STYCAST 2651 MM Two Component, Low Viscosity, General Purpose Epoxy Encapsulant

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1 Key Feature General purpose Machinability Low viscosity Product Description : Benefit Used in a wide variety of applications Casting can be cut, drilled and tapped easily Ease of use STYCAST 2651 MM is a two component, low viscosity, general purpose encapsulant. It can also be used effectively as an impregnant in certain applications. When fully cured, STYCAST 2651 MM has approximately the same physical and electrical properties as STYCAST STYCAST 2651 MM has been introduced to cover those applications where improved flowability is required. Instructions for catalyst addition, handling, and cure schedules are identical with those of STYCAST Colour is normally black, but colour coding is possible. Applications : STYCAST 2651 MM is used in a variety of electronic and electrical encapsulation applications. By incorporation of FILLER SC, it can be used as a dip coat for components. Instructions For Use : Thoroughly read the information concerning health and safety contained in this bulletin before using. Observe all precautionary statements that appear on the product label and/or contained in individual Material Safety Data Sheets (MSDS). Some filler settling is common during shipping or storage. For this reason, it is recommended that the contents of the shipping container be thoroughly mixed prior to use. Power mixing is preferred to ensure a homogeneous product. Accurately weigh resin and hardener into a clean container in the recommended ratio. Weighing apparatus having an accuracy in proportion to the amounts being weighed should be used. Blend components by hand, using a kneading motion, for 2-3 minutes. Scrape the bottom and sides of the mixing container frequently to produce a uniform mixture. If possible, power mix for an additional 2-3 minutes. Avoid high mixing speeds which could entrap excessive amounts of air or cause overheating of the mixture resulting in reduced working life. To ensure a void-free embedment, vacuum deairing should be used to remove any entrapped air introduced during the mixing operation. Vacuum deair mixture at 1-5 mm mercury. The foam will rise several times the liquid height and then subside. Continue vacuum deairing until most of the bubbling has ceased. This usually requires 3-10 minutes. To facilitate deairing, gentile warming will also help, but working life will be shortened. Reduced viscosity provides easy air release upon standing for a few minutes. Pour mixture into cavity or mold. Gentle warming of the mold or assembly reduces the viscosity. This improves the flow of the material into the unit having intricate shapes or tightly packed coils or components. Further vacuum deairing in the mold may be required for critical operations. To ensure the long term performance of the potted or encapsulated electrical / electronic assembly, complete cleaning of components and substrates should be performed to remove contamination such as dust, moisture, salt, and oils which can cause electrical failure, poor adhesion or corrosion in an embedded part. Page 1 of 5

2 STYCAST 2651 MM Page 2 of 5 Properties Of Material As Supplied : Chemistry Epoxy Appearance TP-76W Blue liquid Density TP-13W g/cm³ 1,61 Brookfield Viscosity TP-10W 5 rpm # 6 Pa.s Choice Of Curing Agents : Curing Agent Description General purpose with good chemical resistance and physical strength Low colour, low viscosity. Excellent, thermal shock and impact resistance. Excellent low temperature properties and adhesion to glass. Long pot life, excellent chemical resistance, good physical and chemical properties at elevated temperatures Type of Cure Room Room Heat Viscosity 0,080 to 0,100 0,030 0,040 0,250 0,300 (Pa.s) TP-10W Density (g/cm³) TP-13W 0,5 1,05 1, ,00 1,10 Properties Of Material As Mixed: Mix Ratio Amount of Catalyst per 100 parts of STYCAST 2651 MM By Weight By Volume ,5 13 Working Life (100 25) ERF minutes 30 minutes 2 hours Europe North America Asia-Pacific Nijverheidsstraat 7 46 Manning Road 100 Kaneda, Atsugi-shi B-2260 Westerlo Billerica, MA Kanagawa-ken, 243 Belgium Japan +(32)-(0) (78) (81) Fax: +(32)-(0) Fax: (78) Fax: (81) NATIONAL STARCH MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, CONCERNING THE SUITABILITY OF THESE MATERIALS FOR USE IN IMPLANTATION IN THE HUMAN BODY, OR FOR ANY OTHER USE. These materials are not designed or manufactured for use in implantation in the human body. National Starch has not performed clinical testing of these materials for implantation. National Starch has neither sought, nor received, approval from the FDA for the use of these materials in implantation in the human body. No representative of ours has any authority to waive or change the foregoing provisions but, subject to such provisions, our engineers are available to assist purchasers in adapting our products to their needs and to the circumstances prevailing in their business. Nothing contained herein shall be construed to imply the non-existence of any relevant patents or to constitute a permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of this patent. We also expect purchasers to use our products in accordance with the guiding principles of the Chemical Manufacturers Association s Responsible Care program National Starch & Chemical Company

