Influence of cenosphere particles on thermal properties composites of silicon rubber

Rybiński, Przemysław; Żukowski, Witold; Bradło, Dariusz

doi:10.1007/s10973-015-4829-0

Cited by 14 publications

(8 citation statements)

References 39 publications

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“…The first step, which begins at a temperature of T = 335 °C, and whose maximum rate of thermal decomposition at a temperature of T = 383 °C amounts to 0.98%/min, is related above all to the reactions of depolymerization and degradation of SR rubber to low-molecular-weight cyclic volatile compounds. The second step of thermal decomposition, whose beginning is registered at a temperature of T = 420 °C, and whose maximum rate at a temperature of T = 516 °C amounts to 7.15%/min, is related to the reactions of both degradation and thermal destruction (Figure 3) [13,25,26].…”

Section: Resultsmentioning

confidence: 99%

Impact of Basalt Filler on Thermal and Mechanical Properties, as Well as Fire Hazard, of Silicone Rubber Composites, Including Ceramizable Composites

et al. 2019

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This article illustrates the impact of basalt filler, both in the form of basalt flakes and basalt fibers, on thermal and mechanical properties, as well as on the fire hazard, of silicone rubber (SR) composites, including ceramizable composites. In addition to basalt filler, ceramizable composites contain mineral fillers in their composition in the form of silica and calcium carbonate, inorganic fluxes such as zinc borate and glass frit, and melamine cyanurate as a flame retardant. The obtained composites were analyzed from the point of view of their morphology, rheological and thermal properties, flammability, and mechanical properties before and after the ceramization process. The obtained research results indicate that the basalt filler has an unambiguous impact on the improvement of thermal properties and the reduction of flammability in the analyzed composites. The results of morphological analyses of ceramizable composites before and after the process of their ceramization indicate a definite impact of the basalt filler on the structure of the formed ceramic layer. An increase in its homogeneity exerts a direct impact on the improvement of its mechanical parameters.

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Section: Resultsmentioning

confidence: 99%

Impact of Basalt Filler on Thermal and Mechanical Properties, as Well as Fire Hazard, of Silicone Rubber Composites, Including Ceramizable Composites

et al. 2019

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“…It is possible that metals with a variable valence, on account of their low catalytic activity, facilitate the stabilization of boundary layer [12].…”

Section: Introductionmentioning

confidence: 99%

Effect of cenospheric fillers on the flammability and fire hazard of silicone rubber composites

Rybiński

Żukowski

Bradło

2016

J Therm Anal Calorim

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This paper presents the results of testing the flammability of silicone rubber composites containing fillers, such as cenospheres, cenospheres covered with iron, attapulgite, wollastonite, aluminum hydroxide and silica. In order to increase the insulating character of boundary layer, boron trioxide was incorporated into the composites of silicone rubber as a ceramization additive. The flammability of the composites was tested with the use of a cone calorimeter. The composition of the gaseous products of thermal decomposition was determined quantitatively and qualitatively in the system with intensive stirring in the fluidal bed, under isothermal conditions at temperatures T = 550, 650 and 750°C. All the test results show that the fillers used, especially with ceramization additives considerably reduce the fire hazard of silicone rubber composites containing these fillers.

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“…In thermogravimetric measurements, the degree of decomposition (conversion) can be calculated as follows [20]:

X = \frac{W_{0} - W_{t}}{W_{0} - W_{f}}

where X is degree of decomposition; W t , W 0 , W f are the actual, initial, and final mass of the sample, respectively. A typical model for the kinetic process can be expressed as:

\frac{d X}{d t} = k f (X)

where dx/dt is the decomposition rate, f(X) , the function of X , which depends on the particular decomposition mechanism, and k is the decomposition rate constant, which can be expressed by the Arrhenius equation:

k = A \exp (\frac{- E}{R T})

where A is the pre-exponential factor (s −1 ), E is the activation energy (J/mol), R is the gas constant (8.314 J·mol −1 ·K −1 ), and T is the temperature (K).…”

Section: Methodsmentioning

confidence: 99%

Effect of POSS Particles and Synergism Action of POSS and Poly-(Melamine Phosphate) on the Thermal Properties and Flame Retardance of Silicone Rubber Composites

et al. 2018

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This article presents flame retardant compounds for silicone rubber (SR) in the form of polyhedral oligomeric silsequioxanes (POSS), containing both isobutyl groups and amino-propyl (AM-POSS) or chloro-propyl group (HA-POSS) or vinyl groups (OL-POSS). Silsequioxanes were incorporated into the silicone rubber matrix in a quantity of 3 and 6 parts by wt by the method of reactive stirring with the use of a laboratory mixing mill. Based on the analyses performed by TG (Thermogravimetry) FTIR (Fourier Transform Infrared Spectroscopy), conical calorimeter, and SEM-EDX (Scanning Electron Microscopy and Energy Dispersive X-ray Spectroscopy) methods, the thermal degradation mechanism of non-cross-linked and cross-linked silicone rubber has been elucidated. The effects of POSS, and POSS in a synergic system with melamine polyphosphate (MPP), on the thermal properties and flammability of silicone rubber composites were presented. Based on the test results obtained, a mechanism of flame retardant action POSS and POSS-MPP has been proposed. It has been shown that POSS, especially with MPP, considerably increases the thermal stability and decreases the flammability of the SR rubber composites under investigation.

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Influence of cenosphere particles on thermal properties composites of silicon rubber

Cited by 14 publications

References 39 publications

Impact of Basalt Filler on Thermal and Mechanical Properties, as Well as Fire Hazard, of Silicone Rubber Composites, Including Ceramizable Composites

Impact of Basalt Filler on Thermal and Mechanical Properties, as Well as Fire Hazard, of Silicone Rubber Composites, Including Ceramizable Composites

Effect of cenospheric fillers on the flammability and fire hazard of silicone rubber composites

Effect of POSS Particles and Synergism Action of POSS and Poly-(Melamine Phosphate) on the Thermal Properties and Flame Retardance of Silicone Rubber Composites

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