000			01576nam a2200241Ia 4500
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100			_aWiebner S
245		0	_aContinuous reactive compounding elastomeric alloys based on ground tyre rubber and polypropylene in a co-rotating twin screw extruder
260			_bKautschuk Gummi Kunststoffe _c2012
300			_a28-36
520			_aThis paper deals with the continuous preparation of Elastomeric Alloys (EAs) with TPE-like properties by a peroxide induced reactive compounding process of ground tyre rubber and polypropylene in a co-rotating twin screw excruder. Preliminary batch-mixer experiments allowed the specification of suitable screw designs, feeding protocols and necessary residence times. The settings of screw speed and throughput for continuous reactive compounding were based on simplified 1D-simulations of the extrusion process. The extrusion experiments showed that the width of the residence time distribution was the key parameter in determining the mechanical properties of continuously prepared EAs whereas the mean residence time alone had little effecton the EA properties. The TPE-like bahaviour of the continuously prepared EAs was confirmed by quasistatic and cyclic tensile experiments.
650			_aElastomeric alloy
650			_aGround tyre rubber
650			_aThermoplastic Elastomers
650			_aTwin screw extruder
700			_aChemntz
700			_aDresden
700			_aHeinrich G
700			_aMennig G
700			_aMichael H
700			_aWagenknecht U
942			_cJS
999			_c56258 _d56258