Product Introduction: HumiSeal® 1R32A-2
HumiSeal® 1R32A-2 is a fast-drying, single-component acrylic conformal coating specially formulated to provide improved adhesion to substrates while offering excellent moisture and environmental protection for printed circuit assemblies. After full curing, it offers superior protection and durability, available in pre-blended variants for ease of use.
HumiSeal® 1R32A-2 Features:
- Enhanced adhesion to typical substrates
- Strong protection against moisture and contaminants
- Easy application with automated systems
- Low moisture vapor permeability
- Low odor during use
- Fluoresces under UV light for easy inspection and repair
- Easily removable with HumiSeal Strippers
- Compliant with REACH, RoHS Directive EU 2015/863, and IPC-CC-830
HumiSeal® 1R32A-2 Applications:
- Applied to cleaned substrates or low-residue “no clean” materials
- Pre-blended for immediate use without further dilution
- Contact HumiSeal for assistance with pre-blends and application equipment
About Prostech
Prostech Philippines is a one-stop solution provider for specialty materials and equipment across electronics manufacturing, from PCBA to final assembly. Our core material and equipment solutions include:
- PCB Assembly Materials
- Cleaning & Degreaser
- Circuit Board Protection
- Thermal Management Solutions
- EMI Shielding
- General Assembly Adhesives
- Elastomeric Materials
- Process Equipment: Potting & Coating Systems, UV/ Heat Curing, Plasma Treatment, Tape placement automation, and cleaning machines
Technical Added Value to customer
Prostech offers customized material and process equipment solutions with engineering support throughout R&D, production process optimization, and performance validation. Our in-house lab located in Alabang, Muntinlupa is equipped to conduct electronics material testing, application simulation, and adhesive validation, helping customers reduce the need for onsite trials and accelerate implementation.
International Supply Chain Advantage
Regional warehouse hubs across Vietnam, Singapore, Malaysia, and the Philippines ensure cross-border reliable supply. In Philippines PEZA-bonded warehouse located at Lima Industrial Park, Batangas enables Prostech to provide responsive, demand-based delivery and significantly shortens standard lead time for Philippines customers.
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Typical Properties
| Product | Viscosity (CPS) | Solids Content (%) | Density (g/cm³) | VOC (g/L) | Shelf Life (DOM, Months) |
| 1R32A-2 | 220 ± 30 | 29 ± 3 | 0.91 ± 0.02 | 646.1 | 24 |
| 1R32A-2 PB 65 | 65 ± 5 | 21 ± 1.5 | 0.93 ± 0.02 | 734.7 | 24 |
| 1R32A-2 PB 53 | 53 ± 5 | 19 ± 1 | 0.93 ± 0.02 | 753.3 | 24 |
| 1R32A-2/505 PB90 | 90 ± 5 | 25 ± 2 | 0.90 ± 0.02 | 675 | 12 |
| 1R32A-2/505 PB65 | 65 ± 5 | 24 ± 2 | 0.89 ± 0.02 | 676.4 | 12 |
| 1R32A-2/505 PB40 | 40 ± 5 | 21 ± 1 | 0.88 ± 0.02 | 695.2 | 12 |
| 1R32A-2/600 PB80 | 80 ± 5 | 23 ± 2 | 0.93 ± 0.02 | 716.1 | 12 |
| 1R32A-2/600 PB40 | 40 ± 5 | 18 ± 2 | 0.94 ± 0.02 | 770.8 | 12 |
| 1R32A-2/600 PB23 | 23 ± 5 | 14.5 ± 2.5 | 0.94 ± 0.02 | 803.7 | 12 |
| 1R32A-2/673S PB150 | 130 ± 20 | 27 ± 2 | 0.92 ± 0.02 | 671.6 | 12 |
| 1R32A-2/673S PB65 | 65 ± 5 | 24 ± 1.5 | 0.91 ± 0.02 | 691.6 | 12 |
| 1R32A-2/73 PB40 | 40 ± 5 | 19.5 ± 2 | 0.90 ± 0.02 | 724.5 | 12 |
| Specification | Value |
| Recommended Coating Thickness | 25 – 75 microns |
| Recommended Curing Conditions | 24 hrs @ RT or 2 hrs @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Stripper | HumiSeal® Stripper 1080, 1080EU |
| Thermal Shock, 50 cycles per MIL-I-46058C | -65°C to 125°C |
| Coefficient of Thermal Expansion - TMA | 170 ppm/°C below Tg, 340 ppm/°C above Tg |
| Glass Transition Temperature - DSC | 14°C |
| Modulus - DMA | 2000 MPa @ -40°C, 1050 MPa @ 20°C, 8.5 MPa @ 60°C |
| Flammability, per UL 94 | V-0 |
| 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 | 2.5 |
| Dissipation Factor, at 1MHz and 25°C, per ASTM D150 | 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 |
