scholarly journals Effect of Ultrasonic Vibration on Adhesive Bonding of CFRP/Al Alloy Joints Grafted with Silane Coupling Agent

Polymers ◽  
2020 ◽  
Vol 12 (4) ◽  
pp. 947 ◽  
Author(s):  
Min Wu ◽  
Xuetong Tong ◽  
Hui Wang ◽  
Lin Hua ◽  
Yizhe Chen
Keyword(s):  
Shear Strength ◽  
Chemical Bond ◽  
Ultrasonic Vibration ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Adhesive Bonding ◽  
Adhesive Layer ◽  
Al Alloy ◽  
Silane Coupling ◽  
The Impact

Adhesive bonding is widely used in the joining of metals and carbon fiber-reinforced plastics (CFRPs). Ultrasonic vibration was used to improve adhesive bonding of CFRP/Al alloy joints grafted with silane coupling agent, and the effect of the ultrasound on the bonding was studied. The surface of Al alloy was treated with a silane coupling agent, and then the ultrasonic vibration was applied on the adherend during the adhesive bonding process. The shear strength was tested, and the mechanism was analyzed by scanning electron microscope (SEM) and Fourier transform infrared spectrometer (FTIR). It is found that the ultrasonic assisting can further promote the bonding of the Al alloy and the adhesive. For the test joins, the shear strength was increased by 267.50% using the silanization treatment plus the ultrasonic assisting. The ultrasonic assisting promoted the grafted epoxy group to react with the adhesive more sufficiently at the Al/adhesive interface by causing micro-mixing and intensified molecule collision, and thus more chemical bond was formed. Under the ultrasonic action, the interface and the adhesive layer became tighter owing to the impact contact at the interface and the oscillating flow in the adhesive layer. The ultrasonic vibration assisting increased the bonding strength by promoting the chemical bond and improving physical morphology.

Evidence for Chemical Bond Formation at Silane Coupling Agent Interfaces

1967 ◽  
Vol 1 (3) ◽  
pp. 278-292 ◽  
Author(s):  
O.K. Johannson ◽  
F.O. Stark ◽  
G.E. Vogel ◽  
R.M. Fleischmann
Keyword(s):  
Chemical Bond ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Bond Formation ◽  
Chemical Bond Formation ◽  
Silane Coupling

Effects of Coupling Agents on the Mechanical Properties of the Calcium Carbonate-Plastic Composite Packaging Materials

2012 ◽  
Vol 200 ◽  
pp. 321-324 ◽  
Author(s):  
Zhao Xia Wang ◽  
De Gao ◽  
Wen Cai Xu
Keyword(s):  
Mechanical Properties ◽  
Calcium Carbonate ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Great Influence ◽  
Coupling Agents ◽  
Packaging Materials ◽  
Plastic Composite ◽  
Silane Coupling ◽  
The Impact

Mechanical properties of the calcium-plastic composite have a great influence on the containers. The main factors affecting the mechanical properties are the process and material formulations. This paper mainly describes its impact of the addition of coupling agent. Under the usage of analysis of variance on single factor experiment, the mechanical properties of the calcium carbonate-plastic composite with three different coupling agents (silane, titanate and aluminate) were studied in the same test conditions. The results show that: The type and quantity of the coupling agent effect a lot on the mechanical properties of the composite. The silane coupling agent is the most suitable for calcium carbonate-plastic composite packaging materials, and the compatibility of calcium carbonate and polyethylene can be improved. When the silane coupling agent was at a 2.25 wt. % concentration, the tensile and flexural strength were improved obviously, especially the tensile strength increased by 23.24%, but the impact strength improved slightly.

The Preparation of Flexible Substrate Using BaTiO3/Polymer Composites for Application in High Frequency Devices

2012 ◽  
Vol 512-515 ◽  
pp. 1142-1145 ◽  
Author(s):  
Chien Min Cheng ◽  
Kai Huang Chen ◽  
Yuan Tai Hsieh ◽  
Fuh Cheng Jong
Keyword(s):  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Flexible Substrate ◽  
Sol Gel ◽  
Ceramic Powder ◽  
Electrical Measurement ◽  
Organic Polymer ◽  
Physical Analysis ◽  
Silane Coupling ◽  
The Impact

BaTiO3/ which has good dielectric properties, they were widely used in ceramic capacitors, thermistors, etc. In this study, BaTiO3/ ceramics prepared by sol-gel powder, then mixed in the organic polymer polyether imide (PEI) and dispersant (surface active agents) and silane coupling agent (Silane Coupling Agent) of the composite material on flexible substrates, And analysis of its properties and electrical properties. Increase by a ceramic powder, to explore the impact of the substrate. In the physical analysis is used XRD, SEM to measure the intensity of crystalline phase and surface uniformity of the electrical measurement using HP4294 measuring dielectric constant and dielectric loss.

