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Aerosol 1B31
Model No: 1B31

HumiSeal® 1B31 Acrylic Conformal Coating is a one component, fast curing acrylic coating that is used for circuit assemblies and dispensed from an aerosol can. It is environmentally safe and fluoresces under UV light to aid inspection.

 Product Enquiry

HumiSeal® 1B31 aerosol conformal coating is:

  • an acrylic chemistry
  • fast drying
  • single component
  • MIL-I-46058C qualified, IPC-CC-830 and RoHS Directive 2011/65/EU compliant

 

HumiSeal® 1B31 aerosol conformal coating has:

  • excellent moisture and environmental protection for printed circuit assemblies
  • excellent flexibility
  • fluorescence under UV light for ease of inspection
  • rework ability with ease
  • RoHS Directive 2002/95/EC compliance

 

Application of HumiSeal® 1B31 aerosol Conformal Coating

  • Allow 48 hours minimum to reach room temperature before using cans stored or received during cold weather.
  • When applied in conditions of high ambient humidity, blushing (cloudy white film) may appear.  Heating the coated assembly in an oven for 1/2 hour at 76°C eliminates this condition.
  • Surface must be cleaned of dirt, wax, grease, flux residues and all similar contaminants for successful application of the coating.
  • Mask areas not requiring coating from overspray using suitable non-silicone masking methods or materials.
  • Shake can vigorously before using and repeat frequently during use.
  • Best results are obtained by spraying from a distance of 30 – 40 cm in light even coats.   A film thickness of 25 – 75 microns is sufficient to provide protection.
  • To clean nozzle after use, hold can upside down, then press nozzle for a few seconds.

 

Specification:

Product Specification

Density, per ASTM D1475

0.91 ± 0.02 g/cm3

Solids Content, % by weight per Fed-Std-141, Meth. 4044

12 ± 1 %

VOC

537 grams/liter

Drying Time to Handle per Fed-Std-141, Meth. 4061

10 minutes

Recommended Coating Thickness

25 – 75 microns

Recommended Curing Conditions

24 hrs @ RT or 30 min @ 76°C

Time Required to Reach Optimum Properties

7 days

Recommended Stripper

Humiseal® Stripper 1080

Shelf Life at Room Temperature, DOM

24 months

Thermal Shock, 50 cycles per MIL-I-46058C

-65°C to 125°C

Coefficient of Thermal Expansion – TMA

170 ppm/°C below Tg340 ppm/°C above Tg

Glass Transition Temperature – DSC

14°C

Modulus – DMA

2000 MPa @ -40°C1050 MPa @ 20°C8.5 MPa @ 60°C

Dielectric Withstand Voltage, per MIL-I-46058C

>1500 volts

Dielectric Breakdown Voltage, per ASTM D149

7500 volts

Dielectric Constant, at 1MHz and 25°C per ASTM D150-98

2.5

Dissipation Factor, at 1MHz and 25°C per ASTM D150-98

0.01

Insulation Resistance, per MIL-I-46058C

8.0 x 1014 ohms (800TΩ)

Moisture Insulation Resistance, per MIL-I-46058C

6.0 x 1010  ohms (60GΩ)

Fungus Resistance, per ASTM G21

Passes