It is well known that nylon is now a new engineering plastic product. MC nylon rods are prepared by anionic polymerization of caprolactam at atmospheric pressure. MC nylon is gradually replacing copper, aluminum, steel and other metal materials. It is widely used in textile, rubber, petrochemical, steel rolling, mining machinery, automobile and other industrial fields 111.There is a great demand in domestic and foreign markets.

Currently, MC nylon rods are produced by static casting. This method has technical problems, such as low efficiency, high loss, limited length, easy to produce shrinkage holes and internal defects, which are difficult to solve. For MC nylon rods with a diameter of less than 80 ni, the problems are more prominent. For rods with a diameter of 50 mm, the theoretical maximum length can only be 300 mm, and the yield is only about 60% after removing the nozzle loss. Therefore, its promotion and application is limited, and it can only be replaced by the poor mechanical strength of nylon 6 extruded rods on the market.

At present, by changing the direction of the casting runner, the horizontal centrifugal casting method is used to produce MC nylon rods, and the general manufacturers will overcome the technical problems that are difficult to be solved by the static casting method, such as low efficiency, high loss, limited length, and prone to shrinkage holes and internal defects. In order to realize the industrialized mass production of MC nylon rods, the production of MC nylon rods will be improved. For the new process. The study has not been reported in the domestic and international literature.