| abstract |
The invention discloses a double-layer coextrusion casting film which comprises a PET layer and a PP layer. PP plastic particles comprise PP, trihydroxy polyoxypropylene ether, N,N'-(4,4'-methylene diphenyl)bismaleimide, trimethylolpropane trimethacrylate, 4,4'-dyhydroxyl diphenyl sulfide, montmorillonite, paraffin, antioxidant 1010, nano TiO2, polyether siloxane copolymer, methyl hydroxyethyl cellulose and VTPS silane coupling agent. PET plastic particles comprise terephthalic acid, ethylene glycol, maleic anhydride, 2-nitroterephthalic acid-4-methyl ester, 2,2-dimethyl-1,3-propylene glycol, 2,3-dibromo-2-butene-1,4-glycol, 1,4-benzene dimethanol, 2-aminoterephthalic acid, tetrabromo terephthalic acid, bis(2-ethyl hexyl)terephthalic acid, 4-bromo phthalic anhydride, 2,2-difluoro-1,3-benzodioxole, magnesium fluosilicate and antibacterial agent. By the combining of the PP layer and the PET layer, the whole composite film is high in barrier property, antibacterial and flame-retardant. |