scholarly journals Bonding of thermoplastic microfluidics by using dry adhesive tape

RSC Advances ◽  
2020 ◽  
Vol 10 (51) ◽  
pp. 30289-30296 ◽  
Author(s):  
Chia-Wen Tsao ◽  
Wan-Ci Syu
Keyword(s):  
Adhesive Bonding ◽  
Adhesive Tape ◽  
Dry Adhesive ◽  
Air Bubble ◽  
Bonding Performance

We investigated dry adhesive bonding of thermoplastic microfluidics. The bonding performance is correlated to the air bubble encapsulation and Saffman–Taylor finger formation phenomena at the interface.

The effect of channel aspect ratio on air entrapment during imbibition in soil-on-a-chip micromodels with 2D and 2.5D pore structures

Lab on a Chip ◽  
2021 ◽  
Author(s):  
Chia-Wen Tsao ◽  
Qun-Zhan Huang ◽  
Chang-Ye You ◽  
Markus Hilpert ◽  
Shao-Yiu Hsu ◽  
...  
Keyword(s):  
Aspect Ratio ◽  
Adhesive Bonding ◽  
Film Flow ◽  
Ct Images ◽  
Cnc Machining ◽  
Air Entrapment ◽  
Dry Adhesive ◽  
X Ray ◽  
Piston Displacement ◽  
Channel Aspect Ratio

“Soil-on-a-chip” micromodels designed with X-ray CT images were fabricated by tabletop CNC machining and dry adhesive bonding. The competition between film flow and piston displacement causes the air entrapment differences in 2D and 2.5D micromodels.

scholarly journals Cold Plasma Pretreatment of Carbon Fibre Composite Substrates to Improve Adhesive Bonding Performance

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Chiara Mandolfino ◽  
Enrico Lertora ◽  
Carla Gambaro
Keyword(s):  
Contact Angle ◽  
Carbon Fibre ◽  
Plasma Treatment ◽  
Adhesive Bonding ◽  
Fibre Composite ◽  
Power Input ◽  
Carbon Fibre Composite ◽  
Bonding Performance ◽  
Lap Shear ◽  
Composite Substrates

The purpose of the paper is to investigate the effects of low pressure plasma treatment on wettability of carbon fibre reinforced polymer samples and on shear properties of adhesive bonded joints based on these substrates. In particular, two plasma process parameters, exposure time and power input, were optimized, performing contact angle evaluation on lap-shear tests. The plasma treatment was also compared with a conventional mechanical abrasion and untreated and only degreased specimens. The experimental results show that choosing the optimal parameters is possible to improve the wettability of composite substrates and reduce the contact angle.

scholarly journals Experimental Study on Steel to FRP Bonded Lap Joints in Marine Applications

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Çiçek Özes ◽  
Nurhan Neşer
Keyword(s):  
Surface Roughness ◽  
Adhesive Bonding ◽  
Weight Ratio ◽  
Steel Structures ◽  
High Strength ◽  
Lap Joints ◽  
Bonded Joints ◽  
Bonding Performance ◽  
Marine Industry ◽  
Marine Applications

Steel structures coated with fiber-reinforced polymer (FRP) composites have gained wide acceptance in marine industry due to their high strength-to-weight ratio, good protection from environmental degradation, and impact loads. In this study, adhesive bonding performance of single-lap bonded joints composed of steel coated with FRP has been investigated experimentally for three different surface roughness and two epoxy types. Single-lap bonded joints have been tested under tensile loading. The adhesive bonding performance has been evaluated by calculating the strain energy values. The results reveal that the surface roughness of steel has a significant effect on the bonding performance of steel to FRP combinations and the performance of the resin can be improved by using the primer in an economical way.

