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Access type: UnknownSubject: search.filters.subject.Antimony trioxide

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    Effect of antimony trioxide and carbon black on the mechanical properties and ablation properties of liner insulation in rocket motors
    (2021-01-01)
    Kitinirunkul, Thirapat
    ;
    Kitchaiya, Prakob
    ;
    Kiriratnikom, Chesda
    ;
    Boonyarat, Paisarn
    ;
    Nuanklai, Suchuchchai
    This study focused on the mechanical properties and ablation properties of liner insulation in rocket motors for improving rocket performance by means of tensile strength, elongation, ablation rate and density. The following parameters were varied: amount of zinc oxide, antimony trioxide and carbon black (N550). It was found that the insulation of the rocket motors with antimony trioxide and carbon black provided higher the elongation and ablation rate. Thus, it was able to endure more heat from hot gas in combustion chamber. The result suggests that use of antimony trioxide and carbon black as filler in liner insulation can improve the thermal insulators and case-bonded in rocket motor between the solid propellant and the rocket motor tube.
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    Electrochemical sensor based on PANI/MnO2-Sb2O3 nanocomposite for selective simultaneous voltammetric determination of ascorbic acid and acetylsalicylic acid
    (2016-12-01)
    Puangjan, Apinya
    ;
    Chaiyasith, Suwan
    ;
    Wichitpanya, Saniporn
    ;
    Daengduang, Sirirat
    ;
    Puttota, Silarin
    A new electrochemical sensor made from nanocomposite of manganese dioxide (MnO<inf>2</inf>)-antimony trioxide (Sb<inf>2</inf>O<inf>3</inf>) was fabricated on polyaniline (PANI) - patterned fluorine doped tin oxide (FTO) electrode (PANI/MnO<inf>2</inf>-Sb<inf>2</inf>O<inf>3</inf> nanocomposite/FTO) through a simple potentiostatic deposition method. The properties of the nanocomposite were characterized by field emission scanning electron microscopy, X-ray diffraction, electrochemical impedance spectroscopy and other electrochemical techniques. Such nanostructure combines the advantages of PANI (high conductivity and stability) with that of electrocatalytic species (good electrochemical activity). The sensor was applied for simultaneous determination of ascorbic acid (AA) and acetylsalicylic acid (ASA). The linear relationships between their current intensity and concentration were in the range of 6–265.42 nmol L<sup>− 1</sup> and 1.2–228.68 nmol L<sup>− 1</sup> with detection limit (S/N = 3) of 1.05 nmol L<sup>− 1</sup> and 0.20 nmol L<sup>− 1</sup>, respectively. Experimental results demonstrated that the sensor possesses high selectivity and suffers no interference from competing species. Moreover, it successfully detected AA and ASA in human urine samples with highly satisfactory results.