A P,N flame retardant containing flexible chain segments, imparting excellent toughness and flame retardancy to epoxy resins DOI
Penglun Zheng,

Zijian Yang,

Haihan Zhao

et al.

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

Published: Oct. 27, 2024

Abstract In order to enhance the flame retardancy of epoxy resin (EP) without affecting its mechanical properties, a phosphorus‐nitrogen synergistic retardant (MPCD) was synthesized in this paper by using melamine, paraformaldehyde, 9,10‐dihydro‐9‐oxa‐10‐phospha‐phenanthrene‐10‐oxide (DOPO) and cashew phenol as raw materials, which applied Ep improve toughness. Experiments have shown that only 5% content MPCD added into EPs could achieve significant LOI 35.8% successfully obtained V‐0 rating UL‐94 testing. contrast, PHRR with additional 456.4 kW/m 2 THR 80.2 MJ/m , were 52.6% 29.4% lower than pure EPs, respectively. The 963.1 113.6 indicated addition improved EP system's performance. impact strength 13.5 KJ/m resulted 99% increase EP/MPCD cured samples up 26.9 explained moiety's flexible chain segments. Furthermore, it is discovered researching flame‐retardant mechanism may significantly carbon layer's capacity form char maintain thermal stability. It can also efficiently trap free radicals dilute combustible gases produced during combustion. overall safety system acting biphasic both gas solidified phases at same time.

Language: Английский

Functionalized MXenes nanosheets inspired flame retardant epoxy composites: Mechanisms investigation and safety evaluation DOI
Junling Wang, Liang Li,

Konghao Yu

et al.

Construction and Building Materials, Journal Year: 2025, Volume and Issue: 464, P. 140124 - 140124

Published: Jan. 27, 2025

Language: Английский

Citations

2
Nonconventional phosphorus-based tertiary amine curing agent enabling the high fire safety, outstanding tensile strength and high glass transition temperature of epoxy resin DOI
Xueqi Chen, Yucai Lin, Weibin Bai

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 159293 - 159293

Published: Jan. 1, 2025

Language: Английский

Citations

1
Interfacial property optimization through the co-deployment of MOF-derived nickel phyllosilicate and DOPO: Effective reinforcement and flame retardancy of epoxy resin DOI
Shibin Nie,

Zongquan Zhao,

Wenli Zhai

et al.

Composites Part B Engineering, Journal Year: 2024, Volume and Issue: 289, P. 111947 - 111947

Published: Nov. 5, 2024

Language: Английский

Citations

8
Enhance the fire safety of epoxy resin using ammonium polyphosphate flame retardant with the sandwich structure containing catalytic carbon formation function DOI
Penglun Zheng,

Haihan Zhao,

Junwei Li

et al.

Journal of Applied Polymer Science, Journal Year: 2024, Volume and Issue: 141(26)

Published: April 20, 2024

Abstract Ammonium polyphosphate (APP) is often used to construct intumescent flame retardant systems together, but it faced with the problem of adding too much retardant. This paper envisions construction a modified APP (TR@ZIFAPP) sandwich structure by method covering, which, in order endow better effect. By constructing metal catalytic layer and triazine carbon formation layer, has both phosphorus–nitrogen synergistic functions. TR@ZIFAPP expected be flame‐retardant polymer composites low addition requirements, epoxy resin (EP) reveals that could achieve optimal effect when amount was only 3 wt%. The UL‐94 rating reached V‐0 grade, two off‐fire auto‐ignition time levels were 0.7 s. analysis its mechanism showed EP mainly through rapid isolate oxygen dilute flammable gas reach strong

Language: Английский

Citations

6
P/N synergistic integrated flame retardants with instant cross-linking at high-temperature for flame retardancy and impact resistance of epoxy resins DOI
Penglun Zheng,

Haihan Zhao,

Quanyi Liu

et al.

Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 225, P. 110817 - 110817

Published: May 10, 2024

Language: Английский

Citations

4
Synthesis of phosphorus fluorine containing polymers for flame-retardant, low surface energy and good dielectric performance epoxy resin electronic packaging materials DOI
Wenbo Du, Zhiyong Lin, Ting Chen

et al.

