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Pulverized mold residue of cured epoxy molding compound was reused to produce poly (vinyl chloride) composites with the aim to recycle resources in a more profitable and environmental concern way. The mold residue powder with functional groups on the surface was reactive to polar resins as the results of FT-IR spectrum (FT-IR). Mechanical tests, differential scanning calorimetry (DSC), vicat softening...
Epoxy polymers reinforced with a premixed epoxy/nano-silica masterbatch or dry non-surface-treated nano-silica and ground micro-silica flour were compared. Cured plates of epoxy containing both nano-particles (up to 15 %wt) and micro-particles (up to 51 %wt) of silica were produced and tested. The glass transition temperature, Tg, of the epoxy was measured using differential scanning calorimetry (DSC),...
Polyamide 6 (PA6) nanocomposites filled with 2, 4, 6, 8 wt% hydroxyapatite nanorods (nHA) were compounded in Brabender extruder followed by injection molding. The effect of nHA additions on the structure, mechanical properties and in vitro bioactivities of such nanocomposties were investigated. XRD patterns showed that PA6 crystallized exclusively in the ??-form by adding nHA. DSC analysis revealed...
High density polyethylene HDPE/SiO2 nanocomposites were prepared by melt compounding using a twin screw extruder. The thermal properties of the composites were investigated by differential scanning calorimetry (DSC). The microstructures of nanocomposites were characterized by scanning and transmission electron microscopy (SEM and TEM). The dielectric breakdown strength of the nanocomposites was investigated...
In this paper, a novel inorganic - organic composite electrolyte was prepared by using titania nanotube (TiNTs) as the filler in polyethylene glycol (PEG) for solid state dye sensitized solar cells (DSSCs). The DSSCs fabricated with optimized composite electrolyte, containing 10 wt% TiNTs in PEG, showed much improved conversion efficiency of 4.5% in comparison with DSSC fabricated with PEG-only electrolyte...
An intercalation nonlinear-optical (NLO) polyimide was synthesized by the ring-opening polyaddition of 4,4'-(Hexafluoroisopropylidene) diphthalic Anhydride (6FDA) and [(6-nitrobenzothiazol-2- yl)diazenyl]phenyl-1,3-diamine. Then, sol-gel technique was adopted, utilizing 3- aminopropyltriethoxysi- lane (APTES) and tetraethoxysilane (TEOS). The polyimide/silica hybrid material was obtained. The polyimide...
A series of the polyimide-silica NLO nanohybrid materials were synthesized from 3,3', 4,4'- Bisphenyltetracarboxylic (BPDA), 2,2-Bis(3-amino-4-hydroxyphen-yl) hexafluoropropane (6FHP), nonlinear optical (NLO) molecule 4-(N-2-Hydroxyethyl-N-methylamino)-4'-[(6-nitroben-zothiazol-2-yl)-diazenyl] azobenzene (HNBDA), coupling agent APTES and hydrolysate of TEOS via sol-gel process. The TEOS contents in...
An epoxy matrix varnish, used for topping treatment of electrical machines stators, was studied. The experimental nanocomposites were prepared using the same organically modified clay varying the mixing process. The nanostructure of each material was assessed by means of WAXRD. The homogeneity at the micron level was checked via SEM observations of brittle fractured sections. DSC analyses were conducted...
The need for faster, smaller, and more reliable and efficient products has resulted in increase of heat generated in microelectronic components. The removal of the heat generated is an important issue in electronic packaging. The present research work aims at developing a new class of nano-thermal interface material (nanoTIM) that has low thermal resistance, high thermal conductivity and mechanical...
A bioactive and biodegradable composite containing hydroxyapatite (HA) and polyhydroxybutyrate (PHB) was developed for bone tissue repair. A manufacturing process, which consisted of compounding, pelletising, drying, and injection moulding, was established for producing the composite. The HA/PHB composite containing 10, 20, 30 and 40% by volume of particulate HA was successfully made. The distribution...
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