Significant slowdown of plasma-optimized surface energy deactivation by vacuum sealing for efficient adhesive bonding

Shin, Yongsoon; Qiao, Yao; Canfield, Nathan L.; Yu, Zeyang; Meyer, Harry M.; Merkel, Daniel R.; Nickerson, Ethan; Kanbargi, Nihal; Ortiz, Ángel L.; Naskar, Amit K.; Simmons, Kevin L.

doi:10.1016/j.compositesb.2022.110001

Cited by 18 publications

(4 citation statements)

References 39 publications

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“…Each sample was measured five times to obtain the average value. A detailed process was discussed in our previous manuscript 31 …”

Section: Methodsmentioning

confidence: 99%

“…A detailed process was discussed in our previous manuscript. 31 The dynamic mechanical properties of the adhesive were analyzed with a TA instrument RSA-G2 solids analyzer. The storage modulus (G 0 ) and loss modulus (G 00 ) were recorded in the temperature range from À50 C to 200 C with a temperature increasing step of 3 C min À1 and 1 Hz frequency.…”

Section: Adhesive Characterizationmentioning

confidence: 99%

See 1 more Smart Citation

Acrylonitrile‐butadiene‐lignin thermoplastic rubber adhesive for enhanced metal‐to‐metal joining

Yu,

Kanbargi,

Gupta

et al. 2024

Polymer Composites

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With the growing requirement for lightweight structural materials in automotive, aerospace, and infrastructure applications, multi‐material joints made with adhesive have attracted intense research interest. Commercial thermoset adhesives are one‐time cures, and difficult to disassemble the bonded components for repair and recycling. Our prior work with a thermoplastic acrylonitrile‐butadiene‐lignin rubber (ABL) addresses this sustainability/recycling challenge, but the adhesive exhibits deficient joining strength compared to standard thermosets. Here, we modify the ABL matrix by loading particulate fillers to enhance its modulus and toughness. The goal is to manufacture a cure‐free thermoplastic adhesive system with a simple dispensing protocol and characteristic ductility combined with a high yield stress for improved shear strength of a bonded joint. Fumed silica (FS) and epoxidized glass spheres (EGS) were used as fillers in the ABL to promote the dispersion of lignin particles that tailored the functionalities and free energy components of the adhesive surface. With optimal loading of FS (5 wt%) and EGS (30 wt%) in the ABL adhesive matrix, the lap‐shear strength of the bonded aluminum joint was elevated by 128%, compared to the neat ABL, reaching 21 MPa, which is 90% of the performance of a commercial epoxy‐based adhesive.Highlights A partly renewable filler‐toughened thermoplastic adhesive has been developed. This thermoplastic gives nearly equivalent performance of adhesively bonded aluminum joint compared to standard thermosets. Experimental and simulation data help understand the adhesive reinforcing mechanism by the fillers.

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“…Each sample was measured five times to obtain the average value. A detailed process was discussed in our previous manuscript 31 …”

Section: Methodsmentioning

confidence: 99%

Section: Adhesive Characterizationmentioning

confidence: 99%

Acrylonitrile‐butadiene‐lignin thermoplastic rubber adhesive for enhanced metal‐to‐metal joining

Yu,

Kanbargi,

Gupta

et al. 2024

Polymer Composites

Self Cite

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“…However, both chemical methods (e.g., chemical etching, [341,342] coating, [343][344][345][346] nano-reinforcement, [347,348] etc.) and surface modification techniques (e.g., corona discharge, [349][350][351] plasma treatment, [352][353][354][355] gamma irradiation, [356] etc.) can be used to improve the interfacial cohesion between the thermoplastic polymer fiber and the polymer matrix, as comprehensively reviewed by Chhetri et al [357] In addition, to the best of the authors' knowledge, the interfacial tensile behavior between thermoplastic polymer fiber and thermoplastic polymer matrix was not or extremely less investigated in the literature after a careful review study.…”

Section: Interfacial and Longitudinal Compressive Behaviors Of Thermo...mentioning

confidence: 99%

A review of the fabrication methods and mechanical behavior of continuous thermoplastic polymer fiber–thermoplastic polymer matrix composites

et al. 2022

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Thermoplastic polymer fiber-thermoplastic polymer matrix composites (PPCs or PRFPs), often recognized as self-reinforced or single polymer composites, are potential candidates for future advanced polymer composites because of various advantages (e.g., recyclability, formability, low-cost, ultra-lightweight, environmental friendliness, etc.). The manufacturability and mechanical behavior of these composites compared to conventional carbon-/glass-/aramid-fiberreinforced polymers is of great interest to the composites community, but there are a limited number of studies in this area. To this end, this paper reviewed fabrication methods with different processing parameters and mechanical behavior of uni-/multi-directional thermoplastic PPCs featuring continuous thermoplastic Lisa D. Fring and Madhusudhan R. Pallak contributed equally to this study.

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“…18,19 Plasma treatment has broad application prospects in surface modification of polymer materials, but the modification effect will obviously attenuate with time due to complex mechanisms. [20][21][22][23][24] The electrochemical oxidation treatment of CF is carried out under potential drive, and followed by sizing treatment, so the generated surface groups are relatively stable. Studies have shown that the thermal decomposition temperature of active functional groups on the surface of CFs after electrochemical oxidation is above 450°C.…”

Section: Introductionmentioning

confidence: 99%

Effect of electrochemical oxidation degree of carbon fiber on the interfacial properties of carbon fiber–reinforced polyaryletherketone composites

Gao

Yang

Liu

et al. 2022

Journal of Reinforced Plastics and Composites

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Electrochemical oxidation of carbon fiber (CF) is used to enhance the interfacial adhesion of CF-reinforced polyaryletherketone (CF/PAEK) composites. The effect of current intensity parameter on surface structure of CF and interfacial properties of the corresponding thermoplastic composites are deeply investigated. The results show that the current intensity in the range of 80 A–300 A does not lead to a decrease in the mechanical property of CFs. When the current intensity is 200 A, CF/PAEK composites have the highest interfacial performance, which is mainly due to the improvement of CF surface roughness, wettability, and oxygen content. In addition, the degree of graphitization of CF surface is also a crucial factor affecting the interfacial properties of CF/PAEK. The higher the content of carboxyl groups, the more disordered the structures exist on the CF surface, which are not conducive to the strong adhesion of CF to PAEK resin. Therefore, balancing the wettability and graphitization degree of the CF surface is the key to enhancing the CF/PAEK interfacial properties by electrochemical treatment techniques.

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Significant slowdown of plasma-optimized surface energy deactivation by vacuum sealing for efficient adhesive bonding

Cited by 18 publications

References 39 publications

Acrylonitrile‐butadiene‐lignin thermoplastic rubber adhesive for enhanced metal‐to‐metal joining

Acrylonitrile‐butadiene‐lignin thermoplastic rubber adhesive for enhanced metal‐to‐metal joining

A review of the fabrication methods and mechanical behavior of continuous thermoplastic polymer fiber–thermoplastic polymer matrix composites

Effect of electrochemical oxidation degree of carbon fiber on the interfacial properties of carbon fiber–reinforced polyaryletherketone composites

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