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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
VARIOUS RUBBER WASTE HANDLING METHODS
  • Incineration
  • Pyrolysis
  • Crushing, grinding, pulverization
  • Cryogenics
  • Use of chemicals or steam
  • Microwave energy
  • Ultrasonics
objectives
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
sample list of rubbers and thermosets suitable for decrosslinking
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
recycling procedures

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