What are the advantages, disadvantages and scope of application of polyurethane adhesive in sealant dispensing instead of processing?

The advantages of sealant dispensing instead of polyurethane glue in processing: polyurethane potting glue has excellent low temperature resistance and slightly soft material. It has good adhesion to common dispensing materials, and the adhesion is between epoxy resin and silicone. It has good waterproof, moisture-proof and insulating properties.

Monitoring camera sealant distribution processing

The disadvantages of polyurethane adhesive used for sealant dispensing instead of processing are: poor high temperature resistance and easy foaming, so vacuum defoaming must be used; After curing, the colloid surface is not smooth, the toughness is poor, the aging resistance, impact resistance and ultraviolet resistance are weak, and the colloid is easy to change color.

Application scope of polyurethane sealant dispensing processing: it is usually used to package low-heat electronic components. Such as transformers, chokes, converters, capacitors, coils, inductors, rheostats, linear motors, fixed rotors, circuit boards, LEDs, pumps and other products, can all use sealant dispensing processing technology.

Distribution and treatment of walkie-talkie sealant