Tips on 2-Stage Heat Cure

Published: June 6, 2018

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One method to encourage bubbles to come out of the bulk material is a 2-stage heat cure. This is a short, initial cure at an elevated, but lower, temperature than the final cure. An example is a 50°C cure for 30 minutes, for a product that has a final cure at 85°C. The effect of the initial elevated heat step is to expand any bubbles that are still in, or recently introduced into – by pouring, injecting, or otherwise filling a cavity – the epoxy, increasing their size and buoyancy, encouraging them to rise out of the epoxy and escape. This elevated heat step also lowers the viscosity of the epoxy, without strongly driving the curing reaction, further enabling any expanded bubbles to rise and escape from the epoxy.

Additional resources from the FOC team include:

Category Resource:
- FOC Epoxy Page
- FOC Beyond Fiber Specialty Products Page
View the Glossary, Acronyms, Military Specifications for Connectors
Q&A Resource: email technical questions to AskFOC@focenter.com

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Fiber Optic Center, Inc., (FOC), is an international leader in distributing fiber optic components, equipment and supplies and has been helping customers make the best cable assemblies in the world for over two decades. Several areas of specialization and expertise, in which they are the industry leader, make them the preferred choice for many of the world’s fiber professionals. In these key technology areas, FOC is "at least as technical as the manufacturer" about the products they sell. Striving to "make the business part easy," they offer outstanding and personal customer service, low or no minimum purchase order values, and from-stock delivery on industry-leading products and technology. FOC is the industry connection to the most innovative optical products, technologies and technical experts who integrate their manufacturing knowledge and vast experience into customers' worldwide operations. @FiberOpticCntr

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