power adapter potting glue need to pay attention to those problems

Xiamen Eahunt is a national high-tech enterprises, with 20 + years of experience in power supply R & D and production, the existing R & D team of more than 50 people, the monthly production capacity of more than 2 million, is currently one of the major power supply manufacturers in China, the company's production products include: small household appliances chargers, balance car chargers, electric car chargers, mining power supply, USB chargers, etc., the specifications of a variety of certifications are complete. Today, we share with you some of the precautions of the power adapter potting adhesive.

The potting compound mainly has these major purposes and requirements:

1, waterproof, potting gel will be the whole power adapter electrical part of the tight package up, and the outside world is completely isolated; what water, moisture, acid and alkali salts can not be next to the circuit components, you can improve the waterproof moisture corrosion resistance. So you choose the glue to good mobility, mobility is not good how can deep penetration completely sealed it; then the bonding force should also have, otherwise potting after a long time of alternating hot and cold and components separated from the useless, power adapter life performance is also affected.

2, thermal conductivity, power adapter is a power product, is to convert, control, output energy to the outside. Adapter work to heat, such as switching tubes, transformers, electrolytic capacitors, inductors, etc. Which is not a heat device and are afraid of heat devices. How to do, surely it should be issued as soon as possible and as much as possible to conduct out of the heat. So the rubber certainly requires good thermal conductivity, can be said to expect that the higher the coefficient of thermal conductivity of the rubber the better. Power supply in the electrolytic capacitors, the temperature rises every ten degrees life shrinkage of about half, but you can not give it a heat sink; transformers, inductors, high temperature a lot of parameters are changing the whole design on the difficulty of the enhancement, you are not good to give him a heat sink.

3, insulation strength, basically all the glue is not conductive, but note that, such as epoxy AB glue curing reaction is not complete may be a bit locally conductive. There are also in order to economize on the inside mixed with sand, it is not good to say. First of all, your sand is not dehydrated and other processing, but also your sand will not be some other elements interfere with the curing; AB agent ratio is reasonable, mixing is sufficiently uniform, and other conditions are available.

4, environmental requirements, adapters generally have been certified. Depends on whether the product is provided with the certification is the same, environmental protection and environmental protection of the material price difference is still quite a lot.

5, flame retardant requirements, generally look at the UL flame retardant test. General requirements of 94-V0 or more.

Eahunt power supply industry has been adhering to the quality first, reputation first concept, all production of power supply products are subject to strict quality control and safety checks to ensure product quality, Eahunt power supply, military quality, trustworthy.