2708 3M | Alldatasheet

Document overview

  • Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 4

Technical content

3M™ Novec™ 2708 Electronic Grade Coating Construction Solids Solvent Color Container Size 8.0 wt% fluorinated polymer 3M™ Novec™ 7200 Engineered Fluid and <5% of PGMEA Yellow-Orange 1 gal (11 lbs/5 kg) Introduction 3M™ Novec™ 2708 Electronic Grade Coating is a single component fluorinated polymer diluted in 3M™ Novec™ 7200 Engineered Fluid, a segregated hydrofluoroether solvent, providing a low viscosity, low surface tension coating solution. Designed for moisture and corrosion protection of printed circuit boards and electronic components, it dries to an ultrathin, transparent coating with excellent hydrophobic and oleophobic properties. It does not need curing and is easy to apply. Novec 2708 coating is non- flammable, non-ozone-depleting, low in toxicity, low in GWP, RoHS compliant and is low VOC.* The coating contains a yellow- orange dye that is built into the polymer and designed to fluoresce under UV light to aid the inspection of the coating and quality control of the coating process. Table 1: Typical physical properties Not for specification purposes. All values @ 25°C unless otherwise specified. Properties Coating Solution Appearance Transparent, yellow-orange, liquid solution Solids 8.0 wt% fluorinated polymer Solvent 3M™ Novec™ 7200 Engineered Fluid and <5% of PGMEA Density 1.4 g/ml @ 23°C Viscosity 4.9 cP Boiling Point per ASTM D1120-94 79°C (174°F) Flash Point None (per closed cup method) Environmental Low in toxicity, low in GWP, non-ozone depleting, non-flammable, low VOC,* RoHS compliant, contains no chlorine or bromine Shelf Life Two years from date of manufacture in original unopened package Technical Data | April 2019 * The U.S. EPA defines a VOC as “any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates and ammonium carbonate, which participates in atmospheric photochemical reactions, except those designated by EPA as having negligible photochemical reactivity.”

Table 2: Typical physical properties Not for specification purposes. All values @ 25°C unless otherwise specified. Properties Fluorinated Polymer Coating Appearance Transparent, light yellow to orange (depending on thickness) Coating Thickness 0.4 - 5.0 microns (depending on application method) Solvent and Chemical Resistance Resists a variety of solvents and chemicals. Dissolves in acetone. Tg (Glass Transition Temperature) 53°C (127°F) Thermal Stability of Dry Film MIL-B-81744A Repellent to chlorinated silicone oil after 24 hours at 175°C Contact Angles (Static, Dip Coated/Dried on Glass Substrate) 105° (water), 65° (hexadecane) Refractive Index 1.38 Solder-Through Repairability Yes (see SDS for thermal decomposition products) Non-Flammable Meets UL 94 V-0 Coefficient of Thermal Expansion - TMA 88 µm/(m-°C) Thermal Conductivity 0.1 W/m*K Dielectric Constant @30% RH per ASTM D150 3.2 (@1kHz) Dissipation Factor @30% RH per ASTM D150 0.001 (@1kHz) Dielectric Breakdown Strength @20°C, 30% RH per ASTM D149 2500 V/mil *Measured contact angles can vary based on the type of surface, surface roughness and the application method. * The U.S. EPA defines a VOC as “any compound of carbon, excluding carbon monoxide, carbon dioxide, carbonic acid, metallic carbides or carbonates and ammonium carbonate, which participates in atmospheric photochemical reactions, except those designated by EPA as having negligible photochemical reactivity.” Can serve as:

