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Results of direct moulding conducted in TEBAMIX

Results of direct moulding conducted in TEBAMIX. The following samples were received from:. Rubber granulate(powder) 0-0,8 mm * Rubber granulate 1-2 mm * Rubber granulate 1-4 mm * Rubber buffing ** *- produced by ORZEŁ S.A. - Ćmiłów

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Results of direct moulding conducted in TEBAMIX

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  1. Results of direct mouldingconducted in TEBAMIX

  2. The following samples were received from: • Rubber granulate(powder) 0-0,8 mm* • Rubber granulate 1-2 mm* • Rubber granulate 1-4 mm* • Rubber buffing** *- produced by ORZEŁ S.A. - Ćmiłów ** produced by FBO RubberTechnology Company - Wolbrom 1 2 3 4

  3. Effect of moulding pressure

  4. Mouldconstruction

  5. Processing conditions: • Moulding temperature : 180 oC • Moulding time : 15 min (starting from hot moulds) • Moulding pressure:variable

  6. Effect of moulding pressure on the granulate (1-2 mm) parameters Measured parameters: • Hardness • Thickness • Tensile strength • Elongation at break • Density The materials (rubber granulate and buffing) were direct moulded in plates of φ 150mmx4mmbefore obtaining dog-bone specimens.

  7. Details for specifiedtests

  8. Change of the tensile strength [MPa]

  9. Change of the elongation at break [%]

  10. Change of the hardness [oShA]

  11. Change of the density[ g/cm3]

  12. Change of the thickness

  13. Effect of moulding pressure on the granulate (1-2 mm) – allsamples

  14. Effect of the presence of moisture in the rubber powder – samplesthickness ~ 20 mm Rubberpowder was dried under different conditions: 180 C x 30 min - on the pressplate 150 C x 60 min - on the pressplate 120 C x 90 min - in a dryer Blistersarepresent inall samples.

  15. Mixing different types of granules in one sample Upper layer – powder 0-0.8 mm* (3 mm thickness) Lower layer – granulate 1-2 mm (15 mm thickness) * The rubber powder was undried. The surface is smooth and don't have blisters.

  16. Anotherexperiments

  17. Processing conditions: • Moulding temperature : 180 oC • Moulding time : 15 min (starting from hot moulds) • Moulding pressure: 3,2 MPa • Plates dimension: 120 x 90 x 4 mm* *unless otherwise noted

  18. Mouldconstruction:

  19. Effect of the presence of moisture in the rubber powder* (0-0,8mm) No blisters No blisters *Samplesdimension: 120x90x2

  20. Effect of the presence of moisture in the rubber powder*(0-0,8mm) *Samplesdimension: 120x90x2

  21. Comparisonall tested granulates Allsamplesweremade by usingdirectmoulding.

  22. Modificationof surfacegranulates (1-2 mm) by addition: • Curing system (vulcanising agent, accelerator) • Sulphur • TMTD • Zinc stearate • Plasticisers • Paraffinic oil • Aromatic oil • Machine oil • Solvents • Water • Extraction gasoline • Resin (other than polyurethane binder) • novolac

  23. Modification by sulphur - influence increase the percentage of sulfur

  24. Modification by TMTD and sulphur/TMTD (5:1)

  25. Modification by zinc stearate

  26. Modification by plasticisers

  27. Modification by solvents

  28. Modification by novolac (resin)

  29. Recycledrubber products weremade by using of polyurethane binder. • Processing conditions • Mouldingtemperature : 90o C • Moulding time : 7 min (starting from hot moulds) • Moulding pressure: 3,2 MPa • Plates dimension: 120 x 90 x 4 mm • Polyuretane binder content : 6 wt % • Rubberplatesweremoulded by using: • Rubber granulate(powder) 0-0,8 mm • Rubber granulate 1-2 mm • Rubber granulate 1-4 mm • Rubber buffing

  30. Comparisonalltestedsampleswereobtained by using of polyurethaneresin

  31. Comparision of samples( similardensity 1.12-1.15g/cm3)

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