▎ 摘　　要

NOVELTY - The sheet has a substrate layer (1) formed on an intermediate layer (2). A waterproof layer is formed between a sound-insulating layer (4) and a support frame (3). The substrate layer is formed with a fireproof material. The intermediate layer is formed on a polystyrene foam board. The sound-insulating layer is fixed with a graphene sponge. The substrate layer is formed with an XPE fireproof layer. The support frame is extended at ends of a platform. USE - Sound insulation material sheet. ADVANTAGE - The sheet has better graphene foam sound insulation effect and high sound and thermal insulation performance. DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of a sound insulation material sheet. Substrate layer (1) Intermediate layer (2) Support frame (3) Sound-insulating layer (4)