  • Anti-migration coating for displays, spindle motors or lubricated electronic parts
  • Anti-corrosion coating for a variety of materials and components
  • Designed for moisture and corrosion protection of printed circuit boards and electronic components
  • Is UV (ultra violet) light detectable for easy identification of coating and quality control
  • Low surface energy allows lubricating oils, silicones, photoresist solutions, etc. to bead and drain freely from coated surfaces
  • Helps provide repellency and anti- wetting properties against liquids – water, hydrocarbons, silicones and photoresists
  • Helps protect against corrosive gases and vapors in addition to liquids
  • The polymer can endure up to 175°C for 24 hours and maintain repellency
  • Essentially insoluble in solvents such as heptanes, toluene and water
  • Adheres to a variety of materials (metals, glass, ceramics, polymers, composites, laminates)
  • Thermally and electrically stable with good dielectric properties
  • Easy to apply – dries quickly without the need for post-application curing
  • Excellent surface wetting, especially under low standoff SMT components
  • Allows solder-through repairability
  • Non-flammable, non-ozone-depleting, and low in toxicity
  • Low in global warming potential (GWP), RoHS compliant and and contains less than 5% volatile organic components (VOCs)*

Applications

Features

Helps provide:

  • Moisture, chemical and corrosion protection for printed circuit boards and their components
  • An easy and cost-effective alternative to conformal coatings
  • Anti-wetting, anti-stiction, anti-migration and anti-corrosion properties in many diverse applications

Safety, handling, storage and shelf life To avoid thermal decomposition, the coating solution should not be heated above 150°C (302°F), and the dried fluorinated polymer should not be heated to temperatures above 225°C (437°F), which, in general, is lower than the onset of thermal degradation under TGA test conditions. See SDS for thermal degradation products. When stored under conditions of 16- 27°C (60-80°F) and less than 60% R.H. in the original, unopened container, the shelf life is certified for two years from the date of manufacture. Before using this product, please read the current product Safety Data Sheet (available through your 3M sales or technical service representative or at www.3M.com/Novec) and the precautionary statement on the product package. Follow all applicable precautions and directions. Always practice smart and safe industrial hygiene practices. Do not spray apply without proper ventilation and/or personal protective equipment (PPE). Resources For more information on 3M Novec products or to contact a 3M representative, visit 3M.com/Novec. Application techniques Coating can be applied by dip, brush or selectively deposited as per the safety and handling requirements stated in the Safety Data Sheet (SDS). Water should be kept out of coating bath as contact will interfere with coating deposition. Surfaces to be coated should be clean and dry before application. Masking may not be required for larger connector types, but testing is always suggested. The solvent will evaporate quickly, and the fluorinated polymer film will dry in minutes. Application Options Spray, dip, brush and selective dispense Dilution Can be diluted with 3M™ Novec™ 7200 Engineered Fluid Drying/Curing Dries at room temperature; can be handled in under two minutes Removability 3M™ Novec™ 72DA Engineered Fluid (preferred) or removable with Novec 7200 Engineered Fluid

Electronics Materials Solutions Division 3M Center, Building 224-3N-11 St. Paul, MN 55144-1000 USA Web www.3M.com/novec Phone 1-800-810-8513 3M and Novec are trademarks of 3M Company. Used under license by 3M subsidiaries and affiliates. The 3M™ Novec™ Brand Family 3M™ Novec™ Engineered Fluids ■ 3M™ Novec™ Aerosol Cleaners ■ 3M™ Novec™ 1230 Fire Protection Fluid ■ 3M™ Novec™ Electronic Grade Coatings ■ 3M™ Novec™ Electronic Surfactants ■ 3M™ Novec™ Insulating Gases The Novec brand is the hallmark for a variety of proprietary 3M products. Although each has its own unique formula and performance properties, all Novec products are designed in common to address the need for smart, safe and sustainable solutions in industry-specific applications. These include precision and electronics cleaning, heat transfer, fire protection, protective coatings, immersion cooling, advanced insulation media replacement solutions and several specialty chemical applications. 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. Please recycle. Printed in USA. ©3M 2019. All rights reserved. Issued: 4/19 14883HB 60-5002-0521-0 Rev. D Smart. Safe. Sustainable.