Selecting the right material for bonding on rubber surfaces

Rubber is a widely-used material in an array of applications that often have very particular electrical, physical, chemical or thermal properties that allow them to comprehensively meet very specific user requirements. As such, adhesives must keenly satisfy these properties whilst also providing a strong bond with another surface and/or material.

Rubber can be bonded well with similar rubber materials as well as with dissimilar materials including glass, ceramic, plastics and metals. As each material has its own unique properties, selecting the correct bonding material for any given application and situation requires careful thought and comprehensive surface preparation.

Surface finish, chemical resistance, operating temperature, impact exposure and joint design are all important elements to consider. Additionally, you might also want to think about cure speed, strength, resilience, colour and conductivity when you are seeking out the ideal adhesive materials for your project.

Obtaining consistent rubber bonding

Surface preparation is key to optimising adhesion between different rubber surfaces. As this article explains, degreasing, chemical treatments and abrasion are all effective preparation techniques and in some instances, primers can also increase the capabilities and performance of bonding agents. It is important to carefully remove any dirt or grease as this can interfere with the adhesive and negatively impact its performance.

Adhesive bonding or mechanical fastening?

As adhesives will spread the load in a uniform fashion across a joint, stress is kept to a minimum. As well as being an ideal choice for weight reduction, adhesives are also extremely durable, deliver superior sealing capabilities and can overcome a variety of problems that are often associated with bonding irregular shapes.

Importantly, manufacturing techniques and adhesive technologies have advanced significantly in recent years. Until relatively recently, for example, metal bonding adhesive options had been limited in both number and performance. Polymer adhesives like http://www.ct1ltd.com/product-applications/metal-to-metal-adhesive/, have provided a viable alternative solution to bolting and drilling, and rubber bonding adhesives are also delivering valuable alternative solutions in a range of situations.

Uses for rubber bonding adhesives

The physical properties of rubbers make them a practical and desirable option for use in a variety of specialised industries including the medical, power, automotive, electrical and aerospace fields.

From valves and gears to pump linings, escalator handrails, vehicle tyres and weather stripping, the bonding of key rubber components plays a significant role in delivering peak performance despite demanding conditions.