Ground Rubber Tire / Thermoplastic Composites: Effect of Different Ground Rubber Tires

Abstract

Thermoplastic composites containing different Ground Rubber Tire (GRT) materials, Linear Low Density Polyethylene (LLDPE) and, in some case, a coupling agent (IB‘E’, an ethylene glycidyl methacrylate copolymer) were prepared by melt blending. The impact energies of all the thermoplastic composites (normally containing 40 wt % GRT) were evaluated using an instrumented impact tester. The effects of the GRT particle-size, particle size distribution and shape, the mode of grinding, and the oxygen surface concentration were analyzed. The wet-ambient-ground GRT based composites show higher surface oxidation and give better impact energy than cryo-ground and normal air-ground GRT based composites. Smaller GRT particle size results in a small increase in the impact property of the composite and a greater influence on the melt processability of the composites. Of the different GRT surface modification techniques studied for improved composite interfacial adhesion and impact properties the composites from electron beam radiation treated GRT yield higher increases in impact energy in comparison to corona and plasma treated GRT based composites.

Blending of poly(ethylene) with recycled ground tire rubber and nanosilicate

“…Megoldás lehet továbbá a gumiőrlemény felületének mó-dosítása besugárzással, ami történhet gamma illetve elektronsugárzással is [14]. A besugárzott anyagban olyan reakciók játszódnak le, amely a felület reaktivitásához, szabad gyökök keletkezéséhez és lánchasadáshoz vezetnek.…”

Transient Heat Transfer of Scrap Tire Peel and Its Fine Powder in the Cryogenic Grinding Process

“…Recently the utilization of scrap tires has been developed by grinding worn rubber tires into fine partilces, which ake essential in asphalt and plastic applications. There are several methods available for producing such finely ground rubber tires (GRT) [2,3,7], e.g., the ambient grinding, wet-ambient grinding and cryogenic grinding. In the cryogenic grinding process, the worn tires are first split to tire peels, which are then cooled with liquid nitrogen below the *Corresponding author.…”

The Criterion of Particle-Induced Cracking of Filled Polymers

“…A substantial part of industrial waste is cross-linked rubber that is not thermoplastic and cannot be remolded. One way to recycle cross-linked rubber is to grind the rubber and to use the obtained powder as the filler for thermoplastic polymers (Knunyants et al, 1988;Rajalingam, Sharpe, & Baker, 1993).…”