Product Introduction
HumiSeal® 1B31 LTX is a fast-drying acrylic conformal coating that provides excellent protection against moisture, corrosive environments, and dirt. It complies with strict VOC and solvent usage standards, ensuring reliability in harsh conditions.
1B31 LTX Features
- Superior moisture and corrosion resistance
- Fast curing and drying
- Low moisture vapor permeability
- Fluoresces under UV light for easy inspection
- Compliant with GB30981-2020
1B31 LTX Applications
- Protecting electronics from harsh environments
- Coating for printed circuit boards
- Suitable for high-performance electronic assemblies
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.
Need help selecting the right product or solution?
| Product | Viscosity | Solids | Density | VOC** |
| (CPS) | (%) | (g/cm3) | (g/L) | |
| 1B31 LTX | 200 ± 15 | 35 ± 3 | 0.91 ± 0.02 | 592 |
| 1B31 LTX/600 PB120 | 120 ± 5 | 29.5 ± 1.5 | 0.92 ± 0.02 | 649 |
| 1B31 LTX/789 PB120 | 120 ± 5 | 31.5 ± 1.5 | 0.89 ± 0.02 | 610 |
| 1B31 LTX/600 PB65 | 65 ± 5 | 23.5 ± 1.5 | 0.90 ± 0.02 | 689 |
| 1B31 LTX/789 PB65 | 65 ± 5 | 26.5 ± 1.5 | 0.87 ± 0.02 | 639 |
| Product Specification | |
| Recommended Coating Thickness | 25 – 75 microns |
| Drying Time to Handle per Fed-Std-141, Meth. 4061 | 10 minutes |
| Recommended Curing Conditions | 24 hrs @ RT or 30 min @ 76°C |
| Time Required to Reach Optimum Properties | 7 days |
| Recommended Stripper | HumiSeal® Stripper 1080 |
| 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 |
| 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 |
