Different characteristics of unsaturated resins in different application scenarios

What are the characteristics of unsaturated resins? Unsaturated resin is a thermosetting resin that solidifies into an insoluble polymer when exposed to heat or initiators. However, this polymer has low mechanical strength and can meet most usage requirements. So, unsaturated resins have a wide range of applications and play a very important role in almost all industries. When reinforced with fiberglass, unsaturated resin can be a composite material, commonly referred to as "fiberglass" (FRP).

What are the characteristics of unsaturated resins? It depends on where it is used. Below, we will introduce the characteristics of unsaturated resin as a fiberglass substrate:

1. Corrosion resistant unsaturated resin is a material with good corrosion resistance, which can withstand general concentrations of acid, alkali, salt, most organic solvents, seawater, atmosphere, oil, and also has strong resistance to microorganisms. It is widely used in petroleum, chemicals, pesticides, pharmaceuticals, dyes, electroplating, electrolysis, smelting, light industry and other national economic fields, and currently plays a role that cannot be replaced by other materials.

2. The density of unsaturated resins with high strength is usually 1.4-2.2g/cm3, which is 4-5 times lighter than steel, and their strength is not small, surpassing that of steel, hard aluminum, and fir. This is very important for aviation, aerospace, rockets, missiles, ordnance, and transportation products, as it requires both strength enhancement and weight reduction. For example, the Boeing 747 jet airliner uses 2.2 tons of FRP components on the main structure, effectively saving aircraft fuel, improving speed, extending battery life, and increasing payload, which is determined by the characteristics of unsaturated resin.

3. The unique heat dissipation performance of unsaturated resins. The common thermal conductivity is 0.3-0.4Kcal/mhC, which is only 1/100-1/1000 of metal, so it is considered an excellent insulation material. The doors and windows made from it are the fifth generation of new energy-saving building materials. In addition, the linear expansion coefficient of FRP is also small and close to that of ordinary metal materials, so the connection between FRP and metal will not be subjected to thermal expansion and generate stress, which is beneficial for bonding with metal substrates or concrete structures.

4. The processing technology of unsaturated resin is excellent, the process is simple, and it can be formed in one go at room temperature and pressure. It can be heated and pressed, and does not form low molecular by-products during the curing process, resulting in a more uniform product. Due to its excellent processing performance, it has been widely used in the production of non glass fiber reinforced materials such as handicrafts, imitation marble products, and polyester paint in recent years.

5. Excellent electrical performance. Unsaturated resin has excellent insulation performance and can maintain good dielectric performance at high frequencies. It does not reflect radio waves, is immune to electromagnetic effects, and has good microwave permeability. It is an ideal material for manufacturing antenna covers. Using it to make insulation parts in electricity meters, motors, and electrical products can improve the service life and reliability of electrical appliances.

6. The material design is excellent. Unsaturated resin is a composite material based on UPR, with glass fiber as the reinforcing aggregate. The two are processed into the required shape in one go. Therefore, FRP is not only a material, but also a structure. The characteristics of unsaturated resins can fully leverage their advantages.