In situ reduction of graphene oxide to improve the thermal and wettability properties of urea-melamine-modified phenol formaldehyde resin composites

2018 ◽  
Vol 6 (2) ◽  
pp. 025302 ◽  
Author(s):  
Cao Wu ◽  
Zhaofeng Chen ◽  
Fei Wang ◽  
Ya Hu ◽  
Enhui Wang ◽  
...  
Nanoscale ◽  
2019 ◽  
Vol 11 (20) ◽  
pp. 10088-10096 ◽  
Author(s):  
Na Yang ◽  
Xingxiang Ji ◽  
Juanjuan Sun ◽  
Yu Zhang ◽  
Qinghua Xu ◽  
...  

Highly flexible and chiral nematic phenol formaldehyde resin (PFR)/graphene oxide (GO) composite films are prepared by CNC-templating, which can be forged into objects with predefined shapes and show good shape recovery capability by selective treatment with aldehydes.


Nanomaterials ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 1242 ◽  
Author(s):  
Liu ◽  
Huang ◽  
Xiong ◽  
Wang ◽  
Chen ◽  
...  

Carbon source precursors for high-grade, clean, and low-carbon refractories were obtained by in situ exfoliation of flake graphite (FG) and phenol–formaldehyde resin (PF) composites with three-roll milling (TRM) for the fabrication of graphite nanoplatelets. In addition, by using Ni(NO3)2·6H2O as a catalyst in the pyrolysis process, multidimensional carbon nanostructures were obtained with coexisting graphite nanoplatelets (GNPs), glassy carbon (GC), and carbon nanotubes (CNTs). The resulting GNPs (exfoliated 16 times) had sizes of 10–30 μm, thicknesses of 30–50 nm, and could be uniformly dispersed in GC from the PF pyrolysis. Moreover, Ni(NO3)2·6H2O played a key role in the formation and growth of CNTs from a catalytic pyrolysis of partial PF with the V–S/tip growth mechanisms. The resulting multidimensional carbon nanostructures with GNPs/GC/CNTs are attributed to the shear force of the TRM process, pyrolysis, and catalytic action of nitrates. This method reduced the production costs of carbon source precursors for low-carbon refractories, and the precursors exhibited excellent performances when fabricated on large scales.


2017 ◽  
Vol 94 (6) ◽  
pp. 486-499 ◽  
Author(s):  
Jolanta Pulit-Prociak ◽  
Małgorzata Kabat ◽  
Jarosław Chwastowski ◽  
Anita Staroń ◽  
Paweł Staroń ◽  
...  

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