Rubber To Metal Bonding

Rubber to metal bonding is an important industrial process that is used to manufacture many parts for automobiles and other applications to reduce vibration and noise as well as correct harmonic vibrations. This bonding method is also done to stabilize transitional movement in large buildings and other structures such as bridges. Typical rubber to metal bonding applications are: tire cord bonding, transmission belt bonding, engine and gearbox mounting, strut unit mounts for wheels, steering wheel joints with steering racks, arms in the suspension and steering, etc.

Ant type of rubber can be used and bonding can be done between rubber and items such as fabric, bronze, and sheet metal, etc. There are various types of bonding processes that are used such as: Cyanoacrylate bonding, waterborne bonding, post vulcanization, silicone rubber bonding, rubber to thermoplastics bonding, and cobalt bonding, etc.

The bonding agent is generally a kind of polymer/solvent solution which may have a top and bottom coat made from a mix of polymers and resins. However, in some instances people have bonded rubber to metal without the bonding material and just using the rubber and the metal. Metallic coagents can also be used in rubber to metal bonding and they are thought to create a stronger bond without any additional adhesives. With this method, the rubber needs to be prepared with the metallic coagents and cured against the metal surface. The metallic coagents will form an adhesive bond along with forming crosslinks in the rubber.

Important factors that should be considered while carrying out the bonding process are the substrate that is being used, the bonding agent and type of rubber. The substrate that is being used needs to be thoroughly to remove all traces of grease and dust before bonding. A slightly matte finish will give better adhesion. The main difference between bonding agents is that some of them are solvent-based and others are water-based. You will have to choose your bonding agent based on the type of rubber and metal you are using and what the product will be used for. Basically any type of metal that can handle the rubber to metal bonding process can be used.


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