Influence of low-pressure plasma treatment on adhesive bonding between polybutylene terephthalat (PBT) and aluminum

Anagreh, Nabil; Dorn, Lutz

doi:10.1016/j.ijadhadh.2004.06.003

Cited by 24 publications

(7 citation statements)

References 2 publications

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“…Several strategies to enhance silicone adhesion to stainless steel have been proposed. These include the use of adhesion promoters, wet chemical primers, ultraviolet light irradiation, thermal treatments, metallic co‐agents, hydrosilylation copolymerisation reactions with a silicon hydride crosslinker in the presence of heavy metal (platinum/rhodium) catalysts9–12 and plasma treatments 13–16. However, these strategies have several limitations.…”

Section: Introductionmentioning

confidence: 99%

The effect of plasma‐polymerised silicon hydride‐rich polyhydrogenmethylsiloxane on the adhesion of silicone elastomers

Nwankire

Ardhaoui

Dowling

2009

Polymer International

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BACKGROUND: Silicone elastomers have outstanding material properties including good thermal stability, low electrical conductivity, biocompatibility and resilient physical and chemical properties. These elastomers, however, exhibit relatively poor adhesion to stainless steel, and the use of a nanometre thick plasma‐polymerised primer layer as a means of enhancing this adhesion was investigated in this study. The primer coatings studied consisted of polyhydrogenmethylsiloxane (PHMS), tetraethyl orthosilicate (TEOS) and mixtures of these two liquid precursors. RESULTS: The plasma‐polymerised primer coatings were deposited onto stainless steel substrates using a PlasmaStream™ atmospheric pressure plasma jet system. Deposited coatings were examined using ellipsometry, contact angle measurements, optical profilometry, Fourier transform infrared spectroscopy, X‐ray photoelectron spectroscopy and scanning electron microscopy. The adhesion of silicone elastomers bonded to the primed and bare stainless steel surfaces was assessed using 45° adhesion strength measurements. Elastomer adhesion was correlated with surface energy, thickness and roughness. CONCLUSION: An up to 15‐fold increase in adhesive fracture energy was observed for silicone elastomers bonded to the primed versus untreated stainless steel. The highest adhesion was observed for a coating deposited from a PHMS‐to‐TEOS precursor molar ratio of 3 to 1. Copyright © 2009 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

The effect of plasma‐polymerised silicon hydride‐rich polyhydrogenmethylsiloxane on the adhesion of silicone elastomers

Nwankire

Ardhaoui

Dowling

2009

Polymer International

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“…Results and discussion SEM observations of treated surfaces O 2 -plasma), which is more pronounced for O 2 -plasma treated samples. In previous studies, 2,14,24 the researchers reported no significant increase in the surface roughness for PE, POM, PBT, and PA6 after LPP surface treatment. Moreover, an ablation of the outermost surface layers of the POM occurs in O 2 -treated samples after 1800 s, and this is evidenced by the appearance of the glass fibers that are embedded in the POM matrix, Figure 1(l), and this is due to the stronger oxidation effect of O 2 -plasma in comparison to that of Ar-plasma.…”

Section: Characterization Of Samplesmentioning

confidence: 86%

“…In oxyfluorination, the increase in fluorine content shown by ESCA measurements leaded to the increase in polar component, while the decrease in dispersive component was due to the decrease in hydrocarbons. Anagreh and Dorn 24 have noted an increase in the bonding strength and peel resistance of PBT treated with O 2 - and A-LPP and attributed to the increased wettability and polarity, but there was no significant increase in the surface roughness. Sanchis et al 6 have investigated the wettability of low-density polyethylene (LDPE) films treated by O 2 -LPP and reported an enhancement in the wetability due to the formation of some polar species.…”

