Liquid crystal functionalization of graphene nanoplatelets for improved thermal and mechanical properties of silicone resin composites

Gui, Dayong; Yu, Si; Xiong, Wentao; Cai, Xueqing; Liu, Canqun; Liu, Jianhong

doi:10.1039/c6ra01858k

Cited by 17 publications

(4 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…a), different stages of weight loss can be found in the thermal response of GONPs. The initial weight lost in the range of 25–180°C is due to the removal of physically absorbed water on the surface of GONPs . An intensive weight lost above 180°C is probably related to the decomposition of unstable oxygen‐containing functional groups (such as hydroxyl, carbonyl, and carboxylic) onto the GONP surface .…”

Section: Resultsmentioning

confidence: 99%

On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

et al. 2018

View full text Add to dashboard Cite

Effects of GONP modification and S‐GONPs loading on the mechanical properties of UBF/epoxy composite were investigated. The introduction of the silane organic chains on the surface of GONPs was evaluated by FTIR, STA, and Raman spectroscopy. Out of the specimens, the highest values in mechanical strengths were obtained at 0.4 wt% S‐GONPs. The tensile, flexural, and compressive strengths of this specimen were 16%, 47%, 51% greater, respectively, than that of UBF/epoxy composite. Improvements in the mechanical moduli were also obtained. It was also found that silane modification of GONPs had a significant effect on the mechanical properties of the specimens. Microscopic studies showed a better interfacial bonding between UBF and matrix in nanofiller‐filled specimens. The experimental results for compressive strength and modulus were compared with an Euler–Bernoulli beam‐based model. The model predictions were in very good agreement with experimental results. POLYM. COMPOS., 39:E2472–E2482, 2018. © 2018 Society of Plastics Engineers

show abstract

Section: Resultsmentioning

confidence: 99%

On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

et al. 2018

View full text Add to dashboard Cite

show abstract

“…This illustrates that the rGO and polysilane could improve the thermal transport, nevertheless the enhancement of thermal conductivity was not as remarkably effective as SR/GO‐Si‐1.95. The reasons are manifold: First, the uniform dispersion GO‐Si provided enough contact area between GO‐Si and SR. Second, with the increase of GD with the GO‐Si containing more polysilane leading, the polysilane grafted on GO could form chemical bonds or interactions with SR, which contribute to form a more thermal transfer network and reduce the thermal resistance of interface between GO‐Si and SR . In other literature studies, the thermal conductivity of the SR composite with the addition of 8 wt% of graphene nanoplatelets improved from 0.16 to 0.26 W·m −1 ·K −1.…”

Section: Resultsmentioning

confidence: 82%

Radiation synthesis of polysilane‐modified graphene oxide for improving thermal conductivity and mechanical properties of silicone rubber

Dai

Jiao

et al. 2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Functionalized graphene oxide (named GO-Si) was synthesized with graphene oxide and triethoxyvinylsilane (TEVS) using tetrahydrofuran solution by γ-ray irradiation. TEVS was successfully covered onto GO sheets, and the polysilane content on GO-Si was increased upon increasing the absorbed dose. The structures of GO-Si were verified by atomic force microscopy, Fourier transform infrared spectroscopy, and X-ray photoelectron spectroscopy. The resultant GO-Si was dispersed into α,ω-dihydroxypolydimethylsiloxane to prepare room temperature vulcanized silicone rubber composites (named SR/GO-Si) by solution casting. The dispersion of GO-Si was more uniform than that of GO. Compared to that of pure SR, the thermal conductivity of SR/GO-Si-1.95 composites was increased 1.5-fold, and its tensile strength and elongation at break increased 78.6 and 71.4%, respectively. It was expected that SR/GO-Si would have potential application as the thermal interface material.

show abstract

“…Hierarchical structures were created by growing in situ SiO 2 nanoparticles on reduced G oxide (rGO) nanoplatelets that had been non-covalently functionalized. These were discovered to serve as a reinforcing agent for the matrix made of hydrogenated nitrile butadiene rubber, significantly resulting in a significant improvement in both the static and dynamic mechanical properties [95][96].…”

Section: Functionalization With Polymers Drugs and Biomoleculesmentioning

confidence: 99%

Surface Functionalization Reactions of Graphene-Based Nanostructure and Their Practical Application

Kumari,

Bhandari

2024

Nanotechnology and Nanomaterials

View full text Add to dashboard Cite

Graphene (G) has captured the attention of scientists and researchers due to its remarkable electronic, structural, optical, and mechanical properties. While pristine G has been used for various desirable applications requiring high electrical conductivity, there is also a demand for altered or functionalized versions of G, such as G oxide, reduced G, and other functionalized variants, in numerous other applications. The structural alteration of G through chemical functionalization unveils a multitude of possibilities for adjusting its configuration, and various chemical and physical functionalization techniques have been explored to enhance G’s stability and adaptability. Functionalization allows the customization of graphene’s properties, such as electronic, chemical, and mechanical characteristics, to suit specific applications. This chapter highlights the functionalization of graphene-based nanostructure, encompassing both covalent and non-covalent approaches, for a wide range of applications as well as for addressing current challenges and for outlining potential future research directions concerning surface functional modification for G and graphene oxide (GO).

show abstract

Liquid crystal functionalization of graphene nanoplatelets for improved thermal and mechanical properties of silicone resin composites

Abstract: A liquid crystalline molecule, polyurethane-imide (PUI), was used to functionalize graphene nanoplatelets (GNS) via covalent bond and π–π interactions.

Cited by 17 publications

References 37 publications

On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

On the mechanical behavior of basalt fiber/epoxy composites filled with silanized graphene oxide nanoplatelets

Radiation synthesis of polysilane‐modified graphene oxide for improving thermal conductivity and mechanical properties of silicone rubber

Surface Functionalization Reactions of Graphene-Based Nanostructure and Their Practical Application

Contact Info

Product

Resources

About