Aluminum reinforcement of some polyethylenes

Böhme, R.

doi:10.1002/app.1968.070120509

Cited by 21 publications

(6 citation statements)

References 7 publications

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“…The increase of the mechanical loss cannot be explained by the agglomeration of the small particles of the filler, because formation of such kinds of aggregates can take place only at higher degrees of filling [9]. It seems that the observed increase of mechanical losses is a result of an adsorption of the binder on the surface of the filler and intercalation of fragments of the macromolecules into the interlayer space of the ceramic grains.…”

Section: Dynamic Mechanical Propertiesmentioning

confidence: 73%

Interphase phenomena in superconductive polymer-ceramic nanocomposites

Davtyan¹,

Tonoyan²,

Tataryan³

et al. 2006

Composite Interfaces

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Dynamic mechanical properties (elastic moduli, phase angle) for superconducting (SC) polymer-ceramic composites based on Y 1 Ba 2 Cu 3 O 7−x SC oxide ceramic and superhighmolecular polyethylene have been investigated. The analysis of the obtained data shows a strong interaction of the polymeric binder with the surface of the ceramic grains. It is concluded that changes of packing and structure of the macromolecules occur at the ceramic-polymer interface. This is confirmed by melting enthalpy measurements of SC polymer-ceramic composites of different filler content.Scanning electron microscopy studies of the high temperature SC composites showed that the ceramic grains are evenly covered by the binder for both amorphous and crystalline polymers. EPR (electron paramagnetic resonance) spectra of polymer-ceramic composites have shown that the intensity of the EPR signals of Cu 2+ (1) depends on the nature and the content of binder. The Mn, Co, Zn, Ni containing superconducting composites have been obtained by frontal polymerization.

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Section: Dynamic Mechanical Propertiesmentioning

confidence: 73%

Interphase phenomena in superconductive polymer-ceramic nanocomposites

Davtyan¹,

Tonoyan²,

Tataryan³

et al. 2006

Composite Interfaces

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“…These values are comparable to similar PE systems using typical inorganic fillers. For example, some reported relative modulus values are about 2.0 with wollastinite,14 1.5–1.8 with CaCO 3 ,22–23 1.5 with aluminum,24 1.6 with kaolin,23 1.3 with talc,25 and 1.5 with mica 25. The higher modulus of the inorganic fillers plays a minor role with the relatively low modulus matrix.…”

Section: Resultsmentioning

confidence: 99%

Mechanical properties of blends of HDPE and recycled urea-formaldehyde resin

Bliznakov

White

Shaw

2000

J. Appl. Polym. Sci.

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The mechanical properties of blends of high‐density polyethylene (HDPE) with a recycled thermosetting filler, urea‐formaldehyde grit (UFG), were evaluated in the range of 0–23% of filler by volume. Ethylene‐acrylic acid (EAA) copolymers and an ionomer based on EAA were evaluated as compatibilizers. The observed tensile modulus of the ionomer‐treated blends was raised to three times the modulus of virgin polyethylene, whereas the modulus of the untreated blends reached double that of polyethylene. The ionomer‐treated blends also showed a higher tensile strength than the blends without filler treatment. The improvement in the properties was assigned to an increased interaction between the filler and the polymer matrix. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 3220–3227, 2000

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“…On the other hand, it has been documented frequently that damping (loss factor) is decreased in the glass region [3,5,6], and is broadened along the temperature scale by fillers [1]. In rubbery matrices, fillers tend to increase relative damping [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Nanofiller-Polymer Interactions At and Above the Glass Transition Temperature

Zhu

Sternstein

2000

MRS Proc.

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Rheological data are reported for a series of fumed silica filled PVAc samples, using fillers of different specific surface areas and surface treatments. Data at the glass transition temperature and 45 C above Tg are presented. The addition of filler systematically increases Tg, and all samples obey time-temperature superposition. However, temperature normalized and frequency normalized plots of loss modulus indicate that there is no change in the dispersion of the glass transition, with the only exception being a surface modified with covalently bonded polymer chains. Thus, contrary to expectations, an increase in filler content or change in surface treatment has no effect on the relative shape of the relaxation time spectrum at the glass transition. At 45 C above Tg, different behavior is observed. The filler concentration has a major effect on the nonlinearity of dynamic moduli vs. strain amplitude, with higher filler content reducing the strain amplitude at which nonlinear behavior is observed. Specific filler surface treatments result in major changes in the shape of the loss factor versus strain amplitude relationship. These results suggest that interfacial interactions strongly modify the far-field polymer behavior with respect to chain entanglement slippage at large strains.

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Aluminum reinforcement of some polyethylenes

Abstract: SynopsisFiller reinforcement by aluminum powder was correlated to filler-matrix adhesion and was found to be a simple exponential function of the volume fraction for a series of polyethylenes.

Cited by 21 publications

References 7 publications

Interphase phenomena in superconductive polymer-ceramic nanocomposites

Interphase phenomena in superconductive polymer-ceramic nanocomposites

Mechanical properties of blends of HDPE and recycled urea-formaldehyde resin

Nanofiller-Polymer Interactions At and Above the Glass Transition Temperature

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