In meters and other instrumentation equipment, battery-powered circuit boards need to work in complex environments for a long time, and in the face of challenges such as moisture, dust, and vibration, effective potting protection must be carried out. In order to ensure stability, the potting material must not only have excellent protective properties, but also meet the requirements of transparent or translucent appearance, and have a certain adhesion with the metal shell.
Core requirements of circuit board potting
The operating environment of the meter battery flowmeter usually includes:
✔High humidity - water vapor may penetrate the circuit, causing short circuit or corrosion; ✔Vibration shock - mechanical shock may occur during equipment operation, affecting the stability of solder joints and electronic components; ✔Outdoor weather resistance - long-term exposure to ultraviolet light, temperature difference and other environmental factors, the material must have good weather resistance; ✔Electrical insulation protection - prevent circuit board short circuit, improve system safety. |
Therefore, the ideal potting material should have water resistance, appropriate adhesion, transparency and excellent weather resistance.
Meter battery flowmeter circuit board potting
Recommended product:
PUR 1635 A/B transparent light yellow polyurethane potting adhesive
PUR 1635 is a two-component solvent-free polyurethane material at room temperature or heat curing. It is light yellow and transparent after curing. It is used for two-component sealing, filling, flame retardant and other fields. The raw material does not contain heavy metals, green environmental protection, wide process operability, high physical properties of the finished product, and good adhesion to the substrate. It can be cured at room temperature or by heating, and can be deeply cured, with less heat release and low shrinkage during curing. After curing, it has excellent flexibility and good flame retardant effect.
▶ Excellent low temperature characteristics, excellent weather resistance ▶ Excellent flame retardant, meet V-0 ▶ Excellent electrical insulation and stability ▶ Good waterproof, moisture-proof, water absorption is very low ▶ Good adhesion to most metals and plastics |
Typical application
This product is commonly used in electronic capacitors, automotive electronic module pooping; Household appliances such as lampblack stove, microwave oven, rice cooker, washing machine, air conditioning control PCB board glue seal; Moisture-proof and water-proof potting protection for the circuit board and magnetic coil of intelligent toilet, induction toilet, metal induction garbage can. |
