A flame retardant rigid polyurethane foam system including functionalized graphene oxide

2018 ◽  
Vol 40 (S2) ◽  
pp. E1274-E1282 ◽  
Author(s):  
Ming Gao ◽  
Junfei Li ◽  
Xuan Zhou
Keyword(s):  
Graphene Oxide ◽  
Flame Retardant ◽  
Polyurethane Foam ◽  
Rigid Polyurethane Foam ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide

scholarly journals Thermal Degradation and Flame Retardant Mechanism of the Rigid Polyurethane Foam Including Functionalized Graphene Oxide

Polymers ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 78 ◽  
Author(s):  
Xuexi Chen ◽  
Junfei Li ◽  
Ming Gao
Keyword(s):  
Graphene Oxide ◽  
Thermal Degradation ◽  
Flame Retardant ◽  
Polyurethane Foam ◽  
Main Stage ◽  
Rigid Polyurethane Foam ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Limiting Oxygen Index ◽  
Char Layer

A flame retardant rigid polyurethane foam (RPUF) system containing functionalized graphene oxide (fGO), expandable graphite (EG), and dimethyl methyl phosphonate (DMMP) was prepared and investigated. The results show that the limiting oxygen index (LOI) of the flame-retardant-polyurethane-fGO (FRPU/fGO) composites reached 28.1% and UL-94 V-0 rating by adding only 0.25 g fGO. The thermal degradation of FRPU samples was studied using thermogravimetric analysis (TG) and the Fourier transform infrared (FT-IR) analysis. The activation energies (Ea) for the main stage of thermal degradation were obtained using the Kissinger equation. It was found that the fGO can considerably increase the thermal stability and decrease the flammability of RPUF. Additionally, the Ea of FRPU/fGO reached 191 kJ·mol−1, which was 61 kJ·mol−1 higher than that of the pure RPUF (130 kJ·mol−1). Moreover, scanning electron microscopy (SEM) results showed that fGO strengthened the compactness and the strength of the “vermicular” intumescent char layer improved the insulation capability of the char layer to gas and heat.

scholarly journals Covalently-functionalized graphene oxide via introduction of bifunctional phosphorus-containing molecules as an effective flame retardant for polystyrene

RSC Advances ◽  
2018 ◽  
Vol 8 (44) ◽  
pp. 24993-25000 ◽  
Author(s):  
Kang Dai ◽  
Shuai Sun ◽  
Wenbin Xu ◽  
Yuan Song ◽  
Zhenzhen Deng ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Functionalized Graphene ◽  
Functionalized Graphene Oxide ◽  
Phosphorus Containing

A covalently-functionalized graphene oxide with excellent flame retardancy was successfully prepared.

Preparation of dual-functionalized graphene oxide for the improvement of the thermal stability and flame-retardant properties of polysiloxane foam

2018 ◽  
Vol 42 (16) ◽  
pp. 13873-13883 ◽  
Author(s):  
Tianlu Xu ◽  
Chunling Zhang ◽  
Peihong Li ◽  
Xueyan Dai ◽  
Lijie Qu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Graphene Oxide ◽  
Flame Retardant ◽  
Oxygen Index ◽  
Functionalized Graphene ◽  
Foam Material ◽  
Functionalized Graphene Oxide ◽  
Limiting Oxygen Index ◽  
Flame Retardant Properties ◽  
Combustible Materials

Polysiloxane foam (PSF) is a foam material with outstanding performance. However, the limiting oxygen index (LOI) of pure PSF is only 22.0 vol%, which can be attributed to combustible materials.

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