Enhancement in Interfacial Adhesion of Ti/Polyetheretherketone by Electrophoretic Deposition of Graphene Oxide

Abstract

This article discusses about the significance of graphene oxide (GO) deposition on the surface of a titanium plate by electrophoretic deposition (EPD) method to improve the adhesive strength of Ti/polyetheretherketone (PEEK) interfacial adhesive. Firstly, the anodic EPD method was applied to a water dispersion solution of GO, and then the morphology and the properties of titanium plate surface were characterized by scanning electron microscopy and contact angle measurements before and after GO deposition. Furthermore, the changes in the properties of GO after heating at 390°C were characterized by Raman and Fourier transform infrared spectroscopies. According to the results of single lap tensile shear test, the adhesion strength of Ti/PEEK interface after the anodization and deposition of GO was 34.94 MPa, an increase of 29.2% compared with 27.04 MPa of sample with only anodization. Also, the adhesion strengths were 58.1 and 76.5% higher compared with the samples of only GO deposited (22.1 MPa) and pure titanium (19.8 MPa), respectively. POLYM. COMPOS., 40:E1243–E1251, 2019. © 2018 Society of Plastics Engineers

Nanocomposite coatings obtained by electrophoretic co-deposition of poly(etheretherketone)/graphene oxide suspensions

“…Similar preferential alignment of graphene oxide (GO) nanosheets has been reported in the EPD process [16][17][18][19][20][21]. Furthermore, the incorporation of GO has two main advantages: firstly, the adhesion of GO coatings on metallic substrates after thermal treatment has been attributed to the interaction between the oxygenated functional groups of GO and the metallic surface, and thereby, GO coatings have been used as the interface between PEEK and the metallic substrate to enhance the mechanical properties [21]; secondly, p-conjugated structures in graphitic materials can form strong p-p stacking interactions with the benzene ring such that found in PEEK [22,23]. Nonetheless, direct co-deposition of PEEK/GO by EPD, which should be an attractive route to nanocomposite coatings, has not been explored so far.…”

“…In this respect, EPD is useful to develop specific microstructures from multicomponent suspensions [14]; for instance, in the study of PEEK/MoS 2 coatings by electrophoretic codeposition, MoS 2 was found to align preferentially, parallel to the coating surface [15]. Similar preferential alignment of graphene oxide (GO) nanosheets has been reported in the EPD process [16][17][18][19][20][21]. Furthermore, the incorporation of GO has two main advantages: firstly, the adhesion of GO coatings on metallic substrates after thermal treatment has been attributed to the interaction between the oxygenated functional groups of GO and the metallic surface, and thereby, GO coatings have been used as the interface between PEEK and the metallic substrate to enhance the mechanical properties [21]; secondly, p-conjugated structures in graphitic materials can form strong p-p stacking interactions with the benzene ring such that found in PEEK [22,23].…”

Effects of the Electrophoretic Deposition of CNTs on the Mechanical Properties of Ti/CFRP Composite Laminates

“…The surface energy parameters are listed in Table S2 . The solid surface energy was calculated according to the following formula 12 , 20 where is the measured contact angle; and are the polar part and dispersive part of the solid–gas surface free energy; and are the polar part and dispersive part of the liquid–gas surface free energy; and and represent the surface energies of the liquid and solid surfaces, respectively.…”

“…The surface treatment methods of titanium alloy plates can be divided into three categories: (i) mechanical treatments: sandblasting 13 and shock peening; 14 (ii) chemical treatments: anodizing 15 and etching; 16 (iii) the addition of an interfacial layer: sol–gel methods, 17 plasma-spray, 18 coupling agent, 19 and electrophoretic deposition (EPD). 20 All of these treatments can effectively increase the bonding strength between the metal and polymer, thereby enhancing the interface. Among them, EPD is a simple, generic, and reliable room-temperature method for coating nanomaterials (including CNTs) on conductive substrates.…”

“… 23 , 24 An et al 25 studied the deposition of CNTs on carbon fiber fabric by EPD, and the shear strength and fracture toughness of the carbon/epoxy composites were significantly increased. Pan et al 20 studied the deposition of graphene oxide on the surface of an anodized titanium plate by EPD. Compared with the original titanium plate, the adhesion strength increased by 76.5%; however, no reports have shown the effect of CNTs on the bonding strength of the interface between titanium plates and resin.…”