Efficient reinforcement of epoxy resin with amine‐rich rigid short‐chain grafted graphene oxide

Shen, Lu; Zhang, Xueqin; Lei, Yifeng; Liang, Mei; Chen, Yang; Chen, Wenbin; Zou, Huawei

doi:10.1002/pc.26186

Cited by 12 publications

(8 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This results in the formation of multiple cross-links throughout the material (Figure B), transforming the liquid resin (a thermoplastic) into a hard, nonmeltable solid (a thermoset). Surface-bound amines can also react with epoxy resin, and this strategy has been leveraged by other groups to achieve enhanced bonding within carbon fabric-, graphene oxide-, and silica-epoxy composites. − …”

Section: Resultsmentioning

confidence: 99%

Polyamine–Diazirine Conjugates for Use as Primers in UHMWPE–Epoxy Composite Materials

Nazir

Musolino

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

Ultra-high-molecular weight polyethylene (UHMWPE) fibers show promise for use in fiber-reinforced polymer composites but have poor interfacial adhesion to the epoxy resin that would serve as the polymer matrix. Here, we describe the development of a diazirine-grafted polyamine that can be used as a topically applied primer for UHMWPE fibers. Activation of the diazirine groups on the primer initiates C−H bond insertion on the polyethylene fiber, leading to strong covalent bonds between the fiber and the polyamine coating. The covalently functionalized surface can then engage in nucleophilic addition reactions with epoxy resinresulting in increased bonding to the epoxy matrix (demonstrated through lap-shear experiments) and increased performance for fiber-reinforced composite materials (demonstrated through lamination rates and short-beam stress measurements).

show abstract

Section: Resultsmentioning

confidence: 99%

Polyamine–Diazirine Conjugates for Use as Primers in UHMWPE–Epoxy Composite Materials

Nazir

Musolino

et al. 2022

ACS Appl. Polym. Mater.

View full text Add to dashboard Cite

show abstract

“…Shen et al effectively reinforced the epoxy resin with amine‐rich rigid short‐linked graphene oxide. [ 41 ] The tensile and flexural strengths of the epoxy composites were increased by 28% and 29%, respectively.…”

Section: Introuductionmentioning

confidence: 99%

Enhance the mechanical properties of epoxy resin reinforced with functionalized graphene oxide nanocomposites prepared by atom transfer radical polymerization

Yang

Ma²,

Liu

et al. 2022

Polymer Composites

View full text Add to dashboard Cite

Inspired by the strengthening effect of nanoparticles and the toughening effect of block polymers, we prepared a block polymer filler with graphene oxide (GO) as the main body by surface initiate atom transfer radical polymerization (SI‐ATRP). In the side groups of the main molecular segment of this block polymer, glycidyl methacrylate (GMA) fragment and N‐(3,4‐bis([tert‐butyldimethylsilyl]oxy)phenethyl)methacrylamide (DOPAmTBDMS) fragment can promote dispersion and toughening respectively. The molecular structure was characterized by Fourier transform infrared and X‐ray photoelectron spectroscopy. After the modified GO was added to the epoxy composite, the mechanical properties of the composite could be significantly improved. The toughness of epoxy composites was enhanced by crack deflection of the matrix. When the added amount of modified GO was 0.25 wt%, the flexural strength reached 151 MPa, which was 37.27% higher than pure epoxy composite. The tensile strength and izod impact strength were increased by 50.56% and 69.89%, respectively. These are attributed to the strengthening and toughening effects of GO and the side groups on it. This research had potential application value in the field of resin fillers and in combination with carbon fiber, metal and other materials.

show abstract

“…The presence of functional groups on the surface of graphene oxide (GO) improves its bonding with the polymer matrix and increases the filler‐matrix interaction. [ 46 ] High interactions between graphene and polymer layers will result in the deposition of layers by polymer matrix and delamination of graphene layers. These layers can absorb energy and prevent the growth of cracks.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and properties of silicone grafted epoxy/acrylonitrile butadiene styrene/graphene oxide nanocomposite with high adhesion strength and thermal stability

2022

View full text Add to dashboard Cite

To improve thermal, mechanical and adhesion properties, epoxy resin was modified with methyl phenyl silicone (MPS), acrylonitrile butadiene styrene (ABS) and graphene oxide (GO). In order to increase compatibility and stability, MPS intermediate was grafted on epoxy resin through condensation reaction. Transmission electron microscopy images showed well dispersion of GO particles in the system proving successfully preparation of the MPS grafted epoxy/ABS/GO nanocomposite. Single lap shear strength for steel‐epoxy/carbon fiber composite joint in sample containing 15% MPS and 2% ABS improved up to 108% compared to neat epoxy. Such an improvement occurred when only 5% MPS, 2% ABS and 0.1% GO were used showing GO could decrease required content of modifiers in this case. Tensile strength of sample containing 5% MPS and 2% ABS was 49.89 MPa and it reached 55.23 MPa by adding 0.1% GO while it was 37.12 MPa in pure epoxy. Nanocomposite modified sample had a residual char of 20 wt%. at 600°C and increment of 30°C in initial degradation temperature and 7°C in maximum degradation temperature compared to pure epoxy. These finding beside 23% increasing in calculated activation energy using Kessinger's and FWO method's proved significantly improved thermal stability of modified epoxy resin. Scanning electron microscope images of fractured surface of specimens showed micro size domains obtained by phase separation cause toughness improvement and crack energy absorption.

show abstract

Efficient reinforcement of epoxy resin with amine‐rich rigid short‐chain grafted graphene oxide

Cited by 12 publications

References 42 publications

Polyamine–Diazirine Conjugates for Use as Primers in UHMWPE–Epoxy Composite Materials

Polyamine–Diazirine Conjugates for Use as Primers in UHMWPE–Epoxy Composite Materials

Enhance the mechanical properties of epoxy resin reinforced with functionalized graphene oxide nanocomposites prepared by atom transfer radical polymerization

Synthesis, characterization, and properties of silicone grafted epoxy/acrylonitrile butadiene styrene/graphene oxide nanocomposite with high adhesion strength and thermal stability

Contact Info

Product

Resources

About