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Influence of aluminum trihydrate particle size on the combustion of polydimethylsiloxane-based rubber compounds (1990)

Khalturinskiy, N. A. ; Zdorikova, G. A. ; Kolesnikov, A. A. ; [et al.]

Springer

Journal of thermal analysis and calorimetry 36 (1990), S. 2079-2086

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ISSN: 1572-8943

Source: Springer Online Journal Archives 1860-2000

Topics: Chemistry and Pharmacology

Description / Table of Contents: Zusammenfassung Mittels Thermoanalyse, Massenspektrometrie und Pyrolyse bei hohen Temperaturen wurde die thermische Zersetzung von Al(OH)3-Pulvern und die Mischungen aus Polydimethylsiloxan und feuerhemmenden Mitteln mit unterschiedlicher Korngröße (2–45 m) untersucht. Man fand, daß die Partikelgröße des feuerhemmenden Mittels sowohl die physikalisch-mechanischen Eigenschaften als auch das Brennverhalten der Polymermischungen auf Polydimethylsiloxanbasis beeinflußt. Das Strecken des Polymers mit feingemahlenem flammenhemmenden Mittel verbessert zwar die Zugeigenschaften der Vulkanisate, die Flammenhemmung wird aber eindeutig vermindert. Die Zeit für den freien Brennvorgang und die Größe der verbrannten Teile wird erhöht, der Sauerstoffindex und der Zündverzug sinken, während die Flammentemperatur nahe der Oberfläche der Brennprobe ansteigt.

Notes: Abstract The regularities of thermal degradation of Al(OH)3 powders and the compositions of polydimethylsiloxane and fire retardant with different size of particles (from 2 to 45μm) were studed by the methods of the thermal analysis (TA), mass-spectrometry (MS) and the high temperature pyrolysis. It was shown that the size of flame retardant particles influences the physico-mechanical characteristics and combustion of polymeric compositions on the base of polydimethylsiloxane. The filling of the polymer with fine flame retardants improves the tensile properties of vulcanizates but the flame retardance is markedly decreased. The time of free combustion and the length of the burnt out parts are increased, the oxygen index and time of ignition delay are decreased while the flame temperature near the surface of the burning sample is increased.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF01914128

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The influence of aluminium oxide trihydrate particle size on the combustion of polydimethylsiloxane (1989)

Zdorikova, G. A. ; Kolesnikov, A. A. ; Troitskaya, T. A. ; [et al.]

New York, NY [u.a.] : Wiley-Blackwell

Fire and Materials 14 (1989), S. 125-131

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ISSN: 0308-0501

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Architecture, Civil Engineering, Surveying , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics

Notes: The regularities of thermal degradation of Al(OH)3 powders and the compositions of polydimethylsiloxane and fire retardant with different particle sizes (from 2 μm to 45 μm) were studied by the use of dynamic thermogravimetry (TG), mass spectrometry (MS) and high-temperature pyrolysis. It was shown that the size of the flame-retardant particles influences the physico-mechanical characteristics and combustion of polymeric compositions based on polydimethylsiloxane. The filling of polymer with fine flame retardants improves the tensile properties of vulcanizates but the flame retardance is reduced markedly. The time of free combustion and the length of the burnt parts are increased, the oxygen index and time of ignition delay are decreased while the flame temperature near the surface of the burning sample rises.

Additional Material: 14 Ill.