scholarly journals Pyrolysis Combustion Flow Calorimetry Studies on Some Reactively Modified Polymers

Polymers ◽  
2015 ◽  
Vol 7 (3) ◽  
pp. 453-467 ◽  
Author(s):  
Svetlana Tretsiakova-McNally ◽  
Paul Joseph
Keyword(s):  
Flow Calorimetry ◽  
Modified Polymers ◽  
Combustion Flow

Pyrolysis combustion flow calorimetry

2004 ◽  
Vol 71 (1) ◽  
pp. 27-46 ◽  
Author(s):  
Richard E Lyon ◽  
Richard N Walters
Keyword(s):  
Flow Calorimetry ◽  
Combustion Flow

scholarly journals Exploring the Contribution of Two Phosphorus-Based Groups to Polymer Flammability via Pyrolysis–Combustion Flow Calorimetry

Materials ◽  
2019 ◽  
Vol 12 (18) ◽  
pp. 2961 ◽  
Author(s):  
Rodolphe Sonnier ◽  
Belkacem Otazaghine ◽  
Christelle Vagner ◽  
Frédéric Bier ◽  
Jean-Luc Six ◽  
...  
Keyword(s):  
Heat Release ◽  
Cooperative Interaction ◽  
Flow Calorimetry ◽  
Complete Combustion ◽  
Release Capacity ◽  
Phosphorus Containing ◽  
Combustion Flow ◽  
Heat Release Capacity ◽  
Polymer Flammability ◽  
Good Agreement

From a set of around 100 phosphorus-containing polymers tested in pyrolysis–combustion flow calorimetry, the contributions to flammability of two phosphorus-containing pendant groups (called 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO) and PO3) were calculated using an advanced method previously proposed and validated. The flammability properties include total heat release (THR) and heat release capacity (HRC) measured in standard conditions, i.e., anaerobic pyrolysis and complete combustion. The calculated contributions are in good agreement with the main modes of action of both phosphorus groups, i.e., flame inhibition for DOPO and char promotion for PO3. Moreover, the results provide first conclusions about the cooperative interaction between phosphorus and nitrogen, as well as the influence of the architecture of tested co-polymers.

scholarly journals Studying the thermo-oxidative stability of chars using pyrolysis-combustion flow calorimetry

2016 ◽  
Vol 134 ◽  
pp. 340-348 ◽  
Author(s):  
Rodolphe Sonnier ◽  
Amandine Viretto ◽  
Belkacem Otazaghine ◽  
Loïc Dumazert ◽  
Alexei Evstratov ◽  
...  
Keyword(s):  
Oxidative Stability ◽  
Flow Calorimetry ◽  
Combustion Flow

scholarly journals Flax/PP and Flax/PLA Thermoplastic Composites: Influence of Fire Retardants on the Individual Components

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2452
Author(s):  
Baljinder K. Kandola ◽  
Wiwat Pornwannachai ◽  
John Russell Ebdon
Keyword(s):  
Mechanical Properties ◽  
Fire Retardant ◽  
Thermoplastic Composites ◽  
Fire Retardants ◽  
Flow Calorimetry ◽  
Pp Composites ◽  
Combustion Flow ◽  
Decomposition Pathway ◽  
Fire Properties ◽  
The Individual

This study is based on previously reported reaction to fire properties of flax fibre-reinforced polymeric (polypropylene, PP and polylactic acid, PLA) composites, prepared by pre-treating the fabrics with different fire retardants (FRs) prior to composite preparation. It was observed that while all of these treatments were very effective in flax/PLA in terms of achieving a V-0 rating in a UL-94 test, only an organophosphonate FR was capable of achieving a V-0 rating for flax/PP. However, all fire-retardant treatments impaired the mechanical properties of the composites; the reduction was more in flax/PLA compared to flax/PP composites. To understand these effects further, here thermal analysis and pyrolysis combustion flow calorimetry of the composites and each component separately treated with FRs have been conducted and the results analysed in terms of the effect on each component so as to observe any interaction between the different components. The results indicated that in flax/PLA composites, the water released during FR catalysed dehydration-decomposition of flax may hydrolyse PLA, changing decomposition pathway of PLA to produce less flammable volatile, hence resulting in reduced flammability.

scholarly journals Correction to: Temperature self-regulating flat electric heaters based on MWCNTs-modified polymers

2021 ◽  
Author(s):  
Imran Ali ◽  
Tahani Saad AlGarni ◽  
Alexandr Shchegolkov ◽  
Aleksei Shchegolkov ◽  
Sung-Hwan Jang ◽  
...  
Keyword(s):  
Modified Polymers

Large-Eddy Simulation of Combustion Oscillation in Premixed Combustor

1999 ◽  
Author(s):  
Tomoya Murota ◽  
Masaya Ohtsuka
Keyword(s):  
Large Eddy Simulation ◽  
Present Method ◽  
Premixed Combustion ◽  
Compressible Turbulence ◽  
Flamelet Model ◽  
Turbulent Premixed Flame ◽  
Eddy Simulation ◽  
Large Eddy ◽  
Combustion Oscillation ◽  
Combustion Flow

To analyze combustion oscillation in the premixed combustor, a large-eddy simulation program for premixed combustion flow was developed. The subgrid scale (SGS) model of eddy viscosity type for compressible turbulence (Speziale et al., 1988) was adopted to treat the SGS fluxes. The fractal flamelet model, which utilizes the fractal properties of the turbulent premixed flame to obtain the reaction rate, was developed. Premixed combustion without oscillation was analyzed to verify the present method. The computational results showed good accordance with experimental data (Rydén et al., 1993). The combustion oscillation of an “established buzz” type in the premixed combustor (Langhorne, 1988) was also analyzed. The present method succeeded in capturing the oscillation accurately. The detailed mechanism was investigated. The appearance of the non-heat release region, which is generated because the supply of the unburnt gas into the combustion zone stagnates, and its disappearance play an important role.

Ion-beam modified polymers for biomedical applications

2007 ◽  
Vol 261 (1-2) ◽  
pp. 690-693 ◽  
Author(s):  
J. Jagielski ◽  
A. Turos ◽  
D. Bielinski ◽  
A.M. Abdul-Kader ◽  
A. Piatkowska
Keyword(s):  
Biomedical Applications ◽  
Ion Beam ◽  
Modified Polymers
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