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[Chemical Knowledge]：Properties and Uses of Unsaturated Resins

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The nature and use
of unsaturated resin
unsaturated resin, also known as unsaturated polyester resin (Unsaturated Polyester Resin, referred to as UPR), is a kind of polymer compound, by dibasic acid, diol and unsaturated dibasic acid or acid anhydride and other raw materials by polycondensation reaction. Unsaturated resin has good physical properties, chemical stability and processing performance, so it has a wide range of applications in the field of chemical production raw materials.

1. the nature of unsaturated resin

1. physical properties

unsaturated resin is usually a viscous liquid, with good fluidity. Its molecular structure contains unsaturated double bonds, which makes the unsaturated resin has high reactivity and can be added, polymerized and other reactions.

2. chemical properties

unsaturated resin has good chemical corrosion resistance, can resist most of the acid, alkali, salt and other chemical substances. In addition, the unsaturated resin also has good thermal stability and can be used in a certain high temperature environment.

2. the use of unsaturated resin

1. FRP products

unsaturated resin is one of the main raw materials of FRP products. FRP is a composite of glass fiber and unsaturated resin. It has the advantages of light weight, high strength, corrosion resistance, and good insulation. It is widely used in construction, automobiles, ships, aerospace and other fields.

2. coating

unsaturated resin can be used as the main film-forming material for metal, wood, concrete and other surface protection and decoration. Unsaturated resin coating has good weather resistance, chemical resistance and decoration.

3. Adhesive

unsaturated resin can be used as the main component of the adhesive for metal, non-metallic materials such as bonding. Unsaturated resin adhesive has the advantages of high bonding strength and good chemical resistance.

4. Composite

unsaturated resin can be compounded with other materials to form composite materials with special properties. For example, the unsaturated resin can be compounded with materials such as graphite and ceramics to form a composite material with good high temperature resistance and wear resistance.

In short, unsaturated resin as an important raw material for the production of chemical products, FRP products, coatings, adhesives, composite materials and other fields have a wide range of applications.

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