▎ 摘　　要

NOVELTY - A packaging material contains microcrystalline wax, petroleum resin, rosin resin, naphthenic oil, nano-graphene, magnetic powder, sodium silicate, magnetic ferric oxide, magnetic alumina, asphalt based carbon fiber powder, non-halogenated organic phosphinate, hexamethylenetetramine, trimethylpentyltriethoxysilane, conductive mica powder, nano-conductive graphite powder, trimer of polyisocyanate, Teflon (RTM: PTFE) fiber, nano titanium dioxide, poly dopamine, polyphosphazene, magnetic ferroferric oxide particles, ethyl 2-phosphate, polyvinyl acetylene, and paraffin. USE - Magnetic radiation proof modified nano-thin film packaging material (claimed). ADVANTAGE - The packaging material has high melting point, light color, improved performance, improved heat resistance, high porosity, high specific surface area and improved mechanical property, and absorbs harmful gas and dust. DETAILED DESCRIPTION - The packaging material comprises 30-50 pts. wt. microcrystalline wax, 18-28 pts. wt. petroleum resin, 15-25 pts. wt. rosin resin, 25-30 pts. wt. naphthenic oil, 10-15 pts. wt. nano-graphene, 20-30 pts. wt. magnetic powder, 5-10 pts. wt. sodium silicate, 10-20 pts. wt. magnetic ferric oxide, 4-8 pts. wt. magnetic alumina, 30-35 pts. wt. asphalt based carbon fiber powder, 5-7 pts. wt. non-halogenated organic phosphinate, 8-10 pts. wt. hexamethylenetetramine, 2-4 pts. wt. trimethylpentyltriethoxysilane, 0.3-0.5 pt. wt. conductive mica powder, 0.2-0.4 pt. wt. nano-conductive graphite powder, 0.8-1 pt. wt. trimer of polyisocyanate, 1-2 pts. wt. Teflon (RTM: PTFE) fiber, 8-12 pts. wt. nano titanium dioxide, 1-5 pts. wt. poly dopamine, 2-6 pts. wt. polyphosphazene, 10-20 pts. wt. magnetic ferroferric oxide particles, 4-8 pts. wt. ethyl 2-phosphate, 1-5 pts. wt. polyvinyl acetylene, 8-12 pts. wt. paraffin, 7-13 pts. wt. higher aliphatic alcohol, 5-9 pts. wt. EDTA, 7-13 pts. wt. glass fiber, 6-12 pts. wt. heat stabilizer, 6-12 pts. wt. binder, 1-5 pts. wt. polydimethyldiallylammonium chloride, 8-16 pts. wt. bentonite, and 1-5 pts. wt. nano-cerium oxide. The nano-graphene is prepared by adding concentrated sulfuric acid to graphite, low temperature stirring at -20 to -10 degrees C for 5-12 hours, stirring at 0-5 degrees C for 5-12 hours, adding potassium permanganate to carry out oxidation reaction to obtain oxidized graphite solution, adding oxidized graphite solution with cetyltrimethylammonium bromide to obtain modified oxidized graphite solution, filtering, washing, and drying at 50 degrees C for 24 hours in vacuum. An INDEPENDENT CLAIM is included for preparation method of packaging material, which involves (1) adding magnetic powder, sodium silicate, magnetic ferric oxide, magnetic alumina, nano-titanium dioxide and poly dopamine into pulverizer, filtering through 100-200 mesh sieve to obtain component (A), (2) mixing component A in mixer for 3-4 minutes, adjusting the mixer temperature to 140-160 degrees C, adding microcrystalline wax, petroleum resin, rosin resin and naphthenic oil, (3) reducing speed of the mixer, adding remaining components, pulverizing, mixing, filtering through 100-200 mesh sieve, mixing at high temperature 90-100 degrees C to obtain component (B), reducing temperature below 70 degrees C, unloading, cooling, crushing, and screening.