A P/N-containing hardener endowing bio-based epoxy thermosets with excellent thermal, mechanical and intrinsically flame-retardant performances

Guo, Wenwen; Liang, Fuwei; Chen, Shun; Jin, Liping; Ji, Chenpeng; Zhang, Ping; Fei, Bin

doi:10.1016/j.conbuildmat.2023.130707

Cited by 17 publications

(8 citation statements)

References 58 publications

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“…The dynamic mechanical property of the material were investigated using DMA. The crosslink density ν e can be calculated from the rubber elasticity theory, 35 and Table 4 summarized the relevant results. From Figure 14a, the storage modulus of EP/FREP and EP/FRDM was higher than that of neat EP at room temperature.…”

Section: Resultsmentioning

confidence: 99%

A novel epoxy resin system containing bismaleimide and DOPO‐based flame retardant with excellent flame retardancy and toughness

Liu

Zhang

Jia

et al. 2023

J of Applied Polymer Sci

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Abstract9,10‐dihydro‐9‐oxo‐10‐phosphaphenanthrene‐10‐oxide (DOPO) and special tetra functional epoxy resin (EP) AG‐601 were combined to synthesize a reactive flame retardant (FREP) and then incorporated into EP, obtaining the flame retardant material EP/FREP. To achieve EPs with higher flame retardancy and mechanical properties, a new intrinsically flame retardant EP system named EP/FRDM was produced by modifying EP/FREP with high thermal resistance bismaleimide (BDM). In the presence of a distinct FRDM structure comprising phosphaphenanthrene/nitrogen, the EP possessed superior flame retardancy and impact toughness. The curing process of EP/FRDM was investigated using Real‐Time Fourier‐transform Infrared. In terms of fire performance, the limiting oxygen index of the EP/FRDM‐3 was raised from 31.4% to 38.2%, and the vertical burning rating was improved after BDM was added to the EP/FREP system. It was discovered that EP/FRDM exhibited a classic two‐phase flame retardant influence by analyzing the residual carbon morphology and pyrolysis behavior. Simultaneously, the glass transition temperature (Tg) of EP/FRDM remained essentially stable, and the char residue yield rose markedly, which indicated that the system had outstanding thermal stability, according to the results of the dynamic mechanical analysis and thermogravimetric analysis tests. Notably, the EP/FRDM experienced an internal chain expansion reaction when BDM was added, giving flame retardant materials excellent flexural and impact strengths and promising future application opportunities.

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Section: Resultsmentioning

confidence: 99%

A novel epoxy resin system containing bismaleimide and DOPO‐based flame retardant with excellent flame retardancy and toughness

Liu

Zhang

Jia

et al. 2023

J of Applied Polymer Sci

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“…However, the organic and aliphatic structure of most polymers suffers from intrinsic flammability. [ 1 ] As a result, their widespread use in the construction field often triggers large fire disasters with immeasurable losses, as happened at the Brazilian National Museum in 2018 and in London in 2017. [ 2 ] With the ever‐increasing development of energy storage, consumer electronics, and automotive industries, the demand for high‐performance polymers with satisfied fire retardancy and advanced mechanical properties has become increasingly urgent.…”

Section: Introductionmentioning

confidence: 99%

Fire‐retardant and high‐strength polymeric materials enabled by supramolecular aggregates

Liu,

Zhu,

Feng

et al. 2024

Aggregate

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High‐performance polymers have proliferated in modern society across a variety of industries because of their low density, good chemical stability, and superior mechanical properties. However, while polymers are widely applied, frequent fire disasters induced by their intrinsic flammability have caused massive impacts on human beings, the economy, and the environment. Supramolecular chemistry has recently been intensively researched to provide fire retardancy for polymers via the physical barrier and char‐catalyzing effects of supramolecular aggregates. In parallel, the noncovalent interactions between supramolecular and polymer chains, such as hydrogen bonding, π–π interactions, metal–ligand coordination, and synergistic interactions, can endow the matrix with enhanced mechanical strength. This makes it possible to integrate physical–chemical properties and noncovalent interactions into one supramolecular aggregate‐based high‐performance polymeric system on demand. However, fulfilling these promises needs more research. Here, we provide an overview of the latest research advances of fire‐retardant and high‐strength polymer materials based on supramolecular structures and interactions of aggregates. This work reviews their conceptual design, characterization, modification principles, performances, applications, and mechanisms. Finally, development challenges and perspectives on future research are also discussed.

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“…Aerogels are mainly used as thermal protection materials for spacecraft, materials for preventing the impact and vibration of spacecraft during high-speed flight, and structural materials for manufacturing light aerospace spacecraft. [1][2][3][4] Although silica aerogels have excellent thermal insulation properties, their application is severely restricted by their poor mechanical properties and cumbersome drying process. [5][6][7] Therefore, polymer aerogels have garnered increasing attention because they have better mechanical properties, processability, and density than inorganic aerogels.…”

Section: Introductionmentioning

confidence: 99%

Lightweight polybenzoxazole aerogels with high compressive strength, ultralow dielectric constants, and excellent thermal stability

Zhang,

Liu,

Yang

et al. 2024

Polym. Chem.

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A P/N-containing hardener endowing bio-based epoxy thermosets with excellent thermal, mechanical and intrinsically flame-retardant performances

Cited by 17 publications

References 58 publications

A novel epoxy resin system containing bismaleimide and DOPO‐based flame retardant with excellent flame retardancy and toughness

A novel epoxy resin system containing bismaleimide and DOPO‐based flame retardant with excellent flame retardancy and toughness

Fire‐retardant and high‐strength polymeric materials enabled by supramolecular aggregates

Lightweight polybenzoxazole aerogels with high compressive strength, ultralow dielectric constants, and excellent thermal stability

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