Jorge Lacayo-PinedaProf. Dr Jorge Lacayo-Pineda is head of the expert field for materials evaluation at Continental Tires and has held different executive positions in the materials labs of Continental since 1998. He is an honorary professor at Leibniz University of Hannover and a visiting professor at Qingdao University of Science & Technology. He is chair of ASTM Sub-Committee D11.20 Rubber Compounding Materials & Processes, vice chair of ASTM Committee D24 Carbon Black, convener of ISO Working Group TC45/SC2/WG5 Chemical Tests of Rubber, and a member of the Board Council of the German Rubber Society.
Advanced techniques for the characterization of resins in rubber
New techniques based on commercially available equipment are presented for evaluating both reinforcing and performance resins. Novolac-type reinforcing resins investigated by High-Frequency DMA to quantify the degree of nonlinearity induced in rubber cause a higher response of the super harmonic resonance. The efficient utilization of performance resins requires knowledge about their influence on the dynamic glass transition and their miscibility behaviour in the specific rubber compound. Broadband Dielectric Spectroscopy and Fast Differential Scanning Calorimetry are applied for the characterization of the dielectric and thermal relaxations. Results can be described by one single VFTH equation over 10 decades.