Novel eco-friendly maleopimaric acid based polysiloxane flame retardant and application in rigid polyurethane foam

Wang, Shibo; Yang, Xinxin; Li, Zhaoshuang; Xu, Xu; Liu, He; Wang, Dan; Min, Huihua; Shang, Shibin

doi:10.1016/j.compscitech.2020.108272

Cited by 55 publications

(31 citation statements)

References 64 publications

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“…One of the most popular and commonly used thermosetting polymeric materials is rigid polyurethane (PUR) foam [ 1 ]. Due to its low thermal conductivity, it is mainly used in the building and construction industry [ 2 ].…”

Section: Introductionmentioning

confidence: 99%

Fly Ash as an Eco-Friendly Filler for Rigid Polyurethane Foams Modification

et al. 2021

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There is currently a growing demand for more effective thermal insulation materials with the best performance properties. This research paper presents the investigation results on the influence of two types of filler on the structure and properties of rigid polyurethane foam composites. Fly ash as a product of coal combustion in power plants and microspheres of 5, 10, 15, and 20 wt.%, were used as rigid polyurethane foams modifiers. The results of thermal analysis, mechanical properties testing, and cellular structure investigation performed for polyurethane composites show that the addition of fly ash, up to 10 wt.%, significantly improved the majority of the tested parameters. The use of up to 20 wt.% of microspheres improves the mechanical and thermal properties and thermal stability of rigid polyurethane foams.

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Section: Introductionmentioning

confidence: 99%

Fly Ash as an Eco-Friendly Filler for Rigid Polyurethane Foams Modification

et al. 2021

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“…Rigid polyurethane foams (RPUF), as a novel organic porous material, are widely applied in building, pipeline engineering, refrigerator, and other fields for its excellent thermal insulation performance and mechanical properties (Hejna et al, 2018;Li et al, 2020;Wang et al, 2020). However, RPUF is easily to be ignited and released kinds of toxic and combustible gases, which would result in heavy casualties in the fire (Barkoula et al, 2008;Liu and Wang, 2018).…”

Section: Introductionmentioning

confidence: 99%

Flame Retarded Rigid Polyurethane Foams Composites Modified by Aluminum Diethylphosphinate and Expanded Graphite

Hu¹,

Zhou

Li³

et al. 2021

Front. Mater.

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Rigid polyurethane foam (RPUF) was an organic porous material, which was applied in many fields for excellent thermal insulation and mechanical properties, especially in building insulation. However, the poor fire performance significantly suppresses its further application. In this work, aluminum diethylphosphinate (ADP) combined with expanded graphite (EG) to form a synergistic flame retarded system, which was introduced to fabricate flame retarded rigid polyurethane foam composites (FR-RPUF) by one-step water-blown method. Furthermore, thermal insulation, thermal stability, fire performance, and decomposition products of RPUF and FR-RPUF composites were systematically investigated. It was found that FR-RPUF composites possessed LOI of 25.9 vol% with V-1 rating in UL-94 test when 10 php of ADP and 20 php of EG were added, which were better than RPUF composites with ADP or EG added alone. MCC test showed that RPUF/ADP24/EG6 had the lowest PHRR value of 159.85 W/g, which was 52.01 W/g lower than that of pure RPUF. Gas phase products investigation implied that the combination of ADP and EG could decrease toxic and combustible gases intensities, thus significantly enhancing fire safety of FR-RPUF composites. SEM test indicated that ADP and EG promoted the formation of dense and continuous char residue, which significantly inhibited heat and substance transfer in combustion, thus significantly enhancing fire performance of FR-RPUF composites.

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“…At present, the method used to improve the thermostability of material is mostly the addition of added flame retardants, [19][20][21] but these kinds of added flame retardant will lead to a significant degradation in the physical properties of material. 22 Therefore, reactive flame retardants applied to polyurethane are the focus of recent research.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of polyols containing nitrogen‐phosphorus from vegetable oil derivatives for polyurethane film applications

Jiang

Zhao²,

Zhao³

et al. 2021

J of Applied Polymer Sci

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Methyl oleate, a kind of vegetable oil derivatives, was used as the raw material to synthesize novel polyols containing nitrogen and phosphorus (PNP) by three steps: amidaion, epoxidation, and ring-opening reaction. The structure of the ensuing PNP was characterized by gel permeation chromatography, Fourier transform infrared spectroscopy, and nuclear magnetic resonance spectroscopy. Then, polyurethane films were prepared by mixing the resulting polyols (PNP) and poly-(tetra methylene glycol) with isophorone diisocyanate in different proportions. After that, the thermostability of polyurethane films was investigated by limiting oxygen index (LOI), thermogravimetry, and cone calorimeter test. Similarly, mechanical property of polyurethane films was studied by tensile test. The results showed that as the amount of PNP increased, the tensile strength of polyurethane films increased from 2.0 to 13.5 MPa, the LOI values of polyurethane films went up from 20.1% to 25.5%. Moreover, the initial decomposition temperature of polyurethane films improved from 280 to 312 C and the total heat release drooped from 32.2 to 21.7 kW/m 2 without adding any other flame retardant. Therefore, it was observed that the polyurethane films have superior thermal stability and mechanical property and appear suitable for a wide range of applications.

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Novel eco-friendly maleopimaric acid based polysiloxane flame retardant and application in rigid polyurethane foam

Cited by 55 publications

References 64 publications

Fly Ash as an Eco-Friendly Filler for Rigid Polyurethane Foams Modification

Fly Ash as an Eco-Friendly Filler for Rigid Polyurethane Foams Modification

Flame Retarded Rigid Polyurethane Foams Composites Modified by Aluminum Diethylphosphinate and Expanded Graphite

Synthesis of polyols containing nitrogen‐phosphorus from vegetable oil derivatives for polyurethane film applications

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