Mechanism study of bubble removal in narrow viscous fluid by using ultrasonic vibration

Wang, Hui; Chen, Zhenyan; Chen, Youming; Xie, Mingjie; Hua, Lin

doi:10.7567/1347-4065/ab4dfa

Cited by 9 publications

(2 citation statements)

References 52 publications

(61 reference statements)

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“…The high-frequency vibration could induce oscillating flow in the adhesive layer. Because of internal pressure of air traps and asymmetric characteristic of fluid resistance around, the oscillating flow caused entrapped bubbles to break, move, and escape from the viscous adhesive [30], and thus air traps were decreased. Owing to the tight interface and adhesive layer, the interface adhesion of the adhesive and the Al adherend is more reliable.…”

Section: Reaction At Interfacementioning

confidence: 99%

Effect of Ultrasonic Vibration on Adhesive Bonding of CFRP/Al Alloy Joints Grafted with Silane Coupling Agent

Tong

Wang

et al. 2020

Polymers

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Adhesive bonding is widely used in the joining of metals and carbon fiber-reinforced plastics (CFRPs). Ultrasonic vibration was used to improve adhesive bonding of CFRP/Al alloy joints grafted with silane coupling agent, and the effect of the ultrasound on the bonding was studied. The surface of Al alloy was treated with a silane coupling agent, and then the ultrasonic vibration was applied on the adherend during the adhesive bonding process. The shear strength was tested, and the mechanism was analyzed by scanning electron microscope (SEM) and Fourier transform infrared spectrometer (FTIR). It is found that the ultrasonic assisting can further promote the bonding of the Al alloy and the adhesive. For the test joins, the shear strength was increased by 267.50% using the silanization treatment plus the ultrasonic assisting. The ultrasonic assisting promoted the grafted epoxy group to react with the adhesive more sufficiently at the Al/adhesive interface by causing micro-mixing and intensified molecule collision, and thus more chemical bond was formed. Under the ultrasonic action, the interface and the adhesive layer became tighter owing to the impact contact at the interface and the oscillating flow in the adhesive layer. The ultrasonic vibration assisting increased the bonding strength by promoting the chemical bond and improving physical morphology.

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Section: Reaction At Interfacementioning

confidence: 99%

Effect of Ultrasonic Vibration on Adhesive Bonding of CFRP/Al Alloy Joints Grafted with Silane Coupling Agent

Tong

Wang

et al. 2020

Polymers

Self Cite

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“…In recent years, ultrasonic vibration has been widely used in promoting filling and wetting of adhesive [22] , [23] . Liu et al [24] investigated the effects of ultrasound on the surface tension of the epoxy resin and on the surface characteristics of the aramid fibre.…”

Section: Introductionmentioning

confidence: 99%