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Mechanical Properties of Polymers and Composites
14 Dec 1993-
TL;DR: In this article, the authors discuss various mechanical properties of fiber-filled composites, such as elastic moduli, creep and stress relaxation, and other mechanical properties such as stress-strain behavior and strength.
Abstract: Mechanical Tests and Polymer Transitions * Elastic Moduli * Creep and Stress Relaxation * Dynamical Mechanical Properties * Stress-Strain Behaviour and Strength * Other mechanical Properties * Particulate-Filled Polymers * Fiber- Filled Composites and Other Composites.
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TL;DR: In this article, the effect of particle size variation of fly ash, as filler with different concentration (5-40%, wt/wt), on various properties of recycled polyethylene terepthalate (RPET) composite material were evaluated and microstructure was investigated through scanning electron microscopy (SEM).
Abstract: This study deal with the effect of particle size variation of fly ash, as filler with different concentration (5–40%, wt/wt), on various properties of recycled polyethylene terepthalate (RPET). The mechanical, rheological, electrical and thermal properties of the composite material were evaluated and microstructure was investigated through scanning electron microscopy (SEM). It was seen that micro particle inclusion increased the mechanical properties of the system. From the SEM, it was observed that good dispersion and also very good interaction of fly ash particle—polymer matrix occurred.
27 citations
TL;DR: In this article, the dynamic mechanical, tensile and impact properties of polypropylene/ethylene-propylene-diene terpolymer (PP/EPDM) blends were investigated in the entire composition range.
27 citations
TL;DR: The humidity sensor using the sensitive capacitive-dependent crystal is described, and the probe sensitivity (dependence of df on the dCx) is presented, as well as the humidity surface-measuring method.
Abstract: The humidity sensor using the sensitive capacitive-dependent crystal is described. Presented is the probe sensitivity (dependence of df on the dCx). In addition, the new idea of excitation of the entire humidity sensor with stochastic test signals is described, and the humidity surface-measuring method is given. The latter includes the influence of test signals on the weighting function uncertainty. The results of the air-humidity measurement and water absorption measurement in glass-fiber resins are shown experimentally. The uncertainty of the surface humidity measurement is less than 0.1% (T=15-25 /spl deg/C and air-humidity=50 to 98%).
27 citations
TL;DR: In this article, organic-inorganic antistatic hybrid acrylic coatings were prepared and trialkoxy-silyl ammonium salt was added to the photocurable formulations in order to introduce an Antistatic additive which could be covalently linked to the hybrid network through a co-condensation reaction involving the alkoxy groups.
27 citations
TL;DR: In this article, the thermal conductivity of compression-moulded polypropylene (PP) and PP filled with 5-15% zinc oxide (ZnO) or calcium carbonate (CaCO3) nanoparticles, prepared by extrusion, was studied using a thermal conductivities analyzer (TCA).
Abstract: The thermal conductivity (TC) of compression-moulded polypropylene (PP) and PP filled with 5–15% zinc oxide (ZnO) or calcium carbonate (CaCO3) nanoparticles, prepared by extrusion, was studied using a thermal conductivity analyzer (TCA). The effect of nanoparticle content and crystallinity on the thermal conductivity was investigated using conventional methods, including SEM, XRD, and DSC. The incorporation of nanoparticles improved the crystallinity and thermal conductivity simultaneously. The experimental TC values of the PP nanocomposites with different level of nanoparticles concentration showed a linear increase with an increase in crystallinity. The TC improvement in PP/ZnO nanocomposite was greater than that of PP/calcium carbonate nanocomposites. This fact can be attributed to the intrinsic, better thermal conductivity of the ZnO nanoparticles. Several models were used for prediction of the TC in the nanocomposites. In the PP/ZnO nanocomposites the TC values correlated well with the values predict...
27 citations
Cites background or methods from "Mechanical Properties of Polymers a..."
...[6–10] An approach of current interest to improve the thermal conductivity of polymers is the addition of nanostructured inorganic materials with high TC values.[11] The crystallization behavior, structure, and morphology developed have been investigated for polypropylene containing different nanofillers by Radhakrishnan et al....
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...Lewis and Nielsen[7,11] modified the Halpin-Tsai equation[31] for mechanical properties to include the effect of the shape of the particles and the orientation or type of packing for a two-phase system....
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