▎ 摘　　要

NOVELTY - High thermal conductivity composite crucible comprises a crucible body (1). The crucible body is a cavity structure with an open upper end. A graphene-silica composite material layer (3) is laid on the bottom of the inner cavity of the crucible body. A quartz ceramic structure layer (2) is laid on the graphene-silica composite material layer. USE - The composite crucible is useful for polycrystalline silicon ingot. ADVANTAGE - The method enhances the mechanical and thermal properties of the material. The composite crucible has high strength and good toughness; reduces the overflow rate of the crucible and reduces the energy consumption of the ingot casting process; improves the quality of polysilicon crystals; and meets the market demand. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) material for manufacturing high thermal conductivity composite crucible for polycrystalline silicon ingots comprising graphene oxide, toluene and monomer siloxane; and (2) preparing high thermal conductivity composite crucible for polycrystalline silicon ingots. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the high thermal conductivity composite crucible for polycrystalline silicon ingot. Crucible body (1) Quartz ceramic structure layer (2) Graphene-silica composite material layer (3)