| 摘要 |
The invention relates to a method of producing chargeable plastic foams. According to the inventive method, a chemical expanding agent is added to at least one thermoplastic base polymer. The mass is molten, mixed before and/or after melting, and the mixture is cooled, whereby a bulky, porous carrier material is formed, with the proviso that an extruder or multi-screw kneader-extruder is used and that at least intermittently an inert gas is fed to the melt consisting of the base polymer and the chemical expanding agent. The chemical expanding agent is selected from the group of the diazo compounds, N-nitroso compounds, sulfohydrazides, urea derivatives, guanidine derivatives, hydroboron/water systems, carbonates and hydrocarbonates. |
