Improvement of adhesive bonding of thermoplastic polymers by different surface treatments

1998 ◽  
Vol 126 (1) ◽  
pp. 267-281 ◽  
Author(s):  
Thomas Zeiler ◽  
Petra Pfeffer ◽  
Marcus Kürner ◽  
Helmut Münstedt
Keyword(s):  
Adhesive Bonding ◽  
Surface Treatments ◽  
Thermoplastic Polymers

scholarly journals Surface activation of High Impact Polystyrene substrate using dynamic atmospheric pressure plasma

2019 ◽  
Vol 4 (1) ◽  
pp. 80-87
Author(s):  
Gergely Juhász ◽  
Miklós Berczeli ◽  
Zoltán Weltsch
Keyword(s):  
Surface Treatment ◽  
Atmospheric Pressure ◽  
Adhesive Bonding ◽  
Atmospheric Pressure Plasma ◽  
Theoretical Background ◽  
Surface Treatments ◽  
Surface Adhesion ◽  
Adhesion Properties ◽  
Pressure Plasma ◽  
Plasma Surface Treatment

Over the last decade, the number of researches has increased in the field of bonding technologies. Researchers attempt to improve surface adhesion properties by surface treatments. Adhesive bonding is one of these bonding techniques, where it is important to see what surfaces will be bonded. One such surface property is wetting, which can be improved by several types of surface treatment. In recent years, atmospheric pressure plasmas have appeared, with which research is ongoing on surface treatments. In our research, we will deal with the effects of plasma surface treatment at atmospheric pressure and its measurement. In addition, we summarize the theoretical background of adhesion, surface tension and surface treatment with atmospheric pressure plasma. Our goal is to improve adhesion properties and thus the adhesion quality.

Experimental Research and Analysis of Mechanical Properties of Aluminum Alloy 6063 Adhesive Bonding

2012 ◽  
Vol 271-272 ◽  
pp. 156-162
Author(s):  
Hui Ling Wei ◽  
Qun Gao ◽  
Zhi Jian Zong
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Shear Test ◽  
Adhesive Bonding ◽  
Great Influence ◽  
Surface Treatments ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Adhesive Thickness ◽  
Aluminum Alloy 6063

The different geometric sizes, different adhesive thickness and different surface treatments have great influence on the properties of aluminum alloy 6063 bonding joints. This paper takes single lap joint for object, adopts the tensile shear test, takes the tensile shear strength as the judgment basis, and exploresthe variation inperformance of aluminum alloy 6063 bondingjoints. The test results show that: Aluminum alloy 6063 bonding joints occur serrated yielding phenomenon inthe tensile shear test; In a certain layer thickness range, tensile shear strength of aluminum alloy 6063 bondingjoints correspondingly increaseswiththe thickness of samples increasing; Different surface treatments on aluminum alloy 6063 have a great influence on tensile-shear strength, and mechanical polishing and skim can significantly improve tensile shear strength of aluminum alloy 6063 bonding joints.

scholarly journals Comparison of Self-Etching Ceramic Primer and Conventional Silanization to Bond Strength in Cementation of Fiber Reinforced Composite Post

Materials ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1585
Author(s):  
Nan-Sim Pang ◽  
Bock-Young Jung ◽  
Byoung-Duck Roh ◽  
Yooseok Shin
Keyword(s):  
Bond Strength ◽  
Hydrofluoric Acid ◽  
Adhesive Bonding ◽  
Failure Modes ◽  
Testing Machine ◽  
Surface Treatments ◽  
Fiber Reinforced ◽  
Fiber Reinforced Composite ◽  
Reinforced Composite ◽  
Push Out

