1. Release agentDuring the heating stage of the rotational molding process, chemical or physical bonding will occur at the interface between the polyethylene powder or melt and the inner surface of the mold due to surface oxidation. When there are local defects on the inner surface of the mold, the ...

Polyethylene is a high molecular compound formed by the addition polymerization of ethylene. The actual molecular weight varies from 10,000 to several million depending on the polymerization conditions. The polyethylene invented was low-density polyethylene obtained by high-pressure method, with a s...