Chase Corporation, through our HumiSeal® and Resin Designs divisions, has spent the past decade preparing protection and reliability solutions for complex electronics. Notably, within the emerging EV market, we have identified needs within the assembly of EV motors where superior adhesion and protection are particularly critical.  

Adhesives in EV Motor Application 

It is critical to minimize mechanical fasteners and protective housings in EV motors due to weight considerations and the speed of assembly factors. Polymeric protectants and adhesives are ideal in these circumstances. There are a number of common applications for high-performance adhesives and coatings within EV motor assemblies.

These include: 

• Adhesion and potting for permanent magnets 
• Potting of weld points in copper stators 
• Adhesion of stator assemblies to housings 
• General gap filling
   

EV Motor Environmental Conditions/Testing 

As is common with many automotive components, many electronics (including EV motors) must withstand demanding environmental conditions over extended periods, often a decade or more, for warranty purposes. Adhesives must be tested under extreme stress to validate performance capabilities.

Testing includes: 

• Temperature range of -40C to 200C or more 
• Resistance to transmission fluids 

• Resistance to lubricating oils 

• Resistance to water and salt spray exposure 

• High bond strength to 8000 rpm 

   

Related Article: Polymers for Electric Vehicles

The Right Tool for the Job: HumiSeal 2E25 

HumiSeal 2E25 is a high-performance, two-component epoxy designed to withstand the conditions common to EV motor assembly. The material has a relatively long open time with a fast cure possible when exposed to elevated temperatures.  

As a supplier of electronics protection polymers and coatings, Chase Corporation and our employees can help with an unbiased approach to evaluating your application and process. We’ll show you how to maximize efficiency, minimize cost, and improve product reliability. Our outstanding manufacturing and technical support groups can provide your organization with reliable global supply, unmatched quality, and superior technical assistance. 

Please contact us today to discuss your application!