The tire industry is continually striving to improve cut/chip/chunk resistance whilst maintaining high level of product quality and product performance. Several approaches have been explored with varying fillers or optimising cure package or altering polymers and blend ratios, but each approach shows improvement with regard to cut/chip/chunk resistance but at the expense of hysteresis, heat build up and flex properties. With its complete portfolio of aramid fibers, p-aramid (Twaron and Technora) and m-aramid (Teijin Conex), Teijin Twaron is the world leader in the area of short fibre reinforcement of rubbers. These short fibres provide the rubber compounder with a potent ingredient to expand the performance of rubber products beyond their current horizons. The use of short fibres for compound reinforcement is known for many years. However, the use has been not explored for prime truck tire properties, such as heat build up reduction, hysteresis and rolling resistance improvements. This study was focussed on improving cut/chip/chunk resistance with an emphasis on hysteresis and heat build up improvements. It has been confirmed that with the addition of 1-3 phr (parts per hundred parts of resin) of p-aramid short fibres in a typical truck tread compound could significantly improve the cut/chip/chunk resistance with significant improvements in hysteresis and temperature developments. The tire test data shows the following degree of improvements with regard to the performance: durability 18 % - 20 %, heat build up 10 %, and rolling resistance 10 % - 25 % depending on the speed. This paper will paint only a part of the picture with regard to the potential of para aramid short fibres in tire applications.
Improvement in cut/chip/chunk resistance in truck tread compounds by using para-aramid short fibers
2005
18 Seiten, 9 Bilder, 14 Tabellen, 8 Quellen
Conference paper
English
faserverstärkter Kunststoff , Aramidfaser , Abriebfestigkeit , Schneidwiderstand , Reißfestigkeit , Reifen (Fahrzeugreifen) , Reifenprofil , Lastkraftwagen , Polymermatrix-Verbundwerkstoff , Lebensdauer , Rollwiderstand , Viskosität , Reibungswärme , Härte , Modul (Materialkonstante) , Dauerfestigkeit
Improving cut/chip/chunk resistance by using Sulfron 3000
Automotive engineering | 2007
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