Silicone masterbatch is the low-dosage additive application in chemistry, plastics, rubber and industries field.
Masterbatch de silicona, as a type of polymer additive, has a relatively high molecular weight, typically ranging from thousands to millions. It is composed of many repeating units of polymers. In addition, it also has a higher melting point and boiling point, as well as better mechanical properties and thermal stability. It overcomes the shortcomings of low molecular weight additives, which may evaporate quickly.
How to use silicone masterbatch is a topic worth discussing and explaining.
There are two processing methods for silicone masterbatch here.
Firstly, for compounding. Silicone masterbatch as the raw material additive using in compounding, it usually mix with EVA/SBS/PVC pellets, POE, EDPM, Talc, auxiliary, anti oxidant agent, foaming agent, and other fillers and auxiliary together in EVA/TPR/PVC shoe sole field.
Silicone masterbatch as the raw additives in sole field, but can solve the problem of black line, white spots, mucous, bubbles and so on. It through improving the internal lubricants in shoe injection machine that increasing the anti abrasion(wear resistant). Owing to function of silicone masterbatch that property of final products can achieve the best performance.
In PP products field, silicone masterbatch mix with PP pellets, POE, Talc, Black masterbatch, auxiliary, and other material.
It can solve the anti scratch issue in final products such as automotive interior, automotive bump, PP household, bottle and container, and the hard plastics products which have anti scratch or lubricants performance demand.
All in all, with the raw material together mixing or compounding(such as PP pellets+POE+Talc+Black masterbatch+Silicone masterbatch+auxiliary+other material), its can form into blend. Silicone masterbatch help blend in injection machine or extrusion machine have good lubricants performance and increase the produce speed. It also can application in PP, PE, TPU, TPR, PA, PET, PC… products. Silicone masterbatch as the slip agent, take the major role in processing machine for improving internal lubricant that solve precipitation and accumulation of machine problems and external lubricants that solve smoothness and anti dust problem.
Secondly, for using directly. Silicone masterbatch+blend(Such as, blend=PP pellets+POE+Talc+Black masterbatch+auxiliary+other material, no add silicone masterbatch) together in to injection machine or extrusion machine. Using directly not the same with compounding with raw material, compounding need through to machine(mixer+injection or extrusion), but using directly just only through injection or extrusion machine. Although using directly is convenient that compounding, however, this processing method is not suitable for the dispersion of silicone masterbatch. Moreover, the machining temperature using directly should comply with the melt index of different carrier silicone masterbatch.
For this reason, Xiamen Xiangxi New Material Co., Ltd. has specially developed a product for using directly– Silicone Powder. As a non-carrier white silicone powder, it is easy to add and use in the using directly process, and can effectively solve the problem of lubrication inside and outside the machine.Improve Processing Performance: Silicone powder can act as a lubricant, reducing friction during the plastic processing process, lowering the melt viscosity, thereby enhancing the fluidity of the plastic, and facilitating processing and molding.
Silicone powder can reduce the roughness of the plastic product surface, enhance the surface gloss, making the product appearance smoother and more aesthetically pleasing. It has high thermal stability, which can protect the plastic during high-temperature processing, prevent thermal degradation, and extend the service life of the plastic. What’s more, it has a low friction coefficient and can be used as a mold release agent, reducing friction between plastic products and molds, facilitating demolding, and reducing molding defects. Finally, in some applications, the use of silicone powder can reduce the amount of other more expensive additives, thereby reducing production costs.
