HumiSeal? 1R32 Acrylic Conformal Coating

Technical Data Sheet

HumiSeal? 1R32 is a fast drying, single component acrylic conformal coating that provides excellent moisture and environmental protection for printed circuit assemblies. HumiSeal? 1R32 fluoresces under UV light for ease of inspection and is easily repaired. HumiSeal? 1R32 is in full compliance with the RoHS Directive 2002/95/EC.

Properties of HumiSeal? 1R32

                                                                                                       Density, per ASTM D1475                                                                    0.91 ± 0.02 g/cm³

                                                                                                       Solids Content, % by weight per Fed-Std-141, Meth. 4044                  35 ± 2 %

                                                                                                       Viscosity, per Fed-Std-141, Meth. 4287                                               220 ± 30 centipoise

                                                                                                       VOC                                                                                                      600 grams/litre

                                                                                                       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

                                                                                                       Thinner (dipping & brushing)                                                                 HumiSeal? Thinner 505

                                                                                                       Recommended Thinner (spraying)                                                        HumiSeal? Thinner 521

                                                                                                       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 Tg

                                                                                                       Glass Transition Temperature - DSC                                                  14°C

                                                                                                       Modulus - DMA                                                                                    2000 MPa @ -40°C

                                                                                                                                                                                                                                 1050 MPa @ 20°C

                                                                                                                                                                                                                     8.5 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)