BASIC BITUMEN MODIFICATION METHODS VARIOUS ADDITIVES

Modification of boundary lubrication by oil-soluble friction modifier additives

Yingxi Zhu, Hiroko Ohtani , Michael L. Greenfield, Marina Ruths, and Steve Granick Department of Materials Science and Engineering, University of Illinois, Urbana, Illinois 61801 USA Physical and Environmental Sciences Department, Ford Research and Advanced Engineering, Dearborn, Michigan, 48121 USA Department of Chemical Engineering, University of Rhode Island, Kingston, Rhode Island 02881 Dep...

Vacuum pyrolysis of waste tires with basic additives.

Granules of waste tires were pyrolyzed under vacuum (3.5-10 kPa) conditions, and the effects of temperature and basic additives (Na2CO3, NaOH) on the properties of pyrolysis were thoroughly investigated. It was obvious that with or without basic additives, pyrolysis oil yield increased gradually to a maximum and subsequently decreased with a temperature increase from 450 degrees C to 600 degree...

Lattice-patterned LC-polymer composites containing various nanoparticles as additives

In this study, we show the effect of various nanoparticle additives on phase separation behavior of a lattice-patterned liquid crystal [LC]-polymer composite system and on interfacial properties between the LC and polymer. Lattice-patterned LC-polymer composites were fabricated by exposing to UV light a mixture of a prepolymer, an LC, and SiO2 nanoparticles positioned under a patterned photomas...

Effectiveness of Various Organometallics as Antiwear Additives in Mineral Oil

The Human Bitumen Study

Recently, the Human Bitumen Study has been finished (Schlüter, 2011). Including 500 workers from more than 80 construction sites it represents the world-wide largest study on adverse health effects caused by bitumen. The study answers a question that has been controversially discussed since decades: Bitumen exposed workers do not show higher levels of DNA damage than unexposed individuals. On t...