Polyol Containing Boron Atoms as a Compound which Reduces Flammability of Rigid Polyurethane‐Polyisocyanurate Foams

Paciorek‐Sadowska, Joanna

doi:10.5772/intechopen.69585

Cited by 3 publications

(3 citation statements)

References 18 publications

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“…The flame-retardant compound was decomposed to simpler compounds that were involved in oxidation reaction by free radicals under the influence of heating. Then, there was a decrease in the concentration of active free radicals, which slowed down the combustion process [59,60,61,62]. The reason for the reduction of flammability of obtained RPU/PIR foams was the synergism of sulfur contained in the bio-polyol with chlorine and phosphorus contained in flame retardant (Antiblaze TCMP).…”

Section: Resultsmentioning

confidence: 99%

Biodegradable, Flame-Retardant, and Bio-Based Rigid Polyurethane/Polyisocyanurate Foams for Thermal Insulation Application

et al. 2019

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This article raised the issue of studies on the use of new bio-polyol based on white mustard seed oil and 2,2’-thiodiethanol (3-thiapentane-1,5-diol) for the synthesis of rigid polyurethane/polyisocyanurate (RPU/PIR) foams. For this purpose, new formulations of polyurethane materials were prepared. Formulations contained bio-polyol content from 0 to 0.4 chemical equivalents of hydroxyl groups. An industrial flame retardant, tri(2-chloro-1-methylethyl) phosphate (Antiblaze TCMP), was added to half of the formulations. Basic foaming process parameters and functional properties, such as apparent density, compressive strength, brittleness, absorbability and water absorption, aging resistance, thermal conductivity coefficient λ, structure of materials, and flammability were examined. The susceptibility of the foams to biodegradation in soil was also examined. The increase in the bio-polyol content caused a slight increase in processing times. Also, it was noted that the use of bio-polyol had a positive effect on the functional properties of obtained RPU/PIR foams. Foams modified by bio-polyol based on mustard seed oil showed lower apparent density, brittleness, compressive strength, and absorbability and water absorption, as well as thermal conductivity, compared to the reference (unmodified) foams. Furthermore, the obtained materials were more resistant to aging and more susceptible to biodegradation.

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Section: Resultsmentioning

confidence: 99%

Biodegradable, Flame-Retardant, and Bio-Based Rigid Polyurethane/Polyisocyanurate Foams for Thermal Insulation Application

et al. 2019

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“…Strict flammability requirements are imposed on foam materials for building applications. Obtaining low- or non-flammable materials requires multidirectional solutions both at the step of chemical structure design and use of flame-retardant additives [61,62,63,64,65,66,67]. PU foams based on petrochemical polyols are flammable and can be an additional source of fuel in case of a fire disaster.…”

Section: Resultsmentioning

confidence: 99%

The Use of Waste from the Production of Rapeseed Oil for Obtaining of New Polyurethane Composites

et al. 2019

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This article presents the results of research on obtaining new polyurethane materials modified by a by-product from vegetable oils industry—rapeseed cake. The chemical composition of rapeseed cake was examined. Rigid polyurethane-polyisocyanurate (RPU/PIR) foams containing a milled rapeseed cake in their composition were obtained as part of the conducted research. Biofiller was added in amount of 30 wt.% up to 60 wt.%. Effects of rapeseed cake on the foaming process, cell structure and selected properties of foams, such as apparent density, compressive strength, brittleness, flammability, absorbability, water absorption, thermal resistance and thermal conductivity are described. The foaming process of RPU/PIR foams modified by rapeseed cake was characterized by a lower reactivity, lower foaming temperature and decrease in dielectric polarization. This resulted in a slowed formation of the polyurethane matrix. Apparent density of RPU/PIR foams with biofiller was higher than in unmodified foam. Addition of rapeseed cake did not have a significant influence on the thermal conductivity of obtained materials. However, we observed a tendency for opening the cells of modified foams and obtaining a smaller cross-sectional area of cells. This led to an increase of absorbability and water absorption of obtained materials. However, an advantageous effect of using rapeseed cake in polyurethane formulations was noted. Modified RPU/PIR foams had higher compressive strength, lower brittleness and lower flammability than reference foam.

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“…The use of flame retardant compounds allows to significantly change the fire performance of polyurethane materials, making them safer during exploitation [ 55 ]. A modern approach to the problem of flammability of polyurethane plastics consists in cessation of the use of flame retardants based on halogen compounds (bromine, chlorine) or aluminum and magnesium hydroxides for those whose chemical composition will allow to create a barrier that cuts off the oxygen supply from the fire source during a fire [ 56 , 57 ]. Such a mechanism is demonstrated by silicon compounds that are able to create a silicate glass barrier on the surface of the burning polymer.…”

Section: Resultsmentioning

confidence: 99%

Use of a Mixture of Polyols Based on Metasilicic Acid and Recycled PLA for Synthesis of Rigid Polyurethane Foams Susceptible to Biodegradation

Paciorek‐Sadowska

Borowicz

Chmiel

et al. 2020

IJMS

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Two polyol raw materials were obtained in the conducted research, one based on metasilicic acid (MSA), the other based on poly(lactic acid) (PLA) waste. The obtained polyols were characterized in terms of their applicability for the production of rigid polyurethane foams (RPUFs). Their basic analytical properties (hydroxyl number, acid number, elemental analysis) and physicochemical properties (density, viscosity) were determined. The assumed chemical structure of the obtained new compounds was confirmed by performing FTIR and 1H NMR spectroscopic tests. Formulations for the synthesis of RPUFs were developed on the basis of the obtained research results. A mixture of polyols based on MSA and PLA in a weight ratio of 1:1 was used as the polyol component in the polyurethane formulation. The reference foam in these tests was a foam that was synthesized only on the basis of MSA-polyol. The obtained RPUFs were tested for basic functional properties (apparent density, compressive strength, water absorption, thermal conductivity coefficient etc.). Susceptibility to biodegradation in soil environment was also tested. It was found that the use of mixture of polyols based on MSA and PLA positively affected the properties of the obtained foam. The polyurethane foam based on this polyol mixture showed good thermal resistance and significantly reduced flammability in comparison with the foam based MSA-polyol. Moreover, it showed higher compressive strength, lower thermal conductivity and biodegradability in soil. The results of the conducted tests confirmed that the new foam was characterized by very good performance properties. In addition, this research provides information on new waste management opportunities and fits into the doctrine of sustainable resource management offered by the circular economy.

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Polyol Containing Boron Atoms as a Compound which Reduces Flammability of Rigid Polyurethane‐Polyisocyanurate Foams

Cited by 3 publications

References 18 publications

Biodegradable, Flame-Retardant, and Bio-Based Rigid Polyurethane/Polyisocyanurate Foams for Thermal Insulation Application

Biodegradable, Flame-Retardant, and Bio-Based Rigid Polyurethane/Polyisocyanurate Foams for Thermal Insulation Application

The Use of Waste from the Production of Rapeseed Oil for Obtaining of New Polyurethane Composites

Use of a Mixture of Polyols Based on Metasilicic Acid and Recycled PLA for Synthesis of Rigid Polyurethane Foams Susceptible to Biodegradation

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