Various mechanical and chemical surface treatments have been proposed to improve the retention of fiber-reinforced composite post (FRCP), but the results are still controversial. The bond strength and durability of a self-etching ceramic primer, which was recently released as an alternative to etching and silane, are not yet known. This study aimed to compare and evaluate the push-out bond strength of different surface treatments of FRCPs after an artificial aging procedure. Four groups (n = 10) were established to evaluated FRCP surface treatments (dentin adhesive bonding; silane and adhesive bonding; hydrofluoric acid, silane and adhesive bonding; and a self-etching ceramic primer). They were bonded with dual-curing rein cement (Multilink N) and stored in distilled water at 37 °C for 30 days, then thermal cycled for 7500 cycles. After being sectioned into 1 mm thickness, each coronal and apical part was evaluated for its the push-out bond strength by a universal testing machine. Each debonded specimen was observed by an optical microscope and divided according to the failure modes. The results showed that silane treatment significantly improved push-out bond strength, but the self-etching ceramic primer did not do so. Additional hydrofluoric acid treatment or the adhesive bonding agent alone did not significantly improve the retention of FRCPs. Cohesive failure of the luting material was found most frequently in all groups.

scholarly journals Adhesion Improvement of Thermoplastics-Based Composites by Atmospheric Plasma and UV Treatments

2021 ◽  
Author(s):  
Gennaro Scarselli ◽  
Dong Quan ◽  
Neal Murphy ◽  
Brian Deegan ◽  
Denis Dowling ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Adhesive Bonding ◽  
Contact Angles ◽  
Lap Joints ◽  
Surface Treatments ◽  
Polyphenylene Sulfide ◽  
Atmospheric Plasma ◽  
Thermoplastic Composites ◽  
Lap Shear ◽  
Carbon Fibre Composites

AbstractThe present work is concerned with adhesive bonding of thermoplastic composites used in general aerospace applications, including polyphenylene sulfide (PPS), polyetherimide (PEI) and polyetheretherketone (PEEK) carbon fibre composites. Three different surface treatments have been applied to the PEEK, PPS and PEI-based composites in order to enhance the adhesion: atmospheric plasma, ultraviolet radiation (UV) and isopropanol wiping as a control. Water contact angles and free surface energies were measured following the standard experimental procedure based on the employment of three different liquid droplets. Infrared spectroscopy and X-ray photoelectron spectroscopy (XPS) were subsequently performed to characterize the surface chemistry of the samples after treatment. The single lap joints were manufactured and bonded by an Aerospace grade epoxy-based film adhesive originally developed for use on metals but with the ability to bond treated thermoplastics to good strength (supplied by Henkel Ireland). Quasi-static (QS) tests were conducted. The lap shear strength was evaluated, and the failure mechanisms of the different joints were examined for the range of surface treatments considered. It was found that the performances of the PEEK and PPS joints were considerably improved by the plasma and UV treatments resulting in cohesive and delamination failures, while PEI was unaffected by the plasma and UV treatments and performed very well throughout.

Development of new surface treatments for the adhesive bonding of aluminum surfaces

2021 ◽  
pp. 103006
Author(s):  
Justine Layec ◽  
Florence Ansart ◽  
Sandrine Duluard ◽  
Viviane Turq ◽  
Maelenn Aufray ◽  
...  
Keyword(s):  
Adhesive Bonding ◽  
Surface Treatments ◽  
Aluminum Surfaces

Green Polyurethane Adhesive Bonding of Aluminum: Effect of Surface Treatments

2013 ◽  
Vol 393 ◽  
pp. 51-56 ◽  
Author(s):  
Norazwani Muhammad Zain ◽  
Sahrim H. Ahmad ◽  
Ernie Suzana Ali
Keyword(s):  
Surface Treatment ◽  
Adhesive Bonding ◽  
Substrate Surface ◽  
Surface Condition ◽  
Palm Kernel ◽  
Surface Treatments ◽  
Warm Water ◽  
Polyurethane Adhesive ◽  
Adhesive Interaction ◽  
Alkaline Etching

Aluminum alloy 2024-T3 was treated by two different methods of surface treatments i.e. by alkaline etching and warm water treatment followed by silanization method in order to enhance the adhesive bonding. The effects of both the substrate surface condition and the adhesive properties on singlelap shear resistance were analysed. Three different formulation of polyurethane adhesive by varying the NCO:OH ratio which were prepared from polyol based on polycaprolactone (PCL)/palm kernel oil (PKO) with an aromatic and cycloaliphatic diisocyanate. Moreover, wettability tests were performed in order to evaluate the effect of all parameters mentioned above on the substrate/adhesive interaction. Surface treatment with warm water and ɣ-GPS gives better wettability and adhesive bonding compared to alkaline etching surface treatment.

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