3 Cure Schedule : Cure at any of the recommended cure schedules. For optimum performance, follow the initial cure with a post cure of 4-6 hours at the highest expected use temperature. Alternate cure schedules may also be possible. Contact your local Emerson & Cuming Technical Representative for further information. Temperature () Cure Time h 24 h h 4 6 h h 2 4 h h Physical Properties Of Material After Application : Hardness TP-4W Shore D TMA TP-525W Tg CTE 1 ppm/k CTE 2 ppm/k DMA 1 DMA 2 E-Modulus Tg at tangens-delta Tg at onset point at 35 at 50 at 100 at Weight Loss TP-506W at 150 at 200 at 250 at 300 at 700 0,04 0,18 0,2 0,55 47,7 0,33 0,4 0,54 0,7 4,7 0,06 0,1 0, 0,38 50,6 Thermal Conductivity Ohm.cm 0,6 0,6 0,6 Linear Shrinkage TP-547W 0,57 0,72 0,3 Water Absorption TP-546W after 1 day at RT after 7 days at RT after 1 h at 100 0,02 0,07 0,20 0,14 0,3 0,55 0,04 0,11 0,13 Page 3 of 5

4 STYCAST 2651 MM Page 4 of 5 Electrical Properties Of Material After Application : Surface Resistivity TP-544W Ohm,3 x 10E15 1,8 x 10E15,3 x 10E16 Volume Resistivity TP-544W Ohm.cm 2,6 x 10E15 1, x 10E15 4,4 x 10E15 Dielectric Constant TP-545W at 50 Hz at 1 khz at 1 MHz 5,0 5,1 4,7 4,6 4,8 4,3 4, 5,0 4,7 Dissipation Factor Service Temperature TP-545W at 50 Hz at 1 khz at 1 MHz Continuous Intermittent 0,011 0,010 0, ,007 0,008 0, ,01 0,005 0, Storage And Handling : The shelf life of STYCAST 2651 MM is 12 months when stored between 18 and 25. For best results, store in original, tightly covered containers. Storage in cool, clean and dry areas is recommended. Usable shelf life may vary depending on method of application and storage conditions. Storage Temperature Usable Shelf Life () 18 to 25 1 year Europe North America Asia-Pacific Nijverheidsstraat 7 46 Manning Road 100 Kaneda, Atsugi-shi B-2260 Westerlo Billerica, MA Kanagawa-ken, 243 Belgium Japan +(32)-(0) (78) (81) Fax: +(32)-(0) Fax: (78) Fax: (81) NATIONAL STARCH MAKES NO REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, CONCERNING THE SUITABILITY OF THESE MATERIALS FOR USE IN IMPLANTATION IN THE HUMAN BODY, OR FOR ANY OTHER USE. These materials are not designed or manufactured for use in implantation in the human body. National Starch has not performed clinical testing of these materials for implantation. National Starch has neither sought, nor received, approval from the FDA for the use of these materials in implantation in the human body. No representative of ours has any authority to waive or change the foregoing provisions but, subject to such provisions, our engineers are available to assist purchasers in adapting our products to their needs and to the circumstances prevailing in their business. Nothing contained herein shall be construed to imply the non-existence of any relevant patents or to constitute a permission, inducement or recommendation to practice any invention covered by any patent, without authority from the owner of this patent. We also expect purchasers to use our products in accordance with the guiding principles of the Chemical Manufacturers Association s Responsible Care program National Starch & Chemical Company

5 Health & Safety : It is recommended to consult the Emerson & Cuming product literature, including material safety data sheets, prior to using Emerson & Cuming products. These may be obtained from your local sales office. Attention Specification Writers : The technical information contained herein is generally consistent with the properties of the material and should not be used in the preparation of specifications, as it is intended for reference only. This technical information has been derived from one batch of material and may not exactly match the properties of each individual delivered batch. For assistance in preparing specifications, please contact your local Emerson & Cuming office for details. Please contact Emerson & Cuming Quality Assurance for test method details. (STYCAST is a registered trademark of National Starch and Chemical Company) E12203/2004-LM/JS/R&D Page 5 of 5