Advantages: epoxy resin potting sealant is mostly hard, but a few modified epoxy resins are slightly soft. The material has the advantages of good adhesion and good insulation, and good acid and alkali resistance. Epoxy resin is generally resistant to 100℃. The material can be used as transparent material, with better light transmittance. The price is relatively cheap.
Disadvantages: weak resistance to cold and heat change ability, easy to produce cracks after the impact of cold and heat, resulting in water vapor from the crack infiltration into the electronic components, poor moisture resistance; After curing the colloid hardness is higher and more brittle, higher mechanical stress is easy to pull electronic components; Once the epoxy resin is potted and cured, it cannot be opened due to its high hardness, so the product is a "lifetime" product, and the replacement of components cannot be realized. Transparent epoxy resin materials generally have poor weather resistance and tend to yellowing under light or high temperature conditions.
Application: It is generally used for potting and sealing of LED, transformer, regulator, industrial electronics, relays, controllers, power modules and other non-precision electronic devices.