A composite is a material formed from the combination of two or more constituent materials through an inhomogeneous mixture. The ironwood waste has less economic value, which makes authors interested in conducting research using mosquito nets and particle waste. Which to find out effect volume fraction angle orientation fiber polyester-ulinwood powder (Eusideroxylon zwageri)-mosquito wire on be...

Methyl methacrylate resins with identical average pore diameter (250 A) and surface area (500 m2/g) but with varied particle size (35 to 560-710 microm) were employed to study how immobilization resin particle size influences Candida antarctica Lipase B (CALB) loading, fraction of active sites, and catalytic properties for polyester synthesis. CALB adsorbed more rapidly on smaller beads. Satura...

Using the experimental determinations obtained on basis of compressive stress, some mechanical properties were studied for composite materials with matrix three types resin, epoxy, unsaturated polyester and hybrid based Dammar natural which was reinforced isophthalic resin granules NPG (Neopentyl Glycol) Chromat Kayan / Javari Payette type. The stress-strain diagrams, yield strength, strength m...

This work presents a study on the effects of luffa fibers and gamma radiation as tools for mechanical improvement of polymer concrete based on a polyester resin/foundry sand mixture. Different concentrations of irradiated and non-irradiated fibers (0.3, 0.6 and 0.9 wt%) and higher irradiation doses were used. The results show that the compressive strength and flexural strength values decrease g...

The purpose of this study was to evaluate the degree of conversion (DC) of the Z250 composite, using six photo-activation methods, two storage periods and two preparation techniques of the FTIR specimens (n = 3). For the KBr pellet technique, the composite was placed into a metallic mold and photo-activated as follows: continuous light, exponential light, intermittent light, stepped light, PAC ...

The aim of this study is to assess the environmental performance manufacturing process glass/polyester laminates as well estimate their fire behaviour and smoke release. Life Cycle Assessment was conducted according ISO14040/44 standard by using CML-IA 2000 Baseline Midpoint method. cone calorimeter a method ISO 5660. tests were performed under 25 kW/m2 heat flux 50 kW/m2. results showed that r...