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8822
Taile
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8822 A/B is a two-component polyurethane potting compound with 1:1 weight mixing ratio. It features low viscosity and excellent fluidity for filling complex narrow gaps. After curing, it forms a flexible black protective layer with outstanding waterproof, shock resistance, moisture-proof and electrical insulation performance. This potting material can pass double 85 reliability test (85℃ /85%RH). It is widely used for encapsulation and protection of circuit boards, controllers, sensors, igniters and other electronic parts.
Note: This product contains halogen. Not suitable for projects requiring halogen-free materials.
Low viscosity, good fluidity, easy to fill tiny and complex gaps
Great adhesion to many different substrate materials
Pass double 85 aging test (85℃/85%RH), stable for long term electronic service
Cured layer: waterproof, shock absorbing, moisture resistant, high insulation
1:1 simple mixing ratio, suitable for automatic potting production line
Good flexibility, reduce internal stress of electronic assemblies
Typical Applications
Electronic control boards, PCB circuit boards
Sensors, igniters, power modules
Automotive electronic components
Power supply, controller, converter encapsulation
Electronic parts requiring waterproof, shockproof and insulation protection
Operation Instructions
Mix Part A and Part B strictly at weight ratio 1:1, stir in single direction for 1~3 minutes. Scrape the container bottom and side walls fully to avoid incomplete curing.
Vacuum defoaming after mixing is recommended for precision components. Hot air gun can remove surface bubbles after pouring.
For mass production, vacuum automatic dispensing machine is preferred.
Full curing takes 5~7 days at room temperature. Higher temperature can shorten curing time.
Parameter | 8822A | 8822B | Mixed A+B |
Appearance | Pale yellow transparent liquid | Black liquid | Mixed black |
Viscosity(25℃,mPa·s) | 350±100 | 800±300 | 700±300 |
Density(g/cm³,25℃) | 1.20±0.05 | 1.06±0.05 | 1.09±0.05 |
Pot life(100g,25℃) | - | - | 30±5 min |
Tack-free time | - | - | 1~2 h |
Tack-free curing time | - | - | 4~5 h |
Full cure | - | - | 5~7 days |
Item | Value |
Cured Color | Black |
Hardness | Shore A 50±5 |
Continuous Operating Temp | -40℃ ~100℃ |
Water Absorption | ≤0.5% |
Dielectric Strength | >18 kV/mm |
Volume Resistivity | ≥1×10¹³ Ω·cm |
Standard Package: 20kg/drum (A drum + B drum), custom packaging available
Classification: Non-hazardous chemical
Storage: 18~30℃, dry, ventilated warehouse, avoid direct sunlight
Shelf life: 6 months for unopened drums
After opening: Use up quickly, seal tightly and test before reuse
Advanced Production Lines:
Formulation Precision: Automated 1:1 weight-ratio mixing systems for consistent chemical properties.
Environmental Control: Climate-controlled manufacturing zones (25±3°C, humidity ≤85%) to prevent moisture contamination in PU materials.
Potting Efficiency: High-flow dispensing with low mixed viscosity (250–350 mPa·s) for void-free component encapsulation.
Quality Control:
12-Point Inspection System: Rigorous testing from raw material analysis to final cured hardness verification (Shore 55–65A).
Thermal & Fire Safety: Specialized UL94 V0 flame retardancy checks and thermal conductivity monitoring (0.4 W/m·k).
