Effect of cellulose whisker and ammonium polyphosphate on thermal properties and flammability performance of rigid polyurethane foam

2015 ◽  
Vol 122 (2) ◽  
pp. 717-723 ◽  
Author(s):  
Fubin Luo ◽  
Kun Wu ◽  
Huilong Guo ◽  
Qiang Zhao ◽  
Liyan Liang ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Polyurethane Foam ◽  
Ammonium Polyphosphate ◽  
Rigid Polyurethane Foam ◽  
Cellulose Whisker

Flame retarded rigid polyurethane foam composites based on gel-silica microencapsulated ammonium polyphosphate

2021 ◽  
Vol 98 (1) ◽  
pp. 212-223 ◽  
Author(s):  
Yadong Yang ◽  
Wen Chen ◽  
Mengru Liu ◽  
Qingming Zhu ◽  
Xinliang Liu ◽  
...  
Keyword(s):  
Polyurethane Foam ◽  
Ammonium Polyphosphate ◽  
Rigid Polyurethane Foam ◽  
Flame Retarded ◽  
Microencapsulated Ammonium Polyphosphate

scholarly journals Bio-based rigid polyurethane foam prepared from apricot stone shell-based polyol for thermal insulation application – Part 2: Morphological, mechanical, and thermal properties

BioResources ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. 6080-6094
Author(s):  
Muhammed Said Fidan ◽  
Murat Ertaş
Keyword(s):  
Thermal Conductivity ◽  
Compressive Strength ◽  
Thermal Properties ◽  
Thermogravimetric Analysis ◽  
Polyurethane Foam ◽  
Flame Retardants ◽  
Compressive Modulus ◽  
Cell Diameter ◽  
Mechanical And Thermal Properties ◽  
Rigid Polyurethane Foam

The procedure for the liquefaction of apricot stone shells was reported in Part 1. Part 2 of this work determines the morphological, mechanical, and thermal properties of the bio-based rigid polyurethane foam composites (RPUFc). In this study, the thermal conductivity, compressive strength, compressive modulus, thermogravimetric analysis, flammability tests (horizontal burning and limited oxygen index (LOI)) in the flame retardants), and scanning electron microscope (SEM) (cell diameter in the SEM) tests of the RPUFc were performed and compared with control samples. The results showed the thermal conductivity (0.0342 to 0.0362 mW/mK), compressive strength (10.5 to 14.9 kPa), compressive modulus (179.9 to 180.3 kPa), decomposition and residue in the thermogravimetric analysis (230 to 491 °C, 15.31 to 21.61%), UL-94 and LOI in the flame retardants (539.5 to 591.1 mm/min, 17.8 to 18.5%), and cell diameter in the SEM (50.6 to 347.5 μm) of RPUFc attained from liquefied biomass. The results were similar to those of foams obtained from industrial RPUFs, and demonstrated that bio-based RPUFc obtained from liquefied apricot stone shells could be used as a reinforcement filler in the preparation of RPUFs, specifically in construction and insulation materials. Moreover, liquefied apricot stone shell products have potential to be fabricated into rigid polyurethane foam composites.

scholarly journals Density Effect on Flame Retardancy, Thermal Degradation, and Combustibility of Rigid Polyurethane Foam Modified by Expandable Graphite or Ammonium Polyphosphate

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 668 ◽  
Author(s):  
Yang ◽  
Liu ◽  
Jiang ◽  
Chen ◽  
Wan
Keyword(s):  
Weight Loss ◽  
Thermal Degradation ◽  
Heat Release ◽  
Polyurethane Foam ◽  
Apparent Density ◽  
Flame Retardancy ◽  
Ammonium Polyphosphate ◽  
Expandable Graphite ◽  
Rigid Polyurethane Foam ◽  
Combustion Behaviors

The current study aims at comparatively investigating the effect of apparent density on flame retardancy, thermal degradation and combustion behaviors of rigid polyurethane foam (RPUF), RPUF/ expandable graphite (EG) and RPUF/ ammonium polyphosphate (APP). A series of RPUF, RPUF/EG and RPUF/APP samples with different apparent densities (30, 60 and 90 kg/m3) were prepared. The flame retardancy, thermal degradation, and combustion behaviors of each sample were investigated. Limiting oxygen index (LOI) results indicated that increasing apparent density was beneficial to the flame retardancy of all foam systems. The effect of apparent density on the enhancement of flame retardancy followed the sequence of RPUF < RPUF/APP < RPUF/EG. Thermogravimetric analysis (TGA) results showed that an increase in the apparent density can cause more weight loss in the first degradation stage and less weight loss in the second degradation stage for all foam systems. The combustion behaviors also showed significant differences. The samples with a higher apparent density showed a longer duration of heat release and higher total heat release (THR). The findings in this study demonstrated that apparent density played an important role in flame retardancy, thermal degradation, and combustion behaviors of RPUF, which must be paid more attention in the studies of flame-retardant RPUF.

Effect of aluminum diethylphosphinate on flame retardant and thermal properties of rigid polyurethane foam composites

2019 ◽  
Vol 140 (2) ◽  
pp. 625-636 ◽  
Author(s):  
Gang Tang ◽  
Lin Zhou ◽  
Ping Zhang ◽  
Zhongqiang Han ◽  
Depeng Chen ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Flame Retardant ◽  
Polyurethane Foam ◽  
Rigid Polyurethane Foam

Effects of ammonium polyphosphate microencapsulated on flame retardant and mechanical properties of the rigid polyurethane foam

2020 ◽  
Vol 137 (48) ◽  
pp. 49591
Author(s):  
Jiaji Cheng ◽  
Shaoshuai Niu ◽  
Dan Ma ◽  
Yue Zhou ◽  
Feng Zhang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Flame Retardant ◽  
Polyurethane Foam ◽  
Ammonium Polyphosphate ◽  
Rigid Polyurethane Foam

Enhanced thermal stability and flame retardancy of polyurethane foam composites with polybenzoxazine modified ammonium polyphosphates

RSC Advances ◽  
2016 ◽  
Vol 6 (16) ◽  
pp. 13418-13425 ◽  
Author(s):  
Fubin Luo ◽  
Kun Wu ◽  
Mangeng Lu
Keyword(s):  
Thermal Stability ◽  
Thermal Behavior ◽  
Polyurethane Foam ◽  
Flame Retardancy ◽  
Ammonium Polyphosphate ◽  
Rigid Polyurethane Foam

The influence of polybenzoxazine modified ammonium polyphosphate (BMAPP) on the thermal behavior and flame retardancy of a rigid polyurethane foam (PU) are investigated using various techniques.

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