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Scotchcast TM Electrical Resin 260 One-Part, Class H, General Purpose Epoxy Powder Resin

 Fast curing Scotchcast resin 260 is manufactured by a fusion blend  Excellent electrical properties process, insuring that each individual particle of powder  Excellent thermal shock and impact resistance contains all the components necessary to effect a complete  Excellent heat, chemical and moisture resistance cure and attain stated performance properties.  Good cut-through resistance  Excellent flow Resin 260 is applied to an object that has been heated to a  UL 1446 and IEC 85 Electrical Insulation System (EIS) temperature above the melting point of the resin. On approval at class 120 (E), 130 (B), 155 (F) and 180 (H). contact with the preheated application surface, the resin melts, flows to a controlled extent, then cures, bonding to  Also available as Scotchcast 260 CG, a coarse ground the substrate and coalescing into a smooth, continuous, version for improved electrostatic spray applications. essentially uniform, thick coating. It effectively coats flat surfaces and corners, as well as high points. Uses for 3MTM ScotchcastTM Electrical Resin 260 is a widely used, Scotchcast resin 260 include moisture proofing and well-known general purpose powder epoxy resin. A one- insulating armatures, stators, buss bars and toroid cores. part, green pigmented, rapid heat-curing product, it is designed to provide a continuous, tough, moisture and chemical resistant dielectric coating to a variety of substrates.

Typical Properties* Property Value Colour Green Specific Gravity1 (cured) 1.43 Electric Strength3 – 250 to 375 microns or 12 to 15 mil coating 39,4 kV/mm or 1000 V/mil Thermal Shock2 – 10 cycles – 75oC to 155oC 250 to 375 microns, 3.2mm sandblasted steel panel Passes Impact Resistance2 250 to 375 microns, 3.2mm sandblasted steel panel Gardner 15.9mm Radius Impact Tester 11.3 N/m Cut-Through Resistance2 – 504g wt; 18 awg wire 215oC (410oF) Abrasion Resistance2 – Removed from 250 to 375 microns coating .08 grams Edge Coverage2 – 250 to 375 microns coating on flat 35 – 45% Gel Time2 @ 193oC hot plate 12 – 16 seconds

*Not recommended for specification purposes. Product specifications will be provided upon request

Test Methods 1 – ASTM D-792 2 – 3M Test Method 3 – ASTM D-149 Usage Information Handling and Safety Precautions Read all Health Hazard, Precautionary, and First Aid Method of Application statements found in the Material Safety Data Sheet and/or The rapid cure of ScotchcastTM Resin 260 permits the use of product label of chemicals prior to handling or use. high-speed production methods. The power can be readily applied by spraying techniques as well as through the use of Storage fluid bed dipping of preheated parts. Automated and manual Laboratory evaluation indicates that the usable shelf life of types of application equipment are both available. this product is twenty four months (24) from the date of Equipment manufacturers names can be suggested upon manufacture when stored at temperatures not exceeding request. 27oC (80oF), providing the material is stored in its original container. Care should be taken when removing resin form Curing the original shipping container to prevent inclusion of The cure of resin 260 to a thermoset condition is a foreign material. After resin removal, the bag should be time/temperature relationship. The retained heat in retired immediately. This will help to avoid agglomeration application units having high capacity is sufficient in many caused by excess moisture. For best results, store in a cool, cases to effect a cure of the resin without the need for post- dry place. curing facilities. For example, if an application surface can retain a temperature of 204oC (400oF) for 30 seconds after Insulation System coating, it will be fully cured. Small articles, or those with Scotchcast resin 260 has undergone extensive thermal large surfaces-to-mass ratio, lose heat rapidly and may testing, and has UL 1446 and IEC 85 system approval as require a higher preheat temperature and/or additional oven- major insulation for use in motor, transformer and coil curing. constructions for continuous use at class H (180oC) temperature. The product is listed by UL under File Number The figures below represent nominal guidelines for E163090, system Designation 3M 180-1. obtaining the resin’s adhesion, impact and chemical resistance characteristics. To achieve Underwriters Laboratories and the International Electrochemical Commission (IEC) requirements Cure Temperature Time component construction must meet UL and IEC 149oC (300oF) 30 minutes specifications and conditions of acceptability for proper and 177oC (350oF) 10 minutes safe use of the component or product. 204oC (400oF) 30 seconds 232oC (450oF) 20 seconds

Time does not include that required to reach the cure temperature. The user must determine the time required for the coated substrate to reach listed temperatures.

Preheated Temperature Range Prior to applying resin 260, the part must be preheated to a Important Notice o o o o Technical information provided by 3M is based on experience and/or tests temperature ranging from 150 C (302 F) to 260 C (500 F). believed to be reliable but their accuracy is not guaranteed and the results The optimum preheat temperature depends upon the size, may not be relevant to every user’s application. heat capacity and configuration of the object to be coated, as For this reason 3M does not accept responsibility or liability, direct or well as the method of application. The ideal coating consequential, arising from reliance upon any information provided and the user should determine the suitability of the products for their intended use. temperature will vary for each application and is best Nothing in this statement will be deemed to exclude or restrict 3M’s liability for determined by experimentation. death or personal injury arising from its negligence.

All questions of liability relating to 3M products are governed by the seller’s terms of sale subject where applicable to the prevailing law.

If any goods supplied or processed by or on behalf of 3M prove on inspection to be defective in material or workmanship, 3M will (at its option) replace the same of refund to the Buyer the price of the goods or services. Except as set out above, all warranties and conditions, whether express or implied, statutory or otherwise are excluded to the fullest extent permissible at law.

3M is a trademark. Printed in the UK. Copyright 3M United Kingdom PLC

3M Electronics & Insulation Group 3M United Kingdom PLC 3M Ireland 3M Belgium N.V.S.A. 3M Netherland B.V. 3M HOUSE, P.O. Box 1 3M House, Adelphi Centre Hermeslaan 7 P.O. Box 193 Market Place, Bracknell Upper Georges Street B-1831 Diegem 2300 AD Leiden Berkshire RG12 1JU Dun Laoghaire, Co. Dublin Belgium The Netherlands Tel: +44 1344 858000 Tel: +353 1 2803555 Tel: +32 2 722 5276 Tel: +31 71 545 0364 Fax: *44 1344 858278 Fax: +353 1 2803509 Fax: +32 3 722 5012 Fax: +31 71 545 0378