Section: Introductionmentioning

confidence: 97%

“…These aforementioned techniques have shown different adhesion mechanisms, which were also dependent on the type of plastics. 1 –42 Acheriner et al 2,14 have reported that the oxyfluorination of some plastics such as polyethylene (PE), POM, polybutylene terephthalate (PBT), and polyamide 6 (PA6) resulted in an increase in their surface free energy where the polar component increased while the dispersive component decreased. Similar findings were highlighted by Acheriner 14 when performing LPP treatment.…”

Section: Introductionmentioning

confidence: 99%

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Testing and evaluation of adhesive bonded joints of unreinforced and glass fiber–reinforced polyoxymethylene treated with low-pressure plasma

Anagreh

Dweiri

Al-Ajlony

2018

Journal of Thermoplastic Composite Materials

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The effect of surface treatment of polyoxymethylene (POM) using low-pressure plasma (LPP) on its adhesive bonding was investigated. Three different types of adhesives were used. Examinations of single lap shear, scanning electron microscopy, contact angle measurements, and energy dispersive X-ray analysis were carried out. The results showed that the adhesion strength was apparently enhanced when treating surfaces by LPP using argon or oxygen plasma which increased with the treatment time. This increase was also dependent on the adhesive type. Moreover, glass fiber–reinforced POM showed better adhesion strength compared to that of unreinforced POM. An increase in the surface free energy exceeding 50 mN/m was observed after 600-s treatment time compared to untreated samples (39 mN/m), where the increase in polar component was more predominant. Surface topography observations showed a significant increase in the surface roughness with increasing the treatment time, mainly when using oxygen plasma. Finally, an increase in polarity and wettability due to changes in the chemical composition of the surface was also reported.

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“…While the effectiveness of plasma treatments on the adhesive bonding of aluminium were proved in [12,[18][19][20][21]. On the other hand, despite laser cleaning treatments are an emerging technology, there are many study that demonstrate the effectiveness of this treatment in the cleaning of surfaces and/or in joint preparation [22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Effect of Laser and Plasma Surface Cleaning on Mechanical Properties of Adhesive Bonded Joints

et al. 2015

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The use of adhesives in place of traditional joining techniques as welding and riveting is becoming increasingly common in structural design. Compared to other conventional joining processes, adhesive bonding offers several advantages: including acoustic insulation, vibration attenuation, structure lightening, corrosion reduction and uniform stress distribution. These benefits can be offset if the surfaces to be bonded are not carefully cleaned, degreased and prepared. Many approaches to surface treatments based on physical or chemical modifications have been developed in the years in order to improve the surface activity. Although widely used and very efficient, these techniques present several disadvantages. Physical methods based on mechanical abrasion are supposed to extend bonding area as they increase the roughness, but cause an extensive degradation to the specimens and they are often not easy to reproduce. On the other hand, chemical treatments are typically used with the aim of modifying both morphology and chemical structure of the substrates layers, but they present serious environmental problems of waste disposal, which has moved investigations to an industrial alternative to these processes. According, the use of energetic methods of surface cleaning, such as laser and plasma cleaning processes have been recently consolidated since they are useful to modify the topmost layers of the substrates, increasing their reactivity, without affecting the bulk material properties. These treatments offer an effective and environment-friendly processing of different materials, providing strong and durable bonds with adhesives through modification of the surface morphology and functionalities. In this study, the effects of laser and low pressure plasma treatments on mechanical properties of adhesive bonded joints has been investigated and compared performing lap-shear tests

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Influence of low-pressure plasma treatment on adhesive bonding between polybutylene terephthalat (PBT) and aluminum

Cited by 24 publications

References 2 publications

The effect of plasma‐polymerised silicon hydride‐rich polyhydrogenmethylsiloxane on the adhesion of silicone elastomers

The effect of plasma‐polymerised silicon hydride‐rich polyhydrogenmethylsiloxane on the adhesion of silicone elastomers

Testing and evaluation of adhesive bonded joints of unreinforced and glass fiber–reinforced polyoxymethylene treated with low-pressure plasma

Effect of Laser and Plasma Surface Cleaning on Mechanical Properties of Adhesive Bonded Joints

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