How to glue Ethylene-acrylate rubber (EEA rubber)
How to bond Ethylene-acrylate rubber (EEA rubber)
Ethylene acrylic rubber has better heat resistance and low-temperature flexibility than polyacrylate rubber. Ethylene acrylic rubber also offers excellent resistance to water. This, together with its resistance to UV and ozone, gives it excellent weather resistance. These improvements are achieved while offering equivalent oil resistance as polyacrylate rubber. Other less notable improvements include improved resistance to oxidation, alkali, and acid compared to polyacrylate rubber. Ethylene acrylic rubber has poor resistance to non-mineral oil brake fluid, esters, or ketones. However, it offers excellent resistance to diesel fuel, kerosene, ethylene glycol, and water.
Ethylene acrylic rubber (EEA) is used in a variety of applications due to its specific properties. It is used for manufacturing fluid seals, gaskets, filters, O-rings, and door seals. In electrical applications, it is used for wire and cable insulation.
Ethylene acrylic rubber (EEA) is manufactured exclusively by DuPont under the trade name Vamac.
For many polymer materials, surface tension typically falls within the range of 20–40 dyn/cm. However, there is no specific value available for EEA, but this general range can be used as a guideline.
Bonding
Ensure that the surface of EEA is clean and free from dirt, oil, or grease. This may require the use of a non-aggressive cleaning agent.
Due to the nature of EEA, it may be beneficial to surface-treat with a primer or perform corona or plasma treatment. This improves the adhesive’s ability to bond to the material.
Choose an adhesive specifically designed to bond rubber and that has good adhesion to EEA.
- Cyanoacrylate adhesive can be an effective solution for bonding Ethylene Acrylic Rubber (EEA). It cures quickly upon contact with the surface and usually does not require priming of the EEA surface.
- Methyl methacrylate adhesive (MMA adhesive) is also suitable for bonding Ethylene Acrylic Rubber (EEA). MMA adhesives generally have good adhesion to various materials, including certain types of rubber and plastic, making them effective for EEA.
- UV-curing adhesives can be suitable for bonding Ethylene Acrylic Rubber (EEA) in certain applications. UV-curing adhesives cure instantly when exposed to UV light, making them ideal for fast bonding processes. It is important to select a UV-curing adhesive that is compatible with EEA’s specific chemical properties and surface requirements to achieve optimal bonding and durability.
Allow the EEA adhesive to cure completely according to the manufacturer’s recommendations before subjecting bonded parts to load or use.
After curing, you should test the bond strength, especially if it is to be used in critical or load-intensive applications.
Manufacturers
Vamac is a trade name owned by DuPont, which produces Ethylene Acrylic Rubber (EEA). DuPont, a global science and technology company, is known for its innovative materials and solutions in various industries, including rubber and polymers.
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