete densification at the same time, and (L) cooling the heat-dissipating components after vapor deposition to normal temperature, qualifying the tooling for quality inspection, and packing the finished product.