2538

Technical Data | January 2020 3M™ High-Temperature Masking Liquid 2538 Product Description 3M™ High-Temperature Masking Liquid 2538 is an olefin hybrid adhesive that is specially formulated to offer excellent high-temperature resistance and low slump during processing. This specially formulated hot melt adhesive removes cleanly from various electronic substrates by peeling even after 10 min @ 260°C (500°F). The non-silicone formulation reduces the potential for silicone contamination which can interfere with subsequent bonding or conformal coating processes. The high-temperature resistance adhesive also possesses excellent chemical resistance and should be considered for demanding chemical masking applications. Key Features • • • • • • • • Excellent conformability upon dispensing High-temperature slump resistance Good wet out on various substrates such as FR4, metals and glass Good chemical resistance to conformal coatings, acids and bases ingression Fast processing time Clean removal Stable dielectric properties Silicone free Product Construction/Material Description Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. 3M™ High -Temperature Masking Liquid 2538 Property Description Adhesive Size Color Olefin Hybrid 1 kilogram Translucent Applications • • Protection of sensitive areas and component on printed circuit boards during conformal coating processes Masking and sealing of electronic components Application Techniques • • Application Temperature: 170° to 200°C Application System: Hot melt dispensing equipment 3M™ High-Temperature Masking Liquid 2538 Typical Physical Properties and Performance Characteristics Note: The following technical information and data should be considered representative or typical only and should not be used for specification purposes. Final product specifications and testing methods will be outlined in the products Certificate of Analysis (COA) that is shipped with the commercialized product. 3M™ High-Temperature Masking Liquid 2538 Property Method* Typical Value Appearance Viscosity at 150°C Viscosity at 180°C Viscosity at 190°C Viscosity at 200°C Transparent 240 Pa·s 48 Pa·s 30 Pa·s 24 Pa·s Visual 3M TM-9047 3M TM-9047 3M TM-9047 3M TM-9047 *Methods listed as ASTM are tested in accordance with the ASTM method noted 3M™ High Temperature Masking Liquid 2538 Property Method* Value Hardness (Shore A) Tensile Elongation 3M TM-9040 ASTM D412 20 >700% Glass Transition Temperature Surface Resistivity Volume Resistivity Dielectric Constant (9 – 25 GHz) Dissipation Factor (9 – 25 GHz) Breakdown Voltage ASTM 7028 ASTM D257 ASTM D257 IEC 61189-2-721 IEC 61189-2-721 ASTM D149 -51°C 1.6E14 ohm/sq >1.0E16 ohm-cm 2.3 0.0007 38 KV/mm *Methods listed as ASTM or IEC are tested in accordance with the ASTM or IEC method noted Storage and Shelf Life The shelf life of 3M™ High-Temperature Masking Liquid 2538 is 24 months from the date of manufacture when stored in the original packaging materials and stored at 21°C (70°F) and 50% relative humidity. Certificate of Analysis (COA) The 3M Certificate of Analysis (COA) for this product is established when the product is commercially available from 3M. The commercially available product will have a COA specification established. The COA contains the 3M specifications and test methods for the products performance limits that the product will be supplied against. The 3M product is supplied to 3M COA test specifications and the COA test methods. Contact your local 3M representative for this product’s COA. Final product specifications and testing methods will be outlined in the products Certificate of Analysis (COA) that is shipped with the commercialized product. 3M™ High-Temperature Masking Liquid 2538 Safety Data Sheet: Consult Safety Data Sheet before use. Regulatory: For regulatory information about this product, contact your 3M representative. Technical Information: The technical information, recommendations and other statements contained in this document are based upon tests or experience that 3M believes are reliable, but the accuracy or completeness of such information is not guaranteed. Product Use: Many factors beyond 3M’s control and uniquely within user’s control can affect the use and performance of a 3M product in a particular application. Given the variety of factors that can affect the use and performance of a 3M product, user is solely responsible for evaluating the 3M product and determining whether it is fit for a particular purpose and suitable for user’s method of application. Warranty, Limited Remedy, and Disclaimer: Unless an additional warranty is specifically stated on the applicable 3M product packaging or product literature, 3M warrants that each 3M product meets the applicable 3M product specification at the time 3M ships the product. 3M MAKES NO OTHER WARRANTIES OR CONDITIONS, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OR CONDITION OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE OR ANY IMPLIED WARRANTY OR CONDITION ARISING OUT OF A COURSE OF DEALING, CUSTOM OR USAGE OR TRADE. If the 3M product does not conform to this warranty, then the sole and exclusive remedy is, at 3M’s option, replacement of the 3M product or refund of the purchase price. Limitation of Liability: Except where prohibited by law, 3M will not be liable for any loss or damage arising from the 3M product, whether direct, indirect, special, incidental or consequential, regardless of the legal theory asserted, including warranty, contract, negligence or strict liability. Electronics Materials Solutions Division 3M Center, Building 224-3N-11 St. Paul, MN 55144-1000 1-800-251-8634 phone 651-778-4244 fax www.3M.com/electronics 3M is a trademark of 3M Company. Please recycle. ©3M 2020. All rights reserved. 60-5005-0180-8