The Influence of Silane Coupling Agent on Glued Spruce Wood Using Epoxy Adhesive

2014 ◽  
Vol 897 ◽  
pp. 99-102
Author(s):  
Jan Vanerek ◽  
Anna Benešová ◽  
Petr Klímek
Keyword(s):  
Shear Strength ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Strength Properties ◽  
Epoxy Adhesive ◽  
Tensile Shear Strength ◽  
Tensile Shear ◽  
Main Criterion ◽  
Spruce Wood ◽  
Silane Coupling

The paper deals with the evaluation of epoxy adhesive modification by silane coupling agent used for gluing process of spruce wood. Moreover, the usage of primer containing the silane coupling agent was performed to find out, whether better compatibility between spruce wood and epoxy adhesive at the interface bondline can ensure sufficient resistance to delamination process. As the main criterion, tensile shear strength properties of glued specimens in different thermal and moisture exposures were carried out.

Surface Modification Methods to Improve UV Inkjet Printing Performance of Ceramic

2015 ◽  
Vol 731 ◽  
pp. 476-480
Author(s):  
Zheng Jian Zhang ◽  
Li Ying Yang ◽  
Shi Liang Zhu ◽  
Hai Ying Yang
Keyword(s):  
Inkjet Printing ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Raw Materials ◽  
Three Dimensional ◽  
Ceramic Materials ◽  
Print Quality ◽  
Printing Quality ◽  
Silane Coupling ◽  
The Impact

Using UV inkjet printing can achieve three-dimensional printing of ceramic materials, but there is low ink adhesion, easy to fall off and other issues, surface coated modification to high smoothness ceramic materials can solve the above problems [1]. In this study, the silane coupling agent, adhesive, resin and other raw materials prepared for transparent coating, which applied to the surface of the ceramics. The impact of process parameters and coating formulation on the UV print quality of the ceramic base was systematic analyzed, the result shows that the volume concentration of 10% KH550 silane coupling agent as primer, and using 20wt% 102 multipurpose plastic glue for surface coating, better ink adhesion and printing quality can be obtained.

scholarly journals Modified geopolymer-based wood adhesive using waterborne polyurethane

BioResources ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. 7573-7585
Author(s):  
Dawei Pan ◽  
Hanzhou Ye ◽  
Xiaoqian Wang ◽  
Yang Zhang
Keyword(s):  
Shear Strength ◽  
Coupling Agent ◽  
Silane Coupling Agent ◽  
Waterborne Polyurethane ◽  
Wood Adhesive ◽  
Geopolymer Matrix ◽  
Silane Coupling ◽  
The Matrix ◽  
Alkaline Conditions ◽  
Wood Strength

Geopolymer binders show great potential in the application of eco-friendly wood composite adhesives. The applicability of organic-inorganic hybrid-reinforced geopolymer composites as plywood binder was investigated. In this study, a geopolymer-based wood adhesive was fabricated by mixing a matrix-geopolymeric slurry; a toughening agent, waterborne polyurethane; and a silane coupling agent, that served as the covalent “bridge” between the waterborne polyurethane with a geopolymer matrix. The results showed that the waterborne polyurethane exhibited excellent compatibility with the geopolymer and served as a flexibilizer, which transformed the matrix from a microfractured structure to a denser morphology. Moreover, the shear strength of bonded plywood and the morphology of the fracture surface after the tensile measurement were measured. The resulting geopolymer/wood interface was well bonded, and the interfacial bonding strength was higher than the wood strength matrix after modification. The introduction of waterborne polyurethane and silane coupling agent improved the water resistance of the composites and increased the wet shear strength of plywood from 0 MPa to 0.35 MPa. Notably, a weak wood/alkali interface was formed under alkaline conditions due to the strong diffusion of alkali metal ions between the interfaces.

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