| abstract |
The invention discloses a molding process of a plastic mobile phone back cover, and relates to the technical field of thin-walled 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, it is dried at 90～110℃ for 2～4h, and then processed into the back cover of the mobile phone by injection molding, and the nano-Al 2 0 3 on the surface of the back cover of the mobile phone is reacted with PTFE to form unevenness by high-pressure composite anodizing. The Al 2 0 3 / PTFE composite oxide film is 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, chemical corrosion resistance and so on. |