Construction of a hydrophobicity, phosphorus‐ and nitrogen‐containing layered double hydroxides‐based synergistic effect flame retardant for poly (lactic acid) DOI Open Access
Kunyan Wang, Yibo Gao, Zuocheng Zhang

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract In this work, a synergistic effect strategy was explored for fabricating hydrophobicity, phosphorus‐ and nitrogen‐containing layered double hydroxides nanosheets (LDHs) based flame retardant (LDHs‐K@DM). This process achieved by amination of the surface LDHs and, subsequently, interfacial self‐assembly with high P content diethylenetriaminpenta (methylene‐phosphonic acid) (DTPMP) N melamine (MEL). The chemical construction thermal stabilization properties LDHs‐K@DM were confirmed via different characterization approaches. results revealed that successfully prepared transformed into hydrophobicity water contact angle. Moreover, had better stability. After that, molten compounded biobased polylactic acid (PLA). It suggested uniformly dispersed in PLA matrix could accelerate decomposition to form char residues. Most importantly, addition 20 wt% can endow composite achieve desirable UL‐94 V‐0 rating limiting oxygen index value 30.9%. Finally, mechanism comprehensively analyzed. decorating preparing is promising industrial production.

Language: Английский

Flame‐Retardant Rigid Polyurethane Foam Composites Based on Piperazine Pyrophosphate/Steel Slag: A New Strategy for Utilizing Metallurgical Solid Waste DOI Open Access
Xiuyu Liu, Chunhua Fu, Feilong Wang

et al.

Journal of Applied Polymer Science, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 29, 2025

ABSTRACT In this work, piperazine pyrophosphate (PAPP) and metallurgical solid steel slag (SS) are used to fabricate flame‐retardant rigid polyurethane foam (RPUF) composites through a one‐step all‐water foaming technology. The thermal stability, combustion properties, flame retardancy of the PAPP/SS composite were investigated by thermogravimetric (TG) analysis, cone calorimetry, limiting oxygen index testing (LOI), UL‐94 vertical burn testing. RPUF‐3 showed char residue 28.6 wt% at 750°C compared with 24.9 pure sample, indicating better stability FRPRUF composites. possessed an LOI 21.5 vol% achieved V‐0 level in test. Cone calorimetry displayed peak heat release rate fire growth decreased 12.66% 41.6%, respectively, those RPUF. incorporation led formation compact layer structures during combustion. Pyrophosphoric acid, generated from decomposition PAPP, promotes esters, ethers, alcohols, whereas metal oxides SS enhance compactness layer. This enhanced structural integrity obstructs mass transmission zone, effectively improving condensed‐phase retardancy. approach offers novel strategy for fabrication high‐performance RPUF high‐value utilization SS.

Language: Английский

Citations

0
Impact of diisobutyl aluminum hypophosphite on flame‐retarded thermoplastic polyester elastomers composites and its mechanism DOI Creative Commons

Ming Yang,

Yushu Xiang,

Zitao Zhang

et al.

Journal of Vinyl and Additive Technology, Journal Year: 2025, Volume and Issue: unknown

Published: March 18, 2025

Abstract Thermoplastic polyester elastomer (TPEE) is widely used in industries such as healthcare, electronics and electrical appliances, wire cable sheathing, automobiles due to its excellent comprehensive properties. However, the extreme flammability significantly restricts practical applications further development. To address this issue, an additive, aluminum diisobutylaluminium hypophosphite (APBA), was introduced into TPEE flame retardant. The results showed that limiting oxygen index (LOI) of composite with 17.5 wt% APBA increased from 17.5% (pure TPEE) 33.8%, corresponding vertical combustion grade (UL‐94) reached V‐0 level. In addition, TPEE/APBA materials exhibit relatively good mechanical insulation tensile strength maintained at 10.57 MPa, volume resistivity by 491.47%. According result gas–solid phase products analysis composite, quenching effect phosphorus‐containing free radicals resulting confirmed. Meanwhile, addition promoted formation a stable, dense, smooth carbon layer composed aluminum‐containing polyphosphate graphite structure, thus isolating heat transfer. Highlights (17.5 wt%) achieved UL‐94 rating high LOI 33.8%. played dual functions gas condensed phases retardant for TPEE. flame‐retardant mechanism elucidated.

Language: Английский

Citations

0
Sustainable lignin-based high-efficiency flame-retardant epoxy resins with excellent mechanical properties DOI

Xiang Song,

Hongbin Lv, Zhiming Jiang

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 282, P. 136742 - 136742

Published: Oct. 19, 2024

Language: Английский

Citations

1
Construction of a hydrophobicity, phosphorus‐ and nitrogen‐containing layered double hydroxides‐based synergistic effect flame retardant for poly (lactic acid) DOI Open Access
Kunyan Wang, Yibo Gao, Zuocheng Zhang

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 10, 2024

Abstract In this work, a synergistic effect strategy was explored for fabricating hydrophobicity, phosphorus‐ and nitrogen‐containing layered double hydroxides nanosheets (LDHs) based flame retardant (LDHs‐K@DM). This process achieved by amination of the surface LDHs and, subsequently, interfacial self‐assembly with high P content diethylenetriaminpenta (methylene‐phosphonic acid) (DTPMP) N melamine (MEL). The chemical construction thermal stabilization properties LDHs‐K@DM were confirmed via different characterization approaches. results revealed that successfully prepared transformed into hydrophobicity water contact angle. Moreover, had better stability. After that, molten compounded biobased polylactic acid (PLA). It suggested uniformly dispersed in PLA matrix could accelerate decomposition to form char residues. Most importantly, addition 20 wt% can endow composite achieve desirable UL‐94 V‐0 rating limiting oxygen index value 30.9%. Finally, mechanism comprehensively analyzed. decorating preparing is promising industrial production.

Language: Английский

Citations

0