Chromium-Free Surface Pre-Treatment of Aluminum for Adhesive Bonding

2010 ◽  
Author(s):  
S. L. Ngoh ◽  
S. C. Tan ◽  
C. S. Goh ◽  
J. Wei
Keyword(s):  
Free Surface ◽  
Bonding Strength ◽  
Adhesive Bonding ◽  
Surface Preparation ◽  
Treatment Method ◽  
Solution Concentration ◽  
Bonding Performance ◽  
Initial Adhesion ◽  
Vital Effect ◽  
Pre Treatment

Adhesive bonding offers many advantages, such as light weight, ease of manufacturing, corrosion resistance and more uniform stress distribution at joint. In order to achieve good initial adhesion and durability of adhesive bonded aluminum joint, pre-treatment of the aluminum substrate is essential. Some of the surface pre-treatment procedures commonly used are chromium-based chemical and electro-chemical methods. However, due to the environmental and health concerns, and legislation to ban the use of hexavalent chromium, there is a need to omit the use of chromium-based pre-treatment methods in the surface preparation process. Therefore, this work aims to study the effect of the developed hybrid chromium-free surface pre-treatment method on the bonding strength of adhesive bonded aluminum joint. The study on the effects of solution concentration level and processing time of the hybrid treatment on the bonding strength suggests that bonding strength can be improved through enhancement of mechanical interlocking and increase of bonding area between the adhesive and adherend. Even though comparable or rougher surface morphologies were obtained from hybrid treatments as compared to the chromium-based treatment, lower bonding strengths were observed. This further suggests that the nano-scale level interaction between the adhesive and adherend has vital effect on the bonding performance.

scholarly journals Dry adhesive bonding of nanoporous inorganic membranes to microfluidic devices using the OSTE(+) dual-cure polymer

2013 ◽  
Vol 23 (2) ◽  
pp. 025021 ◽  
Author(s):  
Farizah Saharil ◽  
Fredrik Forsberg ◽  
Yitong Liu ◽  
Paolo Bettotti ◽  
Neeraj Kumar ◽  
...  
Keyword(s):  
Adhesive Bonding ◽  
Microfluidic Devices ◽  
Inorganic Membranes ◽  
Dry Adhesive

scholarly journals Surface Treatment of Composites with Bismaleimide Resin-Based Wet Peel Ply for Enhanced Adhesive Bonding Performance

Polymers ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 3488
Author(s):  
Hongfeng Li ◽  
Liwei Zhao ◽  
Yingjie Qiao ◽  
Xuefeng Bai ◽  
Dezhi Wang ◽  
...  
Keyword(s):  
Shear Strength ◽  
Surface Treatment ◽  
Bonding Strength ◽  
Adhesive Bonding ◽  
Retention Rate ◽  
Bismaleimide Resin ◽  
Bonding Performance ◽  
Composite Joint ◽  
The Matrix ◽  
Peel Ply

Surface treatment is typically required to improve the bonding performance of carbon-fiber-reinforced composites. Herein, a wet peel ply was prepared using bismaleimide (BMI) resins as a matrix resin. The temperature–heating rate extrapolation method and rheological method were employed to study the reaction characteristics and viscosity-temperature characteristics of the matrix in the BMI wet peel ply. The curing temperatures of the BMI wet peel ply and the BMI prepreg were the same (200 °C), making this wet peel ply suitable for co-curing with the BMI prepreg. After treatment with the wet peel ply, the bonding strength of the BMI composite joint showed a mean shear strength of 35.5 MPa, which was 1.72% higher than that of the sanded composite and 17.5% higher than that of the composite treated with the dry peel ply. In addition, the BMI composite treated with the BMI wet peel ply exhibited good bonding stability with a coefficient of variation of 3.9. After damp-heat aging for 1440 h, the retention rate of shear strength at room-temperature was 82.3%. The relatively loosely woven carrier in the BMI wet peel ply increased the surface roughness of the composite, thus improving the bonding strength.

Adhesive Bonding Performance of GA Coated 590 MPa Tensile Strength Steels

2011 ◽  
Author(s):  
Susan J. Wolf ◽  
Chann Cheng ◽  
Benda Yan ◽  
Jayanth Chintamani ◽  
Michael Golden ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Adhesive Bonding ◽  
Bonding Performance
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