THE ADHESIVE SOURCEBOOK - Hasmak.com.tr

potting &encapsulatingYour Source forpotting &encapsulating[ Table of Contents ]potting & encapsulating 107epoxies and polyurethanes 109silicones 113silicone equipment 115hot melts 116hot melts equipment 117Potting and encapsulating <strong>com</strong>pounds are used to providemechanical reinforcement to housed assemblies, to fill largevoids, and to protect <strong>com</strong>ponents from the effects of exposureto chemicals, moisture, mechanical shock, and vibration. Sealing<strong>com</strong>ponents with potting and encapsulating <strong>com</strong>pounds preventscorrosion and ensures long-term integrity of the device.Variables to consider when selecting apotting or encapsulating material include:• Viscosity of uncured <strong>com</strong>pound• Dispensing requirements• Device operating temperature• Desired chemical resistance• Desired thermal conductivity• Desired flame retardance• Hardness of cured product• Overall costThere are a variety of potting and encapsulating <strong>com</strong>poundsto choose from – epoxy, hot melt, silicone, and urethane.The thermal properties of epoxy and silicone systemsmake them ideally suited for applications exposed totemperatures above 257°F (125°C). If a soft, flexiblematerial is needed, particularly at low temperatures, thena urethane, silicone or hot melt material may be used.What is the best productfor my application?The following chart will work best when selecting a potting orencapsulating <strong>com</strong>pound. This chart is intended to serve as ageneral guideline to help you determine which categories arebest suited for your application. The data presented representstypical properties for each product category; however,individual product properties may differ. It is suggested that,based on the information provided, you consider at leastthe two best product categories that meet your applicationcriteria. Individual product information can then be found onthe pages that follow to help you narrow your search.Loctite ® Adhesives and Sealants Product Specialistsare available to assist you with new product designs,or to help you re-engineer an existing applicationfor improved performance and cost savings. Theycan also set up testing of your parts at the HenkelCustomer Engineering Center. For applicationassistance, call 1-800-LOCTITE (562-8483),within Canada call 1-800-263-5043, or contact usthrough the web at www.henkelna.<strong>com</strong>/loctite.STRAIGHT FROM The Source107U.S.: 1-800-LOCTITE (562-8483) Canada: 1-800-263-5043 www.henkelna.<strong>com</strong>/loctite www.equipment.loctite.<strong>com</strong>