Weather strip waste

Matsushita et al. [127] prepared compositions showing good vulcanizability containing EPDM reclaim. Weather-strip wastes comprising of sulfur-cured EPDM mbber (containing 50% carbon black) were kneaded at 300°C and 3 MPa and extruded to give a rubber (Mw 200,000 gel content 65%), 25 parts of which was mixed with unvulcanized SBR 75, carbon black 37.5, and sulfur 1.3... 

Russian workers [33] have used an electromagnetic field to activate the surface of EPDM crumb obtained from waste EPDM products. Having activated the EPDM crumb they then compounded it into EPDM automotive weather strip compounds based on Dutral TER 4038 rubber. Their results showed that the activated powder could be incorporated at levels of up to 20%, in the presence of 1% VTs-20KP process aid, without causing a significant increase in viscosity, or a reduction in profile stability or tensile strength. 

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