Strategy to Enhance Conductivity of Polystyrene/Graphene Composite Foams via Supercritical Carbon Dioxide Foaming Process

2018 ◽  
Vol 142 ◽  
pp. 52-63 ◽  
Author(s):  
Wei Xiao ◽  
Xia Liao ◽  
Qiuyue Jiang ◽  
Yuan Zhang ◽  
Jia Chen ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Graphene Composite ◽  
Foaming Process ◽  
Composite Foams ◽  
Supercritical Carbon

Foaming of CNTs/PMMA Nanocomposite with Supercritical Carbon Dioxide

2012 ◽  
Vol 508 ◽  
pp. 61-64 ◽  
Author(s):  
Yuan Lu Xiong ◽  
Qiang Shen ◽  
Huan Yuan ◽  
Fei Chen ◽  
Guo Qiang Luo
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Cell Density ◽  
Cell Structure ◽  
Cell Distribution ◽  
Emi Shielding ◽  
Blowing Agent ◽  
Foaming Process ◽  
Nanocomposite Foams ◽  
Supercritical Carbon

The CNTs/PMMA Nanocomposite Foams Are a Kind of Novel Multifunctional Foams which Have a Potential Application for Lightweight Conductive and EMI Shielding Materials. In this Work, the CNTs/PMMA Nanocomposite Foams with Different CNTs Contents from 1wt.% to 10wt.% Were Prepared at a Temperature Range of 50-140 °C with Supercritical Carbon Dioxide as Blowing Agent. The Results Suggest that the Fully Heterogeneous Nucleation Is Achieved due to the Contribution of Well-Dispersed CNTs in PMMA. The CNTs/PMMA Nanocomposite Foams Exhibit a Uniform Cell Distribution, and the Cell Density Is Two Orders of Magnitude Higher than that of PMMA Foams. The Cell Size and Cell Density of CNTs/PMMA Nanocomposite Foams Could Be Controlled by Adjusting the Foaming Process and CNTs Contents. It Is Also Suggested that the Foaming Process Plays an Important Role on the Cell Structure Rather than that of CNTs Content when it Is Higher than 1wt.%.

scholarly journals Supercritical Carbon Dioxide-Assisted Process for Well-Dispersed Silicon/Graphene Composite as a Li ion Battery Anode

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Sang Ha Lee ◽  
Sengyoen Park ◽  
Min Kim ◽  
Dohyeon Yoon ◽  
Chalathorn Chanthad ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Supercritical Carbon Dioxide ◽  
Li Ion Battery ◽  
Graphene Composite ◽  
Li Ion ◽  
Battery Anode ◽  
Supercritical Carbon

Foaming of Polystyrene with Supercritical Carbon Dioxide

2013 ◽  
Vol 669 ◽  
pp. 366-370
Author(s):  
Wei Hua Ma ◽  
Jie Ding ◽  
Qin Zhong
Keyword(s):  
Carbon Dioxide ◽  
Glass Transition ◽  
Supercritical Carbon Dioxide ◽  
General Purpose ◽  
High Impact ◽  
Foaming Process ◽  
Cell Nucleation ◽  
Cell Densities ◽  
Foaming Temperature ◽  
Supercritical Carbon

General Purpose Polystyrene (GPPS) and High Impact Polystyrene (HIPS) were foamed with supercritical carbon dioxide in the batch foaming process. Foaming behaviors of GPPS and HIPS were investigated. The cell diameters and cell densities of GPPS and HIPS vary strangely with foaming conditions and can be explained by the classical nucleation. The competition between cell growth and cell nucleation is used to explain these strange foaming behaviors. The glass transition temperature (Tg) almost remains constant with the foaming temperature rising.

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