Flammability of vulcanizates of diene rubbers

Janowska

et al. 2014

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This paper presents thermal properties of organic pigments such as zinc phthalocyanine and chloroaluminum phthalocyanine that were synthesized according to the literature data. These pigments were characterized by means of elementary analysis and measurements of particle size. They were then incorporated into butadiene-styrene rubber and butadiene-acrylonitrile rubber. The elastomeric mixtures were cross-linked by two methods: using organic peroxide or sulfur. The effect of phthalocyanines on the thermal properties, flammability, and fire hazard of the pigmented polymeric materials obtained as well as on their mechanical properties and cross-linking degree was studied. It has been shown that the phthalocyanine pigments not only impart appropriate esthetic values to the final goods but also increase their thermal stability and considerably reduce the flammability and fire hazard of elastomers and even make possible materials that are self-extinguishing under air atmosphere. These pigments also have a beneficial influence on the degree of cross-linking of the elastomers investigated and their mechanical properties.

Section: Resultsmentioning

confidence: 85%

Section: Resultsmentioning

confidence: 99%

The thermal properties and the flammability of pigmented elastomeric materials

Pająk

Janowska

et al. 2014

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“…Moreover, during thermal decomposition and combustion of organic polymers, considerable amounts of fumes and toxic gases are emitted, creating a serious hazard to the health and life of men present in their atmosphere [1,2].…”

Section: Introductionmentioning

confidence: 99%

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

Żukowski

Bradło

2016

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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.

“…At a constant nitrogen flow rate in a measurement column (D = 75 mm) amounting to 40 ± 2 mm 9 s -1 , the concentration of oxygen was selected so that the sample could be completely burned within 180 s. The sample tip was ignited for 5 s by means of a gas burner supplied with propane-butane mixture. The value of OI was calculated from the following formula [20,21]:…”

Section: Methodsmentioning

confidence: 99%

Thermal stability and flammability of butadiene–styrene rubber nanocomposites

Janowska

Jóźwiak

et al. 2012

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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.