Plastics. Smoke generation

Samples of m-PPO (virgin and flame retarded) and high impact polystyrene blended with zinc and zinc borate (2ZnO·3B2O3·3.5H 2O), were pre pared. The effect of triaryl phosphate on the flame retardancy of PPO-HIPS in conjunction with zinc and zinc borate was studied. For polystyrene zinc borate shows some reduction in smoke generation. Zinc, however does not show any effect on smoke generation for high impact polystyrene. Triphenyl phosphate shows minimal flame retardancy in HIPS which is not enhanced by zinc. Addition of zinc gives an increase in oxygen index for FR m-PPO, whereas zinc borate decreases the OI values. Zinc borate may sequester triaryl phos phate and thus eliminate its vapor phase activity. Zinc borate shows a signifi cant reduction in smoke generation and rate of heat release for m-PPO.

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Comparison of Optical Smoke Density of Expanded Polystyrene without and with Cover Components Used in ETICS

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.724-725.1625 ◽

2013 ◽

Vol 724-725 ◽

pp. 1625-1629

Author(s):

Peter Rantuch ◽

Tomáš Chrebet ◽

Karol Balog

Keyword(s):

Thermal Radiation ◽

Optical Density ◽

Glass Fibre ◽

Expanded Polystyrene ◽

Composite Systems ◽

Testing Method ◽

Potential Source ◽

Smoke Generation ◽

Pilot Burner

This paper deals with expanded polystyrene (EPS) as a potential source of smoke. We compared specific optical density of smoke from EPS and EPS strengthened by glass fibre mash and plaster which is used in external thermal insulation composite systems (ETICS). There was used testing method by ISO 5659 Plastics Smoke generation Part 2: Determination of optical density by a single-chamber test. The samples were exposed to a constant 50 kW.m-2 of thermal radiation. There was not used a pilot burner. During flame combustion samples evolved high amount of smoke. Samples from EPS released more smoke like samples with ETICS cover.

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Impact of coolant temperature on piston wall-wetting and smoke generation in a stratified-charge DISI engine operated on E30 fuel

Proceedings of the Combustion Institute ◽

10.1016/j.proci.2018.07.073 ◽

2019 ◽

Vol 37 (4) ◽

pp. 4955-4963 ◽

Cited By ~ 22

Author(s):

Xu He ◽

Yankai Li ◽

Magnus Sjöberg ◽

David Vuilleumier ◽

Carl-Philipp Ding ◽

...

Keyword(s):

Coolant Temperature ◽

Stratified Charge ◽

Smoke Generation ◽

Wall Wetting

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Study On Combustibility of Urethane-Modified Polyisocyanurate Foam

Journal of Fire Sciences ◽

10.1177/073490418300100504 ◽

1983 ◽

Vol 1 (5) ◽

pp. 348-363 ◽

Cited By ~ 3

Author(s):

Yoshio Imai ◽

Takao Inukai ◽

Masato Tamashima

Keyword(s):

Molecular Weight ◽

Polyurethane Foams ◽

Lower Molecular Weight ◽

Combustion Behavior ◽

Smoke Generation ◽

Rigid Poly ◽

Almost All

The relation between components of urethane-modified polyisocyanurate foams and their combustion behavior was observed to compare with rigid poly urethane foams, using the specially designed burning test apparatuses. Accord ing to the vertical smoke-weight determination for chipped samples, almost all foams lost their weight at about 650 °C. The amount of generated smoke became maximum at about 500 °C for polyurethane foams and at about 600 °C for polyisocyanurate foams. According to the horizontal smoke-concentration deter mination for small plate samples, fires occurred with much amount of generated smoke at about 600 °C. Through both the testings, adoption of higher functional isocyanate, secondary polyol, lower molecular weight polyol, or amine catalyst brought much smoke generation. Polyisocyanurate foams showed little smoke as compared with polyurethane foams.

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