| abstract |
The invention provides a polyamide film which sequentially comprises a first surface layer, a first nylon layer, a core layer, a second nylon layer and a second surface layer; the first surface layer and the second surface layer are independently prepared from raw materials comprising the following components: 77-87 wt% of polyamide resin, 10-15 wt% of nylon graft copolymer and 3-8 wt% of nylon master batch; the first nylon layer and the second nylon layer are independently prepared from raw materials comprising the following components: 55 wt% -78 wt% of polyamide resin, 12 wt% -25 wt% of combined additive and 10 wt% -20 wt% of amorphous nylon; the core layer comprises a polymer in-situ copolymerized by nylon 6, nylon 66, polyether amine adipate and montmorillonite. The polyamide film adopts multilayer compounding, each layer takes polyamide resin as a matrix and is matched with other components, so that the toughness of the film is improved, and the cold stamping performance of the film is further improved. |