▎ 摘　　要

NOVELTY - The method involves grading (1) polystyrene raw material. Steam hot water is received (2). Expansion is carried out (3) for fifty times. Intermediate storage is carried out (4) in cells filled with gas such as helium gas or hydrogen gas between molecules. Molding process is carried out (5) by receiving steam of hot water. A polystyrene piece is used (6) for immediately receiving a film of graphene in outer perimeter for preventing the gas dissipated in environment. USE - Method for encapsulating a polystyrene product with graphene material. Uses include but are not limited to space field, aeronautics industry, solar-energy capturing application, stationary platform manufacturing industry, soil temperature control application, and building engineering field. ADVANTAGE - The method allows preventing gas inside the polystyrene molecules from being dissipated to atmosphere. DESCRIPTION OF DRAWING(S) - The drawing shows a flow diagram illustrating a method for encapsulating a polystyrene product with graphene material. Step for grading polystyrene raw material (1) Step for receiving steam hot water (2) Step for carrying out expansion (3) Step for carrying out intermediate storage (4) Step for carrying out molding process (5) Step for using polystyrene piece (6)