<abstract xmlns="http://www.w3.org/1999/xhtml">

Polymeric materials, which are currently very often used in various industries, are often transported and stored in the form of granules before processing. This method has several advantages, but in most studies the test samples are modified to different shapes and dimensions. This paper is therefore focused on the initiation of selected granular plastics. Samples of five polymeric materials were exposed to an external heat flux from 20 kW.m−2 to 40 kW.m−2. A spark initiator was used to ignite the released gaseous products of thermal decomposition of the polymer sample. FTP (flow-time product) method was applied to the obtained parameter - time to ignition, from which other initiation parameters were determined. The critical heat flux was determined in the range of 5.0 kW.m−2 - 11.8 kW.m−2. Despite the relatively small thickness (4 mm), the samples behaved as thermally thick. During the measurement, thin surface layer melted, and the rest of the polymer remained in its original granulated form. Ignition temperatures were calculated according to the Stefan-Boltzmann’s law between 273 °C - 402 °C.
</abstract>

Polymeric materials, which are currently very often used in various industries, are often transported and stored in the form of granules before processing. This method has several advantages, but in most studies the test samples are modified to different shapes and dimensions. This paper is therefore focused on the initiation of selected granular plastics. Samples of five polymeric materials were exposed to an external heat flux from 20 kW.m−2 to 40 kW.m−2. A spark initiator was used to ignite the released gaseous products of thermal decomposition of the polymer sample. FTP (flow-time product) method was applied to the obtained parameter - time to ignition, from which other initiation parameters were determined. The critical heat flux was determined in the range of 5.0 kW.m−2 - 11.8 kW.m−2. Despite the relatively small thickness (4 mm), the samples behaved as thermally thick. During the measurement, thin surface layer melted, and the rest of the polymer remained in its original granulated form. Ignition temperatures were calculated according to the Stefan-Boltzmann’s law between 273 °C - 402 °C.

Initiation Parameters of Granulated Synthetic Polymers

Slovak university of technology in bratislava, faculty of materials science and technology in trnava

Research Papers Faculty of Materials Science and Technology Slovak University of Technology

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"Initiation Parameters of Granulated Synthetic Polymers"}

Polymeric materials, which are currently very often used in various industries, are often transported and stored in the form of granules before processing....

Initiation Parameters of Granulated Synthetic Polymers

Data publikacji: 05 sie 2021

Zakres stron: 114 - 122

Otrzymano: 28 kwi 2021

Przyjęty: 26 maj 2021

DOI: https://doi.org/10.2478/rput-2021-0012

Słowa kluczowe
Critical heat flux, flow-time product, initiation, initiation temperature

© 2021 Peter Rantuch et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Initiation Parameters of Granulated Synthetic Polymers

Data publikacji: 05 sie 2021

Zakres stron: 114 - 122

Otrzymano: 28 kwi 2021

Przyjęty: 26 maj 2021

DOI: https://doi.org/10.2478/rput-2021-0012

Słowa kluczoweCritical heat flux, flow-time product, initiation, initiation temperature

© 2021 Peter Rantuch et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Słowa kluczowe
Critical heat flux, flow-time product, initiation, initiation temperature