Oligoetherols and polyurethane foams obtained from melamine diborate

Chmiel, Ewelina; Lubczak, Jacek

doi:10.1007/s10965-017-1252-1

Cited by 6 publications

(6 citation statements)

References 9 publications

(11 reference statements)

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“…About 66.6 g of H 2 SiO 3 :GL:EC = 1:4:3 oligoetherol and 133.4 g of oligoetherol obtained from MDB:EC = 1:20 were placed in 500-cm 3 round-bottomed flask equipped with reflux condenser, mechanical stirrer and thermometer. Obtained oligoetherols have high viscosity (oligoetherol H 2 SiO 3 :GL:EC = 1:4:3 33442 mPa s, 23 oligoetherol MDB:EC = 1:20–6200 mPa s 11 ). Therefore, it was necessary to mix them at elevated temperatures in order to obtain homogeneous mixture.…”

Section: Methodsmentioning

confidence: 95%

“…Another attempt to obtain reactive flammability retardant for PUFs of reduced flammability and increased thermal resistance using melamine diborate (MDB) and EC was also described. 11 MDB was readily obtained by the reaction of MEL with boric acid in hot water. The product of the stoichiometry 1:2 MEL:H 3 BO 3 precipitated upon cooling the reaction mixture.…”

Section: Introductionmentioning

confidence: 99%

“…The PUF obtained from foaming composition containing 4% water component is self-extinguishing. Encouraged by outstanding properties of PUFs obtained from silicon-containing oligoetherol 23 and from boron-containing oligoetherol with 1,3,5-triazine ring 11 obtained from MDB and EC, we attempted here to obtain product with both high thermal resistance and good mechanical properties with additional low flammability. In order to achieve these three goals, we have used both described oligoetherols in the mixture of variable percentage and monitored the properties of PUFs obtained thereof and compared them with PUFs synthesized from MDB and PC as well as from silicic acid, GL and EC as described in Chmiel and Lubczak.…”

Section: Introductionmentioning

confidence: 99%

“…In order to achieve these three goals, we have used both described oligoetherols in the mixture of variable percentage and monitored the properties of PUFs obtained thereof and compared them with PUFs synthesized from MDB and PC as well as from silicic acid, GL and EC as described in Chmiel and Lubczak. 11,23 We also monitored the changes of the obtained PUFs after exploitation at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Polyurethane foams with 1,3,5-triazine ring, boron and silicon

Chmiel

Lubczak

2019

Journal of Cellular Plastics

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The method of obtaining polyurethane foams with 1,3,5-triazine ring and silicon and boron atoms, based on two oligoetherols, the one, synthesized from melamine diborate and propylene carbonate and the second, obtained from metasilicic acid, glycidol and ethylene carbonate, was elaborated. The physical properties of polyurethane foams were tested depending on composition of oligoetherol substrates mixture used. Obtained polyurethane foams have high compression strength and enhanced thermal resistance in comparison to classic rigid polyurethane foams. Long-term thermal exposure at 150–175°C results in increase of compression strength and reducing in flammability. The polyurethane foams exposed per month at 150°C show increase of oxygen index within 24.4–27.6, i.e. they are self-extinguishing. When polyurethane foams are exposed at 175°C, the oxygen index rise into 46.5–48.0, and the materials become non-flammable.

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Section: Methodsmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Polyurethane foams with 1,3,5-triazine ring, boron and silicon

Chmiel

Lubczak

2019

Journal of Cellular Plastics

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“…Quite common reactive flame retardants for polyurethane foams are organic esters of boric acid, which are polyol components in the synthesis of foams [ 26 , 27 , 28 , 29 ]. The use of oligo- and polyetherols with boron atoms and heterocyclic rings, e.g., perhydro-1,3,5-triazine or 1,3,5-triazine rings, allows obtaining foams with improved thermal stability and reduced flammability [ 30 , 31 , 32 , 33 ].…”

Section: Introductionmentioning

confidence: 99%

Hardly Flammable Polyurethane Foams with 1,3-Pyrimidine Ring and Boron Atoms

Chmiel-Szukiewicz

2021

Polymers

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This work presents the results of research related to the determination of application possibilities of new oligoetherols with 1,3-pyrimidine rings and boron atoms in rigid polyurethane foam production. Oligoetherols were obtained from 1,3-bis(2-hydroxyethyl)uracil, boric acid, and ethylene carbonate. Their structure was determined by instrumental methods (IR, 1H-NMR and MALDI-ToF spectra) and the physicochemical and thermal properties were examined. Obtained oligoetherols were used for synthesis of polyurethane foams. Some properties of the foams, such as apparent density, water uptake, dimensions stability, thermal stability, compression strength, thermal conductivity, oxygen index, and horizontal burning were investigated. The introduction of boron atoms into the foam structure reduced their flammability, but unfortunately it had a negative effect on the water absorption of the obtained materials—the water absorption was higher compared to the boron-free foams. The obtained foams showed good thermal stability compared to classic, rigid polyurethane foams.

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Flame‐retardant features of various boron compounds in thermoplastic polyurethane and performance comparison with aluminum trihydroxide and magnesium hydroxide

et al. 2022

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The objective of this research was to examine and compare the flame-retardant properties of boron compounds with respect to conventional mineral fillers, namely aluminum trihydroxide (ATH) and magnesium hydroxide (MH) in thermoplastic polyurethane (TPU). Seven different boron compounds including zinc borate (ZnB), colemanite (C), boron oxide (BO), anhydrous borax (BX), melamine borate (MB), imidazolium borate (IB), and guanidinium borate (GB) were used as flame-retardant additive. The flame-retardant characteristics of the composites were investigated using limiting oxygen index (LOI), vertical and horizontal UL-94 tests, and mass loss calorimeter (MLC) tests. According to the flammability test results, the highest LOI value (33.5%) was obtained with the use of 60 wt% ATH and BO. All samples got HB rating in UL-94 HB test. The highest UL-94 V rating of V0 was achieved with the use of ATH (60 wt%), BO (60 wt%), and GB (50 wt%). According to MLC test results, C, BO, and IB showed distinct better performance than ATH and MH. The other ones showed almost the similar fire performances. The lowest pHRR (37 kW/m 2 ) and THE (16.2 MJ/m 2 ) values, which were corresponded to 62% and 20% reduction with respect to those of ATH containing one, were achieved with the use of 60 wt% BO. In brief, all studied additives exerted different levels of fire retardancy depending upon their type and BO showed the highest performance in terms of flammability and fire-retardant properties.

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Oligoetherols and polyurethane foams obtained from melamine diborate

Cited by 6 publications

References 9 publications

Polyurethane foams with 1,3,5-triazine ring, boron and silicon

Polyurethane foams with 1,3,5-triazine ring, boron and silicon

Hardly Flammable Polyurethane Foams with 1,3-Pyrimidine Ring and Boron Atoms

Flame‐retardant features of various boron compounds in thermoplastic polyurethane and performance comparison with aluminum trihydroxide and magnesium hydroxide

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