The Addition Of Waxes In The Process Of Masterbatch
2015.04.02 14:28Waxes are used widely in all kinds of field like Non-woven, WPC, Car wax polish, inks and paints. Also waxes can be used in production of pigments. Today we talked about the adding components of waxes in the process of Masterbatch.
If the addtion of waxes are too big in the masterbatch, Masterbatch melt rate will be big, which will be more smooth in the outside of masterbatch, thus weakening the machine and melt shear probation, depressed and decentralized the finess of pigment in the melt probation greatly. So that it will influence the stregth of pigments.
In addition, the addition of waxes are too much which can make molding difficulties affecting dimensional stability and mechanical properties make it lower. In Preparing the masterbatch, polyethylene wax is added as a dispersant, wetting of the pigment particles on the one hand, to improve the interface of the pigment and the resin State, so that the pigment is easy to disperse; on the other hand , it reduces the entanglement of the polymer molecular chains, the molecular chains of the polymer plays a lubricant, accelerates the movement of the polymer molecules, thereby improving the flow properties of the blend processing. This synergy guide cause apparent viscosity decreases. Use content of 20% of the production of polyethylene pigment masterbatch, masterbatch wax content of 8% shall be prepared optimal performance. As long as the amount of polyethylene wax is added to ensure adequate wetting of the pigment particles can, dispersant excessive melting viscosity is too low, is not conducive to mechanical shear force is transmitted to the pigment particles, but not conducive to disperse.