| abstract |
The invention discloses a molding process for the back cover of a plastic mobile phone, and relates to the technical field of thin-wall plastic parts processing. Polycarbonate and ABS resin are respectively taken in a weight ratio of 7:3, 10wt% of nano-Al 2 0 3 is added, and mixed After uniform, dry at 90-110 ℃ for 2-4 hours, and then process it into a mobile phone back cover by injection molding, and use high-pressure composite anodic oxidation to make the nano-Al 2 0 3 on the surface of the mobile phone back cover react with PTFE to form unevenness. Al 2 0 3 /polytetrafluoroethylene composite oxide film, and then sprayed on the surface of the back cover of the mobile phone to form a uniform tetrafluoroethylene/calcium carbonate composite coating. The tensile strength, toughness and impact strength of the back cover of the mobile phone of the invention make the comprehensive performance of the back cover of the mobile phone good, and a uniform and dense tetrafluoroethylene/CaCO 3 composite coating is formed on the surface of the back cover of the mobile phone, and the composite coating has corrosion resistance. Strong, high hardness of the film layer, small friction coefficient, can achieve the effect of super-hydrophobicity, so that the back cover of the mobile phone has excellent characteristics such as anti-fouling, self-cleaning and chemical corrosion resistance. |