Structure, Mechanical, Thermal and Fire Behavior Assessments of Environmentally Friendly Crude Glycerol-Based Rigid Polyisocyanurate Foams

Hejna, Aleksander; Kosmela, Paulina; Kirpļuks, Miķelis; Cābulis, Uģis; Klein, Marek; Haponiuk, Józef T.; Piszczyk, Łukasz

doi:10.1007/s10924-017-1086-2

Cited by 39 publications

(45 citation statements)

References 62 publications

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“…With the increase of apparent density, It could be seen that the incorporation of biopolyol into the foams' formulation resulted in the reduction of the average cell size, which was followed by a drop of the thermal conductivity coefficient. A similar effect was observed in our other works [24,25]. Changes of the isocyanate index did not result in significant differences in the thermal conductivity of prepared foams.…”

Section: Microstructure Of Rigid Pur-pir Foamssupporting

confidence: 90%

“…The impact of the isocyanate index (I ISO ) on the processing of polyurethane systems and the performance of the resulting PUR-PIR foams was investigated. Three values of I ISO were applied, basing on literature reports and our previous works: 200, 250, and 300 [24,25]. Component A consisted of the proper amounts of Rokopol®RF551 and biopolyol LB, catalysts, surfactant, flame retardant, and blowing agent.…”

Section: Preparation Of Rigid Pur-pir Foamsmentioning

confidence: 99%

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Study on the Structure-Property Dependences of Rigid PUR-PIR Foams Obtained from Marine Biomass-Based Biopolyol

et al. 2020

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The paper describes the preparation and characterization of rigid polyurethane-polyisocyanurate (PUR-PIR) foams obtained with biopolyol synthesized in the process of liquefaction of biomass from the Baltic Sea. The obtained foams differed in the content of biopolyol in polyol mixture (0–30 wt%) and the isocyanate index (IISO = 200, 250, and 300). The prepared foams were characterized in terms of processing parameters (processing times, synthesis temperature), physical (sol fraction content, apparent density) and chemical structure (Fourier transform infrared spectroscopy), microstructure (computer microtomography), as well as mechanical (compressive strength, dynamic mechanical analysis), and thermal properties (thermogravimetric analysis, thermal conductivity coefficient). The influence of biopolyol and IISO content on the above properties was determined. The addition of up to 30 wt% of biopolyol increased the reactivity of the polyol mixture, and the obtained foams showed enhanced mechanical, thermal, and insulating properties compared to foams prepared solely with petrochemical polyol. The addition of up to 30 wt% of biopolyol did not significantly affect the chemical structure and average cell size. With the increase in IISO, a slight decrease in processing times and mechanical properties was observed. As expected, foams with higher IISO exhibited a higher relative concentration of polyisocyanurate groups in their chemical structure, which was confirmed using principal component analysis (PCA).

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Section: Microstructure Of Rigid Pur-pir Foamssupporting

confidence: 90%

Section: Preparation Of Rigid Pur-pir Foamsmentioning

confidence: 99%

Study on the Structure-Property Dependences of Rigid PUR-PIR Foams Obtained from Marine Biomass-Based Biopolyol

et al. 2020

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“…The main problem associated with the PU industry is the dependence of isocyanates and polyols on petrochemical products. Legislative requirements connected with environmental protection lead the chemical industry towards the development of new green composite materials [3][4][5]. One of the solutions that meet these regulations is the introduction of polyols derived from natural sources, such as vegetable oils [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Bio-Based Polyurethane Composite Foams with Improved Mechanical, Thermal, and Antibacterial Properties

et al. 2020

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Among different organic fillers, the chemical composition of Syzygium aromaticum, commonly known as cloves, has great potential as a sustainable reinforcement for polymeric materials. In the study, grounded cloves were used as cellulosic filler for a novel polyurethane (PU) composite foams. Soybean oil-based PU composite foams were successfully reinforced with different concentrations (1, 2, and 5 wt%) of clove filler. PU foams were examined by rheological behavior, processing parameters, cellular structure (scanning electron microscopy analysis), mechanical properties (compression test, impact test, three-point bending test), thermal properties (thermogravimetric analysis), viscoelastic behavior (dynamic mechanical analysis) as well as selected application properties (apparent density, dimensional stability, surface hydrophobicity, water absorption, color characteristic). In order to undertake the disc diffusion method, all PU composites were tested against selected bacteria (Escherichia coli and Staphylococcus aureus). Based on the results, it can be concluded that the addition of 1 and 2 wt% of clove filler leads to PU composite foams with improved compression strength (improvement by ≈18% for sample PU-1), greater flexural strength (increase of ≈11%), and improved impact strength (increase of ≈8%). Moreover, it has been proved that clove filler may be used as a natural anti-aging compound for polymeric materials. Based on the antibacterial results, it has been shown that the addition of clove filler significantly improved the antibacterial properties of PU foams and is suitable for the manufacturing of antimicrobial PU composite foams. Due to these positive and beneficial effects, it can be stated that the use of cloves as a natural filler in PU composite foams can promote a new application path in converting agricultural waste into useful resources for creating a new class of green materials.

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“…Oil was modified via transesterification with glycerol. Hejna et al [66,67] in their research works applied crude glycerol and castor oil-based polyol, which preparation was described in other paper [55] in manufacturing of polyurethane-polyisocyanurate foams, which could be used as thermal insulation materials. observed by Ionescu et al [68] who also applied castor oil-based polyols in preparation of rigid PUR foams.…”

Section: Incorporation Of Vegetable Oil-based Polyols Into Manufacturmentioning

confidence: 99%

Application of vegetable oil-based biopolyols in manufacturing of rigid polyurethane foams – short review

Hejna¹

2018

J. Polym. Sci. Eng.

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The development of polyurethane foams’ market, as well as ongoing trends associated with sustainable development cause increasingly growing interest in the utilization of materials from renewable resources. Great example of such phenomenon is the use of vegetable oils in manufacturing of foamed polyurethanes. These materials can be applied directly or after previous modifications in production of biopolyols, main constituents of polyurethanes. In this paper, analysis of polyurethane foams’ market was presented and forecasts pointing to the potentially increasing position of so-called bio-polyurethanes in the future. Moreover, this paper summarizes previously published reports related to the manufacturing of vegetable oil-based biopolyols and their further incorporation into formulations of rigid polyurethane foams.

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Structure, Mechanical, Thermal and Fire Behavior Assessments of Environmentally Friendly Crude Glycerol-Based Rigid Polyisocyanurate Foams

Cited by 39 publications

References 62 publications

Study on the Structure-Property Dependences of Rigid PUR-PIR Foams Obtained from Marine Biomass-Based Biopolyol

Study on the Structure-Property Dependences of Rigid PUR-PIR Foams Obtained from Marine Biomass-Based Biopolyol

Bio-Based Polyurethane Composite Foams with Improved Mechanical, Thermal, and Antibacterial Properties

Application of vegetable oil-based biopolyols in manufacturing of rigid polyurethane foams – short review

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