Polycarbonate referred to as PC, as a high-performance engineering plastics, widely used in electronic and electrical appliances, automotive, medical and other fields, has excellent impact strength, and impact strength is a direct reflection of the polycarbonate impact performance indicators.

However, it is not the case that the higher the molecular weight of the polycarbonate, the better the impact resistance, because after the molecular weight reaches an extreme value, the impact resistance may tend to remain or decline (ultra-high molecular weight is not considered here).

The treatment of polycarbonate after synthesis will cause a decrease in molecular weight. A good post-treatment process will enable the polycarbonate to maintain excellent impact resistance. Impact strength has little to do with differences in synthesis methods, but more to do with differences in synthesis and subsequent treatment processes.