Surface Flame-Retardant Systems of Rigid Polyurethane Foams: An Overview

Jiang, Yuping; Yang, Hongyu; Lin, Xiang; Xiang, Simeng; Feng, Xiaming; Wan, Chaojun

doi:10.3390/ma16072728

Cited by 14 publications

(5 citation statements)

References 77 publications

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“…RPUF can cover intricate shapes as a coating material by using the spray method, but the adhesion is dependent on the chemical structure of the polymer matrix and is expected to be rigid at ambient temperature conditions but flexible at cryogenic conditions. This makes RPUF one of the excellent thermal insulation materials available [22], [23]. Also, in the cosmetic industry, RPUF pumices are considered a good substitute for natural pumices because of their considerable size, shape, and color control during production.…”

Section: Introductionmentioning

confidence: 99%

Influence of quartz and marble on the performance of particulate-filled rigid polyurethane foams

Olajesu Favor Olanrewaju,

Isiaka Oluwole Oladele,

Taiwo Fisayo Omotosho

et al. 2024

Open Access Res. J. Eng. Technol.

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This work was carried out to investigate the roles of quartz and marble on the performance of polyurethane particulate-filled composites. Prior to the mixing, the quartz and marble were pulverized and sieved to obtain an average particle size of less than 90 µm. Polyurethane (PU) was produced from isocyanate and polyol by a two-step method in which marble and quartz particles were incorporated in predetermined proportions. Three different weight ratios were utilized to investigate the physical, chemical, and mechanical behavior of the pristine rigid polyurethane foam (RPUF) and the marble and quartz-filled RPUF using analytical equipment such as FTIR, XRF, and SEM. The mechanical properties were performed according to the ASTM standards, where the compressive and flexural strengths were investigated using the universal testing machine. Overall, the RPUF shows the hydroxyl bands, while the principal elements of fillers are Calcium and Silicon. It was discovered from the results that adding these fillers improved the mechanical properties of the filled samples, where the compressive strength was enhanced.

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Section: Introductionmentioning

confidence: 99%

Influence of quartz and marble on the performance of particulate-filled rigid polyurethane foams

Olajesu Favor Olanrewaju,

Isiaka Oluwole Oladele,

Taiwo Fisayo Omotosho

et al. 2024

Open Access Res. J. Eng. Technol.

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“…To date, various flame retardants have been developed to achieve satisfactory fire resistance in different polymer materials, such as halogenated flame retardants [ 15 , 16 , 17 , 18 , 19 ], inorganic layered compounds [ 20 , 21 , 22 , 23 ], and phosphorous–nitrogen intumescent flame retardants [ 24 , 25 , 26 , 27 ]. Flame-retardant polymers and their composites have been used widely in construction, electronics, transportation, and so on [ 28 , 29 , 30 ]. Regarding the preparation of flame retardants, the conventional method is liquid-phase synthesis [ 31 , 32 ], in which organic solvents and complicated purification are always required.…”

Section: Introductionmentioning

confidence: 99%

Facile Ball Milling Preparation of Flame-Retardant Polymer Materials: An Overview

et al. 2023

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To meet the growing needs of public safety and sustainable development, it is highly desirable to develop flame-retardant polymer materials using a facile and low-cost method. Although conventional solution chemical synthesis has proven to be an efficient way of developing flame retardants, it often requires organic solvents and a complicated separation process. In this review, we summarize the progress made in utilizing simple ball milling (an important type of mechanochemical approach) to fabricate flame retardants and flame-retardant polymer composites. To elaborate, we first present a basic introduction to ball milling, and its crushing, exfoliating, modifying, and reacting actions, as used in the development of high-performance flame retardants. Then, we report the mixing action of ball milling, as used in the preparation of flame-retardant polymer composites, especially in the formation of multifunctional segregated structures. Hopefully, this review will provide a reference for the study of developing flame-retardant polymer materials in a facile and feasible way.

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“…[11][12][13][14] The incorporation of RPUF in the form of microcapsules has not been extensively studied. 15 Based on this convenient improvement idea, in this study, a core-shell flame retardant PMDOPO was successfully synthesized with PMMA as the shell and DOPO as the core, and RPUF/PMDOPO composite foam material was obtained by incorporating it into RPUF. The microstructure, mechanical properties, and flame retardant mechanism of PMDOPO and RPUF/PMDOPO were investigated by universal testing machine, scanning electron microscope, thermogravimetric analysis, x-ray electron spectroscopy, Fourier transform infrared spectroscopy and vertical combustion test.…”

Section: Introductionmentioning

confidence: 99%

Effect of microencapsulation flame retardant on flame retardancy and mechanical properties of rigid polyurethane foams

Peng,

Li,

et al. 2023

J of Applied Polymer Sci

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A microencapsulated flame retardant PMDOPO was synthesized by solution blending method using EGDMA as initiator and AIBN as cross‐linking agent. Rigid polyurethane foams were prepared in a one‐step process. PMDOPO was incorporated into the foams by blending with polycarbonate diols (PCDL) and foaming additives. The results of Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) showed that PMDOPO was well formed and uniformly dispersed in the foam. The pore size and density of the foams first increased and then decreased with the addition of PMDOPO. X‐ray photoelectron spectroscopy (XPS), vertical combustion test, and thermogravimetric analysis (TGA) showed that the PMDOPO content was directly proportional to the flame retardancy and the thermal stability. The major weight loss shifted to higher temperature intervals. The amount of residual char of RPUF/PMDOPO‐25 was enhanced 50 times to 10.63% compared to pure RPUF. In addition, SEM and Raman analyses of the combustion residual char revealed that a phosphorus‐containing char layer was formed during thermal degradation. The dense charcoal layer helps to insulate heat and suppress combustion. The universal testing machine showed that RPUF with 15 wt% content had the best compression resistance, with an enhancement of 1.8 MPa over pure RPUF.

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Surface Flame-Retardant Systems of Rigid Polyurethane Foams: An Overview

Cited by 14 publications

References 77 publications

Influence of quartz and marble on the performance of particulate-filled rigid polyurethane foams

Influence of quartz and marble on the performance of particulate-filled rigid polyurethane foams

Facile Ball Milling Preparation of Flame-Retardant Polymer Materials: An Overview

Effect of microencapsulation flame retardant on flame retardancy and mechanical properties of rigid polyurethane foams

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