Increasing the density of plastics is one way to increase the relative density of the original resin, mainly by adding heavy fillers and blending heavy resins.
1. Add heavy filler. Includes the following:
(1) metal powder;
(2) Heavy mineral fillers.
2. Blending heavy resin
This method is relatively small, and generally can only reach about 50%. Mainly suitable for some light resins such as PE, PP, PS, EVA, PA1010 and PPO. Heavy resins that are often added include: PTFE, FEP, PPS, and POM.