Polymer permanent antistatic masterbatch

Polymer permanent antistatic masterbatch can be divided into hydrophilic polymer antistatic masterbatch and intrinsic conductive polymer antistatic masterbatch.

There are many shortcomings in the use of surface-active dosages antistatic masterbatches, such as the lack of permanence of antistatic effect, precipitation making the surface deteriorate, heat decomposition during processing, and large dependence on temperature and humidity. However, polymer antistatic masterbatches have a long antistatic effect, no induction period, and are not easy to be affected by wiping, washing, and other conditions, which has become a research hotspot in recent years.

Hydrophilic polymer antistatic masterbatch has good compatibility with the matrix resin, so the effect is stable, durable, and good performance. At present, the commercialized polymer permanent antistatic masterbatch includes polyethylene glycol methacrylic acid copolymer (PEGM), polyethylene oxide – epichlorohydrin copolymer (PEO-ECH), polyether ester amide (PEEA) and polyether ester imide (PEI), etc.

The intrinsically conductive polymer antistatic masterbatch refers to the polymer with a conjugated P bond long chain structure, which is formed by chemical or electrochemical doping. That is, from the π conjugated chain to transfer or transfer electrons to form free radical ions or double ions. Under the action of the applied electric field, the carrier moves along the π-conjugated bond to realize the transfer of electrons and achieve the purpose of eliminating static charge. In addition to the rich structure of the polymer, machining, low density, and other characteristics, intrinsic polymer materials also have metal (high conductivity) and semiconductor properties.

At present, conductive polymer theory and applied research are polyacetylenes, polythiophene, polypyrrole, polyaniline, and their derivatives. Polymer permanent antistatic masterbatch antistatic effect lasting, no induction period, not easy to wipe, washing and other conditions, but the addition of large, high price, and can only be added to the resin by mixing method.

Compound antistatic masterbatch usually refers to two or more organic low molecular antistatic masterbatch used in a certain proportion of plastic products. Compound antistatic masterbatch is an important way to improve the antistatic property and balance other properties. At present, the compound antistatic masterbatch commonly used in the industry mainly includes anion-non-ion complex systems, cationic-non-ion complex systems, and non-ion-non-ion complex systems.