Light wear-resistant material for rear cover of mobile phone

Abstract

Belonging to the technical field of high polymer materials, the invention relates to a lightweight wear-resistant material for mobile phone rear covers, which comprises 50-60 parts of polycarbonate, 20-30 parts of ethylene propylene diene monomer compound, 20-30 parts of polyethylene and 12-16 parts of inorganic mixture. The preparation method comprises the following steps: weighing the raw materials, heating the weighed raw materials to 260-280 DEG C, uniformly mixing to obtain a mixture, and carrying out injection molding and cooling demolding under the pressure of 150-170MPa to obtain the light wear-resistant material for the mobile phone rear cover. The inorganic mixture, the aluminum nitride fibers and the basic magnesium sulfate crystals are added to cooperate with one another, so that the thermal conductivity and the strength of the material for the mobile phone rear cover are improved, and the service life of the material is prolonged. The aluminum nitride fibers and the basic magnesium sulfate whiskers are treated by a silane coupling agent, and the graphite reinforcing agent contains modified silicone oil, so that the compatibility between an inorganic mixture and a polymer base material is improved; the product can be endowed with good scratch resistance.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a light-weight wear-resistant material for the back cover of a mobile phone. Background technique [0002] The materials of mobile phone shells are becoming more and more diverse. Common plastic materials, metal materials, glass materials, etc., plastic materials are easily deformed and damaged; metal materials are more complicated than plastic materials in terms of process, and their cost It is also higher, especially for some relatively advanced metals, such as aluminum alloys, titanium alloys, etc., which have the advantages of high hardness and thermal conductivity, but at the same time, the problem is that the appearance is more likely to be damaged, and the mobile phone is easy to appear too hot or too cold. ; Glass material, compared with metal and plastic, glass has the best hardness and impact resistance, more transparent than plastic, easier to col...

AI Technical Summary

Problems solved by technology

[0002] The materials of mobile phone casings are becoming more and more diverse. The common ones are plastic, metal, glass, etc. Plastic materials are easy to deform and damage; metal materials are more complicated than plastic materials in terms of technology, and their cost It is also higher, especially some relatively advanced metals, such as aluminum alloy, titanium alloy, etc., which have the advantage of high hardness and thermal conductivity, but at the same time, the problem is that it is more likely to cause damage to the appearance, and the mobile phone tends to be overheated or too cold ; Glass material, compared with metal and plastic, the hardness and impact resistance of glass is the best, more transparent than plastic, easier to color than metal, but its elasticity is poor, brittle, and plasticity is poor

[0003] Polycarbonate is often used as a raw material for plastic materials. Polycarbonate has excellent mechanical properties and excellent unnotched impact strength in the commonly used temperature range, but polycarbonate has poor wear resistance and solvent resistance, and is not resistant to ultraviolet light