Molded Epoxy

The majority of cast and molded epoxy components are for electrical applications. C-K Composites has several proprietary formulations of epoxy resins, hardeners, accelerators and fillers.
Metal conductors and other metal inserts are included as an integral part of the casting. Flanges, holes and “other-than-round” cross sections can be molded. Therefore, a properly designed single epoxy casting or molding can often replace an assembly of parts of other materials such as porcelain, high-pressure laminates, tapes and metals.
Design assistance
Using computerized electrical field analysis, our engineers will work with you to design your component, the mold, conductors, or other inserts to meet your performance requirements.
C-K offers design assistance to customers covering not only part design but mold design as well. Since many technical issues in part and mold design are interrelated. The most common approach is for C-K to design and purchase the mold on the customer’s behalf, with C-K being responsible for the mold producing the specified part.
Bis-a, and Cycloaliphatic systems available
C-K’s cycloaliphatic resin systems produce insulators which are nontracking, self-scouring and nonweathering for out door applications. C-K’s Bisphenol resin systems produce extremely high strength insulators.
Vacuum Casting
Many cast and molded epoxy parts are poured and processed in a vacuum to minimize voids and assure a strong bond between epoxy and metal. C-K has extensive equipment for performing vacuum casting, including large capacity vacuum pumps and vacuum chambers. Finished parts are oven cured to achieve specified mechanical properties. Final operations include careful cleaning, inspection, and testing.
APG-Liquid Injection Molding
In addition to conventional and vacuum casting, C-K has the equipment and capability to perform epoxy automatic pressure gelation (APG). This process used heat and pressure, to achieve rapid cure time and productivity. C-K has produced tens of thousands of bushings, spouts,
and insulators using APG which is best suited for parts with a high production volume. C-K has several large-capacity molding machines for perfuming APG.
Re-Engineering Projects
C-K can assist in your effort to replace bushings and porcelains that are no longer manufactured. C-K has the ability to reverse engineer, replicate and replace your original insulators, design and tested thru 46kV class.
Technical Data:
Bushing Selection Guide
Cast & Molded Epoxy Data
Electrical Standoff Insulator