High Adhesive Force between Laminated Sheets of Copper and Polyurethane Improved by Homogeneous Low Energy Electron Beam Irradiation (HLEBI) Prior to Hot-Press

Uyama, Masato; Fujiyama, Naoki; Okada, Takumi; Kanda, Masae; Nishi, Yoshitake

doi:10.2320/matertrans.mbw201312

Cited by 10 publications

(6 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These effects are mainly caused by surface energy induced by the irradiation with the formation of active terminated atoms with dangling bonds creating chemical bonds between the metal and polymer. 14) Since HLEBI improves the joining between different polymers and metals/polymers, 16,17) rapid and safe-ty adhesion by using HLEBI has been successfully developed. Adhesion between Ti and PC has not been improved by HLEBI or hot-press alone.…”

Section: Introductionmentioning

confidence: 99%

Adhesive Force of Laminations of Titanium Untreated and Polycarbonate Homogeneously Irradiated by Low Potential Electron Beam Prior to Assembly and Hot-Press

et al. 2017

Self Cite

View full text Add to dashboard Cite

A 2-layer Titanium/polycarbonate (Ti/PC) laminated sheet treated by homogeneous low energy electron beam irradiation (HLEBI) to only the PC side prior to assembly and hot press at 438 K for 3.0 min under 20 MPa without the use of fasteners, rivets or glue was investigated. Experimental results showed the 0.30 MGy HLEBI dose appeared to be at or near the optimum, achieving mean adhesive force of peeling resistance, o F p at high accumulative probability of peeling P p = 0.94 of 141. Based on the results of XPS (X-ray photoelectron spectroscopy) analysis, chemical bonds occurred. When HLEBI cut the chemical bonds and generated active terminated atoms with dangling bonds at PC surface, they probably induced chemical bonding with the Ti. Furthermore, the HLEBI to only the PC side acted to generate the PC activating strong adhesion to the Ti making the interface stronger than the internal cohesion of the PC itself. In addition, 0.30 MGy-HLEBI apparently increased the active bonds sites of C-O and C-C and then decreased the inactive bonds sites of OH on the PC and Ti, resulting in strengthening the peeling resistance. Therefore, increasing adhesion force between the laminated sheets could be explained.

show abstract

Section: Introductionmentioning

confidence: 99%

Adhesive Force of Laminations of Titanium Untreated and Polycarbonate Homogeneously Irradiated by Low Potential Electron Beam Prior to Assembly and Hot-Press

et al. 2017

Self Cite

View full text Add to dashboard Cite

show abstract

“…13) These effects are mainly caused by surface energy induced by the irradiation with the formation of active terminated atoms with dangling bonds creating chemical bonds between the metal and polymer. 14) When HLEBI improves the joining between different polymers and metals/polymers, 19,20) rapid and safety adhesion by using HLEBI has been successfully developed.…”

Section: Introductionmentioning

confidence: 99%

An Aluminum/Polycarbonate (Al/PC) Joint by Homogeneous Low Voltage Electron Beam Irradiation (HLEBI) to PC Prior to Lamination Assembly and Hot-Press

et al. 2016

Self Cite

View full text Add to dashboard Cite

A 2-layer aluminum/polycarbonate (Al/PC) joint was fabricated between half specimens of typically dif cult to adhere Al and PC without use of welding, fasteners, rivets, chemical treatment or glue by a new double-step adhesion method: applying a low dose of homogeneous low energy electron beam irradiation (HLEBI) to only the PC connecting surface, prior to lamination assembly and hot press at 418 K for 3.0 min under 15 MPa pressure. Experimental results showed 0.30 MGy along with 0.22 MGy had adhesion created in all 11 samples of their data sets [11/11], although data sets of untreated (hot press alone), 0.04, 0.13 and 0. . Based on the 3-parameter Weibull equation, the statistically lowest o F p at P p = 0 (F s ) from 0.30 MGy-HLEBI was the highest value over all other data sets at 3.10 N·m . XPS (X-ray photoelectron spectroscopy) of the peeled Al side revealed a C(1s) peak shift in binding energy from 283.8 eV (C-C) to 284.3 eV (C=C), along with increase in O(1s) C=O peak intensity (531.8 eV) indicating the 0.30 MGy HLEBI generates increased reactive double bond (π-bond) sites which can explain stronger o

show abstract

“…The peeling adhesive force (F p ) and its peeling distance (d p ) were obtained by the peeling test, which was performed by using a micro-load tensile tester (F-S Master-1K-2N, IMADA Co. Ltd., Japan) with a strain rate of 10 mm/min. 9,10) Since the unit of the F p is Nm…”

Section: T-peeling Testmentioning

confidence: 99%

High Adhesive Force between Laminated Sheets of Titanium and Polyurethane Improved by Homogeneous Low Energy Electron Beam Irradiation Prior to Hot-Press

et al. 2016

Self Cite

View full text Add to dashboard Cite

2-layer Titanium/Polyurethane (Ti/PU) laminated sheets were prepared by a new adhesion method, a double-step treatment consisting of applying low dose (¼ 0.43 MGy) homogeneous low energy electron beam irradiation (HLEBI) prior to hot-press under 5 MPa and 413 K. Although the weak hot-press adhesion of the Ti/PU was observed without HLEBI, the new adhesion raised the bonding forces as evidenced by the mean adhesive forces of peeling resistance ( o F p ). Based on the 3-parameter Weibull equation, the lowest o F p value at peeling probability (P p ) of zero (F s ) could be estimated. An increasing trend in F s occurred by the double-step treatment applying HLEBI up to 0.22 MGy reaching a maximum at 123 Nm ¹1, improving the safety level without radiation damage. XPS (X-Ray Photoelectron Spectroscopy) observations of the peeled 0.22 MGy irradiated Ti revealed generation of a TiO 2 peak at 530.6 eV possibly explaining the increased adhesion. The residual PU deposition is apparently found to be retained on the Ti sheet by inter-matrix fracture of PU further into the thickness. This can be explained by the adhesion force between Ti/PU being stronger than the cohesive force of PU polymer itself.

show abstract

High Adhesive Force between Laminated Sheets of Copper and Polyurethane Improved by Homogeneous Low Energy Electron Beam Irradiation (HLEBI) Prior to Hot-Press

Cited by 10 publications

References 19 publications

Adhesive Force of Laminations of Titanium Untreated and Polycarbonate Homogeneously Irradiated by Low Potential Electron Beam Prior to Assembly and Hot-Press

Adhesive Force of Laminations of Titanium Untreated and Polycarbonate Homogeneously Irradiated by Low Potential Electron Beam Prior to Assembly and Hot-Press

An Aluminum/Polycarbonate (Al/PC) Joint by Homogeneous Low Voltage Electron Beam Irradiation (HLEBI) to PC Prior to Lamination Assembly and Hot-Press

High Adhesive Force between Laminated Sheets of Titanium and Polyurethane Improved by Homogeneous Low Energy Electron Beam Irradiation Prior to Hot-Press

Contact Info

Product

Resources

About