Rubber to metal bonding -pre-treatments

Further detail may be found in articles on Pre-treatment of metals prior to painting, Pre-treatment of copper, Thermal spray processes and Rubber to metal bonding - pre-treatments. 

As procedures for rubber to metal bonding involve a large number of steps (see Rubber to metal bonding basic techniques and Rubber to metal bonding pre-treatments),... 

Despite this success of silanes, which are easy to use and apply, their use as metal pre-treatments for bonding metals to rubber has been lacking. The only rubber-related use is as a treatment of rubber-grade silica [32, 33]. This process improves the adhesion of the silica to the rubber and therefore the mechanical rubber properties. There is only one patent that describes the use of a silane to bond bare steel cord (in other words not plated with brass) to sulphur-vulcanised tyre cord skim stocks, published by Sharma in 1982 [54]. Good adhesion was reported but only if the compound contained a certain resin. Apparently, the silane reacted more with the resin than with the rubber compound. 

Cyanoacrylates offer an unbeatable combination of speed, simplicity and strength particularly when faced with the need to join widely different materials. They will bond metals, plastics, ceramics, wood, leather, paper, cork and rubber in any combination without heat treatment and for most applications without the need for surface pre-treatment. 

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