| 摘要 |
<p>The invention relates to an extrusion process for producing plastic granules having a statically dissipative effect. The problem addressed by the invention is that of specifying a possible way of producing plastic granules which allows a thermo-plastic product having a maximum specific surface resistance of 108Ωto be produced without using metal fibres, metal oxides, graphite, conductive carbon black, intrinsically conductive polymers, single-wall/multiwall carbon nanotubes, organically modified nanoclays or polyamide-polyether block amides (more precisely those based on adipic acid-caprolaetam polyether glycol copolymers and related substances), wherein the plastic granules are distinguished by improved dispersion of the active substances present therein. According to the invention, the problem is solved by means of an extrusion process for producing plastic granules, said process comprising the following steps:—in a preliminary stage, a mixture of lithium chloride and anticaking agents is ground to a particle size of d90=20μm,—at least one organic, surface-active internal antistatic agent, a thermoplastic and the mixture are than provided in pure form, individually or as a mixture, and—fed to an extrusion machine simultaneously, successively or separately from one another.</p> |
