The present work aims at contributing to the study of the complex phenomenon of wear of pin on disc contact in dry sliding friction between two material couples (bronze/steel and unsaturated polyester virgin and charged with graphite powder/steel). The work consists of the determination of the coefficient of friction, the study of the influence of the tribological parameters on this coefficient...

We report on synthesis of two highly disperse nanoparticles viz. Fe2O3 & f-Fe2O3 using chemical reduction method. Reaction was initiated to mix solution A (i.e. Fecl3 6H2o) into solution B (i.e. Fecl24H2o) together under the presence of ammonium to develop nanoparticles. Mechanical properties of above mentioned nanoparticles filled with polyester polymer nanocomposites were fabricated to assess...

Ionizing radiation offers clean and easily regulated way of initiating polymerization and crosslinking reactions, independent of the reaction temperature but only very few methods can be used for in-situ reaction monitoring. The advantages and limitations of electrical conductivity as a method for reaction monitoring are discussed on crosslinking of unsaturated polyester (UP) resin as an exampl...

Polymer concrete (PC) is a composite construction material that boasts several advantages, such as lightness, low water permeability, high resistance to corrosive environments, and chemical degradation. Consequently, it has recently attracted interest an alternative the traditional ones for civil applications. In this study, unsaturated polyester resin was considered matrix phase of PC. Aimed p...

Abstract A series of polyester prepolymers was synthesized from itaconic acid, phthalic anhydride, propane-1,2-diol and diethylene glycol by condensation polymerization. The use acid as a source unsaturation (instead more common maleic anhydride giving fumarate moieties) enabled to replace styrene reactive diluent methyl methacrylate. Room temperature curing model resin initiated butanone perox...

In this study, ornamental cranberry (Cornus Alba) reinforced hybrid composite is synthesized. The plant leaves have been collected, dried, and ground for production. After it into unsaturated polyester (UP) at different rates by mass, mixed to show a homogeneous distribution. Then, 5 wt.% of the total mixture added epoxy resin polymerization reactions are started with help necessary additives c...

Purlins made from galvanised steel in fertiliser warehouses have often been considered less efficient, necessitating a new purlin using corrosion-resistant material to increase building efficiency. This study was an attempt design nine-metre glass-fibre-reinforced polymer (GFRP) composite for warehouse Bontang-East Kalimantan, Indonesia. The selected this the Z profile of pultruded beams GFRP t...

In this study, polymer-hybrid natural fibers composites were prepared using unsaturated polyester resin (UPR) as the matrix and a filler date palm leaf fiber (DPLF) orange peel (OPF). The effect of DPLF OPF on mechanical behavior (tensile strength elongation at break), moisture absorption, UPR gel time (tgel) peak exothermic temperature (Tpeak) determined. reinforced with processed by hand lay-...