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Morozov, N. N.; Bakunov, V. S.; Morozov, Evgeny; Aslanova, L. G.; Granovskii, P. A.; Prokshin, V. V.; Zemlyanitsyn, A. A.

doi:10.1023/a:1010947415202

Cited by 45 publications

(12 citation statements)

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“…The application temperature range of basalt fibers is –200 to +700 °C. In contrast, the application temperature range of glass fiber is only −60 to +450 °C [6]. In addition, basalt fibers have similar or better mechanical property—improved thermal and chemical stability—than that of E-glass fibers [7,8,9].…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution

et al. 2018

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In this paper, the corrosion mechanism and tensile properties of basalt fibers in sodium hydroxide (NaOH) solution with various concentrations and temperatures were studied. The hydroxyl ions disrupt the –Si–O–Si– and –Si–O–Al– bonds leading to the formation of insoluble hydroxides. With the continuation of the hydration reaction, a hydration layer (corrosion shell) with high content of calcium, iron, manganese and titanium ions was formed on the fiber surface. The corrosion shell enabled an increase in the strength and elongation at break of basalt fibers, significantly. Results showed that the tensile strength of fibers was strongly dependent on temperature and concentration. After the basalt fibers were immersed in 1 mol/L NaOH solution at 50 °C for 1 h, 3 h, 6 h, 1 day and 3 days, their retention ratios of strength were 67.6%, 57.8%, 52.5%, 49.0%, 58.2%, respectively. Higher temperature accelerated the corrosion rate of basalt fibers, shortened the formation time of the corrosion shell and increased mass loss. From 25 to 70 °C, the mass loss of fibers increased from 2.4% to 33.8% for fibers immersed in 1 mol/L NaOH for 3 days. The experimental results from quantitative x-ray fluorescence (XRF) showed that the mass loss of basalt fibers was mainly due to the leaching of silicon, aluminum and potassium ions.

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Section: Introductionmentioning

confidence: 99%

Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution

et al. 2018

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“…The strength properties of high-quality basalt fiber are intermediate between E-type and S-type glass fibers [7]. The other beneficial properties of basalt fiber include a high vibration-damping capacity, thermal and acoustic insulation, as well as high hardness and abrasion resistance [6,7,8,9,10,11,12]. Basalt fiber also has good resistance to the effect of atmospheric agents, alkalis, and acids.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Composites of Polylactide with Basalt and Carbon Fibers and Their Thermal Treatment

Kuciel

Romańska

2018

Materials

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In this research, polylactide was hybrid-reinforced and heat-treated in order to obtain durable structural materials with the use of eco-friendly components. Differential scanning calorimetry (DSC) analysis, tensile tests at various temperatures, Vicat tests, impact tests, and microscopic observations were conducted on the annealed and non-heat-treated specimens. The theoretical and true density, as well as water absorption, were also determined. The simultaneous introduction of chopped carbon and basalt fibers in equal mass fractions of 7.5% and 12.5% resulted in satisfactory increases in stiffness and tensile strength. The reinforcing effect was more efficient for the heat-treated composites, especially at elevated temperatures. Heat treatment significantly increased the degree of crystallinity of the matrix, improving heat resistance and reducing water absorption. It also reduced the stress concentrations in the injection-molded specimens.

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“…, 2α 3 − 1 (54) for integer 2α 2 and 2α 3 . At the same time, this eigenvalue integral (42) is not only a τ -function of the Toda chain, it is simultaneously a τ -function of the discrete Toda chain [35]. As a τ -function, the integral (42) also satisfies the Hirota identities (20)- (24).…”

Section: Discrete Painlevé: Integrability In Miwa Variables + String mentioning

confidence: 93%

Discrete Painlevé equation, Miwa variables and string equation in 5d matrix models

Миронов

Морозов

Zakirova

2019

J. High Energ. Phys.

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The modern version of conformal matrix model (CMM) describes conformal blocks in the Dijkgraaf-Vafa phase. Therefore it possesses a determinant representation and becomes a Toda chain τ -function only after a peculiar Fourier transform in internal dimensions. Moreover, in CMM Hirota equations arise in a peculiar discrete form (when the couplings of CMM are actually Miwa time-variables). Instead, this integrability property is actually independent of the measure in the original hypergeometric integral. To get hypergeometric functions, one needs to pick up a very special τ -function, satisfying an additional "string equation". Usually its role is played by the lowest L−1 Virasoro constraint, but, in the Miwa variables, it turns into a finite-difference equation with respect to the Miwa variables. One can get rid of these differences by rewriting the string equation in terms of some double ratios of the shifted τ -functions, and then these ratios satisfy more sophisticated equations equivalent to the discrete Painlevé equations by M. Jimbo and H. Sakai (q-PVI equation). They look much simpler in the q-deformed ("5d") matrix model, while in the "continuous" limit q −→ 1 to 4d one should consider the Miwa variables with non-unit multiplicities, what finally converts the simple discrete Painlevé q-PVI into sophisticated differential Painlevé VI equations, which will be considered elsewhere.

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Cited by 45 publications

References 0 publications

Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution

Corrosion Behavior and Mechanism of Basalt Fibers in Sodium Hydroxide Solution

Hybrid Composites of Polylactide with Basalt and Carbon Fibers and Their Thermal Treatment

Discrete Painlevé equation, Miwa variables and string equation in 5d matrix models

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