Flame retardancy of hollow glass microsphere/rigid polyurethane foams in the presence of expandable graphite

2008 ◽  
Vol 109 (3) ◽  
pp. 1935-1943 ◽  
Author(s):  
Xiang-Cheng Bian ◽  
Jian-Hua Tang ◽  
Zhong-Ming Li
Keyword(s):  
Flame Retardancy ◽  
Polyurethane Foams ◽  
Glass Microsphere ◽  
Expandable Graphite ◽  
Hollow Glass Microsphere ◽  
Hollow Glass ◽  
Rigid Polyurethane Foams

scholarly journals Structure and Flame-Retardant Actions of Rigid Polyurethane Foams with Expandable Graphite

Polymers ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 686 ◽  
Author(s):  
Yongjun Chen ◽  
Yuanfang Luo ◽  
Xiaohui Guo ◽  
Lijuan Chen ◽  
Tiwen Xu ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
Photoelectron Spectroscopy ◽  
Oxygen Index ◽  
Optical Microscope ◽  
Carbon Layer ◽  
Polyurethane Foams ◽  
Limit Oxygen Index ◽  
Expandable Graphite ◽  
Rigid Polyurethane Foams ◽  
Blending Method

In this paper, rigid polyurethane foams that were filled with expandable graphite (RPUF/EG) composites were prepared by the liquid blending method, and then the structure and flame retardancy performance of materials were investigated through optical microscope, scanning electron microscope, limit oxygen index, cone calorimeter, thermogravimetric analysis coupled to fourier transform infrared spectrum, and X-ray photoelectron spectroscopy. The results showed that a large number of EG could be good to the exhibition of flame retardancy of RPUF, where the optimal material was found at loading 15 phr EG that showed an increased limit oxygen index value and a decreased calorific or fuming value. TGA coupled FTIR and XPS revealed that EG could disassembled before RPUF under heating treatment, and it could form a pyknotic and enahnced residual carbon layer on RPUF surface after the fire, which restricted the transfer of gas, like oxygen or heat into PU matrix, finally resulting in the promotion of flame retardancy of RPUF.

Flame retardancy of different-sized expandable graphite particles for high-density rigid polyurethane foams

2006 ◽  
Vol 55 (8) ◽  
pp. 862-871 ◽  
Author(s):  
Lei Shi ◽  
Zhong-Ming Li ◽  
Bang-Hu Xie ◽  
Jian-Hua Wang ◽  
Chun-Rong Tian ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
Polyurethane Foams ◽  
High Density ◽  
Expandable Graphite ◽  
Graphite Particles ◽  
Rigid Polyurethane Foams

scholarly journals Preparation and Characterization of Furan–Matrix Composites Blended with Modified Hollow Glass Microsphere

Polymers ◽  
2020 ◽  
Vol 12 (7) ◽  
pp. 1480
Author(s):  
Yizhe Ma ◽  
Ying Du ◽  
Jin Zhao ◽  
Xubo Yuan ◽  
Xin Hou
Keyword(s):  
Thermal Conductivity ◽  
Thermal Insulation ◽  
Flame Retardancy ◽  
Particle Dispersion ◽  
Glass Microsphere ◽  
Resin Matrix ◽  
Hollow Glass Microsphere ◽  
Limiting Oxygen Index ◽  
Hollow Glass ◽  
Furan Resin

In this study, a new class of thermal insulation composites was prepared by blending a modified hollow glass microsphere (HGM) with furan resin. The particle dispersion between the microparticles and resin matrix was improved using 3-methacryloxypropyltrimethoxy silane (KH-570). Furthermore, the structure and morphology of the modified HGM were characterised by Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and scanning electron microscopy (SEM). In addition, the effects of the modified HGM on the thermal insulation, flame retardancy, and thermal properties of the composites were investigated. The thermal conductivity of the composites was lower than that of the native furan resin. The minimum thermal conductivity of the composites was 0.0274 W/m·K; the flame retardancy of the composites improved, and the limiting oxygen index become a maximum of 31.6%, reaching the refractory material level. Furthermore, the thermal analysis of the composites demonstrated enhanced thermal stability. This study demonstrates that the composite material exhibited good thermal insulation performance and flame retardancy and that it can be applied in the field of thermal insulation.

Effect of titanium doping on the compositional homogeneity of hollow glass microsphere

2017 ◽  
Vol 458 ◽  
pp. 52-60 ◽  
Author(s):  
Fang Li ◽  
Jing Li ◽  
Jianhong Feng ◽  
Zhanwen Zhang ◽  
Meifang Liu ◽  
...  
Keyword(s):  
Glass Microsphere ◽  
Hollow Glass Microsphere ◽  
Hollow Glass ◽  
Titanium Doping ◽  
Compositional Homogeneity

A facile strategy to fabricate microencapsulated expandable graphite as a flame-retardant for rigid polyurethane foams

2015 ◽  
Vol 132 (31) ◽  
pp. n/a-n/a ◽  
Author(s):  
Xiao-Liang Zhang ◽  
Hong-Ji Duan ◽  
Ding-Xiang Yan ◽  
Li-Quan Kang ◽  
Wei-Qin Zhang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Polyurethane Foams ◽  
Expandable Graphite ◽  
Rigid Polyurethane Foams
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