Product Description
The HumiSeal® 1A27 LTX Conformal Coating is a single-component polyurethane coating designed for printed circuit board (PCB) protection. Formulated with reduced xylene and toluene concentrations, it ensures full compliance with GB30981-2020, which regulates VOC and solvent usage in conformal coatings. This isocyanate-free coating provides exceptional protection against moisture, corrosion, and contaminants, making it ideal for high-reliability electronics applications.
Features of HumiSeal® 1A27 LTX Conformal Coating
- Protecting PCBs from moisture, corrosive environments, and dirt.
- Ensuring low moisture vapor permeability for enhanced durability.
- Offering easy application with automated coating systems.
- Providing a range of pre-blended thinners for different application methods.
- Meeting GB30981-2020 compliance standards for VOC and solvent limits.
Applications of HumiSeal® 1A27 LTX Conformal Coating
- Printed Circuit Board (PCB) Protection: Offering long-term durability against harsh environments.
- Electronics & Industrial Coating: Providing strong chemical and moisture resistance.
- Automotive & Aerospace Electronics: Ensuring environmental and corrosion protection.
- Selective Coating Processes: Compatible with various automated application methods.
Prostech offers specialty materials (adhesives, tapes, thermal interface materials, insulating materials, sealants, PCB protection materials, …) along with manufacturing solutions. We proudly serve a wide range of industries and are an authorized distributor for leading global manufacturers of industrial materials and equipment. Our product range is designed to deliver customized solutions that address each customer’s unique needs. With years of experience and a successful project history, we are confident in our ability to provide comprehensive material solutions. These solutions effectively tackle the challenges manufacturers face. To explore our full product catalog, simply click here. Our dedicated team is ready to assist with: Moreover, Prostech ensures the safe and accurate global delivery of all materials, including “dangerous goods”, in compliance with legal regulations. For personalized technical support or to receive a quotation, please contact us today.About Prostech
Liquid Coating Properties
| Property | Value |
|---|---|
| Density (per ASTM D1475, g/cm³) | 0.93 ± 0.02 |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 50 ± 3% |
| Viscosity (CPS, per Fed-Std-141, Meth. 4287) | 1500 to 4000 |
| VOC (grams/litre) | 480 |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 30 minutes |
| Recommended Thinner | HumiSeal® Thinner 789, 600 |
| Shelf Life at Room Temperature (DOM) | 24 months |
Cured Coating Properties
| Property | Value |
|---|---|
| Recommended Coating Thickness (microns) | 25 – 75 |
| Optional Curing Conditions to Reach Optimum Properties | 30 days @ RT, 30 hours @ 76°C, 20 hours @ 88°C |
| Recommended Stripper | HumiSeal® Stripper 1063 |
| Thermal Shock (50 cycles per MIL-I-46058C) | -65°C to 125°C |
| Coefficient of Thermal Expansion (TMA) | 170 ppm/°C |
| Glass Transition Temperature (Tg – DSC) | 28°C |
| Modulus (DMA) | 18.1 MPa |
| 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 (1MHz, 25°C, ASTM D150-98) | 3.6 |
| Dissipation Factor (1MHz, 25°C, ASTM D150-98) | 0.02 |
| Insulation Resistance (per MIL-I-46058C) | 2.0 × 10¹⁴ ohms (200TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 1.2 × 10¹⁰ ohms (12GΩ) |
