HumiSeal® 1B73D Features
- Fast-Drying and Easy Application: Designed for efficient application and quick drying, streamlining the coating process for manufacturers.
- Bubble-Free Application: Specially formulated to minimize bubble formation when used with selective film coating equipment, ensuring a smooth and consistent finish.
- Excellent Flexibility and Electrical Properties: Protects PCAs with robust electrical insulation and flexibility, enhancing reliability and performance.
- UV Fluorescence for Inspection: Fluoresces under UV light, simplifying inspection and quality assurance processes.
- Easy Repairability: Simplifies maintenance with easy repair options, reducing downtime and costs.
- Same Base Acrylic Resin as HumiSeal® 1B73: Retains the proven performance advantages and comparable cured properties of HumiSeal® 1B73, with added benefits for modern application techniques.
- Industry Compliance: Fully compliant with RoHS Directive 2011/65/EU and recognized under UL File Number E105698, ensuring adherence to safety and environmental standards.
Why Choose HumiSeal® 1B73D?
HumiSeal® 1B73D offers the same trusted performance as HumiSeal® 1B73, with enhancements tailored to selective film coating applications. Its advanced properties, ease of use, and compliance with global standards make it the ideal choice for protecting printed circuit assemblies in demanding environments.
About Prostech
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:
- Provide quotation, sample, TDS/MSDS, and technical consultation
- Testing sample quality and verifying product compatibility in our laboratory
- Customizing material formulas for special applications
- Adapting product sizes, quantities, and packaging to meet specific needs
- Offering expert advice on suitable equipment and automation processes
- Delivering technical training and on-site support for optimal product use
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.
Properties Specific to HumiSeal® 1B73D or 1B73D/600 PB54
| Property | 1B73D | 1B73D/600 PB54 |
| Density (per ASTM D1475) | 0.92 ± 0.02 | 0.925 ± 0.025 |
| Solids Content (% by weight, per Fed-Std-141, Meth. 4044) | 29.5 ± 2 | 19 ± 2 |
| Viscosity (per Fed-Std-141, Meth. 4287) | 262 ± 20 | 54 ± 5 |
| VOC (grams/litre) | 661 | 749.2 |
Properties of HumiSeal® 1B73D and 1B73D/600 PB54
| Property | Value |
| Drying Time to Handle (per Fed-Std-141, Meth. 4061) | 30 minutes |
| 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 Thinner | HumiSeal® Thinner 73 |
| 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) | 67 ppm/°C |
| Glass Transition Temperature (DSC) | 42°C |
| Modulus (DMA) | 11.1 MPa |
| Flammability (per UL 94) | V-1 |
| Dielectric Withstand Voltage (per MIL-I-46058C) | >1500 volts |
| Dielectric Breakdown Voltage (per ASTM D149) | 6300 volts |
| Dielectric Constant (at 1MHz and 25°C, per ASTM D150-98) | 2.6 |
| Dissipation Factor (at 1MHz and 25°C, per ASTM D150-98) | 0.01 |
| Insulation Resistance (per MIL-I-46058C) | 5.5 x 10¹⁴ ohms (550TΩ) |
| Moisture Insulation Resistance (per MIL-I-46058C) | 7.0 x 10¹⁰ ohms (70GΩ) |
| Fungus Resistance (per ASTM G21) | Passes |
| Maximum Operating Temperature | 150°C |
