1、聚碳酸酯（PC）加工的十大秘诀Plastics ProfileProcessing Polycarbonate -- Top 10 SecretsTips for manufacturing polycarbonate products. To compete successfully in today's global market, molders continue to seek the most innovative, state-of-the-art knowledge about
2、their products and operations. And as molders, you know that the art of molding even a well-known material such as polycarbonate, is continually evolving. This is especially true as polycarbonate materials are increasingly used in more “next-generati
3、on” technologies and applications. Based on experience in molding labs and on-site work with customers, the Injection Molding Core Technology Team of Dow Plastics has identified the following “Top Ten” tips for processing with polycarbonate products.
4、 Both molders and plastics distributors will benefit from including these tips into their efforts to increase productivity and contribute to the successful use of polycarbonates:Account for the High Thermal Diffusivity. Polycarbonate tends to lose he
5、at from the melt to the mold, barrel, nozzle and air faster than most plastics, which can lead to “delamination” when processing polycarbonate. Understanding and working with the thermal diffusivity of your polycarbonate product will make a positive
6、impact on the final molding process. Specifically Tune Machines. Due to thermal diffusivity, polycarbonate temperatures can be difficult to control. Proper temperature control constants can help reduce the time needed to stabilize the process after s
7、tart-up and help melt temperature override. The relatively high viscosity of polycarbonate resins requires screw velocity and plastic pressure control constants that initially provide a high rate of increase, but are more dampened than may be necessa
8、ry for material like polypropylene.Control Temperature with Care. In our experience, the optimal temperature control system for polycarbonate products features high density, high response mineral-filled bands and an autotune controller. Be aware of t
