Enhancing adhesion strength via synergic effect of atmospheric pressure plasma and silane coupling agent

Jung, Unseok; Sang Kim, Yoon; Suhr, Jonghwan; Lee, Hun-su; Kim, Jaewoo

doi:10.1016/j.apsusc.2023.158227

Cited by 8 publications

(4 citation statements)

References 36 publications

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“…The improved adhesion was explained by the chemical interaction between the adhesive and oxygen-containing functional groups on the polymer surface. The large concentration of oxygen and no nitrogen on the polymer surface after the plasma treatment indicates that the effluent ambient air caused quenching of the nitrogen molecular metastables, similar to the experimental setup used by Kosmachev et al [20], who also found a minimal concentration of Jung et al [22] treated a carbon fiber-reinforced thermoplastic polymer with atmospheric pressure plasma sustained in nitrogen by a dielectric barrier discharge operating at the frequency of 13.56 MHz and voltage of 13.5 kV. The treatment time was 2 min.…”

Section: High-pressure Plasmassupporting

confidence: 58%

“…The nitric oxides and radicals (predominantly O, OH, and H) interact chemically with the carbon fibers and form polar surface functional groups (Figure 4b). Jung et al [22] treated a carbon fiber-reinforced thermoplastic polymer with atmospheric pressure plasma sustained in nitrogen by a dielectric barrier discharge operating at the frequency of 13.56 MHz and voltage of 13.5 kV. The treatment time was 2 min.…”

Section: High-pressure Plasmasmentioning

confidence: 99%

“…The appearance of the fragments was not reported in the articles analyzed in Section 3 of this paper, so it is impossible to quantify their influence on the adhesion properties. The ratio between adhesion after and before the plasma treatment (adhesion increase) versus the treatment time [13,[19][20][21][22][23]27,30,33,34,39].…”

Section: Correlations and Paradoxesmentioning

confidence: 99%

“…Figure 10. The ratio between adhesion after and before the plasma treatment (adhesion increase) versus the treatment time [13,[19][20][21][22][23]27,30,33,34,39]. Figure 10.…”

Section: Figure 10mentioning

confidence: 99%

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Surface Modification of Polymers by Plasma Treatment for Appropriate Adhesion of Coatings

Primc,

Mozetič

2024

Materials

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In this study, recent advances in tailoring the surface properties of polymers for the optimization of the adhesion of various coatings by non-equilibrium gaseous plasma are reviewed, and important findings are stressed. Different authors have used various experimental setups and reported results that scatter significantly and are sometimes contradictory. The correlations between the processing parameters and the adhesion are drawn, and discrepancies are explained. Many authors have explained improved adhesion with the adjustment of the surface free energy or wettability of the polymer substrate and the surface tension of liquids used for the deposition of thin films. The adhesion force between the polymer substrate and the coating does not always follow the evolution of the surface wettability, which is explained by several effects, including the aging effects due to the hydrophobic recovery and the formation of an interlayer rich in loosely bonded low molecular weight fragments.

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Section: High-pressure Plasmassupporting

confidence: 58%

Section: High-pressure Plasmasmentioning

confidence: 99%

Section: Correlations and Paradoxesmentioning

confidence: 99%

“…Figure 10. The ratio between adhesion after and before the plasma treatment (adhesion increase) versus the treatment time [13,[19][20][21][22][23]27,30,33,34,39]. Figure 10.…”

Section: Figure 10mentioning

confidence: 99%

See 2 more Smart Citations

Surface Modification of Polymers by Plasma Treatment for Appropriate Adhesion of Coatings

Primc,

Mozetič

2024

Materials

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Enhanced mechanical property and flame retardancy of halogen‐free PE/EVA composites through crosslinking and carbon fiber inclusion

