Carbon nanotubes- A powerful nano-filler for enhancing the performance properties of polyetherketoneketone composites and adhesives

Marathe, Umesh; Padhan, Meghashree; Bijwe, Jayashree

doi:10.1016/j.compscitech.2021.108813

Cited by 24 publications

(17 citation statements)

References 32 publications

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“…According to this feature, researchers have modified the polymer composite materials to obtain different properties and realize different applications. The polyaryletherketone 2 , 3 group of polymer products is a widely used product in aerospace and oilfield, usually forming polymer composites with metals and organic and inorganic substances. Polyaryletherketone matrix composites have been developed to meet the demands of various applications 4 .…”

Section: Introductionmentioning

confidence: 99%

Mechanical performance of graphenex/poly(ether ketone ketone) composite sheets by hot pressing

Wang

Jia

Pei

et al. 2022

Sci Rep

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Polymer composites are gradually replacing traditional metal materials in the fields of aviation, aerospace, automotive and medicine due to their corrosion resistance, light weight and high strength. Moulding technology and organization morphology of polymer composite are key elements affecting the quality of products and their application, so a vacuum hot pressing process for graphenex/poly(ether ketone ketone) (PEKK) (x = 0%, 2%, 3%, 4%, 5%, 6%) composite powders is explored with particularly designed moulding parameters to achieve high conductive properties and good mechanical properties in graphene/PEKK composite sheet with thickness of 1.25 mm and diameter of 80 mm. The vacuum environment ensures that the graphene is not oxidized by air during hot pressing molding, which is essential for achieving conductive property in the graphene/PEKK composite; The hot pressing temperature of each graphene/PEKK composite powder is higher than glass transition temperature but lower than melting temperature, which ensures the graphene/PEKK composite powders is fully compacted and then graphene is fully lapped in the composite sheet. In addition, the graphene/PEKK composite sheet shows conductive property when the graphene content increases to 3wt%, and then the conductivity of the composites increases and then decreases with a peak value at 5wt% with increasing graphene content. By comparing the mechanical properties and microstructure morphology of the graphene/PEKK composite sheets, it was obtained that graphene content has an obvious effect on the mechanical properties of the composites, e.g., the mechanical properties will be increased as the graphene content increasing when graphene content is more than 3%. The graphene distribution law of the composite material with different graphene contents is analysed using a scanning electron microscope (SEM).

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Section: Introductionmentioning

confidence: 99%

Mechanical performance of graphenex/poly(ether ketone ketone) composite sheets by hot pressing

Wang

Jia

Pei

et al. 2022

Sci Rep

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“…NCAs based on high-performance polymers such as polyetherketoneketone, polyetheretherketone, polyaryletherketone, and nanofillers such as multiwalled carbon nanotubes (MWCNTs), titanium carbide (TiC), silicon carbide (SiC), boron carbide (B 4 C), and so forth have been reported with huge improvements in the past. [4][5][6][7][8][9]17 The literature indicates that epoxy is the most popular matrix for adhesive development. Gupta et al 18 selected the NPs of alumina in varying amounts (0, 0.5, 1, 1.5, and 2 wt %) and shapes (nanorods and nanospheres) in epoxy and reported improvements of 52 and 56% in the lap shear strength (LSS) to pristine epoxy for nanospheres and nanorods, respectively.…”

Section: Introductionmentioning

confidence: 99%

Performance Augmentation of Epoxy Adhesives with TiN Nanoparticles

2022

Self Cite

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In the current study, nanoparticles (NPs) of titanium nitride (50−70 nm) in varying amounts (0−4 wt %) were uniformly suspended in an epoxy solution and then used to cast the films of nanocomposites. The same formulations were used to prepare the lap shear strength joints using stainless-steel coupons with the help of standard molds and then employing the compression molding technique. The nanocomposites films were characterized for their physical properties, thermal stability, friction performance, and scratch hardness, while the lap shear strength of joints prepared using nanocomposites as nanoadhesives was evaluated. The failed surfaces of joints were investigated using scanning electron microscopy (SEM) to understand the failure modes, that is, micro-failure mechanisms, while the cross-sectional surfaces of fractured nanocomposites were investigated using SEM to identify the distribution of NPs. The increase in the contents of NPs in the epoxy led to an almost linear increase in the selected performance properties. The highest (70%) improvement in the lap shear strength was observed with 4 wt % NPs, which was correlated with an increase in the hardness of composites.

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“…The limited role of these cross-linkers is mostly due to the loss of tack and adhesion rather quickly, with a substantial increase in cohesion at higher concentrations. To enhance tack and adhesion without a significant change in cohesion, nanoparticles as fillers are often incorporated to generate composite structures. , …”

Section: Introductionmentioning

confidence: 99%

“…To enhance tack and adhesion without a significant change in cohesion, nanoparticles as fillers are often incorporated to generate composite structures. 7,8 Therefore, to overcome this limitation in current crosslinking technology, it is highly desirable to develop a crosslinker that can not only control the cross-linking density but also enhance or modulate the adhesive properties by physicochemical interaction with the prepolymer. 9 In this regard, polymeric cross-linkers ("macro-cross-linkers") have recently emerged as a promising alternative to small molecular cross-linkers and linear oligomeric cross-linkers as they offer several benefits.…”

Section: Introductionmentioning

confidence: 99%

Aziridine-Capped Poly(ethylene glycol) Brush Copolymers with Tunable Architecture as Versatile Cross-Linkers for Adhesives

Hong

Kwon

et al. 2022

ACS Appl. Polym. Mater.

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Controlling adhesive and cohesive properties in a refined manner is paramount to developing high-performance adhesives. Therefore, developing and implementing cross-linkers have become a major focus in adhesive research, but most conventional cross-linkers are small molecules or oligomers with limited functionality. Herein, a brush copolymer consisting of varying lengths and densities of the aziridine-capped poly(ethylene glycol) (AzPEG) brush, termed P(AzPEG), is presented for use as a multifunctional polymeric cross-linker for carboxylate-containing acrylic adhesives. The density and length of the AzPEG brush, with respect to the total brush, are controlled conveniently by the concentration and molecular weight of the AzPEG acrylate monomer, respectively. In addition, the use of amphiphilic PEG also makes it possible for use in a variety of solvents. Using poly(EHA-co-AA) and poly(EHA-co-BA-co-MMA-co-AA-co-HEMA) as solvent and waterborne acrylic adhesives, respectively, their mechanical and adhesive properties are effectively controlled by P(AzPEG) with varying densities and lengths of the AzPEG brush without the need for a substantial change in concentration. These findings certainly show the advantages of brush copolymer-based cross-linkers for adhesives.

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Carbon nanotubes- A powerful nano-filler for enhancing the performance properties of polyetherketoneketone composites and adhesives

Cited by 24 publications

References 32 publications

Mechanical performance of graphenex/poly(ether ketone ketone) composite sheets by hot pressing

Mechanical performance of graphenex/poly(ether ketone ketone) composite sheets by hot pressing

Performance Augmentation of Epoxy Adhesives with TiN Nanoparticles

Aziridine-Capped Poly(ethylene glycol) Brush Copolymers with Tunable Architecture as Versatile Cross-Linkers for Adhesives

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