Polymer Degradation and Stability, Journal Year: 2024, Volume and Issue: 229, P. 110932 - 110932

Published: July 28, 2024

Language: Английский

Citations

3
Flame retardant based on metal catalyzed instantaneous crosslinking to form carbon for improving the safety performance of aircraft epoxy resin DOI
Penglun Zheng,

Haihan Zhao,

Junwei Li

et al.

Safety Science, Journal Year: 2024, Volume and Issue: 178, P. 106627 - 106627

Published: July 29, 2024

Language: Английский

Citations

1
A bio‐based reactive P/N synergistic flame retardant for improving the fire safety and mechanical properties of epoxy resin DOI Open Access
Chenchen Wang, Bin Ren, Rui Ma

et al.

Polymer Engineering and Science, Journal Year: 2024, Volume and Issue: 64(10), P. 4730 - 4745

Published: July 30, 2024

Abstract A high‐efficiency bio‐based P/N synergistic flame retardant (PVFD) is synthesized by combining furfurylamine and vanillin. The compound incorporates two different valence states of phosphorus as structures, namely phenylphosphoryl dichloride (PPDC) 9,10‐dihydro‐9‐oxa‐10‐ phosphophenyl‐10‐oxide (DOPO). PVFD epoxy resin (EP) can cure into a cross‐linked network, thus not only improving the mechanical properties EP but also achieving effects. Experimental results demonstrate that EP/PVFD‐5 obtained adding 5 wt% to passes UL‐94 test achieves V‐0 grade, whose limiting oxygen index (LOI) up 38.0%. exhibits decrease 10.14% in peak heat release rate (PHRR), 16.90% total (THR), 10.0% smoke (TSP), while residual carbon content increases 8.5%. Additionally, bending strength, modulus, tensile elongation at break increase 3.9%, 4.9%, 45.1%, 26.3%, respectively. Highlights raw materials we used are eco‐friendly readily available. PVFD, an efficient P‐N compound, was synthesized. promotes char formation dilutes O 2 concentration. does cause degradation EP.

Language: Английский

Citations

1
Coral reefs-inspired strategy for hierarchical prussian blue derived nickel phyllosilicate architecture: Efficient flame retardancy and mechanical reinforcement of epoxy nanocomposites DOI Creative Commons

Shibin Nie,

Zongquan Zhao,

Jingwen Wang

et al.

Nano Materials Science, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 1, 2024

Language: Английский

Citations

1
A P,N flame retardant containing flexible chain segments, imparting excellent toughness and flame retardancy to epoxy resins DOI
Penglun Zheng,

Zijian Yang,

Haihan Zhao

et al.

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

Published: Oct. 27, 2024

Abstract In order to enhance the flame retardancy of epoxy resin (EP) without affecting its mechanical properties, a phosphorus‐nitrogen synergistic retardant (MPCD) was synthesized in this paper by using melamine, paraformaldehyde, 9,10‐dihydro‐9‐oxa‐10‐phospha‐phenanthrene‐10‐oxide (DOPO) and cashew phenol as raw materials, which applied Ep improve toughness. Experiments have shown that only 5% content MPCD added into EPs could achieve significant LOI 35.8% successfully obtained V‐0 rating UL‐94 testing. contrast, PHRR with additional 456.4 kW/m 2 THR 80.2 MJ/m , were 52.6% 29.4% lower than pure EPs, respectively. The 963.1 113.6 indicated addition improved EP system's performance. impact strength 13.5 KJ/m resulted 99% increase EP/MPCD cured samples up 26.9 explained moiety's flexible chain segments. Furthermore, it is discovered researching flame‐retardant mechanism may significantly carbon layer's capacity form char maintain thermal stability. It can also efficiently trap free radicals dilute combustible gases produced during combustion. overall safety system acting biphasic both gas solidified phases at same time.

Language: Английский

Citations

0