Premium
Electrostatic Discharging Behaviour of Polycarbonate Parts Made by Process‐Integrated Surface Modification
Author(s) -
Nagel Jürgen,
Pahner FelixAron,
Zimmerer Cordelia,
Härtig Thomas,
Gehde Michael,
Heinrich Gert
Publication year - 2014
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.201400114
Subject(s) - polycarbonate , materials science , surface modification , layer (electronics) , solvent , composite material , polyethylene , surface layer , polymer chemistry , chemical engineering , organic chemistry , chemistry , engineering
The surface‐reactive injection moulding process is based on the reactive coupling between, e.g., a polyamine and polycarbonate (PC). The reaction takes place in a small layer and within a time of only about 1 μs before solidifying of the melt surface. Kinetic data are difficult to measure under those conditions. By model reactions in solution and in melt, first data on the reaction rate are available. Moulding experiments were made with a polyethylene imine (PEI), labelled with a naphthalimide dye. On injection of a PC melt, PEI layers of different thickness were transferred from the mould to the PC part surface. No significant residues remained on the mould surface. The thickness of the layer on PC was measured before and after solvent extraction. Conditions for best transfer and the maximum layer thickness are discussed. The electrostatic discharging behaviour of those layers on a PC part is shown.