Authors:Przemysław Rybiński, Grażyna Janowska, Małgorzata Jóźwiak, and Agnieszka Pająk
This paper presents the effect of halloysite intercalated with a base or modified montmorillonite on the thermal properties and flammability of peroxide and sulfur vulcanizates of styrene–butadiene rubber (SBR). Based on the test results obtained by means of thermal analyses (DTA, TG, DTG, and DSC), oxygen index and microcalorimeter (FAA) it has been found that the thermal stability and flammability of the nanocomposites investigated depend on the spatial network structure as well as the content and type of nanoadditive in the vulcanizate obtained. The nanofillers used considerably reduce the flammability and fire hazard of the cross-linked SBR.
Authors:Ewa Olewnik, Krzysztof Garman, Grzegorz Piechota, and Wojciech Czerwiński
heating rate of 10 K/min.
Thermalanalyses of surfactant-modified montmorillonite and nanocomposites were carried out at a heating rate of 10 K / min under the flow of air and nitrogen from room temperature to 873 K. All measurements were performed
10% of the total mass of the mixture. The mixtures were subjected to thermal analysis for the purpose of determining the processes occurring within them during thermal treatment and for the determination of sintering temperature.
and pyrolysis effects) during MA, we used coupled thermalanalysing equipment (DSC/TG/QMS). Furthermore, shape morphology (by SEM and LOM), particle size distribution (using laser particle sizing) and microhardness of the powders were also
Authors:E. Radomińska, T. Znamierowska, and W. Szuszkiewicz
mixtures were presynthesized via the solid-phase reaction by heating at 950 °C for 2 h.
The sinters obtained by the above methods were cooled down to room temperature and homogenized by rubbing, then were subjected to thermalanalyzing. The phase
Authors:Andrzej Mianowski, Izabela Baraniec-Mazurek, and Rafał Bigda
, when a 2 = large.
Thus, one may note that the quasi-equilibrium conditions prevent accurate determination of enthalpy of reaction Δ r H , because dynamic conditions directly dictate relationships dominated by activation energy E . Thermal
were recorded on a HZG 4 diffractometer, using Ni-filtered CuKα radiations. Measurements were taken over the range of 2θ = 5–50° with resolution of 0.05°.
Thermalanalyses of the prepared complexes were carried out by the thermogravimetric (TG
Differential thermalanalyses were performed using the Paulik–Paulik–Erdey type derivatograph (MOM, Hungary). Conditions of the measurements were the following: air atmosphere, mass of each sample 500 mg, heating rate 10 °C min −1 , quartz crucibles, Al 2 O 3
Authors:Barbara Barszcz, Joanna Masternak, Maciej Hodorowicz, and Agnieszka Jabłońska-Wawrzycka
pyrazine-2-carboxylate (L 2 ) suitable for X-ray investigation and thermalanalyses were prepared according to the following procedure: a solution of pyrazine-2-carboxylic acid (HL 2 ) (2 mmol) in redistilled water (15 mL) heated to 343 K was stirred, while