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VARIOUS RUBBER WASTE HANDLING METHODS

VARIOUS RUBBER WASTE HANDLING METHODS. Incineration Pyrolysis Crushing, grinding, pulverization Cryogenics Use of chemicals or steam Microwave energy Ultrasonics. OBJECTIVES:.

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VARIOUS RUBBER WASTE HANDLING METHODS

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  1. VARIOUS RUBBER WASTE HANDLING METHODS • Incineration • Pyrolysis • Crushing, grinding, pulverization • Cryogenics • Use of chemicals or steam • Microwave energy • Ultrasonics

  2. OBJECTIVES: • Recycling GRT, rubber wastes and thermosets through devulcanization, decrosslinking, compounding and revulcanization • ADVANTAGES OF ULTRASONICS: • No chemicals involved • Fast devulcanization • Continuous process • Devulcanized rubbers can be revulcanized • Decrosslinked thermosets can be molded

  3. SCHEMATIC OF REACTORUP TO 50 LBS/HR CAPACITY

  4. SAMPLE LIST OF RUBBERS AND THERMOSETS SUITABLE FOR DECROSSLINKING • GRT • SBR UNFILLED AND CB FILLED • NR UNFILLED AND CB FILLED • SBR/NR • ISOPRENE RUBBER UNFILLED • BUTADIENE RUBBER UNFILLED AND CB FILLED • BUTYL RUBBER UNFILLED • TIRE CURING BLADDER • EPDM UNFILLID AND CB FILLED • EPDM ROOFING MEMBRANE • SILICONE RUBBER UNFILLED AND PRECIPITATED AND FUMED SILICA FILLED • POLYURETHANE RUBBER UNFILLED AND CB FILLED • HNBR • FLUOROELASTOMER • EVA FOAM • CROSSLINKED HDPE • POLYURETHANE HIGH RESILIENCY FOAM

  5. Moriyama mixer Two-roll mill Compression molding press GrindingDevulcanization Sample Preparation Characterizations Devulcanization Characterizations Revulcanization Blending Characterizations Revulcanization Characterizations RECYCLING PROCEDURES SEM: Hitachi S-2150 AFM: Digital InstrumentsCuring Behavior: Monsanto ODRMechanical Properties: Instron 5576Gel Fraction: Soxhlet extractionCrosslink Density: Solvent swelling Rheological Properties: MPT, APA 2000NMR: Proton Solid State NMR (70oC) Power ConsumptionDie PressureGel FractionCrosslink DensityRheological Properties NMR: Proton Solid State NMR Virgin/Devulcanized Curing BehaviorMechanical PropertiesGel FractionCrosslink Density NMR Mechanical PropertiesGel FractionCrosslink Density

  6. SCALED UP ULTRASONIC EXTRUDER300 LBS/HR SIDE VIEW FRONT VIEW

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