Hi guys,
Any idea to bond between EPDM sheet and Stainless steel sheet . We found EPDM sheet can do surface treatment to get rough surface. Any recommend surface treatment for stainless Steel . Please share your thoughts.
mail4a2z,
Welcome to Eng-Tips.
Showing your picture in the post so that people can see it, rather than forcing people to download a file, attracts more responses.
Here is your drawing:
You could be talking to an application engineer at either 3M or Hysol/Loctite/Henkel/whatever they're called now to get a recommendation that will include important details like surface preparation.
I can suggest some expensive aerospace structural adhesives that will definitely bond to SS, such as Hysol EA9309.NA, but they're usually very stiff. I don't know for sure if it will work with EPDM, but it probably will. Need to know more information if something less expensive will do.
Can you say if the SS part in your design will have to flex? If so, how much? Trying to estimate the amount of displacement in the joint will give you some upper bound to the modulus of the adhesive you can accept.
Thermal range?
Moisture?
The more you can tell, the better the answers will be.
No one believes the theory except the one who developed it. Everyone believes the experiment except the one who ran it.
STF
Surface roughness is NOT the mechanism of adhesion. It is a chemical bond at the interface that provides both short-term strength and long term bond survival. The mechanism of bond degradation is hydration of oxide layers at the metal interface, and this is vital for the stainless interface. It is not all about the adhesive. The surface prep is far more important. And please don't believe the hype from adhesive salesmen that you just need a clean, rough surface. The surface must be clean, but also must be chemically active and then treated to provide hydration resistance. Silanes are best for that but must be applied while the surface is chemically active.
The EDPM may not need chemical treatment, but please recognise that you must bond while the surface is chemically active. In other words bond as soon as possible.
I just posted this link in the rubber forum in reply to a question on rubber bonding. It is a review article on rubber/metal bonding. Blakmax, I think you may find it interesting.
A contactor is an electrical device used for switching an electrical circuit on or off. Considered to be a special type of relay, contactors are used in applications with higher current carrying capacity, while relays are used for lower current applications. Download Now
Eight years into its development, PTC’s Creo Parametric continues to expand its toolset, making computer-aided design (CAD) easier and more efficient. Download Now
This research report, based on a survey of 234 product development professionals, examines the current state of Internet of Things (IoT) adoption by product design teams, its perceived importance, and what features and capabilities teams consider important when making decision about adding IoT functionality to their products. Download Now
The term Industry 4.0 denotes a cluster of technologies that’s poised to
fundamentally reshape manufacturing and bring about a new industrial
revolution. These include 3D printing
(AM), the Industrial Internet of Things (IIoT), artificial intelligence (AI) and
mixed reality technologies, more commonly known as virtual reality (VR) and
augmented reality (AR). Download Now
Talk To Other Members
RE: EPDM and Stainless steel bonding
Welcome to Eng-Tips.
Showing your picture in the post so that people can see it, rather than forcing people to download a file, attracts more responses.
Here is your drawing:
You could be talking to an application engineer at either 3M or Hysol/Loctite/Henkel/whatever they're called now to get a recommendation that will include important details like surface preparation.
I can suggest some expensive aerospace structural adhesives that will definitely bond to SS, such as Hysol EA9309.NA, but they're usually very stiff. I don't know for sure if it will work with EPDM, but it probably will. Need to know more information if something less expensive will do.
Can you say if the SS part in your design will have to flex? If so, how much? Trying to estimate the amount of displacement in the joint will give you some upper bound to the modulus of the adhesive you can accept.
Thermal range?
Moisture?
The more you can tell, the better the answers will be.
No one believes the theory except the one who developed it. Everyone believes the experiment except the one who ran it.
STF
RE: EPDM and Stainless steel bonding
Surface roughness is NOT the mechanism of adhesion. It is a chemical bond at the interface that provides both short-term strength and long term bond survival. The mechanism of bond degradation is hydration of oxide layers at the metal interface, and this is vital for the stainless interface. It is not all about the adhesive. The surface prep is far more important. And please don't believe the hype from adhesive salesmen that you just need a clean, rough surface. The surface must be clean, but also must be chemically active and then treated to provide hydration resistance. Silanes are best for that but must be applied while the surface is chemically active.
The EDPM may not need chemical treatment, but please recognise that you must bond while the surface is chemically active. In other words bond as soon as possible.
Regards
Blakmax
RE: EPDM and Stainless steel bonding
Regards,
Mike
The problem with sloppy work is that the supply FAR EXCEEDS the demand
RE: EPDM and Stainless steel bonding
RE: EPDM and Stainless steel bonding
Can you post the link?
Blakmax
RE: EPDM and Stainless steel bonding
http://www.polymerjournals.com/pdfdownload/834235....