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adhesives
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Study and Preparation of Two-Component Urethane_Based Adhesives for Using in Membrane Technology
, M.Sc. Thesis Sharif University of Technology ; Musavi, Abbas (Supervisor) ; Soltanieh, Mohammad (Supervisor)
Abstract
Membrane Technology is rapidly growing all over the world because of many applications. In all of this applications , use of adhesive ( between membranes and wall ) is necessary. selection of appropriate adhesive for membrane is very important in order to membrane has best performance and lifetime .Adhesives used in membrane technology must have good adhesion and suitable hardness . One of the newest adhesives used in membrane technology is two-component polyurethane adhesive. PU adhesives make strong and durable bond and have good flexibility which is an advantage for membrane technology.MDI isocyanate is used in most of commercial PU adhesives’ formulation. But in this study , modified MDI...
Joining of Aluminum to Polymeric Composite Using Friction Stir-Adhesive Hybrid Process
, M.Sc. Thesis Sharif University of Technology ; Movahedi, Mojtaba (Supervisor)
Abstract
Nowadays, metal-polymer dissimilar joints have attracted the attention of many industries, and the aplication of these joints in various industries such as automotive and aerospace is increasing. However, due to considerable differences in physical properties of metals and polymers, proper bonding between these materials is not easily possible, and metal-polymer joining remains one of the major challenges in the development of advanced composite structures. The adhesive/friction stir joining hybrid process is a relatively new idea that has been proposed to achieve longer lasting bonds and more safe structures. Using this process for metal-polymer joining can take advantage of both methods;...
Effect of Surface Treatment and Tool Rotational Speed in Aluminum to Polymeric Composite Joint Produced Using Friction Stir/Adhesive Hybrid Process
, M.Sc. Thesis Sharif University of Technology ; Movahedi, Mojtaba (Supervisor)
Abstract
Today because of increasing use of fuel, environmental problems and problems due to heavy structures in different industries it is important to use structures with high specific strength. Using different materials in structures like polymers accompanying aluminum could be useful. Polymers are light, heat insulating and have a high corrosion resistance. Polypropylene is one of the useful polymers which can have high impact energy and strength via adding Elastomer and Talc powder, relatively. One of the common ways in joining metal to polymer uses adhesive. It has variety of benefits such as low distortion in joining, different materials joints and having joints with complex geometry. Welding...