A molecularly engineered bioderived polyphosphate for enhanced flame retardant, UV-blocking and mechanical properties of poly(lactic acid)

Zhang, Yan; Jiang, Jing; Liu, Ting; Xi, Liangdong; Sai, Ting; Ran, Shiya; Fang, Zhengping; Huo, Siqi; Song, Pingan

doi:10.1016/j.cej.2021.128493

Cited by 165 publications

(75 citation statements)

References 50 publications

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“…This was caused by the release of a large number of volatile gases during the combustion process of the material, which weakened the protective effect of the carbon layer on the matrix and increased the combustion intensity of RPUF/APP (Zhang et al, 2020c). As can be seen from Figures 7B,D, both RPUF/MAPP-1000 and RPUF/MAPP-30 exhibit a closed bubble structure, which is the characteristic morphology of the intumescent flame retardant systems (Zhang et al, 2021). It showed that modified APP was conducive to promoting the formation of the expanded carbon layer, thus inhibiting the exchange of heat and flammable gas, and effectively preventing further degradation of the matrix.…”

Section: Flame-retardant Performance Of Rpuf Compositesmentioning

confidence: 87%

Rigid Polyurethane Foams Containing Modified Ammonium Polyphosphate Having Outstanding Charring Ability and Increased Flame Retardancy

Yang

Shao

2021

Front. Mater.

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Ammonium polyphosphate (APP) with different polymerization degrees were modified by a novel phosphorus-containing organosilicon compound (PCOC), and the products obtained were coded as MAPP-30 and MAPP-1000. Then they were applied to prepare flame-retardant rigid polyurethane foam (RPUF) separately. The impact of modified APP (MAPP) on the flame-retardant properties of RPUF was investigated by the limited oxygen index (LOI) test, horizontal burning test, and cone calorimeter test. The morphologies of the char residues were observed by SEM. Furthermore, the mechanical properties of RPUF composites were measured by the compressive strength test. The results showed that whether the degree of polymerization of MAPP is 30 or 1000, they both had greater charring ability and better flame-retardant properties than unmodified APP. The residual char yield of RPUF/MAPP-30 (37.3%) and RPUF/MAPP-1000 (36.5%) were both significantly higher than RPUF/APP-30 (22.8%) and RPUF/APP-1000 (24.9%). The peak heat release rate value of RPUF/MAPP-30 was 29.9% lower than that of RPUF/APP-30, and the drop of RPUF/MAPP-1000 was 50.9% compared to RPUF/APP-1000. Moreover, the total heat release of RPUF/MAPP-1000 (9.7 MJ/m2) was much lower than that of RPUF/MAPP-30 (11.3 MJ/m2). In summary, MAPP-1000 has the best flame-retardant properties among all RPUF composites. In addition, the results also showed that flame-retardant performance and the mechanical properties dramatically decreased with the increase in the addition of MAPP-1000, and the RPUF composite had the best comprehensive performance with 20% content of MAPP-1000.

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Section: Flame-retardant Performance Of Rpuf Compositesmentioning

confidence: 87%

Rigid Polyurethane Foams Containing Modified Ammonium Polyphosphate Having Outstanding Charring Ability and Increased Flame Retardancy

Yang

Shao

2021

Front. Mater.

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“…In the last decade, biodegradable polymers have drawn particular attention due to their advantages of biodegradability, good mechanical properties, easy processing, and chemical resistance (Chen et al, 2017;Chen Y. et al, 2019;Delamarche et al, 2020;He W. et al, 2020;Li et al, 2018;Xiong et al, 2019;Xu et al, 2019;Yang et al, 2020;Zhang et al, 2021;Zhang et al, 2020). As a typical representative, poly(butylene succinate) (PBS) has wide applications in the fields of biomedical materials, transport, construction, electrical industry, and packing materials (Bahrami et al, 2021;Hu et al, 2019;Li et al, 2020;Xue et al, 2019;Zhao et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Investigating the Effect of Aluminum Diethylphosphinate on Thermal Stability, Flame Retardancy, and Mechanical Properties of Poly(butylene succinate)

et al. 2021

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Poly(butylene succinate) is one of the most promising biodegradable polymers, but its applications are limited by poor flame retardancy. In this work, poly(butylene succinate)/diethylphosphinate (PBS/AlPi) composites were fabricated to investigate the effect of AlPi on their thermal stability, flame retardancy, and mechanical properties. It was found that the high content of AlPi decreased the thermal stability of PBS, and the decrease became stronger under the air atmosphere. When the content of AlPi reached 25wt%, the flame retardancy was improved with limited oxygen index (LOI) of 29.5%, V0 rating in UL-94 vertical burning test, and 49.3% reduction on the peak of heat release rate (PHRR) in cone calorimeter test. Meanwhile, the addition of AlPi could improve the mechanical properties of PBS with high tensile strength and Young’s modulus, which was ascribed to the compatible effect of maleic anhydride-grafted poly(butylene succinate) (PBS-g-MA) with good filler dispersion and strong matrix-particles interaction. Thus, the AlPi was an effective flame retardant to PBS, so that PBS/AlPi composites displayed excellent flame retardancy without seriously sacrificing other comprehensive performances.

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“…However, they show the possibility of chronological migration affecting fire resistance Xue et al, 2020). At the same time, due to the lack of strong covalent adhesion of PUF, the flame retardant deteriorates due to migration during the combustion process (Chai et al, 2019;Li et al, 2019;Yu et al, 2021;Zhang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Improvement of Flame Retardancy of Polyurethane Foam Using DOPO-Immobilized Silica Aerogel

Zheng

Dong

et al. 2021

Front. Mater.

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In this work, silica aerogel was modified by 9,10-dihydro-9-oxa-10-phosphaphenanthrene-1-oxide (DOPO). Then DOPO-immobilized silica aerogel nanoparticles were used as a flame retardant to prepare flame-retardant polyurethane foams. Microscale combustion calorimeter and cone calorimeter tests were employed to evaluate the flame retardancy of polyurethane foams. It was found that both the heat release rate and the total heat release of the composites were reduced with the incorporation of DOPO immobilized silica aerogel. It is speculated that the DOPO-immobilized silica aerogel nanoparticles can inhibit the degradation of polyurethane and catalyze the formation of carbonaceous carbon on the surface.

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A molecularly engineered bioderived polyphosphate for enhanced flame retardant, UV-blocking and mechanical properties of poly(lactic acid)

Cited by 165 publications

References 50 publications

Rigid Polyurethane Foams Containing Modified Ammonium Polyphosphate Having Outstanding Charring Ability and Increased Flame Retardancy

Rigid Polyurethane Foams Containing Modified Ammonium Polyphosphate Having Outstanding Charring Ability and Increased Flame Retardancy

Investigating the Effect of Aluminum Diethylphosphinate on Thermal Stability, Flame Retardancy, and Mechanical Properties of Poly(butylene succinate)

Improvement of Flame Retardancy of Polyurethane Foam Using DOPO-Immobilized Silica Aerogel

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