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3M™ Novec 2704

1 of 2 products in this brand
3M™ Novec 2704 is a single component fluorinated polymer that has been diluted in 3M™ Novec™ 7200 Engineered Fluid, a segregated hydrofluoroether solvent, to produce a low viscosity, low surface tension coating solution. It dries to an ultrathin, transparent coating with excellent hydrophobic and oleophobic properties, making it ideal for moisture and corrosion protection of printed circuit boards and electronic components. It does not require curing and is simple to apply. The Novec 2704 coating is nonflammable, non-ozone depleting, low in toxicity, low in GWP, RoHS compliant, and low in VOC. The coating contains a yelloworange dye that is built into the polymer and designed to fluoresce under UV light to aid in coating inspection and quality control.

Product Type: 1K (1 component) Coating

Features: Corrosion Resistant, Excellent Moisture Resistance, Fast Drying, Good Electrical Properties, Good Thermal Stability, Hydrophobic, Low Toxicity, Ozone Resistant

Application Area: Printed Electronics

Application Method: Brush, Dip Coating, Spray

Chemical Family: Fluoropolymers

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Chemical Family

Features & Benefits

Features

• 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 antiwetting properties against liquids – water, hydrocarbons, silicones and photoresists
• Helps protect against corrosive gasses 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 & Uses

Application Area
Application Method
Applications

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
Can serve as:
• Anti-migration coating for displays, spindle motors or lubricated electronic parts
• Anti-corrosion coating for a variety of materials and components
Application techniques
Coating can be applied by spray, dip, brush or selectively deposited as per the safety and handling requirements. 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

Properties

Physical Form
Appearance
Transparent. Yellow-Orange. Liquid Solution, Transparent. Light Yellow to Orange (Depending on Thickness).
Typical Physical Properties
ValueUnitsTest Method / Conditions
Solids (Fluorinated Polymer)4.0wt%
Density (23°C)1.41g/ml
Viscosity1.75cP
Boiling Point78.0°CASTM D1120-94
Flash Point (Per Closed Cup Method)None
Coating Thickness (Depending on Application Method)0.1 - 4.0 microns
Solvent and Chemical ResistanceResists a variety of solvents and chemicals. Dissolves in acetone.
Glass Transition Temperature (Tg)53.0°C
Thermal Stability of Dry Film Repellent to Chlorinated Silicone Oil After 24 hours)175.0°CMIL-B-81744A
Contact Angles (Static, Dip Coated/Dried on Glass Substrate, Water)105.0°
Contact Angles (Static, Dip Coated/Dried on Glass Substrate, Hexadecane)65.0°
Refractive Index1.38
Non-FlammableMeets UL 94 V-0
Coefficient of Thermal Expansion - TMA88.0μm/(m·°C)
Thermal Conductivity0.1W/m*K
Dielectric Constant (30% RH, 1kHz)3.2ASTM D150
Dissipation Factor (30% RH, 1kHz)0.001ASTM D150
Dielectric Breakdown Strength (20°C, 30% RH)2500.0V/milASTM D149
Solder-Through Repairability (Thermal Decomposition Products)

Yes (see SDS for thermal decomposition products)

Solvent

3M™ Novec™ 7200 Engineered Fluid and <5% of PGMEA

Safety & Health

Environmental

Low in toxicity, low in GWP, non-ozone depleting, non-flammable, low VOC,* RoHS compliant, contains no chlorine or bromine

Packaging & Availability

Construction
Solids Solvent Color Container Size
4.0 wt% fluorinated polymer 3M™ Novec™ 7200 Engineered Fluid and <5% of PGMEA Yellow-Orange
1 gal (11 lbs/5kg)

Storage & Handling

Shelf Life

Two years from date of manufacture in original unopened package

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. 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).