The comparison of relaxation events with spectroscopic properties of polymer composites with fibrillar dopings on the basis of low density polyethylene and polypropylene

Mamedov, Shaval; Alekperov, V. A.; Ozcanh, Yesim

doi:10.1002/masy.19991460110

Cited by 3 publications

(4 citation statements)

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“…(2) and (3), are respectively mechanical and electrical life-time in a given s tension and E electric field strength. t o (10 K12 K10 K14 s) is a special vibration period and R is the universal gas constant; U o and W o are the initial activation energy of the degradation process; c and g are structure-sensitive parameters.…”

Section: Interpretations Of the Experimental Resultsmentioning

confidence: 99%

“…The mechanical and electrical degradation properties were examined for all the composites in our previous studies [1,2] except LDPE/diamond composites.…”

Section: Interpretations Of the Experimental Resultsmentioning

confidence: 99%

“…It can be said that the optimum additive amount agrees with the amorphous to crystalline ratio. It is known [1,2] that the improvement of the material properties is about 20-30% for organic additive and 0.2-0.5% for inorganic additive and mutual interactions between supramolecular formations are stronger [3,4].…”

Section: Dw-f(e)mentioning

confidence: 99%

“…In our previous studies [1][2][3][4][5][6][7], the dynamical-mechanical and electrical durabilities and optical properties of polymer composites (based on polyolefin) with different organic (PP/ PE fiber) and inorganic (glass fiber) additives are investigated except for LDPE/diamond composites.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Temperature and time dependence of electrical and mechanical durability of LDPE/diamond composites

Boydaǧ¹,

Özcanli²,

Alekberov³

et al. 2005

Composites Part B: Engineering

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Section: Interpretations Of the Experimental Resultsmentioning

confidence: 99%

“…The mechanical and electrical degradation properties were examined for all the composites in our previous studies [1,2] except LDPE/diamond composites.…”

Section: Interpretations Of the Experimental Resultsmentioning

confidence: 99%

Section: Dw-f(e)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Temperature and time dependence of electrical and mechanical durability of LDPE/diamond composites

Boydaǧ¹,

Özcanli²,

Alekberov³

et al. 2005

Composites Part B: Engineering

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Comparison of optical properties and mechanical/electrical degradation of some low density polyethylene-and polypropylene-based polymer blends

2007

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Boydağ, Fatma Şenel (Dogus Author)In this study, the optical properties as well as mechanical and electrical degradation of low-density polyethylene (LDPE)/polypropylene fiber (PP fiber) (10–50% PP fiber), polypropylene (PP)/PP fiber (10–50% PP fiber), and LDPE/diamond (0.1–3% diamond) blends, which are prepared by hot pressing method, with changing thicknesses ranging from 30 to 225 µm, are compared. The spectra, in the wavelength range 200–2500 nm, are examined. Based on optical absorption spectra obtained, Tauc graphs are plotted. Determined values of the direct optical energy gap (E d opt ), the indirect optical energy gap (E i opt ), the width of the band (ΔE), and ultraviolet transmittance (TUV) are listed. The direct E d opt and indirect E i opt values for organic blends are in the range of 3.10–3.17 eV and 1.52–2.99 eV; for inorganic blends they are 1.80–4.13 eV and 1.55–4.7 eV respectively. The electrical strength (ε) and the mechanical tension (σ) have been investigated, and graphs (the dependence of the electrical life time log τε on ε) are given. The experimental results are analyzed from the viewpoint of the validity of the thermofluctuation theory. LDPE and LDPE/0.5% diamond composite parameters consecutively changed: σ from 68 to 82 MPa, ε from 60·106 to 85·106 V/m, mechanical lifetime τσ from 10 to 1.5·105 sec, electrical lifetime τε from 2· 103 to 2·105 sec, and structure-sensitive parameters γ and χ — from 1.48 to 1.18 (J)MPa/mole and from 0.97 to 0.70 (J)Vm−1/mole respectively. The values of mechanical and electrical durability were observed to increase by 20 and 41%, respectively, for LDPE/0.5% diamond composite

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Simultaneous Effect of Mechanical Tension on Electrical Lifetime of Some Inorganic Composites

et al. 2007

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In this work, the simultaneous effect of mechanical tension (σ) and electrical strength (E) on electrical lifetime (τE) for pure low density polyethylene (LDPE)/polypropylene (PP) and composites with different commercial diamond-additive/glass fiber additive percentages is experimentally studied. The role of this effect on degradation mechanisms is investigated. log τE,σ-f(E) and Eσ-f(σ) graphs are drawn, new equations are proposed and determined parameters at constant temperature for pure LDPE and PP, and for optimum composites (LDPE/0.5% diamond, PP/0.5% glass fiber) are listed. The results indicate that the degradation speed decreases more for composites than for pure LDPE and PP. The electrical durability for composites after the simultaneous effect of σ decreases 18–20%, while for pure LDPE and PP, it decreases 50–55%.

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The comparison of relaxation events with spectroscopic properties of polymer composites with fibrillar dopings on the basis of low density polyethylene and polypropylene

Abstract: In this study, the mechanical and electrical degradation properties of the composites of polypropylene (PP)+PP fibers, low‐density polyethylene(LDPE)+PP fiber, and PP+fiber glass have been investigated and the validity of Zhourkov's thermofluctuation theory has been shown.

Cited by 3 publications

References 0 publications

Temperature and time dependence of electrical and mechanical durability of LDPE/diamond composites

Temperature and time dependence of electrical and mechanical durability of LDPE/diamond composites

Comparison of optical properties and mechanical/electrical degradation of some low density polyethylene-and polypropylene-based polymer blends

Simultaneous Effect of Mechanical Tension on Electrical Lifetime of Some Inorganic Composites

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