Du,

Chen,

Chen

et al. 2024

Polymer Composites

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Due to the exceptional flame retardancy, environmental protection, cost‐effectiveness, and ease of processing, halogen‐free flame‐retardant polyethylene (PE) composites are attracting wide attention. However, the addition of halogen‐free flame retardants usually leads to significantly decreased mechanical properties of PE composites, which greatly limits its application. Herein, we report a halogen‐free flame‐retardant PE/ethylene‐vinyl acetate copolymer composite (PE/EVA) with excellent flame retardancy and mechanical properties by combining compatibilizer, crosslinking agent, and carbon fiber. The presence of compatibilizer not only improves the compatibility of halogen‐free flame retardants and matrix, but also interacts with the crosslinking agent to form a cladding structure on the surface of carbon fiber. The enhanced interaction between carbon fiber surface and matrix then results in significantly enhanced flame retardancy and mechanical properties of the composite. Specifically, adding 4 phr compatibilizer, 0.5 phr crosslinking agent, and 10 phr carbon fiber will lead to the halogen‐free flame‐retardant PE/EVA composite with a UL‐94 V‐1 level, limiting oxygen index of 27.1, and an increased tensile strength by 84.02% reaching 19.12 MPa. Moreover, further carbon fiber surface modification can further enhance the flame retardancy of the composite probably due to a synergistic flame‐retardant effect caused by the surface modified nitrogen and silicon elements. As a result, the composite achieves UL‐94 V‐0 level and the limiting oxygen index of 27.7 with well‐retained high tensile strength of 15.19 MPa. This work provides a practical strategy for enhancing the flame retardancy and mechanical property of PE‐based composite simultaneously.Highlights Compatibilizer interacts with crosslinking agent to form a cladding structure on the surface of carbon fiber. Crosslinking agent promotes the formation of chemical bonds between modified carbon fiber, compatibilizer, and matrix. Carbon fiber surface modification can enhance the flame retardancy of the composite due to the synergistic flame‐retardant effect.

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DeoxyriboNucleic acid‐enhanced carbon nanotube dispersed epoxy resin composites: Mechanical and thermal properties study

Li,

Peng,

Zhong

et al. 2024

Polymer Composites

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The homogeneous dispersion of multi‐walled carbon nanotubes (MWCNTs) in a polymer matrix significantly affects the overall properties of composites. In this study, MWCNTs/epoxy (EP) composites were prepared using DeoxyriboNucleic acid (DNA) as a dispersant. The MWCNTs were uniformly dispersed in a phenalkamine curing agent and crosslinked with an epoxy resin matrix. The non‐covalent functionalization of DNA‐dispersed MWCNTs was confirmed by characterizing both the pristine and DNA‐modified MWCNTs. Additionally, the dispersion state and stability of MWCNTs in the curing agent solution were evaluated. Tensile strength and single‐lap‐shear (SLS) were employed to assess the mechanical properties of the composites. The results indicated that the DNA‐dispersed MWCNTs composites exhibited superior strength and toughness, with tensile and shear strengths of 46.81 and 19.64 MPa, respectively, at optimal ratios. These values represent increases of 68.38% and 50.96% compared to pure EP. Dynamic mechanical thermal analysis (DMTA) revealed that the energy storage modulus of DNA‐dispersed MWCNTs/EP composites increased to 2722 MPa, a 24.7% enhancement over pure EP. Furthermore, the thermal properties of the composites were thoroughly investigated. Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) showed that the initial decomposition temperature of the DNA‐assisted dispersed composites rose to 330°C. The macromolecular relaxation of the EP materials occurred at higher temperatures, leading to an increased glass transition temperature.Highlights DNA was used to disperse MWCNTs in phenalkamine curing agent. MWCNTs/EP composites were made by crosslinking DNA‐dispersed MWCNTs with epoxy resin. DNA‐dispersed MWCNTs boosted tensile and lap shear strength. Thermal properties improved due to DNA‐dispersed MWCNTs, and increased the energy storage modulus of the composite.

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Enhancing adhesion strength via synergic effect of atmospheric pressure plasma and silane coupling agent

Cited by 8 publications

References 36 publications

Surface Modification of Polymers by Plasma Treatment for Appropriate Adhesion of Coatings

Surface Modification of Polymers by Plasma Treatment for Appropriate Adhesion of Coatings

Enhanced mechanical property and flame retardancy of halogen‐free PE/EVA composites through crosslinking and carbon fiber inclusion

DeoxyriboNucleic acid‐enhanced carbon nanotube dispersed epoxy resin composites: Mechanical and thermal properties study

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