Graphene oxide‐containing isocyanate‐based polyimide foams: Enhanced thermal stability and flame retardancy

2021 ◽  
pp. 51012
Author(s):  
Mustafa Çakir ◽  
Volkan Kılıç ◽  
Yalçın Boztoprak ◽  
Fadime Karaer Özmen
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Flame Retardancy

scholarly journals PREPARATION OF IRON- REDUCED GRAPHENE OXIDE/ EPOXY RESIN COMPOSITE AND ITS FLAME RETARDANCY AND THERMAL STABILITY

10.6036/10327 ◽  
2022 ◽  
Vol 97 (1) ◽  
pp. 98-103
Author(s):  
XIAN WANG ◽  
JINLONG ZHUO ◽  
TIANQING XING ◽  
Xingran Wang
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Iron Powder ◽  
Flame Retardancy ◽  
Limiting Oxygen Index ◽  
Cone Calorimeter Test ◽  
Industrial Manufacture ◽  
Ul 94

In order to reduce flammability, smoke release and enhance thermal stability of epoxy resin (EP), iron powder is mixed with graphene oxide/ epoxy resin (GO/EP) composite by mechanical blending. The combustion performance of composite material is investigated through limiting oxygen index (LOI), Underwriters Laboratory (UL)-94 test, and cone calorimeter test (CCT). Thermogravimetric-Fourier transform infrared spectroscopy (TG-FTIR) and scanning electron microscope (SEM) are also used to explore the mechanism of flame retardancy and smoke suppression. Results show that, with the addition of 0.5% mass fraction of GO and the corresponding iron powder combination (EP3 sample), the LOI value can achieve 32.5% while reaching the UL-94 V0 rating. Compare with EP0, the peaks of heat release rate, smoke production rate, and smoke factor values of EP3 are decreased by 42%, 60%, and 50%, respectively. The char and TG-FTIR data of EP3 reveal that it has a more compact structure, good thermal stability, and produce fewer toxic gases and smoke. Reduction of GO could inhibit the degradation of EP, and iron catalyzes the formation of carbonaceous char on the surface. Thus, the thermal stability and flame retardancy of EP are improved significantly. This study provides a suitable way to prepare graphene/EP composites that contain iron catalyst and can be extended to the industrial manufacture of flame retardant polymer composites. Keywords: iron powder; epoxy resin; graphene oxide; flame retardant; thermal stability

Solid acid-reduced graphene oxide nanohybrid for enhancing thermal stability, mechanical property and flame retardancy of polypropylene

RSC Advances ◽  
2015 ◽  
Vol 5 (51) ◽  
pp. 41307-41316 ◽  
Author(s):  
Bihe Yuan ◽  
Lei Song ◽  
Kim Meow Liew ◽  
Yuan Hu
Keyword(s):  
Mechanical Property ◽  
Thermal Stability ◽  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Flame Retardancy ◽  
Solid Acid ◽  
Radical Trapping ◽  
Trapping Effect ◽  
Reduced Graphene

PMoA enhances the radical trapping effect of graphene.

Preparation of a silica nanospheres/graphene oxide hybrid and its application in phenolic foams with improved mechanical strengths, friability and flame retardancy

RSC Advances ◽  
2015 ◽  
Vol 5 (121) ◽  
pp. 99907-99913 ◽  
Author(s):  
Xiaoyan Li ◽  
Zhengzhou Wang ◽  
Lixin Wu
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Flame Retardancy ◽  
Silica Nanospheres ◽  
Mechanical Strengths

A silica nanospheres/graphene oxide hybrid (SGO) was synthesized, and it is found that SGO can greatly improve the mechanical strengths, thermal stability and flame retardancy of phenolic foams.

One-step in situ synthesis of a novel α-zirconium phosphate/graphene oxide hybrid and its application in phenolic foam with enhanced mechanical strength, flame retardancy and thermal stability

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74903-74912 ◽  
Author(s):  
Xiaoyan Li ◽  
Zhengzhou Wang ◽  
Lixin Wu ◽  
Tsungyen Tsai
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Mechanical Strength ◽  
Flame Retardancy ◽  
Zirconium Phosphate ◽  
In Situ Synthesis ◽  
Phenolic Foam ◽  
One Step ◽  
Mechanical Strengths

A novel α-zirconium phosphate/graphene oxide hybrid was synthesized, and its incorporation into phenolic foam can greatly improve mechanical strengths, thermal stability and flame retardancy of the foam.

A novel nanosilica/graphene oxide hybrid and its flame retarding epoxy resin with simultaneously improved mechanical, thermal conductivity, and dielectric properties

2015 ◽  
Vol 3 (18) ◽  
pp. 9826-9836 ◽  
Author(s):  
Rui Wang ◽  
Dongxian Zhuo ◽  
Zixiang Weng ◽  
Lixin Wu ◽  
Xiuyan Cheng ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Thermal Stability ◽  
Graphene Oxide ◽  
Dielectric Properties ◽  
Epoxy Resin ◽  
Flame Retardancy

A novel nanosilica/graphene oxide hybrid was prepared, which can simultaneously improve the typical properties (dielectric, thermal conductivity, thermal stability, and mechanical properties) and flame retardancy of epoxy resin.

scholarly journals Covalently functionalized graphene oxide wrapped by silicon–nitrogen-containing molecules: preparation and simultaneous enhancement of the thermal stability, flame retardancy and mechanical properties of epoxy resin nanocomposites

RSC Advances ◽  
2020 ◽  
Vol 10 (24) ◽  
pp. 13949-13959
Author(s):  
Yanlong Sui ◽  
Lijie Qu ◽  
Peihong Li ◽  
Xueyan Dai ◽  
Qiangsheng Fang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Graphene Oxide ◽  
Epoxy Resin ◽  
Polymer Matrix ◽  
Flame Retardancy ◽  
Flame Retardance ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Epoxy Resin Nanocomposites

This study provided a modification strategy for improving the flame retardance of graphene and its derivatives in a polymer matrix.

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