Epoxy boards are used in many materials. Epoxy boards a […]
Epoxy boards are used in many materials. Epoxy boards are one of our insulating boards. In many industrial applications, we can see epoxy boards. The production and processing of epoxy boards are relatively complicated. The editor of Weibang Composites will take you to understand the introduction of epoxy board and the role of epoxy board.
What material is epoxy board?
The epoxy board is actually similar to the material of our insulating board. It is made of glass fiber through resin bonding and then heated and pressurized. The epoxy board here uses epoxy resin to make the ring Oxygen board not only has the electrical stability of insulating board, but also makes epoxy board also have very high mechanical properties.
Epoxy board application
Epoxy board can generally be used as heat insulation board. An epoxy board with the same size as the bottom plate is added to the front and rear splints of the mold, which can insulate heat and save energy. The biggest function of epoxy board is to make insulating components in electronic products, such as transformers, DC motors, switch cabinets, etc. Electronic products can only be used when they are energized, so most of the internal components are conductive, but if these conductive parts are mixed together, they cannot be distinguished well, and the resistance is too large and easy to short-circuit, so suitable insulating components must be added. The epoxy board not only plays the role of insulation, but also supports the various components in the electronic product so that their arrangement will not be too chaotic. Epoxy board is water-resistant and corrosion-resistant, and can work in humid environments. Electronic products are most afraid of water. It does not matter if you have epoxy.
Epoxy board can be used as reinforcement board and mobile phone cover. The reinforcement board mainly solves the flexibility of the flexible circuit board. As for the mobile phone casing, a milky white lightweight epoxy board is used. It has a beautiful appearance, flat, high temperature resistance, corrosion resistance, good insulation performance, high strength and good toughness. , Which can protect the phone from external forces. Well-known brands of Samsung, Apple, mobile phones or tablets are equipped with such protective jackets.
Epoxy board characteristics
1. Strong adhesion. The inherent polar hydroxyl groups and ether bonds in the molecular chain of epoxy resins make it highly adhesive to various substances. The shrinkage of epoxy resin is low when curing, and the internal stress generated is small, which also helps to improve the adhesion strength.
2. Mechanical properties. The cured epoxy resin system has excellent mechanical properties.
3. Convenient curing. Choose a variety of different curing agents, the epoxy resin system can almost be cured in the temperature range of 0 ~ 180 ℃. Low shrinkage. The reaction between the epoxy resin and the curing agent used is carried out by direct addition reaction or ring-opening polymerization reaction of epoxy groups in the resin molecule, and no water or other volatile by-products are emitted. Compared with unsaturated polyester resin and phenolic resin, they show very low shrinkage (less than 2%) during curing.
4. Various forms. Various resins, curing agents, and modifier systems can almost adapt to the requirements of various applications, ranging from very low viscosity to high melting point solids.