Smoke suppression and thermal conductivity of epoxy resin modified by Al 2 O 3 and hyperbranched flame retardant

2021 ◽  
pp. 51654
Author(s):  
Huawei Qiao ◽  
Xiuhuang Lin ◽  
Wei Zhong ◽  
Jiashui Lan ◽  
Huagui Zhang ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Smoke Suppression

scholarly journals Preparation and characterization of polydopamine/melamine microencapsulated red phosphorus and its flame retardance in epoxy resin

RSC Advances ◽  
2021 ◽  
Vol 11 (33) ◽  
pp. 20391-20402
Author(s):  
Chen Cheng ◽  
Yanling Lu ◽  
Weining Ma ◽  
Shaojie Li ◽  
Jun Yan ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Shell Structure ◽  
Composite Shell ◽  
Intumescent Flame Retardant ◽  
Smoke Suppression ◽  
Flame Retardance ◽  
Red Phosphorus ◽  
Composite Shell Structure

Red phosphorus was coated by a polydopamine/melamine composite shell structure, which constituted an intumescent flame retardant with superior flame retardance and smoke suppression performance for epoxy resin.

scholarly journals Effects of a Macromolecule Spirocyclic Inflatable Flame Retardant on the Thermal and Flame Retardant Properties of Epoxy Resin

Polymers ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 132 ◽  
Author(s):  
Kunpeng Song ◽  
Yinjie Wang ◽  
Fang Ruan ◽  
Jiping Liu ◽  
Nianhua Li ◽  
...  
Keyword(s):  
Heat Release ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Phosphorus Oxychloride ◽  
Raw Materials ◽  
Smoke Suppression ◽  
Step Method ◽  
Scanning Calorimetry ◽  
New Strategy ◽  
Flame Retardant Properties

A new strategy for the preparation of an integrated three-source intumescent flame retardant (IFR) has been developed to improve the flame-retardant and smoke suppression performance of epoxy resin (EP) with a synergistic flame retardant effect. Herein, the synthesis of a macromolecular spirocyclic phosphorus/nitrogen-containing IFR poly sulfonamide spirocyclic pentaerythritol bisphosphonate (SAPC) is reported via a two-step method that uses pentaerythritol, phosphorus oxychloride and sulfonamide (SAA) as raw materials. Subsequently, the SAPC was incorporated into EP to prepare the composite to investigate its thermal stability, flame retardancy, and smoke suppression performance. Herein, a differential scanning calorimetry (DSC) analysis showed that the addition of SAPC increased the glass transition temperature (Tg) of the composite. Cone test results indicated that the incorporation of 8 wt % SAPC significantly improved the flame-retardant performance for the composite, with a 43.45% decrease in peak of heat release rate, a 28.55% reduction in total heat release, and a 30.04% decrease in total smoke release. Additionally, the composite received the V-0 rating in a UL-94 vertical burning test, accompanied by the “blowout” phenomenon. After the addition of SAPC, the amount of flammable gas products from the EP composite decomposition was obviously suppressed, and the amount of non-flammable as was increased. All of this suggests a good dilution role of SAPC. There are enough reasons to believe that the enhanced flame-retardant and toxicity suppression performance for the EP composite can be attributed to the good coordination of carbonization agent, acid source, and blowing agent in the SAPC structure.

An Effective Flame Retardant and Smoke Suppression Oligomer for Epoxy Resin

2013 ◽  
Vol 52 (27) ◽  
pp. 9397-9404 ◽  
Author(s):  
Qiang Lv ◽  
Jian-Qian Huang ◽  
Ming-Jun Chen ◽  
Jing Zhao ◽  
Yi Tan ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Smoke Suppression

scholarly journals Zeolitic imidazolate framework-8 was coated with silica and investigated as a flame retardant to improve the flame retardancy and smoke suppression of epoxy resin

RSC Advances ◽  
2018 ◽  
Vol 8 (5) ◽  
pp. 2575-2585 ◽  
Author(s):  
Wenzong Xu ◽  
Guisong Wang ◽  
Yucheng Liu ◽  
Rui Chen ◽  
Wu Li
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Flame Retardancy ◽  
Shell Structure ◽  
Smoke Suppression ◽  
Core Shell ◽  
Zeolitic Imidazolate Framework ◽  
The Core ◽  
Core Shell Structure

Synthesis of the core–shell structure of ZIF-8@SiO2 and its effect on the flame retardancy of epoxy resin.

Effect of Ni 2+ chelated to the surface of PBFA on the charring flame retardant and smoke suppression properties of epoxy resin

2020 ◽  
Vol 60 (10) ◽  
pp. 2541-2549
Author(s):  
Kailun Zhang ◽  
Hongjuan Wu ◽  
Ruifang Wu ◽  
Guang Yang ◽  
Tian Wang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Epoxy Resin ◽  
Smoke Suppression

scholarly journals The Effect of Multilevel Carbon Reinforcements on the Fire Performance, Conductivity, and Mechanical Properties of Epoxy Composites

Polymers ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 303 ◽  
Author(s):  
Andrea Toldy ◽  
Gábor Szebényi ◽  
Kolos Molnár ◽  
Levente Tóth ◽  
Balázs Magyar ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Impact Resistance ◽  
Fire Performance ◽  
Multiwalled Carbon ◽  
Peak Heat Release Rate ◽  
Flame Retarded ◽  
The Impact

We studied the effect of a multilevel presence of carbon-based reinforcements—a combination of conventional load-bearing unidirectional carbon fiber (CF) with multiwalled carbon nanotubes (CNT) and conductive CNT-containing nonwoven carbon nanofabric (CNF(CNT))—on the fire performance, thermal conductivity, and mechanical properties of reference and flame-retarded epoxy resin (EP) composites. The inclusion of carbon fibers and flame retardant reduced the peak heat release rate (pHRR) of the epoxy resins. The extent to which the nanoreinforcements reduced the pHRR depended on their influence on thermal conductivity. Specifically, high thermal conductivity is advantageous at the early stages of degradation, but after ignition it may lead to more intensive degradation and a higher pHRR; especially in the reference samples without flame retardant. The lowest pHRR (130 kW/m2) and self-extinguishing V-0 UL-94 rating was achieved in the flame-retarded composite containing all three levels of carbon reinforcement (EP + CNF(CNT) + CNT + CF FR). The plasticizing effect of the liquid flame retardant impaired both the tensile and flexural properties; however, it significantly enhanced the impact resistance of the epoxy resin and its composites.

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