This paper describes the results of a blending study of two recently developed solution-polymerised styrene butadiene rubbers (s-sbr) (s-1215 and cariflex s-1210) with special reference to their possible use for manufacturing tyre treads. One has a high glass transition temperature and the other has a low one. The miscibility of these two rubbers was investigated both mutually and with a variety of other rubbers in blends and carbon back filled vulcanisates. Thermal analysis was performed using differential scanning calorimetry on both rubber blends and fully compounded vulcanisates. Glass transition temperatures were determined in the heating mode at 10 degrees c after initial cooling of the samples to -190 degrees c. Dynamic mechanical testing was performed on cylindrical vulcanised specimens in the dynamic shear mode of a rheometrics mechanical spectrometer, system 4. Wear resistance measurements of the vulcanisates were taken using a simple laboratory abrasion test (din 53516). It was found that the vulcanisate properties of these two rubbers could be adjusted by blending with other rubbers, such as natural rubber, butadiene rubbers, or high styrene emulsion polymerised styrene butadiene rubber. A special case was the blend of the two s-sbr types with each other, which constituted a miscible pair.

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  • Corporate Authors:

    Elsevier Science Publishers

    Crown House, Linton Road
    Barking, Essex IG11 8JU,   England 
  • Authors:
    • Stamhuis, J E
    • Groenewould, W M
    • Raadsen, J
  • Publication Date: 1989


  • English

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  • Accession Number: 00498637
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Files: ITRD, TRIS
  • Created Date: Sep 30 1990 12:00AM