Appliance control board potting protection solution | beginor recommended PUR 1635 polyurethane pott

Why do home appliance control boards need professional potting?

Home appliance control boards (such as air conditioners, smart toilets, range hood PCB) have long faced:

✅ moisture erosion → short circuit, induction failure;

✅ High temperature oil smoke/steam → accelerated aging of components;

✅ vibration drop risk → solder joint cracking, function failure;

✅ Environmental regulations → RoHS and UL certification is required.

Defects of traditional solutions:

✖ epoxy resin is brittle and easy to crack;

✖ silica gel curing slow (12H+), affect the production efficiency;

✖ solvent glue pollutes the environment and is difficult to reach export standards.

PUR 1635 Core advantage: The "Golden 4-hour rule" of home electric irrigation

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.

Product characteristics

■ Excellent low temperature characteristics, excellent weather resistance

■ Excellent flame retardant, meet V-0

■ Excellent electrical insulation and stability

■ Good water and moisture resistance, very low water absorption

■ Good adhesion to most metals and plastics

Typical application

■ Potting and sealing of electronic capacitors and automotive electronic modules;

■ Household appliances such as lampblack stove, microwave oven, rice cooker, washing machine, air conditioning control PCB board glue seal;

■ Life smart toilet, induction toilet, metal induction garbage can circuit board and magnetic coil sealing protection

Typical application scenario