Novel carbon adsorbents for propane/propylene separation, with an unprecedented adsorption selectivity to propane – the minority component were prepared from a phenolic resin precursor. The preparation conditions of molecular sieve adsorbents, such as pre-treatment phosphoric acid, carbonization and post-treatment propylene, carefully investigated concerning their role on separation performance...

in this research, using pyrolysis of phenolic resin in the presence of silicon particles, the sic ceramic composite is formed. the samples were prepared by introducing 30, 35, 40, 45 and 50 wt% of si particles to the phenolic resin. the samples were cured at 180°c then carbonized at 1100°c. the final carbonized c/si composites are hot-pressed at 1500°c in inert atmosphere, which is more than th...

attempts have been made for the first time to produce a friction material with thermal sensitive modulus by the inclusion of combined plastic/rubber properties of thermoplastic elastomers (tpe) as viscoelastic polymeric materials into the formulation for the purpose of increasing the damping behavior. in order to evaluate the viscoelastic parameters such as loss factor (tan δ) and elastic modul...