What is Anti-static Masterbatch?

Antistatic masterbatch is a functional masterbatch produced through a special process by uniformly mixing antistatic agents, carrier resins, and auxiliary additives (such as dispersants, heat stabilizers, etc.) and then extruding and granulating. Its core function is to endow high-molecular materials such as plastics, films, and pipes with long-lasting or temporary antistatic properties, addressing the problem of static electricity accumulation caused by friction and induction (such as dust adsorption, electric shock, and spark ignition) in the materials. It is widely used in fields such as electronic packaging, films, medical devices, and automotive parts.

The anti-static masterbatch is divided into Migratory antistat masterbatches and Non-migratory antistat masterbatches.

1.Migratory antistat masterbatches form a microscopically thin coating that captures water vapor from the air. The captured water, in turn, becomes the conductor to dissipate static electricity. 

Advantages: Low cost, low addition amount (usually 2%-5%), simple processing, minimal impact on the mechanical properties of the substrate, and high temperature resistance.

Disadvantages: Antistatic effect depends on environmental humidity (significantly reduced effect when humidity is below 40%), short duration (antistatic agent will be exhausted and performance will decline after 6-12 months), prone to precipitation (possible "sprinkling" on the surface, affecting the appearance and adhesion of the product).

2.Non-migratory antistat masterbatches contain clear polymeric antistat additives that provide antistatic properties that are indpendent of atmospheric humidity.

Advantages: The anti-static effect is not dependent on environmental humidity (stable performance within a humidity range of 5% - 95%). The effect lasts for a long time (in sync with the service life of the product, no precipitation).

Disadvantages: The cost is high (2-5 times that of temporary masterbatch). The addition amount is large (usually 5% - 15%). Some types may slightly affect the transparency of the base material and have a narrow processing window.